The properties of fly ash based geopolymer mortars made with dune sand

E. Hunter, A. H. Korayem, Z. Pan, W. H. Duan, X. L. Zhao, F. Collins, J. G. Sanjayan

    Research output: Chapter in Book / Conference PaperConference Paperpeer-review

    Abstract

    ![CDATA[Geopolymer cement utilises industrial by-products and is associated with low CO2 emissions. The use of dune sand as fine aggregate could reduce the environmental impact of mining activities. The present study is to examine the feasibility of using dune sand in geopolymer-based construction materials. The geopolymer mortars made with dune sand (DSM) were prepared by using alkali activators of different cations (Na, K and Na/K). In order to compare, the corresponding geopolymer mortars made with normal sand (NSM) were also prepared. It was found that dune sand has little influence on the strength of geopolymer mortars, especially for K based mortars. However, the alkali cation has significant influence on the compressive strength of geopolymer mortars. This influence was found to be correlated to porosity. Low compressive strength is associated with high porosity. For all investigated alkali cations, the tensile strengths of DSM compare favourably to those predicated by the relevant Standards for construction materials. Based on the experimental results, Australian dune sand can be used as fine aggregate for the production of geopolymer based construction materials.]]
    Original languageEnglish
    Title of host publicationProceedings of the 6th International Composites Conference (ACUN-6): Composite & Nanocomposites in Civil, Offshore and Mining Infrastructure, Monash University, Clayton, Australia, 14th-16th November 2012
    PublisherMonash University
    Pages399-404
    Number of pages6
    ISBN (Print)9780646585895
    Publication statusPublished - 2012
    EventInternational Composites Conference -
    Duration: 14 Nov 2012 → …

    Conference

    ConferenceInternational Composites Conference
    Period14/11/12 → …

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