Performance of Stone Mastic Asphalt Pavements with the Usage of Carbon and Glass Fiber

This study investigates the performance of Stone Matrix Asphalt (SMA) by incorporating carbon and glass fibers and assessing their influence on the mix under varying aggregate sizes, based on Indian standards. The research compares the drain-down properties of SMA mixes at different fiber contents using VG-30 bitumen. Stability, flow, and volumetric characteristics are examined through the Marshall method to assess the effects of these fibers. Specimens with a constant fiber content were prepared with binder contents ranging from 5.5% to 7%, utilizing Superpave Gyratory Compaction. The results highlight the optimal fiber and bitumen content for improved performance in SMA mixes.