Mechanism Study of Differential Permeability Evolution and Microscopic Pore Characteristics of Soft Clay under Saturated Seepage: A Case Study in Chongming East Shoal DOI Open Access

Meng Yao,

Qing Wang, Qingbo Yu

et al.

Water, Journal Year: 2023, Volume and Issue: 15(5), P. 968 - 968

Published: March 2, 2023

Artificial reclamation is one of the main means land expansion in coastal cities. However, permeability underlying soft clay (USC), derived from dredged load, has not been paid enough attention, although it closely related to long-term deformation and stability foundation soil. Hence, this paper analyzes relationship between characteristics microscopic pore USC Chongming East Shoal (CES), a typical multi-phase area, through variable head test, mercury intrusion porosimetry (MIP) scanning electron microscope (SEM) test. Furthermore, grey relation entropy Pearson correlation analysis are implemented analyze influence micropore parameters on permeability. The results revealed that seepage process showed transition unstable relatively stable seepage. Meanwhile, coefficient (PC) attenuated with time cyclically, indicating alternating effect closed opened channels. During seepage, particles could be entrained by water intercepted pores, thus clogging Then, increased pressure break new degree was positively correlated average cycle period PCs, also present stage PCs. A lower mesopores content, higher fractal dimension, aggregated flocculate microstructure promote result efficiency. Affected channels, may face potential future, which needs further investigation.

Language: Английский

Effect of freeze–thaw–vacuum pretreatment modes on the performance of sludge reduction DOI

Yajun Wu,

Yaoyi Wang, Xudong Zhang

et al.

Acta Geotechnica, Journal Year: 2023, Volume and Issue: 19(5), P. 2935 - 2953

Published: Sept. 25, 2023

Language: Английский

Citations

7
Water–salt migration and deformation characteristics in gravelly sulfate saline soil under the effect of localized fine sand accumulation DOI

Xinyan Ma,

Juyuan Cao,

Jinbao Han

et al.

Cold Regions Science and Technology, Journal Year: 2024, Volume and Issue: 225, P. 104269 - 104269

Published: July 8, 2024

Language: Английский

Citations

2
Experimental Study on the Dynamic Characteristics of Coarse-grained Saline Soil Embankments in the High-cold Saline Lake Area under Freeze-thaw Cycle Action DOI Creative Commons
Dongqing Wang, Yang Xiao-hua, Qi Wan

et al.

Case Studies in Construction Materials, Journal Year: 2024, Volume and Issue: unknown, P. e04040 - e04040

Published: Nov. 1, 2024

Language: Английский

Citations

2
Compression and water retention behavior of saline soil improved by MICP combined with activated carbon DOI Creative Commons

M. Z. Zhang,

C.F. Chiu,

Yu-Guang Zhou

et al.

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: Dec. 28, 2024

Saline soil is widely distributed in China and poses significant challenges to engineering construction due its harmful effects, such as salt heaving, dissolution collapse, frost heaving. The Microbial-Induced Calcite Precipitation (MICP) method an emerging environmental-friendly modification that can reduce or eliminate the environmental hazards of saline soil. To verify feasibility MICP for improving properties soil, laboratory tests were conducted study effects content, activated carbon content freeze-thaw cycles on compression water retention behavior modified following conclusions drawn: calcium carbonate produced from cement particles structures, which resists expansion damage caused by heaving reduces compressibility. Additionally, fill pores improves capacity addition enhance reaction leading further reduction compressibility enhancement

Language: Английский

Citations

2
Mechanism Study of Differential Permeability Evolution and Microscopic Pore Characteristics of Soft Clay under Saturated Seepage: A Case Study in Chongming East Shoal DOI Open Access

Meng Yao,

Qing Wang, Qingbo Yu

et al.

Water, Journal Year: 2023, Volume and Issue: 15(5), P. 968 - 968

Published: March 2, 2023

Artificial reclamation is one of the main means land expansion in coastal cities. However, permeability underlying soft clay (USC), derived from dredged load, has not been paid enough attention, although it closely related to long-term deformation and stability foundation soil. Hence, this paper analyzes relationship between characteristics microscopic pore USC Chongming East Shoal (CES), a typical multi-phase area, through variable head test, mercury intrusion porosimetry (MIP) scanning electron microscope (SEM) test. Furthermore, grey relation entropy Pearson correlation analysis are implemented analyze influence micropore parameters on permeability. The results revealed that seepage process showed transition unstable relatively stable seepage. Meanwhile, coefficient (PC) attenuated with time cyclically, indicating alternating effect closed opened channels. During seepage, particles could be entrained by water intercepted pores, thus clogging Then, increased pressure break new degree was positively correlated average cycle period PCs, also present stage PCs. A lower mesopores content, higher fractal dimension, aggregated flocculate microstructure promote result efficiency. Affected channels, may face potential future, which needs further investigation.

Language: Английский

Citations

6