Experimental investigation of pumice stone as coarse aggregate in concrete

In this present investigation composite modern construction material is developed and tested. The material chosen to develop a construction material is concrete. The range of material used in the concrete is cement, fine aggregate, coarse aggregate and water to make cement reactivate. In the composition of concrete major portion is occupied by fine and coarse aggregate. The coarse aggregate is replaced by Pumice stone in the following proportions like 5%,10% And 15%. The mechanical property of concrete specimen is determined by testing the specimen. The test results specify the optimum percentage of pumice Stone is 15% that can be used as replacement for coarse aggregate. The further investigation of developing a modern construction material is composite material. The material chosen to develop a composite material is steel and concrete. The steel is available in two kinds hot rolled steel and cold formed steel. In this investigation cold formed steel in tubular section will be used. The phase of developing the composite material will be done as a second phase of investigation.