Study on Strength and Durability Properties of Concrete with Metakaolin

Author(s): R. Dharmaraj, G. Iyappan

Abstract: Metakaolin is a revolutionary artificial pozzolana admixture obtained from thermally activated ordinary clay and kaolinitic clay which greatly enhances the properties of ordinary concrete and become the central to the research in the making of special concrete. The overall objective of the present study is to study the effect of adding Metakaolin in concrete on its performance and its durability. For this Mix proportions of OPC concrete for M40 by IS method were determined. The mix proportion with partial replacement such as 0%, 5%, 10%, 15% and 20% of metakaolin with OPC were calculated.  The concrete specimens such as cubes for M40 grade concrete were prepared and cured the specimens for 28 days. The compressive strength of concrete increased when cement is replaced by Metakaolin for M40 grade of concrete.  The split tensile strength of concrete is increased when cement is replaced with Metakaolin. The flexural strength of concrete is also increased when the cement is replaced by Metakaolin.