SC Marine Practice Questions - South Carolina Marine Contractor Examination Exam

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Stockpiled fine aggregate for a site-batched cap is wetter than the saturated-surface-dry condition used in the mixture design. If the batcher does not correct for that free moisture, what happens to the concrete?

The w/cm drops and slump decreases Extra free water enters the mixture, raising w/cm and slump and lowering strength and durability The cement sack weight changes from 94 lb to 80 lb Air content is automatically held at 1 percent

Correct Answer:

Extra free water enters the mixture, raising w/cm and slump and lowering strength and durability

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