Development of chloride-resisting concrete using fly ash

R. K. Dhir (Lead / Corresponding author), M. R. Jones

    Research output: Contribution to journalArticle

    74 Citations (Scopus)

    Abstract

    This paper describes how low-lime fly ash can be used to develop chloride-resistant concrete by improving both its physical resistance to the ingress of chlorides and binding capacity of these ions in the cover zone. This includes optimizing the fly ash content, reducing the water/binder ratio of the concrete, processing fly ash to improve its particulate characteristics and, finally, using ternary blends with silica fume or metakaolin. This last method is shown to provide the highest degree of chloride resistance. A tentative classification of chloride-bearing environments together with recommendations for the specification of concrete for structures exposed to these environments, is proposed.

    Original languageEnglish
    Pages (from-to)137-142
    Number of pages6
    JournalFuel
    Volume78
    Issue number2
    DOIs
    Publication statusPublished - 1 Jan 1999

    Keywords

    • Chlorides
    • Concrete
    • Fly ash

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