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    Compressive strength of tungsten mine waste- and metakaolinbased geopolymers

    TitleCompressive strength of tungsten mine waste- and metakaolinbased geopolymers
    Publication TypePapers in International Journals
    Year of Publication2014
    AuthorsNazari A., Pacheco-Torgal, F., Cevik A., and Sanjayan J.
    Abstract

    Neuro-fuzzy approach has been successfully applied to a wide range of civil engineering problems so far. However, this is limited for geopolymeric specimens. In the present study, compressive strength of different types of geopolymers has been modeled by adaptive neuro-fuzzy interfacial systems (ANFIS). The model was constructed by 395 experimental data collected from the literature and divided into 80% and 20% for training and testing phases, respectively. Curing time, Ca(OH)2 content, NaOH concentration, mold type, aluminosilicate source and H2O/Na2O molar ratio were independent input parameters in the proposed model. Absolute fraction of variance, absolute percentage error and root mean square error of 0.94, 11.52 and 14.48, respectively in training phase and 0.92, 15.89 and 23.69, respectively in testing phase of the model were achieved showing the relatively high accuracy of the proposed ANFIS model. By the obtained results, a comparative study was performed to show the interaction of some selected factors on the compressive strength of the considered geopolymers. The discussions findings were in accordance to the experimental studies and those results presented in the literature.

    JournalCeramics International
    Volume40
    EditionElsevier
    Issue Issue 4, May 2014
    Pagination6053-6062
    Date Published2014-02-09
    PublisherElsevier
    ISSN0272-8842
    DOI10.1016/j.ceramint.2013.11.055
    URLhttp://hdl.handle.net/1822/28967
    KeywordsAluminosilicate source, ANFIS, Compressive strength, Geopolymer, NaOH concentration, Neuro-fuzzy modelling
    RightsembargoedAccess (1 Year)
    Peer reviewedyes
    Statuspublished
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    About CTAC

    The Centre for Territory, Environment and Construction (CTAC) is a research unit of the School of Engineering of University of Minho (UMinho), recognised by the “FCT – Fundação para a Ciência e Tecnologia” (Foundation for Science and Technology), associated to the Department of Civil Engineering (DEC), with whom it shares resources and namely human resources.

    Currently CTAC aggregates 25 researchers holding a PhD of which 20 are faculty professors of the Civil Engineering Department. Read more


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