Omisande Lawrence A. And Soneye Ibrahim O.

The rapid development of the population has led to a constant increase in industrial waste, which contaminates the environment. The amount that would need to be disposed of might be greatly reduced if industrial waste could be used to make concrete. Waste materials can be used as aggregate or as a cement substitute in cement concrete technology in a variety of ways. As a result, glass powder (GP) was used as an additive at 2% by cement weight in concrete with a water-cement ratio of 0.5, and Waste marble dust (WMD) was evaluated as a partial cement replacement at 0%, 5%, 10%, 15%, 20%, 25%, and 30% replacement levels. When 5% WMD was used as a cement substitute, concrete's compressive strength rose in comparison to the control mix, however adding more than 5% of WMP had the opposite effect. The pattern of split tensile strength was comparable to that of compressive strength. Up to 5% of WMD can be added to cylinders to increase their split tensile strength; after that, the strength tends to decrease as more WMD is applied. By substituting GP and WMD for up to 5% of the cement in a concrete mix, the mechanical properties of concrete can be improved. Keywords: Compressive strength, Concrete, Glass powder, Marble dust, Workability0150