Partial Replacement of Stone Dust with Coconut Shell Charcoal Powder in Flexible Pavement
Waste materials are used as an alternative to mineral filler, for reducing cost and increasing the efficiency of roads. Some of the waste materials are coconut shell charcoal ash, iron steel slag, scrap tire, plastic waste and fly ash. Among those coconut shell charcoal powder is referred as study. Coconut shell contributes solid waste approximately 1.2 million tonnes in India, these coconut shells are generally disposed out and burnt, and these are locally available especially in southern India. In this paper composition of bituminous concrete, Grade 1 for surface course was implemented. Here coconut shell charcoal powder was partially replaced with stone dust at 2%, 4%, 6%, 8% and 10% by the weight of aggregates, the bitumen content varied as 4%, 4.5% and 5 %. The performance of stone dust and coconut shell charcoal powder in bituminous concrete mix (BC) was tested by Marshall Stability test. The optimum binder content obtained at 4.33%. From the results we have observed that coconut shell charcoal (CSC) powder can be used as a partial replacement of stone dust in surface course.