The application of waste glass as partial replacement for cement in concrete

Construction and demolition activity has led to increased piling up of waste in the landfills of Malaysia, a developing country. Glass waste is among the generated waste as well. Other than that, the demand of cement, an important construction material has been increasing every year which led to increase in production of cement. Cement production is a significant source of global carbon dioxide (CO2) emissions. This paper looks at the possibility of glass waste usage as cement replacement in concrete mixture. The mechanical strength of the glass waste concrete was analyzed. The percentages used as a partial replacement, were 5%, 10%, 15%, 20% and 25%. The results of this study have proven that glass waste construction possesses a pozzolanic strength of 82.3% making it suitable pozzolanic material. The compressive strength, tensile strength, flexural strength and elastic modulus strength had shown 10% of glass waste replacement to be the optimum percentage that gives higher strength than the normal concrete strength