Journal of the Architectural Institute of Korea (대한건축학회논문집)

Architectural Institute of Korea (대한건축학회)
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Evaluation of Compressive Performance of Lightweight Aggregate Concrete Reinforced with Micro-Steel Fibers

마이크로 강섬유 보강 경량골재 콘크리트의 압축거동 평가

  • Lee, Hye-Jin (Department of Architectural Engineering, Kyonggi University) ;
  • Yang, Keun-Hyeok (Dept. of Architectural Engineering, Kyonggi University) ;
  • Kim, Hak-Young (Korea Disaster Prevention Safety Technology Co.,Ltd) ;
  • Lee, Yeon-Jeong (Department of Architectural Engineering, Kyonggi University)
  • 이혜진 (경기대 건축공학과 일반대학원) ;
  • 양근혁 (경기대 건축공학전공) ;
  • 김학영 ((주)한국방재안전기술) ;
  • 이연정 (경기대 건축공학과 일반대학원)
  • Received : 2022.10.16
  • Accepted : 2023.04.24
  • Published : 2023.05.30
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Abstract

The present study examined the effect of micro-steel fibers on the compressive performance of lightweight aggregate concrete (LWAC) with a higher compressive strength-to-density (fck/𝜌c) ratio. The artificially expanded clay aggregates and expanded waste glass particles were used for producing LWAC with a higher fck/𝜌c ratio. Main parameters selected were the designed compressive strength of concrete and volumetric ratio of the fibers. Test results showed that the present LWAC specimens exhibited a higher fck than the previous non-reinforced LWAC mixtures at the same 𝜌c. This enhanced fck was more notable as 𝜌c increased from 1,300 kg/m3 to 1,600 kg/m3. In addition, LWAC specimens reinforced with micro-steel fibers displayed a higher value of compressive toughness index than those reinforced with the conventional macro-steel fibers at the same fiber reinforcing index.

Keywords

Acknowledgement

본 연구는 국토교통부/국토교통과학기술진흥원의 지원으로 수행되었음(과제번호 RS-2020-KA156177).

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