Experimental investigations on the rut resistant surface layer with Inclusion of Marble Dust and Sisal Fibers

Abstract

Abstract Fibres are broadly used to redesign the execution of the bituminous blends. Marble dust is delivered as a waste by the forming of marble blocks. Marble dust is utilised as the replacement of filler, which is used in the midpoint gradation. In this paper, an investigation has been made to analyze the utilization of sisal fibres and marble dust to enhance the performance of asphalt concrete mix. The effects of inclusion of sisal fibre at a length of (5 mm) at five different percentages (0.1%, 0.2%, 0.3%, 0.4% and 0.5% by the weight of aggregates) and addition of marble dust as a filler at respected weights at different percentages. Optimum Bitumen Content (OBC) is based on Marshall Mix design with midpoint gradation. By Marshall Stability, we have calculated VMA, VFB, flow and air voids in the bituminous blends were researched and following tests were performed; indirect tensile strength (IDT), rutting characteristics of hot mix asphalt and Modified bituminous mix are identified and examined at OBC by using immersion type of wheel tracking device. The fibre length of 5 mm at a percentage of (0.3%) by weight of aggregate with an optimum bitumen content of 5.5% by weight of blend apparently provided better execution. Based on laboratory research, it is concluded that the sisal fibre Modified bituminous blend is a superior blend then the traditional hot mix asphalt as far as Marshall Properties, Indirect tensile strength, and rutting characteristics.