한국건축시공학회지 (Journal of the Korea Institute of Building Construction)

  • 제14권6호
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  • Pages.515-522
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  • 2014
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  • 1598-2033(pISSN)
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  • 2233-5706(eISSN)
한국건축시공학회 (The Korean Institute of Building Construction)
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플라이애시가 콘크리트의 전과정 환경영향에 미치는 효과

Influence of Fly Ash on Life-Cycle Environmental Impact of Concrete

  • Jung, Yeon-Back (Department of Architectural Engineering, Kyonggi University Graduate School) ;
  • Yang, Keun-Hyeok (Department of Plant.Architectural Engineering, Kyonggi University) ;
  • Choi, Dong-Uk (Department of Architectural Engineering, Hankyong National University)
  • 투고 : 2014.05.22
  • 심사 : 2014.09.19
  • 발행 : 2014.12.20
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초록

혼화재로서 플라이애시가 콘크리트의 전과정 환경영향에 미치는 효과를 정량적으로 평가하기 위하여, 4023개의 실내배합 및 2120개의 레미콘 배합을 분석하였다. 전과정 환경 평가에서 환경부하는 분류화, 특성화, 정규화 및 가중치 단계를 거쳐 정량적인 환경영향 지표로 환산되었다. 콘크리트 전과정 환경영향은 주로 지구 온난화, 광화학 산화 생성물 및 무생물 자원고갈의 세 범주로 분류될 수 있었다. 또한, 콘크리트의 환경영향 지표들은 플라이애시 치환율의 증가와 함께 감소하였으며, 대부분 보통 포틀랜드 시멘트의 양에 의해 결정되었다. 이를 고려하여, 콘크리트의 환경영향 지표들은 단위 결합재 양 및 플라이애시 치환율의 함수로 간단하게 모델링 될 수 있었다.

In order to quantitatively evaluate the effect of fly ash (FA) as partial replacement of cement on the life-cycle environmental impact of concrete, a comprehensive database including 4023 laboratory mixes and 2120 plant mixes was analyzed. The environmental loads on the life-cycle assessment were quantitatively converted into environmental impact indicators through categorization, characterization, normalization and weighting process. The life-cycle environmental impacts of concrete could be classified into three categories including global warming, photochemical oxidant creation and abiotic resource depletion. Furthermore, these environmental impacts of concrete was decreased with the increase of the replacement level of FA and governed by the unit content of ordinary portland cement (OPC). As a result, simple equations to assess the environmental impact indicators could be formulated as a function of the unit content of binder and the replacement level of FA.

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참고문헌

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피인용 문헌

  1. Mixture-Proportioning Model for Low-CO2 Concrete Considering the Type and Addition Level of Supplementary Cementitious Materials vol.27, pp.4, 2015, https://doi.org/10.4334/JKCI.2015.27.4.427
  2. Determination of Water-to-Binder Ratios on the Equivalent Compressive Strength of Concrete with Supplementary Cementitious Materials vol.27, pp.6, 2015, https://doi.org/10.4334/JKCI.2015.27.6.687