Synergistic effects of fiber hybridization on the fracture toughness of seawater sea-sand concrete
Article
Mashayekhi, Amirhesam, Hassanli, Reza, Zhuge, Yan, Ma, Xing, Chow, Christopher W.K., Bazli, Milad and Manalo, Allan. 2024. "Synergistic effects of fiber hybridization on the fracture toughness of seawater sea-sand concrete." Construction and Building Materials. 444. https://doi.org/10.1016/j.conbuildmat.2024.137845
Article Title | Synergistic effects of fiber hybridization on the fracture toughness of seawater sea-sand concrete |
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ERA Journal ID | 3470 |
Article Category | Article |
Authors | Mashayekhi, Amirhesam, Hassanli, Reza, Zhuge, Yan, Ma, Xing, Chow, Christopher W.K., Bazli, Milad and Manalo, Allan |
Journal Title | Construction and Building Materials |
Journal Citation | 444 |
Article Number | 137845 |
Number of Pages | 15 |
Year | 2024 |
Publisher | Elsevier |
Place of Publication | Netherlands |
ISSN | 0950-0618 |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.conbuildmat.2024.137845 |
Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S0950061824029878 |
Abstract | This study investigates the fracture behavior of fiber-reinforced seawater sea-sand concrete (FR-SWSSC), focusing on the impact of fiber hybridization on fracture toughness properties and potential synergistic effects. The study employed micro-fibers including short polypropylene (PPS), polyvinyl alcohol (PVA), basalt fibers (BF), and macro-fibers consisting long polypropylene (PPL) and twisted polypropylene (TPPL) fibers. The results indicated that macro-fibers, PPL and TPPL, significantly enhanced the post-peak behavior of SWSSC, increasing fracture energy by 144 % and 93 % respectively, while micro-fibers alone showed negligible impact on the post-peak behavior. Micro-fiber hybridization significantly enhanced both flexural strength and fracture energy of SWSSC, with hybrid PPS/BF and PPS/PVA demonstrated notably improved fracture energy by 176 % and 290 %, respectively, compared to mono PPS. Hybrid combinations of micro/macro-fibers demonstrated a synergistic effect on fracture toughness, where PPL and TPPL fibers bridged larger cracks, activating micro-fibers for enhanced energy dissipation. Moreover, the strong interfacial bond of PVA and BF fibers with the concrete matrix improved macro-fiber bonding strength and overall fracture resistance. By exploring the synergistic effect of hybrid discrete fibers in enhancing the fracture performance of FR-SWSSC, this research promotes sustainable construction practices by addressing inherent challenges of SWSSC. |
Keywords | Fiber-reinforced concrete; Seawater; Sea-sand; Fracture toughness; Hybrid fiber; Synergy |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 401602. Composite and hybrid materials |
Byline Affiliations | University of South Australia |
Charles Darwin University | |
Centre for Future Materials | |
School of Engineering |
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https://research.usq.edu.au/item/z99z5/synergistic-effects-of-fiber-hybridization-on-the-fracture-toughness-of-seawater-sea-sand-concrete
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