3. (a) Fine aggregate is batched in wet moisture state and had the batch weight of 40 kg. If the moisture content of the fine aggregate is 6% and the absorption capacity is 2%, determine the free water content in the aggregate. [Ans: 1.51 kg] (b) Coarse aggregate is batched in air-dry state and had the batch weigh of 80 kg. If the moisture content of the coarse aggregate is 1% and the absorption capacity is 1.5%, determine the free water required (effective absorption) to bring the aggregate to saturated surface dry condition (SSD) [Ans: 0.396 kg] (c) It the fine aggregate is batched (40 kg) in wet moisture state and coarse aggregate is batched (80 kg) air-dry state (as given in part (a) & (b)), determine the mixing water required if the free water cement ratio is 0.50, and the batch weight of cement is 20 kg. [Ans: 8.9 kg]
3. (a) Fine aggregate is batched in wet moisture state and had the batch weight of 40 kg.
If the moisture content of the fine aggregate is 6% and the absorption capacity is 2%,
determine the free water content in the aggregate. [Ans: 1.51 kg]
(b) Coarse aggregate is batched in air-dry state and had the batch weigh of 80 kg. If
the moisture content of the coarse aggregate is 1% and the absorption capacity is
1.5%, determine the free water required (effective absorption) to bring the aggregate
to saturated surface dry condition (SSD) [Ans: 0.396 kg]
(c) It the fine aggregate is batched (40 kg) in wet moisture state and coarse aggregate
is batched (80 kg) air-dry state (as given in part (a) & (b)), determine the mixing
water required if the free water cement ratio is 0.50, and the batch weight of cement is
20 kg. [Ans: 8.9 kg]
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