Review of polymer-amended bentonite: Categories, mechanism, modification processes and application in barriers for isolating contaminants

Q Cui, B Chen - Applied Clay Science, 2023 - Elsevier
Polymer-amended bentonite is a kind of high-performance bentonite material, which has
been widely researched and applied in barrier engineering. This paper summarizes the …

State-of-the-art review on pressure infiltration behavior of bentonite slurry into saturated sand for TBM tunneling

S Qin, Y Cheng, WH Zhou - Smart Construction and Sustainable Cities, 2023 - Springer
The pressure infiltration behavior of bentonite slurry (a mixture of water and bentonite) in
front of a slurry tunnel boring machine (TBM) determines the effectiveness of tunnel face …

Novel composite polymer-amended bentonite for environmental containment: Hydraulic conductivity, chemical compatibility, enhanced rheology and polymer stability

XL Fu, H Zhuang, KR Reddy, NJ Jiang, YJ Du - Construction and Building …, 2023 - Elsevier
This study developed a novel composite polymer-amended bentonite consisting of two
linear polymers (ie, polyanionic cellulose (PAC) and hydroxypropyl methylcellulose …

Hydraulic conductivity of sand/biopolymer-amended bentonite backfills in vertical cutoff walls permeated with lead solutions

XL Fu, SQ Shen, KR Reddy, YL Yang… - Journal of Geotechnical …, 2022 - ascelibrary.org
This study investigated the hydraulic conductivity and microscopic properties of two backfills,
conventional sand/bentonite (SB) and sand/xanthan gum (XG)-amended bentonite/sand …

Hydraulic conductivity, microstructure, and compositional changes of sand–bentonite backfill in cutoff walls exposed to organic acids

XL Fu, ZY Jiang, KR Reddy, K Ruan… - Journal of Geotechnical …, 2023 - ascelibrary.org
Leachate, consisting of organic acids such as acetic acid (AA) and oxalic acid (OA),
commonly is released into groundwater from municipal solid waste dumps and uncontrolled …

Recycling the discharged soil from EPBS tunnels as a soil conditioner and its rheological behaviors

X Wang, W Zhao, Z Wang, Z Wang, D Sun… - Journal of Cleaner …, 2023 - Elsevier
Earth pressure balance shield (EPBS) has become the mainstream construction method for
metro tunnels in China, which inevitably generates a large amount of discharged soil …

Membrane behavior and diffusion properties of sand/SHMP-amended bentonite vertical cutoff wall backfill exposed to lead contamination

XL Fu, R Zhang, KR Reddy, YC Li, YL Yang, YJ Du - Engineering Geology, 2021 - Elsevier
This paper presents a laboratory experimental investigation on the membrane behavior and
diffusion properties of sand/sodium hexametaphosphate (SHMP)-amended bentonite …

Effect of polyanionic cellulose modification on properties and microstructure of calcium bentonite

FJ Shi, SJ Feng, QT Zheng, XL Zhang, HX Chen - Applied Clay Science, 2022 - Elsevier
Soil-bentonite slurry trench cutoff walls have been extensively used as engineered barriers
for contaminant containment. In some regions without appropriate sodium bentonite (NaB) …

Polymer elution and hydraulic conductivity of polymer-bentonite geosynthetic clay liners to bauxite liquors

X Chen, Y Tan, T Copeland, J Chen, D Peng… - Applied Clay …, 2023 - Elsevier
This study investigated the influences of polymer types (Super Absorbent Polymer, SAP and
Polyanionic Cellulose, PAC), preparation methods (dry-mixed, dry-sprinkled, or wet-mixed) …

Assessment of membrane and diffusion behavior of soil-bentonite slurry trench wall backfill consisted of sand and Xanthan gum amended bentonite

H Ni, SQ Shen, XL Fu, CM Wang, YJ Du - Journal of Cleaner Production, 2022 - Elsevier
The diffusion and semi-permeable membrane behavior are significant for evaluating
pollution containment effectiveness of soil-bentonite slurry trench wall backfill (referred to as …