Experimental Study on Partial Replacement of Cement with Fly Ash and Coarse Aggregate with Sea Shells

As there is a rapid development in and around . Infrastructure was developing day by day . There by we can see all type of construction around us taking in to the focus, to reduce the cost we need to implement new techniques and partial replacement of materials. Concrete is a composite material consisting mainly of cement, fine aggregate, coarse aggregate , water. The partial replacement is done in order to reduce the cement content and cost of materials. In this project , we present an experimental study on partial replacement of sea shells and fly ash with coarse aggregate and cement. This will be studied on workability, compressive strength, flexural strength, and split tensile strength at 7days, 14days and 28 days taken at room temperature of M30 concrete with partial replacements of cement by fly ash 5% ,10% and 15% and partial replacement of sea shells with coarse aggregate by 10% ,20% and 30%. The obtained results are compared with conventional concrete