This thesis investigates the properties, benefits, and challenges associated with the use of Pumice aggregate in green concrete.Through experimental studies, this research aims to evaluate the mechanical and durability properties of green concrete and compare themwith conventional concrete. In this thesis work natural coarse aggregate is replaced from Pumice coarse aggregate by varying differentpercentage (50%, 80%, 100%) by weight of natural coarse aggregate. Experimental investigations, including sample preparation,compressive strength test, flexural strength test & split tensile strength test are conducted to evaluate the performance of Pumice coarseaggregate modified concrete.Keywords: - Pumice Coarse Aggregate, Compressive Strength Test, Flexural Strength Test, Mix Design, IS 10262-2009