Computers and Concrete

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Tension and impact behaviors of new type fiber reinforced concrete

  • Deng, Zongcai (School of Civil and Architecture Engineering, Beijing University of Technology) ;
  • Li, Jianhui (School of Civil and Architecture Engineering, Beijing University of Technology)
  • Received : 2006.07.03
  • Accepted : 2007.01.22
  • Published : 2007.02.25
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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 microfiber, especially macro-polypropylene-fiber.

Keywords

Acknowledgement

Supported by : Natural Science Foundation of China

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