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

Shatnawi, Shakir; Pais, Jorge; Minhoto, Manuel

http://hdl.handle.net/10198/6588

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Authors

Shatnawi, Shakir

Pais, Jorge

Minhoto, Manuel

Abstract(s)

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 SAMI-R are effective in minimizing reflective cracking distress and in extending pavement life.

Keywords

Interlayers SAMI-R ARAM-I Asphalt rubber Pavement preservation Rehabilitation Overlays Cape seals reflective cracking

URI

http://hdl.handle.net/10198/6588

Citation

Shatnawi, Shakir; Pais, Jorge; Minhoto, Manuel (2011). Asphalt rubber interlayer benefits on reflective crack retardation of flexible pavement overlays. In Southern African Transport Conference 2011. Pretoria, South Africa.