Life cycle assessment of geopolymer concrete: A Malaysian context

Teresa McGrath, Siobhan Cox, Marios Soutsos, Daniel Kong , Pooi Mee Lim , U J Alengaram

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

2 Citations (Scopus)
190 Downloads (Pure)

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 publicationCONCET 2018 14th International Conference on Concrete Engineering and Technology
Subtitle of host publicationIOP Conference Series: Materials Science and Engineering
PublisherIOP PUBLISHING LTD
Number of pages8
ISBN (Electronic)1757-899X
DOIs
Publication statusPublished - 15 Nov 2018

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  • Cite this

    McGrath, T., Cox, S., Soutsos, M., Kong , D., Lim , P. M., & Alengaram, U. J. (2018). Life cycle assessment of geopolymer concrete: A Malaysian context. In CONCET 2018 14th International Conference on Concrete Engineering and Technology : IOP Conference Series: Materials Science and Engineering IOP PUBLISHING LTD. https://doi.org/10.1088/1757-899X/431/9/092001