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

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Before placing new concrete against a hardened construction joint, ACI 318-14 26.5.6 requires which surface preparation?

Paint the joint with form oil Clean the surface and remove laitance; intentionally roughen it when the documents require shear transfer Keep the joint dry and dusty Cover the joint with polyethylene and pour over it

Correct Answer:

Clean the surface and remove laitance; intentionally roughen it when the documents require shear transfer

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