26. Bituminous concrete is a mix comprising of ___.

A.  fine aggregate and bitumen

B.  coarse aggregate, fine aggregate, filler and bitumen

C.  coarse aggregate, filler and bitumen

D.  fine aggregate, filler and bitumen



Answer: B        coarse aggregate, fine aggregate, filler and bitumen



27. If aggregate size of 50-40 mm is to be tested for finding out the portion of elongated aggregates using length gauge, the slot length of the gauge should be ___ mm.

A.  45

B.  54

C.  81

D.  90



Answer: C         81       


Slot length for elongated aggregate = 1.8 x mean dimension = 1.8((50 + 40)/2) = 81

For flakiness index, the slot size mm = 0.6((50 + 40)/2) = 27 mm



28. The consistency and flow resistance of bitumen can be determined from ____.

A.  Ductility test

B.  Viscosity test

C.  Softening point test

D.  Penetration test



Answer: B     Viscosity test



29. Match List-I (Test) with List-II (Property) and select the correct answers using the codes given below the lists:

List – I

List – II

A. Crushing test

1. Hardness

B. Los Angeles abrasion test

2. Weathering

C. Soundness test

3. Shape

D. Angularity test

4. Strength


A.  A-2, B-1, C-4, D-3

B.  A-4, B-1, C-2, D-3

C.  A-3, B-2, C-1, D-4

D.  A-4, B-2, C-3, D-1



Answer: B     A-4, B-1, C-2, D-3



30. Bituminous materials are commonly use in highway construction because of their good ____.

A.  shear strength and tensile properties

B.  tensile and compression properties

C.  binding and water proofing properties

D.  bond and tensile properties



Answer: C       binding and water proofing properties





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