Journal of the Korean Recycled Construction Resources Institute (한국건설순환자원학회논문집)

Korean Recycled Construction Resources Institute (한국건설순환자원학회)
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An Investigation on Recycling of Prestressed Concrete Sleepers

프리스트레스트 콘크리트 침목의 재활용 기술에 대한 고찰과 기초 실험

  • Jae-Young Lee (Transportation Environmental Research Team, Korea Railroad Research Institute (KRRI)) ;
  • Uijun Lee (School of Civil and Environmental Engineering, Hankyong National University) ;
  • Jaewon Lee (School of Civil and Environmental Engineering, Hankyong National University) ;
  • Sunmo Yang (School of Civil and Environmental Engineering, Hankyong National University) ;
  • Seongwoo Gwon (School of Civil and Environmental Engineering & Construction Engineering Research Institute, Hankyong National University)
  • 이재영 (한국철도기술연구원 교통환경연구실) ;
  • 이의준 (한경국립대학교 건설환경공학부) ;
  • 이재원 (한경국립대학교 건설환경공학부) ;
  • 양선모 (한경국립대학교 건설환경공학부) ;
  • 권성우 (한경국립대학교 건설환경공학부)
  • Received : 2023.09.22
  • Accepted : 2023.10.05
  • Published : 2023.12.30
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Abstract

The need for sustainable waste management has intensified the focus on recycling prestressed concrete sleepers used in railways. Given their high volume and environmental impact at the end of their service life, finding efficient recycling methods is crucial. This study explores current recycling approaches, particularly mechanical techniques, evaluating their advantages, limitations, and economic feasibility. Finally, an example of mechanical recycling was performed. The analysis results of the resulting recycled aggregates are suggested. Then, the non-cement concrete mixtures with recycled aggregates were designed, and their strength development was analyzed.

지속가능한 폐기물 관리의 필요성으로 인해 철도에 사용되는 프리스트레스트 콘크리트 침목의 재활용에 관한 관심이 높아졌다. 이에 따라, 사용 수명이 다한 폐콘크리트 침목의 양이 증가한다는 점과 이것이 환경에 미치는 영향을 고려할 때, 폐콘크리트 침목의 효율적인 재활용 방법을 찾는 것은 매우 중요하다. 이 연구는 현재의 재활용 방법, 특히 기계적 처리 방법을 조사하고, 이들의 이점, 한계, 그리고 경제적 실현 가능성에 대해 파악하였다. 이를 참고하여 본 연구는 기계적 재활용 처리 방법의 한 예시를 수행하여 회수된 순환 골재의 특성과 이를 포함하여 제조한 알칼리 활성화 플라이애시 콘크리트의 특성을 분석하였다. 향후 본 연구 결과물을 콘크리트 침목으로 다시 적용할 목적으로 기초적으로 연구하였다.

Keywords

Acknowledgement

본 연구는 한국철도기술연구원의 기본사업 '철도시설의 폐기물 발생 저감 및 재자원화 기술 개발(PK2302C2)'의 용역비 지원으로 수행되었습니다.

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