SC Concrete Paving Practice Questions - South Carolina Concrete Paving Contractor Examination Exam

A cold joint in a concrete pavement pour occurs when:

The air temperature is below 40°F, even if placement is continuous Fresh concrete is placed against concrete that has already stiffened so the two lifts do not become monolithic Curing compound is applied on a cool night Dowel bars are greased on one end

Correct Answer:

Fresh concrete is placed against concrete that has already stiffened so the two lifts do not become monolithic

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