Per §10.8 (Step 4, Table 10.7) at w/c = 0.60 and compacting factor 0.8…

Question

Per §10.8 (Step 4, Table 10.7) at w/c = 0.60 and compacting factor 0.80, the reference WATER CONTENT for 20 mm aggregate concrete is approximately:

Accepted Answer

D. {'text': '186 kg per cubic metre of concrete', 'label': 'D'}

1. Table 10.7 lists water content per m³ of concrete for w/c = 0.60, CF = 0.80, ≤ M35: 10 mm aggregate → 200 kg, 20 mm → 186 kg, 40 mm → 165 kg.
2. Sand as % of total aggregate by absolute volume is 40 / 35 / 30 respectively.
_Source: IGNOU ET-522 Block-3 Unit-10 Concrete Mix Design, Table 10.7, §10.8 Step 4, p. 18_

Answer

{'text': '165 kg per cubic metre of concrete', 'label': 'A'}

Answer

{'text': '250 kg per cubic metre of concrete', 'label': 'B'}

Answer

{'text': '200 kg per cubic metre of concrete', 'label': 'C'}