Asphalt Technology 5el1a

ASPHALT TECHNOLOGY 1. Determine the specific gravity of the asphalt cement Mass of pycnometer = 50 g Mass of pycnometer filled w/ water = 60 g Mass of pycnometer w/ sample = 55 g Mass of pycnometer + sample + water = 62 g a. 1.55 c. 2.30 b. 1.67 d. 2.50 2. Determine the loss on heating of asphalt sample. Mass of container = 13 g Mass of container + sample = 58 g Mass of container + sample after heating = 57 g a. 2.01 c. 3.34 b. 2.22 d. 3.14 3. Asphalting of a two-lane pavement, 500m (for every 50 meters) road lasted for three days. How many core samples should be taken from the pavement if no sample was taken at the end of each day’s operation? a. 3 c. 6 b. 5 d. 10 4. Which of the following provisions is not included in the job mix formula? a. Mixing time c. Asphalt cement b. Grading aggregates d. Temperature at delivery 5. 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/cm3. The quantity of bituminous mix to be paid, in tones, is: a. 65.5 c. 655 b. 67.5 d. 675 6. The dividing size between coarse and fine aggregates used in asphalting: a. No. 4 c. No. 16 b. No. 8 d. None of the above 7. The most commonly used method in the design and evaluation of bituminous concrete mixes: a. Marshall Stability method c. All of the above b. Plant mix method d. None of the above 8. The separation of the pavement due to natural causes, traffic action, or reflections from an underlying pavement: a. Construction t c. Bleeding b. Crack d. Disintegration 9. The bowl-shaped holes of varying sizes in the pavement, resulting from localized disintegration: a. Potholes c. Raveling b. Cracks d. Shoving

10. A crack in asphalt overlays that reflects the crack pattern in the pavement structure under math: a. Reflective cracks c. Hairline cracks b. Traverse cracks d. None of the above 11. A crack, sometimes, crescent shaped, that point in the direction of the trust of the wheels on the pavement surface, caused by lack of bond between the pavement layers: a. Slippage cracks c. Longitudinal cracks b. Reflective cracks d. Disintegration 12. Any condition that might contribute to making a pavement slippery: a. Skid resistance c. Skid risk b. Skid hazard d. None of the above 13. What property of mix that has the ability to resist deformation from an imposed load? a. Sustainability c. Stability b. Fatigue resistance d. Flexibility 14. What property of mix that has the ability to withstand repeated flexing caused by the age of wheel load? a. Creep resistance c. Stability b. Fatigue resistance d. Flexibility 15. A number of measurements for asphalt core specimen: a. 2 c. 6 b. 4 d. 9 16. A test that covers the quantitative determination of bitumen in hot mixed paving mixtures and pavement samples for specification acceptance, service evaluation, control and research. a. Extraction test c. Hot-mixed temperature test b. Spot test d. Distillation test 17. What do you call the localized upward displacement of a pavement due to selling of the sub-grade or some portion of the pavement structure? a. Pumping c. Upheaval b. Raveling d. Cracks 19. A form of plastic movement typified by ripples. a. Corrugation c. Shoving b. Raveling d. Cracks 20. A form of plastic movement resulting in localized bulging of the pavement a. Corrugation c. Shoving b. Raveling d. Cracks 21. Longitudinal surface depression in the wheel paths a. Corrugation c. Raveling b. Rutting d. Rutting

ASPHALT TECHNOLOGY 22. The upward movement in an asphalt pavement resulting in the formation of film of asphalt in the surface. a. Shoving c. Cutting b. Bleeding d. rutting

33. Which of the following penetration grade of asphalt is used in cold climate? a. 120/150 c. 60/70 b. 85/100 d. 40/50

23. Are mixtures of asphalt cement and water with emulsifying agent. a. Petroleum c. Liquid Asphalt b. Asphalt Emulsion d. Cutback Asphalt

34. The job-mix formula contains the following provisions except a. Grading of aggregates b. Temperature of aggregates and asphalt c. Index of retained strength value d. Type of asphalt percentage

24. Emulsified asphalt which works better with wet aggregates. a. Anionic Emulsion c. Tar b. Cationic Emulsion d. Rapid Curing Asphalt 25. Minimum temperature of tar when it is used in the bituminous mixture. *66-107° a. 70°-107° c. 50°-107° b. 60°-107° d. 80°-107° 26. The bituminous material commonly used in the Item 310. a. Emulsified asphalt c. Tar b. Asphalt Cement d. Cutback Asphalt 27. The Item consists of preparing and testing an aggregate base course preparatory to the construction of the bituminous surface course. a. Bituminous Seal Coat c. Bituminous Tack Coat b. Bituminous Prime Coat d. Bituminous t Filler 28. This Item consists of preparing and treating an existing bituminous or cement concrete pavement surface with bituminous material. a. Bituminous Seal Coat c. Bituminous Tack Coat b. Bituminous Prime Coat d. Bituminous t Filler 29. This Item consists of application of bituminous material with or without application of aggregate on existing bituminous surface course. a. Bituminous Seal Coat c. Bituminous Tack Coat b. Bituminous Prime Coat d. Bituminous t Filler 30. What is the minimum amount of sample in testing asphalt mix? a. 10 kg c. 50 kg b. 20 kg d. 100 kg 31. Immersion-Compression test is used to determine ___ of asphalt mix. a. Ductility c. Stability b. Solubility d. Flexibility 32. A bituminous mix subjected to immersion-compression test yielded a dry stability of 2.0 kg & wet stability of 1.5 kg. The index of retained strength of the mix is: a. 0.5 c. 33 b. 1.33 d. 0.75

35. The objective of deg the asphalt mixture is determination of: a. Index of retained strength b. Penetration grade of asphalt c. Temperature of mix d. Production control 36. Given : Specific Gravity = 2.305 Wet compressive strength = 1,060 kPa Dry compressive strength = 1.400 Kpa What is the index of retained strength value? a. 70.1% c. 40% b. 71.4% d. 140% 37. The variation of tolerance of the surface from the testing edge of the straight edge in with the surface of asphalt pavement is: a. ± 2 mm c. ± 6 mm b. ± 4 mm d. – 5 mm 38. 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 price d. None of the above 39. Asphalt cement shall not be used while it is foaming nor shall be heated at ___ any time after delivery. a. 107°C c. 159°C b. 120°C d. 60°C 40. In concrete acceptance, core will be considered adequate if the average strength of the cores is equal to what? a. 80% of f’c & if no single core is less than 75% of specified f’c b. 90% of f’c & if no single core is less than 80% of specified f’c c. 85% of f’c & if no single core is less than 75% of f’c d. 100% of f’c & if no single core is less than 85% of specified f’c

ASPHALT TECHNOLOGY 41. The contractor shall submit in writing a job-mix formula for the mixture ed 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. Three weeks b. One week d. Four weeks

51. Test results from specimen taken from a recently rolled asphalt pavement showed that its total asphalt content is 5.45% by weight of mix. If the asphalt absorbed by the aggregate is 0.95%, the effective asphalt content by weight of mix is: a. 4.81% c. 5.10% b. 4.55% d. 5.50%

42. In which DPWH item is emulsified asphalt not suitable? a. Item 301 c. Item 302 b. Item 304 d. Item 308

52. When a completed asphalt pavement exhibits too much voids, it is usually caused by the following except of: a. Rolling the mixture below the temperature requirements b. Too much coarse aggregates c. Too little binder d. Too much fine aggregates

43. ___ is applied on existing bituminous or cement concrete surface with bituminous materials. a. Bituminous Prime Coat c. Bituminous tack Coat b. Bituminous Seal Coat d. Bituminous Surface Treatment 44. ___ is an indication that the asphalt mix is overheated. a. Blue smoke c. Stiff appearance b. Rising steam d. Mix slumps in truck 45. Aggregate for 92% - 95% of the weight of the bituminous mixture asphalt s for 5% - 8% of the weight of the mix. The exact percentage to be used is determined by the __. a. Trial mix c. Design mix b. Job mix d. Flash point 46. The penetration test is an indication of the ___ of asphalt. a. Consistency c. Softness b. Hardness d. Job order 47. A sample from a bituminous mix weighs 1,000 grams. At extraction, it was found out that the dry aggregates weighed 950 grams. What is the % of asphalt by weight of mix? a. 5.2% c. 5.0% b. 5.4% d. 4.8% 48. If the bituminous mix in No.40 has a 5% air voids, the bulk specific gravity (Gmb) can be computed as: a. 2.51 c. 2.39 b. 2.27 d. 2.41 49. Which one is the thinnest among the following types of cutback asphalt? a. MC 30 c. MC 250 b. MC 70 d. MC 800 50. An asphalt mix prepared in the laboratory used 30%, 50%, 20% by weight of coarse aggregate (CA), fine aggregate (FA) and mineral filler (MF), respectively. If the specific gravity of CA, FA and MF are 2.50, 2.65 and 2.50, respectively, the overall specific gravity of composite aggregates is: a. 2.58 c. 2.66 b. 2.45 d. 2.77

53. The primary quality control mechanism for the production of asphalt mixtures which will have a high degree of uniformity that will satisfy job requirements is called: a. Marshall Stability test b. Job mix formula c. Immersion-compression stability test d. A and B 54. Which of the following bituminous material is best recommended for sealing weakened plane and construction ts of the PC? a. Asphalt cement c. Cutback asphalt b. Emulsified asphalt d. t filler asphalt 55. Asphalt cement can be a good bituminous binder material for Item: a. 301 c. 308 b. 302 d. 310 56. In identifying project location intended for asphalt pavement, which of the following criteria is not appropriate to recommend? a. Drainage facilities is well-maintained b. Location is not a tycoon belt c. Existing base course is stable d. Flood-prone section 57. What Item in the DPWH standards and specification is bituminous task coat? a. 301 c. 303 b. 302 d. 310 58. The test in emulsified asphalt which determines the resistance of the emulsion to break when mixed with mineral aggregates is: a. Solubility c. Cement mixing b. Sieve test d. Storage stability 59. Based on the minimum testing requirements for Item 309, bituminous plant mix, general, one quality test for asphaltic materials requires for every ___ tonnes or fraction thereof. a. 40 c. 60 b. 50 d. 70

ASPHALT TECHNOLOGY 60. The control of temperature during the mixing and compaction is of great significance in the ___ of the resulting pavement. a. Strength c. Flexibility b. Skid resistance d. All of the above

70. The characteristics of a bituminous mix that indicates resistance to disintegration is called: a. Stability c. Durability b. Flexibility d. Integrity

61. In asphalt pavement, prior to acceptance, a sample of full depth, 150mm x 150mm or 100mm diameter shall be taken by a saw or core drill for ___. a. Thickness determination c. Stability b. Density d. A and B

71. Emulsified asphalt that has a positive charge particle is usually classified: a. Anionic c. Pozzolanic b. Cationic d. Ultrasonic

62. In bituminous mixture, aggregates for 92% to 95% of the weight of the mixture, while asphalt (the binder of the aggregates) for: a. 3 – 5 % c. 5 – 10 % b. 5 – 8 % d. 7 – 10 % 63. The service performance of an asphalt pavement is greatly influenced by: a. Grade of asphalt c. A and B b. Quantity of asphalt d. None of the above 64. The optimum asphalt content obtained in a Marshall Stability test is the average of the asphalt content of maximum stability, maximum density and a. Minimum flow index c. 4% or designed air voids b. Cutback asphalt d. Maximum VFA

72. Item 310, Bituminous surface course, hot laid, provides an air void between: a. 3 – 5 % c. 5 – 8 % b. 5 – 7 % d. 8 – 10 % 73. The type of asphaltic material that is usually classified by its viscosity is: a. Liquid asphalt c. Rock asphalt b. Blown asphalt d. Lake asphalt 74. Another name for t filler is: a. Asphalt cement c. Mineral filler b. Cutback asphalt d. Blown asphalt 75. The amount of asphalt in a typical emulsion is: a. 40% c. 60% b. 50% d. 70%

65. The type of asphaltic material that is being referred to by penetration grade is: a. Emulsified asphalt c. Asphalt cement b. Cutback asphalt d. Mastic asphalt

76. The thinnest and most fluid grade of medium curing cutback asphalt is: a. MC – 800 c. MC – 70 b. MC – 250 d. MC – 30

66. The rate of asphaltic material that is being referred to be penetration grade is: a. 0.2 – 0.5 c. 0.15 – 0.7 b. 0.2 – 0.7 d. 1.0 – 2.0

77. A job-mix formula provides for close control of: a. Asphalt content b. Aggregate gradation c. Temperature of asphalt, aggregate & mix d. All of the above

67. A compacted bituminous pavement shall have a minimum density of equal to greater than ___. *97% a. 85% c. 95% b. 90% d. 100% 68. ___ test compares the compressive strength of dry and wet specimen of bituminous mix. a. Marshall Stability c. Extraction b. Immersion-compression d. Bulk specific gravity 69. In Item 310, bituminous surface course, hot laid, requires 70% minimum index of retained strength (IRS). In the immersioncompression test, the dry stability is about 900 psi. Based on the data, the wet stability should be at least ___ psi. a. 270 c. 1,286 b. 630 d. 1,500

78. An asphalt pavement needs sufficient ___ to avoid flushing or bleeding. a. Compaction c. Binder b. Air voids d. Mineral filler 79. ___ test indicates the temperature in which asphalt cement may be heated without the danger of catching fire. It is used as criterion in: a. Softening point c. Laser point b. Flash point d. Heating point 80. The acting cementing power in asphalt is called a. Petrolene c. Bitumen b. Asphaltene d. Resin

ASPHALT TECHNOLOGY 81. In an Immersion-Compression test, moulding of specimen is done into ___ layer/s. a. 1 c. 3 b. 2 d. 4

91. If an asphalt pavement will be constructed over an old existing concrete pavement, ___ should be applied to the pavement. a. Tack coat c. Seal coat b. Prime coat d. Mortar coat

82. The apparatus used in determining the grade of asphalt cement is: a. Hydrometer c. Petrometer b. Penetromanometer d. Penetrometer

92. Asphalt cement submitted in the laboratory for quality test should always have a corresponding: a. Job mix formula c. Sample card b. Test report d. Minimum testing requirements

83. Resistance to deformation of bituminous mixture is measured by ___. a. Flow index c. Ductility test b. Index of retained strength d. Extraction test

93. The localized upward displacement, if a pavement due to swelling of the subgrade or some portion of the pavement structure. a. Upheaval c. Raveling b. Edge-cracking d. Depression

84. The temperature of bituminous hot mix delivered in the project site should not be less than its ___ temperature. a. Mixing c. Moulding b. Compaction d. Spreading 85. The softness and hardness of an asphaltic material can be determined by ___ test. a. Softening point c. Penetration b. Extraction d. Compression 86. ___ test determines the amount of asphalt present in a bituminous mix. a. Distillation c. Solubility b. Extraction d. Compression 87. In cutback asphalt, medium curing type is a combination of the following: a. Asphalt cement and road oils b. Asphalt cement and kerosene c. Asphalt cement and gasoline d. Asphalt cement and emulsifier 88. Another name for hot asphalt is ___. a. Bituminous asphalt c. Emulsified asphalt b. Asphalt cement d. Blown asphalt 89. ___ test is measured by distance to which it will elongate before breaking when two (2) ends of a briquette with specimen are pulled apart at a specified speed and temperature. a. Penetration c. Ductility b. Solubility d. Viscosity 90. The amount of emulsified asphalt to be added in a bituminous plant-mix surface course, cold laid (Item 308), shall be ___ mass percent, total dry aggregate basis: a. 4 to 8 c. 6 to 10 b. 5 to 10 d. 7 to 12

94. ___ is the result of asphalt layer instability or granular base or subgrade weakness. The pavement usually twists out of shape. a. Disintegration c. Distortion b. Upheaval d. Bleeding 95. In the preparation of asphalt design mix intended for Item 310, the proportion of bituminous material (asphalt cement) on the basis of total dry aggregates shall be from: a. 4 to 8 % c. 5 to 7 % b. 3 to 5 % d. 5 to 8 % 96. Item 306 is called: a. Bituminous Surface Treatment b. Bituminous Road Mix Surface Course c. Bituminous Plant Mix (Stockpile Maintenance Mixture) d. Bituminous Penetration Macadam Pavement 97. A test covers the quantitative determination of bitumen in hot mixed paving mixtures and pavement samples for specification acceptance, service evaluation, control and research: a. Extraction test c. Hot-mixed temperature test b. Spot test d. solubility test 98. Interconnected cracks forming a series of small blocks resenting an alligator skin or chicken wire: a. Alligator cracks c. Transverse cracks b. Hairline cracks d. Slippage cracks 99. A layer of an asphalt aggregate mixture of variable thickness used to eliminate irregularities on the content of an existing surface prior to placement of an overlay: a. Asphalt cement c. Asphalt leveling course b. Asphalt surface treatment d. Asphalt seal coating 100. The upward movement of asphalt in asphalt pavement resulting in the formation of a film of asphalt on the surface. a. Blow up c. Bleeding or flushing asphalt b. Asphalt seal coat d. Upheaval