The IS 10262:2019 concrete mix design method determines water content based on:
Choose the correct answer
Only cement content
Nominal aggregate size and required workability (slump) — using IS 10262 Table 2
Temperature of concrete only
Water content is always 200 L/m³
Correct Answer
B. Nominal aggregate size and required workability (slump) — using IS 10262 Table 2
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IS 10262:2019: Water content selected from Table 2 for given nominal aggregate size and workability (slump): for 20 mm aggregate, medium workability → ≈185–200 kg/m³. Water content adjusted for admixtures. Then cement = water/w-c ratio. Fine aggregate fraction from zone and volumetric method. Mix proportioned as 1:fa:ca (cement:fine agg:coarse agg).
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