Compressive and Shear Properties of Fiber-Reinforced Stabilized Sulfate Saline Soil

WEI Li; ZHAO Yaping; BU Chenchen; DONG Shuai; LIU Qingya; ZHAO Xi; CHAI Shouxi

doi:10.3724/j.gyjzG25063003

Volume 56 Issue 10

Oct. 2026

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WEI Li, ZHAO Yaping, BU Chenchen, DONG Shuai, LIU Qingya, ZHAO Xi, CHAI Shouxi. Compressive and Shear Properties of Fiber-Reinforced Stabilized Sulfate Saline Soil[J]. INDUSTRIAL CONSTRUCTION, 2026, 56(10): 206-213. doi: 10.3724/j.gyjzG25063003

Citation:

WEI Li, ZHAO Yaping, BU Chenchen, DONG Shuai, LIU Qingya, ZHAO Xi, CHAI Shouxi. Compressive and Shear Properties of Fiber-Reinforced Stabilized Sulfate Saline Soil[J]. INDUSTRIAL CONSTRUCTION, 2026, 56(10): 206-213. doi: 10.3724/j.gyjzG25063003

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Compressive and Shear Properties of Fiber-Reinforced Stabilized Sulfate Saline Soil

doi: 10.3724/j.gyjzG25063003

1. School of Civil Engineering, Tianjin Chengjian University, Tianjin 300384, China;
2. School of Geology and Geomatics, Tianjin Chengjian University, Tianjin 300384, China

Received Date: 2025-06-30
Available Online: 2026-11-06

Abstract

Abstract

Sulfate saline soil， which is widely distributed along the West-East Gas Pipeline in Gansu Province， China， poses a serious threat to the stability of the pipeline foundation due to its undesirable characteristics， such as salt expansion， collapsibility， and corrosiveness. To address this issue， the sulfate saline soil was stabilized with lime， modified polyvinyl alcohol （SH agent）， and fibers. Unconfined compressive strength tests， triaxial compression tests， and scanning electron microscopy （SEM） observations were then conducted to investigate the mechanical properties and reinforcement mechanisms of the fiber-reinforced stabilized soil. The results showed that as the contents of lime and SH agent increased， the compressive strength， cohesion， and internal friction angle of the stabilized soil first increased and then decreased， with the optimal content being 10% lime and 2% SH agent. With increasing lime content， the soil exhibited higher brittleness and more cracking， whereas the SH agent enhanced plasticity. The fibers improved crack resistance by bridging rupture surfaces， thereby delaying sample failure. Three synergistic mechanisms collectively enhanced the soil’s strength and stability： lime-induced cementation； the SH agent-enhanced particle bonding through the formation of thin films and silk-like networks； and fiber-related effects， including interfacial friction and three-dimensional confinement.
- sulfate saline soil,
- fiber-reinforced soil,
- SH stabilizing agent,
- compressive property,
- shear property

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References(18)

References

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