Home › B.Tech Civil › civilengineering › Aggregates › The percentage voids in an aggregate sample with…
The percentage voids in an aggregate sample with bulk density (gamma) and specific gravity (Gs) is given by:
A{'text': '(Gs / gamma) * 100', 'label': 'A'}
B{'text': '(gamma / Gs) * 100', 'label': 'B'}
C{'text': '((gamma - Gs) / gamma) * 100', 'label': 'C'}
D{'text': '((Gs - gamma) / Gs) * 100', 'label': 'D'}
Answer & Solution
Correct answer: D. {'text': '((Gs - gamma) / Gs) * 100', 'label': 'D'}
1. §2.2.7 gives the formula: Percentage voids = (Gs - gamma)/Gs × 100, where gamma = bulk density in kg/litre and Gs = specific gravity in saturated surface dry condition.
2. Same formula is re-used in §2.3.1(vi) Bulk Density and Voids test.
_Source: IGNOU ET-522 Block-1 Unit-2 Aggregates, §2.2.7 and §2.3.1(vi), pp. 21 and 36_
Related questions
Per the source, three thermal properties of aggregates are named; the one most important fIn the Mortar Bar Expansion Test (Stanton) cited in §2.2.12, the aggregate is considered HPer §2.3.2(iii), in the Aggregate Impact Value test the standard hammer falls from a heighPer §2.3.2(i), in the Aggregate Crushing Value (ACV) test the aggregate sample is loaded uPer §2.3.1(v) of the source, the specific gravity of an aggregate sample is computed by:Per §2.2.14, the Fineness Modulus range that corresponds to MEDIUM sand is:Per Abrams (cited in §2.2.14), the Fineness Modulus of an aggregate is obtained by:Per the prevention measures in §2.2.12, the alkali content of cement to limit alkali-aggre