EXPERIMENTAL STUDY INVESTIGATING IMPACT OF SULPHATE AND ACID ATTACK ON GLASS FIBRE CONCRETE

Abstract

In the era of urbanization & development more challenging and Critical structure are build all over the world. Now a day’s word is witness of lots of critical and harsh environment conditions. demand of construction in harsh environment condition are increasing day by day so that the serviceability and durability of concrete structure take a serious concern. Previous researches show that the durability of concrete is decreased when it comes in influenced of sulfuric acid and sulphate due to its alkaline nature. To overcome this problem Glass fibre are added to the concrete. In this experiment concrete mixers are prepared by different percentage of glass fibre. GFRC were obtained by thoroughly mixing the glass fibre inside the dry mix before addition of water by varying percentage of 0.0%, 0.5 %, 1.0 %, 1.5%, 2.0 % and 2.5 % respectively with respect to the total weight of cement. Eighteen number of cubes are prepared from each mix. All cube is immersed in water for the period of 28 days. In the first phase compressive strength test is conduct at 7 and 28 days. In second phase remaining cube is immersed in magnesium sulphate and sulfuric acid solution of 5 % v/v. loos in weight and Durability test were conduct at 30 day and 60 day for both solutions. This result is compared with conventional concrete mix. It concludes that the workability of concrete not much affected by addition of glass fibre. While the durability of concrete increased with addition of glass fibre. Optimum result is found at 1 % of glass fibre.