Performance evaluation of semi rigid pavement mix

Abstract

Semi rigid pavement is a composite pavement, in which porous bituminous mix with 20–30% voids are filled with cementious grout. In recent years performance of semi rigid pavement has drawn attention to researchers. The research problem in this project mainly focus on selection of aggregate gradations and mechanical performance of semi rigid pavement mix. The research contents included 3 adopted gradation and acceptable proportions of cementious grout, Strength properties were carried such as compressive, flexural, indirect tensile strength and performance evaluation by rutting and fatigue for 1 and 28 days with different binder content. The investigations showed that selected ASTM gradation with 4.5% bitumen content has better strength properties and fatigue life. The permanent deformation of ASTM gradation shows slight variation compared to New Zealand gradation. The selected gradations mechanical properties and performance characteristics met standards of semi rigid pavement, so suggested that semi rigid pavement can be an alternative pavement.