Journal of the Korean Recycled Construction Resources Institute (한국건설순환자원학회논문집)

Korean Recycled Construction Resources Institute (한국건설순환자원학회)
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A Study on the Strength Properties and Life Cycle Assessment of High Strength Concrete Using Recycled Coarse Aggregate

순환굵은골재를 활용한 콘크리트의 강도 특성 및 전과정 환경영향 평가에 관한 연구

  • Choi, Won-Young (Korea Institute of Civil engineering and Building Technology) ;
  • Lee, Sae-Hyun (Korea Institute of Civil engineering and Building Technology) ;
  • Jun, Chan-Soo (Korea Institute of Civil engineering and Building Technology) ;
  • Kim, Tae-Hyoung (Korea Institute of Civil engineering and Building Technology)
  • 최원영 (한국건설기술연구원 건축도시연구소) ;
  • 이세현 (한국건설기술연구원 건축도시연구소) ;
  • 전찬수 (한국건설기술연구원 건축도시연구소) ;
  • 김태형 (한국건설기술연구원 건축도시연구소)
  • Received : 2017.11.01
  • Accepted : 2018.02.19
  • Published : 2018.03.30
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Abstract

Waste concrete accounts for the largest portion of construction waste, and the supply of natural aggregate is unstable. Therefore, importance of using recycled aggregate is emphasized. The purpose of this study is to investigate the mechanical properties of high strength concrete according to the replacement rate of recycled coarse aggregate. For this purpose, the target design compressive strength was set to 40MPa, and the substitution rates of the recycled coarse aggregate were set to 0%, 30%, 60%, and 100%, respectively. Through experiments on the unreinforced concrete and hardened concrete, The validity of the use was confirmed. In addition, LCA method was used to evaluate the environmental impact of recycled aggregates and to compare and analyze the environmental impacts of the aggregates.

본 연구에서는 순환굵은골재의 혼입률에 따른 콘크리트의 강도 특성을 실험을 통해 확인하고, 다량의 순환골재를 콘크리트에 활용하기 위한 기초적 자료로 사용하는 것을 목적으로 한다. 이를 위해, 목표설계기준 압축강도는 40MPa로 하였으며, 순환골재 실용화를 고려하여 순환잔골재의 혼입률을 0, 30%로 하고, 순환굵은골재의 혼입률은 0, 30, 60, 100%로 설정하여 굳지 않은 콘크리트 및 굳은 콘크리트에 대한 실험을 통해 콘크리트 제조에 순환골재 사용의 유효성을 확인하였다. 또한, 전과정 평가(LCA, Life Cycle Assessmet) 기법을 이용하여 순환골재의 전과정 환경영향을 평가하여 콘크리트를 제조함에 있어서 순환골재 사용이 유효성을 확인하였다.

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References

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