SEMINAR-WORKSHOP ON THE UTILIZATION OF WASTE MATERIALS (2013) · 2016-05-06 · seminar-workshop on...

SEMINAR-WORKSHOP ON THE UTILIZATION OF WASTE MATERIALS (2013)

Organized by:

September 5-6, 2013 ♦ Manila Philippines

SEMINAR-WORKSHOPONTHEUTILIZATIONOFWASTEMATERIALS(2013)

Henry Sy Sr. Hall, De La Salle University

Organizing Committee:

Dr. Melito A. Baccay (Chairman) – Technological University of the Philippines – Manila

Advisers:

Dr. Nobuaki Otsuki – Tokyo Institute of Technology Dr. Hirofumi Hinode – Tokyo Institute of Technology

Dr. Susan M. Gallardo – De la Salle University Prof. Ronaldo S. Gallardo – De la Salle University

Members:

Dr. Takahiro Nishida – Tokyo Institute of Technology Dr. Shiela G. Napalang – University of the Philippines, Diliman

Dr. Marish Madlangbayan – University of the Philippines Los Banos Mr. Mineo Maruyama

Dr. Grace Padayhag Gueta – De la Salle University Dr. George William C. Hong – De la Salle University

Dr. Carl Estrellan – De la Salle University Dr. Jonathan Dungca – De la Salle University

Dr. Nathaniel B. Diola – University of the Philippines, Diliman Dr. Enrico Paringit – University of the Philippines, Diliman Dr. Irish Martinez – University of the Philippines, Diliman

Dr. Antonia Tanchuling – University of the Philippines, Diliman


ATTARS–KuramaeKaiPhilippines

The members of the Association of Tokyo Tech and Research Scholars (ATTARS) –KuramaeKaiPhilippinesbindtogetherintooneorganizationandonecommunityinorderto promote closer camaraderie and cooperation among all the members and tostrengthenresearchandcooperationwiththeacademe,industryandgovernmentsoastostimulatescientificandtechnologicalconsciousness.

RationaleoftheSeminar-WorkshopInviewof thecurrent issuesonwastemanagementand the initiatives thathavebeendone, the organizersweremotivated in organizing this activity to promote discussionsand development of sustainable engineering solutions on the management andutilizationofwaste.

ObjectivesoftheSeminar-WorkshopTheAssociationofTokyoTechandResearchScholars(ATTARS)–KuramaeKaiPhilippinesin cooperation with Tokyo Institute of Technology, De la Salle University andInternational Development Engineering Alumni Association recognize the need toparticipateinaddressingenvironmentalissuesgearedtowardssustainabledevelopment.Theseminar-workshophopestobringtogethertechnologists,engineers,scientists,fieldprojectmanagers, representatives fromNGOs, governments, academiaand industry topromote discussions on the development of sustainable engineering solutions on themanagementandutilizationofwaste.Theseminar-workshopprovidesavenuefortheallthestakeholderstosharetheirwork,exchangeideasandmeetotherswhoareinvolvedinwastemanagementandanopportunitytoformulateprojectswithnewpartners.


SEMINAR-WORKSHOPONTHEUTILIZATION

OFWASTEMATERIALS(2013)

OPENINGCEREMONIESDay1,September5,2013(Thursday)

Venue:HenrySySr.Hall,DLSU

I.Registration(12:00-1:30PM) II.Prayer(1:30PM) Dr.MaryAnnQ.AdajarIII.NationalAnthem IV.WelcomeRemarks Bro.RickyLaguda,FSC–President,DelaSalle

UniversityOpeningRemarks Dr.MelitoA.Baccay,-ATTARSPresident

Professor,CivilEngineeringDepartmentCollegeofEngineeringTechnologicalUniversityofthePhilippines

WelcomeMessage

Dr.HirofumiHinodeDirector,TokyoInstituteofTechnology–PhilippinesDepartmentChairmanandProfessor,InternationalDevelopmentEngineering

V.IntroductionoftheKeynoteSpeaker

Dr.Ma.AntoniaTanchulingProfessorInstituteofCivilEngineeringUniversityofthePhilippinesDiliman,QuezonCity

VI.KeynoteAddress(2:30-3:00PM)

Dr.FortunatoT.DelaPeñaDepartmentofScienceandTechnologyUndersecretaryforScience&TechnologyServices

Break(3:00-3:30PM) VII.PlenarySession PlenarySpeaker(3:30-4:00PM)(Philippines)TitleofPaper:CharacterizationofSolidWastesforGreenUtilization

Dr.SusanM.GallardoProfessorChemicalEngineeringDepartmentCollegeofEngineeringDelaSalleUniversity,ManilaPhilippines

PlenarySpeaker(4:00-4:30PM)(Japan)TitleofPaper:UtilizationofOrganicWasteandBiomassResourceforEnvironment

Dr.KiyohikoNakasakiProfessor&Chair,GraduateSchoolProgramEnvironmentalEngineeringBiochemicalEngineeringInternationalDevelopmentEngineeringTokyoInstituteofTechnologyTokyo,Japan

OpenForum(4:30-5:00PM)


VIII.WelcomeParty(5:30-7:30PM) MastersofCeremonies:Dr.SheilahG.Napalang&Dr.GeorgeWilliamC.Hong

2013SEMINAR-WORKSHOPONTHEUTILIZATIONOFWASTEMATERIALS(2013)

CLOSINGCEREMONY

Day2,September6,2013(Friday)Venue:HenrySySr.Hall,DLSU

TECHNICALSESSIONS

SessionTime TrackA TrackBSession1

8:00-8:20AMPROPERTIESOFFRESHAND

HARDENEDCONCRETEREINFORCEDWITH

HAIRFIBERSFROMSUSSCRUFADOMESTICA

BernardoA.LEJANO¹,JulinelTEMPLONUEVO2,Channel

JamesYOUNG2,andRafaelLouisZOTOMAYOR2

¹AssociateProfessor,DeLaSalleUniversity,Manila

Philippines²Student,DeLaSalle

University,Manila,Philippine

PERMEABILITYCHARACTERISTICSOFROADBASEMATERIALSBLENDED

WITHFLYASHANDBOTTOMASH

DUNGCAJ.,AldayJ.,

BARRETTOM.A.,BAUZONM.K.,TOLENTINOA.

DepartmentofCivil

Engineering–ConstructionTechnologyandManagement,

DeLaSalleUniversity-Manila

Session28:20-8:40AM

OCEANFERTILIZATIONTOUTILIZETHEHARDENEDCOAL

ASHBLOCK

AtsushiSAITO¹,MamoruSAKAMOTO1,andYasutaka

NOMA¹¹HAZAMAANDOCorporation,

Tokyo,Japan

TREATMENTOFSOLIDWASTECONTAMINATEDWITHHEAVYMETALS

KeisukeMATSUKAWA¹

¹ChiyodaCorporation,

Yokohama,Japan

Session38:40-9:00AM

SHEARSTRENGTHANDCONSOLIDATIONPROPERTIES

OFWASTELIMESTONEBLENDEDEMBANKMENT

MATERIALSMarabelleR.DELPRADO1,

INVESTIGATIONONTHECOMPRESSIVESTRENGTHANDBULKDENSITYOF

CONCRETEHOLLOWBLOCKS(CHB)WITHPOLYPROPYLENE(PP)PELLETSASPARTIALREPLACEMENTFORSAND


XenoulaKrizziaR.MANZANO2,LouiseFrancescaB.TUAZON3,MargauxBrigittaB.WONG4,andJonathanR.DUNGCA5

CivilEngineeringDepartment,DeLaSalleUniversityManila,

2401TaftAvenue,1004Manila,Philippines

JonathanDavidD.LASCO

andMarishS.MADLANGBAYAN

CollegeofEngineering

UniversityofthePhilippines,LosBaǹosLaguna

Session49:00-9:20AM

EFFECTIVEUSEOFLAKESLUDGETOPRODUCEZEOLITE

FORHEAVYMETALADSORPTION

YanSHAO¹,ChrisSALIM¹,and

HirofumiHINODE¹

¹TokyoInstituteofTechnology,Tokyo,Japan

COLORIMETRICDETECTIONOFESCHERICHIACOLI

BYUSINGARECOMBINANTBACTERIOPHAGE

HoangA.HOANG,

MichiharuABEandKiyohikoNAKASAKI*

DepartmentofInternationalDevelopmentEngineering,

TokyoInstituteofTechnology,

2-12-1Ookayama,Meguro-ku152-8550,Tokyo,Japan

Session5

9:20-9:40AMINFLUENCEOFCURINGTIME

ONTHEELECTRICALRESISTIVITYOFCONCRETECONTAININGCRYSTALLINE

RICEHUSKASH

JeanMarieM.MACATANONG,MarishS.

MADLANGBAYAN,JosephM.CABURNAY,

RichelleG.ZAFRAandEliseoV.ANAJr.

CollegeofEngineering

UniversityofthePhilippines,LosBaǹosLaguna

INFLUENCEOFVARIOUSREPLACEMENTRATIOSOF

FLYASHTOCONCRETEMIXEDWITH

SEAWATER

1IreneOliviaUBAY–ANONGPHOUTH,2Arjan

DavidALQUINTO,2AnthonyBryanANG,

2GinoAngeloANORE,and2JoeArsenMANGILIMA1Faculty,CivilEngineeringDepartment,DeLaSalle

University,Manila,Philippines

2Student,CivilEngineeringDepartment,DeLaSalle

University,Manila,Philippines


Session69:40-10:00AM

CORROSIONPROPERTIESOFSTEELBAREMBEDDEDINCEMENTMORTARMIXEDWITHSEAWATERDURINGSTRENGTHDEVELOPING

PERIODHidenoriHAMADA¹,Masanori

ANNOURA2,DaisukeYamamoto¹,Yasutaka

SAGAWA¹andAmryDASAR1¹KyushuUniversity,Fukuoka,

Japan²FukuokaPrefecture(FukuokaLocalGovernment),Fukuoka,

Japan

LIFETIMEPREDICTIONOFCONCRETEMIXEDWITH

SEAWATERAGAINSTCHLORIDEATTACK

ANDCARBONATION

TomohiroNAGATA1,NobuakiOTSUKI1,TakahiroNISHIDA1,HirokiOHARA2,MOUSSAGARBA-SAY

Zoulkanel1


²JGCCorporations,Kanagawa,Japan

Break10:00-10:20AM


SHEARSTRENGTHPROPERTIESOFGOLDMINETAILINGSANDWASTESFROMAGGREGATEQUARRYINTHEPHILIPPINESMaryAnnQ.ADAJAR¹andMarkAlbertH.ZARCO2

¹CivilEngineeringDept.,GokongweiCollegeofEngineering,DeLaSalle

University,Manila,Philippines²GeotechnicalEng’gGroup,InstituteofCivilEngineering,UniversityofthePhilippines,

Diliman,QuezonCity,Philippines

EFFECTOFUTILIZINGCRUMBRUBBERTIREANDCOALCOMBUSTIONBY-PRODUCTSONTHE

PROPERTIESOFDENSEGRADEDASPHALTMIX

ManuelM.MUHI1,Melito

A.BACCAY2

1PolytechnicUniversityofthePhilippines,Manila,

Philippines2TechnologicalUniversityofthePhilippines,Manila


ACCELERATIONOFCOMPOSTINGBY

INOCULATIONOFYEASTTHATDEGRADESORGANICACIDS

PRESENTINTHERAWCOMPOSTMATERIAL

ShogoARAYA*,HiroshiMIMOTO,andKiyohiko

APPLICATIONOFSTEELSLAGHYDRATEDMATRIX

WITHANTI-WASHOUTPERFORMANCE

TakumiSAWADA1,Hiroki

KANNO2,YoshihiroTAKANO2,Yosuke


NAKASAKITokyoInstituteofTechnology,

Tokyo,Japan

YAMAGOSHI2,SeijiKOMATSU1,Tetsuya

OGASAWARA1andHideharuNAITO1

¹Penta-OceanConstructionCo.,LTD,Tokyo,Japan

²NipponSteel&SumitomoMetalCorporation,Tokyo,

Japan


NON-LINEARULTRASONICTESTINGOFCONCRETEUSING

SHORTSTEELFIBERSASREINFORCEMENT

JasonMaximinoC.ONGPENG¹

andSohichiHIROSE2¹DeLaSalleUniversity,Manila,

Philippines²TokyoInstituteof

Technology,Tokyo,Japan

INFLUENCEOFSLAGANDFLYASHONTHEHARDENED

PROPERTIESOFCEMENT-LAHARSAND

CONCRETEPAVINGBLOCK

JedelG.AGRONIntegratedResearchand

TrainingCenterTechnologicalUniversityof

thePhilippines


FUNDAMENTALSTUDYONUTILIZATIONOFWASTECOMBUSTIONASHAS

CONCRETEMATERIALMIXEDWITHOPC,BFSAND

ANHYDRITEONUTILIZATIONOFWASTECOMBUSTIONASH

ASCONCRETEMATERIALMIXEDWITHOPC,BFSAND

ANHYDRITE

TakuyaKURAMOCHI¹,NobuakiOTSUKI¹,TakahiroNISHIDA1andTakayuki

FUKUNAGA2


²KagoshimaNationalCollegeofTechnology,Japan

DEVELOPMENTOFCONCRETEUSINGSEA

WATERANDCONCRETEDEBRISFROMEARTHQUAKEDISASTER

KeisaburoKATANO¹,NobufumiTAKEDA1,MakotoHISADA2,andNobuakiOTSUKI3

1ObayashiCorporation,

Tokyo,Japan2TohokuUniversity,Miyagi,

Japan3TokyoInstituteofTechnology,Tokyo,Japan


Session1111:40-12:00Noon

ASTUDYONTHEUSEOFBAMBOOASREINFORCEMENT

FORCONCRETEMIXEDWITHSEAWATER

CherylLyneC.ROXAS1,RonaldoS.GALLARDO1,

NobuakiOTSUKI2,TakahiroNISHIDA2,GabrielAristonS.LATORRE1,ManuelDMM.ORTIGAS1,DexieRaeR.

PEREZ1,JalalodenB.TAGO11DeLaSalleUniversity,Manila,

Philippines2TokyoInstituteof


INFLUENCEOFBINDERONTHEPHYSICALAND

MECHANICALPROPERTIESOFCOCOPEATPARTICLE

BOARD

TeodinisC.Petalcorin-GARCIA

CollegeofEngineeringTechnologicalUniversityofthePhilippines,Manila,

1000,Philippines

Lunch12:00-1:00PM

Session121:00-1:20PM

COMPREHENSIVEUTILIZATIONOFBAGASSEFLY

ASH(BFA)FORADVANCEDMATERIALS

PREPARATIONChandraW.PURNOMO1,ChrisSALIM2andHirofumiHINODE3

¹GadjahMadaUniversity,Yogyakarta,Indonesia

²SuryaUniversity,Banten,Indonesia

3TokyoInstituteofTechnology,Tokyo,Japan

UTILIZATIONOFUNTREATEDANDTREATEDRICEHUSKASADSORBENTSFORLEADREMOVALFROM

WASTEWATERSovatteiCHEA1,FlorindaT.BACANI1,MichaelAngeloB.

PROMENTILLA1HirofumiHINODE2,and

SeinghengHUL3

¹DelaSalleUniversity,Manila,Philippines²TokyoInstituteof

Technology,Tokyo,Japan3InstituteofTechnologyofCambodia,PhnomPenh,Cambodia


INFLUENCEOFVARYINGMIXDESIGNANDFIBERLENGTH

ONTHEPROPERTIESOFWATERHYACINTHPARTICLEBOARD

INFLUENCEOFCURINGPERIODANDCURING

MEDIUMONCONCRETEMIXEDWITHSEAWATER

CherylLyneC.ROXAS1,


MelitoA.BACCAY

CollegeofEngineeringTechnologicalUniversityofthe

Philippines,Manila

JasonMaximinoC.ONGPENG1,Nobuaki

OTSUKI2,TakahiroNISHIDA2,NickoJeaninaM.DEMAFELIX1,JoseLuisA.GALAN1,GannaAthenaL.

GANTUANGCO1,DondonM.VERGARA1

1DeLaSalleUniversity,Manila,Philippines2TokyoInstituteof



ASSESSMENTOFSOLIDWASTEGENERATIONAND

RECYCLABLEMATERIALSPOTENTIALOFCOMMERCIAL

ESTABLISHMENTSINUPDILIMAN

PaoloG.FONOLLERA,

DominiqueCharmaineD.ARANAS,Ma.BridaLeaD.

DIOLAandMariaAntoniaN.

TANCHULING

InstituteofCivilEngineeringCollegeofEngineering

UniversityofthePhilippines,DilimanQuezonCity

ASTUDYONTHEUSEOFEXPANDEDPOLYSTYRENE

ASASUBSTITUTEFORFINEAGGREGATESIN

CONCRETEHOLLOWBLOCKS

NicoLaurenAndrewD.AGUILAR,JoseEnriqueS.OCTAVIANO,TimoteiMartinC.SANTIAGO,

RonaldoS.GALLARDO,andGeorgeWilliamC.HONG

CivilEngineeringDepartment,DeLaSalle

University2401TaftAvenue,Manila

Philippines1004

2:00-4:00P.M

Focus-groupDiscussion

2:00-2:20PM2:20-2:40PM2:40-3:00PM3:00-3:20PM3:20-3:40PM3:40-4:00PM4:00-4:20PM 4:20-4:40PM ClosingRemarks–Dr.NobuakiOtsuki4:40-5:00PM DistributionofCertificates

MastersofCeremoniesDr.SheilahG.Napalang&Dr.GeorgeWilliamHong


SUMMARYOFPAPERABSTRACTS

P1:CHARACTERIZATIONOFINDUSTRIALWASTESFORGREENUTILIZATIONDr.SusanM.GALLARDOP2:UtilizationofOrganicWasteandBiomassResourceforEnvironmentDr.KiyohikoNakasakiA1: PROPERTIES OF FRESH AND HARDENED CONCRETE REINFORCED WITH HAIRFIBERSFROMSUSSCRUFADOMESTICA-BernardoA.LEJANO¹,JulinelTEMPLONUEVO2,ChannelJamesYOUNG2,andRafaelLouisZOTOMAYOR2

A2: OCEAN FERTILIZATION TO UTILIZE THE HARDENED COAL ASH BLOCK - AtsushiSAITO¹,MamoruSAKAMOTO1,andYasutakaNOMA¹A3: SHEAR STRENGTH AND CONSOLIDATION PROPERTIES OF WASTE LIMESTONEBLENDED EMBANKMENTMATERIALS - Marabelle R. DEL PRADO1, Xenoula Krizzia R.MANZANO2,LouiseFrancescaB.TUAZON3,MargauxBrigittaB.WONG4,andJonathanR.DUNGCA5A4: EFFECTIVE USE OF LAKE SLUDGE TO PRODUCE ZEOLITE FOR HEAVY METALADSORPTION-YanSHAO¹,ChrisSALIM¹,andHirofumiHINODE¹A5: INFLUENCE OF CURING TIME ON THE ELECTRICAL RESISTIVITY OF CONCRETECONTAININGCRYSTALLINERICEHUSKASH - JeanMarieM.MACATANONG,MarishS.MADLANGBAYAN,JosephM.CABURNAY,RichelleG.ZAFRAandEliseoV.ANAJr.A6:CORROSIONPROPERTIESOFSTEELBAREMBEDDED INCEMENTMORTARMIXEDWITH SEA WATER DURING STRENGTH DEVELOPING PERIOD - Hidenori HAMADA¹,MasanoriANNOURA2,DaisukeYamamoto¹,YasutakaSAGAWA¹andAmryDASAR1A7: SHEAR STRENGTH PROPERTIES OF GOLD MINE TAILINGS AND WASTES FROMAGGREGATEQUARRYINTHEPHILIPPINES-MaryAnnQ.ADAJAR¹andMarkAlbertH.ZARCO2

A8: ACCELERATION OF COMPOSTING BY INOCULATION OF YEAST THAT DEGRADESORGANICACIDSPRESENTINTHERAWCOMPOSTMATERIAL-ShogoARAYA*,HiroshiMIMOTO,andKiyohikoNAKASAKIA9:NON-LINEARULTRASONICTESTINGOFCONCRETEUSINGSHORTSTEELFIBERSASREINFORCEMENT-JasonMaximinoC.ONGPENG¹andSohichiHIROSE2


A10: FUNDAMENTAL STUDY ON UTILIZATION OF WASTE COMBUSTION ASH ASCONCRETEMATERIALMIXEDWITH OPC, BFS AND ANHYDRITE ON UTILIZATION OFWASTE COMBUSTION ASH AS CONCRETE MATERIAL MIXED WITH OPC, BFS ANDANHYDRITE -TakuyaKURAMOCHI¹,NobuakiOTSUKI¹,TakahiroNISHIDA1andTakayukiFUKUNAGA2

A11:ASTUDYONTHEUSEOFBAMBOOASREINFORCEMENTFORCONCRETEMIXEDWITH SEAWATER - Cheryl Lyne C. ROXAS1, Ronaldo S.GALLARDO1,NobuakiOTSUKI2,TakahiroNISHIDA2,GabrielAristonS.LATORRE1,ManuelDMM.ORTIGAS1,DexieRaeR.PEREZ1,JalalodenB.TAGO1

A12: COMPREHENSIVE UTILIZATION OF BAGASSE FLY ASH (BFA) FOR ADVANCEDMATERIALS PREPARATION - Chandra W. PURNOMO1, Chris SALIM2 and HirofumiHINODE3

A13:INFLUENCEOFVARYINGMIXDESIGNANDFIBERLENGTHONTHEPROPERTIESOFWATERHYACINTHPARTICLEBOARD-MelitoA.BACCAYA14: ASSESSMENT OF SOLID WASTE GENERATION AND RECYCLABLE MATERIALSPOTENTIALOFCOMMERCIALESTABLISHMENTSINUPDILIMAN-PaoloG.FONOLLERA,Dominique Charmaine D. ARANAS, Ma. Brida Lea D. DIOLA and Maria Antonia N.TANCHULINGB1:PERMEABILITYCHARACTERISTICSOFROADBASEMATERIALSBLENDEDWITHFLYASH AND BOTTOM ASH - DUNGCA J., Alday J., BARRETTO M. A., BAUZON M. K.,TOLENTINOA.B2: TREATMENT OF SOLIDWASTE CONTAMINATEDWITH HEAVYMETALS - KeisukeMATSUKAWA¹B3: INVESTIGATION ON THE COMPRESSIVE STRENGTH AND BULK DENSITY OFCONCRETEHOLLOWBLOCKS (CHB)WITH POLYPROPYLENE (PP) PELLETSAS PARTIALREPLACEMENTFORSAND-JonathanDavidD.LASCOandMarishS.MADLANGBAYANB4: COLORIMETRIC DETECTION OF ESCHERICHIA COLI BY USING A RECOMBINANTBACTERIOPHAGE-HoangA.HOANG,MichiharuABEandKiyohikoNAKASAKI*B5:INFLUENCEOFVARIOUSREPLACEMENTRATIOSOFFLYASHTOCONCRETEMIXEDWITH SEAWATER - 1Irene Olivia UBAY – ANONGPHOUTH, 2Arjan David ALQUINTO,2AnthonyBryanANG,2GinoAngeloANORE,and2JoeArsenMANGILIMANB6:LIFETIMEPREDICTIONOFCONCRETEMIXEDWITHSEAWATERAGAINSTCHLORIDEATTACK AND CARBONATION - Tomohiro NAGATA1, Nobuaki OTSUKI1, TakahiroNISHIDA1,HirokiOHARA2,MOUSSAGARBA-SAYZoulkanel1

B7: EFFECT OF UTILIZING CRUMB RUBBER TIRE AND COAL COMBUSTION BY-


PRODUCTSONTHEPROPERTIESOFDENSEGRADEDASPHALTMIX-ManuelM.MUHI1,MelitoA.BACCAY2

B8: APPLICATION OF STEEL SLAG HYDRATED MATRIX WITH ANTI-WASHOUTPERFORMANCE - Takumi SAWADA1, Hiroki KANNO2, Yoshihiro TAKANO2, YosukeYAMAGOSHI2,SeijiKOMATSU1,TetsuyaOGASAWARA1andHideharuNAITO1

B9: INFLUENCEOF SLAGAND FLYASHON THEHARDENEDPROPERTIESOF CEMENT-LAHARSANDCONCRETEPAVINGBLOCK-JedelG.AGRON

B10:DEVELOPMENTOFCONCRETEUSINGSEAWATERANDCONCRETEDEBRISFROMEARTHQUAKE DISASTER - Keisaburo KATANO¹, Nobufumi TAKEDA1,Makoto HISADA2,andNobuakiOTSUKI3

B11: INFLUENCE OF BINDER ON THE PHYSICAL AND MECHANICAL PROPERTIES OFCOCOPEATPARTICLEBOARD-TeodinisC.Petalcorin-GARCIAB12:UTILIZATIONOFUNTREATEDANDTREATEDRICEHUSKASADSORBENTSFORLEADREMOVALFROMWASTEWATER-SovatteiCHEA,FlorindaT.BACANI,MichaelAngeloB.PROMENTILLA,HirofumiHINODE,andSeinghengHUL

B13: INFLUENCE OF CURING PERIOD AND CURING MEDIUM ON CONCRETE MIXEDWITH SEAWATER - Cheryl Lyne C. ROXAS1, Jason Maximino C. ONGPENG1, NobuakiOTSUKI2,TakahiroNISHIDA2,NickoJeaninaM.DEMAFELIX1,JoseLuisA.GALAN1,GannaAthenaL.GANTUANGCO1,DondonM.VERGARA1

B14:ASTUDYONTHEUSEOFEXPANDEDPOLYSTYRENEASASUBSTITUTEFORFINEAGGREGATESINCONCRETEHOLLOWBLOCKS-NicoLaurenAndrewD.AGUILAR,JoseEnrique S. OCTAVIANO, Timotei Martin C. SANTIAGO, Ronaldo S. GALLARDO, andGeorgeWilliamC.HONG


S1:CHARACTERIZATIONOFINDUSTRIALWASTESFORGREENUTILIZATION

Dr.SusanM.GALLARDO

ChemicalEngineeringDepartmentDelaSalleUniversity

ABSTRACT

Waste materials produced by industries as well as from other sources are

valuableresourcesthatmaybeutilizedtogenerateincome.Wastesproducedcanberawmaterialsforanotherprocess.RecyclingofwastesisencouragedbytheRA9003ortheEcologicalSolidWastesManagementAct.

Inorder toutilizewaste in ahealthy and in anenvironmentally soundmanner,thereisaneedtoassessitssuitabilityasaresource.Thismeansthatthewastematerialhas to be characterized. This presentationwill highlight two cases of industrialwastemanagement.

Case1involvesthecharacterizationofsludgeproducedbyarecyclingpapermillinthecountry.Thisprojectaimstoutilizethesludgebyproducingcompostbywindrowcomposting.Thepartnerindustryisthebiggestpaperrecyclingmill.Themainconcerninutilizingpapersludge is theheavymetalscontent. Theseheavymetalscomefromthedyes and pigments in paper. Thus, the Asian Regional Research Program onEnvironmentalTechnology (ARRPET)-De laSalleUniversitydidadetailedassessmentofthe sludge produced by the industry’swastewater treatment plant. The result of theassessment led to the use of the sludge for composting using different nitrogenamendmentsources.

Case2 involvesthecharacterizationofcoalashfromapartnercoal firedpowerplant in the Philippines. The SDCC/AIT-France Network is an off shoot program ofARRPET-DLSU. Themainobjective is to comeupwith sustainable solutions to coal ashmanagement. Themain issue inusingcoalash is theheavymetalspresent in thecoalash.Thus,theDLSUResearchCoordinationOfficeInterdisciplinaryresearchprojectwasimplemented to characterize the physical, chemical and geo-technical properties ofbottom ash and fly ash generated from the power plant that uses a green coaltechnologycalledcirculatingfluidizedbedboiler.Theresultsoftheassessmentledtotheutilization of coal ash in the making of construction materials and embankmentmaterials. Lastly, the use of coal ash as a secondary source of metals is currently asubjectofresearchundertheFilipino—FrenchCooperationProgram.


Keywords:Greenutilization,heavymetals,industrialwaste,sludge,recycling

S2:UtilizationofOrganicWasteandBiomassResourceforEnvironment

Dr.KiyohikoNakasaki

Professor&Chair,GraduateSchoolProgram,EnvironmentalEngineering,BiochemicalEngineering,InternationalDevelopmentEngineering,

TokyoInstituteofTechnologyTokyo,Japan

ABSTRACT


A1:PROPERTIESOFFRESHANDHARDENEDCONCRETEREINFORCEDWITHHAIRFIBERSFROMSUSSCRUFADOMESTICA

BernardoA.LEJANO¹,JulinelTEMPLONUEVO2,ChannelJamesYOUNG2,andRafaelLouisZOTOMAYOR2

¹AssociateProfessor,DeLaSalleUniversity,ManilaPhilippines²Student,DeLaSalleUniversity,Manila,Philippine

ABSTRACT

Althoughconcreteisdurableandhashighcompressivestrength,itremainsweakagainsttensilestress.Asolutiontothisistoprovidetensilereinforcementssuchassteelreinforcingbarsandsynthetic/naturalfibers.Thisstudyspecificallyaimstolookintothepossibility of using hair fibers from sus scrufa domestica (pig) as a cheaper fiberreinforcementalternative.Thestudyintendstofindtheeffectsofpig’shair-fiberstotheproperties of fresh and hardened concrete; specifically its effect on the slump,workability, air content, and finishability of fresh concrete and its effect on thecompressiveandtensilestrengthsofhardenedconcrete.Theexperimentalresearchwasdivided into twophases. For the first phase, themost efficient rangeof fiber content,fiber length, and method of mixing that would increase the tensile and compressivestrengthoffiber-reinforcedconcreteweredetermined.Afterwards,inthesecondphase,using the governing parameters in the first phase, a more precise fiber content thatgenerated thehighest increase incompressiveand tensile strengthsof fiber-reinforcedconcrete was determined. Moreover, statistical analysis through T-test: Two-SampleAssuming Unequal Variances was used to check the significance of the results withrespect to the control specimens. Test results showed that as the fiber-content wasincreased, the slumpdecreasedwhile theair content increased.Also, results indicatedthatdrymixing,unsortedlengthoffiber,and0.80%fibercontentbyvolumeofconcretewere the most favorable parameters that made the better improvement on thehardenedpropertiesofconcrete.Experimentalresultsshowedthat0.80%fiber-contentgenerated thehighestcompressiveand tensile strengthswithapercentage increaseof35.49%and10.46%,respectively,withreferencetothecontrolspecimens.Keywords:Concrete,FiberReinforcement,Pig’sHair


A2:OCEANFERTILIZATIONTOUTILIZETHEHARDENEDCOALASHBLOCK

AtsushiSAITO¹,MamoruSAKAMOTO1,andYasutakaNOMA¹

¹HAZAMAANDOCorporation,Tokyo,Japan

ABSTRACT

The possibility of food shortage by the rapid increase in the population of the

worldispointedout.Japan’sfoodself-sufficiencyrateof40%isverylow.Sincethefoodproductioninlandisapproachingtothelimit,developmentofthetechnologytoproducefoodintheseahasbeenrequired. Inthemeantime,theamountofcoalashgeneratedfrom all coal-fired power plants in Japan is about 11million ton per year. Though thegreatestuserofcoalashhasbeenincementproduction,itsdeliveryamounthasbeenonadecliningtrendduetothesluggisheconomyinrecentyears.Thusthedevelopmentofawideruseofcoalashhaslongbeenacrucialissue.

To simultaneously solve two above-mentioned problems, the demonstrationprojectwhich canutilize the coal ashandproduce foods in the seawas carriedout.Alarge scaleartificial seamountwasbuilton the seabedby thehardenedcoalashblockcalled“Ashcrete”.Asaresult,thenutritivesaltintheseafloorweretransportedtotheseasurfacebyupwellingflow.Anditexertedtheeffectofincreasingthefishcatch.Thepossibilityofthefoodproduction increase intheseatoutilizethecoalashwasprovedforthefirsttimeintheworld.Keywords:Coalash,ashcrete,artificialseamount,oceanfertilization,upwellingflow


A3:SHEARSTRENGTHANDCONSOLIDATIONPROPERTIESOFWASTELIMESTONEBLENDEDEMBANKMENTMATERIALS

MarabelleR.DELPRADO1,XenoulaKrizziaR.MANZANO2,LouiseFrancescaB.TUAZON3,MargauxBrigittaB.WONG4,andJonathanR.DUNGCA5

CivilEngineeringDepartment,DeLaSalleUniversityManila,2401TaftAvenue,1004Manila,Philippines

ABSTRACT

The vast distributionof limestone in the Philippinesmakes limestonequarryingprevalent resulting to the accumulation of waste limestone. This opened the idea ofutilizingthewastesasembankmentmaterialswhichwouldresulttoamoreeconomicalconstruction.Inordertotesttheabilityoflimestonetobeanembankmentmaterial,itsstrengthandconsolidationparametersareevaluated indifferentmixedproportions,at0%, 20%, 40%, 60%and100%,with the conventional embankmentmaterial using twoevaluationprogramssuchastheonedimensionalconsolidationtestandthedirectsheartest.Indexproperties(i.e.specificgravity,Atterberglimits,andmaximumandminimumindex densities) were obtained for all the blends in order to produce empiricalrelationships with the different percentage of limestone. It was found out that soilsampleshavinggreaterlimestonecontentaremorecompressiblethanthosewithlowerwhich can be associated from their high liquid limit. For the direct shear test, thecohesionincreasedwiththeadditionoflimestone,althoughtherewasadecreaseintheinternalangleoffriction.Keywords:WasteLimestone,Embankment,DirectShear,Consolidation


A4:EFFECTIVEUSEOFLAKESLUDGETOPRODUCEZEOLITEFORHEAVYMETALADSORPTION

YanSHAO¹,ChrisSALIM¹,andHirofumiHINODE¹


ABSTRACT

Nowadays,waterpollution isbecomingaseriousenvironmentalproblem.Someofthewatersourcesareriver,lake,andgroundwater.Here,wefocusedonlakebecauseit is a closed water system where pollutants could be accumulated easily. Thisaccumulation of sludge could lead to several problems such as eutrophication ormalodor.Insteadofthecommondisposalmethodofdredgedsludgebylandfilling,herewe proposed the utilization of the lake sludge as precursor for zeolitematerial that isusefulasadsorbenttowardsheavymetals inwater.The lakesludgethat isrich insilicaand alumina was treated in alkali solution prior to zeolite synthesis by hydrothermaltreatmentatincreasedtemperatureforacertaintime.Theeffectsofvariousconditions(alkalisolutionconcentration,alkalisolutionvolumetodrysludgeweight(L/S)ratio,Si/Almolar ratio, and reaction temperature) towards the type of zeolite formed wereinvestigated. The cation exchange capacities (CEC) and the adsorption abilities of thezeolitestowardsheavymetalionswerealsoevaluated.Keywords: Hydrothermal synthesis, lake sludge, zeolite synthesis, alkali, adsorptionability.


A5:INFLUENCEOFCURINGTIMEONTHEELECTRICALRESISTIVITYOFCONCRETECONTAININGCRYSTALLINERICEHUSKASH

JeanMarieM.MACATANONG,MarishS.MADLANGBAYAN,JosephM.CABURNAY,RichelleG.ZAFRAandEliseoV.ANAJr.

CollegeofEngineeringUniversityofthePhilippines,LosBaňosLaguna

ABSTRACT

ThestudyinvestigatedtheinfluenceofthecuringtimeontheelectricalresistivitybehaviorofconcreteproducedwithconstantpercentcrystallineRHAreplacementof15%,w/cof0.55ands/aof0.53,withspecimenssubmergedineither simulated or actual set-up of 3% NaCl solution after curing. Curingperiodsweresetto7,28,and56days.Electricalresistivityisameasureofthepassage of current through amaterial. A highly electrical resistivematerial isless corrosive, thereby more durable. The values obtained from themeasurement of electrical resistivity were done using the DC electricalresistivity test. This was done after submerging all the specimens in NaClsolution after 60 days. The results proved that there was a reduction inCoulomb charges when longer curing periods were applied to all the mixes.Therewasapositivecorrelationbetweentheamountoftimespecimenswerecuredandtheirresistancetoelectricity.Specimenscuredfor7daysshowedtheweakestresistancetoelectricitywhilethoseexposedfor56daysexhibitedthestrongest.Therefore,theeffectofcrystallineRHAasapozzolanisevidentatalongerperiodof curing (e.g. 56days). Thus, incorporationofRHAwith longercuringperiodwillproducemoredurableconcreteasopposedtousingconcretewithTypeIcement.Furthermore,thedifferencebetweenthetwosubmersionenvironment(actualandsimulatedNaClsolutionset-up)causedaninsignificantchangeinthetrendoftheresultsforelectricalresistivitytest.

Keywords: Electrical resistivity; crystalline rice husk ash; curing; concrete;submergedmarineenvironment


A6:CORROSIONPROPERTIESOFSTEELBAREMBEDDEDINCEMENTMORTARMIXED

WITHSEAWATERDURINGSTRENGTHDEVELOPINGPERIOD

HidenoriHAMADA¹,MasanoriANNOURA2,DaisukeYamamoto¹,YasutakaSAGAWA¹andAmryDASAR1

¹KyushuUniversity,Fukuoka,Japan²FukuokaPrefecture(FukuokaLocalGovernment),Fukuoka,Japan

ABSTRACT

Generally,seawater isprohibitedtouseasmixingwater inreinforcedconcreteduetohighconcentrationofchlorideion.However,insomeareawheretheavailabilityoffreshwaterforconcreteislimited,theuseofseawaterasmixingwaterisnecessary.There are a few researches on properties of steel bar in sea water mixed concrete.Objectiveofthestudyistounderstandthepropertiesofsteelbarinconcretemixedwithsea water. Firstly, half-cell-potential of steel bar embedded in mortar is measured toevaluate thepotentialof corrosion.Tapwaterand seawaterareusedboth formixingandcuring.Secondly,anodicpolarizationcurveismeasuredforevaluatingtheconditionofpassivityfilmofsteelbar,usingthepassivitygradeproposedbyOtsuki(1985).Fromexperimentalresults,followingconclusionsarederived.(1)Half-cell-potentialofsteelbar inseawatercuredmortarshowedlowervalueabout300mVthantapwatercuredmortarbothfortapwaterandseawatermixing.(2)Half-cell-potentialofsteelbarinmortarmixedwithseawaterandcuredinseawatershowsincreasing trend under the strength developing stage. (3) Anodic polarization curve ofsteel bar in mortar mixed with sea water is classified into the Grade 5 for tap watercuring and the Grade 4 for sea water curing, at the age of 140 days. It seems thatpassivityfilmofsteelbarinmortarisnotbrokenattheageof140daysevenseawaterisusedasmixingwater.Keywords: Sea Water Mixing, Sea Water Curing, Steel Corrosion, Half Cell Potential,PolarizationCurve


A7:SHEARSTRENGTHPROPERTIESOFGOLDMINETAILINGSANDWASTESFROMAGGREGATEQUARRYINTHEPHILIPPINES

MaryAnnQ.ADAJAR¹andMarkAlbertH.ZARCO2

¹CivilEngineeringDept.,GokongweiCollegeofEngineering,DeLaSalleUniversity,Manila,Philippines²GeotechnicalEng’gGroup,InstituteofCivilEngineering,University

ofthePhilippines,Diliman,QuezonCity,Philippines

ABSTRACT

Geotechnical characterization is an essential step towards determining the

suitabilityofminetailingsasfillorembankmentmaterials.Consideringthelargevolumeof tailingsgeneratedandcurrently instorage facilities, theuseofmine tailings thatdonot contain deleterious components as fill or embankment materials is one possibleoption that can alleviate disposal problems of these mine wastes. This study wasconducted to determine the geotechnical characteristics of wastes from concreteaggregate quarry and tailings from goldmine sites in the Philippines. Standard ASTMproceduresareperformedtoobtain thephysicalcharacteristics. Resultsof these testsindicatethatthetailingsamplesarenon-plasticandconsideredasfine-grainedconsistingoffinesandsandsilts.Microfabricanalysesperformedusingelectronmicroscopyshowamicrostructure that is granular with some flaky particles. Tailings’ shear strengthbehavior was investigated through direct shear tests. Tailings in dry conditionmanifested a strong particle interlock as indicated by high critical state friction anglerangingfrom36.6ºto38.4º.Frictionanglesatfailureofsaturatedtailingswereloweratanaverageof4oascomparedtothoseobtained indrycondition. Modifiedhyperbolicmodelwasformulatedtopredicttheshearstressvs.shearstrainandvolumetricstrainvs. shear strain responses of tailings measured from the direct shear test. In themodified hyperbolicmodel, the hyperbolic relation between the changes in stress andstrains is defined in terms of an initial shearmodulus,Gi and the shear strength at

failure, fτ . The model introduced new hyperbolic parameters, the volumetric strainparametersα andβ, to describe the volumetric strain against shear strain behavior oftailings. Themodifiedhyperbolicmodelprovidesagoodapproximation to the stress-strainandvolumetricstrain-shearstrainresponsesmeasuredduringthetestsoftailingsthatexhibitedaductilefailureandcompressivevolumetricstrain. However,themodeldoes not give a goodprediction of stress-strain response for specimens that exhibitedbrittle failure with dilative volumetric strain. The model cannot capture the strainsoftening phenomena, but it can be used tomodel the behavior leading to the strainsofteningaswellasduringtheductilestage.

Keywords:tailings,stress-strainbehavior,shearstrength,modifiedhyperbolicmodel


A8:ACCELERATIONOFCOMPOSTINGBYINOCULATIONOFYEASTTHATDEGRADESORGANICACIDSPRESENTINTHERAWCOMPOSTMATERIAL

ShogoARAYA*,HiroshiMIMOTO,andKiyohikoNAKASAKI

TokyoInstituteofTechnology,Tokyo,Japan

ABSTRACT

Managing the ever-increasing waste materials produced in our society has

become an essential area of study in recent years. Among waste materials, organicfractions such as food waste originating from households, restaurants, and foodprocessing factories can be reclaimed as compost for agricultural use. One of thesignificantcharacteristicsoffoodwastecompostingisthatthepHdecreasesintheearlystages of composting, and it is well known that the low pH inhibits vigorous organicmatterdegradation in the composting. In thepresent study,microbial inoculation intothe raw compostmaterialwas carriedout inorder toprevent thedecrease inpHandthereby accelerate organic matter degradation. A yeast strain RB1 that has a highdegradationactivityagainstorganicacids,wasusedasaninoculumtoaccelerateorganicmatterdegradationduringcomposting.TheRB1strainrapidlydegradedtheorganicacidspresentinrawcompostmaterial,leadingtoariseinpH.Asaresult,bothmesophilicandthermophilicbacteriaproliferatedfasterinthecompostwithRB1inoculationthaninthatwithout inoculation; thus, the lag time for vigorous organic matter degradation wasshortenedby 2 days in theRB1-inoculated compost.Additionally,microorganisms thatweredominant inthethermophilicstagesofcompostingwithoutRB1 inoculationwerealso dominant in the composting with RB1 inoculation. Thus, we conclude that RB1inoculation adjusts the environmental conditions to promote proliferation ofmicroorganismsandcontributestothehighcompostingrate.Keywords: Composting, acceleration of organic matter degradation, microorganisms,inoculation


A9:NON-LINEARULTRASONICTESTINGOFCONCRETEUSINGSHORTSTEELFIBERSASREINFORCEMENT

JasonMaximinoC.ONGPENG¹andSohichiHIROSE2

¹DeLaSalleUniversity,Manila,Philippines²TokyoInstituteofTechnology,

Tokyo,Japan

ABSTRACT

Useofwastefrommanufacturingindustryisneededtoprotecttheenvironmentand utilize it to improve mechanical properties. In this paper, short-steel fibers wereadded to concrete to improveductility and compressive strength.Non-destructive testwasdoneinTokyoInstituteofTechnologyintestingthethreeconcretecubespecimensofmatureagewithsizeof150mmx150mmx150mm.Specifically,non-linearultrasonictestwasused toexamine the internal effects in concreteuntil it reached theultimatecompressivestrength.Theuseof200kHz transmitterwith100kHz receiverand100kHztransmitter and 200kHz receiver was obtained. It was observed that the ratio of thenormalized amplitude of fundamental and sub- harmonics from baseline values wassensitive to internal damage. These ratios of 50kHz:100kHz, 100kHz:200kHz and50kHz:200kHz sub-harmonic generations gave consistent behavior on concretecharacteristics like stress-strain diagram and formation of cracks inside the specimen.Further study is recommended to correlate the stress-strain diagram and internalphysicaldefectsinconcrete.Keywords:Fiber-reinforcedconcrete,Non-destructivetest,Non-linearultrasonictest


A10:FUNDAMENTALSTUDYONUTILIZATIONOFWASTECOMBUSTIONASHASCONCRETEMATERIALMIXEDWITHOPC,BFSANDANHYDRITE

ONUTILIZATIONOFWASTECOMBUSTIONASHASCONCRETEMATERIALMIXEDWITHOPC,BFSANDANHYDRITE

TakuyaKURAMOCHI¹,NobuakiOTSUKI¹,TakahiroNISHIDA1andTakayukiFUKUNAGA2

¹TokyoInstituteofTechnology,Tokyo,Japan²KagoshimaNationalCollegeofTechnology,Japan

ABSTRACT

Inthisstudytheutilizationof“wastecombustionash”asconcretematerialwasinvestigatedfromtheviewpointofleachingphenomenaofchromiumhexavalentandthepractical usage. Especially, in order to clarify the influence of binder type on leachingphenomena of chromium hexavalent, ordinary portland cement with severalreplacementratiosofblastfurnaceslagandanhydritewereusedasbinder.Astheresultof this study, the immobilizationabilityof cementmatrixof chromiumhexavalentwasimproved in the case of binder with both of blast furnace slag and anhydrite. It wasconcluded that this effect was derived from the formation of ettringite containingchromium hexavalent as well as monosulphate in OPC-blast furnace slag-anhydritesystem. Also there was a possibility that this material could be used as the factoryconcrete products such as interlocking block, although it is not enough to use asimportantstructuralmaterialfromtheviewpointofcompressivestrength.Keywords:WasteCombustionAsh,bindertype,chromiumhexavalentleaching,practicalusage


A11:ASTUDYONTHEUSEOFBAMBOOASREINFORCEMENTFORCONCRETEMIXEDWITHSEAWATER

CherylLyneC.ROXAS1,RonaldoS.GALLARDO1,NobuakiOTSUKI2,TakahiroNISHIDA2,GabrielAristonS.LATORRE1,ManuelDMM.ORTIGAS1,DexieRaeR.PEREZ1,Jalaloden

B.TAGO1

1DeLaSalleUniversity,Manila,Philippines2TokyoInstituteofTechnology,Tokyo,Japan

ABSTRACT

Alarming issues such as depletion of renewable freshwater and shortage incement,especiallyinthePhilippines,areevidentnowadays.Traditionally,steelisusedasreinforcement to concrete to compensate its low tensile strength.However, there is alimitedsupplyofsteelinsomecountriesbecauseoflimitednaturalresourceandlackofskilledlabor.Consequently,theuseofsuitablematerialsasalternativereinforcementstoconcrete, such as bamboo, are highly recommended due to its availability, low cost,lightweight characteristics, flexibility and toughness. The significance of this study isdirected towards sustainable development wherein alternative construction materialsarebeingtestedfortheireffectivenessinconstruction.

Thisstudyinvestigatestheeffectivenessofbambooasreinforcementinconcrete,replacingconcrete’smixingwatercomponentwithseawaterandsubstituting20%ofitscement constituent with fly ash. The parameters studied in this research are thecompressive strength, tensile strength of bamboo, pull out bond characteristics andflexuralstrength.

Resultsshowthatthecompressivestrengthoftheconcretemixedwithseawatersamples attained a higher compressive strength than concretemixed with freshwatersamplesafter28daysofcuring.Pulloutresultssuggestasignificantdifferencebetweenthe steel embedded pull out specimens and bamboo pull out specimens. Thecorrugationsofthesteelprovedtoaddbondwiththeconcrete.Tensiletestresultsshowthat the strength of steel in tension is significantly greater than the bamboo samples.Results also show that as the number of nodes increased, the tensile strength of thebamboodecreased.Theflexurestrengthofsteelreinforcedbeamsissignificantlygreaterthan bamboo reinforced beams. In addition, as the number of nodes increased, theresistancetoflexurealsoincreased.Keywords:bamboo,flyash,seawater,reinforcement


A12:COMPREHENSIVEUTILIZATIONOFBAGASSEFLYASH(BFA)FORADVANCEDMATERIALSPREPARATION

ChandraW.PURNOMO1,ChrisSALIM2andHirofumiHINODE3

¹GadjahMadaUniversity,Yogyakarta,Indonesia²SuryaUniversity,Banten,Indonesia


ABSTRACT The common objective of preparing material from waste is for lowering thesynthesis cost and at the same time reducing the quantity of the waste. Here, thepotential of Bagasse Fly Ash (BFA) for various material precursors is comprehensivelydiscussed.BFAshouldbeseparatedintosmallandlargeparticlebeforepreparationduetodifferentpropertiesbetweenthefractions.Thelargefractionisrichincarbonthatcanbeusedforpreparingcarbon-basedmaterial(activatedcarbon)andthesmallfractionisrich in silica that suitable for preparing silica-basedmaterials (zeolite andmesoporoussilica).Keywords:Bagasseflyash,advancedmaterial,activatedcarbon,zeolite


A13:INFLUENCEOFVARYINGMIXDESIGNANDFIBERLENGTHONTHEPROPERTIESOFWATERHYACINTHPARTICLEBOARD

MelitoA.BACCAY

CollegeofEngineeringTechnologicalUniversityofthePhilippines,Manila

ABSTRACT

Thisstudy is focusedonthe investigationof the influenceofvaryingmixdesignand fiber length on the properties of water hyacinth particle board. A total of ninemixtures were considered in this study using three resin-fiber ratio (70:30, 75:25 and80:20)andthreevaryingfiberlengths(13mm,26mmand52mm)toproducea30cmby30 cm by 1.2 cm sample boards. The samples were prepared and tested for WaterAbsorption and Thickness Swelling Test,Modulus of Rupture Test, Face ScrewHoldingStrengthTest, InternalBondStrengthTestandEdgeScrewHoldingStrengthTestbasedon the Philippine Agricultural Engineering Standards – 320 (PAES – 320) for Type 100particleboards.Basedonthetestresults,theamountofresinandthesizeoffibersusedin themixhavean influenceon thephysical andmechanicalpropertiesof theparticleboard. Themore resin used in themix the lesser the particle board absorbswater. Inaddition,usinglargeamountofresinmakestheparticleboardbrittle.Ontheotherhand,theuseofsmallandlongfibersinthemixshowedasignificanteffectonthepropertiesoftheboard. Incorporating smaller sizesof fibers causeshigher thickness swellingdue tothe larger exposed contact area that absorbs water. Consequently, the use of shortfibers resulted to a low holding strength in the board as a consequence of the lesscontinuous bond in the fibers, while the use of longer fibers caused difficulty andconsistencyinthemixthataffectstheevendistributionofthebinder.Hence,voidsareformedcausinglowerstrengthintheparticleboard.Generally,theparticleboardshavinga resin-fiber ratio of 70:30 with 26mm fiber length reinforcement exhibited the bestperformance among the nine mixtures satisfying the PAES - 320 for Type 100 high-densityparticleboard.Keywords:Fiber,waterhyacinth,resinandparticleboard


A14:ASSESSMENTOFSOLIDWASTEGENERATIONANDRECYCLABLEMATERIALS

POTENTIALOFCOMMERCIALESTABLISHMENTSINUPDILIMAN

PaoloG.FONOLLERA,DominiqueCharmaineD.ARANAS,Ma.BridaLeaD.DIOLAandMariaAntoniaN.TANCHULING

CollegeofEngineeringUniversityofthePhilippines,DilimanQuezonCity

ABSTRACT

TheUniversityof thePhilippinesDilimanCampusproduces a largeamount anddifferent types of solid wastes because of the different academic buildings, offices,dormitories, residential houses and laboratories located in it. Data on the solid wastemanagement (SWM) and generation of the whole campus are not available at thepresent. In this study, the commercial establishments in the campuswere given focusconsideringthelargeamountandvariedtypesofsolidwastetheyproduced.Thispaperpresents an analysis of the solidwaste generation andwaste composition of differentcommercialestablishmentsofthecampus.Thepotentialoftheirrecyclablecomponentswere also analyzed. The Shopping Center (SC), College of Arts and Sciences AlumniAssociation (CASAA) Food Service, and Kiosks were taken as representative of allcommercialunits in thecampus.Thegeneration ratesandcompositionof solidwasteswere analyzed using a waste analysis and characterization survey (WACS). Results ofWACSshowthatwastegenerationratesofcommercialestablishmentsareveryhigh.Forinstance, the amount of daily solid waste of SC is found to be about 219.27 kg; andCASAAisproducinganaverageof68.39kg/dayofwaste.It isalsorevealedthatalmosthalfofthesolidwastesbeingdisposedarestillpotentiallyrecyclableanddivertible.Foodwaste is the major recyclable/divertible component followed by mixed papers andplastics.Ithasbeenobservedthatthecommercialunitsinthecampusarestilllackinginterms of efficientwastemanagement, especially in segregation, public awareness etc.Hence,itisrecommendedthatconcernedauthoritiesshouldviewthisissueseriouslyandimprovethecurrentSWMpracticesofthecommercialestablishmentsinUPDiliman.Keywords:Wastegeneration,solidwaste,recyclablematerial,segregation


B1:PERMEABILITYCHARACTERISTICSOFROADBASEMATERIALSBLENDED

WITHFLYASHANDBOTTOMASH

DUNGCAJ.,AldayJ.,BARRETTOM.A.,BAUZONM.K.,TOLENTINOA.

DepartmentofCivilEngineering–ConstructionTechnologyandManagement,DeLaSalleUniversity-Manila

ABSTRACT

Permeability, being the ability of water to flow through a soil, should beconsidered when designing roads. Roads are commonly designed as having lowpermeability to increase their strength capacity. However, without suitable level ofpermeability, drainage will be insufficient and thus, causing ponding, pavementdeterioration,androadfailure.

A specific permeability apparatus was designed and fabricated to test thehorizontal permeability. In contemplation of permeability of roads, the horizontaldirectional flow of the water is to be given more attention since the flow runshorizontally or in line and parallel to the planes of compaction. Roads stretch outhorizontally,ratherthanvertically,thusthetendencyofwaterflowinginthehorizontaldirectionistobegivenmorethought.Unfortunatelytheprocessontestingthepermeabilityonly involvesthetestingthroughtheverticaldirectionatpresent;thereisstillnoapparatusavailabletotestthehorizontalflowofwaterofdifferentsoilsamplesforlaboratoryuse.Withthatinmindahorizontalpermeameterwasdesignedandconstructedinordertoobtainandallowpermeabilityinthehorizontaldirectiontobemeasured,analyzed,andcompared.

Series of experiments were conducted to test both the horizontal and verticalpermeability of pure fly ash (F), pure bottom ash (B), pure conventional road basematerials (CRBM), and blends comprising of the said soil components. The resultsshowed varying parameters for every blend considering the void ratio, relativecompaction, and bottom ash content. Furthermore, an ideal blendwas determined tohavea40%to60%bottomashcontent.Correspondingly,SEMtestsprojectedthatvoidsforeachtypeofsoilgreatly influencedtheindexpropertiesofthesoilsamplesandthepermeability characteristics of the blended soil samples. It was also established thathorizontal and vertical permeability had a significant difference wherein the flow ofwateratthehorizontal-directionisgreatercomparedtothevertical-direction.Keywords:Flyash,bottomash,permeability,relativecompaction,roadbasematerials


B2:TREATMENTOFSOLIDWASTECONTAMINATEDWITHHEAVYMETALS

KeisukeMATSUKAWA¹

¹ChiyodaCorporation,Yokohama,Japan

ABSTRACT

Bulk solidwastes containinghazardousheavymetalshavebeen seriousenvironmentalissuestohighlypopulatedcities.Technologyandengineeringpracticetotreatthosebulksolidwasteshavebeenchanginginthese50years;asknowledgeontoxicityofhazardousmaterial increase, as analytical technology develop, as treatment technology becomemoresophisticated,complicated,complete,andasthepublicattitudetoenvironmentalissueschange.Thispaperintroducesthreecasesofengineeringsolutionsappliedtosolidwaste that theauthorexperienced. First, solidificationof riverbedsludgehavingodorproblem with solidifying agent produced from by-product of flue gas desulfurization,workedeffectivelyforproblemrequiringurgentsolution.Second,thermaltreatmentofheavy metal contaminated soil had both advantages and drawbacks. Third, thegroundwater model has become an essential tool for monitoring and remediation ofgroundwater, which is necessary for risk communication with stakeholders associatedwith the solidwasteholding site. Through those cases, it is learned that theengineershouldcarryoutcorrectassessmentofthesiteandwaste,andshouldbeabletopresentoptionsof technical solution focusingonsolidification/adsorptionofhazardousheavymetalsbynaturalsoilorsolidifiedmaterial.Itisalsolearnedthatvariousrisksassociatedwith each option should be properly evaluated because decisionmaking among thoseoptions are influenced by economical and social conditions at the time of itsimplementation.Keywords:solidwaste,solidification,ettringite,gypsum,heavymetal,thermaltreatment,groundwatermodel


B3:INVESTIGATIONONTHECOMPRESSIVESTRENGTHANDBULKDENSITYOFCONCRETEHOLLOWBLOCKS(CHB)WITHPOLYPROPYLENE(PP)PELLETSASPARTIAL

REPLACEMENTFORSAND

JonathanDavidD.LASCOandMarishS.MADLANGBAYAN

CollegeofEngineeringUniversityofthePhilippines,LosBaǹosLaguna

ABSTRACT

Urbanization has made plastics a necessity today. However, plastics are non-biodegradableandtheincreasinggenerationofplasticscreatesaproblemofdisposal.InthePhilippines, thisproblem isexacerbatedbecauseof lackof sanitary landfills. In thisstudy, PP, which is a subset of these plastics, were pelletized and incorporated inconcretehollowblocksaspartial replacement for sand.Tests suchasdeterminationofthe specific gravity of the materials, and sieve analysis and fineness modulus of theaggregateswereperformedbeforemolding. Five batches of specimens, eachwith 0%,10%,20%,30%,40%PPreplacement (byvolume)weremoldedandcured for28days.The compressive strength andbulk density of the specimens from thesebatchesweredetermined and compared. Results showed that compressive strength decreases aspercentreplacement increases,exceptwhen10%sandwasreplacedbyPPpellets,andthe bulk density decreases when percent replacement increases. The results wereanalyzedandexplained,andstatisticalandeconomicanalyseswereemployedtofurtherdiscuss the results. It was concluded that PP pellets, up to 10% replacement, haspotential as partial replacement for sand, provided that economic constraints aresatisfied. Recommendations focused on improving and reinforcing this study, andsuggestingotherresearchessimilartothisstudythatcanbeundertaken.Keywords:Plasticwastedisposalmanagement,greenconcrete,lightweightconstruction,polypropylene


B4:COLORIMETRICDETECTIONOFESCHERICHIACOLIBYUSINGARECOMBINANTBACTERIOPHAGE

HoangA.HOANG,MichiharuABEandKiyohikoNAKASAKI*

DepartmentofInternationalDevelopmentEngineering,TokyoInstituteofTechnology,2-12-1Ookayama,Meguro-ku152-8550,Tokyo,Japan

ABSTRACT

Composting of feedstock feces attracts public concerns. Thermophilictemperature maintained during composting process is expected to be effective toeliminatepathogensintherawmaterials.Inalargescalecomposting,however,therearelargetemperaturedistributionsuchascoreregionwithhighesttemperatureandsurfaceregion with lowest temperature. Therefore, some pathogens may survive at the lowtemperatureregion.Itisimportanttoascertaincompostproductfreefrompathogenstoensure the safety of usage of the compost. Traditionally, possible pathogens can bedetectedbyplatingmethod.Theplatingmethod,however,cannotdistinguishpathogensfrom non-pathogens. Therefore, more specific method for detection of pathogens isrequired. Inthisresearch,anewcolorimetricphage-basedmethodforthedetectionofpathogenic E. coli O157:H7 was investigated. A recombinant phage that expresses aeukaryotic chromogenic enzyme (ce) was constructed through the homologousrecombinationbetweenthewild typephagegenomeandasynthesizedplasmidvectorthatcontainthecegene.Therecombinantphagewasscreenedbyplaquehybridizationtechnique. The detection of the E. coli was based on a colorimetric reaction of theenzymewith substrates. Themethodwas tested its possibility to detect the E. coli inbroth.Bytheenzymeassay,thedetectionwasconductedafterfewminutes.Moreover,color change of the enzyme assay could be visualized and quantified by a commonspectrophotometer.Keywords:Bacteriophage;pathogens;pathogenicE.coli;detection.


B5:INFLUENCEOFVARIOUSREPLACEMENTRATIOSOFFLYASHTOCONCRETEMIXEDWITHSEAWATER

1IreneOliviaUBAY–ANONGPHOUTH,2ArjanDavidALQUINTO,2AnthonyBryanANG,2GinoAngeloANORE,and2JoeArsenMANGILIMAN

1Faculty,CivilEngineeringDepartment,DeLaSalleUniversity,Manila,Philippines2Student,CivilEngineeringDepartment,DeLaSalleUniversity,Manila,Philippines

ABSTRACT

To minimize the problem in the unequal distribution of the country’s watersupply, the use of seawater as an alternative for freshwater in concretewas utilized.However,theproblemisthatthehighconcentrationofchloridepresentintheseawaterpenetratesthereinforcedconcretemakingthesteelreinforcementscorrode.Therefore,theuseof flyashwouldhelpdelaytheeffectsofchloridesonthereinforcementsteel,and help minimize its problem in disposal. The main objective of the study was todeterminetheinfluenceofvariousreplacementratiosofflyashtoconcretemixedwithseawaterinthecompressivestrengthandcorrosionproperties.Concretespecimenswith0%,10%,15%,20%,30%,40%,and50%flyashreplacementratiosandOrdinaryPortlandCement mixed with fresh water and seawater were prepared. These specimens werecured in freshwater and seawater. The compressive strength of the specimens weretested on the every week until the 84th day. For the corrosion test, the corrosionpotential, corrosion current densities, corrosion rates, and the chloride contentswerealsodetermined.Theoptimumflyashcontentforthecompressivestrengthrangesfrom20% to 25%.Meanwhile, 10% to 20% fly ash replacement range in general showed asignificantimprovementinthecorrosionofspecimenscomparedtothosewithnoflyashcontent.However, for the specimensmixedwith seawater but cured in freshwater, a50%flyashreplacementratioisthebestamounttoaddinthemixtoshowasignificantdecreaseinitscorrosionrate.Keywords:Seawater,flyash,concrete,compressivestrength,corrosion


B6:LIFETIMEPREDICTIONOFCONCRETEMIXEDWITHSEAWATERAGAINSTCHLORIDEATTACKANDCARBONATION

TomohiroNAGATA1,NobuakiOTSUKI1,TakahiroNISHIDA1,HirokiOHARA2,MOUSSAGARBA-SAYZoulkanel1

¹TokyoInstituteofTechnology,Tokyo,Japan²JGCCorporations,Kanagawa,Japan

ABSTRACT

World Meteorological Organization (WMO) reported that two-third of worldpopulation was going to suffer from fresh water shortage by 2025. Therefore, it isnecessary to investigate the usage of seawater as mixing or curing water in concreteindustrythesedays.Fromtheabovebackground,theresistanceofmaterialpenetrationand corrosion behavior of steel embedded in concrete mixed with seawater areinvestigated in this study. Also the life time of structure, including the initiation andpropagationperiodsarepredictedbasedonexperimentaldata.Asaresultofthisstudy,thepropagationperiodofsteelreinforcedconcretemixedwithseawater is longerthanthatwithfreshwater,althoughtheoppositeresultisobtainedinthecaseofincubationperiod.Alsothedifferenceoflifetime,definedasthesumofincubationandpropagationperiods, between reinforced concretemixedwith seawater and freshwater is smallerthan the differences of incubation periods only. Especially the life time of reinforcedconcretemixedwith seawater andblast furnace slag cement (replacement ratio: 55%)became40yearsandthisperiodisalmostthesamewithreinforcedconcretemixedwithtapwater.Keywords:Concretemixedwithseawater,materialpenetration,steelcorrosion,blastfurnaceslag


B7:EFFECTOFUTILIZINGCRUMBRUBBERTIREANDCOALCOMBUSTIONBY-PRODUCTSONTHEPROPERTIESOFDENSEGRADEDASPHALTMIX

ManuelM.MUHI1,MelitoA.BACCAY2

1PolytechnicUniversityofthePhilippines,Manila,Philippines2TechnologicalUniversityofthePhilippines,Manila

ABSTRACT

Recyclingwasteproductsandby-productsforconstructionisaneffectivestrategyforwastemanagement.Theutilizationofrubbertireisincreasingduetourbanmobilityandrapidurbanizationinmajorcitiesandsuburbanareas. Thecrumbrubber tireandcoal combustionby-products (bottomash)aspartialreplacement to fineaggregatewasused todevelopadesignmix forasphaltpavementthatisresistanttoheavytransportvehiclessuchastrucksandtrailers. The development of the project is divided into twomajor parts: the first partcoversthedeterminationofthephysicalpropertiesofmaterialsusedforasphaltmixingandmechanicalpropertiesofasphaltmix,andsecondpart is the fieldexposuretestoftheoptimumasphaltmixdesignthatsatisfiedtheASTMStandardofBituminousAsphaltMixture.

The optimum design that satisfied the strength and durability requirementaccording toMarshall Design Criteria for heavy trafficwas subjected to field exposuretest.RamonMagsaysayBoulevard,whichcaterstoheavyvehicles,servedasthesiteforfield testing of the optimum asphalt mix design. The transversal and longitudinalcracking, deformation and rutting were evaluated by means of visual inspection on amonthlybasis. Thestudyshowedthattheincreasingamountofcrumbrubbertireandbottomashaffectsthemarshallpropertyofasphaltmix.Inthe7-monthfieldexposuretestoftheasphaltmixdesign,itshowednooccurrenceofstructuraldeformation,cracks,andrutting. Keywords:Crumbrubber,bottomash,asphaltbinder,recycling,asphaltmix


B8:APPLICATIONOFSTEELSLAGHYDRATEDMATRIXWITHANTI-WASHOUTPERFORMANCE

TakumiSAWADA1,HirokiKANNO2,YoshihiroTAKANO2,YosukeYAMAGOSHI2,SeijiKOMATSU1,TetsuyaOGASAWARA1andHideharuNAITO1

¹Penta-OceanConstructionCo.,LTD,Tokyo,Japan²NipponSteel&SumitomoMetalCorporation,Tokyo,Japan

ABSTRACT

The authors developed a steel slag hydrated matrix with anti-washoutperformance, toextendtheapplicabilityof theexistingsteel slaghydratedmatrix.Thispaper reports the results of laboratory experiments and various constructionmeasurement data. These results show that a steel slag hydrated matrix with anti-washoutperformancehassufficientconstructionperformance,likethatofanti-washoutconcrete.Keywords:Slag,hydratedmatrix,anti-washoutconcrete


B9:INFLUENCEOFSLAGANDFLYASHONTHEHARDENEDPROPERTIESOFCEMENT-LAHARSANDCONCRETEPAVINGBLOCK

JedelG.AGRON

IntegratedResearchandTrainingCenterTechnologicalUniversityofthePhilippines

Manila,Philippines

ABSTRACT

Thispaperpresentstheexperimentalinvestigationofconcretepavingblockmadeof laharsand<9.52mminsizeandcrushedfurnaceslagaggregates<9.52mminsizewith fly ash as cement replacement. The properties investigated were compressivestrengthandabrasionresistanceundernaturalandacceleratedweathering.Theeffectsof fly ashwere also investigated. Twomixture proportionswere investigated Series Aconsisted of mixes having varying content of crushed slag as replacement of laharaggregates, ranging from30, 40, 50 and 60 percent (%) byweight. Series B containedmixeswithavaryingwatercementratiorangingfrom.45,.50,and.55,respectively.TheexperimentswereconductedusingtheappropriateASTMstandards.

The results indicate that for concretepavingblockwith constantwater cementratio incorporating crushed slag aggregates there is a significant increase of thecompressivestrengthofblock.Data indicateadefinitebeneficialeffectofcrushedslagon the hardened properties of concrete block. Further, the surface of concrete blockbecomes rougher as the crushed slag content increases. Incorporating fly ash on theblock as cement replacement is not really beneficial on the strength of the block. Theresults indicate that forconcreteblockwithconstantwatercement ratio incorporatingflyashascementreplacementthereisasignificantdecreaseofthecompressivestrengthofblock.Theabrasionresistanceofblockwasaffectedsimilarly.Keywords:Furnaceslag,laharsand,abrasionresistance,acceleratedweathering


B10:DEVELOPMENTOFCONCRETEUSINGSEAWATERANDCONCRETEDEBRISFROMEARTHQUAKEDISASTER

KeisaburoKATANO¹,NobufumiTAKEDA1,MakotoHISADA2,andNobuakiOTSUKI3

1ObayashiCorporation,Tokyo,Japan2TohokuUniversity,Miyagi,Japan


ABSTRACT

A lot of concrete debris was generated in the Great East Japan Earthquake

Disaster,andmethodsneedtobedevelopedtotheeffectivelyreuseit.Portandharborstructures suffered serious damage from the tsunami, and a lot of concrete will berequired for their reconstruction.Wehavedevelopedmethods forproducing concretestructures using uncrushed concrete debris and sea water. The “pre-packed concretemethod” and the “post-packed concrete method” make it possible to use largeuncrushedconcretedebrisascoarseaggregate.Inaddition,usingseawaterasthemixingwater can improve early strength. This paper describes concrete production methodsusinglargeconcretedebrisandseawater,andthepropertiesoftheconcrete.Keywords: The Great East Japan Earthquake Disaster, concrete debris, seawater, pre-packedconcretemethod,post-packedconcretemethod


B11:INFLUENCEOFBINDERONTHEPHYSICALANDMECHANICALPROPERTIESOFCOCOPEATPARTICLEBOARD

TeodinisC.Petalcorin-GARCIA

CollegeofEngineeringTechnologicalUniversityofthePhilippines,Manila,1000,Philippines

ABSTRACT

Cocopeat is the spongyanddustymaterial remaining fromextractionof fibersfromcoconuthusk.Itiscurrentlyutilizedforhorticulturalpurposessuchasplantgrowingmediaandsoilconditioner.Potentialuseofcocopeatcanbeassorbentmaterial,filterbedmaterialandasconstructionmaterial.Inthisstudy,theviabilityofusingcocopeatasmaterial for particle board is being explored. It is focused on the propertycharacterizationof cocopeatparticleboardusingCement,Urea-formaldehydepowderresin, and Polyester resin as binders. A total of nine (9) mix designs using three (3)binder-cocopeatmaterialratioof4:1,5:1,and6:1wereusedinthisstudy.TheproducedcocopeatparticleboardsweresubjectedtothephysicalandmechanicaltestsbasedonthePhilippineNationalStandards(PNS)procedures.ThephysicalpropertiesinvestigatedwereDensity,Thickness Swelling (TS), andWater Absorption (WA).On the other hand,the mechanical properties analysed were Modulus of Rupture (MOR), Edge Screw-HoldingStrength,FaceScrew-HoldingStrength,Nail-HeadPull-throughandInternalBondStrength (IB).Resultof thephysical tests showed that theproducedcocopeatparticleboardusingurea-formaldehydeasbinderiscategorizedaslow-densityboard.Whiletheproducedcocopeatparticleboardusingcementandpolyesterasbindersarecategorizedashigh-densityboards.Theoutcomeofthethicknessswellingtestrevealedthatallthespecimen satisfied the minimum requirement set by PNS while only the 4:1 Urea-formaldehydeboarddidnotpassedthewaterabsorptiontest.Fromthetest resultsofthemechanicalproperties,the6:1mixtureofPolyester-cocopeathasthehighestvalueofMORwith137.72kg/cm2and theonly specimen thatexceeded the80kg/cm2MORrequirement for Type 100 particle board. While for the Edge Screw-Holding StrengthTest, the Face Screw-Holding Strength Test, and the Internal Bond Strength Test, allsamplespassedtheminimumrequirements.Inconclusion,thespecimenwithpolyester-coco peat ratio of 6:1 exhibited the best performance amongst the nine mix designssatisfyingthePNS230Type100particleboard.Keywords: Coco peat, particle board, cement, Urea-formaldehyde powder resin,Polyesterresin


B12:UTILIZATIONOFUNTREATEDANDTREATEDRICEHUSKASADSORBENTSFORLEADREMOVALFROMWASTEWATER

SovatteiCHEA1,FlorindaT.BACANI1,MichaelAngeloB.PROMENTILLA1HirofumiHINODE2,andSeinghengHUL3

¹DelaSalleUniversity,Manila,Philippines²TokyoInstituteofTechnology,Tokyo,Japan

3InstituteofTechnologyofCambodia,PhnomPenh,Cambodia

ABSTRACT

The removal of lead fromwastewater in a fixed-bed column by untreated ricehusk (URH), tartaricacid treated ricehusk (TAT-RH)andsodiumcarbonate treated ricehusk (SCT-RH) was investigated in this study. Three operating parameters such asadsorbent bed height (3, 6 and 9cm), flow rate (5, 10 and 15mL/min) and initial leadconcentration (10, 100 and 190mg/L)were carried out. Itwas found that increased inadsorbentbedheightanddecreasedinflowrate, increasedthebreakthroughtimeandbed adsorption capacity. The increase of initial lead concentration decreased thebreakthroughtimebutincreasedthebedadsorptioncapacity.Theincreaseofadsorbentheightfrom3to9cm,bedadsorptioncapacityincreasedfrom0.818to1.946mg/g,0.273to 1.727mg/g and 2.946 to 4.091mg/g for URH, TAT-RH and SCT-RH, respectively. Thehigher adsorption capacity and breakthrough time were observed for SCT-RH incomparisonwithURHandTAT-RH.BDSTModelwasfittedwelltotheexperimentaldataat different adsorbent bed height. The Thomas Model fitted well also to someexperimental data. Predictedbreakthrough curvesof ThomasModelwereobserved tobewellpredictedatlowflowrateandlowinitialleadconcentration.Keywords:Ricehusk,lead,adsorption,fixed-bedcolumn


B13:INFLUENCEOFCURINGPERIODANDCURINGMEDIUMONCONCRETEMIXEDWITHSEAWATER

CherylLyneC.ROXAS1,JasonMaximinoC.ONGPENG1,NobuakiOTSUKI2,TakahiroNISHIDA2,NickoJeaninaM.DEMAFELIX1,JoseLuisA.GALAN1,

GannaAthenaL.GANTUANGCO1,DondonM.VERGARA1

1DeLaSalleUniversity,Manila,Philippines2TokyoInstituteofTechnology,Tokyo,Japan

ABSTRACT With the increasing demand for resources and cost of construction materials,manyalternativesarebeingstudiedforsustainableuse.InthePhilippines,coalusedforpowergeneration results to continuousproductionof residues likebottomashand flyash.Ratherthanbeingdisposed,thesematerialscanbeutilizedaspartialsubstitutetoordinaryPortlandcementinproducingconcrete.Theconstructionindustryisalsooneofthemajorconsumersoffreshwaterintheworld.WiththeabundanceofseawaterinthePhilippines,astudyonthefeasibilityofusingseawaterwillhelpreducethefreshwaterconsumptionoftheconstructionindustry,therebyallocatingittootheruses.

Thisstudyinvestigatestheeffectsofcuringperiodandcuringmediumonconcretemixed with fly ash and seawater in terms of compressive strength and corrosionbehavior.Specimenswerecuredinfreshwaterandseawaterandthenexposedtoindoor,outdoorandcoastalareaconditions.Cylindricalspecimenswerepreparedandtestedforcompressive strength while rectangular prism specimens with 10mm-diameter roundsteel bars were monitored every week for corrosion potential and corrosion currentdensity Curingthespecimens ineitherfreshwaterorseawaterresultedtonosignificantdifference in terms of its compressive strength and corrosion current density until its84thday.Intermsofcorrosionpotential,seawatercuredspecimenstendtohavehighervalueonlyonthe2ndweekoftesting.However,itcanbesaidthatthecorrosionpotentialattheearlyweeksoftestingisstillstabilizing.Seawaterasacuringmediumforconcretemixedwithseawatercanproducethesameeffectasfreshwatercuringatthe84thday,intermsofcorrosionandcompressivestrength,giventhatthespecimenswillonlybecuredfor7days.Keywords:curing,flyash,seawater,corrosion,compressivestrength


B14:ASTUDYONTHEUSEOFEXPANDEDPOLYSTYRENEASASUBSTITUTEFORFINEAGGREGATESINCONCRETEHOLLOWBLOCKS

NicoLaurenAndrewD.AGUILAR,JoseEnriqueS.OCTAVIANO,TimoteiMartinC.SANTIAGO,RonaldoS.GALLARDO,andGeorgeWilliamC.HONG

CivilEngineeringDepartment,DeLaSalleUniversity2401TaftAvenue,ManilaPhilippines1004

ABSTRACT

Polystyrene isoneof thosematerials thatpeoplecomeacross in theireverydaylives; it comes in the formofawhitebulkymasswhich is calledStyrofoam. However,disposingpolystyrene isabigproblemsince it ismadeofpetroleum,anon-sustainableand heavily polluting resource, which makes polystyrene a product that cannot beincinerated.Therecentmeansofdisposingpolystyreneisbyrecyclingordumping.Inanycase,recyclingpolystyrenehasaverylittlemarketallovertheglobeandisnotcurrentlyavailableinthePhilippines.Accordingtoapolystyrenefactsheet,25-30%oflandfillsarecomposed of polystyrene productswhich in timemay continue to increase to amuchbiggernumber.

Thisstudywasdedicatedtointroduceanewinnovationindisposingpolystyrenewastesbymakingitasasubstitutematerialtofineaggregatesinconcretehollowblocks.In achieving the purpose of the study, test specimenswith polystyrenewas tested bymeansofdirectloadapplicationorcompressiontest.

Thisstudyprovedanewwayofdisposingpolystyreneandknewitseffectwhensubstituted to concrete hollow blocks regarding its compressive strength and weight,whichdecreasesasthepercentageofpolystyreneincreases.Thespecificsobtainedfromthe study were analyzed and shown through graphs and tables; the results from thelaboratory tests were compared to that of the control specimens, and which amongthese specimens are nearest to the acceptable compressive strength for commercialhollow blocks. The study produced the best possible polystyrene addedmixwith 20%polystyrenesubstitutionwhichhadastrengthcapacityof2.052MPaanddensityof1653kg/m3attaining thenominalacceptable strengthcapacityofnon-loadbearingconcretehollow blocks stated in PNS 16:1984, as well as producing a lightweight hollow blockhavingadensitywhichwaslessthan1680kg/m3,astandardwhichwassetbyASTMC-129.Keywords: Expanded Polystyrene, petroleum, fine aggregates, Concrete Hollow Blocks,substitutematerial

SEMINAR-WORKSHOP ON THE UTILIZATION OF WASTE MATERIALS (2013) · 2016-05-06 · seminar-workshop on...

Documents

Transcript of SEMINAR-WORKSHOP ON THE UTILIZATION OF WASTE MATERIALS (2013) · 2016-05-06 · seminar-workshop on...