Effects of Waste Powder, Fine and Coarse Marble Aggregates on Concrete Compressive Strength

The use of marble wastes in concrete mixtures, causing air and water pollution, has been promoted the academic practical spheres construction industry. Although effects various forms (powder, fine, coarse mixed) this waste on compressive strength subject to a decent number studies literature, difficulties reaching specific conclusions effect each test parameter constitute major restraint for proliferation Most these are far from underscoring all parameters affecting strength. Due urgent need literature comprehensive mixtures with wastes, results axial compression tests total 429 aggregates were compiled by paying special attention reporting variables (form content water–cement ratio, cement content, proportion fine aggregates) In context, multivariate regression analyses carried out existing results. These yielded relationships between change every form aggregate). study indicated that independent (as powder, aggregate or aggregate), replacements up 50% can yield significant changes addition, analytical estimates developed equations exhibited high correlation (a least r value 0.91) experimental previous studies, yielding rather low error values (RMSE is 5.06 MPa at max). For reason, consistently predict varying amounts as well other variables.