Study on Structural Behaviour of Normal Concrete and Scc Subjected To Elevated Temperature

Abstract

Cement concrete is a complex mixture of different materials, for which the properties may alter in different environmental conditions. The behaviour of concrete in fire depends on its mix proportions and constituents. The principle effects observed in the concrete due to elevated temperatures are loss in compressive strength, loss in weight (or) mass, change in colour and spalling of concrete. Due to these changes there is a great need of study in this region. The objective of this limited study was to provide an overview of the effects of elevated temperature on the behaviour of concrete. In meeting this objective, the effects of elevated temperature on the properties of normal concrete and self compacting concrete materials are summarized. The compressive strength was determined at different temperatures, thus providing scope of determining loss/gain in strength. In addition, modes of cooling, variation in different grades of concrete were studied. As the fire affected concrete cannot undergo destructive in practical situations, Non-destructive testing (NDT) methods, i.e., Rebound hammer test were also adopted and the results were co-related