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Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Environmental Life Cycle Assessment of Concrete Containing Fly Ash
Author(s): Z. Li, Y. Yamamoto, and M. Sagisaka
Publication: Special Publication
Appears on pages(s): 573-588
Keywords: concrete; eco-efficiency; environmental life cycle assessment, environmental performance indicator; fly ash
Abstract:In this study, environmental performance indicator is proposed for comprehensively evaluating the environmental burdens of concrete. Also an environmental life cycle assessment (LCA) is done to comprehensively estimate and to quantitatively compare the environmental burden of concrete containing fly ash over plain concrete, associated with the stages from resource acquisition to concrete's production process. The considered environmental impacts include COY SOx, NO., emissions, energy consumption, waste discharge and land use. The LCA results show quantitatively a fact that concrete containing fly ash is a kind of environment-friendly material relative to plain concrete, whether cement or fine aggregate is replaced. Replacing portland cement than using for fine aggregate will bring a greater reduction in environmental burden of concrete. The evaluation, only relying on the reductions in energy consumption and CO2 emission, will underestimate the eco-balance performance of fly ash concrete. When cement is replaced, all the land use area, air emissions and energy consumption decrease obviously. However, only is the land use area clearly reduced in case of replacing fine aggregate. Moreover, the eco-efficiency of fly ash concrete is greater than that of plain concrete.
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