Study on Partial Replacement of Aggregate by Pumice Stone in Cement Concrete

Abstract

Construction activities have increased phenomenally for the past two decades. With these construction activities going up, we are falling short of the construction materials, especially aggregates. So, finding an alternate resource is the need of our project. In concrete production aggregate is the cheaper material as compared to cement and maximum economy is obtained by using as much aggregate as possible. Aggregates also improve the volume stability and the durability of the resulting concrete. Light weight concrete has become more popular in recent years owing to the tremendous advantages it offers over the conventional concrete. Even Light concrete but at the same time strong enough to be used for the structural purpose. The present study deals with natural light weight pumice aggregate. The study aims at finding out the sustainability of pumice stone as a construction material, its cost effectiveness and the reduction in density produced by using it as a replacement of coarse aggregate partially in concrete. The research work mainly consist of two parts. In the first part, trial mixes were conducted for the conventional concrete M20, M25 and M30. In the second part, partial replacement of pumice stone with concrete with certain percentages of 10%, 20% and 30%.  The results after the test are compared to the IS code requirement.