THE MECHANICAL BEHAVIOR OF FIBER REINFORCED HIGH PERFORMANCE SELF COMPACTED CONCRETE AT HIGH TEMPERATURES | ||
| ERJ. Engineering Research Journal | ||
| Article 10, Volume 34, Issue 3, July 2011, Pages 293-301 PDF (300.78 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/erjm.2011.67283 | ||
| Authors | ||
| A. A. M. Badawy1; M. H. Seleem1; A. E. K. Gabal1; A. M. El shihy2 | ||
| 1Materials Engineering Dept., Faculty of Engineering, Zagazig, Egypt | ||
| 2Structural Engineering Dept., Faculty of Engineering, Zagazig, Egypt | ||
| Abstract | ||
| In this paper, an experimental work was carried out to study the effect of high temperatures on the strength of high-performance self compacting concrete (HPSCC). Four concrete mixes were investigated. The first mix represented HPSCC without fibers. The second mix represented HPSCC including steel fibers. The third mix represented HPSCC including steel and micro-polypropylene fibers. The fourth mix represented HPSCC including steel, polypropylene and polyolefin fibers. Compressive, tensile and flexural strengths were measured at room temperature (RT) and after exposure to high temperatures of 200oC, 400oC, 600oC and 750oC for 2 hours. The residual unstressed test method was followed. Microscopic examination was performed on concrete samples from the four mixes at RT and after exposure to high temperatures. The results showed that incorporating hybrid fibers seems to be a promising way to enhance the resistance of HPSCC to thermally induced explosive spalling and increase the residual strengths. | ||
| Keywords | ||
| High-performance concrete; Self compacted concrete; Residual strengths; Hybrid Fibers; High temperatures | ||
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