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    Characterization of palm oil fuel ash and eggshell powder as partial cement replacement in concrete

    Access Status
    Fulltext not available
    Authors
    Khalid, N.
    Rasid, N.
    Mohdsam, A.
    Lim, N.
    Ismail, Mohamed
    Zardasti, L.
    Mohamed, A.
    Majid, Z.
    Ariffin, N.
    Date
    2018
    Type
    Conference Paper
    
    Metadata
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    Citation
    Khalid, N. and Rasid, N. and Mohdsam, A. and Lim, N. and Ismail, M. and Zardasti, L. and Mohamed, A. et al. 2018. Characterization of palm oil fuel ash and eggshell powder as partial cement replacement in concrete.
    Source Title
    IOP Conference Series: Materials Science and Engineering
    DOI
    10.1088/1757-899X/431/3/032002
    ISSN
    1757-8981
    School
    Curtin Malaysia
    URI
    http://hdl.handle.net/20.500.11937/74818
    Collection
    • Curtin Research Publications
    Abstract

    © Published under licence by IOP Publishing Ltd. The utilization of palm oil fuel ash (POFA) and eggshell powder (ESP) in concrete as a cement replacement is possible as green concrete materials. However, the POFA has original cellulose and physical modification is needed. This paper presents the characterization of POFA; unground POFA (UPOFA) and ground POFA(GPOFA) and ESP under microstructure examination includes x-ray fluorescence (XRF), scanning electron microscopy (SEM), and particle size analyzer (PSA). Then, the POFA-ESP as a cement replacement in concrete was investigated. Optimum mix proportion of POFA-ESP concrete was determined from compression test and GPOFA-ESP and UPOFA-ESP were through further investigation on pozzolanic reaction under x-ray diffraction (XRD) test at 14 days-concrete age. It was found that the combination of GPOFA-ESP as a cement replacement produced a concrete enhanced the compressive strength than normal concrete. ESP in this study seems like a catalyst which acting as mild accelerator or booster to improve the early age of strength development without disturb the later strength development of concrete. In addition, combination of GPOFA-ESP could increase the C-S-H gel at early age of concrete. It can be concluded that the combination of GPOFA-ESP had dual function; ESP and GPOFA took at early and later strength development, respectively.

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