CHARACTERISITC STUDY OF NANOSILICA IN DURABILITY ON VARYING WATER-CEMENT RATIO

The purpose of this work is to describe the effect of durability aspect of Nano silica when added to concrete. The use of Nanosilica in concrete is to reduce the cement content in concrete mix since the design consumes almost the total cement production in the world. Nanotechnology is one of the most active research areas which has wide applications in almost all the fields. Researchers are focussing to improve the durability and sustainability of concrete by incorporating Nanosilica. This paper summarizes the effect of Nanosilica addition on compressive strength, chloride penetration test, electrical resistivity and carbonation resistance test in varying water-cement ratio of 0.65, 0.55 and 0.5 and NS in 0%, 0.5%, 1% and 1.5% by weight. The effect of certain NS dosage on compressive strength and durability properties for high strength concrete mix was different than low strength mixes