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There is a substantial amount of misinformation concerning the function and proper use of prime. Prime is not glue-causing the base to adhere to the pavement is not its purpose. Prime's purpose is to protect the base from rain and light traffic, when the paving will be delayed.

A prime coat is an application of an asphalt cutback or emulsified asphalt to a prepared base. The base can be either a sub grade or a base rock. Prime functions as a protector from rain for both types of bases. A primecoat should not be confused with a tack coat. Tack is an a adhesive for gluing two asphalt layers together.

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15y ago

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