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road millings used for paths sub base

For HMA pavements the graded subgrade or the top granular base layer may be prepared with a primecoat if necessary A primecoat is a sprayed application of a cutback or emulsion asphalt applied to the surface of untreated subgrade or base layers Asphalt Institute 2001 2 Primecoats have three purposes Asphalt Institute 2001 2

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