Teclmkal Report Decwnentation Page . epo o. ec1p1en s a a og o. FHWAffX-94/1334-lF . 1 e an u 1 e PRIME COAT METHODS AND MATERIALS TO REPLACE CUTBACK ASPHALT e November 1994 7. Author(s) Christian A. Mantilla and Joe W. Button . er ormmg rgamza ion ame an ress Texas Transportation Institute The Texas A&M University System College Station, Texas 77843-3135 . ponsonng gency ame an ress · Texas Department of Transportation Research and Technology Transfer Office P. 0. Box 5080 Austin, Texas 78763-5080 A prime coat is the application of a suitable bituminous binder applied to a non-bituminous granular base as a preliminary treatment before the application of a bituminous surfacing. The purpose of this research is to establish practical applications of successful prime coats to replace cutback asphalt. An investigation was conducted in order to (I) examine the importance of the bond between the base and various types of surface courses, (2) explore materials and construction techniques to improve prime coat performance, (3) evaluate alternative prime materials in the laboratory, and (4) develop specialized test procedures for prime coats. Laboratory tests were developed to (I) measure the penetration of prime materials in a granular base, (2) measure the shear strength of the different alternatives and evaluate the importance of the prime coat in strengthening the interface between the asphalt layer and the granular base layer, and (3) evaluate the benefits of specific construction methods in providing additional stability to the pavement system. Field evaluations of the different alternatives were performed. End-to-end test pavements were constructed using different prime coat products and construction techniques. Construction and early performance of the different alternatives were monitored. . ey o s Prime Coat, Prime Material, Asphalt Pavement, Bituminous Pavements, Interface Shear Strength . is n u ion a emen No restrictions. This document is available to the public through NTIS: National Technical Information Service 5285 Port Royal Road Springfield, Virginia 22161 ;:: . 0. 0 156 Reproduction of completed page authorized
PRIME COAT METHODS AND MATERIALS TO REPLACE CUTBACK ASPHALT
Apr 26, 2023
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