ABSTRACT
Normal strength [NSC] and high-performance concretes [HPC] are being used extensively in the construction of structures that might be subjected to elevated temperatures. The behaviour of concrete structures at elevated temperatures is of significant importance in predicting the safety of structures in response to certain accidents or particular service conditions. This paper deals with the mechanical properties of concrete made with ground granulated blast furnace slag [GGBFS] subjected to temperatures up to 350[degree]C. For this purpose, normal concrete having com-pressive strength of 34 MPa was designed using GGBFS as partial replacement of cement. Cylindrical specimens [150x300 mm] were made and subjected to temperatures of 100, 200 and 350[degree]C. Measurements were taken for mass loss, compressive strength, splitting tensile strength, and modulus of elasticity. This investigation developed some important data on the properties of concrete exposed to elevated temperatures up to 350[degree]C.