What test determined the crushing of strength of aggregates to ensure thatcoarse aggregates will not degrade to smaller ones.a. Abrasionb. Gradingc. Densityd. Plasticity test

A one-lane road, with of 3.5 meters and shoulder width of 0.5 meter oneach side of the pavement was designed to have sub-base and basecoarse with a combined thickness of 300mm. If the thickness of thesub-base is 125mm, the spreading and compaction of the sub-base andbase coarse shall be carried out ina. 3 layers over the full width of 4.5 mb. 2 layers over the full width of 4.5 mc. 3 layers over the full width of 3.5 md. 2 layers over the full width of 3.5 m

Weakened joints on concrete pavement should be saweda. Immediately after the pavement surface has been brooms finishedb. Sawing of joints shall commerce as soon as the concrete has hardenedsufficiently, usually within 24 hoursc. Before the pavements opened to traffic usually 14 days from the day of pouring

What depth of weakened joint should at all times not be less thana. 50 mmb. 60 mmc. 70 mmd. 75 mm

Cores are taken from a concrete pavement and tested fora. Strength verification of concrete in place that is considered adequateb. Flexural strength determinationc. Cement content determinationd. Thickness determination

In accepting completed concrete pavement poured by lane thicknessdetermination shall come out by obtaining one core from every a. 100 metersb. 200 metersc. 500 metersd. 1000 meters

If the strength of Item 311 control specimens does not meet the requirements by not more than 25% and it is not feasible to obtain cores from the structure due to structural consideration:a. The strength of in-place concrete will be determined by rebound a hammerb. Pavement of the concrete will be made at an adjusted pricec. No pavement will be made on the concrete represented by thefailed specimend. The contractor will be required to remove and replace the concrete represented by the failed specimens at his own expense.

The flexural strength requirements of item 311 isa. 500 psib. 550 psic. 3000 psid. 3500 psi

The number of sets of beam test specimens that should be taken from 700 sq.m. of concrete pavements, 0.23 cm thick poured on a single day should be:a. 2b. 3c. 6d. 9

Three cores taken from a pavement section poured on a single day were tested to have strength as follows:Core136502300086% of 3500 psi3245070% of 3500 psiAverage303387% of 3500 psi

If the required strength is 3500 psi concrete are represented by the coresa. Maybe accepted, subject to price adjustmentb. Is considered adequatec. Is considered inadequated. May be recored at the initiative of the implementing office

Forms for concrete pavement shall remain in place undisturbed for not less thana. 24 hours after concrete pouringb. The curing periodc. The period required to attain the design strengthd. 72 hours after concrete pouring

The Ph value of water that is acceptable for use in concrete mix is a. 2.0 to 3.1b. 3.2 to 4.4c. 4.5 to 8.5d. 8.6 to 10.0

How many measurements are needed for thickness determination of concrete cores?a. 4b. 6c. 8d. 9

14. What is the strength for load bearing hollow blocks?a. 600 psib. 700 psic. 800 psid. 1000 psi

What is the single factor that determines the strength of concrete?a. Slumpb. Water-cement ratioc. Cement factord. Gradation of aggregates

16. What is the curve formed on a maximum dry density and optimum moisture content graph?a. Parabolab. Hyperbolac. Straight lined. None of the above

Which of the following is accepted for concrete with fc at 28 days of 3500 psi?a. 3275 psi; 3020 psi; 2630 psib. 2640 psi; 3010 psi; 3030 psic. 3030 psi; 2790 psi; 2599 psid. 3300 psi; 3330 psi; 2620 psi

In a design mix, the specific gravity of Portland cement must bea. 3.05b. 3.10c. 3.15d. 6.10

The role of application of prime coat before asphalt overlaying isa. 0.2 to 0.7 l/sq.m.b. 0.8 to 0.9 l/sq.m.c. 1.0 to 2.0 l/sq.m.d. 2.1 to 2.5 l/sq.m.

20. The most commonly used method in the design and evaluation of bituminous concrete mixesa. Design mixb. Marshall stabilityc. Index of retained strengthd. Immersion / compression test

Which of the following penetration grade of asphalt is used in cold climate?a. 120/50b. 85/100c. 60/70d. 40/50

If sea water is used in a concrete mix, shat will be the effect on the hardened concrete pavement?a. Strength is affectedb. Scaling at surfacec. Cracks at the sided. Steel bars will rust

The job mix formula contain the following provision excepta. Grading of aggregateb. Temperature of aggregates and asphaltc. Index of retained strength valued. Type of asphalt and percentage

Scaling of newly constructed concrete pavement is an evidence of inadequate quality control mainly due to higha. Fineness modulesb. Slumpc. Fine aggregates contentd. Water cement ratio

The grade designation of a reinforcing steel bars is also itsa. Nominal areab. Yield strengthc. Tensile strengthd. Unit mass

Which of the following is not an engineering property of granular soils?a. Good load bearing qualitiesb. Drain readilyc. Susceptible to strength or volume change due to change in water contentd. Comparatively incompressible due to static load

Peat is an example ofa. Inorganic soilb. Organic soilc. Selected borrowd. Embankment material

Which of the following is an engineering property of line grained soil?a. hard to drainb. Susceptible to volume change under vibratory load, if not adequately compactedc. Stable when subjected to loadd. Settlement is high

The dividing size between coarse and fine aggregates used in asphalting isa. no. 4b. No. 8c. No. 16d. No. 30

The objective of designing the asphalt mixture is determination of a. Index of retained strengthb. Penetration grade of asphaltc. Temperature of mixd. Production control

The sample of reinforcing steel bars for every 10,000 kgs shall bea. 1 meter longb. 2 meters longc. 4 meters longd. 6 meters long

Given: Specific gravity = 2.305 Wet compressive strength = 1000 kpa Dry compressive strength = 1400 kpaWhat is the index of retained strength value?a. 70.1%b. 71.4%c. 40%d. 140%

The variation on tolerance of the surface from the testing edge of the straight edge in contact with the surface of asphalt pavement isa. +/- 2mmb. +/- 4mmc. +/- 6 mmd. 5 mm

The specific irregularity tolerance for item 201 isa. 5 mmb. 10 mmc. 15 mmd. 20 mm

35. The depth of the weakened plane joint with a width of 6 mm isa. 40 mmb.45 mmc. 50 mmd. 60 mm

Which of t he following is not the job for a materials engineer?a. Submits samples for testingb. Prepares design mixc. Checks job mix formulad. Surveys and measures line and grade at site

The proper way of sampling of aggregate base course in the laboratory if the the splitter is not availavle is toa. Scoop for samples in the middle of the sackb. Spread the samples on the ground and take the samples in the middlec. Spread the samples on the ground and divide the samples into four and take two opposite parts from it.d. Scoop for samples at the side of the sack

38. Given :Original weight of sample, g 5000, Sample retained on No. 12 sieve, g 4178What is the abrasion loss?a. 16.42%b. 16.44%c. 19.67%d. 19.76%

Which is true on conducting of a slump test?a. Consistency of mixture is checked by the slump testb. It is simple, but important, n indicator of water cement ratioc. Slump cone is used together with tamping rod and rulerd. All of the above

Reinforced concrete puipe culvents are tested for compressive strength to produce _______ crack.a. 0.20 mmb. 0.25 mmc. 0.30 mmd. 0.35 mm

The bituminous materials commonly used in item 310 isa. Asphalt emulsionb. Asphalt cement c. Liquid asphaltd. Cutback asphalt

Item 310 mixture shall have an index of retained strength of not less thana. 66b. 70c. 97d. 107

Final compaction and smoothing of item 310 should be done by aa. pneumatic tired rollerb. Sheep foot rollerc. Vibratory rollerd. Tandem smooth wheel roller

Item 310 mixture shall be delivered to the paver at a temperature not less thana. 66 Cb. 97 Cc. 107 Cd. 110 C

45. In the asphalting of a two lane, 500 meter road which lasted for three days, how many core samples should be taken from the pavement if no sample was taken at the end of each days operation?a. 3b. 5c. 6d. 10

46. Which of the following provisions is not included in the job mix formula?a. Mixing timeb. Grading of aggregatesc. Asphalt cementd. Temperature at delivery

47. A bituminous mix subjected to immersion compression test yielded a dry stability of 2.0 kg and a wet stability of 1.5 kg. The index of retained strength of the mix isa. 0.5b. 1.33c. 33d. 7548. In item 310, bitumen content, expressed in terms of percentage by mass of aggregate, shall bea. 3 to 5 %b. 4 to 7 %c. 5 to 8 %d. 6 to 8 %

In the asphalting of a 3 meter wide, 200 meter long road lane, a core was obtained and tested to have a thickness of 5 cm. And a density of 2.25 gm/ cm. the quantity of bituminous mix to be paid, in tonnes, isa. 65.5b. 67.5c. 655d. 675

50. After final rolling, the compacted asphalt pavement shall have a density equal top, or greater than % of the laboratory compacted density.a. 90b. 95c. 97d. 98

51.Scales for weighing aggregates and cement shall be accurate within % throughout the range of use. Scales shall be inspected and sealed as often as the Engineer may deem necessary to assure their continued accuracy,a. 1.0%b. 1.5%c. 0.5%d. 2.0%

52. When cement is placed in contact with the aggregate, batches maybe rejected unless mixed within ____ hours of such contact.a. 1.5 hoursb. 2.0 hoursc. 0.5 hoursd. 2.0 hours

53. When mixed at the site or in a central mixing plant, the mixing time not be less than ____ nor more than ____unless mixer performance test prove 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 secondsd. 90 seconds nor more than 120 seconds

54. The flow of water shall be uniform and all water should be in the drum by the end of the first ____seconds of the mixing period.a. 45 secondsb. 30 secondsc. 15 secondsd. 20 seconds

55. Concrete not place within ____minutes from the time the ingredients were charged into the mixing drum shall not be used.a. 120 minutesb. 150 minutesc. 60 minutesd. 90 minutes

56. When concrete is delivered in truck mixers, additional water maybe 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 ____after the initial mixing operation and water and cement ratio is not exceeded.a. 30 minutesb. 15 minutesc. 45 minutesd. 60 minutes

57. A sample from a bituminous mix weighs 1000 grams. At extraction, it was found out that the dry aggregate weighed 950 grams, What is the % of asphalt by weight of mix?a. 5.2%b. 5.0%c. 5.4%d. 4.8%

58. The minimum penetration of the preservative with the surface of the timber piles shall be ____.a. 150 mmb. 20 mmc. 250 mmd. 10 mm

59. The contractor shall submit in writing a job-mix formula for the mixture supported by the laboratory test data along with samples of resources of components and viscosity-temperature relationship to the Engineer for testing and approval at least ____.a. two weeksb. three weeksc. one weekd. four weeks

60. The concrete samples should be stored in a moist conditioned temperature within the range of ____until the time of test.a. 18*C to 24*Cb. 15*C to 18*Cc. 14*C to 24*Cd. 18*C to 28*C

61. This is used in soil stabilized road surface due to its high____ property, tha is, it absorb and retain water.a. Potassium Chlorideb. Calcium Chloridec. Magnesium Chlorided. Sodium Chloride

62. The mass % wear of soil aggregate used in cement/lime proportions should not be more than ____.a. 40%b. 50%c. 45%d. 55%

63. The uniform rate at which the movable head of CBR machine tray is ____.a. 0.07 in/minb. 0.10 in/minc. 0.08 in/mind. 0.09 in/min

64. Cast in place concrete shall not be post-tensioned until at least ____ and until the compressive strength has reached the strength specifieda. 7 daysb. 10 daysc. 14 daysd. 20 days

65. The penetration test is an indication of the ____of asphalt.a. Consistencyb. Softnessc. Hardnessd. Flash Point

66. Specification requires one (1) Quality test for every ___of asphalt.a. 20 tonsb. 200 tonsc. 50 tonsd. 40 tons

67. The ___is the most commonly used method in the design and evaluation of bituminous concrete mixes.a. Job Mix Formulab. Design Mixc. Marshall Stabilityd. Extraction

68. Vibration shall operate a frequency of 8,300 to 9,600 impulses per minute under load at a maximum spacing of ___cm.a. 30 cmb. 50 cmc. 60 cmd. 40 cm

69. The specific gravity of Sodium Sulfate used in soundness test for aggregate should be within the range of ___.a. 1.151 to 1.174b. 1.250 to 1.178c. 1.051 to 1.154d. 1.058 to 1.184

70. The specific gravity magnesium sulfate solution used in soundness test for aggregate should be within the range of ___.a. 1.280 to 1.408b. 1.180 to 1.308c. 1.295 to 1.308d. 1.195 to 1.318

71. Aggregate accounts for 92-95% of the weight of the bituminous mixture asphalt accounts for 5-8% of the weight of the mix. The exact percentage to be used is determined by the ___.a. Trial Mixb. Design Mixc. Job Mixd. Job Order72. ___is an indication that the asphalt mix is overheated.a. Blue smokeb. Stiff appearancec. Rising steamd. Mix slumps in truck

73. In checking the temperature of the mix, the thermometer should be inserted into the mix at least___.a. 2 inchesb. 6 inchesc. 4 inchesd. 6.0 mm74. ___is applied on existing bit, or cement concrete surface with bituminous materials.a. Bituminous Prime Coatb. Bituminous Tack Coatc. Bituminous Seal Coatd. Bituminous Surface Treatment75. The solution used in the soundness test of aggregate shall be cooled to a temperature of 21+of-1*C and maintain at that temperature for at least ___.a. 24 hoursb. 36 hoursc. 48 hoursd. 18 hours

76. Proper compaction of the fill materials is very important, as it will ____. a. Increase in the shear strengthb. Decrease permeabilityc. Minimize compressibilityd. All of the above77. In which DPWH item is emulsified asphalt not suitable?a. Item 301b. Item 302c. Item 304d. Item 30878. Unconfined compressive strength test is usually performed on ____.a. Sandy soilsb. Silty soilsc. Organic soilsd. Clayey soils

79. Consolidation test is usually performed on___samples.a. Disturbedb. Undisturbedc. Consolidatedd. Both a & b

80. A concrete core sample having a maximum height of less than ___ of its diameter before capping or height less than its diameter after capping shall not be tested. a. 93 %b. 94 %c. 95%d. 96%81. The cohesion and internal friction of soil is tested bya. Triaxial shear testb. Direct shear testc. Bearing testd. All of the above82. In concrete acceptance, core will be considered adequate if the average strength of the cores is equal to what?a. 80%of specified strength &if no single core is less than 75% of specified strenghtb. 90%of specified strength & if no single core is less than 80%of specified strength c. 85%of the specified strength & if no single core is less than 75% of specified strength.

83. Before the cement is to be used, sampling must be done at least ___before use.a. one weekb. 14 daysc. two weeksd. 12 days

84. Asphalt cement shall not be used while it is foaming nor shall be heated at ___anytime after delivery.a. 107*c. 120*b. 159*85. Moisture content of aggregates in bit.mix shall not exceed ___of the time it is introduce into the mixing unit.a. 1.5 mass %b. 2.0 mass %c. 1 mass %

86. Batching tolerance for Sand and Aggregates is ___.a. 1 %b. 2%c. 3%

87. Between stage of curing, concrete shall not be exposed for more than how many hours?a. 24 hoursb. 3 hoursc. hoursd. 72 hours88. As Materials Engineer, what will you do with major honeycomb 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 contractor

89. If the strength of control specimen does not meet the requirement and not feasible to obtain cores due to structural consideration, as Materials Engineer what will be your decision?a. Remove and Replacedb. Area will not be paidc. Payment will be made at an adjusted price

90. After concrete has been placed, it is advisable to maintain fully wetted and in position for how many hours?a. 14 hoursb. 24 hoursc. 72 hoursd. 15-18 hours91. Rock shall be excavated to a depth ___below sub grade within the limit of the roadbeda. 100 mmb. 150 mmc . 200mm

92. Minimum penetration of all piles shall be ___.a. 3 metersb. 6 metersc. 7 metersd. 4.5 meters93. Piles shall not be driven within 7 meters of concrete less than ___a. 7 daysb. 14 days c. 28 days94. Paint contains ___ of pigment and ___ vehicle.a. 20% & 80%b. 21% & 79%c. 79% & 21%d. 80% & 20%

95. Minimum thickness of bedding materials beneath the pipe is ___.a. 100 mmb. 150 mmc. 200 mm

96. Tolerance of gabion dimension is ____.a. +/- 1%b. +/- 2%c. +/- 3%d. +/- 4%97. Minimum size of galvanized wire mesh is__.a. 2.0 mmb. 2.2 mmc. 2.7 mmd. 3.4 mm98. Minimum density of gabions is ____.a. 1,000kg/cum.b. 1,200kg/cum.c. 1,400kg/cum.d. 1,500kg/cum.

99. Soundness loss of field gabions is ___.a. 9%after 5 cyclesb. 10%after 5 cyclesc. 11%after 5 cyclesd. 12%after 5 cycles

100. The heating temperature of reflectorized thermoplastic material during application is __a. 130+/-7*Cb. 150+/-7*Cc. 200+/-7*Cd. 211+/-7*C

101. Submission of sample minimum quantity of material for asphalt cement is ___a. 5 kg.b. 10kgc. 20kgd. 100kg102. For how many years does the small Contractor given to procure necessary testing equipment?a. 2 yearsb. 4 yearsc. 5 yearsd. 6 years

103. The depth of the weakened joints must be less than ___ and a width of ____.a. 40mm & 6mmb. 50mm & 5mmc. 40mm & 5mmd. 50mm & 6mm

104. Used of bituminous cold mix for potholes patching during rainy/wet period is acceptablea. Truec. False105. In soil boring shall be carried to a depth of at least ___below the proposed grade line.a. 0.5mb. 1.0mc. 1.5md. 1.8m106. The test that determine the pile bearing capacity by loading one or more pile and measuring settlement under load is ___a. Vane shear testb. Plate bearing testc. Pile load test

107. The weight of disturbed samples from hard auger or split spoon shall be at least__.a. 1 kgb. 20kgc. 10kgd. 100kg

108. The length of Shelby Tube of an undisturbed sample is ____.a. 10longb. 18longc. 20long109. For small project where quantity of steel bars is 10,000kg.or less, what is the basis of acceptance of material?a. No testingb. P.E.Certificate c. Mill Certificate110. ___determine the best combination of the material that will produce potentially stable & durable mixture.a. Job mix formulab. Marshall formulac. Design of bit.mix

111. ___is the rate of loading for concrete cylinder sample subject to compression testa. 20-40psi/secb. 20-50psi/secc. 15-40psi/secd. 15-50psi/sec

112. In soil exploration, if the characteristic of rock is questionable, the minimum depth of boring into the bedrock should be ____.a. 1.5mb. 2.0mc. 2.5md. 3.0m113.Determine the soil bearing capacity by loading a steel plate usually 30diameter.a. Vane shear testb. Plate bearing testc.Pile load testd.None of the above114. How many hours do aggregate stockpile or binned for draining before being batch?a. 1 hourb. 6 hoursc. 12 hoursd. 24 hours115.What is the rate of loading of concrete beam tested for flexural stress?a.125-175psi/sec.b. 115-150psi/secc. 110-150 psi/secd. 130-175 psi/sec.

116. 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 standards?a. not less than 90%b. not less than 80%c. not less than 95%d. not less than 98 %117.In concrete sampling paste shall be of normal consistency of ______ when the rod settles to a point below the original suface in 30 seconds.a. 10+/- 1 mmb. 11+/- 1 mmc.15 +/- 1 mmd. 20 +/- 1 mm118. What is the curing temperature of a concrete sample?a. 10-15 *Cb. 18-24*Cc. 15-18*Cd. 16-27*C119.What is the wash loss of fine aggregates in the no.200 sieve?a. 1 %b. 2 %c. 3 %d. 4 %

120. Retarder can delay the setting time of concrete up to how many hours?a. 1 hourb. 2 hoursc. 4 hoursd. 8 hours121.Super plasticizer can increase the strength of concrete up to how many percent ? a. 40-60 %b. 50-60 %c. 50-70 %d. 60-70%122._________ is the moisture in an air dried soil.a. Moisuture Contentb. Natural Moisture Contentc. Hygroscopic Moisture Contentd. Hydrometer Moisture Content

123._________is the tolerance of mix in a bituminous temperature.a. +/-10 *Cb. +/-12 *Cc. +/- 15 *Cd. +/- 18 *C

124._________number of measurement taken in a core sample for thickness determination of the finish asphalt pavement.a. 3b. 4c. 5d. 8

125. In the absence of beam mold in site, cylinder mold is allowed by specification. What is the required strength?a. 2500 psib. 3000 psic. 3500 psid. 4000 psi

126.Prime coat shall be left undisturbed for at least ______.a. 6 hoursb. 12 hoursc. 24 hours127.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 *Fb. 190-199 8Fc. 160-180 *Fd. 150-185 *F

128.How many gradation ranges for hot plant mix bituminous pavement are there in the blue book?a. 5b. 6c. 7d. 8

129. What is the plasticity index of mineral filler?a. not greater than 4b. not greater than 6c. not greater than 8d. zero130.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./laneb. for every 150 l.m./lanec. for every 100 l.m./laned. for every 1,000 l.m./lane131.__________ is the slump of workable concrete if vibrated.a. 10-20 mmb. 10-40 mmc. 40-50 mmd. 40-75 mm

132.________Burnt product which is used by Gypsum and pulverized to form Portland Cement.a. Hydraulic Cementb. Clinkerc. Fly Ashd. Volcanic Ash

133.When group index=0 what is the grade of soil?a. weak soilb. poor soilc. good soil

134.________ is the limit were further loss of water due to evaporation which sill not result in reduction of volume.a. Plastic Limitb. Liquid Limitc. Shrinkage Limit

135.________ a classification of soil which 35% or less the particles pass through no. 200 sieve .a. Grain size soilb. Granular Materialsc. Silty Clay Materialsd. Clayey Materials

136.________ a classification of soil which 35% more of the particles pass through 200 sieve.a. Course Sand Soilb. Granular Materialsc. Silty-Clay Materialsd. Clayey Materials137.It evaluate the quality of soil as highway sub-grade material.a. Attenberg Limitb. Plasticity Indexc. Group Indexd. Liquid Limit

138.When soil has plasticity index value of 10. What is the criteria of the material?a. Coarse Grainb. Sandyc. Clayeyd. Silty

139.It indicates good subbase materials when G.I. Is equal to ________.a. 0b. 5c. 10d. 20140.It indicates very poor subbase materials when G.I. is equal to _____.a. 0b. 5c. 10d. 20141.It indicates the composition of soil.a. Attenberg Limitb. Plasticity Indexc. Group Indexd. Liquid Limit

142.The higher value of PI of the soil, the weaker will be the soil performance as a _________.a. Trueb. Falsec. Dependd. None of the above

143._______ is the minimum percent of A-6 group classification of soil.a. 0b. 6c. 20d. 35

144.When the value of G.I. Is negative, what will be the soil performance?a. Poor Subgradeb. Very good Subgradec. Good Subgraded. None of the above145.The weight of Sandy soil for Hydrometer Analysis is _______.a. 10 gramsb. 25 gramsc. 50 gramsd. 100 grams

146.________ is a type of soil in which most of the soil grains are of the same size.a. Poorly gradedb. Well gradedc. Cap gradedd. None of the above

147.Percent passing loose for coarse aggregates when tested for clay lump is _______.a. 1.0 percentb. 0.25 mass percentc. 0.8 percentd. 1.0 mass percent

148.The mass percent passing loose for coarse aggregates when tested soft fragment is _______.a. 0.10 b. 0.25c. 3.5d. 1.0

148.If slag is used, the density of coarse aggregate is ________.a. 30-100 kg/cu.m..b. 150 kg./cu.m.c. 1,120 kg/cu.md. 1,400 kg/cu.m.

149.Mass percent loose for fine aggregates when tested in Clay lumps is ____.a. 0.10b. 0.25c. 0.80d. 1.0

150. _______ is a type of cement which shall be transferred to an elevated, air tight and weather proof bins storage.a. Portland Cementb. Pozzolan Cementc. Bulk Cementd. None of the above

151.Scales for weighing aggregates and cement shall be accurate within _____.a. 0.1%b. 0.25%c. 0.5%d. 1.9%

152._______ determines the resistance of the emulsion to break with mixed with mineral aggregates.a. Viscosity Testb. Distillation Testc. Spot Testd. Cement Mixing

157.How many days do the specimen for CBR soaked?a. 1 dayb. 2 daysc. 3 daysd. 4 days

158.When mixed at the site or in a central mixing plant, the mixing time shall not be less than _____________ nor more than _____________unless mix performance test prove adequate of the concrete in a shorter time period. a. 50 second and 90 secondsb. 30 seconds and 70 secondsc. 20 seconds and 60 seconds

159.The batches shall be so charged into the drum that a portion of the mixing water shall enter in advance of the cement and aggregate. The flow of water shall be uniform and all water should be in the drum by the end of the _____________ of the mixing period.a. 20 secondsb. 15 secondsc. 10 seconds

160. The time elapsed from the time water is added to the mix until the concrete is deposited at the site shall not exceed ____________when concrete is hauled in the truck.a. 60 minutesb. 70 minutesc. 90 minutes

161.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 __________ after the initial mixing operation and the water and cement ratio is not exceeded.a. 42 minutesb. 45 minutesc. 47 minutes

162.Concrete not placed within ___________ from the time the ingredients were charge into the mixing drum should not be use.a. 90 minutesb. 92 minutesc. 95 minutes

163.The completed pavement shall be accepted on a lot basis. A lot shall be considered as ______________double lane.a. 300 linear meterb. 400 linear meterc. 500 linear meter

164.Each lot shall be divided into _____ equal segment and one core will be obtained from each segment in accordance with AASHTO T24.a. 3b. 4c. 5

165.Aggregate account 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 determined by the _________.a. Blue smokeb. Job Mixc. Extraction Test

166. _____________ is an indication that the asphalt is over heated.a. Blue Smokeb. Job Mixc. Extraction Test

167. _________________________is the most common used method in the design and evaluation of bituminous concrete mixes.a. Extraction Testb. Marshall Stability Testc. Bulk Specific Gravity

168. _________________determines the asphalt content in the bituminous mixes.a. Extraction Testb. Marshall Stability Testc. Bulk Specific Gravity

169. Cast in place concrete shall not be post-tensioned until at least ________.a. 5 daysb. 10 daysc. 15 days

170. This characteristic generally used for calculation of the volume occupied by the aggregate in various mixture containing aggregates including Portland Cement Concrete, Bituminous Concrete and other mixtures that are proportioned or analyzed on an absolute volume basis.a. Apparent Specific Gravityb. Marshall Stability Testc. Bulk Specific Gravity

171. _____________________pertains to the relative density of the soil material making up the constituents particle not including the pore space within the particles that is accessible to water.a. Apparent Specific Gravityb. Marshall Stability Testc. Bulk Specific Gravity

172.Weight of sandy soil needed for Hydrometer test is ________.a. 100 gramsb. 150 gramsc. 200 grams

173. Weight of silty soil needed for Hydrometer test is __________ a. 100 grams b. 30 grams c. 50 grams d. 20 grams

174. These are widely used to control the characteristics of soil which are to be incorporated in roadway. a. Shrinkage Limitsb. Cement and Soil Limitsc. Liquid and Plastic Limits

175. This is defined as the highest moisture content of which the mass attains its minimum volume but continues to lose weight /mass. a. Shrinkage Limitsb. Cement and Soil Limitsc. Liquid and Plastic Limits

176. _____________________is an apparatus used in determination of specific gravity of Hydraulic Cement.

_____________________is an equipment used in determination of soundness of Portland Cement.

Asphalt shall be homogeneous, free from water, and shall not foam heated to _________________.

Answer: Le Chattelier FlaskAnswer: Autoclave MachineAnswer: 175*C (347*F)

179. __________________, Test of Asphalt indicate the rate at which the asphalt emulsion will break when mix with aggregate.

180. The lost in weight of rock use in gabions when tested to sodium sulfate, soundness loss shall not exceeds ______.

181. Gabions dimensions are subject to a tolerance limit of _________.

182. The pour point of concrete joint sealer shall be at least ________ lower than the safe heating temperature, which is the maximum temperature to which the material may be heated without exceeding the permitted flow.

Answer: Cement MixingAnswer: 9%Answer: +/- 3%Answer: 11*C (20*F)

183. The penetration of concrete joint sealer, Hot Poured Elastic Type shall not exceed _______.

184.The CBR is generally selected at _______________penetration.

185. The penetration piston of CBR machine should have a uniform penetration at a rate of _________________.

186. During soaking maintain the water level in the mold and the soaking tank is approximately _____________ above the tope of the specimen.

Answer: 90Answer: 2.54 mm (0.10 in)Answer: 1.30mm/min.Answer: 25.40mm. (1.0 in.)

187. Soak specimen for ________________

188. The diameter of the penetration piston is ____________.

189. The temperature of the asphalt cement delivered to the mixer shall be required to achieve a kinetic viscosity in the range of

___________ is the viscosity used to grade asphalt cement.

191. The coarse aggregate used in asphalt mix is

Answer: 96 hours (4 days) Answer: 49.63+/-0.23 mmAnswer: 150 to 300 cu.m/s or 150 to 300 centitokes. Answer: 60*CAnswer: retained 2.36 mm (no.8 sieve)

192. The application temperature of emulsified asphalt range from _________.

193. When the tar is used for seal coats, It shall be heated to free flowing not to exceed ___________.

194. ___________________is used to determine the settlement characteristic of Soil Consolidation.

195. _______________ is used to determine the settlement characteristic of soil.

196. The weight of disturbed samples from hard auger or split spoon shall be at least ___________.

Answer: 10 71*CAnswer: 107* CAnswer: Unconfined and Tri-Axial Compression Test Answer: ConsolidationAnswer: 1.0 kg.

The undisturbed samples from Shellby Tube shall be at least_______.

198. ______________ determines the pile bearing capacity by loading one or more piles and measuring the settlement under load.

199. __________ determines the in site shear strength of soft to medium clay.

200. ___________ determine the soil bearing capacity by loading a steel plate usually 30 inches in diameter.

Answer: 18 long Answer: Vane Shear Test Answer: Plate Bearing Test Answer: Pile Load Test

201. ________________ is a laboratory which measures, examines, calibrate or otherwise determine the characteristics or performance materials or products.

202. Standard technical procedure to determine one or more specified characteristics of material product is called ______________.

A document which prevents the test result and other information relevant to test is called _____________.

204. is a document signed by the Director of BRS issued to Testing laboratory authorizing them to perform the required test in behalf of D PWH.

Answer: Testing Laboratory Answer: Test Method Answer: Test Report Answer: Certificate of Accreditation

204. The test have been developed to measure the loss of cohesion as a result of water action on the compacted bituminous mixture.

_______________ means porosity or perviousness of the mixture, a dense grade mix prevent water from entering the base through the surface.

206. __________________ is used in classifying liquid asphalt into grades. It is useful as a measure to control of consistency, particularly when run at the temperature of intended application.

207. ______________ determines the total bitumen content of a asphaltic materials, which is the actual cementing constituent of the asphalt.

208. _______________is an accelerated test to show the loss of volatiles when the sample is heated at 163*C for the five hours and the loss due to volatilization is determined.

Answer: Film Stripping & Immersion-Compression TestAnswer: Permeability Answer: Viscosity Test Answer: Solubility Test Answer: Loss on Heating

_________________ is the test that classifies the different asphalt and differ into grade.

For liquid asphaltic materials, this test is run on the residue after distillation.

This is one of the most important engineering properties . It is defined as its ability to resist sliding along internal surface within the mass .

212. This is an arbitrary measurement of consistency and is the basis of classification of all solid and semi-solid asphalt.

Answer: Consistency TestAnswer: Quality TestAnswer: Shearing Strength of SoilAnswer: Penetration Test of Asphalt

______________is a process to measure the consistency of liquid asphaltic materials to determine their fluidity or resistance to flow.

214. Plant mixed bituminous mixtures should be sampled in accordance to the Standard Method of Sampling Bituminous Mixture. A sample not less than ______ is taken and place in sample bag that would insure against contamination. This is taken every 75 cum. or 130 tons of mix.

215. The bearing blocks of the compression machine should be at least ______ greater than the diameter of the specimen.

216. The bottom bearing block shall be at least ___________thick when new bottom bearing block shall be at least _______ thick after any resurfacing operations.

217. The curing temperature of a specimen before testing is ___________

Answer: Viscosity testAnswer: 10 kg. Answer: 3.0 % Answer: 1.0 (22.50mm) , 0.9 Answer: 16-27*C.

218. The apparatus used to determine the flash point of asphaltic material is called _________________.

219. The asphalt samples for ductility and penetration test should be subjected to water bath at a temperature of 25* C for __________.

220. The concrete shall not be left exposed for more than ___________.

221. The rate of application of bituminous prime coat is ______.a. 1-2 L/sq. m.b. 0.2-0.7 L/sqm.c. 0.2-1.5 L/sqm.d. 0.5-2.0 L/sqm.

Answer: Cleveland Open ClubAnswer: 1 hoursAnswer: hour

In asphalting work, there are _____ phase of rolling.a. 2b. 3 c. 1d. 4

223. The _______ test determines the asphalt content in the bituminous mix.GradingBulk Specific GravityExtractionAbsorption

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

225. Liquid asphalt is also called ________.a. Cutback Asphaltb. Emulsionc. Blown Asphaltd. Asphalt Cement

The apparatus/equipment used in the liquid limit and plastic limit test is called _______.a. Sieves and chiselb. Attenberg Dev.c. Mortar and glass pestle

_____is a method of laboratory sampling.a. Mixingb. Using mechanical splitting/quarteringc. Proportioning

In laboratory compaction test/moisture density relation test, What is the specification of rammer?a. 5.5 lb.(2.5kg. ) in weight with 12 in. dropb. 8.0 lb. (3.6 kg.) in weight with 16 in. dropc. 10 lb. (4.5kg.) in weight with 20 in. Drop

What is the specification of mass percent passing in sieve 0.075 mm. No. 200 sieve grading A for aggregate base course.a. 20-14b. 0-12c. 0-6

The number of specimen in testing concrete hollow blocks is ______.a. 6 pcs./20,000 units (3 for absorption test and 3 for strength testb. 4 pcs./20,000 units )c. 8 pcs./20,000 units

Is it really necessary to cure concrete specimen?a. Yesb. Noc. None of the two

The kind of test that determines the consistency of concrete is ______.a. Slump Testb. Specific Gravityc. Abrasion Test

What is the dimension of concrete cylindrical sample?a. 6 dia. and 12 highb. 4 dia. and 8 highc. 8 dia. and 14 high

234. In the absence of concrete beam mold at the project site, are concrete cylindrical molds allowed by the specification to be used in sampler for Item 311-PCCP?a. Yes b. No

235. The minimum percent compaction for embankment is ______.a. 92.0 %b. 97.0 %c. 95.0 %

The minimum percent compaction for base of the road is _______.a. 100.00%b. 105.00 %c. 110.00%

The CBR value of aggregate base course is not less than _____.a. 80.0 %b. 85.0 %c. 90.0 %

The CBR value of aggregate subbase course is not less than ____.a. 25.0 %b. 30.0 % c. 35.0 %

The minimum compressive strength for Class A concrete is ______.a. 3,000 psi (20.7 MN/sqm.)b. 2,400 psi (16.7 MN/sqm.)c. 5,000 psi (37.7 MN/sqm.)

What is the significance of determination of the tensile properties of reinforcing steel bars?a. This method is intended to determine yield and tensile strength of the bar as well as its elongation and is used to classify the bars into gradeb. This method is intended to evaluate the ductile properties of the reinforcing steel barsc. None of the above

A tie bar should be ______.a. Deformed barb. Round barc. Flat bar

A dowel bar should be _____.a. Deformed barb. Round barc. Flat bar

243. The mortar for masonry shall consist of _______.a. One part of Portland Cement and 2 parts of sandb. One part of Cement and 3 parts of sandc. One part of Portland Cement and 4 part of sand

The apparatus used to measure the thickness or height of compacted bituminous paving mixture.a. Rulerb. Vernier Califer c. Steel Tape

It is used in calculating the unit weight of the mixture and the degree of compaction of the asphalt pavement.a. Bulk Specific Gravity of compacted bituminous mixtures using saturated surface dry specimen.b. Dry unit weight of compacted bituminous mixtures

The test which covers the quantitative determination of bitumen in hot mixed paving mixtures and pavement samples for specification service evaluation, control and research.a. Extractionb. Spot Testc. Flash Point

The solvent used in extraction of bitumen is ______.a. Diesel Oilb. Gasolinec. Water

The percent of bitumen content is computed based on ______.a. Mass of raw sampleb. Mass of dry aggregatesc. Mass of asphalt

The method used to determine the grading of aggregate extracted from bituminous mixture is _______.a. Mechanical analysis of extracted aggregatesb. Stability Testc. Viscosity Test

The drying temperature of sample is _______.a. 110 +/- 5* Cb. 100 * Cc. 100 +/-5 *C

_______ is a solid asphalt which is a basic constituent of all other asphalt called as hot asphalt or penetration grade asphalt.a. Asphalt Cementb. Cutback Asphaltc. Emulsified Asphalt

_______ is a kind of liquid asphalt which is a mixture of asphalt cement and kerosene.a. Medium Curing Cutbackb. Asphalt Cementc. Rapid Curing Cutback

_______ is a kind of liquid asphalt which is a mixture of asphalt cement and gasoline.a. Rapid Curing Cutbackb. Blown Asphaltc. Joint Filler

Asphalt is defined as ______.a. A petroleum productb. A dark brown to black cementitous materials whose consistency ranges from solid to semi-solid and whose main constituent is called bitumen is either found in nature or as a residue in petroleum refining.c. None of the above

It is a kind of liquid asphalt which is a mixture of asphalt cement and water with emulsified with pungent odor.a. Emulsified Asphaltb. Asphalt Cementc. Rapid Curing Asphalt

Joint Filler in concrete pavement is a _______.a. Blown Asphaltb. Hot Asphalt c. Liquid Asphalt

A device used to measure the relative hardness of asphalt is ____.a. Penetrometerb. Spectometer c. Vicat Apparatus

A property of asphalt cement to stretch without breaking is called ____.a. Ductilityb. Durabilityc. Tencile

An apparatus used to determine the specific gravity of asphalt is called ______.a. Metal Pycnometerb. Glass Pycnometerc. Any bottle

Consistency test for asphalt is called _______.a. Viscosityb. Slump Testc. Washing

A process of volatilization test which measures the relative proportion of asphalt to oil.a. Distillationb. Extractionc. Float Test

_____ is a period wherein the asphalt begins to melt.a. Softening Pointb. Fire Pointc. Boiling Point

The sampling requirement of asphalt is ______.a. 1 sample for every 200 drums or 40 metric tonsb. 1 sample for every 100 drumsc. 1 sample for every shipment

The component of bituminous mixes which range from 92 to 96 % is called ______.a. Bituminous Blended Aggregatesb. Concrete Aggregatesc. Sand

______ is a property of bituminous mixes in pavement to resist deformation or displacement due to impose load or repeated loading.a. Stabilityb. Flexibilityc. Ductility

_______ is a property of bituminous mixes in pavement to resist disintegration or deterioration due to the action of water, traffic and changing climate.a. Durabilityb. Flexibilityc. Ductility

______ is a property of bituminous mixes in pavement adjust itself to settlement.a. Flexibilityb. Rigidityc. Hardness

These are the factor affecting the workability of bituminous mixesa. Gradation of aggregate quality of asphalt and temperature of mix.b. Surface texture and temperature mix.c. Quantity of aggregate and asphalt content.

The percent index retention is computed in the formula ______.a. Wet Stability /Dry Stability x 100.b. Dry Stability/Wet Stability x 100.c. Wet Stability-Dry Stability x 100.

The sampling requirement of bituminous mixes is _____.a. 1 sample for every 75 cum.b. 1 sample for every 150 cum.c. 1 sample per delivery per day.

The application of liquid asphaltic material on a prepared untreated base is _________.a. Prime Coatingb. Seal Coatingc. Tack Coating

The application of liquid asphaltic material to an existing concrete surface is ________.a. Tack Coatingb. Seal Coatingc. Prime Coating

The application of asphaltic material and aggregate to an existing surface for the purpose of sealing it against the infiltration of water surface moisture is called _______.a. Seal Coatingb. Tack Coatingc. Prime Coating

274. The rate of application of prime coating using cutback asphalt is _______.a. 1-2 liters/sqm.b. 0.5-1.0 liter/sqm.C. 2.0-3.0 liters/sq.m.

275. The rate of application of tack coating using liquid or emulsified asphalt is _______.a. 0.2-0.7 li./sqm.b. 0.1-0.5 li./sqm.c. 2.0 li/sqm.The rate of application of seal coat using asphalt cement is ______.a. 0.9-1.8 li./sqm.b. 10-11 li.sqm.c. 8.0-9.0 li./sqm.

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

278. The primary quality control mechanism for the production of asphalt mixes with high degree of uniformity that will satisfy job requirement is ________.a. Job mix formulab. Quality control formula c. Assurance

The percent asphalt content in hot laid bituminous mixture range from________.5.0-8.0%4.0-6.0 %5.0-10.0 %

280. The placing of temperature for bituminous mixture measured in the truck prior to dumping is ________.a. at least 107*Cb. at least 120*Cc. at least 150*C

The second phase of rolling the spread bituminous mixture is called breakdown rolling which is the one responsible to attain the maximum density. The rolling is carried out by the use of ________.a. pneumatic rollerb. steel rollerc. sheepfoot roller

The significance of the final rolling is to remove the roller marks to previous rolling in order to have a good finish pavement with a temperature of 160*C.a. Trueb. Falsec. Maybe

283. The proper way of rolling should begin at ________ .a. The sides and proceeds longitudinally towards the road center each overlapping on half the roller witdth, gradually progressing the crown of road.b. The center and proceeding longitudinally towards the side of the roadc. Any part of the road provided each strip overlapping on half the roller width.

What is the minimum degree of compaction of asphalt pavement?a. not less than 92% of the density of the laboratory compacted specimenb. not less than 100% of the density of the laboratory compacted specimenc. not less than 85% of the density of the laboratory compacted specimen

285. What is the color of asphalt when it is overcook?a. yellowish brownb. black c. gray

________ determines the thickness and density of compacted pavement.a. Core Testb. X-rayc. FDT

287. The cored sample of asphalt pavement is measured at _______.a. approximately quarter pointsb. three pointsc. two points

Too much content in the bituminous mixes causes ________.a. bleedingb. Potholesc. cracks

The wearing away of the pavement surface caused by the disclodging of aggregate particle is called ___________.a. ravelingb. Alligator crackc. rutting

Interconnected cracks forming a series of small blocks resembling alligators skin or chicken wire is called _________.a. alligator crackingb. reflection crackingc. rutting

291. _______ is the type of cement to be used in the DPWH Portland Cement Type II.a. Portland Cement Type Ib. Pozzolan Cementc. Portland Cement II

292. If the fine aggregates are subjected to five cycles of sodium sulfate soudness test, the weighted loss shall not exceed _________.a. 10 mass percentb. 5 mass percentc. 3 mass percent

293. Specimen of coarse aggregates are subjected to five cycles of sodium sulfate soundness test, the weighted loss shall not exceed _______.a. 12 mass percentb. 15 mass percentc. 10 mass percent

294. The mass percent of wear of coarse aggregates for Item 311 when tested by AASHTO 96 is not greater than __________.a. 40 %b. 45 %c. 50 %

295. The design of concrete mix specified by the blue book is based on _______.a. Absolute Volume Methodb. Area Methodc. American Method

The minimum flexural strength requirement of beam sample when tested by the third point of loading method is __________.a. 3.5 Mpab. 3.8 Mpac. 4.0 Mpa

297. The minimum flexural strength requirement of beam sample when tested by midpoint method is ________.a. 4.5 Mpab. 3.5 Mpac. 5.0 Mpa

298. ________ are additives used in mixing concrete.a. Sodium chlorideb. Admixturec. Curing admix

_______ determines the consistency of concrete.a. Slump Testb. Consolidation testc. Viscosity

Equipment used in the consolidation of fresh concrete.a. Jackhammer Machineb. Vibratorc. Drilling

300. The prescribed forms to be used in concrete paving is called _______.a. steel formsb. wooden c. combination of steel and wood

The initial setting time of Portland Cement is not less than ________.a. 30 min.b. 60 min. c. 90 min. d. 45 min.

The standard sand used in testing the mortar strength of Portland Cement is called ________.a. Ottawa Sandb. Beach Sand c. River Sand

The apparatus used in determining the fineness of Portland Cement air permeability is _________.a. Blaine Air Permeability Apparatusb. Sieve No. 200c. Gilmore

A mixture of cement and water is called _______.a. Cement Pasteb. Mortar Pastec. Concrete Paste

The apparatus is used to determine the initial and final setting of cement in the laboratory is ________.a. Gilmore needleb. Balley needlec. Vicat apparatus

The compressive strength of cement mortar Type IP sample in seven days is not less than _______.a. 19.3 MN/sqm.b. 20 MN/sqm. (Type IP=19 MN/sqm.)c. 24 MN/sqm.

307. What is the appearance of the molded cement paste which fails to meet the autoclave expansion?a. crumbleb. Shinyc. changes color

The dimension of beam sample for paving concrete is ________.a. 6x6x 21b. 6x6x 24c. 4x 4x 21.8

The critical number of days of curing concrete is ________.a. first seven daysb. first 10 daysc. 28 days

The standard dimension of concrete cylindrical sample is ________.a. 6 dia. and 12 tallb. 6 dia and 6 tallc. 6 dia. and 8 tall

There are two layers in performing sampling of beam samples. How many number of blows are required per layer?a. 63 blowsb. 75 blowsc. 50 blows

There are three layers in performing sampling of concrete cylinder how many blows are required per layer?a. 25 blowsb. 30 blowsc. 35 blows

The formula which determines the proportion of the mix which can meet the desired strength requirement of concrete is called _______.a. Quality Control Programb. Program of Workc. Work Schedule

314. It is prescribed in each project based on estimated quantities and specifies the kind and number of test for each item of work.a. Minimum number of workb. Minimum Testing Requirementc. Work Schedule

Embankment materials delivered at the job site was about 12,000 cum. The minimum test requirement calls for 1-GPC, for every 1500 cum.a. 10-GPCb. 8- CPC c. 6-GPC

316. There is 1-Q cement required for every _______.a. 4,000 bags or fraction thereofb. 2,000 bags or fraction thereofc. 10, 000 bags

There is 1-QT RSB required for every ________.a. 20,000 kg. or fraction thereof b. 10,000 kg. or fraction thereofc. 15,000 kg. or fraction thereof

How may set of beam samples taken for every 75 cum. of concrete poured per day?a. one (1) setb. two (2) setc. three (3) set

In completed pavement, what is the minimum core samples required before payment is effected? (Assuming that the thickness is 23 cm.)a. Five holes per km. per laneb. One hole per 500 m.c. P. E. Certificate

In a barangay road, what is the minimum requirement for thickness determination of its completed pavement?a. Five holes per km. per laneb. P. E. Certificatec. One hole per 500 m.

A quality test is one of the minimum requirement for Item 200-aggregate subbase cours.a. Trueb. Falsec. Optional

There is no CBR test for Item 300-Aggregate Surface Coursea. Trueb. False

In Item 311 and 405, grading is perform _________.a. For every 75 cum.b. For every 300 cum.c. None

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 than 25 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 enoughc. Mill Certificate

The minimum test requirement for paint is __________.a. 1-sample for every 100 cans or fraction thereof.b. 1-sample for every 50 cans or fraction thereof.c. Mill Certificate

326.The minimum test requirement for water used in concrete for a questionable source is _______.a. P.E. Certificateb. 1-Quality Testc. Inspection Report

Based on the maximum dry density obtained by laboratory test the degree of compaction required for aggregate subbase should be at least _________.a. 99.0 %b. 98.0 %c. 100.0 %

Per our present Specification for Highways and Bridges including amendments, it is mandatory to open PCCP to traffic not later than _____.a. 7 days after pouringb. 14 days after pouring c. 21 days after pouringd. 28 days after pouring

In casting reinforced concrete railings, the concrete used is _______.a. Class Ab. Class A2c. Class C1d. Any of the preceding classes

For efficient compaction, the embankment materials at the time of rolling be _____.a. dryb. Wetc. at optimum moisture contentd. at maximum moisture content

For road base course the most preferable material is one with CBR _____.a. 60b. 50c. 30d. 80

Peat and muck are ________.a. fair subgrade spoilb. stable soilc. unstable soild. good subgrade soil

The slump test on concrete is measure _________.a. strengthb. unit weightc. consistencyd. Durability

The fineness modulus is highest of ________.a. fine sandb. very fine sandc. very coarse sandd. Durability

If concrete is continuously moist cured, it will gain strength beyond 180 days.a. Trueb. Falsec. It depends on curing temperature

Generally speaking, batching of concrete aggregates by volume is preferable than weight.a. Trueb. They are the samec. False

337. If angular coarse aggregate is used in concrete mix, it will require more _________.a. waterb. fine aggregatesc. water and fine aggregatesd. neither a and b

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