A Novel Pervious Concrete Improved by Hexagonal Boron Nitride and Basalt Fiber in Mechanical Properties, Permeability, and Micro-Mechanisms DOI Creative Commons

Qianqian Zhan,

Changjun Yin

Buildings, Journal Year: 2024, Volume and Issue: 14(3), P. 778 - 778

Published: March 13, 2024

In order to overcome the limitations of traditional pervious concrete, which is difficult balance in terms both mechanical properties and permeability, this study proposed a novel effective approach improve performances concrete (PC) based on hexagonal boron nitride (h-BN) basalt fibers (BF). The permeability tests PC with single-doped or double-doped h-BN BF were conducted first. Then influence laws content compressive strength, flexural porosity, coefficient for revealed. Finally, micro-mechanism effects explored by using scanning electron microscope an energy dispersive spectrometer. results showed that strength was increased increase content, first then decreased. Meanwhile, Moreover, 22.8 MPa, 5.17 18.5%, 5.09 mm/s, respectively, increases 21.9%, 19.7%, 60.9%, 42.2%, compared ordinary permeable when optimal admixture combination 15% fly ash, 0.08% h-BN, 2.25% BF. This can avoid provide efficient alternative way improving concrete.

Language: Английский

Coarse synthetic fibers (PP and POM) as a replacement to steel fibers in UHPC: Tensile behavior, environmental and economic assessment DOI
Jia-Xiang Lin,

Rui-Hao Luo,

Jia-Ying Su

et al.

Construction and Building Materials, Journal Year: 2024, Volume and Issue: 412, P. 134654 - 134654

Published: Jan. 1, 2024

Language: Английский

Citations

51
Experimental Investigation on the Mechanical Properties of the Frozen Rocks at the Yamal Peninsula, Russian Arctic DOI Creative Commons
В. Л. Трушко, Elena Konstantinovna Baeva, А.В. Блинов

et al.

Eng—Advances in Engineering, Journal Year: 2025, Volume and Issue: 6(4), P. 76 - 76

Published: April 14, 2025

This paper presents laboratory results on the physical–mechanical properties of frozen rocks from Russia’s Yamal Peninsula, aiming to improve foundation design in permafrost. Samples various geological profiles underwent compression and shear tests along freezing surface at −3 °C, following standard protocols. Strength deformation characteristics were established for prevalent rock types (sands, sandy loams, clay clays), revealing links between physical mechanical behavior. The study specifically investigated how salinity degree pore filling with ice/unfrozen water influence modulus, crucial reliability Results demonstrated significant property variability related granulometry, plasticity, porosity, salinity. Deformation modulus generally decreased increasing dispersion, ranging approximately 44 MPa saline sands down 6–14 clays. Shear resistance varied 0.05 0.20 (clays) 0.20–0.30 (sands). depended complexly type, These findings provide valuable data geomechanical modeling bearing capacity assessments pile foundations Arctic regions, particularly Peninsula.

Language: Английский

Citations

1
Experimental study of polyurethane cement composite–reinforced soft soil in the thawed layer in permafrost regions DOI
Yuru Wang, Fujun Niu, Zekun Ding

et al.

Construction and Building Materials, Journal Year: 2024, Volume and Issue: 420, P. 135622 - 135622

Published: March 1, 2024

Language: Английский

Citations

5
The influence of geosynthetic properties on their shear behaviors at the interface with frozen soil DOI
Pengfei He, Guangliang Hou,

Haitao Cao

et al.

Geotextiles and Geomembranes, Journal Year: 2024, Volume and Issue: 53(2), P. 497 - 509

Published: Dec. 1, 2024

Language: Английский

Citations

3
Study of hydrothermal characteristics of large‐scale water conveyance trunk canals in seasonally frozen ground regions under the influence of different initial water contents DOI Creative Commons
Miao Wang,

Mingwei Hai,

Anshuang Su

et al.

River, Journal Year: 2024, Volume and Issue: 3(2), P. 166 - 180

Published: April 28, 2024

Abstract In seasonal frozen soil, freezing and thawing can change the physical mechanical properties affect slope stability. There are complex moisture conditions in main water transfer canal. A study of hydrothermal evolution canals with different initial contents under action is great importance for prevention control canal slides. Hydrothermal coupling models key to revealing canal's evolution. As some modeling parameters current model based on empirical values, particularly those van Genuchten equation, which not necessarily related soil properties, they suitable analyzing canals. This paper determines soil‐water characteristic curve from cumulative particle gradation subsoil, then hydraulic subsoil using VG model, corrects model. The method modifying original, makes more realistically reflect drainage characteristics. During channel slopes (21%, 25%, 29%, 33%, 37%, 41%), temperature field, ice content distributions were investigated. Using V‐G optimal a = 0.06, n 1.2, m 0.17, distribution trends between basically similar. Water will accumulate at bottom as liquid increases boundary.

Language: Английский

Citations

2
Experimental investigation of the roughness, freezing temperature and normal stress on the shear mechanical action of frozen saturated clay-rock interface DOI

Haowei Cai,

Shibing Huang, Yonglong Yang

et al.

Cold Regions Science and Technology, Journal Year: 2024, Volume and Issue: 225, P. 104268 - 104268

Published: July 6, 2024

Language: Английский

Citations

1
Experiment and constitutive modelling of creep deformation in the frozen silt-concrete interface DOI
Fei He,

Qingquan Liu,

Wanyu Lei

et al.

Journal of Mountain Science, Journal Year: 2024, Volume and Issue: 21(9), P. 3172 - 3185

Published: Sept. 1, 2024

Language: Английский

Citations

1
Global and Local Shear Behavior of the Frozen Soil–Concrete Interface: Effects of Temperature, Water Content, Normal Stress, and Shear Rate DOI Creative Commons
Kun Zhang, Jie Yan, Yanhu Mu

et al.

Buildings, Journal Year: 2024, Volume and Issue: 14(10), P. 3319 - 3319

Published: Oct. 21, 2024

The interface between soil and concrete in cold climates has a significant effect on the structural integrity of embedded structures, including piles, liners, others. In this study, novel temperature control system was employed to conduct direct shear tests interface. test conditions included normal stress (25 100 kPa), (ranging from 20 −6 °C), water content (from 10 19%), rates (0.1 1.2 mm/min). Simultaneously, deformation process continuously photographed using modified visual box, non-uniform mechanism analyzed by combining digital image correlation (DIC) technology with photographic data. findings revealed that stress–shear displacement curves did not exhibit discernible peak strength at elevated temperatures, indicating behavior characterized strain hardening. frozen state, however, softened, interfacial ice bonding exhibited positive decreasing temperature. When initial 16% kPa, increased significantly 99.9 kPa 182.9 as dropped °C °C. Both rate were found have marked strength, cohesion being principal factor contributing phenomenon. At 0.1 mm/min, curve showed hardening characteristics, but other rates, strain-softening behavior, softening becoming more pronounced temperatures decreased. Due refreezing ice, residual proportion reduction rate. On mesoscopic level, it evident particles near changes. lower phenomenon became apparent, evidenced periodic changes granular

Language: Английский

Citations

1
A Novel Pervious Concrete Improved by Hexagonal Boron Nitride and Basalt Fiber in Mechanical Properties, Permeability, and Micro-Mechanisms DOI Creative Commons

Qianqian Zhan,

Changjun Yin

Buildings, Journal Year: 2024, Volume and Issue: 14(3), P. 778 - 778

Published: March 13, 2024

In order to overcome the limitations of traditional pervious concrete, which is difficult balance in terms both mechanical properties and permeability, this study proposed a novel effective approach improve performances concrete (PC) based on hexagonal boron nitride (h-BN) basalt fibers (BF). The permeability tests PC with single-doped or double-doped h-BN BF were conducted first. Then influence laws content compressive strength, flexural porosity, coefficient for revealed. Finally, micro-mechanism effects explored by using scanning electron microscope an energy dispersive spectrometer. results showed that strength was increased increase content, first then decreased. Meanwhile, Moreover, 22.8 MPa, 5.17 18.5%, 5.09 mm/s, respectively, increases 21.9%, 19.7%, 60.9%, 42.2%, compared ordinary permeable when optimal admixture combination 15% fly ash, 0.08% h-BN, 2.25% BF. This can avoid provide efficient alternative way improving concrete.

Language: Английский

Citations

0