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AASHTO PP 93
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AASHTO PP 93
AASHTO PP 93 2018 Edition, 2018 Standard Practice for Asphalt Tack Coat DesignMore info
Description / Abstract:
This standard determines an application rate for emulsified asphalt or performance-graded (PG) asphalt binder for tack coats. A tack coat is the application of an emulsified asphalt or performance-graded (PG) asphalt binder, to an existing pavement surface just prior to placement of a pavement overlay course.
The tack coat is used to ensure a good bond between an existing asphalt or concrete pavement and a pavement overlay course, between multiple pavement lifts of a structural pavement, and at any vertical surfaces to which a new pavement layer will be placed adjacent, such as curbs, gutters, utilities, and construction joints.
The tack coat is used to ensure a good bond between an existing asphalt or concrete pavement and a pavement overlay course, between multiple pavement lifts of a structural pavement, and at any vertical surfaces to which a new pavement layer will be placed adjacent, such as curbs, gutters, utilities, and construction joints.