Effect of Sodium Chloride on Silica Fume Based M30 Grade Concrete

This paper presents the effect of Sodium Chloride (NaCl) on Conventional Concrete (Silica Fume Based M30 Grade Concrete). The Silica Fume Based M30 Grade Concrete was prepared by adding NaCl concentrations of 0.5,2,4,6,8,10 and 12 g/l i n deionised water. In addition to this, control specimen was prepared with deionised water (without NaCl) for the purpose of co mpari son . The tensile strength and compressive strength were evaluated for 28 and 90 days. The results show that as NaCl concentration increases compressive strength of silica fume based M30 grade concrete increases as the concentration of NaCl goes up at both 28 and 90 days only up to some extent. But the increase in the concentrations of Nacl has detrimental effect on the setting time of concrete after certain increase in the NaCl concentrations. Compressive strengths and Split tensile strength of Conventional Concrete show increases when compared with controlled specimen. Keywords-Silica fume, NaCl , Initial and final setting time, Compressive strength, Split tensile Strength.