On the Properties of New Polyurethane Fast-Curing Polymer Materials DOI Open Access
Huachao Liu, Jiajun Deng, Shuchen Li

et al.

Materials, Journal Year: 2024, Volume and Issue: 17(24), P. 6231 - 6231

Published: Dec. 20, 2024

A sequences of unconfined compressive strength tests and flexural were conducted in this study to evaluate the curing performance a new type polyurethane sand fast-curing polymer material. The mechanical properties material investigated under different temperatures (−10 °C 60 °C), particle sizes (10–15 mesh, 60–80 100–120 325 mesh), proportions (20% 60%). Additionally, SEM analysis was employed further reveal reinforcement mechanism. results demonstrated that developed exhibited superior applicability across wide temperature range −10 °C. Both solidified increased with increase solidification temperature, resulting improved effects. This best when using within mesh range. As size decreased remaining specifications, there reduction specimen strain an strength, while still maintaining favorable ductility. optimal proportion for 40%. Moreover, nonlinear mathematical relationships between multiple influencing factors established through multivariate regression analysis. consolidation specimens X-shaped conjugate shear failure, which tended occur at weak interface Lastly, Pearson’s correlation revealed strong positive content strength.

Language: Английский

Model tests and numerical analysis of emergency treatment of cohesionless soil landslide with quick-setting polyurethane DOI
Zhichao Zhang, Xuefeng Tang,

Rufa Huang

et al.

Journal of Mountain Science, Journal Year: 2025, Volume and Issue: 22(1), P. 110 - 121

Published: Jan. 1, 2025

Language: Английский

Citations

0
Field-scale testing and numerical simulation of polymer micropiles-reinforced soil-rock bedding slopes DOI
Zhichao Zhang, Xuefeng Tang, Xiang He

et al.

Bulletin of Engineering Geology and the Environment, Journal Year: 2025, Volume and Issue: 84(3)

Published: Feb. 10, 2025

Language: Английский

Citations

0
Optimization of Water Plugging Characteristics and Mechanical Properties of Acrylate Grouting Materials Based on Composite Crosslinking Strategy DOI Open Access

F.X. Yu,

Lijun Qin,

Deqiang Han

et al.

Polymers, Journal Year: 2025, Volume and Issue: 17(6), P. 827 - 827

Published: March 20, 2025

Traditional acrylate grouting materials often suffer from mechanical performance degradation and interfacial bonding failure under long-term water immersion, significantly limiting their application in pressurized environments. This study proposes a composite crosslinking synergistic strategy to address these challenges. By constructing dual-network structure through polyethylene glycol diacrylate (PEG500DA) monofunctional crosslinker (PEG-MA), systematically optimizing the material formulation by regulating triethanolamine content control gelation time, hydraulic stability of was enhanced. Increasing concentration 35% achieved an optimal balance between slurry viscosity (8.3 mPa·s) performance, with tensile strength reaching 76 kPa compressive sand-solidified body measuring 440 kPa. At PEG500DA/PEG-MA ratio 2:3, exhibited both high (78 kPa) exceptional ductility (elongation at break > 407%), 336 for body. When total exceeded 5%, 28-day absorption volume expansion rates were effectively reduced 12% 11%, respectively. Under simulated conditions, modified demonstrated water-pressure resistance 300 after 1 day, stabilizing 350 56 days—a 75% improvement over commercial products. provides innovative solution anti-seepage applications complex hydrogeological environments, offering significant advancements design engineering reliability.

Language: Английский

Citations

0
Study on the working performance and microscopic mechanism of high-performance grouting material (HPGM) reinforced dense fine sand layer DOI
Cheng Chen, Hongpeng Lai, Yuyang Liu

et al.

Construction and Building Materials, Journal Year: 2024, Volume and Issue: 449, P. 138518 - 138518

Published: Sept. 29, 2024

Language: Английский

Citations

2
Study on Performance and Engineering Application of Novel Expansive Superfine Cement Slurry DOI Open Access
Xiao Feng,

Xiaowei Cao,

Lianghao Li

et al.

Materials, Journal Year: 2024, Volume and Issue: 17(22), P. 5597 - 5597

Published: Nov. 15, 2024

Superfine cement is widely used in building reinforcement and repair, special concrete manufacturing, environmental protection engineering due to its high toughness, durability, good bonding strength, friendliness. However, there are some problems superfine slurry, such as bleeding rate, prolonged setting time, consolidated body volume retraction. In this article, on the premise of using excellent injectability fluidity, expansion rate novel expansive slurries with varying proportions were analyzed by adding agent UEA, naphthalene-based water reducer FDN-C, triisopropanolamine accelerating TIPA. The results show that under most mix ratios, fluidity slurry initially increase decrease rising water-reducing dosage. initial time generally decreases dosage, reaching a minimum value 506 min, representing 33.68% reduction compared benchmark group (traditional cement). Under normal conditions, compressive strength net consolidation positively correlated achieving maximum strengths 8.11 MPa at three days 6.93 28 days; these values respectively higher 6.7 2.6 those group. On seventh day, traditional solidified sand ranges from −0.19% −0.1%, while for corresponding formed between 0.41% 1.33%, difference 0.6–1.43%. After on-site treatment sand-gushing strata, core monitor inspection hole exceeds 70%. permeability coefficient stratum range 1.47 × 10−6 8.14 cm/s, resulting nearly thousandfold impermeability original state. Hence, findings research hold practical importance future application materials development or repair.

Language: Английский

Citations

1
First Application of Polymer in Slope Reinforcement and Field Direct Shear Test DOI

Changguang Qi,

Mengqiang Shen,

Zhichao Zhang

et al.

Published: Jan. 1, 2024

Download This Paper Open PDF in Browser Add to My Library Share: Permalink Using these links will ensure access this page indefinitely Copy URL DOI

Language: Английский

Citations

0
Study on the Working Performance and Microscopic Mechanism of High-Performance Grouting Material (Hpgm) Reinforced Dense Fine Sand Layer DOI
Cheng Chen, Hongpeng Lai, Yuyang Liu

et al.

Published: Jan. 1, 2024

Language: Английский

Citations

0
Experimental study on mechanical behavior of silty-fine sand reinforced by a new type of permeable polymer material under dry-wet cycles DOI Open Access
Yuke Wang, Liao Zhang,

Xinming Qu

et al.

SOILS AND FOUNDATIONS, Journal Year: 2024, Volume and Issue: 64(6), P. 101519 - 101519

Published: Oct. 7, 2024

Language: Английский

Citations

0
Ester-Modified Sodium Silicate Grout Material for Moraine Stabilization: Synthesis and Freeze-Thaw Resistance DOI Open Access
Chong Chen, Aixiang Wu, Shaoyong Wang

et al.

Materials, Journal Year: 2024, Volume and Issue: 17(22), P. 5512 - 5512

Published: Nov. 12, 2024

To achieve effective consolidation of fine particles in moraine and enhance the freeze-thaw resistance consolidated body, this study developed a novel grouting material using sodium silicate, lipid-based curing agents, acidic catalysts. The gelation time rheological properties were tested. was studied through changes uniaxial compressive strength (UCS) after cycles, while mechanism analyzed X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM). experimental results indicate that material’s can be controlled between 30s 1600s, with an initial viscosity ranging from 5.9 to 9.8 mPa·s. Predictive models for these two indicators established, variance analysis revealed influence ranking time: phosphoric acid dosage had greatest effect, followed by EGDA content, Baume degree silicate having least effect. positively correlated exhibited exponential growth over time. addition enhanced UCS 450%, reaching 1.2 MPa. During degradation body reduced 10% 30%. Microstructural tests showed promotes silica gel formation creates network structure unreacted forming dense particles, thereby enhancing resistance. These findings provide design references theoretical support cold regions.

Language: Английский

Citations

0
Impact of inlet flow velocity on sediment reduction in pump station forebays DOI
Qiao Qiao, Haidong Wang, Lingxiao Huang

et al.

Physics of Fluids, Journal Year: 2024, Volume and Issue: 36(11)

Published: Nov. 1, 2024

Pump stations are critical for effective water management in China, particularly sediment-laden regions such as Ningxia, where vortex flow patterns forebays result sediment deposition and diminished operational efficiency. Through this research endeavor, numerical simulations engineering measurements were employed to systematically analyze the causes of adverse induced by water-sediment two-phase a sudden expansion pump station located focusing on seven cases that examined behavior concentration. Results indicate forward forebay, inflow velocity at diversion channel entrance is correlated with suspended Compared other cases, case 5 produces smaller has minimal impact pattern exhibits lowest Applying Q-criterion reveals possesses smallest structure volume. Additionally, quadratic polynomial relationship between inlet efficiency was established, further confirming accuracy 5. At an 1.065 m/s, markedly reduced strength decreased, enabling particles escape, thereby enhancing station. This study offers optimized conditions theoretical guidance high-sediment regions.

Language: Английский

Citations

0