Abstract
Abstract
In recent decades, the construction industry is facing a difficulty arising out of decline in the availability of natural resource material for the preparation of concrete due to depletion. An investigation is carried out on the reuse of waste slag as an alternative material to natural material in concrete production, satisfying relevant international standards. Electric Arc Furnace Slag (EAFS) is a material which is obtained from the steel industry during the production of steel from its raw ore. It can be used as both fine and coarse aggregate in concrete. This paper presents about the usage of EAFS in concrete preparation and results of some tests conducted on it. This study concentrates on 50% replacement of EAFS as coarse aggregate in concrete preparation. The mechanical properties of the EAFS is addressed. The compressive and split tensile strength is analysed for the age of 7, 14 and 28 days. The test results revealed that partial replacement of EAFS as coarse aggregate showed more or less similar results when compared to conventional concrete. Scanning Electron Microscopy (SEM) and X-Ray Diffraction (XRD) techniques are used to study topographic, crystallographic of material and chemical composition of slag and the corresponding results are included.