EXPERIMENTAL STUDIES ON STEEL FIBRE REINFORCED CONCRETE WITH MARBLE DUST PARTIAL REPLACEMENT OF CONCRETE

Abstract

There is growing interest in the construction of concrete pavements, due to its high strength, durability, better serviceability and overall economy in the long run. Present day construction cost is at its height with using basic materials like cement, coarse aggregates and fine aggregates. Leaving waste materials to nature specifically can bring about environmental issues. Therefore, reuse of waste materials has been emphasized. Industries produce lots of waste materials, which might be helpful in partial replacement of basic materials due to their composition and it can be proved economical. The concrete industry is always searching for supplementary material with the target of decreasing the solid waste disposal issue. As we know concrete is weak in tension so, to overcome this, steel fibers has been used. There are few reuse and recycling solutions for this industrial by-product, both in experimental phase and have useful applications. These mechanical wastes are dumped in the close-by areas and natural fruitfulness of the soil is ruined. The physical, mechanical & chemical properties of wastes are discussed. In this present study a study of strength and durability is carried out on M30 grade concrete by using marble dust and steel fibers. The cement is replaced with 0%MP+0%SF, 5%MP+0.5%SF, 10%MP+1%SF, 15%MP+1.5%SF, and 20%MP+2%SF. The compressive and split tensile strength of concrete is determined for 7 days, 14 days and 28 days curing with different percentages of marble powder and steel fibers, the durability of concrete is determined for curing the specimens for 90days in acid, alkaline and sulphate solutions.