Mitigating Soil Salinization and Improving Soil Health: The Role of Biochar from Anthracnose-Infected Persimmon Branches DOI
Chenxi Wang,

Gao Hongbing,

Kun Chen

et al.

Published: Jan. 1, 2024

Language: Английский

Performance Analysis of Pipe-Jacking Waste Soils Solidified with Cement under Balanced Earth Pressure Conditions DOI Creative Commons

Xu Youjun,

Zhenyu Li, Zhigang Chen

et al.

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 6, 2024

Abstract The utilization of pipe-jacking soil poses challenges due to its complex composition, which comprises polyacrylamide (PAM) and sodium bentonite (Na-Ben) surfactants, hindering drainage solidification. Improper handling may induce environmental pollution. To address this problem, cement solidification was explored after modification with PAM Na-Ben. By performing indoor resistance tests, freeze–thaw cycles, wet–dry SEM, XRD, IR experiments, it found that within certain ratios, effectively stabilizes waste soil. Specifically, minimally impacts waste-soil strength, whereas Na-Ben slightly reduces it. Microscopic analysis revealed although water absorption hinders hydration reactions, (at lower concentrations) promotes mineral particle cohesion during tends aggregate, leading uneven internal structure inhibiting cementitious product formation

Language: Английский

Citations

0
The influence of freeze-thaw cycles on Se migration and soil microorganisms in northeast paddy soil DOI Creative Commons
Ping Wang,

Jiaxing Yu,

Xiaohui Lu

et al.

Journal of Hazardous Materials Advances, Journal Year: 2024, Volume and Issue: unknown, P. 100551 - 100551

Published: Nov. 1, 2024

Language: Английский

Citations

0
Performance Analysis of Pipe-Jacking Waste Soils Solidified with Quick Lime and Fly Ash under Balanced Earth Pressure Conditions DOI Creative Commons

Youjun Xu,

Zhenyu Li, Zhigang Chen

et al.

ACS Omega, Journal Year: 2024, Volume and Issue: 9(51), P. 50809 - 50819

Published: Dec. 10, 2024

With its advantages of high cross-sectional utilization, shallow depth, and uninterrupted surface road traffic, the pipe-jacking method has been widely used in underground passages, metro stations, other projects. However, this leads to a large volume waste soils that must be processed. Pipe-jacking are different from shield-tunneling soils. Therefore, it is not appropriate simply use same treatment for In study, soil samples were improved with 7% polyacrylamide (PAM) 12% sodium-based bentonite solutions, good performance being achieved. Based on this, quick lime fly ash solidification soils, experiments solution concentrations material additions conducted, involving tests compression, freeze-thaw cycling, wet-dry microstructure. The results indicate within ranges PAM addition ratios applied effects will significantly reduced during improvement processes under balanced earth pressure conditions. Instead, was found there an increase up 16% strength Structural compactness can primarily enhanced by gelatinous PAM, while promote formation hydrated colloids (such as C-S-H) fill pores particles, thereby enhancing stability.

Language: Английский

Citations

0
Mitigating Soil Salinization and Improving Soil Health: The Role of Biochar from Anthracnose-Infected Persimmon Branches DOI
Chenxi Wang,

Gao Hongbing,

Kun Chen

et al.

Published: Jan. 1, 2024

Language: Английский

Citations

0