Mechanical properties ofHigh Strength Alkali Activated Concrete

Abstract

The cement production which causes environmental pollution cannot be eliminated completely but its use can be reduced by utilizing other cementing materials. The production of High strength Alkali Activated Concrete (HSAAC)  with fly ash consume less energy and this technology has the ability to minimize the emissions by 80%. For the present work, a High strength Alkali Activated Concrete prepared from fly ash and Ground granulated blast slag (ggbs) is used by replacing cement to produce M60 Grade concrete. The experimental program consists of two main stages. In the first stage, mix design was done to prepare M60 Grade concrete for both High strengthTraditionally vibrated concrete (HSTVC) and High strength Alkali Activated Concrete. In the second stage, strength parameters of the concretes were assessed by testing cubes (for evaluating the compressive strength), prisms (for flexural strength) and cylinders (for split tensile strength) using those two concrete types.. From this study it was observed that the High strength Alkali Activated Concrete with fly ash showed higher compressive strength and lower tensile strength when compared with High strength Traditionally vibrated concrete of same grade..