The hardening behaviour of cementitious materials

Morteza Y. Abyaneh, M.J. Keedwell, C. Leppard, Peter A. Claisse

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    Abstract

    Data from tests on samples of lime-pulverised fuel ash (PFA), lime–gypsum–PFA and cement–PFA mixtures have been analysed. In the case of the lime–PFA mixture, three phases of strength gain were identified, as follows. Phase 1—a rapid initial gain in strength, followed by an induction phase during which little or no strength gain was recorded. After an induction period this was followed by: phase 2—a further period of rapid strength gain; and phase 3—a period of slow gain in strength. A strengthening model based on the interlacing of fibrous growth forms is considered for the phase 3 stage of strengthening which is validated by scanning electron microscope work. It is shown that additional strength resulting from the additions of gypsum at 20°C is due to the phase 3 strengthening stage.
    Original languageEnglish
    Pages (from-to)3-11
    JournalMagazine of Concrete Research
    Volume53
    Issue number1
    DOIs
    Publication statusPublished - 2001

    Bibliographical note

    PDF allowed open access by kind permission of Thomas Telford Journals.

    Keywords

    • lime-pulverised fuel ash
    • lime–gypsum fuel ash
    • cement fuel ash

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  • Cite this

    Abyaneh, M. Y., Keedwell, M. J., Leppard, C., & Claisse, P. A. (2001). The hardening behaviour of cementitious materials. Magazine of Concrete Research, 53(1), 3-11. https://doi.org/10.1680/macr.53.1.3.39501