A. 30/40
B. 60/70
C. 80/100
D. 100/120
Related Mcqs:
- Bitumen of grade 80/100 means______________?
A. its penetration value is 8 mm
B. its penetration value is 10 mm
C. its penetration value is 8 to 10 mm
D. its penetration value is 8 to 10 cm - Which of the following represents a carpet of sand-bitumen mix without coarse aggregates ?
A. mastic asphalt
B. sheet asphalt
C. bituminous carpet
D. bituminous concrete - Percentage of free carbon in bitumen is______________?
A. more than that in tar
B. less than that in tar
C. equal to that in tar
D. none of the above - The ductility value of bitumen for suitability in road construction should not be less than____________?
A. 30 cm
B. 40 cm
C. 50 cm
D. 60 cm - Softening point of bitumen to be used for read construction at a place where maximum temperature is 40° C should be______________?
A. less-than 40°C
B. greater than 40°C
C. equal to 40°C
D. none of the above - Penetration test on bitumen is used for determining its_____________?
A. grade
B. viscosity
C. ductility
D. temperature susceptibility - In the penetration macadam construction, the bitumen is__________________?
A. sprayed after the aggregates are spread and compacted
B. premixed with aggregates and then spread
C. sprayed before the aggregates are spread and compacted
D. none of the above - The effect of grade on safe overtaking sight distance is_______________?
A. to increase it on descending grades and to decrease it on ascending grades
B. to decrease it on descending grades and to increase it on ascending grades
C. to increase it on both descending and ascending grades
D. to decrease it on both descending and ascending grades - If ruling gradient is I in 20 and there is also a horizontal curve of radius 76 m, then the compensated grade should be_________________?
A. 3 %
B. 4%
C. 5 %
D. 6% - The recommended grade of tar for grouting purpose is_______________?
A. RT-1
B. RT-2
C. RT.3
D. RT-5
