Influence of external factors on leaching of hexavalent chro1vewm from concrete waste

Yasuhiro Kuroda, Naoyuki Koshiishi

    Research output: Contribution to journalArticle

    Abstract

    In this paper, the influence of the external factors on the amount of hexavalent chromium Cr(VI) released from the concrete waste and the adsorption/reduction action caused by the surround soil, was investigated. The following results were obtained. 1. Serial batch test using mildly nitric acid solution is expected to be able to assess available amount for leaching under the general environment. 2. In case of the carbonation sample, the dissolution continued under the soaking condition, after the 91 days. 3. Blast-furnace slag fine aggregate and the powder reduced Cr(VI).4. Volcanic cohesive soil and organic soil have the capacity of absorption/reduction.

    Original languageEnglish
    Pages (from-to)1803-1808
    Number of pages6
    JournalJournal of Structural and Construction Engineering
    Volume75
    Issue number656
    DOIs
    Publication statusPublished - 2010 Oct

    Fingerprint

    Leaching
    Concretes
    Soils
    Carbonation
    Nitric acid
    Slags
    Chromium
    Dissolution
    Adsorption
    Powders

    Keywords

    • Carbonation
    • Concrete waste
    • Hexavalent chromium
    • Hydrogen-ion concentration
    • Leaching test
    • Reduction

    ASJC Scopus subject areas

    • Building and Construction
    • Architecture

    Cite this

    Influence of external factors on leaching of hexavalent chro1vewm from concrete waste. / Kuroda, Yasuhiro; Koshiishi, Naoyuki.

    In: Journal of Structural and Construction Engineering, Vol. 75, No. 656, 10.2010, p. 1803-1808.

    Research output: Contribution to journalArticle

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