Tiêu chuẩn quốc tế

• Số hiệu / Standard Number: AASHTO PP 93:2018
• Năm ban hành / Publication date: 2018
• Tình trạng / Status: A - Còn hiệu lực
• Tên tiếng Anh / Title in English: Standard Practice for Asphalt Tack Coat Design
• Số trang / Page: 5

Phạm vi áp dụng / Scope of standard

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.