Abhishek Kumar Jha

Ajinkya Ingale

Mukul Yambal

Abstract—Pavement wearing surfaces have to take heavy loads (due to ever-increasing axle loads) resulting in early deterioration of pavement in terms of rutting. The Stone Mastic Asphalt (SMA) mixture is a gap-graded mix of rut-resistant asphalt. This asphalt mix proves to be expensive and thus, there is a need to find an alternative to expensive synthetic fibres. In this study, comparison of strength of pavement wearing coat made with SMA mixed with cellulose fibre, and SMA with low cost fibre was done. This study was done to evaluate the performance of SMA and SMA with low cost fibre in the mixture by laboratory tests. For both mixes, the aggregate gradation was taken as per the IRC SP 079 specification and the binder content was 5.25%, 5.5%. 5.75%, 6%, 6.25% by weight of Marshall mix. Fibres used were 0.3% by weight of the sample. Cement was used as filler and VG-30 grade bitumen was used as binder. It was observed that the stability and flow values of Stone Mastic Asphalt with jute fibres (SMA-JF) were comparable with conventional SMA, however, the construction cost of SMA-JF was lower.