Materials Engineer Review

1. A Department order tells that no acceptance and final payment shall be made on completed concrete and Asphalt pavement unless core test for thickness determination and density is conducted.

Do No. 119

Do. No. 48

Do.No. 80

DO No. 52

2. When concrete must be placed in a sloping surface, placing should start at the __________.

Bottom

Top

Middle

Can be top or bottom

3. The trial section for compaction for each type of fill materials and type of equipment to be used in the work should have an area of__________.

500 sq. m.

335 sq. m.

600 sq. m.

400 sq. m.

4. This is a new method of soil stabilization being introduced to improved the properties of soil which is effective and at the same time cheaper

Stabilization by the use of Geotextiles

Cement stabilization

Bituminous stabilization

Lime stabilization

5. A type of cement that sets and hardens by chemical interaction with water and is capable of doing so underwater

Portland Cement

Hydraulic Cement

Air-Retaining Portland Cement

All of the above

6. All asphalt are _______, they became harder as temperature decreases and softer as their temperature increases

Thermoplastic

Brittle

Hyrophobic

None of the above

7.

What test determined the crushing of strength of aggregates to ensure that course aggregates will not degrade to smaller ones.

Abrasion

Grading Test

Density

Plasticity test

8. Oversanded and undersanded concrete mixtures require more water in order to be workable but will only result to ______________.

Good surface texture

Water tightens

Weak strength

All of the above

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

Sand

Concrete Aggregate

Bituminous Blended Aggregate

10. Problems regarding quality of construction materials shall be reported directly by the Contractor's Materials Engineer to the ____________.

Contractor

DPWH Materials Engineer

Contractor’s Project Engineer

None of the above

11. How is the consistency of liquid asphalt determined?

Viscometer

Tag open cup

Penetrometer

Thermometer

12. For major interchanges and busy intersection, PCCP will be allowed to open on the ________ to minimize occurrence of road congestion.

14th day

12th day

10th day

7th day

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

Absolute Volume Method

Area Method

American Method

14. In direct shear test, the soil is sheared to failure by moving one part of the soil sample relatively to the other part along a pre-determined plane. When several test are made on a soil under different normal loads and the results are plotted in arithmetic scales, the resulting line is made in the form of ____________.

Straight line

Parabola

Semi-elliptical

Hyperbola

15. A department order hereby directed that the only test report issued by the regional/district laboratories of department and other testing laboratories accredited by DPWH shall be allowed to be used in acceptance or rejection of construction materials

Do No. 80

DO No. 52

Do. No. 48

Do.No. 135

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

Quality Control Program

Program of Work

Work Schedule

Minimum Testing Requirement

17. Shringkage factor test is _______________.

Test to determine pay volume

Test to determine strength characteristic

Test to determine volume change

Test to determine maximum density

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

Flexibility

Rigidity

Hardness

Ductility

19. The wearing away of the pavement surface caused by the dislodging of aggregate particle is called ______________.

Alligator crack

Raveling

Rutting

Bleeding

20. ___________ is a reflector which shall be the short base type having a maximum base area of 180 mm x 140 mm.

Flash surface reflective stud

Traffic Cone

Brinnell

Vicat

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

Boiling Point

Fire Point

Softening Point

Burning Point

22. What is the minimum number of representative cores that shall be taken from each member area of concrete in place that is considered deficient?

3 cores

4 cores

5 cores

Core must be taken at 5 meter interval backward & forward of the designed sta.

23. In conducting soil exploration survey, what equipment you will use in obtaining undisturbed samples

Thin-walled sampler

Split spoon sampler

Screw type soil auger sampler

Post-hole auger sampler

24. No contractor shall start any concreting without a pouring permit duly approved and issued by Proj. Engr

Do No. 211

DO No. 221

Do.No. 230

Do. No. 212

25. For small contract project of the DPWH located in remote areas where the quality of cement to be used is too small and where there are no accessible testing laboratory to check the quality of materials, exception in the requirements for performance of laboratory test in cement prior to use may be allowed provided that the trial mixes be done for every ___________.

Deformation characteristic of soil

Engineering properties of the underlying soils

Arrangement of soil strata

Field Density of soil

26. As per guidelines on submission of samples, laboratory trial mixes should be made on aggregates which are proposed tube used for the first time, in this case what is the weight of fine aggregates to be submitted for testing?

100 kgs.

70 kgs.

80 kgs.

50 kgs.

27. Where to determine the amount of mixing water to use when compacting the soil in the field to attain maximum density

Lab. Compaction Test

Field Density Test

Control Strip

Trial Section

28. 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:

Bulk Specific Gravity

Dry Specific Gravity

Apparent Specific Gravity

Wet Specific Gravity

29. Correcting projects with noted defects/deficients prior to partial full payment

DO No. 40

Do. No. 125

Do.No. 200

Do No. 139

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

Flexibility

Durability

Ductility

Rigidity

31. The higher the ________, the lower the penetration.

Specific gravity

Durability

Viscosity

Solubility

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

Distillation

Extraction

Float Test

Slump test

33. Retempering of concrete or mortar, which has partially hardened, will be permitted with the addition of cement, aggregate or water

Yes

No

It depends on the condition of concrete

Check the slump

34. The __________ material shall be of such quality that it will not darken or become yellow when a thin section is exposed to sunlight.

Non-volatile

Coarse

Deleterious

Solvent

35. Control slip shall have an area of approximately ____________.

500 sq. m.

335 sq. m.

600 sq. m.

400 sq. m.

36. The phosphorous content of reinforcing steel bars bigger than 9.0 mm shall not exceed

0.18%

0.06%

0.05%

0.08%

37. Amendment to DO 184, series of 1999, re-Guidelines on the Accreditation of Contractoors & Consultant's Materials Engineer.

Do No. 52

DO No. 206

Do. No. 48

Do.No. 200

38. What control during the mixing and compaction of the bituminous pavement is of great significance in the resulting pavement

Compaction

Density

Temperature

Grading of aggregates

39. Reactivation of the quality assurance unit regional office

Do.No. 80

Do No. 155

DO No. 52

Do. No. 04

40. The quality of paving concrete is usually measured by its _____________.

Compressive

Flexural

Tensile

Bond strength

41. This is the empirical indicator of the clay fraction of a binder material in a stabilized soil mixture.

Group Index

Liquid Limit

Plasticity Index

Plastic Limit

42. As Materials Engineer, what would you recommend in order to check the suitability and efficiency of the equipment to used prior to subbase construction for item 310, Bituminous Concrete Surface Course?

Make a trial section

Make trial mix

Establish control strips

None of the above

43. The apparatus used to determine the initial and final setting of cement in the laboratory is _________.

Gillmore needles

Bailey needle

Vicat apparatus

Blaine Air Permeability Apparatus

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

Coarse

Fine

Mineral Filler

Admixture

45. Generally speaking, batching of concrete aggregates by volume is preferable than weight.

True

False

They are the same

46. Job-mix formula submitted for approval shall propose definite single values for, except _____.

% of aggregate passing each specified sieve

Temperature of the mixture delivered on the road

Percent of bituminous materials to be added

Mixing time of the mixture in the batching plant

47. A departmnet order memorandum circular, a revised method for FDT.

DM No. 52

DM. No. 20

DM No. 48

DM.No. 80

48. Quality of factor – produced reinforced concrete pipes may be best established through what?

Compressive strength test

Flexural strength test

Core test

Crushing strength test

49. _________ is a type of cement which shall be transferred to an elevated, air tight and weather proof bins storage

Portland Cement

Bulk Cement

Pozzolan Cement

None of the above

50. Standard Specification for Chemical Admixtures for Concrete?

DMC No. 03

DMC No. 25

DMC No. 200

DMC No. 40

51. The apparatus used in determining the consistency of asphalt cement is ___________.

Penetrometer

Viscometer

Thermometer

Tag open cup

52. A deprtment order series of 1997 give supplement guidelines on the conduct of project assestment by the quality assurance unit regional office.

Do. No. 80

DO No. 20

Do. No. 48

Do.No. 52

53. Portland cement stabilization roadmix base course is an intimate mixture of pulverized soil, Portland cement and water which is thoroughly compacted while in a moist condition to form a structural road material when the cement hydrates and crystallizes. What is the mass percent wear of soil aggregate used in this stabilization?

40%

45%

Not more than 40%

50%

54. Adoption of DPWH Standard Specifications for Public Works and Highways 1995 edition Vol II in the Implementation of all Infrastructure Project

Do No. 14

Do. No. 25

Do.No. 200

DO No. 40

55. A departmnet order series of 1997, revised DPWH Standard Specification for Elastrometric bearing pads for bridge super structures.

Do No. 48

Do. No. 20

Do.No. 80

DO No. 52

56. Guidelines for re-coring of Concrete pavement and concrete structures for strength determination.

Do No. 200

Do. No. 125

Do.No. 127

DO No. 40

57. A department order which uses a fly ash in concrete.

Do No 34

DO No. 50

Do. No. 38

Do.No. 80

58. Use of High- Early Strength Concrete in the construction of national Roads and Major Exchanges.

DO No. 52

Do. No. 10

Do No. 115

Do.No. 80

59. This is the most fluidest and lightest of all the grade of Medium Curing Cut-back Asphalt

MC – 30

MC – 800

MC – 300

MC – 70

60. A department order for sampling and testing of materials

DO No. 22

Do No 53

Do. No. 24

Do.No. 13

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

Stability

Flexibility

Tensile

Durability

62. When water is added to the mixture to bring the slump within required limit, it shall be injected into the mixer under such pressure and direction of flow that the requirement for uniformity and desired slump of concrete are met. The drum shall be turned on additional _______ revolution or more.

10 revolutions

30 revolutions

45 revolutions

15 revolutions

63. The bottom bearing block shall be at least _______ thick after any resurfacing operations.

0.9”

1.2”

1.0”

0.8”

64. A Department order for testing and acceptance of concrete.

Do No 57

DO No. 25

Do. No. 43

Do.No. 80

65. The required thickness of the thermoplastic paint in PCCP is ____0.33L/sq.m______.

3.2 to 4.8 mm.

3.0 to 4.5 mm.

3.3 to 3.8 mm.

3.2 to 4.0 mm

66. The composition of yellow paint shall be _______ pigment and ______ vehicle.

40% pigment and 77% vehicle

29% pigment and 77% vehicle

23% pigment and 77% vehicle

26% pigment and 77% vehicle

67. The strength level of concrete will be considered satisfactory if the average of all sets of three consecutive strength test result equal or exceed the specified strength and no individual strength test result is deficient by more than how many percent?

25%

20%

15%

10%

68. Utilizing first the services of the Bereau of Research and Standards,Regional & District Laboratories in testing of samples of construction materials

Do.No. 18

Do. No. 48

DO No. 15

Do No. 29

69. How many days shall the Engineer be notified in advance of the date that the treating process will be performed in order that the untreated lumber, the treatment process and the finished treatment timber may all be inspected?

15 days

10 days

21 days

7 days

70. For a rich mixture of cement in concrete, what determines the flexural strength of the concrete

Mortar strength

The strength of aggregate

The water/cement ratio

Both a & b

71. What primarily influence the grade of asphalt to be selected?

Penetration

Climate

Class of aggregate

Temperature

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

0.10

0.25

1.0

0.80

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

Metal Pycnometer

Glass Pycnometer

Any bottle

Vicat Apparatus

74. The mass percent of wear of coarse aggregates for item 311 when tested by AASHTO 96 is not greater than ____________.

40%

45%

50%

55%

75. A Memorandum Circular Order states that all Materilas men in-charge in a said project shall keep a logbook on materials quality control.

MC 135

MC 80

MC 119

MC 200

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

2”

4”

1”

3”

77. The viscosity of the asphalt during mixing and lay down is ____________.

Viscosity at 135*C

Viscosity at 125*C

Viscosity at 60 °C

Viscosity at 163*C

78. A memorandum circular for where the contractor Is required to provide quality control personnel and fully equipped laboratory building.

MC 38

MC 33

MC 19

MC 20

79. Bituminous stabilization in the process of mixing intimately pulverized soil and bituminous material. What is the minimum bearing capacity (soaked CBR ) of the mixture?

80%

100%

95%

98%

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

5%

6%

3%

2%

81. Use of Different brands or same brand of ce`ment in concrete constructon.

Do. No. 44

DO No. 02

Do No 55

Do.No. 80

82. Proper edging on forms and joints of concrete pavement.

DO No. 02

Do No.05

Do. No. 48

Do.No. 08

83. The only kind of asphalt that can be used in all bituminous item of work.

Asphalt Cement

Cut-back Asphalt

Emulsified Asphalt

All of the above

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

10 hrs.

24 hrs

36 hrs.

72 hrs.

85. Testing of Construction materials intended for regular maintenance projects.

Do.No. 80

Do. No. 43

Do No.83

DO No. 5

86. Rate of application for curing compound is _______________.

0.29 li/sq. m.

0.20 li/sq. m.

0.15 li/sq. m.

0.10 li/sq. m.

87. Penetration and ductility test of asphalt are done in __________ temperature.

60*C

25 °C

50*C

10*C

88. For pavement markings, the composition of white paint shall be _______ pigment and ______% of vehicle

40 – 50 % pigment; 50 – 60% vehicle

42 – 45 % pigment; 53 – 55% vehicle

45 – 55 % pigment; 55 – 60% vehicle

40 – 45 % pigment; 50 – 55% vehicle

89. It 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.

Bulk Specific Gravity

Dry Specific Gravity

Apparent Specific Gravity

Wet Specific Gravity

90. Traffic paint shall be applied to the pavement at the rate of 0.33 li/sq. m. and shall dry sufficiently to be free it from cracking from ___________.

25 to 30 mins

10 to 15 mins

20 to 25 mins

15 to 30 mins

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

5 mass percent

3 mass percent

10 mass percent

12 mass percent

92. Expansion joint filler having a nominal thickness of less than ________ mm. shall not be subject to a requirement for water absorption.

10 mm

15 mm

18 mm

9.5 mm

93. 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.

11 ºC

2 ºC

15 ºC

10 ºC

94. The maximum percent abrasion loss allowed for concrete coarse aggregate is __________.

30%

40%

45%

50%

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

30 min.

60 min.

90 min.

45 min.

96. For soil classification purposes as in AASHTO M45, what is not required

Combined sieve and mechanical analysis

Sieve analysis

The wash test

None of the above

97. The surface of riprap shall not vary from the theoretical surface by more than ______ mm at any point.

150 mm

300 mm

200 mm

100 mm

98. Proper construction and sealing of joints of concrete in concrete contruction.

DMC No 55

DO No. 02

Do. No. 44

DMC.No. 83

99. The penetration of concrete joint sealer, Hot Poured Elastic Type shall not exceed______

100

45

80

90

100. A memorandum circular for guidelines and submission of samples.

MC 20

MC 19

MC 35

MC 38