聚丙烯纤维对流态固化土流变及力学性能的影响

doi:10.11896/cldb.24080171

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Abstract Fluid-consolidated soil is increasingly valued because of its simple preparation process and equipment, the possibility of utilising engineering spoils in the vicinity, the low cost of secondary excavation, and the high mobility and homogeneity of the soil. In this work, engineering soil, polypropylene fiber and MBER soil curing agent were used as materials to prepare fluid-consolidated soil. The effects of different fiber dosage and fiber length on the rheological and strength properties of fluid-consolidated soil and their mechanisms were investigated through the flow test, rheological test, unconfined compressive strength test and SEM-EDS test. The results show that: (1) With the increase of fiber amount and fiber length, the slurry fluidity decreases, while viscosity, plastic viscosity and yield stress increase;the correlation between fluidity, plastic viscosity and yield stress is greater than 0.65, which is strongly correlated. (2) The 7 d unconfined compressive strength of cured soil increases with the increase of fiber amount when the fiber length is 3 mm and 6 mm, and then decreases with the increase of amount when the fiber length is 9 mm, 12 mm and 15 mm;it increases with the increase of fiber length when the fiber dosage is 0.2% and 0.4%, and then decreases with the increase of fiber length when the fiber dosage is 0.6% and 0.8%. (3) The action mechanism of polypropylene fiber on fluid-consolidated soil has two main aspects:during the mixing stage, the fibers entangle with the slurry, creating friction that hinders flow; the fibers form a three-dimensional network structure that wraps around the slurry, further preventing shear deformation of the slurry. In the maintenance and shaping stage,the fibers are bonded with hydration products, which restricts the relative sliding of the fiber and the soil; the fibers form a three-dimensional mesh structure inside the soil, which restrains the deformation and displacement of the soil; the fiber round tubes are filled with hydration products, which further enhances the toughening effect of the fiber.

Key words： polypropylene fiber fiber length fiber content rheological property mechanical property microstructure

Published: Online: 2025-10-27

CLC number:

TU502+.4

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	Articles by authors
	JU Peng
	LEI Baofeng
	JI Yuyang
	FAN Henghui

Cite this article:

JU Peng,LEI Baofeng,JI Yuyang, et al. Effect of Polypropylene Fibers on Rheological and Mechanical Properties of Fluid-consolidated Soil[J]. Materials Reports, 2025, 39(20): 24080171-8.

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https://www.mater-rep.com/EN/10.11896/cldb.24080171 OR https://www.mater-rep.com/EN/Y2025/V39/I20/24080171

1 Ren C, Yang C, Ben Y L, et al. Theoretical Research in Urban Construction, 2022, 29, 82(in Chinese).
任超, 杨春, 镡兰宇, 等. 城市建设理论研究, 2022, 29, 82.
2 Xiang C T, Ren X H, Mao N M. Value Engineering, 2023, 42(1), 77(in Chinese).
项崇涛, 任小虎, 毛耐民. 价值工程, 2023, 42(1), 77.
3 Zhou Y Z, Wang J Z. New Building Materials, 2019, 46(10), 117(in Chinese).
周永祥, 王继忠. 新型建筑材料, 2019, 46(10), 117.
4 Wang L H. Analysis on construction mechanics effects and parameter optimization of cover-excavation rapid-assembly support integrated machine for urban pipe. Master’s Thesis, Beijing Jiaotong University, China, 2012(in Chinese).
王灵海. 城市管廊盖挖快速装配支护一体机施工力学效应及参数优化分析. 硕士学位论文, 北京交通大学, 2012.
5 Zhu Y X, Bian Y, Min F L, et al. China Civil Engineering Journal, 2020, 53(S1), 245(in Chinese).
朱瑜星, 卞怡, 闵凡路, 等. 土木工程学报, 2020, 53(S1), 245.
6 Wang H S, Wang P, Tang C S, et al. Geological Journal of China Universities, 2018, 24(4), 613 in Chinese).
王宏胜, 王鹏, 唐朝生, 等. 高校地质学报, 2018, 24(4), 613.
7 Tang C S, Shi B, Gao W, et al. Geotextiles and Geomembranes, 2007, 25, 194.
8 Mehmet F, Siddika N. Arabian Journal for Science and Engineering, DOI: 10. 1007/s13369-023-08688-7
9 Ma X Y, Yang X J, Fan H H, et al. Yellow River, 2023, 45(11), 122(in Chinese).
马兴业, 杨秀娟, 樊恒辉, 等. 人民黄河, 2023, 45(11), 122.
10 Wei L, Cai S X, Zhang L, et al. Rock and Soil Mechanics, 2022, 43(12), 3241(in Chinese).
魏丽, 柴寿喜, 张琳, 等. 岩土力学, 2022, 43(12), 3241.
11 Wang G, Pei X J, Yang K. Geological Hazards and Environmental Protection, 2013, 24(3), 109(in Chinese).
王刚, 裴向军, 杨珂. 地质灾害与环境保护, 2013, 24(3), 109.
12 Yang Z H, Zhu T, Zhang D S, et al. Materials Reports, 2025, 39(15), 24050076(in Chinese).
杨正辉, 朱涛, 张东生, 等. 材料导报, 2025, 39(15), 24050076.
13 Yan R F, Yin S H, Liu J M, et al. Journal of Central South University (Science and Technology) 2022, 53(4), 1450(in Chinese).
严荣富, 尹升华, 刘家明, 等. 中南大学学报(自然科学版), 2022, 53(4), 1450.
14 Zhang Z Y. Research on thixotropic properties of paste slurry and pipeline resistance in deep mines. PH. D. Thesis, North China University of Science and Technology, China, 2023(in Chinese).
张友志. 深井矿山膏体浆料触变特性与管输阻力研究. 博士学位论文, 华北理工大学, 2023.
15 Li J, Zhang X, Pang S, et al. Journal of Building Engineering, 2024, 98, 111072.
16 Huang Z Q, Tong Z F, Li X H, et al. Journal of Chemical Engineering of Chinese Universities, 2006(3), 449(in Chinese).
黄祖强, 童张法, 黎铉海, 等. 高校化学工程学报, 2006(3), 449.
17 Anandha. Rheology of fluid, semisolid, and solid foods, Food Engineering Series USA, 2014, pp. 19.
18 Zhao B C, Chen P, Zhai D, et al. Safety in Coal Mines, 2023, 54(10), 117(in Chinese).
赵兵朝, 陈攀, 翟迪, 等. 煤矿安全, 2023, 54(10), 117.
19 Sun F F. Science & Technology Information, 2010(17), 880(in Chinese).
孙芳芳. 科技信息, 2010(17), 880.
20 Ruan B, Deng L F, Ma C, et al. Journal of Railway Science and Engineering, 2017, 14(7), 1415 in Chinese).
阮波, 邓林飞, 马超, 等. 铁路科学与工程学报, 2017, 14(7), 1415.
21 Wang Y S, Liu Z Q, Wan W L, et al. Construction and Building Materials, 2023, 393, 132133.
22 Tang C S, Shi B, Gao W. Journal of Engineering Geology, 2007(1), 108(in Chinese).
唐朝生, 施斌, 高玮. 工程地质学报, 2007(1), 108.
23 Xiao Y, Tong L Y, Che H B, et al. Construction and Building Materials, 2022, 344, 128242.
24 Pang S, Li J, Xie F, et al. Journal of Building Engineering, 2024, 96, 110549.