NV C-5 Concrete Practice Questions - Nevada C-5 Concrete Contractor Examination Exam

A January footing pour in northern Nevada finds the trench bottom frozen 2 inches deep. What is the correct action?

Remove the frozen soil and ice and place on a thawed, stable bottom, or thaw and recompact as specified Place the concrete; hydration will thaw the soil Cover the ice with a vapor retarder and pour Add extra calcium chloride to the mix and pour immediately

Correct Answer:

Remove the frozen soil and ice and place on a thawed, stable bottom, or thaw and recompact as specified

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