Shear performance of fibre-reinforced seawater sea-sand concrete–fibre hybridization and synergy effects
Abstract
The shear performance of fiber-reinforced seawater sea-sand concrete (FR-SWSSC), a potential sustainable alternative to traditional concrete, requires comprehensive analysis of its shear behaviour to facilitate its integration into structural design practices. This study investigated the synergistic effects of fiber hybridization on the shear performance of SWSSC. Micro-fibers—basalt fibers (BF), polyvinyl alcohol (PVA), and short polypropylene (PPS)—and macro-fibers—twisted polypropylene (TPPL) and long polypropylene (PPL)—were utilized to explore the combined influence of fiber size and type. A modified shear test method, supported by experimental analysis and finite element modeling , was developed for improved accuracy. The results demonstrated a positive synergistic effect of PVA-based hybrids over mono-fibers. The PPL/PVA hybrid increased shear strength by 28 % and 23 % and shear toughness by 159 % and 46 % compared to mono PVA and PPL fibers, respectively. The high chemical bonding strength of PVA fibers improved concrete interlocking and reinforced the bonding of macro-fibers, contributing to this positive synergy. The TPPL/PVA hybrid also enhanced shear performance compared to plain SWSSC, which demonstrated the highest shear enhancement in this study. Moreover, the PVA/BF hybrid increased shear strength by 14 %–24 % and 6 %–16 % compared to mono PVA and BF fibers, respectively. These findings highlight fiber hybridization as a viable approach to improving the shear…
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Basalt fibers have high tensile strength, relatively high elastic modulus, high thermal stability, and high resistance to chemical attack and corrosion.
“Basalt fibers have great tensile strength, comparatively high elastic modulus, high thermal stability, and high resistance to chemical attack and corrosion [24].”
From Stress–Strain State and Strength of Fiber-Reinforced Concrete Beams with Basalt, Steel, and Polypropylene Fibers (2026) · cites this paper as [24]
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Martazaev, A., & Razzakov, S. (2026) · Construction Materials · doi:10.3390/constrmater6020019 · Cited by 3 · see citing works
- Authors
- Mashayekhi, A., Hassanli, R., Zhuge, Y., Ma, X., Chow, C. W. K., Bazli, M., & Manalo, A.
- Venue
- Construction and Building Materials
- Publisher
- Elsevier BV
- Published
- 2025-04
- Volume
- 472
- Pages
- 140955
- ISSN
- 0950-0618
- Cited by
- 5
- References
- 0
- Language
- en
- Licence
- Funders
- University of South Australia
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