Investigation of Elevated Temperature on Concrete with GGBFS

Ground granulated blast furnace slag (GGBFS) has been widely utilized as ingredients in concrete due to the advantages of economic, technical and environmental benefits of this material. This paper deals with the effects of elevated temperatures on properties of concrete made with ground granulated blast furnace slag (GGBFS) with replacement ratios of 20%, 40% and 60% by weight of cement. The concrete specimens were subjected to different elevated temperatures from 200�C to 1200�C. Afterward, the residual compressive strength, split tensile strength and the flexural strength of concrete were determined. For this purpose cube, cylindrical and beam Specimens of size (150 x 150 x 150 mm), (150 x 300 mm) and (100 x100 x500 mm) were made. This investigation developed some important data on the properties of concrete exposed to elevated temperatures. Test results shows that at elevated temperature 20% Ground granulated blast furnace slag +1% steel fibre found suitable combination as compared with the other combinations.