Performance Improvement Studies of Cement with GGBS, Metakaolin and Coarse Aggregate with Various Types of Seashells

Abstract

Concrete is the most extensively used construction material around the world and its properties have been changing technological advancements. Varieties of concrete have been developed to enhance the different properties of concrete. An investigation into the potential use of partial replacement of mineral admixture in concrete-strength has been carried out. The engineering properties of fresh and hardened concrete are obtained by conducting tests on the slump, and compressive strength at 7 and 28 days of the curing period, in this research partial replacement of cement with 10% metakaolin and GGBS (Ground Granulated Blast-furnace Slag). Also, Coarse aggregate was replaced with 10% and 20% of different seashells like clam, gastropod, and cockle sea shells in the concrete. The compressive strength of concrete made with MK-GGBS has been compared with concrete-strength i.e.; M20 grade of concrete. It has been concluded that the strength development of Sea shell concrete blended with metakaolin and GGBS was enhanced. It was found that a 10% replacement of metakaolin and a 10% replacement of GGBS appeared to be the optimum replacement which exhibited more strength. This investigation has proved that the 10%MK and 10% GGBS concrete can be used as structural concrete as a suitable replacement.