Materials 2
Settings
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- 1.__ test determines the amount of asphalt present in a bituminous mix
- A.
Distillation
- B.
Extraction
- C.
Solubility
- D.
Compression
- 2.The softness and hardness of an asphaltic materials can be determined by ___ test
- A.
Softening point
- B.
Loss on heating
- C.
Penetration
- D.
Distillation
- 3.The temperature of bituminous hot mix delivered in the project site should not be less than its __ temperature.
- A.
Mixing
- B.
Compaction
- C.
Molding
- D.
Spreading
- 4.Resistance to deformation of bituminous mixture is measured by ___
- A.
Flow index
- B.
Index of retained strength
- C.
Ductility test
- D.
Extraction test
- 5.The apparatus used in determining the grade of asphalt cement is
- A.
Hydrometer
- B.
Penetromanometer
- C.
Petronmeter
- D.
Penetrometer
- 6.In an Immersion-Compression test, molding of specimen is done into ___ layers
- A.
1
- B.
2
- C.
3
- D.
4
- 7.In Marshall Stability, molding of specimen is done into __ layer
- A.
1
- B.
2
- C.
3
- D.
4
- 8.The actual cementing power in asphalt is called the __
- A.
Petrolene
- B.
Asphaltene
- C.
Bitumen
- D.
Resin
- 9.An asphalt pavement needs sufficient ___ to avoid flushing or bleeding
- A.
Compaction
- B.
Air voids
- C.
Binder
- D.
Mineral filler
- 10.A job-mix formula provides for close control of
- A.
Asphalt content
- B.
Aggregate gradation
- C.
Temperature of asphalt, aggregate and mix
- D.
All of the above
- 11.The thinnest and most fluid grade of medium curing cutback asphalt is:
- A.
MC-800
- B.
MC-250
- C.
MC-70
- D.
MC-30
- 12.The amount of asphalt in a typical asphalt emulsion is
- A.
40%
- B.
50%
- C.
60%
- D.
70%
- 13.Another name for joint filler is
- A.
Asphalt cement
- B.
Cutback asphalt
- C.
Mineral filler
- D.
Blown asphalt
- 14.The type of asphaltic material that is usually classified by its viscosity is
- A.
Liquid asphalt
- B.
Blown asphalt
- C.
Rock asphalt
- D.
Lake asphalt
- 15.Item 310, bituminous surface course, hot laid provides an air voids between
- A.
3-5%
- B.
5-7%
- C.
5-8%
- D.
8-10%
- 16.Emulsified asphalt that has a positive charge particle is usually classified
- A.
Anionic
- B.
Cationic
- C.
Pozzolanic
- D.
Ultrasonic
- 17.The characteristics of a butuminous mix that indicates to disintegration is called
- A.
Stability
- B.
Flexibility
- C.
Durability
- D.
Integrity
- 18.The coarse aggregate used in bituminous mix are those retained at sieve no.
- A.
8
- B.
10
- C.
30
- D.
200
- 19.__ test compares the compressive strength of dry and wet specimen of bituminous mix
- A.
Marshall stability
- B.
Immersion-compression
- C.
Extraction
- D.
Bulk specific gravity
- 20.In Item 310, bituminous surface course, hot laid requires 70% minimum of index of retained strength (IRS). In the immersion-compression test, the dry stability is about 900 psi. Based on the data, the wet stability be at least __ psi.
- A.
270
- B.
630
- C.
1286
- D.
830
- 21.A compacted bituminous pavement shall have a minimum density of equal to or greater than __ %
- A.
85
- B.
90
- C.
95
- D.
100
- 22.The rate of application of emulsified asphalt used as tack coat, should be within the range of __ liter/sq.m
- A.
0.2-0.5
- B.
0.2-0.7
- C.
0.15-0.7
- D.
1.0-2.0
- 23.The type of asphaltic material that is being referred to by penetration grade is
- A.
Emulsified asphalt
- B.
Cutback asphalt
- C.
Asphalt cement
- D.
Mastic asphalt
- 24.The service performance of an asphalt pavement is greatly influence by
- A.
Grade of asphalt
- B.
Quantity of asphalt
- C.
A and b
- D.
None of the above
- 25.In bituminous mixture, aggregates account for 92%-95% of the weight of the mixture, while asphalt ( the binder of aggregates) accounts for __
- A.
3-5%
- B.
5-8%
- C.
5-10%
- D.
7-10%
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