Mechanical Properties of Self-Compacting Concrete Containing Pumice at Elevated Temperatures

As the use of Self Compacting Concrete becomes common, the risk of exposing it to elevated temperatures increases. However, few investigations have been reported on the mechanical properties of SCC when it is exposed to elevated temperatures.Mechanical properties of SCC containing Pumice (P) at elevated temperatures up to 800°C were experimentally investigated in this paper. Four different mix designs, Traditional Concrete (TC), SCC and two other SCC mixtures containing pumice as a replacement for both cement and filler were produced. At the age of 28 days, the specimens were placed in an electrical furnace and heating was applied at the rate of 2.5 (°C/min) up to the desired temperature. Maximum temperatures of 200, 450, 600 and 800°C were maintained for 2 hr. Then, the specimens were allowed to be cooled in the furnace and subsequently tested for compressive strength, rebound hammer, ultrasonic pulse velocity and weight loss. The residual compressive strength of SCC mixture containing pumice as a filler replacement almost was higher than the other mixtures up to 800°C.