Construction and Building Materials, Journal Year: 2024, Volume and Issue: 458, P. 139583 - 139583
Published: Dec. 17, 2024
Language: Английский
Construction and Building Materials, Journal Year: 2024, Volume and Issue: 417, P. 135365 - 135365
Published: Feb. 1, 2024
Language: Английский
Citations
11
Physics of Fluids, Journal Year: 2024, Volume and Issue: 36(1)
Published: Jan. 1, 2024
Based on the fluidic jet theory, this study proposes an effective vortical oscillatory grouting technology. The fluid switching mechanism and pressure pulse characteristics are investigated through numerical simulation experiment. slurry diffusion performance of is compared with that steady-pressure under various soil parameters parameters. effects interface behavior also studied. results show growth dissipation vortex within tool generate periodic fluid, which further produces pulses. During grouting, recovery process inside oscillator reduces soil. With increase in porosity particle size, grouted by noticeably reduced. Despite lower soil, demonstrates better performance, owing to dynamic flow field fluctuation. influenced frequency amplitude. When interfaces taken into consideration, different domains exhibit complex patterns. It observed perpendicular direction has a greater influence behavior. more sensitive interface. This expected improve efficiency promote development new
Language: Английский
Citations
7
International Journal of Mechanical Sciences, Journal Year: 2024, Volume and Issue: 271, P. 109115 - 109115
Published: Feb. 16, 2024
Language: Английский
Citations
5
Construction and Building Materials, Journal Year: 2024, Volume and Issue: 424, P. 135941 - 135941
Published: March 26, 2024
Language: Английский
Citations
5
Journal of Materials Research and Technology, Journal Year: 2024, Volume and Issue: 32, P. 1299 - 1309
Published: July 29, 2024
Polyurethane grouting materials are widely utilized in dam restoration projects due to their advantages of early strength, rapid formation, high expansion and excellent impermeability. With the increasing complexity service environment, polyurethane practical engineering influenced by factors such as ambient temperature, humidity, external loads. These influences can lead emergence damage cracks within on surface materials, which subsequently accelerate propagation into macroscopic cracks, resulting deterioration material properties. Consequently, this negatively impacts effectiveness repair. In paper, impact temperature humidity cracking process fracture properties were studied three-point bending test. The findings revealed that had insignificant influence failure morphology consistently exhibited a flat smooth surface. And slight plastic deformation occurred around pore edges temperature. increase degradation matrix ensued, decline load-bearing capacity, toughness, energy, accompanied increased flexural strain. Notably, brittleness became more pronounced at lower temperatures. environment slightly reduced toughness energy materials.
Language: Английский
Citations
4
Developments in the Built Environment, Journal Year: 2025, Volume and Issue: unknown, P. 100647 - 100647
Published: March 1, 2025
Language: Английский
Citations
0
Physics of Fluids, Journal Year: 2024, Volume and Issue: 36(2)
Published: Feb. 1, 2024
Steady pressure grouting exhibits the problems of low efficiency and uneven penetration. Therefore, this paper proposes a novel high-frequency pulsating method to improve these problems. Through extensive experimentation numerical simulations, impact parameters (grouting frequency, amplitude), soil (porosity, particle size), pressure, water–cement ratio, slurry rheological on penetration is investigated. The results indicate that stone body grouted by significantly more uniform has longer distances. During steady grouting, as or ratio increases, prone flow upward along interface between pipe soil, which makes uneven. When employed, tends into resulting in body. In operating conditions described paper, optimal frequency around 3–4 Hz, pulse amplitude approximately 60% constant pressure. also show can increase width up 68%. With porosity size, percentage distance first increases then decreases. with viscosity decreases Bingham (μp τ0). This implies needs certain resistance achieve performance. mechanism analyzed. Pulsating clear blocked particles lead slurry. study provide reference for development new methods equipment.
Language: Английский
Citations
2
Environmental Technology & Innovation, Journal Year: 2024, Volume and Issue: 34, P. 103583 - 103583
Published: March 2, 2024
Horizontal well air sparging (AS) technology has been proven to be efficient in remediating saturated soils and groundwater contaminated with volatile organic compounds (VOCs). Nevertheless, the airflow patterns mechanisms governing uniformity horizontal AS process remain elusive, a quantitative characterization of zone influence (ZOI) yet determined. In this study, we employed both model experiments numerical simulations investigate distribution lateral tubes within porous medium. The parameters such as pressure, flow, inclination angle tubes, diameter medium particles on gas-phase transport was analyzed. results show that flow disrupt gas distribution. ZOI area is observed an oblong shape plane parabolic contour along boundaries. Additionally, mutual identified between airflow. Furthermore, formation preferential near source end. demonstrates positive correlation pressure negative particle diameter. All elucidated above provide valuable information for design theoretical modelling wells remediation.
Language: Английский
Citations
2
Construction and Building Materials, Journal Year: 2024, Volume and Issue: 436, P. 136814 - 136814
Published: June 7, 2024
Language: Английский
Citations
1
Journal of Rock Mechanics and Geotechnical Engineering, Journal Year: 2024, Volume and Issue: unknown
Published: Aug. 1, 2024
Language: Английский
Citations
1