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    Shrinkage and mechanical performance of geopolymeric mortars based on calcined Tunisian clay

    TitleShrinkage and mechanical performance of geopolymeric mortars based on calcined Tunisian clay
    Publication TypePapers in International Journals
    Year of Publication2013
    AuthorsTahri W., Samet B., Pacheco-Torgal, F., Aguiar, J. B., Jesus C., and s. Baklouti
    Abstract

    Infrastructure rehabilitation represents a multitrillion dollar opportunity for the construction industry. Since the majority of the existent infrastructures are Portland cement concrete based this means that concrete infrastructure rehabilitation is a hot issue to be dealt with. Geopolymers are novel inorganic binders with high potential to replace Portland cement based ones. Geopolymerization is a complex chemical process evolving various aluminosilicate oxides with silicates under highly alkaline conditions, yielding polymeric units, similar to those of an aluminosilicate glass. So far very few studies in the geopolymer field have addressed the rehabilitation of deteriorated concrete structures. This paper discloses some results of an investigation concerning the development geopolymeric repair mortars based on a calcined Tunisian clay. The results show that Tunisian calcined clay based mortars have hydration products with typical geopolymeric phases. Results also show that the geopolymeric mortar shows a high unrestrained shrinkage behavior and that its modulus of elasticity is below the threshold required for this repair mortars

    JournalJCMR - Journal of Chemistry and Materials Research
    Volume4
    Pagination6-11
    Date Published2013-11-30
    PublisherORIC Publications
    ISSN2381-3628
    KeywordsCompressive strength, Geopolymeric mortars, Modulus of elasticity, Tunisian clay, Unrestrained shrinkage, Workability
    RightsopenAccess
    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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