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    Effect of grounded blast furnace slag and rice husk ash on performance of ultra-high-performance concrete (UHPC) subjected to impact loading

    Access Status
    Fulltext not available
    Embargo Lift Date
    2024-03-21
    Authors
    Ha, San
    Marundrury, S.S.
    Pham, Thong
    Pournasiri, E.
    Shi, F.
    Hao, H.
    Date
    2022
    Type
    Journal Article
    
    Metadata
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    Citation
    Ha, N.S. and Marundrury, S.S. and Pham, T.M. and Pournasiri, E. and Shi, F. and Hao, H. 2022. Effect of grounded blast furnace slag and rice husk ash on performance of ultra-high-performance concrete (UHPC) subjected to impact loading. Construction and Building Materials. 329: ARTN 127213.
    Source Title
    Construction and Building Materials
    DOI
    10.1016/j.conbuildmat.2022.127213
    ISSN
    0950-0618
    Faculty
    Faculty of Science and Engineering
    School
    School of Civil and Mechanical Engineering
    Funding and Sponsorship
    http://purl.org/au-research/grants/arc/FL180100196
    URI
    http://hdl.handle.net/20.500.11937/91602
    Collection
    • Curtin Research Publications
    Abstract

    This paper investigates the effect of using alternative cementitious constituents on the compressive performance of Ultra-High-Performance Concrete (UHPC) for both static and dynamic conditions. The grounded blast furnace slag (GBFS) and rice husk ash (RHA) with different portions were used to replace 30% ordinary Portland cement (OPC) of a reference mix (UHPC-R1). Two alternative UHPC mixes including an UHPC mix with 30% GBFS mix (UHPC-AC1) and an UHPC mix with 15% GBFS and 15% RHA mix (UHPC-AC2) were considered. The quasi-static compressive strength and dynamic compressive strength of the proposed UHPC mixes were then determined using a compression testing machine and a Split Hopkinson Pressure Bar, respectively. The results indicated that UHPC-AC1 and UHPC-AC2 yielded a comparable performance compared to the reference mix UHPC-R1. In particular, the static compressive strength of UHPC-AC1 and UHPC-AC2 mixes were found to only be 5% and 10% less than those of the UHPC-R1 mix, respectively. In addition, the study also found that UHPC-AC1 and UHPC-AC2 achieved a similar dynamic compressive strength compared to the UHPC-R1, and the compressive strength of UHPC-AC1 and UHPC-AC2 were not strain rate sensitive. For the environmental aspect, UHPC-AC1 and UHPC-AC2 have a lower embedded CO2 emission index compared to the reference UHPC-R1.

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