SCC CONTAINING POZZOLANIC MATERIALS AS FILLER REPLACEMENT AT ELEVATED TEMPERATURES

Few investigations have been reported on the properties of Self-Compacting Concrete (SCC) when it is exposed to elevated temperatures; because it is commonly understood that concrete can resist very well against elevated temperatures. Even so, it's necessary to evaluate all structures after they exposed to elevated temperatures. Mechanical properties of SCC containing two types of Pozzolans (Silica Fume and Pumice) as filler replacement at elevated temperatures were experimentally investigated in this paper. At the age of 28 days, the specimens were placed in an electrical furnace and heating was applied up to the maximum temperatures of 200, 450, 600 and 800°C 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 results show that concretes without Silica Fume and Pumice as a replacement for filler show slightly better performance in terms of lower strength loss.

کلیدواژه ها:

SCC ، pozzolanic materials ، elevated temperatures ، mechanical properties ، filler