Journal of the Korea Concrete Institute (콘크리트학회논문집)

Korea Concrete Institute (한국콘크리트학회)
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Effect of Volume Fraction of Fibers on the Mechanical Properties of a Lightweight Aggregate Concrete Reinforced with Polypropylene Fibers

섬유 혼입률에 따른 섬유보강 경량골재 콘크리트의 역학적 특성

  • Lee, Haeng-Ki (Dept. of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology) ;
  • Song, Su-Yong (Dept. of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology)
  • 이행기 (한국과학기술원 건설 및 환경공학과) ;
  • 송수용 (한국과학기술원 건설 및 환경공학과)
  • Published : 2006.12.31
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Abstract

This paper presents results of an experimental study conducted to investigate the effect of volume fraction of fibers on the mechanical properties of a fiber-reinforced, lightweight aggregate concrete(FRLAC) that was produced without an autoclave process. The FRLAC enhanced the strength of lightweight, cellular concrete by adding polypropylene fibers and lightweight aggregates. To investigate the effect of volume fraction of fibers on the mechanical behavior of FRLAC and to determine the optimal volume fraction of fibers, a series of compression and flexural strength tests on FRLAC specimens with various fiber volume fractions(0%, 0.10%, 0.25%, 0.50%) were conducted. It was observed from the tests that a 0.25% volume fraction of fibers maximized the increase in the strength of FRLAC and the fibers controlled cracking in FRLAC.

본 논문은 오토클레이브 양생과정 없이 제작되는 섬유보강 경량골재 콘크리트(FRLAC)의 섬유 혼입률에 따른 역학적 특성의 변화를 알아보기 위해 수행된 실험적 연구의 결과에 대해 서술하고 있다. FRLAC는 폴리프로필렌 섬유와 경량골재를 혼입함으로써 기포 콘크리트의 강도를 증진시켰다. 섬유의 혼입률이 FRLAC의 역학적 특성에 미치는 영향을 알아보고 최적 섬유 혼입량을 결정하기 위해 폴리프로필렌 섬유의 혼입률이 0%, 0.10%, 0.25%, 0.50%인 공시체들을 제작하여 일련의 압축강도시험과 휨강도시험을 수행하였다. 시험 결과 0.25%의 섬유 혼입률에서 압축강도가 가장 많이 증대되었고, 섬유가 FRLAC의 균열진전을 제어함을 알 수 있었다.

Keywords

References

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Cited by

  1. Performance Characteristics of Lightweight Aggregate Cellular Concrete Containing Polypropylene Fibers vol.29, pp.6, 2010, https://doi.org/10.1177/0731684408100741
  2. Influence of Fiber Volume Fraction and Fiber Type on Mechanical Properties of FRLACC vol.29, pp.7, 2010, https://doi.org/10.1177/0731684409103702
  3. A Study on Properties of the Glass Fiber Reinforced PPS Composites for Automotive Headlight Source Module vol.29, pp.5, 2016, https://doi.org/10.7234/composres.2016.29.5.293