|
86. The standard load value on standard crushed aggregates for CBR test at 2.5 mm penetration is ____. |
|
A. 1370 kg |
|
B. 2000 kg |
|
C. 2055 kg |
|
D. 1450 kg |
|
Answer: A 1370 kg |
|
87. IRC recommends standard test to evaluate hardness of road aggregate is ____. |
|
A. crushing test |
|
B. shape test |
|
C. Impact test |
|
D. Los-Angeles Abrasion test |
|
Answer: D Los-Angeles Abrasion test |
|
88. The modulus of subgrade reaction of soil can be calculated for the pressure corresponding to a mean settlement of ____. |
|
A. 0.20 cm |
|
B. 0.125 cm |
|
C. 0.25 cm |
|
D. 0.15 cm |
|
Answer: D 0.15 cm |
|
89. For the bituminous material, the ring and ball apparatus determines ____. |
|
A. viscosity |
|
B. specific gravity |
|
C. softening point |
|
D. ductility |
|
Answer: C softening point |
|
90. Standard impact test on road aggregate evaluates ____. |
|
A. hardness |
|
B. strength |
|
C. durability |
|
D. toughness |
|
Answer: D toughness |