Abstract

Abstract: Importance in coal ash produced from thermal power plants as a substitute for conventional construction material has increased considerably in recent years. The utilization of coal ash not only solves a waste disposal problem but also provides an economic construction material. Very little has been developed on the productive use of both bottom ash and fly ash, primarily because of the lack of information on properties on this material. This work assesses those properties of bottom ash likely to affect its use in highway fill and pavement construction. Experimental investigations have been carried out forbottom ash which is collected from thermal plants. Physical properties such as appearance, grain size distribution and specific gravity of both ashes were also studied in various existing systems. The assessment of cost effective performance like cost evaluation for entire work. To evaluate potential highway construction uses, the test results were compared with those of representative granular materials and appropriate existing specifications. The study includes the replacement of bitumen withbottom ash at some percentages. The Proportion of the mix taken was of Bottom ash 8%, 10% and 12% and compared with cost effective scenario for conventional bitumen and bitumen with bottom ash road construction method.