COMBINED EFFECT OF METAKAOLIN AND EGG SHELL POWDER ON THE PROPERTIES OF CONCRETE BY REPLACING SLIGHT AMOUNT OF CEMENT

The discussion in this paper is about the combined effect of metakaolin and eggs shell powder on the properties of concrete by replacing slight amount of cement. As metakaolin has tendency to increase durability of concrete by reducing the effect of alkali silica reaction at the same time some percentage of eggs shell may be used as a constituent in form of fine aggregate, which has tendency to reduce the dead load of the structure due to its very low density. In this research work five trials having different percentage of ESP& MK were done with opc (43grade) for concrete mix to analysis the properties of concrete in fresh and hardened stage. The performance of concrete was checked by partially replacing cement with Egg shells powder and metakaolin by various percentages viz 0%,2.5%,5%,7.5%,10%, 12.5% and 15% after different days of curing like compressive strength test (after 7 and 28 days), split tensile strength test (after 7 and 28 days) and flexural strength test (after 28 days), combined effect of Egg shell powder and Metakaolin at 10% gained the maximum compressive strength of 48.25N/mm2.And presence of ESP in concrete mix also enhanced flexural strength value to 7.19N/mm2, which is much better than normal mix concrete.