Asphalt rubber interplayer benefits on reflective crack retardation of flexible pavement overlays

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Authors

Shatnawi, Shakir
Pais, Jorge
Minhoto, Manuel

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Publisher

Document Transformation Technologies

Abstract

Paper presented at the 30th Annual Southern African Transport Conference 11-14 July 2011 "Africa on the Move", CSIR International Convention Centre, Pretoria, South Africa.
This paper provides an overview of the asphalt rubber interlayer benefits on reflective crack retardation in flexible pavement preservation and rehabilitation strategies. These interlayers are known in California as asphalt rubber absorbing membrane interlayers (SAMI-R) or as asphalt rubber aggregate membrane interlayers (ARAM-I) chip seals. These interlayers have been used successfully as part of cape seals and as part of an overlay system. The paper focuses on the performance in terms of field project reviews, laboratory performance tests and finite element analysis. The paper concluded that SAMIR are effective in minimizing reflective cracking distress and in extending pavement life.

Description

This paper was transferred from the original CD ROM created for this conference. The material was published using Adobe Acrobat 10.1.0 Technology. The original CD ROM was produced by Document Transformation Technologies Postal Address: PO Box 560 Irene 0062 South Africa. Tel.: +27 12 667 2074 Fax: +27 12 667 2766 E-mail: nigel@doctech URL: http://www.doctech.co.za

Keywords

Interlayers, Asphalt rubber, Pavement preservation, Rehabilitation, Overlays, Cape seals, Reflective cracking

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Citation

Shatnawi,S, Pais, J & Minthoto, M 2011, 'Asphalt rubber interplayer benefits on reflective crack retardation of flexible pavement overlays', Paper presented to the 30th Annual Southern African Transport Conference, South Africa, 11-14 July. pp. 553-562