Effect Of Elevated Temperatures On The Properties Of Steel Fiber- Reinforced Self-Compacting Concrete

Vol.2 No. 4

Year: 2012

Issue: Sep-Nov

Title: Effect Of Elevated Temperatures On The Properties Of Steel Fiber- Reinforced Self-Compacting Concrete

Author Name: M.S. Shreenivas Reddy, P. Srinivasa Rao

Synopsis:

Mechanical and thermal properties of steel fiber-reinforced self- compacting concrete(SFR-SCC) subjected to elevated temperatures up to 600oC were experimentally investigated and reported in this paper. The variables considered in this study include grade of concrete (M35, M45, M55 and M65), fiber content (0, 0.5 and 1%), elevated temperatures (200oC, 400oC and 600oC) and period of exposure to the above temperatures (4hrs, 8hrs and 12hrs). Specimens were placed in an electric furnace and the heating was applied at the rate of five degree per minute until the desired temperature was reached. Specimens were then allowed to cool in the furnace and tested for loss in mass and compressive strength. Similar tests were also performed at room temperatures for the reference specimens. The experimental results show that the mass loss and strength loss does not exceed 10 and 50% respectively and also in case of fibreless specimens micro cracks were observed at 600oC.