Life cycle assessment of geopolymer concrete: a Malaysian context

T. E. McGrath, S. Cox, M. Soutsos, D. Kong, L. P. Mee, J. U.J. Alengaram

    Research output: Chapter in Book/Report/Conference proceedingConference PaperOther

    7 Citations (Scopus)

    Abstract

    The production of Portland cement is well acknowledged as having as significant impact on the environment, accounting for 8% of global CO2 emissions (4bn tonnes per annum). Concrete is the most widely used material in the world and therefore has vast potential to absorb high volumes of waste and by-product materials. These materials can act as partial replacements as supplementary cementitious materials or total replacements and perform as binders in geopolymer concretes. The use of Pulverised Fuel Ash (PFA) from coal-fired electricity generating stations to substitute Ordinary Portland Cement (OPC) is well established. Quantifying the potential environmental benefit of using such materials can be difficult. The life cycle assessment (LCA) methodology, internationally standardised through ISO14040 series, may be used to quantify the environmental impact of products and processes. This paper outlines the use of the LCA methodology to compare the environmental impact of OPC precast concrete products to PFA precast concrete products in a Malaysian context. The four stages of LCA are detailed and consequences of designating materials as a by-product or waste are discussed. A review of other LCA studies completed in Malaysia for the built environment are also presented so as to identify which impact assessment methods are most frequently used.

    Original languageEnglish
    Title of host publication14th International Conference on Concrete Engineering and Technology, CONCET 2018
    PublisherIOP Publishing
    Volume431
    Edition9
    DOIs
    Publication statusPublished - 2018
    EventInternational Conference on Concrete Engineering and Technology 2018 - Kuala Lumpur, Malaysia
    Duration: 8 Aug 20189 Aug 2018
    Conference number: 14th
    https://iopscience.iop.org/issue/1757-899X/431/4 (Proceedings)

    Publication series

    NameIOP Conference Series: Materials Science and Engineering
    PublisherIOP Publishing
    ISSN (Print)1757-8981

    Conference

    ConferenceInternational Conference on Concrete Engineering and Technology 2018
    Abbreviated titleCONCET 2018
    CountryMalaysia
    CityKuala Lumpur
    Period8/08/189/08/18
    Internet address

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