Shear strength characteristics of basalt fiber-reinforced loess

Chen, Chong-kun; Li, Gang; Liu, Jia; Xi, Yu; Nan, Jing-jing

doi:10.1038/s41598-023-43238-z

Cited by 5 publications

(3 citation statements)

References 33 publications

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“…Compared to untreated soil, when the length was 4, 8, or 12 mm and the fiber content was equal to 0.20%, the maximum strength increased by 16.50%, 32.70%, and 46.20%, respectively. This is similar to the conclusion of the reference [25]. The primary cause of this behavior is that the fiber and soil particles form a compound structure, enhancing the soil's shear strength.…”

Section: Analysis Of Shear Strength Characteristics Of Basalt Fiber-s...supporting

confidence: 89%

“…The transformation system of guar gum and basalt fiber bear load together. According to the results presented above, the hypothesis is that the cGFR cohesion of reinforced soil is a function of GC, FC, FL, and d [25].…”

Section: Model Establishmentmentioning

confidence: 98%

“…It is a multifunctional fiber material that is bronze in appearance, fluffy after disassembly, and can sink in water. The mechanical and physical properties of the basalt fiber are listed in Table 2 [25].…”

Section: Test Materialsmentioning

confidence: 99%

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Study on the Shear Strength of Loess Solidified by Guar Gum and Basalt Fiber

Xi,

Sun,

et al. 2024

Materials

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Loess is widely distributed in the northwest and other regions, and its unique structural forms such as large pores and strong water sensitivity lead to its collapsibility and collapse, which can easily induce slope instability. Guar gum and basalt fiber are natural green materials. For these reasons, this study investigated the solidification of loess by combining guar gum and basalt fiber and analyzed the impact of the guar gum content, fiber length, and fiber content on the soil shearing strength. Using scanning electron microscopy (SEM), the microstructure of loess was examined, revealing the synergistic solidification mechanism of guar gum and basalt fibers. On this basis, a shear strength model was established through regression analysis with fiber length, guar gum content, and fiber content. The results indicate that adding guar gum and basalt fiber increases soil cohesion, as do fiber length, guar gum content, and fiber content. When the fiber length was 12 mm, the fiber content was 1.00%, and the guar gum content was equal to 0.50%, 0.75%, or 1.00%, the peak strength of the solidified loess increased by 82.80%, 85.90%, and 90.40%, respectively. According to the shear strength model, the predicted and test data of the shear strength of solidified loess are evenly distributed on both sides of parallel lines, indicating a good fit. These findings are theoretically significant and provide practical guidance for loess solidification engineering.

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Section: Analysis Of Shear Strength Characteristics Of Basalt Fiber-s...supporting

confidence: 89%

Section: Model Establishmentmentioning

confidence: 98%

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Study on the Shear Strength of Loess Solidified by Guar Gum and Basalt Fiber

Xi,

Sun,

et al. 2024

Materials

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Study of the law of strength attenuation and microstructure damage to cement improved loess under acid rain erosion

Xu,

Wu,

et al. 2024

Environ Earth Sci

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Failure Process of High-Loess-Filled-Slopes (HLFSs) during Precipitation under Different Mitigation Measures

Zhu,

Zhuang,

Zhao

2024

Applied Sciences

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The problems of gully and soil erosion caused by large-scale urban construction and agricultural development in China have become more and more serious in recent years. In an effort to solve this problem, a series of gully stabilization and highland protection projects have been carried out on the Loess Plateau, and this has resulted in a large number of high-loess-filled-slopes (HLFSs). Although these filled slopes uses several different mitigation measures, the HLFSs have been eroded and destroyed under the action of water. In order to study the influence of different mitigation measures on the stability of HLFSs and their failure process, this paper uses a flume test of the effects of various mitigation measures on this failure process. The results show that: (1) the failure processes of slopes with different mitigation measures are obviously different. Slope deformation u with a declining gradient mitigation mainly occurs on the surface of the slope body, and although slope erosion is quite serious, the slope does not fail as a whole. Slopes with a stepwise drainage channel mitigation show little erosion, but material can easily slide along the horizontal drainage channels. (2) The slope deformation process is correlated with changes in pore-water pressure. When local instability occurs, there is always a pre-process of continuously rising pore-water pressure. When a failure occurs, the pore-water pressure of the soil at each position of the slope body suddenly fluctuates under instantaneous excitation. (3) The response of soil pore pressure and the development characteristics of tension cracks affect the deformation of the slopes, which is also the cause of the differences slope instability caused by different mitigation measures. These research results provide reference for the protection of HLFS engineering projects from heavy rains.

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Shear strength characteristics of basalt fiber-reinforced loess

Cited by 5 publications

References 33 publications

Study on the Shear Strength of Loess Solidified by Guar Gum and Basalt Fiber

Study on the Shear Strength of Loess Solidified by Guar Gum and Basalt Fiber

Study of the law of strength attenuation and microstructure damage to cement improved loess under acid rain erosion

Failure Process of High-Loess-Filled-Slopes (HLFSs) during Precipitation under Different Mitigation Measures

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