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A Marshall specimen is prepared for bituminous concrete with a bitumen content of 5 percent by measured unit weights of the mix are 2.442 g/cm3 and 2.345 g/cm3 , respectively. The bitumen has a specific gravity of 1.02. The percent voids in mineral aggregate filled with bitumen (VFB) are
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- 34.55
- 35.9
- 73.55
- 74.3
- 34.55
Correct Option: C
Gt = 2.442 g/cm2
Gm = 2.345 g/cm2
% air voids (Va) = | = 1.917 | |
Total volume |
= | × 100 | |||
C1 |
= | × 100 = 4.1369 | |
2.345 |
Vol of bitumen ,Vb = Gm × | ||
Gb |
= | = 11.49% | |
1.02 |
% voids filled by bitumen
= | = 73.536% | |
0.11495 + 0.04 |