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http://dx.doi.org/10.5345/JKIBC.2014.14.6.515

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)
Publication Information
Journal of the Korea Institute of Building Construction / v.14, no.6, 2014 , pp. 515-522 More about this Journal
Abstract
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.
Keywords
environmental impact; fly ash; unit content of binder; global warming;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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