Laboratory Investigation of Stone Matrix Asphalt Using Bagasse Fiber

The development and use of asphalt materials and mixtures originated primarily in European countries and North America. Stone Matrix Asphalt (SMA) is a gap-graded mix known for its high content of coarse aggregates, elevated asphalt levels, and the inclusion of fiber additives as stabilizers. This study explores the engineering properties of SMA mixtures with and without the addition of non-conventional banana fiber as a stabilizing agent. Laboratory tests were conducted to evaluate the suitability of banana fiber by analyzing flow parameters, stability, and mechanical properties of the mixture. The aggregate gradation for the SMA mix was based on MoRTH specifications, and the binder content was varied from 4% to 7% by weight of the aggregate. The fiber content was maintained at 0.3% by weight of the aggregate, with cement used as a filler and 60/70 grade bitumen as the binder.