Bond strength in indirect tensile and compressive strength of fire damaged concretes

Abstract

The aims of this study are to investigate the compressive strength and bond strength at fire damaged concrete. The design strength of normal concrete is 30 MPa according to BS 1881. There were 12 sample of 100 x 100 x 100mm cube and 12 samples 100mm in diameter and 200mm high of cylinder were prepared. The samples were heated in electrical furnace at 200 °C, 400 °C, and 600 °C. After cooled down to room temperature, the cube samples underwent compressive strength according to ASTM C39 and cylinder samples underwent splitting tensile test according ASTM C496. It was found that the bonding strength and compressive strength of the concrete decrease as the temperature increases.