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Concrete made of cement is the most adaptive material for construction purpose. Design and Preparation of such a concrete mix with good strength and durability has been always the need of the day. Use of mineral admixture in concrete mix has made a remarkable achievement in development and design of high strength concrete. Among many mineral admixtures available, Metakaolin (MK) is a mineral admixture, whose potential is not yet fully tested and only limited studies have been carried out in India on the use of MK for the development of high strength concrete. MK is a supplementary cementations material derived from heat treatment of natural deposits of kaolin. MK shows high pozzolanic reactivity due to their amorphous structure and high surface area. In this present study Metakaolin is replaced with 0, 10, 15, 20, 25 and 30 % of cement to observe the compressive strength of M70 grade concrete. Conclusions are made from the various results and the discussions there on to identify the effect of partial replacement of cement by MK in the design concrete mix. The results conclude that, the use of Metakaolin Concrete (MKC) has improved the performance of concrete under various conditions

Influence of Metakaolin in High Strength Concrete of M70 Grade for Various Temperatures and Acidic Medium