Characterization of Cement Grouted Semi-flexible Pavement

Abstract

This study over semi-flexible pavement (SFP) has been characterized in various stages. The first stage is about the gradation of aggregate for which six trials were made with the course and fine aggregate with three replicates to achieve void ratio between 30 and 70%. The required gradation has been considered for making bituminous aggregate skeleton in second stage with varying bitumen content between 3 and 6% to get stability, flow value and required air voids in skeleton of about 20–30% as per previous studies. In third stage, considering various properties such as flow value, drying shrinkage, grout strength and grouting ability cement grout has been prepared. Pouring of cement grout over bituminous aggregate skeleton under gravity action has been done in the final stage to reduce the final air voids in SFP between 6 and 8%, which has impart durability and strength properties.