Journal of the Korean Recycled Construction Resources Institute (한국건설순환자원학회논문집)

Korean Recycled Construction Resources Institute (한국건설순환자원학회)
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Mechanical Performance Evaluation of Concrete with Recycled Coarse Aggregate Selected by Multi-stage Wind Pressure

다단형 풍압처리에 의해 선별된 순환굵은골재 적용 콘크리트의 역학적 성능 평가

  • Chu, Young-Kyu (Department of Civil Engineering, Kunsan University) ;
  • Lee, Seung-Tae (Department of Civil Engineering, Kunsan University) ;
  • Lee, Se-Hyun (Korea Institute of Civil engineering and Building Technology)
  • 추영규 (군산대학교 토목공학과) ;
  • 이승태 (군산대학교 토목공학과) ;
  • 이세현 (한국건설기술연구원 국민생활연구본부)
  • Received : 2021.10.06
  • Accepted : 2021.10.19
  • Published : 2022.03.30
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Abstract

In this study, the mechanical properties of concrete with recycled coarse aggregate (RG) selected by multi-stage wind pressure (MSWP) treatment were evaluated. After evaluating the basic properties of natural and recycled coarse aggregates, the mechanical performance of the recycled coarse aggregates concrete was experimentally investigated. As a result, it was found that the MSWP technique could improve the fundamental properties such as density and water absorption of RG. In addition, the concrete with RG selected by MSWP showed a better mechanical performance, indicating a higher strength values, surface electric resistivity and a lower absorption. Thus, it seems that the MSWP technique can be effective for the production of high-quality RG.

본 연구에서는 순환골재의 고품질화를 위한 일환으로 다단형 풍압처리에 의해 선별된 순환굵은골재를 적용한 콘크리트의 역학적 특성을 평가하였다. 먼저, 천연골재 및 순환굵은골재의 기초물성을 고찰하였으며, 순환굵은골재 적용 콘크리트의 역학적 성능을 실험적으로 고찰하였다. 실험결과에 의하면, 다단형 풍압처리 기법은 순환골재의 밀도, 흡수율 등 기초물성을 개선시켰으며, 콘크리트의 역학적 성능도 매우 향상시키는 효과를 나타냄으로써, 순환골재의 고품질화에 유효하게 작용하는 것으로 나타났다.

Keywords

Acknowledgement

본 논문은 한국연구재단의 지역대학우수연구자사업(2020R1I1A306498012)의 연구과제에서 연구비를 지원받아 수행된 결과입니다. 이에 감사드립니다.

References

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