Investigation on Mechanical Properties of Concrete by Partial Replacement of Cement with Waste Glass Powder and Fly Ash

Concrete is the most versatile material used as construction material all over the world. Concrete is composite material formed out of cement, aggregatesand water. The emission of carbon dioxide gas in the production of cement causes enormous damage to the environment. It is estimated that about 7 percent of carbon dioxide gas is evolved from cement industries to atmosphere all over the world. Use of various combinations of admixtures as partial replacement of cement could be significant step towards the development of sustainable, eco-friendly and economical construction material. The present study focus on the production of such eco-friendly material by employing waste glass powder and fly ash in concrete as a partial replacement of port land cement. In this research work the mixture of waste glass powder and fly ash are used in concrete as a partial cement replacement, and its effect upon concrete strength are studied. In this research study, the ordinary Portland cement (Grade 53) is partially replaced by waste glass powder at various proportions like 10%, 15%, 20% and 25% respectively and fly ash at a constant proportion of 5% by weight of cement. A sample of normal concrete is prepared and is compared with the various samples containing different percentages of mixture of waste glass powder and fly ash as a partial replacement of cement in concrete. The tests conducted are compressive strength, flexural strength and split tensile strength of concrete for both conventional concrete and concrete with admixtures and are compared at 7 days and 28 days of curing. The optimum amount of admixtures required to attain higher strength economically is evaluated based on tests conducted on engineering properties of concrete