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Computers and Concrete
  Volume 4, Number 1, February 2007, pages 19-32
DOI: http://dx.doi.org/10.12989/cac.2007.4.1.019
 


Tension and impact behaviors of new type fiber reinforced concrete
Zongcai Deng and Jianhui Li

 
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.
 
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School of Civil and Architecture Engineering, Beijing University of Technology, Beijing 100022, P.R. China
 

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