The Influence of Metakaolin on the Modulus of Elasticity of Concrete

Abstract

This Paper presents the effect of Metakaolin on the modulus of elasticity of concrete has been presented. Concrete is a vital ingredient in infrastructure development with its versatile and extensive applications. The grade of concrete considered in the present investigation is M60 mix. The cement is partially replaced by Metakaolin at different percentages such as 7.5, 10, 12.5, 15 and 17.5 by weight of cement. The modulus of elasticity is determined by testing of cylinders of size 150mm diameter and 300mm height at various percentages of Metakaolin after curing for 28 days. The modulus of elasticity is computed by taking initial tangent modulus for each percentage of Metakaolin from stress-strain plot obtained by subjecting the specimens to axial compression. Variation of Young’s modulus at different percentages of Metakaolin is compared with controlled concrete as 0% replacement of cement.