SC Marine Practice Questions - South Carolina Marine Contractor Examination Exam

Why must concrete not be dumped freely through a column of water when building a marine seal or underwater footing?

Water makes cement set faster, which is always desirable The mixture segregates and the cement washes out, leaving a weak, honeycombed deposit OSHA forbids all concrete on barges Seawater converts all concrete into timber

Correct Answer:

The mixture segregates and the cement washes out, leaving a weak, honeycombed deposit

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