The Thermal Effects on the Self-Compacting Concrete Beams Exposed to the Fire

Abstract

Self-Compacting concrete (SCC) is one of the most important technological developments in the construction material. Its use has increased significantly in recent years in the construction industry due to its high properties. though, the performance of fire-affected elements made of SCC mixture is primarily unknown. In this work, beams were produced of (SCC) in laboratory, and exposed to external fire at several reference time (30/60/90/120)min with two methods of cooling (subjectively, water), where three levels of response were selected and evaluated (thermal transferring progress, Spalling, surface microstructure), the results revealed that the damaged in the service loaded beam is interesting, corresponds to the characteristics of the cracks formed in the concrete section on bending zone which was photographically documented, and the progress of thermal transferring has a large values during (5-20) min in heating stage, and takes varies values (10-30%) at beam height where the curve been closer to linear.