Diffusion law of nonaqueous reactive expansive polymers in sand and gravel media

Abstract

Recently, foamed polymers have been widely used in the repair of underground engineering disasters by grouting (trenchless technology) due to controllable gelation time and self-expansion. However, the grouting process becomes more complicated due to the complex geological conditions and the self-expansion of slurry. Therefore, this paper adopts a self-made visual experimental device with peripheral pressure and water plugging rate (WPR) monitoring functions to study the influence of main influencing parameters (particle size distribution, grouting amount and dynamic water pump pressure (DWPP)) on the spatiotemporal distribution of slurry WPR and diffusion dynamic response (peripheral pressure). The results show that: When grouting amount is 563 g and DWPP is 0.013 MPa, the expansion force of the slurry in the diffusion process is dominant and can significantly change the local sand and gravel skeleton structure. When grouting amount is 563 g, DWPP is 0.013 MPa, and particle size distribution type is III, the flow time of the polymer is shortened, the pores of the gravel are rapidly blocked. Then, the peripheral pressure decreases rapidly with the increase of the distance, and the time to reach the inflection point WPR is shortened. The instantaneous blockage of the pores leads to the delayed transmission of flow field blockage information.

References

[1] ZhouZ-l, ZangH-z, WangS-y, et al.. Filtration behaviour of cement-based grout in porous media [J]. Transport in Porous Media, 2018, 125(3): 435-463

[2] ZhangX, LiS-c, ZhangQ-song. Field test of comprehensive treatment method for mine high pressure fissure water inflow [J]. China Coal Society, 2010, 35(8): 1314-1318

[3] ZhangQ-s, HanW-w, LiS-c, et al.. Comprehensive grouting treatment for water gushing analysis in limestone breccias fracture zone [J]. Chinese Journal of Rock Mechanics and Engineering, 2012, 31(12): 2412-2419

[4] LiB, FangH-y, ZhaiK-j, et al.. Mechanical behavior of concrete pipes with erosion voids and the effectiveness evaluation of the polyurethane grouting [J]. Tunnelling and Underground Space Technology, 2022, 129: 104672

[5] GuoC-c, WangF-ming. Mechanism study on the construction of ultra-thin antiseepage wall by polymer injection [J]. Journal of Materials in Civil Engineering, 2012, 24(9): 1183-1192

[6] LiangJ-s, DuX-m, FangH-y, et al.. Numerical and experimental study of diffusion law of foamed polymer grout in fracture considering viscosity variation of slurry [J]. Tunnelling and Underground Space Technology, 2022, 128: 104674

[7] FanL, ShiN, LiangH, et al.. Repair performance and engineering evaluation of waterproofing polyurethane grouting material in pavements [J]. Journal of Transport Science and Engineering, 2023, 39(4): 24-31

[8] ZhangQ-s, WangH-b, LiuR-tai. Study on Mechanism of porous media infiltration grouting considering slurry diffusion path [J]. Journal of Geotechnical Engineering, 2018, 40(5): 918-924

[9] ZhangL-z, ZhangQ-s, LiuR-tai. Study on the diffusion mechanism of quick setting slurry infiltration grouting considering the temporal and spatial variation of slurry viscosity [J]. Soil Mechanics, 2017, 38(2): 443-452

[10] WangQ-l, ZhuY-q, LiW-jiang. Study on the mechanism of Bingham fluid cylindrical infiltration grouting considering viscosity spatial attenuation[J]. Journal of Rock Mechanics and Engineering, 2022, 41(8): 1647-1658

[11] ShiM-s, YangS-q, WangL-c, et al.. Study on diffusion mechanism of polymer grouting materials in soil [J]. Yellow River, 2021, 43(9): 156-159164

[12] DuplaJ C, CanouJ, GouvenotD. An advanced experimental set-up for studying a monodirectional grout injection process [J]. Proceedings of the Institution of Civil Engineers - Ground Improvement, 2004, 8(3): 91-99

[13] LiS-c, ZhengZ, LiuR-tai. Analysis of diffusion law of porous media infiltration grouting based on percolation effect [J]. Journal of Rock Mechanics and Engineering, 2015, 34(12): 2401-2409

[14] ZhengZ, FanF-s, PanX-d, et al.. Study on grouting penetration rule with filtration effect and grout-water interaction [J]. Arabian Journal of Geosciences, 2021, 14(18): 1830

[15] ZhouZ-l, DuX-m, WangS-y, et al.. Micromechanism of the diffusion of cement-based grouts in porous media under two hydraulic operating conditions: Constant flow rate and constant pressure [J]. Acta Geotechnica, 2019, 14(3): 825-841

[16] ZhouZ-l, DuX-m, WangS-y, et al.. Cement grout transport within sand with fractal characteristics considering filtration [J]. European Journal of Environmental and Civil Engineering, 2019, 23(12): 1497-1519

[17] ZhangY, GuoH, ChenT-lin. Experimental study on effective diffusion distance of cement slurry infiltration grouting in porous media [J]. Journal of Central South University (Natural Science Edition), 2019, 50(10): 2536-2551(in Chinese)

[18] DuX-m, LiuC, WangC-j, et al.. Diffusion characteristics and reinforcement effect of cement slurry on porous medium under dynamic water condition considering infiltration [J]. Tunnelling and Underground Space Technology, 2022, 130: 104766

[19] WangQ-b, ZhuQ-k, ShaoT-s, et al.. The rheological test and application research of glass fiber cement slurry based on plugging mechanism of dynamic water grouting [J]. Construction and Building Materials, 2018, 189: 119-130

[20] FangH-y, LiuK, DuX-m, et al.. Experiment and numerical simulation of water plugging law of permeable polymer in the water-rich sand layer [J]. Scientia Sinica (Technologica), 2023, 53(3): 457-472

[21] FangH-y, LiuC, DuX-m, et al.. Experimental study on the diffusion characteristics of nonaqueous reactive expansive polymers in sand and gravel media under dynamic water conditions [J]. Tunnelling and Underground Space Technology, 2023, 142: 105433

[22] ZhouZ-l, WangP-y, CaiX, et al.. Estimating crack closure and damage stress thresholds of rock during uniaxial compression based on axial plastic strain [J]. Journal of Central South University, 2023, 30(10): 3335-3348

[23] YanR-f, LiuJ-m, YinS-h, et al.. Effect of polypropylene fiber and coarse aggregate on the ductility and fluidity of cemented tailings backfill [J]. Journal of Central South University, 2022, 29(2): 515-527

[24] LuD-c, LiangJ-y, DuX-l, et al.. Fractional elastoplastic constitutive model for soils based on a novel 3D fractional plastic flow rule [J]. Computers and Geotechnics, 2019, 105: 277-290

[25] LuD-c, ZhouX, DuX-l, et al.. A 3D fractional elastoplastic constitutive model for concrete material [J]. International Journal of Solids and Structures, 2019, 165: 160-175

[26] LiangJ-y, LuD-c, ZhouX, et al.. Nonorthogonal elastoplastic constitutive model with the critical state for clay [J]. Computers and Geotechnics, 2019, 116: 103200

[27] ZhouX, LuD-c, DuX-l, et al.. A 3D nonorthogonal plastic damage model for concrete [J]. Computer Methods in Applied Mechanics and Engineering, 2020, 360: 112716

[28] LiangJ-s, MaS-k, DuX-ming. Diffusion model of parallel plate crack grouting based on foaming expansion characteristics of polymer slurry [J]. Mathematics, 2021, 9(22): 2907

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