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