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Transcript of The last 50 years have seen remarkable increases in the demand for moving people and goods. The...
• The last 50 years have seen remarkable increases in the demand for moving people and goods.
• The surface transportation system has been under pressure to sustain the substantial increase in heavy truck and personal traffic volume levels.
• Considerable annual expenditures worldwide are allocated for developing the transportation infrastructure, including urban roads and highways.
• GRT provides products to build new, upgrade unpaved, and maintain existing roads.
• All intellectual property relating to GRT products is wholly owned by GRT.
GRT - Background
Major Milestones
2008 Forestry Plantations Queensland Roads
2009 BC Iron– Western Australia (WA) Roads
2009 BHP Billiton– Mt Whaleback WA Hardstand
2009 Papua New Guinea (PNG) Roads
2009 Fortescue Mines (WA) Roads
2010 Rio Tinto – Tom Price Mine WA Roads
2010 PNG Highlands – Remote Villages Roads
2010 Canada – Environment Canada Approval Approvals
2011 PNG – National Road Program Potholes
2011 PNG – National Road Program Roads
2011 Entered Markets of Indonesia, India, East Timor
2011 Expanded Laboratory Testings Facilities
2011 Expanded Design & Project Management Capability
Major Milestones
2012 Wandoan – British Gas Stabilisation
2012 BHP Mitsubishi Alliance – Dust suppression Haul roads
2012 BMA Stabilisation
2012 Pearls India – Maharashtra local government roads
2012 Bundaberg
2012 Mt Isa Council Dust Suppression
2012 Gladstone Harbour - AGJV Stabilisation Trials
2012 BHP Olympic Dam mine Road Repairs
2012 Remploy Mt Isa Dust Suppression
2012 South Walker creek mine Pothole Repairs
2012 Peabody Mining – Wilkie Creek Stabilisation & Suppression
2012 Paradise Dam Project Stabilisation & Suppression
An innovative formula for instant infrastructure
GRT – Dust Suppression
Untreated Road Surface
Treated Road Surface Treated Road Surface
Untreated Road Surface
GRT 8000 GRT 8000
Dust Suppression Installation• GRT8000 has an initial three stage application process over three days that creates a surface layer which is
semi-impervious to water and also provides the dust attenuation outcome. • Longevity of the application is in directly proportion to traffic, loading, and insitu material conditions.
Further applications of GRT8000 are typically budgeted to be applied periodically as required to meet wearing rates according to operational and environmental conditions.
• The below project has demanding conditions of more than 200 semi trailer water trucks per day on a road formation of White Gravel & Black Cotton Soil (clay) blend road through flat terrain of poor drainage with propensity of flooding.
• Initial Treatment of three applications at 2x150mL /m2 and 1x200mL /m2 totaling 500mL /m2.• The estimated maintenance requirement per annum being five (5) additional coats at 100mL /m2 each
application after the initial treatment. Note: Each situation is different and roads may require less or more maintenance as required.
• Therefore a total budget of 0.5L of GRT8000 per m2 to maintain the section per year; giving rise to a total budget of 1.0L of GRT8000 /m2 for the first year.
Note: The road surface prior to application of GRT8000 is best to be in a condition of reasonable cut, trim, and compacted surface with water before application.
GRT Road Construction
Description: Governor Powers Parkop GRT Wildlife Road section trial section, Port Moresby PNGConstruction Phases1. Trim existing road to profile.2. Add imported material as required for formation.3. Run stabiliser through area4. Spray GRT9000 per dosage over width of treatment
area to OMC.5. Run stabiliser through area twice6. Trim surface with grader adding surface moisture as
required.7. Compact with static drum roller.8. Final trim and multi tyre roller9. 2-coat chip seal GRT800010. Final compact multi tyred roller.
GRT – Cost Summary (QLD, AU)Conventional ConstructionSub-Base: Import, Supply, Place, Compact $18/m2Base: Import, Supply, Place, Compact …………………………………………..$14/m21 Coat Asphalt Seal…………….$xx/m2Total Rate…………………………..$32/m2Project……………………………….$1.12m
GRT ConstructionSub-base: Insitu material blend and compact $ NILBase: Insitu /or import supply, Blend & Compact ………………………………………………..$22/m21 Coat GRT Seal………………………. $xx/m2Total Rate…………………………………$22/m2Project……………………………………..$770k
GRT Products - Stabilisation
GRT7000 (clear)• White liquid• Polymer based on Alkyl Acrylate-
styrene copolymer• Specific Gravity: 1.02g/cm3• Recommended for use in applications
where:– Visual environmental impact is a
high significance– visual appearance to be natural
soils finish
GRT9000 (black)• Black liquid• Polymer-Bitumen based on
Copolymer base ingredients• Specific Gravity: 1.02g/cm3• Recommended for use in applications
where:– General Road building and
integration is significant– Visual appearance to be natural
or black finish
Products – Dust Suppression/Seal
GRT8000c (clear)• White liquid• Polymer based on Styrene -
Carboxylated hybrid polymer• Specific Gravity: 1.02g/cm3• Recommended for use in applications
where:– Visual environmental impact is a
high significance– visual appearance to be natural
soils finish
GRT8000 (black)• Black liquid• Polymer-Bitumen based on Styrene -
Carboxylated hybrid polymer• Specific Gravity: 1.02g/cm3• Recommended for use in applications
where:– General Road building and
integration is significant– Visual appearance to be standard
black road finish
GRT Products – Toxicology Study
GRT completed Toxicology Testing for GRT7000 and GRT9000: – An acute toxicity test with stock solution of GRT7000 and GRT9000 at ratios of (1:1000),
(5:1000) and (10:1000) was done with P.reticulata – In order to determine the in situ field impacts of GRT7000 and GRT9000 acute toxicity
screening tests, with P.reticulata were done on soil leachate of 1 soil sample compacted, cured and treated with GRT9000 as well as a control which was not treated.
The results can be summarised for the acute toxicity test on stock solution as follows: – Acute toxicity tests indicated that without adjusting PH the stock solution of GRT7000 and
GRT9000 at 0.1%, 0.5% and 1% was not harmful to the P.reticulata in 2ltrs of water after 72hr period.
From the above mentioned results the following conclusions can be made:– Results of the soil leachate tests. Using P.reticulata ,indicated that GRT7000 and GRT9000 is not
toxic for a typical material stabilised with these product when broken down and placed in 2ltrs of water .
• 100% SURVIVAL RATE OF P.RETICULATA IN GRT TREATEMENTS• FULL REPORT AVAILABLE IN TECHNICAL MANUAL UPON REQUEST• BACTERIAL REPORT (E-COLI; TFC;SPC;SALMONELLA) IN TECH-MANUAL
Design Approaches
• GRT conforms to designs to standards including: AustRoads, AASHTO, and others.• Typically, structural design approaches to flexible pavement are empirical in nature.• However limitations of the empirical approach are becoming increasingly obvious with developments in the
transportation system and increased knowledge in the fields of pavement mechanics and material science. • Premature failures of asphalt overlays within few years of construction are not uncommon, and the need for a
more comprehensive mechanistic pavement design model has been recognized. Despite efforts by researchers in the last decades to enhance the mechanistic part of the design, no fully satisfactory, comprehensive alternative to the empirical approach has been found.
• Research conducted by the Directorate for Transportation of the European Commission, in the late 1990s, to evaluate existing advanced analytical pavement design models, showed that the output varied considerably from model to model
• Now there is a major effort to develop a new AASHTO Design Guide, with a potential to address the specific effects of the environment and traffic on the materials that relates its structural response to a realistic pavement performance.
• GRT is working with leading Pavement Design Engineers to provide a GRT Mechanistic Design Tool to optimise GRT treated Roads.
GRT Testing – CBR Performance
GRT retains up to 80% of Dry strength in a Soaked Test
Project 1 Project 2 Project 3 Project 40
20
40
60
80
100
120
140
160
Untreated - Soaked
Treated - Soaked
*FIELD DCP TESTS WERE CONDUCTED WITH 2HRS SOAKAGE AFTER FLOODS IN AREA
Project SoilUntreated
Soaked (4days)Treated
Soaked (4days)Papua New Guinea - Nupuru to Okapa Road
Unprocessed Grey Mudstone from Kefanga 53 94 (GRT7000)
Papua New Guinea - Nupuru to Okapa Road
Mix Kamaliki sub-base (Base B) + capping from Kefanga - grey mudstone 45 140 (GRT7000)
Papua New Guinea - Nupuru to Okapa Road 40mm crushed Kamaliki sub base 65 149 (GRT7000)
Australia – Dalby, Shultz’s Road Pilot
Black Soil & White Gravel insitu blend 27 95* (GRT9000)
RESULTS PROVIDED BY CLIENTS’ REGISTERED LABS TO NATIONAL STANDARDS
GRT Testing – Mpa Soak 4 Days
L/m3 L / m2 Dry MPa Wet MPa % Retain
Series 1 0 L 0.00L 813 0 0%
Series 1a 20 L 1.50L 3,186 1,625 51%
Series 2 21 L 1.61L 3,216 1,640 51%
Series 2a 32 L 2.41L 3,550 2,250 63%
Series 2b 37 L 2.75L 3,950 2,800 71%Series 3 43 L 3.21L 4,255 3,251 76%
Series 3a 47 L 3.50L 4,500 3,700 82%
Series 3b 54 L 4.02L 4,725 4,100 87%
Series 4 64 L 4.82L 4,968 4,527 91%
Dry MPa Wet MPa0
1,000
2,000
3,000
4,000
5,000
6,000 Series 1Series 1aSeries 2Series 2aSeries 2bSeries 3Series 3aSeries 3bSeries 4 Se
ries 1
Serie
s 1a
Serie
s 2
Serie
s 2a
Serie
s 2b
Serie
s 3
Serie
s 3a
Serie
s 3b
Serie
s 4
0
1,000
2,000
3,000
4,000
5,000
6,000
Dry MPaWet MPa
QLD TRANSPORT & MAIN ROADS TEST REPORT: A6154GRT9000 WITH CBR 35 MATERIAL
GRT – Typical Pavement Dosage
TREATED DEPTH0.050m
TREATED DEPTH0.075m
TREATED DEPTH0.100m
TREATED DEPTH0.125m
TREATED DEPTH0.150m
TREATED DEPTH0.175m
TREATED DEPTH0.200m
ARID/LIGHT TRAFFIC 1.5 L/m2 2 L/m2 2.75 L/m2 3.5 L/m2 4.25 L/m2 4.75 L/m2 5.5 L/m2
NEW STANDARD 1.75 L/m2 2.75 L/m2 3.5 L/m2 4.5 L/m2 5.25 L/m2 6.25 L/m2 7 L/m2
HEAVY VEHICLES 2 L/m2 3 L/m2 4 L/m2 5 L/m2 6 L/m2 7 L/m2 8 L/m2
WET/HAUL 2.5 L/m2 4 L/m2 5 L/m2 6.5 L/m2 7.5 L/m2 9 L/m2 10 L/m2
BELOW DESIGN
MINIMUM
ROAD SHOULDER STABILISER
DRY/ARID CLIMATE DESIGN
GENERAL PURPOSE SUB-
TROPIC
HEAVY VEHICLE
TROPICAL
ULTRA HEAVY AND
FLOODING
<50% 50% 50-69% 70% 75% 75<LEGEND: WET STRENGTH PERCENTAGE RETENTION OF DRY STRENGTH
DOSAGE OF LITRES PER SQUARE METRE FOR PAVEMENT DESIGN TO MEET REQUIRED RETENTION OF DRY STRENGTH MPa FOR PAVEMENT DESIGN
Application of GRT Stabiliser GRT9000 in L / m2
1.50L 1.75L 2.00L 2.50L 2.75L 3.00L 3.50L 4.00L 5.00L 6.00L 7.00L
TREATED
PAVEMENT
DEPTH (m)
0.050
0.075
0.100
0.125
0.150
0.175
0.200
Case Study – Regional Highway
Estimate Required Thickness for ESAL 2.5 for Life 20yrs @ R80%• Conventional 533mm
– Sub-base, Base A&B >406mm– Surface course >130mm
• GRT 185mm– Treat Sub-base >120mm– Surface course >65mm– Significant cost savings in Time &
Machinery plus single pass with CBR 25 material treated and rolled
Each Road is different and all projects require individual design by Civil Engineers
Indicative Cross Sections
Case Study Palm Plantation Stage 1
• 4 of 60km Haul Roads required rating of 16t/axle• 10 of 350km Access Roads required rating 3t/axle• Another Soil Stabilisation product had been used on the Main Roads &
Access Roads• The product used was a sulphate product• The intense wet season destabilised the roads• GRT was requested to conduct tests on the soil and seek a solution using
GRT product
Condition of Road at Inspection
After the first wet season roads had significant Deformation
Operators Deemed Road to beNon-Trafficable due to failure
GRT Laboratory Testing - Soak
Sample Untreated Sample Treated with GRT9000
Soak Test at 0 Hours
Untreated already breaking up Treated sample unaffected
Soak Test at 3 Hours
Untreated completely collapsed Treated sample unaffected
Soak Test at 16 Hours
Untreated completely collapsed Treated sample unaffected
Case Study - Roads
Access Roads at Inspection Access Roads after Installation
GRT - Pilot Project Recommendations
Specific• State a defined outcome/result• Be preciseMeasurable• Quantifiable• Define reasonable criteria for successAchievable• Within the capabilities of the products but challenging• Comparable with objectives for other systems• Within available resources (time and/or money)• Appropriate resource should be in placeRelevant• Directly linked to the objectives and priorities• Appropriate to current and future developmentsTime-framed• Set a date for completion• Identified as medium or long-term• Part of a series of phased dates for long-term.
Strategic Actions
Typical outputs that might be expected from this stage include:• Communication plan – Publicity, Reports etc.• Lessons learnt• Input to standards• Maintenance plan• Handover documentation• Business plan review• Risk review.• Further Projects scheduled
GRT Pilot Project – Road Stabilisation
The Pilot Project at Shultz’s Road, Ducklow, QLD. required 200+ Semi-Trailer water trucks, plus many Bdouble trucks daily, and drill rigs to be trafficable in all weather to mitigate down time of drilling operations. (Drill rigs were ultimately trafficked along this road in flood conditions).Road Was Unsealed White Rock 70mm over Cotton Black SoilTreatment to blended 50:50 White Rock & Black Soil with 2.5L GRT9000 per square metre with seal coat of GRT8000.
Construction PhasesStandard Procedure modified to utilise grader mixing in lieu of stabilising machine1. Rip to depth and widen existing road to profile with grader as required.2. Add imported material as required for formation to repair and/or upgrade.3. Run stabiliser through area to be treated in section4. Spray GRT9000 per dosage over width of treatment area to OMC.5. Run stabiliser through area twice6. Trim surface with grader adding surface moisture as required.7. Compact with static drum roller.8. Final trim 9. Spray seal coat GRT800010. Final compact multi tyred roller.
Pilot Project - Completed
• Road Condition before • Road Condition after • Road Condition during heavy rain, normally closed in similar conditions
Pilot Project – Project Procedure
• Initial Application of GRT9000 • Grader turning/mixing GRT9000 into insitu material
GRT recommends use of stabilisation machine for mixing GRT products into materials. Use of a grader should be last resort for mixing product and should always be undertaken under the supervision of GRT Technical Personnel.
Pilot Project – Project Procedure
• Further application of GRT9000 to grader turned Insitu material
• Further application of GRT9000 to grader turned Insitu material
Pilot Project – Project Procedure
• Spreading windrow of GRT9000 blended material with Grader
• Rolling trimmed road with drum roller
GRT recommends use of stabilisation machine for mixing GRT products into materials. Use of a grader should be last resort for mixing product and should always be undertaken under the supervision of GRT Technical Personnel.
Pilot Project – Project Procedure
• Close up of finished road • Freshly finished
Pilot Project - Completed
• Road Condition when cured
• Road Condition after Traffic
• Road Condition during heavy rain normally closed in similar conditions
Control Test: Test site 7 was untreated and used as ControlWhite Rock untreated retained CBR 30%Cotton Black Soil untreated retained average of 13%All testing onsite was with only 2hrs of soakage
Case Study - Roads
Case Study - Roads
Case Study - Roads
Broken Roads Leads toBroken Communities
CONTACT INFO:Level 15 Corporate Centre One, 2 Corporate Court Bundall QLD 4217 AUSTRALIA
Head Office: +61 7 55 919 502Fax: +61 7 55 919 555 Email: [email protected]: www.globalroadtechnology.com