Strength and Durability Behaviour of Nano Silica on High Performance Concrete

Nanosilica is a fine convergent material of 10-9 m size. Due to its fineness, stiffness gets increased and cracks get reduced. As Nano silica is fine, the mechanical strength will be increased and the durability will also be increased. Nano silica will reduce the pores compared to nominal concrete specimens. In this to study strength and durability behavior of M50 High Performance Concrete with Nano silica as admixture partially replacing cement by 0%, 5%, 10%, 15%, 20%. Specimens are cured for 14 and 28 days respectively. In standard environment, after this curing period a test to analyze the strength and durability as carried out. The strength and durability start shown in increasing trend with increase in the quantity of Nano silica. The Nano silica addition reduces the pore amount and makes the concrete denser in micro structure level, which in turn increases the strength and durability.