問題一覧
1
23.This test is conducted to determine the resistance of the aggregate to disintegration due to weathering by saturated solutions of sodium sulfate and magnesium sulfate.
Soundness Test
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24. The higher the fineness modulus the __________ is the aggregate.
Coarser
3
25. For the California Bearing Ratio (CBR) Test, you found that the computed CBR @ 0.1 is less than the CBR @ 0.2, what will you do?
Retest the sample and use the CBR with the larger value
4
26. What is the size of sieve in which a soil sample for use in a liquid limit test is required to pass?
passing the 0.425 mm
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27. When is the proper time that the testing materials should be done in a construction of a project?
prior to incorporation into the work
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28. In California Bearing Ratio Test, what is the diameter in inches (in) of the Penetration Piston?
1.945
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29. The required diameter of the sample before crumbling occurs in Plastic Limit Test:
3.2 mm
8
30. What is the condition of your soil sample for liquid limit and plastic limit?
Air-dried
9
8 An Asphalt Cement having the hardest Penetration Grade:
AC 40-50
10
The Minimum Testing Requirement for the quality test of Asphaltic Materials.
1Quality Test for every 40 tonnes/200 drums or fraction thereof
11
10 What is the required size of an Emulsified Asphalt sample for quality test?
4 liters
12
11 A Slow-Curing Cutback Asphalt is readily identified by the characteristic smell of?
Oil
13
12 This test indicates the safe heating temperature of the asphalt.
Flash Point
14
13 This test measures the ability of asphalt to stretch without breaking.
Ductility
15
14 In Ductility Test of asphaltic materials (ASTM D113), the specimen in the briquette is pulled apart at a rate of?
5 cm/min
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15 This test determines if the asphalt is overheated or not during production.
Spot Test
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16 The test where the values are used for converting volumes to units of mass.
Specific Gravity
18
17 A laboratory personnel uses a pycnometer with a mass of 52.135 g for determining the specific gravity of an AC 60- 70 Grade Asphalt Cement sample. After filling it up with distilled water, the resulting weight is 62.904g. The personnel then added 4.667 g sample to the pycnometer to make it filled with sample. An additional 6.196 g of distilled water is required to make the pycnometer half-filled with sample to make it full. Determine the sample's specific gravity.
1.021
19
19 The minimum testing requirement for Quality Test of bituminous mix is?
130 tonnes or fraction thereof
20
21 In the preparation of specimens for Compressive Strength of Bituminous Mixtures, the molding temperatures shall be for hot mixtures containing asphalt.
None of the above
21
22 What type of Portland Cerment conforming to ASTM C150 is required to use in the cement mixing test of emulsified asphalt?
Type III
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23 What is the condition of the compacted pavement when the following laboratory data was obtained: 2.295 bulk specific gravity of the extracted asphalt core, 2.408 bulk specific gravity of the laboratory compacted specimen?
Satisfactorily compacted
23
24 Binder storage and mixing temperatures should not exceed?
175 °C