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http://hdl.handle.net/10397/94184
Title: | Workability, strength, and shrinkage of ultra-high-performance seawater, sea sand concrete with different OPC replacement ratios | Authors: | Saleh, S Li, YL Hamed, E Mahmood, AH Zhao, XL |
Issue Date: | 2023 | Source: | Journal of sustainable cement-based materials, 2023, v. 12, no. 3, p. 271-291 | Abstract: | An experimental investigation on the chemical, physical, mechanical, and shrinkage of seawater and sea sand-based ultra-high-performance concrete (UHP-SWSSC) with supplementary cementitious materials (SCM) (i.e. slag and silica fume) is reported. Several mixes were designed with varying proportions of SCMs (25%, 37.5%, 50%, and 62.5% of binder), aggregate source, and water-to-binder ratio. Heat evolution, density, workability, compressive strength development, and long-term autogenous and drying shrinkage of UHP-SWSSC were monitored. Seawater accelerates cement hydration as reflected in the heat evolution, and consequently, dictates the early-age strength, and autogenous shrinkage. SCM addition although limits the early-age strength development offers a comparable 90 days strength. The chloride content increases from marine resources and may limit the application to nonstructural components. Nonetheless, a UHP-SWSSC mix with 50% OPC replaced by 37.5% slag and 12.5% silica fume is recommended in this study, which can achieve satisfactory workability, long-term strength, and shrinkage properties. | Keywords: | OPC replacement ratio Shrinkage Strength Ultra-high-performance seawater sea sand concrete Water-to-binder ratio Workability |
Publisher: | Taylor & Francis | Journal: | Journal of sustainable cement-based materials | ISSN: | 2165-0373 | DOI: | 10.1080/21650373.2022.2050831 | Rights: | © 2022 Informa UK Limited, trading as Taylor & Francis Group This is an Accepted Manuscript of an article published by Taylor & Francis in Journal of sustainable cement-based materials on 17 Mar 2022 (Published online), available online: http://www.tandfonline.com/10.1080/21650373.2022.2050831. |
Appears in Collections: | Journal/Magazine Article |
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File | Description | Size | Format | |
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Saleh_Workability_Strength_Shrinkage.pdf | Pre-Published version | 2.34 MB | Adobe PDF | View/Open |
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