Journal of the Korean Society of Marine Environment & Safety (해양환경안전학회지)

The Korean Society of Marine Environment and safety (해양환경안전학회)
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Analysis on the Harmful Effect of Recycled Powder and Properties of Concrete Admixture by Recycled Powder

재생미분말의 유해성 분석 및 재생미분말을 혼입한 콘크리트의 특성

  • Lee, Seung-Hwan (Division of Structure Engineering, G-PEM Engineers) ;
  • Choi, Ik-Chang (Division of Ocean System Engineering, Mokpo National Maritime University) ;
  • Han, Sang-Kuk (Division of Ocean System Engineering, Mokpo National Maritime University)
  • 이승환 (G-PEM(GlobaI Process Engineering Management ) 구조부) ;
  • 최익창 (목포해양대학교 해양시스템공학부) ;
  • 한상국 (목포해양대학교 해양시스템공학부)
  • Published : 2008.12.31
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Abstract

The disposal of constructive waste is emerging as a national and social issue and the recycled powder generated by the production of reproductive aggregate is all being abolished or buried Analysis on the harmful effect of recycled powder indicated that because it contained massive cytotoxicity, it could derive secondary pollution to soil and subterranean water. This study set on an idea that one way to recycle recycled powder was to use it as a compound of concrete. In order to study that prospect, recycled powder, instead of cement, was mixed and a comparative analysis was conducted on the mechanical properties and workability. From experimental results, it was judged that application of recycled powder of cement replacement ratio below 20% was available with chemical admixtures. Also application of recycled powder was available to high strength concrete.

건설폐기물의 처리는 국가 사회적 문제로 제기되고 있으며 순환골재의 생산과정에서 발생하는 미분말은 전량 폐기 매립되고 있다. 미분말의 유해성을 분석한 결과 세포독성을 함유하고 있어 토양 및 지하수오염 등 2차 오염을 초래할 수 있다. 본 연구에서는 미분말을 재활용하기 위한 방법으로 콘크리트의 혼화재로 활용하고자 시멘트 대신 미분말을 혼입한 콘크리트의 역학적 특성과 작업성을 비교 분석하였다. 콘크리트의 실험 결과에서, 혼화제를 적절히 사용하면 미분말을 시멘트 대신 20% 이하 치환한 경우 콘크리트에 적용 가능할 것으로 판단된다. 또한 고강도 콘크리트에서도 적용할 수 있다.

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