Volume : 2, Issue : 12, December - 2013

Effects of Magnesium Sulphate in Mixing and Curing Water on Strength of High–Performance Metakaolin Concrete

E. Arunakanthi, H. Sudarsana Rao, I. V. Ramanareddy

Abstract :

This paper presents the results of an experimental investigation carried out to study the effect of aggressive chemical environment on High performance concrete with metakaolin in which Ordinary Portland cement is partially replaced by 20% of metakaolin by weight and aggressive chemical environment is simulated by subjecting the concrete to different concentrations of Magnesium sulphate (MgSO4) in deionised water during mixing and curing. Compressive strengths and split tensile strengths were determined at 7, 28 and 90 days. The results indicate that the compressive strength and split tensile strength decrease with the decrease in concentration of Magnesium sulphate when compared with concrete without Magnesium sulphate in mixing and curing water.