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    Effect of elevated temperatures on concrete incorporating ferronickel slag as fine aggregate

    Access Status
    Fulltext not available
    Authors
    Saha, A.
    Sarker, Prabir
    Majhi, S.
    Date
    2018
    Type
    Journal Article
    
    Metadata
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    Citation
    Saha, A. and Sarker, P. and Majhi, S. 2018. Effect of elevated temperatures on concrete incorporating ferronickel slag as fine aggregate. Fire and materials. 43 (1): pp. 8-21.
    Source Title
    Fire and materials
    DOI
    10.1002/fam.2664
    ISSN
    0308-0501
    School
    School of Civil and Mechanical Engineering (CME)
    URI
    http://hdl.handle.net/20.500.11937/71857
    Collection
    • Curtin Research Publications
    Abstract

    This study evaluates the effect of elevated temperature exposure on concrete incorporating ferronickel slag (FNS) as a replacement of natural sand. Concrete cylinders were exposed up to 800°C, and the changes in compressive strength, mass, ultrasonic pulse velocity (UPV), and microstructure were investigated. The concretes containing up to 100% FNS aggregate showed no spalling and similar cracking to that of the concrete using 100% natural sand. For exposures up to 600°C, the residual strengths of concretes containing 50% FNS were 7% to 10% smaller than the concrete with 100% sand. Use of 30% fly ash as cement replacement improved residual strength by pozzolanic reaction for exposures up to 600°C. An equation has been found from the correlation between residual strength and UPV. Therefore, UPV can be used as a nondestructive test to estimate the extent of postfire damage and residual strength of concrete incorporating FNS aggregate and fly ash.

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