USE OF WASTED COCONUT SHELL CHARCOAL AS A FILLER FOR WEARING COURSE OF ROAD PAVEMENT

摘要

For improvement of pavement of road, the use of asphalt material and its mixture can be used to enhance their durability and performance. The Stone Mix asphalt is gap- graded mixture consisting of Stone as Coarse aggregate, different binders can be used (natural or artificial) as stabilizers. For minimizing the cost and increasing the efficiency of roads, many different alternatives can be used for improvement by using different waste materials as fillers among them like Coconut Shell Charcoal is one of them. The main objective of the present invention is to compare the results obtained by using fillers like Stone dust with Coconut Shell Charcoal. The properties that Coconut Shell Charcoal possesses are resistance to crushing, absorption, surface moisture, grading, resistance to freezing, light weight, heating and synthetic resin glues which is most important for pavement of roads. From that we can establish an appropriate combination so that it can be useful as a substitute as a filler for improving the quality and durability of pavement of roads. The aggregate gradation was decided as per IRC-SP-79 specification for Stone Mastic Asphalt or Stone Matrix Asphalt Mix. The Marshall Stability Test was conducted for the determination of optimum bitumen content and also for comparison of different fillers. From the study it is concluded that coconut shell charcoal can be used as a substitute for filler as it satisfies all the criteria to be used as filler.