10 -Materials Engineer Test Reviewer

and the water and cement ratio is not exceeded. a) 30 minutes c) 45 minutes1. Scales for weighing aggregates and cement shall be accurate withinb) 15 minutes d) 60 minutes% throughout the range of use. Scales shall be inspected and sealed asoften as the Engineer may deem necessary to assure their continued accuracy.a) 1.0 % c) 0.5 %b) 1.5 % d) 2.0 %

7. A sample from a bituminous mix weighs 1000 grams. At extraction, it was found out that the dry aggregate weighed 950grams. What is the % of asphalt by weight of mix?a) 5.2 % c) 5.4 %b) 5.0 % d) 4.8%2. When cement is placed in contact with the aggregate, batches may berejected unless mixed within hours of such contact.a) 1.5 hours c) 0.5 hours b) 2.0 hours d) 2.5 hours

8. The minimum penetration of the preservative with the surface of the timber piles shall be a) 150 mm c) 250 mmb) 200 mm d) 100 mm3. When mixed at the site or in a central mixing plant, the mixing time shallnot be less than nor more than unless mixer performance tes9t. The contractor shall submit in writing a job-mix formula for theprove adequate mixing of concrete in a shorter time period.a) 30 seconds nor more than 90 secondsb) 50 seconds nor more than 90 secondsc) 60 seconds nor more than 120 seconds d) 90 seconds nor more than 120 seconds

mixture supported by laboratory test data along with samples of resources of components and viscosity temperature relationships to the Engineer for testing and approval at least .a) two weeks c) one weekb) three weeks d) four weeks

4. The flow of water shall be uniform and all water should be in the dru1m0.bTyhe concrete samples should be stored in a moist conditionedthe end of the first seconds of the mixing period.a) 45 seconds c) 15 secondsb) 30 seconds d) 20 seconds

temperature within the range of until the time of test. a) 18* C to 24* C c) 14* C to 24* Cb) 15* C to 18* C d) 18* C to 28* C

5. Concrete not place within minutes from the time the ingredients11. This is used in soil stabilized road surface due to its high were charged into the mixing drum shall be used.a) 120 minutes c) 60 minutesb) 150 minutes d) 90 minutes

property, that is, it absorb and retain water.a) Potassium Chloride c) Magnesium Chlorideb) Calcium Chloride d) Sodium Chloride

6. When concrete is delivered in truck mixers, additional water may be12. The mass % wear of soil aggregate used in cement/lime added to the batch and additional mixing performed to increase the slumprpoportions should not be more than .to meet the specified requirement if permitted by the Engineer, provided allthese operation are performed within after the initial mixing operation

a) 40 % c) 45 %b) 50 % d) 55 %

a) 1.151 to 1.174 c) 1.051 to 1.154 b) 1.250 to 1.178 d) 1.058 to 1.184

13. The uniform rate at which the movable head of the CBR machine tra2v0e.l The specific gravity magnesium sulfate solution used inis . a) 0.s0o5uindness test for aggregate should be within the range of ./ min c) 0.08 in /minb) 0.10 in /min d) 0.09 in /min

a) 1.280 to 1.408 c) 1.295 to 1.308b) 1.180 to 1.308 d) 1.195 to 1.318

14. Cast in place concrete shall not be post tensioned until at least 21. Aggregate accounts for 92 95 % of the weight of the bituminous and until the compressive strength has reached the strength specified. mixture asphalt accounts for 5 8 % of the weight of the mix. Thea) 7 days c) 14 daysb) 10 days d) 20 days

15. The penetration test is an indication of the of asphalt.a) Consistency c) Hardness b) Softness d) Flash Point

16.Specification requires one (1) Quality test for every of asphalt a) 20 tonsc) 50 tonsb) 200 tons d) 40 tons

17. The is the most commonly used method in the design and evaluation of bituminous concrete mixes.a) Job mix formula c) Marshall Stabilityb) Design mix d) Extraction

18. Vibration shall operate a frequency of 8,300 to 9,600 impulses per minute under load at a maximum spacing of cm.a) 30 cm c) 60 cmb) 50 cm d) 40 cm

19. The specific gravity of Sodium Sulfate used in soundness test for aggregate should be with in the range of .

exact percentage to be used is determined by the a) Trial mix c) Job mix b) Design mix d) Job order

22. is an indication that the asphalt mix is overheated.a) Blue smoke c) Rising steamb) Stiff appearance d) Mix slumps in truck

23.In checking the temperature of the mix, the thermometer should be inserted into the mix at least .a) 2 inches c) 4 inches b) 6 inches d) 6.0 mm

24. is applied on existing bit, or cement concrete surface with bituminous materials.a) Bituminous Prime Coat c) Bituminous Seal Coatb) Bituminous Tack Coat d) Bituminous Surface Treatment

25. The solution used in the soundness test of aggregate shall be cooled to a temperature of 21 +or 1* C and maintain at that temperature for at least .a) 24 hours c) 48 hours b) 36 hours d) 18 hours

26. Proper compaction of the fill materials is very important, as it will 33. B. efore the cement is to be used, sampling must be done at leasta) Increase the shear strength b) Decrease permeabilityc) Minimize compressibilityd) All of the above

27. In which DPWH item is emulsified asphalt not suitable?a) Item 301 c) Item 304 b) Item302 d) Item 308

before use.a) one week c) two weeks b) 14 days d) 12 days

34. Asphalt cement shall not be used while it is foaming nor shall be heated at at anytime after delivery.a) 107* c) 120*b) 159*

28.Unconfined compressive strength test is usually performed o3n5. Moisture content of aggregate in bit mix shall not exceed of . a) Sandy soils cth)e time it is introduce into the mixing unit.Organic soilsb) Silty soils d) Clayey soils

29.Consolidation test is usually performed on samples a) Disturbed c) Consolidatedb) Undisturbed d) both a & b

a) 1.5 mass % c) 1 mass %b) 2.0 mass %

36. Batching tolerance for Sand and Aggregate is . a) 1 % c) 3 %b) 2 %

30.A concrete core sample having a maximum height of less tha3n7. Between stage of curing, concrete shall not be exposed for more of its diameter before capping or height less than its diameterafter capping shall not be tested.a) 93 % c) 95 %b) 94 % d) 96 %

31. The cohesion and internal friction of soil is tested by a) Tri axial shear test c) Bearing testb) Direct shear test d) All of the above

than how many hours? a) 24 hours c) hour b)3 hours d) 72 hours

38. As a Materials Engineer, what will you do with major honeycombed area that is considered as defective work? a) Plasterb) Payment of the concrete will be made an adjustmentc) Removed and replaced at the expensed of the contractor32. In concrete acceptance, core will be considered adequate if the averagestrength of the cores is equal to what?

39. If the strength of control specimen does not meet thea) 80% of specified strength & if no single core is less than 75% of specified

s lessstrength b) 90% of specified strength & if no single core i requirement and not feasible to obtain cores due to structural

ngththan 80% of specified strength c) 85% of specified stre consideration, as a Materials Engineer what will be your decision?& if no single core is less than 75% of specified strength

a) Removed and replaced

b) Area will not be paidc) Payment will be made at an adjusted price

47. Minimum size of galvanized wire mesh is . a) 2.0 mm c) 2.7 mmb) 2.2 mm d) 3.4 mm40. After concrete has been placed, it is advisable to maintain fully weltedand in position for how many hours?a) 14 hours c) 72 hoursb) 24 hours d) 15 18 hours

48. Minimum density of gabions is .a) 1,000 kg/cu. m c) 1,400 kg/cu. mb) 1,200 kg/cu. m d) 1,500 kg/cu. m

41. Rock shall be excavated to a depth below sub grade within the 4lim9.iSt oundness loss of field gabions is . of the roadbed a)a)1090% after 5 cycles c) 11 % after 5 cyclesmm c) 200 mmb) 150 mm

42. Minimum penetration of all piles shall be .a) 3 meter c) 7 meter b) 6 meter d) 4.5 meter

b) 10 % after 5 cycles d) 12 % after 5 cycles

50. The heating temperature of reflector zed thermoplastic material during application is a) 130 +/- 7* C c) 200 +/- 7* Cb) 150 +/- 7* C d) 211 +/- 7* C

43. Piles shall not be driven within 7 meters of concrete less than 5o1ld. .Submission of sample minimum quantity of material for asphalta) 7 days c) 28 days b) 14 day

44. Paint contains of pigment and vehicle. a) 20 % & 80 % c) 79 % & 21 %b) 21 % & 79 % d) 80 % & 20 %

45. Minimum thickness of bedding materials beneath the pipe is .a) 100 mm c) 200 mmb) 150 mm

46. Tolerance of gabion dimension is . a) +/- 1% c) +/- 3 %b) +/- 2 % d) +/- 4 %

cement is -------.a) 5 kg c) 20 kg b) 10 kg d) 100 kg

52. For how many years does the small Contractor given to procure necessary testing equipment?a) 2 years c) 5 years b) 4 years d) 6 years

53. The depth of the weakened joints must not be less than and a width of .a) 40 mm & 6 mm c) 40 mm & 5 mm b) 50 mm & 5 mm d) 50 mm & 6 mm

54. Used of bituminous cold mix for potholes patching during rainy/wet period is acceptable a) false b) true

55. In soil, all boring shall be carried to a depth of at least below thepsi/sec b) 20 - 50proposed grade line. a)p0s.i5/0sec d) 15 40 psi/sec m c) 1.5 mb) 1.0 m d) 1.8 m

56. The test that determine pile bearing capacity by loading one or mor6e3. I n a soil exploration, if the characteristic of rock is questionable,pile and measuring settlement under load is . a) Vane shear test c) Pile load testb) Plate bearing test

the minimum depth of boring into the bedrock should be . a) 1.5 m c) 2.5 mb) 2.0 m d) 3.0 m

57. The weight of disturbed samples from hard auger or split spoon shal6l 4b.eDetermine soil bearing capacity by loading a steel plate usuallyat least . a) 1 kgc) 10 kg20 kg d) 100 kg

58. Submission of sample for testing for cement is . a) 10 kg c) 15 kgb) 20 kg d) 40 kg

59. The length of Shelby Tube of an undisturbed sample is . a) 10 long c) 20 longb) 18 long

30 diameter.ab) )Vane shear test c) Pile load testb) Plate bearing test d) None of the above

65. How many hours do aggregate stockpile or binned for draining before being batch?a) 1 hour c) 12 hoursb) 6 hours d) 24 hours

66. What is the relative strength of mortar at 7 & 28 days of fine aggregates, when tested for the effect of organic impurities, which is higher than the standard?60. For small project where quantity of steel bars is 10,000 kg or less, wah)ant ot less than 90 % c) not less than 95 %is the basis for acceptance of material?a) No testing c) Mill certificate b) P.E, certificate

b) not less than 80 % d) not less than 98 %

67. What is the rate of loading for concrete beam tested for flexural stress? a) 110 150 psi/sec c)61. determine the best combination of the material that will produ1c2e5 a 175 psi/secpotentially stable & durable mixture.a) Job mix formula c) Design of bituminous mix b) Marshall formula

b) 115 150 psi/sec d) 130 - 175 psi/sec

68. In concrete sampling paste shall be of normal consistency of when the rod settles to a point below the original surface in 30 secs.62. is the rate of loading for concrete cylinder sample subject to a) 10 +/- 1 mm c) 15 +/- 1mm compression test a) 20 - 40 psi/sec c) 15 b4)011 +/- 1 mm d) 20 +/- 1 mm

69. What the temperature of a concrete sample?a) 10 15 * C c) 15 18* Cb) 18 24 * C

70. What is the wash loss of fine aggregates in the no. 200 sieve?a) 1 % c) 3 %b) 2 % d) 4 %

77. Prime coat shall be left undisturbed for at least . a) 6 hours c) 24 hoursb) 12 hours

78. The first phase of rolling the spread bituminous mix is called breakdown rolling which is carried out by pneumatic roller, temperature requirement must be .a) 200 225* F c) 160 180* F71. Retarder can delay the setting time of concrete up to how many houbr)s?190 199* F d)150 185* Fa) 1 hour c) 4 hoursb) 2 hours d) 8 hours

79. How many gradation ranges for hot plant mix bituminouspavement are there in the blue book?72. Super plasticizer can increase the strength of concrete up to how m an) y5 c) 7 percent? a) 4b0) 6 d) 860 % c) 50 70 %b) 50 60 % d) 60 70 %

73. is the moisture in an air dried soil a) Moisture Contentb) Natural Moisture Contentc) Hygroscopic Moisture Content d) Hydrometer Moisture Content

74. is the tolerance of mix in bituminous. a) 10* C c) 15* Cb) 12* C d) 18* C

80. What is the plasticity index of mineral filler?a) not greater than 4 c) not greater than 8 b) not greater than 6 d) zero

81. If no core had been taken at the end of each day of operation and the project has already been completed, a core shall be taken . a)for every 75 l.m,/lane c) for every 100 l.m/laneb) for every 150 l.m/lane d) for every 1,000 l.m/lane

82. is the slump of workable concrete if vibrated. a) 10 20 mm c) 40 50 mm75. Number of measurement taken in a core sample for thicknbe)ss10 40 mm d) 40 75 mmdetermination of the finish asphalt pavementa) 3 c) 5 b) 4 d) 8

76. In the absence of beam mold in site, cylinder mold is allowed by specification. What is the required strength?a) 2,500 psi c) b) 3,000 psi d) 4,000 psi

83. Burnt product which is used by Gypsum and pulverized to form Portland Cement.a) Hydraulic cement c) Fly Ashb) Clinker d) Volcanic Ash

84. When group index = 0, what is the grade of soil?a) weak soil c) good soil b) poor soil

92. is an empirical number used in evaluation for G.I. a) 0 15 c) 0 20b) 5 20 d) 0 25

85. is a process of breaking down of rocks into small pieces of var9io3u. sIt indicates good subbase materials when G.I. is equal to .size that can range from large boulders to very small clay particles.a) Consolidation c) Weathering b) Unconsolidation

a) 0 c) 10 b) 5 d) 20

94. It indicates very poor subbase materials when G.I. is equal to86. is the limit were further loss of water due to evaporation whichwill not result in reduction of volume.a) Plastic limit c) Shrinkage limit b) Liquid limit

87. a classification of soil which 35% or less the particles pass through no. 200 sieve. a) Grain size soil c) Silty clay materials b) Granular materials d) Clayey materials

. a) 0c) 10b) 5 d) 20

95. indicates the composition of soil.a) Atterberg Limit b) Plasticity Index

96. The higher the value of PI of the soil, the weaker will be the soil performance as a .88. a classification of soil which 35% or more of the particles p as)sTrue c) Dependthrough no. 200 sieve a) Course Sand Soil c) Silty-Clay Materiba)lsFalse d) None of the above b) Granular Materials d) Clayey Materials

89. It evaluate the quality of soil as highway subgrade material. a) Atterberg Limit c) Group Indexb) Plasticity Index d) Liquid Limit

97. the Plasticity Index of group of soila) 0 c) 10b) 6 d) 11

98. is the minimum percent of A-6 group classification of soil.90. When soil has plasticity index value of 10, what is the criteria of the a) 0 % c) 35 %material? a)Coarse grain c) Clayey b) Sandy d) Silty

91. When plasticity index is equala) Coarse grain c) Clayey

b) 25 % d) 36 %

99. is the maximum of G.I. of Silty Clay Materials a) 0 c) 20b) 25 d) 35b) Sandy d) Silty

100. When the value of G.I. is negative, what will be the soil performance? a) Poor Subgrade

c) Good subgrade b) Verygood subgrade d) None of the above

101. The weight of Sandy soil for Hydrometer Analysis is . a) 10 grams c) 50 gramsb) 25 grams d) 100 grams

109.If slag is used, the density of coarse aggregate is . a) 30 100 kg/cu. m c) 1,120 kg/cu. mb) 150 kg /cu. m d) 1,400 kg/cu. m

110. Mass percent loose for fine aggregates when tested in Clay lumps is .102. The weight of Clayey or Silty soil for Hydrometer Analysis is .a) 10 grams c) 50 grams b) 25 grams d) 100 grams

a) 0.10 c) 0.80b) 0.25 d) 1.0

103. A 25 grams fine grained soil can be dried in about . a) 1 hour c) 3 hoursb) 2 hours d) 4 hours

104. A 25 grams sandy soil can be dried in about . a) 1 hour c) 3 hoursb) 2 hours d) 4 hours

111. is a type of cement which shall be transferred to an elevated, air tight and weather proof bins storage.a) Portland Cement c) Bulk Cementb) Pozzolan Cemenr d) None of the above

112. Scales for weighing aggregates and cement shall be accurate within .a) 0.1% c) 0.5%b) 0.25% d) 1.9%105. is a type of soil in which most of the soil grains are of the samesize.graded c) Gap gradedb) Well graded d) Non of the above

1a1) 3P.oorlyThe minimum thickness of conventional concrete as the surface course in monolithic pavement is .a) 50 mm c) 100 mm b) 75 mm d) 150 mm106. The soil grained are force apart by the water added, thus the grain isreduced, what is the method used?a) Lubrication c) Swellingb) Welting d) Saturation

114. determines the resistance of the emulsion to break when mixed with mineral aggregate.a) Viscosity Test c) Spot testb) Distillation Test d) Cement Mixing107. Percent passing loose for coarse aggregates when tested for clay lump is . a)1105.1. mass is an instrument used for rapid in sitepercent c) 0.8 mass percentb) 0.25 mass percent d) 1.0 mass percent

measurement of the structural properties of existing road pavement. a) Pundit Ultra Sonic Concrete Testerb) Dynamic Core Penetrometer108. The mass percent passing loose for coarse aggregates when tested cin) Falling Weight Deflectometersoft fragment is . a) 0.10 c) 3.5b) 0.25 d) 1.00

d) Core Test

116. How many days does the emulsified asphalt must be tested after delivery at temperature 40*F(4.5*C).

of water shall be uniform and all water should be in the drum by the end of the _15_ seconds of the mixing perioda) 10 days c) 14 days b) 12 days d) 16 days

117. In bituminous mixture asphalt content is 5 8% and 92 - 95%aggregates, what will be the amount of additives?a) not more than 2% c) more than 2%b) not more than 3% d) more than 4%

124. The time elapsed from the time water is added to the mix until the concrete is deposited at the site shall not exceed _90_ minutes when concrete is hauled in the truck.

125. When concrete is delivered in truck mixers, additional water may be added to the batch and additional mixing performed to increase the slump to meet the specified requirement if permitted by the Engineer, provided all these operation are performed within _45_118. determines the effect of water on the cohesion of the mimxtiunruetes after the initial mixing operation and the water and cementa) Stability Test c) Distillationb) Solubility d) Immersion-Comprssion Test

ratio is not exceeded

126. Concrete not placed within _90_ minutes from the time the119. The distance of the sample by grooving before rotating the brass cupingisredients were charge into the mixing drum should not be use. . a) c) d) 1

127.

bT)he completed pavement shall be accepted on a lot basis. A lot shall be considered as _500_ linear meter double lane

120. The most common method of assessing strength and stiffness 1o2f 8b.oth

Each lot shall be divided into _5_ equal segment and one coresubgrade and pavement is .a) FDT c) SPTb) CBR d)Non of the above

121. How many days do the specimen for CBR soaked?a) 1 day c) 3 days b) 2 days d) 4 days

will be obtained from each segment in accordance with AASHTO T24.

129. Aggregate account for 92 95% of the weight of the bituminous mix while asphalts for 5 8% of the weight of the mix. The exact percentage to be used is determine by the _Trial Mix_.

130. _Blue smoke_ is an indication that the asphalt is over heated

122. When mixed at the site or a in central mixing plant, the mixing1t3im1.e shaTllhe penetrator test is an indication of the _Consistancy_ of the not be less than _50 seconds nor more than _90_ seconds unless mixearsphaltperformance test prove adequate mixing of the concrete in a shorter timeperiod.

132. _Marshall Stability Test_is the most common used method in the design and evaluation of bituminous concrete mixes123. The batches shall be so charged into the drum that a portion of themixing water shall enter in advance of the cement and aggregate. The flow

133. _Extraction Test_ determines the asphalt content in the bitumin1o4u4s. _Cement Mixing Test of Asphalt_ indicate the rate at which themixes.

asphalt emulsion will break when mix with aggregate .

134. Cast in place concrete shall not be post-tensioned until at least1_4150._

The lost in weight of rock used in gabions when tested to sodiumdays and until the compressive strength has reached the strength specisfiueldfate, soundness loss shall not exceeds 9%

135. This is the characteristic generally used for calculation of the v1o4lu6m. e occupied by the aggregate in various mixture containing aggregates

Gabions dimentions are subject to a tolerance limit of _+/- 3%_including Portland Cement concrete, bituminous concrete, and oth1e4r 7. The pour point of concrete joint sealer shall be at least 11*Cmixtures that are proportioned or analyzed on an absolute volume basis(.20*F) lower than the safe heating temperature, which is theAnswere: Bulk Specific Gravity

maximum temperature to which the material may be heated without exceeding the permitted flow.136. _Apparent Specific Gravity_ pertains to the relative density of the soilmaterial making up the constituents particle not including the pore14sp8a. ce

The penetration of concrete joint sealer, Hot Poured Elastic Typewithin the particles that is accessible to water.

shall not exceed_90_

137. Weight of sandy soil needed for Hydrometer test is _100 grams1_49. The CBR is generally selected at _2.54 mm (0.10 in)_ penetration.

138. Weight of silty or clayey soil needed for Hydrometer test is _501g5r0a.ms_ If the ratio at 5.08 mm (0.21 in ) penetration is greater, the should be _Rerun_139. These are widely used to control the characteristics of soil which are tobe incorporated in roadway. Ans. Liquid and Plastic Limits

151. If the check test gives a similar result, the ratio at 5.08 mm penetration shall be adopted or used 140. This is defined as the highest moisture content of which the mass attainsits minimum volume but continues to lose weight /mass. Ans. Shrin1k5a2g.e

The penetration piston of CBR machine should have a uniformLimit

penetration at a rate of 1.30 mm/min

141. _Le Chattelier Flask is an apparatus used in determination o1f 5s3p.ecificDuring soaking maintain the water level in the mold and thegravity of Hydraulic Cement.

142. _Autoclave Machine_ is an equipment used in determination of

soaking tank is approximately 25.40 mm ( 1.0 in ) above the top of the specimensoundness of Portland Cement

154. Soak the specimen for _96 hours ( 4days )

143. Asphalt shall be homogeneous, free from water, and shall not f1o5a5m. wheTnhe diameter of penetration piston is . Ans. 49.63 +/- 0.23heated to _175* C(347* F)_

mm ( 1935 cu m )

156. The temperature of the asphalt cement delivered to the mixer shall beas required to achieve a kinetic viscosity in the range of . Ans. 150 to 300 cu m/s or 150 to 300 centistokes

168. Laboratory which measures, examines, calibrate or otherwise determine the characteristic or performance materials or products. Ans.. Testing Laboratory157. is the viscosity used to grade asphalt cement . Ans.149 F ( 60*C )

169. Standard technical procedure to determine one or more specifiedcharacteristic of material product is called . Ans. Test Method158. The coarse aggregate used in asphalt mix is . Ans. Retained by2.36mm (no 8 sieve)

170. A document which prevents the test results and other informationrelevant to test is called 159. The application temperature of emulsified asphalt range from . Ans.

Ans.. Test Report10-71*C

171.

is a document signed by the Director of BRS issued toTesting laboratory authorizing them to perform the required test in160. When the tar is used for seal coats, it shall be heated to free flowingbbeuhtalf of DPWH. Ans. Certificate of Accreditation not to exceed . Ans. 149*C

161. is used to determine the soil strength parameter. Ans.Unconfined and Tri-Axial Compression Test

172. This test have been developed to measure the loss of cohesion asa result of water action on the compacted bituminous mixture. Ans. Film Stripping & Immersion Compression Test

162. is used to determine the settlement characteristic of s1o7i3l..Consolidation

AnsT.his mean porosity or perviousness of the mixture, a dense grade mix prevent water from entering the base through the surface.Ans.. Permeability163. The weight of disturbed samples from hard auger or split spoon shall beat least

Ans. 1.0 kg

174. This is used in classifying liquid asphalt into grades. It is useful asa measure to control of consistency, particularly when run at the164. The undisturbed samples from Shellby Tube shall be at least . Ans.. 18 long

temperature of intended application Ans Viscosity Test

165. determines the pile bearing capacity by loading one or 1m7o5r.e

This test determines the total bitumen content of a asphalticpiles and measuring settlement under load. Ans. Pile Load Test

materials, which is the actual cementing constituent of the asphalt.Ans.. Solubility Test166. determines the in-site shear strength of soft to medium clay.Ans. Vane Shear Test

176. This is an accelerated test to show the loss of volatiles when thesample is heated at 163*C for five hours and the loss due to167. determine the soil bearing capacity by loading a steel plate usually 30 inches in diameter. Ans. Plate Bearing Test

volatilization is determined. Ans Loss on Heating

177. This test classifies the different asphalt into types and the diffe1re8n6t. typeTshe bottom bearing block shall be at least thick after anyinto grade. Ans.. Consistency Test

resurfacing operations.. Ans. 0.9 ( 22.50 mm )

178. For liquid asphaltic materials, this test is run on the residue aft1er87. The curing temperature of a specimen before testing is .distillation.. Ans.. Quality Test

Ans. 18*C to 24*C

179. This is one of the most important engineering propertie1s8o8f. soil.The apparatus used to determine the flash point of asphalticIt is defined as its ability to resist sliding along internal surfacematerial is called within the mass..

Ans. Cleveland Open CupAns.. Shearing Strength of Soil

189. The asphalt samples for ductility and penetration test should be subjected to water bath at a temperature of 25*C for .180. This is an arbitrary measurement of consistency and is the basis of classification of all solid and semi-solid asphalt.

Ans.. 11/2 hoursAns.. Penetration Test of Asphalt

190. The concrete shall not be left exposed for more than hour between stages of curing or during the curing period.181. This is a process tomeasure the consistency of liquid asphaltic mateArinasls.. hour to determine their fluidity or resistance to flow.Ans.. Viscosity Test

191. The rate of application of bituminous prime coat is . a) 1-2L/sq. m. c) 0.2-1.5L/sq. m.182. was developed in order to differentiate bituminous materiabls) 0.2-0.7L/sq. m. d) 0.5-2L/sq. m. with respect to hardening characteristic.Ans.. Thin Film Oven Test

192. Another name for asphalt joint filler is . a) asphalt cement c) blown asphalt183. Plant-mixed bituminous mixtures should be sampled in accordance wb)ithrock asphalt d) cutback asphalt the Standard Method of Sampling Bituminous Mixture. A sample not lessthan kg is taken and place in sample bag that would insure 1a9g3ai.nst

In asphalting work, there are

phase of rollingcontamination. This is taken every 75 cu m or 130 tons of mix. Ans.. 10 kgs

a) 2 c)1 b) 3 d) 4

184. The bearing blocks of the compression machine should b19e4a. t

The test determines the asphalt content in the bituminousleast greater than the diameter of the specimen. Ans.. 3.0 %

185. The bottom bearing block shall be at least thick when new

mix. a) Grading c)Extractionb)Bulk Specific Gravity d) AbsorptionAns. 1.0 ( 22.50 mm )

195. In a bituminous mix, there are 3 kinds of aggregate. What kind of passes the no. 200 sieve?

a) Coarse c) Mineral Filler b) Fine d) Admixture

196. Liquid asphalt is also called .a) Cutback asphalt c) Blown asphalt b) Emulsion d) Asphalt cement

197. The different test for soil classification are:a) compaction and FDTb) Hydrometer test and moisture content c) Grading, LL and PL test

203. Is it really necessary to cure concrete specimen?a) Yes c) No b) None of the two

204. The kind of test that determines the consistency of concrete is . a) Slump test c) Abrasion testb) Specific Gravity

205. What is the dimension of concrete cylindrical sample?a) 6 dia. And 12 high c) 8 dia. And 14 high b) 4 dia and 8 high198. The apparatus/equipment used in the liquid limit and plastic limit test iscalled . a) sieves and chisel c) morta2r0a6n.d

In the absence of concrete beam mold at the project site, arepestle b) Atterberg Devi ceoncrete cylindrical molds allowed by the specification to be used inand glass plate

199. is a method of laboratory sampling. a) Mixing c) Proportioningb) Using mechanical splitter/quartering

sampler for item 311 PCCP? a) Yes b) may bec) No

207. The minimum percent compaction for embankment is . a) 92% c) 95%200. In laboratory compaction test/moisture density relation test, what isct)h9e7%specification of rammer?a) 5.5 lb. (2.5 kg) with 12 in drop c) 10 lb. (4.5 kg) in weight with2108.in

The minimum percent compaction for base of the road is .drop b) 8 lb. (3.6 kg) in weight with 16 in drop

a) 100% b)110%c) 105%201. What is the specification of mass present passing in sieve 0.075 mm (No.200 ) grading A for aggregate base course. a) 20-14 c) 0 6b) 0 12

209. The CBR value of aggregate base course is not less than . a) 80% b) 90%c) 85%

202. The number of specimen samples in testing concrete hollow blo2c1k0.is

The CBR value of aggregate subbase course is not less than . . a) 6 pcs./20,000 units (3 for absorption test and 3 for strength test )b) 4 pcs./20,000 units

a) 25% b)35%c) 30%c) 8 pcs./20,000 units

211. The minimum compressive strength for class A concrete is . a) 3,000 psi. ( 20.7 MN/sq.

m ) b)2,400 psi. ( 16.7 MN/sq. m. )c) 5,000 psi. ( 37.7 MN/sq. m. )

219. The solvent used in extraction of bitumen is .a) Diesel oil b) Gasoline c) Water

212. What is the significance of determination of the tensile propert2ie2s0o. f

The percent of bitumen content is computed based on .reinforcing steel bars? a) This method is intended to determine thae) mass of raw sample b) mass of dry aggregate yield and tensile strength of the bar as well as its elongation, and is usecd)mtoass of asphaltclassify the bars into grade b)This method is intended to evaluate the ductile properties of the re2i2n1fo. rcingThe method used to determine the grading of aggregatebars c) None of the above

213. A tie bar should be a) deformed bar b) round bar c) flat bar

214. A dowel bar should be .a) deformed bar b) round bar c) flat bar

215. The mortar for masonry shall consist of . a) one part Portland Cement and 2 parts of sandb) one part Portland Cement and 3 parts of sand c) one part Portland Cement and 4 parts of sand

extracted from bituminous mixture is .a) Mechanical analysis of extracted aggregate b) Stability Testc) Viscosity

222. The drying temperature of sample is a) 110 +/- 5*C b) 100 +/- 5*C c)100*C

223. is a solid asphalt which is a basic constituent of all other asphalt called as hot asphalt or penetration grade asphalt.a) Asphalt Cement b) Emulsified Asphaltc) Cutback Asphalt216. The apparatus used to measure the thickness or height of compactedbituminous paving mixture.

224. is a kind of liquid asphalt which is a mixture of asphalta) Ruler b) Vernier Califer c) Steel Tape

cement and kerosene.a) Medium Curing Cutback217. It is used in calculating the unit weight of the mixture and the degrebe)oAfsphalt Cementcompaction of the asphalt pavement.

c) Rapid Curing Cutbacka) Bulk Specific Gravity of compacted bituminous mixtures using saturatedsurface dry specimen.b) Dry unit weight of compacted bituminous mixtures c) Mass of specimen in water

225. is a kind of liquid asphalt which is a mixture of asphalt cement and oil. a) Slow Curing Cutbackb) Emulsified Asphalt c) Blown Asphalt218. The test which covers the quantitative determination of bitumen in hot-mixed paving mixtures and pavement samples for specification ac2ce2p6t.ance, is a kind of liquid asphalt which is a mixture of asphaltservice evaluation, control and research. a) Extraction b) Spot Test Flash Point

cement and gasoline a) rapid Curing Cutback

b) Blown Asphalt c) Joint Filler

227. Asphalt is defined as . a) A petroleum product

234. An apparatus used to determine the specific gravity of asphalt is called . a) Metal Pycnometer b) Glass Pycnometer c) any bottle

235. Consistency test for asphalt is called .b) A dark brown to black cementitious materials whose consistency rangae) Vs iscosity b) Slump test c)from solid to semi-solid and whose main constituent is called bitumen wLhoscshin ting is either found in nature or as a residue in petroleum refining.c) None of the above

236. A process of volatilization test which measures the relativeproportion of asphalt to oil. a) Distillation228. It is a kind of liquid asphalt which is a mixture of asphalt cement andb) Extraction c)Float Test water with emulsified with pungent odor.a) Emulsified Asphalt b) Asphalt Cement c) Rap2id37C.uringIt is a period wherein the asphalt begins to melt.Asphalt

229. Joint filler in concrete pavement is a .

a) Softening Point b)Boiling Point c)Fire Pointa) Blown Asphalt b) Hot asphalt c) Liq2u3i8d. The sampling requirement of asphalt is .asphalt

a) 1 sample for every 200 drums or 40 metric tons b) 1 sample for every 100 drums230. A device used to measure the relative hardness of asphalt is c) 1. sample for every shipment a) Penetrometer b) Spectometer c) VicatApparatus

231. A property of asphalt cement to stretch without breaking is

239. The component of bituminous mixes which range from 92 to 96%is called . a) Bituminous Blended Aggregate b) Concrete Aggregatecalled . a) Ductility bc) SandDurability c)Tensile240. is a property of bituminous mixes in pavement to232. It is a point where the volatile components of asphalt will evaporate.resist deformation or displacement due to impose load or repeateda) Fire Point b) Flash Point c) Centelorading. a) StabilityPoint

b)Flexibility c)Tensile

233. It determines whether asphalt is over heated or not during the 2p4r1oc. ess of is a property of bituminous mixes in pavement to manufacture. a) Spot Test b) Boil Teresstist disintegration or deterioration due to the action of water, trafficc) Extraction Test

and changing climatea) Durability b) Flexibility c)Ductility

242. is a property of bituminous mixes in pavement adjust itselfto settlement a) Flexibility b) RigidityHardness

250. The rate of application of prime coating using cutback asphalt is . a) 1-2 liters/sq. m b)0.5-1 liter/ sq. m c) 2-3 liters/sq. m243. These are the factor affecting the workability of bituminous mixesa) Gradation of aggregate, quality of asphalt, and temperature of m25ix1. The rate of application of tack coating using liquid or emulsifiedb) Surface texture and temperature mixc) Quantity of aggregates and asphalt content

asphalt is .a) 0.2-0.7 li/sq.m b) 0.1-0.5 li/sq. m c) 2 li/sq. m.

244. The dry molded asphalt sample in the immersion compression 2te5s2t. is

The rate of application of seal coat using asphalt cement issubmerged in water for . .a) 0.9-1.8 li/sq. m

a) 4 daysb) 4 hoursc) 2 daysb) 10-11 li/sq. mc) 8-9 li/sq. m

245. The percent index retention is computed in the formula 253.. a) Wet Stability/Dry Stability x 100b) Dry Stability/Wet Stability x 100c) Wet Stability Dry Stability/Dry Stability x 100

The rate of application of seal coat using cutback asphalt is . a) 1.5-3.0li/sq. m b) 2.0-3.0 li/sq. m c) 1-2 li/sq .m

246. The sampling requirement of bituminous mixes is . a) 1 sample for every 75 cu. m.b) 1 sample for every 150 cu. m.c) 1 sample per delivery per day

254. The primary quality control mechanism for the production of asphalt mies with high degree of uniformity that will satisfy job requirement is .a) Job mix formula b) Quality control formula c) Assurance

255. The objective of designing the asphalt mixture is determination of247. The application of liquid asphaltic material on a prepared untreated base

. a) Type and grade of asphalt,is . a) Pprirmopeortion of coarse, fine and mineral filler, if used and asphaltCoatingb) Seal Coating c) Tack Coating

content.b) To produce a desirable characteristic of pavement which are stable, durable, flexible and skid resistance.C) All of the above248. The application of liquid asphaltic material to an existing surface is .a) Tack Coating c) Prime Coating

256. The percent asphalt content in hot laid bituminous mixture rangeb) Seal Coating

249. The application of asphaltic material and aggregate to an existing

from c) 5-10%

a) 5-8% b) 4-6%surface for the purpose of sealing it against the infiltration of wate2r5o7r. The placing temperature for bituminous mixture measured in thesurface moisture is called b) Tack Coating c) Prime Coating

a) Seal Coating

truck prior to dumping is .a) at least 107*C b) at least 120*C c) at least 150*C

258. The second phase of rolling the spread bituminous mixture is c2a6ll6ed. The wearing away of the pavement surface caused by thebreakdown rolling which is the one responsible to attain the maximum density. This rolling is carried out by the use of .

dislodging of aggregate particle is called .a) raveling b) alligator crack c) ruttinga) pneumatic roller b) steel roller c) sheepfoot roller267. Interconnected cracks forming a series of small blocks resembling259. The significance of final rolling is to remove the roller marks to previaonusalligators skin or chicken wire is called .rolling in order to have a good finish pavement with a temperature of 16a0) *aFl.ligator cracking b) reflection cracking c) bleeding a) True b) False c) Maybe268. is the type of cement to be used in the DPWH260. The proper way of rolling should begin at .

infrastructure project as indicated in the Blue Book.a) the sides and proceeds longitudinally towards the roads center, eachas)trPioprtland Cement Type I b) Pozzolan Cement Portland overlapping on half the roller width, gradually progressing the crown of Ctheement Type IIroad b) thecenter and proceeding longitudinally toward the side of the road

269. If the fine aggregates are subjected to five cycles of sodiumc) any part of the road provided each strip overlapping on half the rollersulfate soundness test, the weighted loss shall not exceedwidth a)10 mass percent b) 5 mass percent c) 3 mass261. What is the minimum degree of compaction of asphalt pavement?

percenta) not lee than 97% of the density of the laboratory compacted specimenb) not less than 100% of the density of the laboratory compacted s2p7e0c.imenIf the coarse aggregate are subjected to five cycles of sodium c) not less than 85% of the density of the laboratory compacted specimseunlfate soundness test, the weighted loss shall notexceed .262.What is the color of asphalt when it is overcook?a) 12 mass percentb) 15 mass percent10 mass

a) yellowish brown b) blackc)graypercent

263. determines the thickness and density of compact2e7d1a. sphaTlthe mass percent of wear of coarse aggregates for item 311 pavement. a) Core testwhen tested by AASHTO 96 is not greater than .b) FDT c) X-ray

a) 40% b) 45% c) 50%

264. The cored sample of asphalt pavement is measured at 272. .

The design of concrete mix specified by the blue book is based ona) approximately quarter points b) three pointsc) two points

. a) Absolute Volume Method b) Area Method c) American Method

265. Too much asphalt content in the bituminous mixes causes . a) bleeding b) potholes c) cracks

273. The minimum flexural strength requirement of beam sample when tested by third point loading method is .a) 3.5 Mpa b) 3.8 Mpa c) 4.0 Mpa

b) Sieve No. 200 c) Gillmore283. A mixture of cement and water is called .274. The minimum flexural strength requirement of beam sample when tested by midpoint method is .a) 4.5 Mpa b) 3.5 Mpa c) 5.0 Mpa

a) cement paste b) mortar paste c)concrete paste

275. are additives used in mixing concrete.

284. The apparatus used to determine the initial and final setting of cement in the laboratory is .a) sodium chloride b) admixtures c) curing

276. determines the consistency of concrete.

ag)eGnitllmore needles b) Bailey needle c) Vicat apparatusa) Slump Test b) consolidation test c) vis2c8o5s.ity

The compressive strength of cement mortar sample in seven

277. Equipment used in the consolidation of fresh concrete.a) jack hammer b) vibrator c) drilling

days is not less than . a) 19.3 MN/sq. m b) 20 MN/sq. m c) 24 MN/sq. mmachine

286. What is the appearance of the molded cement paste which fails to meet the autoclave expansion. .278. The prescribed forms to be used in concrete paving is called a) crumble b) shiny c) changes colora) steel forms b) wooden c) combination ofsteel and wood

279. The initial setting time of Portland cement is not less than

287. The dimension of beam sample for paving concrete is . a) 6 x 6 x 21 b) 6 x 6 x 24 c) 4 x 4 x218 . a) 30min. b) 60 min. c) 90 min.

288. The critical number of days of curing concrete is .a) first seven days b) first 10 days c) 28 days280. The final setting time of Portland cement Type I is .a) 10 hrs. b) 24 hrs. c) 36 h2r8s9. . The standard dimension of concrete cylindrical sample is . a) 6 dia. and 12 tall b)281. The standard sand used in testing the mortar strength of Portland

6 dia. and 6 tall c) 6 dia. and 8 tallcement is called . a) Ottawa Sand b) Beach Sandc) River Sand

290. There are two layers in performing sampling of beam samples.How many number of blows are required per layer?282. The apparatus used in determining the fineness of Portland cement ab)y63 blows b) 75 blows c) 50 blows air permeability is .a) Blaine Air Permeability Apparatus

291. There are three layers in performing sampling of concrete cylinder. Honoew ( 1 ) set b) two ( 2 ) sets c)many blows are required per layer?a) 25 blows b) 30 blows c ) 35 blows

three ( 3 ) sets299. In a completed pavement, what is the minimum core samples292. The formula which determines the proportion of the mix which can mreqeutired before payment is effected? (Assuming that the thickness isthe desired strength requirement of concrete is called .

23 cm. ) a) Fivea) design of concrete mixb) Boyles Formulac) Bernoulisholes per km per laneb) One hole per 500mc) P.E.

FormulaCertificate

293. The minimum testing requirement for every project is indicated30in0.a dulyIn a Barangay road, what is the minimum requirement forapproved . a) Quality Control Program b) Program of Workc) Work Schedule

thickness determination of its completed pavement?a) Five holes per km per lane b) P.E. Certificate c) One hole

294. It is prescribed in each project based on estimated quantities a3n0d1. A qulity test is one of the minimum requirement for item 200 specifies the kind and number of test for each item of work. a) Minimum number of workb) Minimum Testing Requirement c) Work Schedule

aggregate subbase course. a) True b) False c)optional

302. There is no CBR test for item 300 aggregate surface course. a) True b) False c) optional295. Embankment materials delivered at the job site was about 12,000 cu. m.The minimum test requirement calls for 1 G, P, C for every 1,5003c0u3..m.

In item 311 and 405, grading is perform .a) 10 G, P, C b) 8 G, P, C c) 6 G, P, C

296. of There is 1 Q cement required for every . a) 4,000 bags or fraction thereofb) 2,000 bags or fraction thereofc) 10,000 bags

297. There is Q of cement required for every . a) 20,000 kg or fraction thereofb) 10,000 kg or fraction thereof c)115,000 kg or fraction thereof

a) for every 75 cu. m. b) for every 300 cu. m. c) none

304. For pipe culverts and storm drains, the minimum test is 1 Pipe for every 50 pipes. What is the alternative requirement?a) 1 set consisting of 3 concrete cylinder samples for not more than25 pipes cast in the field and 1 inspection report for each size for not more than 25 pipes cast in the field.b) inspection report is enough c) Mill Certificate

298. How many set of beam samples taken for every 75 cu. m. of co3n0c5r.ete

The minimum test requirement for paint is .poured per day?

a) 1 sample for every 100 cans or fraction thereof

b) 1 sample for every 50 cans or fraction thereof c) Mill Certificate

312. Peat and muck are .a) fair subgrade spoil c) unstable soilb) stable soil d) good subgrade soil306. The minimum test requirement for water used in concrete for aquestionable source is .

313.

a) The slump test on concrete is a measure P.E. Certificate b) 1 Quality Test c)a) strength c) consistencyInspection Report

307. Based on the maximum dry density obtained by laboratory test3,1t4h.e

b) unit weight d) durability

The fineness modulus is highest of .degree of compaction required for aggregate subbase should be at leasat ) fine sand c) very coarse sand . a) 9b5)%very fine sand d) coarse sand c) 100% b)98% d) none of the above

315. If concrete is continuously moist cured, it will gain strengthbeyond 180 days.308. Per our present Specification for Highways and Bridges including amendments, it is mandatory to open PCCP to traffic not later than

a) True c) it depends on curing temperature b) False . a) 7days after pouring b) 21 days after pouringc) 14 days after pouring d) 28 days after pouring

309. In casting reinforced concrete railings, the concrete used is

316. The quality of paying concrete is usually measured by its . a) compressive c) flexuralb) tensile d) bond strength . a) ClassA1 c) Class C1b) Class A2 d) any of the preceding classes

317. Generally speaking, batching of concrete aggregates by volume is preferable than weight.a) True c) False310. For efficient compaction, the embankment materials should at the tibm) ethey are the same of rolling be . a)dry c) at optimum moisture contentb) wet d) at maximum moisture content

318. If angular coarse aggregate is used in a concrete mix, it will require more a) water c) water and fine aggregates311. For a road base course the most preferable material is one with CBRbo) fine aggregates d) neither a and b . a) 60c) 50

31b9) .30

The most favorable period for curing concrete is .d) 80

a) during the first few days or week b) after 3 daysc) after one week d) before 28 days

a) 4c) 6

320.Lower water content ratio in concrete mixes improves b) .5d) 7

a) strength c) water tightnessb) durability d) all of the preceding

329. What is the correct proportion for concrete masonry work?a) 1: 2 c) 1: 4321. When concrete must be placed in a sloping surface, placing should sbta) r1t: 3 d) 1 : 5 at the . a) bottom c) can be top orbottom b) top

330. The opening of No. 4 sieve is bigger than the opening of a sieve. a) true b)322. The maximum percent abrasion loss allowed for concrete coarse

false c) they are the sameaggregate is . a) 30% c) 45%b) 40% d) 50%

331. The standard compaction test on predominantly fine grained soils is performed on soil fraction passing sieve no. .323. The plasticity index of aggregate base course should be not greater ath) a2n00 c) 16 . a) 6 c)10 b) 8 d) 12

b) 40 d) 4

332. Which plasticity index would you prefer for the base course of324. In casting of reinforced concrete pile, the concrete used is PCC. P? a) less than 6a) A1 c) C1 b) D d) C2

325. The natural water content of highly organic soil is . a) less than 20 c) between 50 and 100b) between 20 and 50 d) more than 100%

c) 10 to 12 b)6 to 9 d) more than 12

333. A soil which is classified A-7 by the highway research board method will have a subgrade rating of .a) excellent c) fair b) good d) poor326. Which of the following dead load is equivalent for loose sand, earth andgravel fill?tons/cu. m. c) 1,603 tons/cu. m.b) 1,922 tons/cu. m. d) 2,150 tons/cu. m.

327. Rate of application for curing compound is . a) 0.30 li/sq. m. c) 0.15 li/sq. m.b) 0.20 li/sq. m. d) 0.10 li/sq. m.

33a4) .2,403The empirical number used in design is . a) plasticity index b) group indexc) both of the preceding

335. Soil is fully saturated at optimum moisture content.a) true b) false c) it depends on void ratio

328. During coring of completed pavement, how many cores /km/lan3e36is. Water content of soil is generally base on .required as per specification?

a) total weight of soil c) weight of solids b) total volume of soil d) unit weight test

337. Optimum water content of soil is determined by .345. Soil is fully saturated if the water content is .a) field density test c) compaction test b) liquid limit test d) unit weight test

a) at optimum amount c) more than 100&%b) 100% d) none of the peceeding

338. The particle size distribution of soil is determined by 346. . The density to which a soil can be compacted is related toa) liquid limit granular c) sieve analysis testb) plastic limit test d) any of the preceding test

. a) compactive effortc) both a and b b)water content d) neither a or b339. Which of the following are most suitable for construction of highwayembankments?granular c) plasticb) fine- grained d) clayey

34a7) . Specification require 1 quality test every of asphalt mix. a) 40 tonc) 50 tonsb) 130 tons d) 150 tons340. The particle size distribution of sandy gravel is determined by .a) hydrometer test c) dilantacy testb) sieve test d) any of the preceding test

348. All asphalt are , they became harder as temperature decreases and softer as their temperature increases.a) thermoplastic c) brittle341. The best soil for a road subgrade would behave a group index of

b) hyrophobic d) none of the above

3 c) 11 to 15b) 5 to 10 d) 16 to 20

a) less than349. The viscosity of the asphalt during mixing and lay down is . a) viscosity at 135*Cc) viscosity at 60*C b)342. The highest moisture content in the plastic state of fine grained soil visiscosity at 125*C d) viscosity at 163*Cthe . a) liquid limit b) plastic limit350. The trial section for compaction for each type of fill materials and343. Which of the following is characterizes unsuitable materials?a) soil with liquid limit exceeding 80 b) plasticity index exceeding 55c) soil with natural water content exceeding 100%d) all of the above

344. Shringkage factor test is . a) test to determine pay volumeb) test to determine strength characteristicc) test to determine volume changed) test to determine maximum density

type of equipment to be used in the work should have an areaof . a)500 sq. m. c) 600 sq. m.b) 335 sq. m. d) 400 sq. m.

351. Control slip shall have an area of approximately . a) 500 sq. m. c) 600 sq. m.b) 335 sq. m. d) 400 sq. m.

352. Fine aggregate used in asphalt mix is the one . a) passing the no. 8 sieve

b) passing the no. 30 sieve c) passing the no. 200 sieve d) returned the no. 8 sieve

353. The corrugation produce by brooming is . a) 1.5 mm. c) 2.5 mm.b) 2.0 mm. d) 1.0 mm.

354. The higher the , the lower the penetration. a) specific gravity c) durabilityb) viscosity d) solubility

a) 60% c) 50%b) 55% d) 70%

360. In DPWH Contract Projects, Quality Control is the sole responsibility of .a) the DPWH project personnelb) the governments Materials Engineer c) the Contractor

361. As Materials Engineer, when is the right time to start sampling and testing of materials to be incorporated into the work?a) before final payment b) before start of work items355. The required thickness of the thermoplastic paint in PCCP is c) .before first partial payment a) 3.2 to 4.8 mm. c) 3.3 to 3.8 mm.b) 3.0 to 4.5 mm. d) 3.2 to 4.0 mm

362. The Spot Test on asphalt is used to determine what?a) cleanliness c) safe working356. What percent of hydrated lime shall be added to the mixture during temperature b)overheating duringmixing operation of asphalt mix?a) 0.5 to 1.0 mass % c) 0.75 to 1.2 mass %b) 1.0 to 1.5 mass % d) 0.2 to 0.7 mass %

manufacture d) viscosity of the mix

363. Under what climate conditions do we use higher penetration grade asphalt cement? a) hot climate357. As Materials Engineer, what would you recommend in order to checkc)thceold climate b)suitability and efficiency of the equipment to used prior to subbase construction for item 310, Bituminous Concrete Surface Course?

rainy weather d) none of the abovea) make a trial section c) make trial mixb) establish control strips d) none of the above

364. What is the basis for rejection or acceptance of any constructionmaterials? a) Certificate of Billingc) Statement of work accomplished b)358. Quality of factor produced reinforced concrete pipes may be best

Materials Test Report d) none of the abcveestablished through what? a)compressive strength test b) flexural strength testc) core testd) crushing strength test

365. Initial rolling of bituminous mixes shall be performed with a roller. a) vibrator c) sheepfootb) pneumatic d) none of the above

359. Result of Immersion Compression test conducted on a bitumi3no6u6s.

mixIn abituminous mix sample, what is the % of asphalt by a) weightsample are as follow: Dry stability + 2,000 Kpa, Wet stability = 1,000 Kpoaf ,aggregate and by b) weight of mix? Given the following data:What is the resulting Index of Retained Strength?

Weight of dry aggregates (after extraction) = 950 grams: Weight of

Mix = 1010.A. a) 6.32% b)5.50% c) 6.0% d) none of the aboveB. a) 5.50% b) 6.32% c) 6.0% d) 5.94%

b) penetration grade and quantity of asphaltc) density and compaction of completed pavement

367. What grade of asphalt has a penetration grade of 0 30?a) emulsified asphalt c) blown asphaltb) asphalt cement d) none of the above

375. In asphalt pavement construction, how is the surface level of the completed pavement check? a) by T core test b) by density test c) by the use of 3 meter straight edge

376. What primarily influence the grade of asphalt to be selected?368. Problems regarding quality of construction materials shall be reportead) penetration c) climatedirectly by the Contractors Materials Engineer to the .a) DPWH Materials Engineer c) Contractors Project Engineer

b) class of aggregate d) temperatureb) Contractor d) none of the above

377. Who will approve the Job Mix Formula?a) DPWH Project/Materials Engineer369. If the RC pipes in the forgoing problem is not cast in the field, how mba)nCyontractorpipes will be required to be subjected to the Crushing Strength test?a) 75 pcs. b) 70 pcs. c) 100 pcs

c) Contractors Materials Engineer378. What control during the mixing and compaction of the bituminous370. How many concrete cylinder samples are required for 3,500 pcs. of pavement is of great significance in the resulting pavement?reinforced concrete pipes? a) 14 sets of 3 c) 75 sets oaf) 3compaction c) grading of aggregatesb) 140 sets of 3 d) none of the above

b) density d) temperature

371. What is the bitumen obtained from the distillation coal or woo3d7?9. In asphalt pavement construction, there are three phases ofa) rock asphalt c) emulsionb) tar d) none of the above

rolling; what kind of roller is required to be used for the final compaction and smoothing?a) pneumatic roller b) sheepfoot roller c) tandem- smooth wheeled372. How do you reduce the viscosity of Medium Curing Cutback Asphalrto?llerBy mixing it with .a) gasoline c) kerosene b) diesel d) emulsion

380. What is the maximum speed of the roller in compaction of asphalt pavement? a) 4 kph c) 8 kph b)373. What establish the exact percent of aggregates and asphalt content5inkpah d) 6 kphbituminous mix .a) design mix c) job mix formulab) job order d) extraction formula

381. What shall be checked after final rolling?a) degree of compaction b) optimum asphalt content c)quantity of aggregates374. What greatly influence the serviceability of an asphalt pavement?a) quality of aggregates and climate

382. When is the completed asphalt pavement opened to traffic?a) when the asphalt has cooled to atmospheric temperature

391. For 250 gallons of Reflectorized Traffic Paint, how many samples are required to be submitted for Quality Testing?b) when the asphalt has cooled to +/- 10*C of the spreading temperaturae) 3 samples b) 2 samples c) 4 samplesc) when asphalt is still hot392. The bituminous mix should have a mass % of air voids within the383. The apparatus used in determining the consistency of asphalt cemenratnisge of . a) 2 to 3% b) 1 to 4% . a) penetrometer b) viscometer cc)) 3 to 5%thermometer

384. How is the consistency of liquid asphalt determined?a) viscometer b) Tag open cup c) penetrometer

393. Traffic paint shall be applied to the pavement at the rate of 0.33 li/sq. m. and shall dry sufficiently to be free it from cracking from . Ans. 150to 30mins.385. The Optimum Asphalt Content obtained in Marshall Stability Test is theaverage asphalt content of the Maximum Stability, Maximum Bulk 3S9p4e.cific This is the only class of riprap that may consist of round naturalGravity, and . a) 4% Air Voids b) 2 mm flow c) 5% mineral content

stones. Ans.. Class A Riprap395. The surface of riprap shall not vary from the theoretical surface386. What test determines the safe working temperature of the asphalt? by more than mm. ay any point.a) Ductility test b) Flash Point Test c) Stability Test

Ans.. 100 mm.

387. are usually tested for extraction.

396. Fine aggregates of masonry shall all passes the

mm.a) Asphalt Mixes b) emulsions c) asphalt cement

sieve. Ans.. 2.36 mm (No. 8 sieve )

388. Steel bars for the concrete reinforcement are tested for their 397. Mortar that is not used within minutes after the water hasproperties. a) tensile and bending b) compressive c) crushing

been added shall be discarded. Ans. 90 minutes

389. What method is used in determining the strength of concrete p3ip9e8s.?

Maximum projection of rock faces beyond the pitch lines shall nota) third point loading methodb) center point loading method c) three edge bearing method

be more than . Ans.. 50 mm.

399. In hot or dry weather, the masonry shall be satisfactory protected from the sun and shall be kept wet for a period at least 390. How many units shall be tested for strength, moisture and absorptioanftienr completion. Ans..a lot of 120,000 CHB Ans.. 18 units

Three ( 3 ) days

400. For pavement markings, the composition of white paint shall be pigment and % of vehicleAns.. 42 45 % pigment ; 53 55% vehicle

410. Expansion joint filler having a nominal thickness of less than mm. shall not be subject to a requirement for compaction. Ans.. 13 mm.401. The composition of yellow paint shall be pigment and vehicle. Ans.. 23% pigment and 77% vehicl4e11. Strip of the joint filler that do not conform to the specified dimension within the permissible variation of mm. thickness402. The material shall be of such quality that it will not darkenWor in depth shall be reflected.become yellow when a thin section is exposed to sunlight. Ans.. Non volatile material

Ans. +/- 1.6 to 0 thickness ; +/- 3mm. in depth

412. These are finely divided residue that result from the combustion403. consist of beads of good quality, optically clear, lead freeof ground or powdered coal. Ans. Fly Ash glass with not less than 90% reasonably spherical and free from flows.Ans. Ballotini for reflective road paint

413. A light spray application of asphalt to an existing pavement as a seal to inhibit raveling, or seal the surface or both.404. is a reflector which shall be the short base type having aAns.. Fog Seal maximum base area of 180 mm x 140 mm.Ans. Flash surface reflective stud

414. A light application of bituminous material for the express purpose of laying and bonding loose dust.405. The pads shall be highly resilient and durable rubber reinforced withAns.. Dust Binder canvas and shall have a design life of at least .Ans. Five ( 5 ) years

415. The aggregate that is graded from the maximum size, down to and including filler, with the object of obtaining a bituminous mix406. The reflectors shall have the minimum specific intensity value exprewssitehda controlled void content and high stability is called. Ans.as of illumination.Ans.. Candle power per foot candle

Dense graded aggregate

416. The bituminous material used to fill and seal cracks in existing407. The reflector shall support a vertical load of when tested.Ans. 10 KN

pavement is called . Ans. Crack filler417. The application of sprayed bituminous coatings not involving the408. When raised profile type reflector are specified the approved use of aggregate is called .epoxy adhesive shall be used . Ans. Two ( 2 ) parts

Ans. Bituminous application

418. A mixture of bituminous material and mineral aggregate usually409. Expansion joint filler having a nominal thickness of less than prepared in a conventional hot mix plant or drum mixer at amm. shall not be subject to a requirement for water absorption. Ans. 9.5 mm

temperature of not more than and spread and compacted at

the job site at a temperature above .426. is a combination of bituminous material and mineral

Ans. 260*F (127*C)/200*F (93*C)aggregate applied at ambient temperature for use in patching holes,

depression and distress area in existing pavement. Ans.419. is an application of low viscosity bituminous material to anMaintenance Mix absorptive surface designed to penetrate, bond, and stabilize this existingsurface and to promote adhesion between it and the new super-im4p2o7s.e is a pavement construction using essentially one-size construction. Ans. Primaeggregate which penetrated in place by an application of highCoat

viscosity bituminous material followed by an application of smaller size course aggregate and thoroughly rolled,420. A uniform application of a mixture of emulsified asphalt, fine aggregAantes,. Penetration Macadam mineral filler, and water to an existing pavement , single or multipleapplication may be used. Ans. Slurry Sea4l 28. The glass beads used in traffic paint shall have a minimum of % true spheres. Ans. 70%421. is an application of bituminous material applied for anexisting, relatively non-absorbent surface to provide a thorough bo4n2d9. The glass beads shall have a minimum refractive index of .between old and new surfacing. Ans. Tack Coat

Ans. 1.50

422. is a bituminous aggregate application to any type 4o3f 0ro. ad oTr he white thermoplastic material shall not exceed a yellowish pavement surface for the purpose of providing a wearing course, or surfiancdex of . Ans. 0.12seal or both. Ans.Treatment and Seals

431. The thermoplastic material shall have a maximum percent residue of after heating at 8 +/- 0.5 hours at 218 +/- 2*C423. is a bituminous-sand application to an existing pavementAntos. 28%seal the surface and to function as a light wearing course.Ans. Sand Seal

432. The softening point of thermoplastic paint should be .Ans. 102.5+/-9.5*C424. is a spray application of bituminous material used totemporarily stabilize a recently seeded area. The bituminous mate4ri3a3l .can bWe hat kind of water shall be used in laboratory test especially if itapplied to the soil or to a straw or hay mulch as a tie down. Ans. Mulch treatment

deals with chemical? Ans. Distilled Water

434. Liquid limit brass cup with a sample is raised and allowed to drop425. is a combination of bituminous material and aggregate thshaat rips ly on the base through a height of what?physically mixed by mechanical means, spread on the job site and compacted. Ans. Bituminous

Ans. 10 mm.Aggregate Mixtures

435. How many rotation per second will the c