DURABILITY STUDIES ON THE SLAG BASED GEOPOLYMER CONCRETE STRENGTHENED WITH STEEL FIBRES

The curing method doesn't affect the strength of the concrete but the performance of the concrete in durability property was improved. The specimens cured by bitumen-based and coal tar epoxy was shown the better durability of the concrete [3]. The solution having the pH value of 4 and 7 will affect the strength of the concrete with minor weight loss. The dissolution of gel in geopolymer was noted in the microscopic/spectroscopic analysis. The presences of heavy metals in the MT-based geopolymer have the tendency of leaching when geopolymer bricks are immersed in the solution [4]. The significant modification was because of the cations to form a final structural product. The inorganic foams in aqueous media for the durability and exposed to liberation of kinetic are. The presence of alkaline element, amorphous silica and M2Si2O5 (M = K+, Na+) in the porous geometrical networks [5]. The presence of Na2SO4 activated slag has a better resistance in the elevated temperature up to 600°C. When the temperature increases pH value of concrete will decreased. For the protection of the reinforcement in the concrete it has to maintain the higher pH value in concrete [6]. The significant modification will in the concrete depending upon the size of the specimen and size of aggregate when under the elevated temperature of 800°C. The loss in strength will also in the concrete because of the rearrangement of the matrix in the concrete due to the temperature [7].