Abstract :
Concrete is an artificial material, which is made up of cement, fine aggregate, coarse aggregate and water. In this paper, an attempt has been made to replace part of cement by Ground Granulated Blast Furnace Slag (GGBS), Fly Ash (FA), Rice Husk Ash (RHA) and Silica Fume (SF) to improve the durability properties of concrete. One of the most requirements of concrete is that it should be durable under certain conditions of exposure. Deterioration can occur in various forms such as alkali- aggregate expansion, freeze-thaw expansion, salt scaling by de-icing salts, shrinkage, attack on the reinforcement due to carbonation, sulphate attack on exposure to ground water, sea water attack, and corrosion caused by salts. Addition of admixtures may control these effects. In this paper, suitable admixtures to improve the durability characteristics and the optimum percentage of replacement of cement by mineral admixtures with various proportions have been studied.
Keyword :
Fly Ash, Silica Fume, Rice Husk Ash, GGBS, Durability, Strength