Performance Evaluation of Recycled Asphalt Aggregate with Styrene Butadiene Rubber (SBR) Latex

Abstract

When it comes to highways and the building sector, aggregate is essential. In this study, recycled asphalt aggregate from wearing coarse asphalt pavement were used and designed it for binder coarse to boost the aggregate's strength. Bitumen, SBR latex, and asphalt mix aggregate are the primary components used in the study. Bitumen contents of 0%, 5%, 10%, and 15% of SBR latex were used. The Los Angles abrasion test, sieve analysis, absorption, vacuum-powered desiccator, centrifuge extract, and marshal stability test were the principal experiments conducted in this investigation. It has been determined through experimentation that Gmb begins to increase at 0 to 10% SBR before starting to decrease. Additionally, stability begins to increase between 0 and 10% SBR before declining between 10 and 15%. As the SBR % increases, the void ratio decreases. While normal aggregate flow value is less than recycled asphalt aggregate with SBR, flow value increases as SBR percentage increases. It was discovered that the optimum SBR is 10%, offering the highest level of flow and stability.