Article
Engineering, Geological
Qin Li, Jiannan Chen, Craig H. Benson, Daoping Peng
Summary: The high ionic strength of porewater in red mud suppresses montmorillonite swelling, making geosynthetic clay liners (GCLs) too permeable for effective use in red mud disposal facilities. Bentonite-polymer composite GCLs (BPC GCLs) have been developed as more resilient lining materials, with hydraulic conductivity influenced by the leachate's chemical properties and polymer type.
GEOTEXTILES AND GEOMEMBRANES
(2021)
Article
Engineering, Geological
Genaro Gonzalo Carnero-Guzman, Abdelmalek Bouazza, Will P. Gates, R. Kerry Rowe, Rebecca McWatters
Summary: This study investigates the hydration and dehydration behavior of GCL under polar conditions in Antarctica, focusing on summer hydration and winter-summer dehydration cycles. The findings indicate that direct contact with groundwater leads to summer hydration, while low relative humidity environment causes dehydration, depending on the field conditions. Hydration from fine or coarse Antarctic soil is influenced by the original water content and grain size distribution of the subgrade soil, as well as the low relative humidity prevailing in Antarctica.
GEOTEXTILES AND GEOMEMBRANES
(2021)
Article
Engineering, Geological
Mayu Tincopa, Abdelmalek Bouazza
Summary: This paper investigates the water retention curves of geosynthetic clay liners (GCLs) under non-uniform temperature-stress paths, finding that high vertical stresses lead to faster water uptake and low water viscosity caused by high temperatures accelerates water desorption during drying.
GEOTEXTILES AND GEOMEMBRANES
(2021)
Article
Engineering, Geological
Juan Hou, Rui Sun, Craig H. Benson
Summary: A hydrodynamic model was used to simulate the flow in an idealized geosynthetic clay liner (GCL) containing bentonite, and the results suggest that the hydraulic conductivity of GCLs decreases as the bentonite granules hydrate and swell, forming smaller intergranular flow paths. The model also indicates that greater granule swelling is required to achieve low hydraulic conductivity when the bentonite is comprised of larger granules or has a lower density. Furthermore, the model predicts that intergranular pores become extremely small as the hydraulic conductivity approaches 10-11 m/s.
GEOTEXTILES AND GEOMEMBRANES
(2023)
Article
Environmental Sciences
Yu-Ling Yang, Xing-Yuan You, Jian-Nan Chen, Xian-Lei Fu, Yan-Jun Du
Summary: This study evaluated the potential application of a modified sodium bentonite geosynthetic clay liner (GCL) with acid-and-alkaline resistance for containing bauxite residue leachate. The hydraulic conductivity (k) of the GCL was quickly evaluated using different liquids, and the effects of various factors on the conductivity were analyzed. The results showed that the properties of the liquids significantly affected the hydraulic conductivity of the GCL, and further modifications are needed to meet the desired performance.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Engineering, Mechanical
Ting-Ting Li, Zhike Wang, Hao-Kai Peng, Xiayun Zhang, Liwei Wu, Ching-Wen Lou, Jia-Horng Lin
Summary: The study introduces glass-geogrid-reinforced GCLs for enhancing the mechanical properties and impermeability of liners, which can withstand toxic environments and high pressures. Additionally, the durability and heavy metal ions adsorption of these reinforced liners were explored under various simulated conditions.
JOURNAL OF SANDWICH STRUCTURES & MATERIALS
(2021)
Article
Engineering, Geological
Anna Norris, Neelufar Aghazamani, Joseph Scalia, Charles D. Shackelford
Summary: The hydraulic performance of geosynthetic clay liners (GCLs) enhanced with anionic polymers was evaluated under different conditions. The results showed that the hydraulic performance of GCLs to NaCl solution was better than that to CaCl2 solution. Dry sprinkling with poly(acrylic acid) (PA) generally provided the best hydraulic performance, while the viscosity grade of sodium carboxymethylcellulose (CMC) did not affect the hydraulic conductivity of the GCLs.
JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING
(2022)
Article
Engineering, Geological
Q. Wang, A. Bouazza, H. Xie
Summary: This study investigates the gas flow performance of needle-punched geosynthetic clay liners (GCLs) overlap seams and finds that the gas permeability of overlapped seams is higher than intact areas, especially at higher moisture content. Additionally, it is observed that uneven overlapped seams promote gas flow more than flat overlaps. This study highlights the importance of considering the unevenness of GCL panel overlaps when assessing gas migration through cover systems.
GEOSYNTHETICS INTERNATIONAL
(2022)
Article
Engineering, Environmental
Jackeline Gastelo, Dong Li, Kuo Tian, Burak F. Tanyu, Erol Guler
Summary: The hydraulic conductivity of two overlapped needle-punched sodium bentonite (Na-B) geosynthetic clay liners (GCLs) under different confining stresses and permeated with CaCl2 solutions was investigated. The results showed that the flow through the overlap region was not completely vertical in most cases. The horizontal flow through the overlap region reduced significantly with higher confining stresses and lower concentration of CaCl2 solutions.
Article
Engineering, Geological
J-Y Chang, S-J Feng
Summary: The stability of landfills is closely related to the shear strength of liner systems. This study examines the interface shear behavior of a multilayer geosynthetic liner and reveals the transfer of failure surface and the impact of displacement rates on peak and residual strengths. Testing of three single interfaces in the composite liner allows for a rough estimation of the macro shear strengths of multilayer liners.
GEOSYNTHETICS INTERNATIONAL
(2021)
Article
Green & Sustainable Science & Technology
Liang-Tong Zhan, Lin-Feng Cao, Rui Zhao, Zhao-Hua Ding, Shi-Ping Xie, Yun-Min Chen
Summary: This study investigates the influence of geosynthetic clay liner (GCL) overlap on the behavior of vertical barriers. The results show that adding bentonite paste at the overlap significantly reduces the effective hydraulic conductivity of the GCL overlap and increases the breakthrough time of the soil-bentonite cutoff wall. This research provides insights into improving the hydraulic performance of barrier systems.
Article
Engineering, Geological
Shahin Ghazizadeh, Christopher A. Bareither
Summary: This study evaluated the shear behavior and failure mechanisms of composite systems comprised of a geosynthetic clay liner (GCL) and textured geomembrane (GMX). The peak critical shear strength of GCL/GMX composite systems increased with an increase in GMX spike density. The effect of geotextile type and mass per area more profoundly influenced peak critical shear strength at normal stress > 500 kPa.
GEOTEXTILES AND GEOMEMBRANES
(2021)
Article
Multidisciplinary Sciences
I. A. Weerasinghe, C. Gallage, L. Dawes
Summary: This paper discusses the application of geosynthetic clay liners in the geo-environmental industry and explores the impact of overburden confining stress on their hydraulic conductivity. The study suggests that by considering factors such as confining stress, hydration status, and permeant liquid, the hydraulic performance of GCL in the field can be predicted.
Article
Engineering, Geological
R. Kerry Rowe, Seba Hamdan
Summary: The study reported the performance of five different GCLs under simulated wet-dry cycles, showing a significant increase in hydraulic conductivity after a year of accelerated aging. The discussion covers the impact of various factors on GCL hydraulic performance.
GEOTEXTILES AND GEOMEMBRANES
(2021)
Article
Engineering, Geological
Yu Zhang, Yosuke Kinoshita, Tomohiro Kato, Atsushi Takai, Takeshi Katsumi
Summary: This study evaluated the attenuation performance of geosynthetic sorption sheets coated with hydrotalcite as a sorbent against arsenic under different overburden pressure conditions. The results showed that the cumulative sorption masses of arsenic for 200 kPa cases are approximately 10.5-13.3 times greater than that for 10 kPa cases. Under higher loading, the geosynthetic sorption sheet had a more compacted and involved fiber configuration, resulting in a more effective contact between the arsenic solution and hydrotalcite. The presence of partial dissolution of hydrotalcite was confirmed through chemical analysis of the effluent, but hydrotalcite would gradually become stable during continuous use.
GEOTEXTILES AND GEOMEMBRANES
(2023)
Article
Engineering, Geological
R. S. McWatters, R. K. Rowe, V Di Battista, B. Sfiligoj, D. Wilkins, T. Spedding
CANADIAN GEOTECHNICAL JOURNAL
(2020)
Article
Engineering, Geological
Yan Yu, R. Kerry Rowe
Summary: The study examines the influence of co-disposal of MSW and incinerator ash on the clogging of LCSs from landfills. It uses the BioClog model to simulate the fate and transport of leachate constituents, showing that incinerator ash accelerates clogging rate and reduces LCS service life compared to inert daily cover. Means of extending LCS service life are discussed.
CANADIAN GEOTECHNICAL JOURNAL
(2021)
Article
Engineering, Geological
A. Ghavam-Nasiri, A. El-Zein, D. Airey, R. K. Rowe, A. Bouazza
GEOSYNTHETICS INTERNATIONAL
(2020)
Article
Engineering, Geological
R. Kerry Rowe
GEOTEXTILES AND GEOMEMBRANES
(2020)
Article
Engineering, Geological
Yan Yu, R. Kerry Rowe
GEOTEXTILES AND GEOMEMBRANES
(2020)
Article
Engineering, Geological
Buddhima Indraratna, Subhani Medawela, R. Kerry Rowe, Natalie Thamwattana, Ana Heitor
JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING
(2020)
Article
Engineering, Geological
Vanessa Di Battista, R. Kerry Rowe
GEOTEXTILES AND GEOMEMBRANES
(2020)
Article
Engineering, Geological
R. K. Rowe, T. -K. Li
GEOTEXTILES AND GEOMEMBRANES
(2020)
Article
Engineering, Geological
A. S. Acikel, A. Bouazza, W. P. Gates, R. M. Singh, R. K. Rowe
GEOTEXTILES AND GEOMEMBRANES
(2020)
Article
Engineering, Environmental
Qi-Teng Zheng, R. Kerry Rowe, Shi-Jin Feng
Article
Engineering, Geological
Bowei Yu, Abbas El-Zein, R. Kerry Rowe
GEOTEXTILES AND GEOMEMBRANES
(2020)
Editorial Material
Engineering, Geological
R. Kerry Rowe, Chungsik Yoo
GEOTEXTILES AND GEOMEMBRANES
(2020)
Article
Engineering, Geological
Louis King, Daniel King, Abdelmalek Bouazza, Joel Gniel, R. Kerry Rowe
Summary: This paper introduces deformation-dependent arching and membrane action models in the design of geosynthetic reinforced column supported embankments, implementing them within an interaction diagram. It demonstrates the advantages of this design approach through a design example, showing the capability of performing both ultimate and serviceability limit state design.
GEOTEXTILES AND GEOMEMBRANES
(2021)
Article
Engineering, Geological
Genaro Gonzalo Carnero-Guzman, Abdelmalek Bouazza, Will P. Gates, R. Kerry Rowe, Rebecca McWatters
Summary: This study investigates the hydration and dehydration behavior of GCL under polar conditions in Antarctica, focusing on summer hydration and winter-summer dehydration cycles. The findings indicate that direct contact with groundwater leads to summer hydration, while low relative humidity environment causes dehydration, depending on the field conditions. Hydration from fine or coarse Antarctic soil is influenced by the original water content and grain size distribution of the subgrade soil, as well as the low relative humidity prevailing in Antarctica.
GEOTEXTILES AND GEOMEMBRANES
(2021)
Article
Engineering, Geological
R. Kerry Rowe, A. Y. AbdelRazek
Summary: The study showed that the lower the stiffness of the geomembrane (GMB), the lower the interface transmissivity of the multicomponent geosynthetic clay liner (GCL), but this effect diminishes at steady-state and higher stress levels. Textured coating can increase the transmissivity at the GMB/GCL interface.
GEOTEXTILES AND GEOMEMBRANES
(2021)