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    Performance of steel slag and steel sludge in concrete

    Access Status
    Fulltext not available
    Authors
    Roslan, N.
    Ismail, Mohamed
    Abdul-Majid, Z.
    Ghoreishiamiri, S.
    Muhammad, B.
    Date
    2016
    Type
    Journal Article
    
    Metadata
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    Citation
    Roslan, N. and Ismail, M. and Abdul-Majid, Z. and Ghoreishiamiri, S. and Muhammad, B. 2016. Performance of steel slag and steel sludge in concrete. Construction and Building Materials. 104: pp. 16-24.
    Source Title
    Construction and Building Materials
    DOI
    10.1016/j.conbuildmat.2015.12.008
    ISSN
    0950-0618
    School
    Curtin Malaysia
    URI
    http://hdl.handle.net/20.500.11937/72295
    Collection
    • Curtin Research Publications
    Abstract

    The impact of environmental cleansing through inclusion of hazardous wastes in cement related products cannot be overemphasized. This paper presents outcomes of laboratory experiments on the utilizations of electric arc furnace steel slag and steel sludge (by-products from steel making industries) as cement replacements in concrete. Pozzolanic properties of steel slag and steel sludge were evaluated using pozzolanic activity test specified by ASTM C618. In addition, the materials were subjected to X-ray Fluorescence and X-ray Diffraction tests in order to identify their chemical as well as mineral compositions respectively. In the process, conductivity of materials suspension in calcium hydroxide (Ca(OH)2) solution were monitored. Mechanical properties of the concrete containing the steel slag and steel sludge were also evaluated. The results of pozzolanic activity tests show that steel sludge has a higher reactivity due its higher loss of conductivity which is about 72.9% as against 43.3% for steel slag. However, both materials show good reactivity in Ca(OH)2 solution. In fact, the strength activity index of both materials were observed to reach a minimum of 75% based on ASTM C618 requirement. Eventually, compressive strength development in concrete due to inclusion of 15% and 20% steel sludge and steel slag respectively yielded higher strength gains over the control mix particularly at later curing ages.

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