Influence of various factors on leaching of hexavalent chromium from cement concrete

Yasuhiro Kuroda, Naoyuki Koshiishi

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    Abstract

    On the basis that cement concrete are used in various life cycle stages, we examined the leaching tests. In the case of using ordinary Portland cement, the leaching amount of hexavalent chromium was influenced by total chrome content and chemical component and the amount was decreased with the hydration. On the other hand, carbonation was found to cause the decomposition of cement hydrates and the release of fixed hexavalent chromium. Moreover, in the case of using Portland blast-furnace slag cement type B, the hexavalent chromium hardly leached, due to reduction action of blast-furnace slag.

    Original languageEnglish
    Pages (from-to)715-722
    Number of pages8
    JournalJournal of Structural and Construction Engineering
    Volume75
    Issue number650
    DOIs
    Publication statusPublished - 2010 Apr

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    Keywords

    • Blast-fiirnace slag
    • Carbonization
    • Cement
    • Hexavalent chromium
    • Limestone powder
    • Total chrome content

    ASJC Scopus subject areas

    • Building and Construction
    • Architecture

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