NM CID GA-1 Practice Questions - New Mexico CID GA-1 Streets, Roads And Highways Examination Exam

On an NMDOT hot-mix asphalt overlay, what is the primary purpose of a tack coat?

To waterproof the existing pavement so water cannot enter the base To bond the existing surface to the new asphalt course To rejuvenate oxidized binder in the old pavement To prime a raw aggregate base before the first asphalt lift

Correct Answer:

To bond the existing surface to the new asphalt course

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