Materials Engineer Test Reviewer

Materials Engineer Test Reviewer

1. 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 % c) 0.5 %

b) 1.5 % d) 2.0 %

2. When cement is placed in contact with the aggregate, batches may be rejected unless mixed within _____ hours of such contact. a) 1.5 hours c) 0.5 hours b) 2.0 hours d) 2.5 hours

3. When mixed at the site or in a central mixing plant, the mixing time shall 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 seconds b) 50 seconds nor more than 90 seconds c) 60 seconds nor more than 120 seconds d) 90 seconds nor more than 120 seconds

4. 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 seconds c) 15 seconds b) 30 seconds d) 20 seconds

5. Concrete not place within ____ minutes from the time the ingredients were charged into the mixing drum shall be used.

a) 120 minutes c) 60 minutes b) 150 minutes d) 90 minutes6. 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) 30 minutes c) 45 minutes b) 15 minutes d) 60 minutes7. 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 % c) 5.4 %

b) 5.0 % d) 4.8%

8. The minimum penetration of the preservative with the surface of the timber piles shall be ____ a) 150 mm c) 250 mm b) 200 mm d) 100 mm

9. The contractor shall submit in writing a job-mix formula for the 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 week b) three weeks d) four weeks

10. 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* C c) 14* C to 24* C b) 15* C to 18* C d) 18* C to 28* C

11. This is used in soil stabilized road surface due to its high ____ property, that is, it absorb and retain water. a) Potassium Chloride

c) Magnesium Chloride

b) Calcium Chloride

d) Sodium Chloride

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

13. The uniform rate at which the movable head of the CBR machine travel is _____ . a) 0.05 in / min c) 0.08 in /min b) 0.10 in /min d) 0.09 in /min

14. Cast in place concrete shall not be post tensioned until at least ____ and until the compressive strength has reached the strength specified. a) 7 days c) 14 days b) 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 tons c) 50 tons b) 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 Stability b) Design mix d) Extraction

18. Vibration shall operate a frequency of 8,300 to 9,600 impulse per minute under load at a maximum spacing of ____ cm. a) 30 cm c) 60 cm b) 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 ____. a) 1.151 to 1.174 c) 1.051 to 1.154 b) 1.250 to 1.178 d) 1.058 to 1.184

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

21. 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 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 steam b) 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 Coat b) 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 hours26. Proper compaction of the fill materials is very important, as it will ______. a) Increase the shear strength b) Decrease permeability c) Minimize compressibility d) All of the above27. In which DPWH item is emulsified asphalt not suitable? a) Item 301 c) Item 304 b) Item302 d) Item 308

28. Unconfined compressive strength test is usually performed on ______. a) Sandy soils c) Organic soils b) Silty soils d) Clayey soils

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

30. 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 % c) 95 % b) 94 % d) 96 %

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

32. 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 strength b) 90% of specified strength & if no single core is less than 80% of specified strength c) 85% of specified strength & if no single core is less than 75% of specified strength

33. Before the cement is to be used, sampling must be done at least _____ before use. a) one week c) two weeks b) 14 days d) 12 days34. Asphalt cement shall not be used while it is foaming nor shall be heated at ____ at anytime after delivery. a) 107 C c) 120 C b) 159C35. Moisture content of aggregate in bit mix shall not exceed ____ of the time it is introduce into the mixing unit. 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 %

37. Between stage of curing, concrete shall not be exposed for more 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) Plaster b) Payment of the concrete will be made an adjustment c) Removed and replaced at the expensed of the contractor39. If the strength of control specimen does not meet the requirement and not feasible to obtain cores due to structural consideration, as a Materials Engineer what will be your decision? a) Removed and replaced b) Area will not be paid c) Payment will be made at an adjusted price40. After concrete has been placed, it is advisable to maintain fully welted and in position for how many hours? a) 14 hours c) 72 hours b) 24 hours d) 15 18 hours

41. Rock shall be excavated to a depth ____ below subgrade within the limit of the roadbed a) 100 mm c) 200 mm b) 150 mm

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

43. Piles shall not be driven within 7 meters of concrete less than _____ old.

a) 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 mm b) 150 mm

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

47. Minimum size of galvanized wire mesh is ____________.

a) 2.0 mm c) 2.7 mm b) 2.2 mm d) 3.4 mm

48. Minimum density of gabions is ___________.

a) 1,000 kg/cu. m c) 1,400 kg/cu. m b) 1,200 kg/cu. m d) 1,500 kg/cu. m

49. Soundness loss of field gabions is __________________.

a) 9 % after 5 cycles c) 11 % after 5 cycles b) 10 % after 5 cycles d) 12 % after 5 cycles

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

51. Submission of sample minimum quantity of material for asphalt 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 mm1. Used of bituminous cold mix for potholes patching during rainy/ wet period is acceptable a) false b) true54. In soil, all boring shall be carried to a depth of at least ____ below the proposed gradeline. a) 0.50 m c) 1.5 m b) 1.0 m d) 1.8 m

55. The test that determine pile bearing capacity by loading one or more pile and measuring settlement under load is _____. a) Vane shear test c) Pile load test

b) Plate bearing test

56. The weight of disturbed samples from hard auger or split spoon shall be at least ____. a) 1 kg c) 10 kg

b) 20 kg d) 100 kg

57. Submission of sample for testing for cement is _____.

a) 10 kg c) 15 kg

b) 20 kg d) 40 kg

58. The length of Shelby Tube of an undisturbed sample is _____. a) 10 long c) 20 long b) 18 long59. For small project where quantity of steel bars is 10,000 kg or less, what is the basis for acceptance of material? a) No testing c) Mill certificate b) P.E, certificate

60. ______ determine the best combination of the material that will produce a potentially stable & durable mixture. a) Job mix formula c) Design of bituminous mix b) Marshall formula

61. _______ is the rate of loading for concrete cylinder sample subject to compression test a) 20 - 40 psi/sec c) 15 40 psi/sec b) 20 - 50 psi/sec d) 15 40 psi/sec

62. In a soil exploration, if the characteristic of rock is questionable, the minimum depth of boring into the bedrock should be _______. a) 1.5 m c) 2.5 m b) 2.0 m d) 3.0 m

63. Determine soil bearing capacity by loading a steel plate usually 30 diameter. a) Vane shear test c) Pile load test b) Plate bearing test d) None of the above

64. How many hours does aggregate stockfile or binned for draining before being batch? a) 1 hour c) 12 hours

b) 6 hours d) 24 hours

65. 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? a) not less than 90 % c) not less than 95 % b) not less than 80 % d) not less than 98 %

66. What is the rate of loading for concrete beam tested for flexural stress? a) 110 150 psi/sec c) 125 175 psi/sec b) 115 150 psi/sec d) 130 - 175 psi/sec

67. In concrete sampling paste shall be of normal consistency of _____ when the rod settles to a point below the original surface in 30 secs. a) 10 +/- 1 mm c) 15 +/- 1mm b) 11 +/- 1 mm d) 20 +/- 1 mm

68. What the temperature of a concrete sample? a) 10 15 * C c) 15 18* C b) 18 24 * C69. What is the wash loss of fine aggregates in the no. 200 sieve? a) 1 % c) 3 % b) 2 % d) 4 %

70. Retarder can delay the setting time of concrete up to how many hours? a) 1 hour c) 4 hours b) 2 hours d) 8 hours

71. Super plasticizer can increase the strength of concrete up to how many percent? a) 40 60 % c) 50 70 % b) 50 60 % d) 60 70 %

72. ___________ is the moisture in an air dried soil a) Moisture Content b) Natural Moisture Content c) Hygroscopic Moisture Content d) Hydrometer Moisture Content

73. _________ is the tolerance of mix in bituminous. a) 10* C c) 15* C---------- b) 12* C d) 18* C

74. _________ Number of measurement taken in a core sample for thickness determination of the finish asphalt pavement a) 3 c) 5 b) 4 d) 8

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

76. Prime coat shall be left undisturbed for at least _____. a) 6 hours c) 24 hours b) 12 hours

77. 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* F b) 190 199* F d)150 185* F

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

79. What is the plasticity index of mineral filler? a) not greater than 4 c) not greater than 8 b) not greater than 6 d) zero80. 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/lane b) for every 150 l.m/lane d) for every 1,000 l.m/lane

81. ________ is the slump of workable concrete if vibrated. a) 10 20 mm c) 40 50 mm b) 10 40 mm d) 40 75 mm

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

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

84. ______ is a process of breaking down of rocks into small pieces of various size that can range from large boulders to very small clay particles. a) Consolidation c) Weathering b) Unconsolidation

85. ________ is the limit were further loss of water due to evaporation which will not result in reduction of volume. a) Plastic limit c) Shrinkage limit b) Liquid limit

86. ________ 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 materials87. ________ a classification of soil which 35% or more of the particles pass through no. 200 sieve a) Course Sand Soil c) Silty-Clay Materials b) Granular Materials d) Clayey Materials88. It evaluate the quality of soil as highway subgrade material. a) Atterberg Limit c) Group Index b) Plasticity Index d) Liquid Limit

89. When soil has plasticity index value of 10, what is the criteria of the material?

a) Coarse grain c) Clayey b) Sandy d) Silty90. When plasticity index is equal a) Coarse grain c) Clayey b) Sandy d) Silty

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

92. It indicates good subbase materials when G.I. is equal to _____. a) 0 c) 10 b) 5 d) 20

93. It indicates very poor subbase materials when G.I. is equal to _____. a) 0 c) 10 b) 5 d) 2094. ______ indicates the composition of soil. a) Atterberg Limit b) Plasticity Index

95. The higher the value of PI of the soil, the weaker will be the soil performance as a _____. a) True c) Depend b) False d) None of the above

96. _______ the Plasticity Index of group of soil

a) 0 c) 10 b) 6 d) 11

97. _______ is the minimum percent of A-6 group classification of soil.

a) 0 % c) 35 %

b) 25 % d) 36 %

98. _______ is the maximum of G.I. of Silty Clay Materials

a) 0 c) 20

b) 25 d) 35

99. When the value of G.I. is negative, what will be the soil performance?

a) Poor Subgrade c) Good subgrade

b) Very good subgrade d) None of the above

100. The weight of Sandy soil for Hydrometer Analysis is ______.

a) 10 grams c) 50 grams

b) 25 grams d) 100 grams

101. The weight of Clayey or Silty soil for Hydrometer Analysis is ______.

a) 10 grams c) 50 grams

b) 25 grams d) 100 grams

102. A 25 grams fine grained soil can be dried in about ______.

a) 1 hour c) 3 hours

b) 2 hours d) 4 hours

103. A 25 grams sandy soil can be dried in about ______.

a) 1 hour c) 3 hours

b) 2 hours d) 4 hours

104. ________ is a type of soil in which most of the soil grains are of the same size.

a) Poorly graded c) Gap graded

b) Well graded d) Non of the above

105. The soil grained are force apart by the water added, thus the grain is reduced, what is the method used? a) Lubrication c) Swelling

b) Welting d) Saturation

106. Percent passing loose for coarse aggregates when tested for clay lump is _____.

a) 0.1 mass percent c) 0.8 mass percent

b) 0.25 mass percent d) 1.0 mass percent

107. The mass percent passing loose for coarse aggregates when tested in soft fragment is ____.

a) 0.10 c) 3.5

b) 0.25 d) 1.00

108. If slag is used, the density of coarse aggregate is ______.

a) 30 100 kg/cu. m c) 1,120 kg/cu. m

b) 150 kg /cu. m d) 1,400 kg/cu. m

109. Mass percent loose for fine aggregates when tested in Clay lumps is _____.

a) 0.10 c) 0.80

b) 0.25 d) 1.0

110. _________ is a type of cement which shall be transferred to an elevated, air tight and weather proof bins storage. a) Portland Cement c) Bulk Cement

b) Pozzolan Cemenr d) None of the above

111. Scales for weighing aggregates and cement shall be accurate within _____.

a) 0.1% c) 0.5%

b) 0.25% d) 1.9%

112. The minimum thickness of conventional concrete as the surface course in monolithic pavement is _____. a) 50 mm c) 100 mm

b) 75 mm d) 150 mm

113. _____________ determines the resistance of the emulsion to break when mixed with mineral aggregate. a) Viscosity Test c) Spot test

b) Distillation Test d) Cement Mixing114. _____________ is an instrument used for rapid in site measurement of the structural properties of existing road pavement.

a) Pundit Ultra Sonic Concrete Tester

b) Dynamic Core Penetrometer

c) Falling Weight Deflectometer

d) Core Test

115. How many days does the emulsified asphalt must be tested after delivery at temperature 40*F(4.5*C). a) 10 days c) 14 days

b) 12 days d) 16 days

116. 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%

117. ___________ determines the effect of water on the cohesion of the mixture

a) Stability Test c) Distillation

b) Solubility d) Immersion-Comprssion Test118. The distance of the sample by grooving before rotating the brass cup is _____.

a) c)

b) d) 1

119. The most common method of assessing strength and stiffness of both subgrade and pavement is _______. a) FDT c) SPT

b) CBR d)Non of the above

120. How many days do the specimen for CBR soaked?

a) 1 day c) 3 days

b) 2 days d) 4 days121. When mixed at the site or a in central mixing plant, the mixing time shall not be less than _50_seconds nor more than _90_ seconds unless mixer performance test prove adequate mixing of the concrete in a shorter time period.

122. 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 _15_ seconds of the mixing period

123. 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.

124. 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_ minutes after the initial mixing operation and the water and cement ratio is not exceeded

125. Concrete not placed within _90_ minutes from the time the ingredients were charge into the mixing drum should not be use.

126. The completed pavement shall be accepted on a lot basis. A lot shall be considered as _500_ linear meter double lane

127. Each lot shall be divided into _5_ equal segment and one core will be obtained from each segment in accordance with AASHTO T24.

128. 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_.

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

130. The penetrator test is an indication of the _Consistancy_ of the asphalt

131. _Marshall Stability Test_ is the most common used method in the design and evaluation of bituminous concrete mixes

132. _Extraction Test_ determines the asphalt content in the bituminous mixes.

133. Cast in place concrete shall not be post-tensioned until at least _10_ days and until the compressive strength has reached the strength specified

134. This is the 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. Answere: Bulk Specific Gravity

135. _Apparent Specific Gravity_ 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.

136. Weight of sandy soil needed for Hydrometer test is _100 grams_137. Weight of silty or clayey soil needed for Hydrometer test is _50 grams_138. These are widely used to control the characteristics of soil which are to be incorporated in roadway. Ans. Liquid and Plastic Limits

139. This is defined as the highest moisture content of which the mass attains its minimum volume but continues to lose weight /mass. Ans. Shrinkage Limit140. _Le Chattelier Flask___ is an apparatus used in determination of specific gravity of Hydraulic Cement.

141. _Autoclave Machine_ is an equipment used in determination of soundness of Portland Cement

142. Asphalt shall be homogeneous, free from water, and shall not foam when heated to _175* C(347* F)_

143. _Cement Mixing Test of Asphalt_ indicate the rate at which the asphalt emulsion will break when mix with aggregate .

144. The lost in weight of rock used in gabions when tested to sodium sulfate, soundness loss shall not exceeds__9%__

145. Gabions dimentions are subject to a tolerance limit of _+/- 3%_146. The pour point of concrete joint sealer shall be at least 11*C (20*F) lower than the safe heating temperature, which is the maximum temperature to which the material may be heated without exceeding the permitted flow.

147. The penetration of concrete joint sealer, Hot Poured Elastic Type shall not exceed_90_148. The CBR is generally selected at _2.54 mm (0.10 in)_ penetration.

149. If the ratio at 5.08 mm (0.21 in ) penetration is greater, the should be _Rerun_150. If the check test gives a similar result, the ratio at 5.08 mm penetration shall be__adopted or used__151. The penetration piston of CBR machine should have a uniform penetration at a rate of 1.30 mm/min152. During soaking maintain the water level in the mold and the soaking tank is approximately __25.40 mm ( 1.0 in )__ above the top of the specimen

153. Soak the specimen for _96 hours ( 4days )__154. The diameter of penetration piston is ____ . Ans. 49.63 +/- 0.23 mm ( 1935 cu m )155. The temperature of the asphalt cement delivered to the mixer shall be as required to achieve a kinetic viscosity in the range of ______. Ans. 150 to 300 cu m/s or 150 to 300 centistokes156. ______ is the viscosity used to grade asphalt cement . Ans. 149 F ( 60 C )157. The coarse aggregate used in asphalt mix is ____ . Ans. Retained by 2.36mm (no 8 sieve)

158. The application temperature of emulsified asphalt range from ____. Ans. 10-71C

159. When the tar is used for seal coats, it shall be heated to free flowing but not to exceed ___________. Ans. 149 C160. _______ is used to determine the soil strength parameter. Ans. Unconfined and Tri-Axial Compression Test

161. ________ is used to determine the settlement characteristic of soil. Ans. Consolidation

162. The weight of disturbed samples from hard auger or split spoon shall be at least__________ Ans. 1.0 kg163. The undisturbed samples from Shellby Tube shall be at least______. Ans.18 long164. _______ determines the pile bearing capacity by loading one or more piles and measuring settlement under load. Ans. Pile Load Test165. ________ determines the in-site shear strength of soft to medium clay. Ans. Vane Shear Test

166. _______ determine the soil bearing capacity by loading a steel plate usually 30 inches in diameter. Ans. Plate Bearing Test

167. Laboratory which measures, examines, calibrate or otherwise determine the characteristic or performance materials or products. Ans. Testing Laboratory168. Standard technical procedure to determine one or more specified characteristic of material product is called___. Ans. Test Method169. A document which prevents the test results and other information relevant to test is called _____ Ans. Test Report

170. __________ is a document signed by the Director of BRS issued to Testing laboratory authorizing them to perform the required test in behalf of DPWH. Ans. Certificate of Accreditation

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

172. This mean porosity or perviousness of the mixture, a dense grade mix prevent water from entering the base through the surface. Ans. Permeability

173. This 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 Ans. Viscosity Test174. This test determines the total bitumen content of a asphaltic materials, which is the actual cementing constituent of the asphalt. Ans.. Solubility Test

175. This is an accelerated test to show the loss of volatiles when the sample is heated at 163*C for five hours and the loss due to volatilization is determined. Ans Loss on Heating176. This test classifies the different asphalt into types and the different types into grade. Ans.. Consistency Test177. For liquid asphaltic materials, this test is run on the residue after distillation.. Ans.. Quality Test178. This is one of the most important engineering properties of soil. It is defined as its ability to resist sliding along internal surface within the mass.. Ans.. Shearing Strength of Soil179. This is an arbitrary measurement of consistency and is the basis of classification of all solid and semi-solid asphalt. Ans.. Penetration Test of Asphalt180. This is a process tomeasure the consistency of liquid asphaltic materials to determine their fluidity or resistance to flow. Ans.. Viscosity Test181. _________ was developed in order to differentiate bituminous materials with respect to hardening characteristic. Ans.. Thin Film Oven Test182. Plant-mixed bituminous mixtures should be sampled in accordance with the Standard Method of Sampling Bituminous Mixture. A sample not less than ______ kg is taken and place in sample bag that would insure against contamination. This is taken every 75 cu m or 130 tons of mix. Ans.. 10 kgs183. The bearing blocks of the compression machine should be at least _____ greater than the diameter of the specimen. Ans.. 3.0 %184. The bottom bearing block shall be at least _____ thick when new

Ans. 1.0 ( 22.50 mm )185. The bottom bearing block shall be at least _______ thick after any resurfacing operations..

Ans. 0.9 ( 22.50 mm )186. The curing temperature of a specimen before testing is ______.

Ans. 18 C to 24 C187. The apparatus used to determine the flash point of asphaltic material is called ____

Ans. Cleveland Open Cup

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

Ans.. 11/2 hours189. The concrete shall not be left exposed for more than ____ hour between stages of curing or during the curing period. Ans.. hour190. The rate of application of bituminous prime coat is ____.

a) 1-2L/sq. m. c) 0.2-1.5L/sq. m.

b) 0.2-0.7L/sq. m. d) 0.5-2L/sq. m.

191. Another name for asphalt joint filler is_______.

a) asphalt cement c) blown asphalt

b) rock asphalt d) cutback asphalt

192. In asphalting work, there are _______ phase of rolling

a) 2 c)1

b) 3 d) 4

193. The _____ test determines the asphalt content in the bituminous mix.

a) Grading c) Extraction

b) Bulk Specific Gravity d) Absorption

194. 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

195. Liquid asphalt is also called ___________.

a) Cutback asphalt c) Blown asphalt

b) Emulsion d) Asphalt cement

196. The different test for soil classification are:

a) compaction and FDT

b) Hydrometer test and moisture content

c) Grading, LL and PL test197. The apparatus/equipment used in the liquid limit and plastic limit test is called___ .

a) sieves and chisel c) mortar and pestle

b) Atterberg Device and glass plate

198. _________ is a method of laboratory sampling.

a) Mixing c) Proportioning

b) Using mechanical splitter/quartering199. In laboratory compaction test/moisture density relation test, what is the specification of rammer? a) 5.5 lb. (2.5 kg) with 12 in drop c) 10 lb. (4.5 kg) in weight with 18 in drop

b) 8 lb. (3.6 kg) in weight with 16 in drop

200. 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 6

b) 0 12201. The number of specimen samples in testing concrete hollow block is _____.

a) 6 pcs./20,000 units (3 for absorption test and 3 for strength test )

b) 4 pcs./20,000 units

c) 8 pcs./20,000 units

202. Is it really necessary to cure concrete specimen?

a) Yes c) No

b) None of the two

203. The kind of test that determines the consistency of concrete is _____.

a) Slump test c) Abrasion test

b) Specific Gravity

204. 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 high

205. 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) may be c) No

206. The minimum percent compaction for embankment is _______.

a) 92% b) 95% c) 97%

207. The minimum percent compaction for base of the road is ______.

a) 100% b)110% c) 105%

208. The CBR value of aggregate base course is not less than ____.

a) 80% b) 90% c) 85%

209. The CBR value of aggregate subbase course is not less than ____.

a) 25% b)35% c) 30%

210. 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. )

211. What is the significance of determination of the tensile properties of reinforcing steel bars?

a) This method is intended to determine the yield and tensile strength of the bar as well as its elongation, and is used to classify the bars into grade

b) This method is intended to evaluate the ductile properties of the reinforcing bars

c) None of the above

212. A tie bar should be ______

a) deformed bar b) round bar c) flat bar

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

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

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

216. 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

c) Mass of specimen in water

217. The test which covers the quantitative determination of bitumen in hot- mixed paving mixtures and pavement samples for specification acceptance, service evaluation, control and research.

a) Extraction b) Spot Test Flash Point

218. The solvent used in extraction of bitumen is _____.

a) Diesel oil b) Gasoline c) Water

219. The percent of bitumen content is computed based on ______.

a) mass of raw sample b) mass of dry aggregate c)mass of asphalt

220. The method used to determine the grading of aggregate extracted from bituminous mixture is ____. a) Mechanical analysis of extracted aggregate

b) Stability Test

c) Viscosity

221. The drying temperature of sample is ________

a) 110 +/- 5*C b) 100 +/- 5*C c)100*C

222. _______ 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 Asphalt c) Cutback Asphalt

223. ________ is a kind of liquid asphalt which is a mixture of asphalt cement and kerosene.

a) Medium Curing Cutback b) Asphalt Cement

c) Rapid Curing Cutback 224. ________ is a kind of liquid asphalt which is a mixture of asphalt cement and oil.

a) Slow Curing Cutback b) Emulsified Asphalt c) Blown Asphalt

225. ________ is a kind of liquid asphalt which is a mixture of asphalt cement and gasoline

a) rapid Curing Cutback

b) Blown Asphalt

c) Joint Filler

226. Asphalt is defined as _________.

a) A petroleum product

b) A dark brown to black cementitious materials whose consistency range s from solid to semi-solid and whose main constituent is called bitumen which is either found in nature or as a residue in petroleum refining. c) None of the above

227. It is a kind of liquid asphalt which is a mixture of asphalt cement and water with emulsified with pungent odor. a) Emulsified Asphalt b) Asphalt Cement c) Rapid Curing Asphalt

228. Joint filler in concrete pavement is a __________.

a) Blown Asphalt b) Hot asphalt c) Liquid asphalt

229. A device used to measure the relative hardness of asphalt is __________.

a) Penetrometer b) Spectometer c) Vicat Apparatus

230. A property of asphalt cement to stretch without breaking is called________.

a) Ductility b) Durability c)Tensile

231. It is a point where the volatile components of asphalt will evaporate.

a) Fire Point b) Flash Point c) Center Point

232. It determines whether asphalt is over heated or not during the process of manufacture.

a) Spot Test b) Boil Test c) Extraction Test

233. An apparatus used to determine the specific gravity of asphalt is called ______.

a) Metal Pycnometer b) Glass Pycnometer c) any bottle

234. Consistency test for asphalt is called___________.

a) Viscosity b) Slump test c) Loss in ting

235. A process of volatilization test which measures the relative proportion of asphalt to oil.

a) Distillation b) Extraction c)Float Test

236. It is a period wherein the asphalt begins to melt.

a) Softening Point b)Boiling Point c)Fire Point

237. The sampling requirement of asphalt is _____ .

a) 1 sample for every 200 drums or 40 metric tons

b) 1 sample for every 100 drums

c) 1 sample for every shipment

238. The component of bituminous mixes which range from 92 to 96% is called __________.

a) Bituminous Blended Aggregate b) Concrete Aggregate c) Sand

239. ____________ is a property of bituminous mixes in pavement to resist deformation or displacement due to impose load or repeated loading.

a) Stability b)Flexibility c)Tensile

240. ____________ is a property of bituminous mixes in pavement to resist disintegration or deterioration due to the action of water, traffic and changing climate

a) Durability b) Flexibility c)Ductility

241. ____________ is a property of bituminous mixes in pavement adjust itself to settlement

a) Flexibility b) Rigidity c) Hardness

242. These are the factor affecting the workability of bituminous mixes

a) Gradation of aggregate, quality of asphalt, and temperature of mix

b) Surface texture and temperature mix

c) Quantity of aggregates and asphalt content

243. The dry molded asphalt sample in the immersion compression test is submerged in water for ____. a) 4 days b) 4 hours c) 2 days

244. 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/Dry Stability x 100

245. 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

246. The application of liquid asphaltic material on a prepared untreated base is _____.

a) Prime Coating b) Seal Coating c) Tack Coating

247. The application of liquid asphaltic material to an existing surface is ____ .

a) Tack Coating c) Prime Coating b) Seal Coating

248. The application of asphaltic material and aggregate to an existing surface for the purpose of sealing it against the infiltration of water or surface moisture is called ____

a) Seal Coating b) Tack Coating c) Prime Coating

249. 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. m

250. The rate of application of tack coating using liquid or emulsified asphalt is __________.

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

251. The rate of application of seal coat using asphalt cement is ________.

a) 0.9-1.8 li/sq. m b) 10-11 li/sq. m c) 8-9 li/sq. m

252. 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

253. The primary quality control mechanism for the production of asphalt lies with high degree of uniformity that will satisfy job requirement is ________________.

a) Job mix formula b) Quality control formula c) Assurance

254. The objective of designing the asphalt mixture is determination of ______.

a) Type and grade of asphalt, proportion of coarse, fine and mineral filler, if used and asphalt content. b) To produce a desirable characteristic of pavement which are stable, durable, flexible and skid resistance. C) All of the above

255. The percent asphalt content in hot laid bituminous mixture range from ______

a) 5-8% b) 4-6% c) 5-10%256. The placing temperature for bituminous mixture measured in the truck prior to dumping is ______. a) at least 107*C b) at least 120 C c) at least 150*C

257. The second phase of rolling the spread bituminous mixture is called breakdown rolling which is the one responsible to attain the maximum density. This rolling is carried out by the use of ______. a) pneumatic roller b) steel roller c) sheepfoot roller

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

a) True b) False c) Maybe

259. The proper way of rolling should begin at _____________________.

a) the sides and proceeds longitudinally towards the roads center, each strip overlapping on half the roller width, gradually progressing the crown of the road

b) the center and proceeding longitudinally toward the side of the road

c) any part of the road provided each strip overlapping on half the roller width260. What is the minimum degree of compaction of asphalt pavement?

a) not less than 97% of the density of the laboratory compacted specimen

b) not less than 100% of the density of the laboratory compacted specimen

c) not less than 85% of the density of the laboratory compacted specimen

261. What is the color of asphalt when it is overcook?

a) yellowish brown b) black c)gray

262. _____________ determines the thickness and density of compacted asphalt pavement.

a) Core test b) FDT c) X-ray

263. The cored sample of asphalt pavement is measured at ______________.

a) approximately quarter points b) three points c) two points

264. Too much asphalt content in the bituminous mixes causes ____________ .

a) bleeding b) potholes c) cracks

265. The wearing away of the pavement surface caused by the dislodging of aggregate particle is called ______________. a) raveling b) alligator crack c) rutting

266. Interconnected cracks forming a series of small blocks resembling an alligators skin or chicken wire is called ____________.

a) alligator cracking b) reflection cracking c) bleeding

267. __________ is the type of cement to be used in the DPWH infrastructure project as indicated in the Blue Book. a) Portland Cement Type I b) Pozzolan Cement Portland Cement Type II

268. If the fine aggregates are subjected to five cycles of sodium sulfate soundness test, the weighted loss shall not exceed ___________

a) 10 mass percent b) 5 mass percent c) 3 mass percent

269. If the coarse aggregate are subjected to five cycles of sodium sulfate soundness test, the weighted loss shall not exceed____________.

a) 12 mass percent b) 15 mass percent 10 mass percent

270. 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%

271. The design of concrete mix specified by the blue book is based on ________________.

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

272. 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

273. 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

274. ____________ are additives used in mixing concrete.

a) sodium chloride b) admixtures c) curing agent

275. ____________ determines the consistency of concrete.

a) Slump Test b) consolidation test c) viscosity

276. Equipment used in the consolidation of fresh concrete.

a) jack hammer b) vibrator c) drilling machine

277. The prescribed forms to be used in concrete paving is called ____________

a) steel forms b) wooden c) combination of steel and wood

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

a) 30 min. b) 60 min. c) 90 min.

279. The final setting time of Portland cement Type I is _____________.

a) 10 hrs. b) 24 hrs. c) 36 hrs.

280. The standard sand used in testing the mortar strength of Portland cement is called __________.

a) Ottawa Sand b) Beach Sand c) River Sand

281. The apparatus used in determining the fineness of Portland cement by air permeability is __________ . a) Blaine Air Permeability Apparatus

b) Sieve No. 200

c) Gillmore

282. A mixture of cement and water is called ____________.

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

283. The apparatus used to determine the initial and final setting of cement in the laboratory is _________. a) Gillmore needles b) Bailey needle c) Vicat apparatus

284. The compressive strength of cement mortar sample in seven days is not less than _________.

a) 19.3 MN/sq. m b) 20 MN/sq. m c) 24 MN/sq. m

285. What is the appearance of the molded cement paste which fails to meet the autoclave expansion.______________. a) crumble b) shiny c) changes color

286. 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

287. The critical number of days of curing concrete is ____________.

a) first seven days b) first 10 days c) 28 days

288. The standard dimension of concrete cylindrical sample is ___________.

a) 6 dia. and 12 tall b) 6 dia. and 6 tall c) 6 dia. and 8 tall

289. There are two layers in performing sampling of beam samples. How many number of blows are required per layer? a) 63 blows b) 75 blows c) 50 blows290. There are three layers in performing sampling of concrete cylinder. How many blows are required per layer? a) 25 blows b) 30 blows c) 35 blows

291. The formula which determines the proportion of the mix which can meet the desired strength requirement of concrete is called____________.

a) design of concrete mix b) Boyles Formula c) Bernoulis Formula

292. The minimum testing requirement for every project is indicated in a duly approved________.

a) Quality Control Program

b) Program of Work

c) Work Schedule

293. It is prescribed in each project based on estimated quantities and specifies the kind a