Journal of the Korean Society of Environmental Restoration Technology (한국환경복원기술학회지)

The Korea Society of Environmental Restoration Technology (한국환경복원기술학회)
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Physical and Mechanical Properties of PP Fiber Reinforced Concrete for Binder Course in Landscape Paving

조경용 포장 중간층에 사용가능한 PP섬유 보강 콘크리트의 물리·역학적 특성연구

  • Jun, Hyung-Soon (Graduate school, of Sang Myoung University) ;
  • Lee, Jae-Keun (Dept. of Environmental Landscape Architecture, Sang Myoung University)
  • 전형순 (상명대학교 대학원 환경조경학과) ;
  • 이재근 (상명대학교 환경조경학과)
  • Received : 2012.07.27
  • Accepted : 2012.12.31
  • Published : 2013.02.28
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Abstract

The mechanical properties appeared at the concrete mixed with Polypropylene fiber($1kg/m^3$, $3kg/m^3$, $5kg/m^3$) are compared with normal concrete and wire mesh one and evaluated. Achieved slump test to search effect that PP fiber gets to workability, even if the mixing amount of fiber increases, confirmed that slump value is no change almost. The no difference can be caused by hard mixture, but because of the big softness of fiber there is no effect greatly up to PP fiber mixing amount $5kg/m^3$ even with soft mixture. Compressive strengths and flexural strengths of the concretes with PP fiber and without the fiber are appeared almost alike. If examine load resistance ability by PP fiber mixing amount increase, it could know that the increase of fiber mixing amount improves load resistance ability and the toughness index is increased. While normal concrete is broken at the same time with crack, fiber mixed concrete stand in flexure load continuously after crack occurrence. In compare with wire mesh embeded concrete, wire mesh mixed concrete stands in some degree in flexure load by wire mesh crack occurrence and the test piece was broken at the same time. But, it could know that the PP fiber mixed concrete resist continuously to flexure load in bigger displacement.

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References

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