An Experimental Study on Effect of Replacing Natural Sand by Quarry Dust and Saw Dust on Properties of Concrete

Construction industry is one of the contributing fator to the environmental crisis; the use of waste materials or industrial by-products from different industries as an alternative to conventional concrete materials would reduce this issue. The use of this material will contribute to sustainability in the building industry and protect natural resources. It can replace traditional concrete materials and use it. This study aims primarily to examine sand replacement to optimize the benefit of industrial by-products and other waste materials. Day by day, demand for sand is growing. Sand mining increases gradually as needed, with the impact from the mining of the river, water quality, and ecological effect generally affected. Therefore, it is very important to consider Sand Alternative in view of the need for sand in the future. Lack of sand affects construction work directly. The alternate material such as quarry dust and saw dust may be used in concrete to meet the need of fine aggregates. Quarry dust comes from the crushing of rocks, while sawdust refers to the fine size, powdery waste formed by sawing of wood. In this study, traditional mix 1:2.32:2.82 (M25) with water to binder ratio is maintained as 0.49 was used in this present study. Here the natural sand is replaced partly here by quarry dust (QD) and sawdust (SD) with different percentages i.e. is 50% of natural sand as constant and remaining 50% as the different proportions of Quarry dust and Saw dust. respectively by weight and effects of replacement on concrete is observed. The concrete was cast and their compressive, tensile strength and durability measured at 7, 14 and 28 days, respectively; the cubes of 150 x 150 x 150 mm, and the cylinders of 15 cm of diameter and of 30 cm of height were cast. The incorporation of 0.5 percent glass fibers into concrete as a mixture will increase the compressive and the tensile strength of the concrete dramatically.