EFFECT OF SILICA AND TITANIUM DIOXIDE NANOCOMPOSITE ON PROPERTIES OF CONCRETE

Abstract

Concrete has been the most prominently used material for construction of various infrastructure’s, hence it’s composition has been widely experimented with, a relatively new addition has been the use of nano material, there have been a lot of studies about effect of incorporating nano materials such as nano silica and nano titanium dioxide in concrete, but there are lack of studies showing effect of adding both of these together in the same concrete mix.

In this dissertation study has been performed by adding nano silica and nano titanium dioxide to concrete of grade M-50 designed using PC based super plasticizer with one mix containing 0.5%(by weight of cement) of each of these two, another mix containing 1%(by weight of cement) of each of these two and the third mix containing 1.5%(by weight of cement) of each of these two, also an attempt has been made to keep the slump in a range of 75mm-100mm by adjusting super plasticizer and the effect of these addition has been studied in terms of gain of 7 days concrete compressive strength, 28 days concrete compressive strength, UPVT, rebound hammer, effect of 28 days chloride curing on compressive strength, effect of 28 days sulphate curing on compressive strength, effect of combined sulphate and chloride curing for 28 days on compressive strength and effect of elevated temperature(400○C) on compressive strength of concrete.