Investigation on Mechanical properties of High strength Light weight concrete with Partial Replacement of Aggregate and Cement with Pumice and Metakaoline

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. In this research strength characteristic of M40 grade concrete is tested in two ways. In one way the aggregate is partially replaced with pumice aggregate (LWPC) with different percentages like 20%, 40%, 60% 80% and 100%. In another way aggregate is partially replaced pumice along with 20% common partial replacement (LWPC+20% MK) of cement with metakaoline powder in same percentages.