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Computers and Concrete Volume 4, Number 1, February 2007 , pages 19-32 DOI: https://doi.org/10.12989/cac.2007.4.1.019 |
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Tension and impact behaviors of new type fiber reinforced concrete |
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Zongcai Deng and Jianhui Li
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| Abstract | ||
| This paper is concentrated on the behaviors of five different types of fiber reinforced concrete (FRC) in uniaxial tension and flexural impact. The complete stress-strain responses in tension were acquired through a systematic experimental program. It was found that the tensile peak strains of concrete with micro polyethylene (PEF) fiber are about 18-31% higher than that of matrix concrete, those for composite with macro polypropylene fiber is 40-83% higher than that of steel fiber reinforced concrete (SFRC). The fracture energy of composites with micro-fiber is 23-67% higher than that of matrix concrete; this for macro polypropylene fiber and steel fiber FRCs are about 150-210% and 270-320% larger than that of plain concrete respectively. Micro-fiber is more effective than macro-fiber for initial crack impact resistance; however, the failure impact resistance of macro-fiber is significantly larger than that of micro-fiber, especially macro-polypropylene-fiber. | ||
| Key Words | ||
| polypropylene fiber; polyethylene fiber; steel fiber; concrete; uniaxial tension; crack; complete stress-deformation curve; flexural impact behavior. | ||
| Address | ||
| School of Civil and Architecture Engineering, Beijing University of Technology, Beijing 100022, P.R. China | ||