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About This Item

 

Full Description

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.

 

Document History

  1. AASHTO R 112-22


    Standard Practice for Asphalt Tack Coat Design

    • Most Recent
  2. AASHTO PP 93-18 (2020)

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    Standard Practice for Asphalt Tack Coat Design

    • Historical Version