Enhancing Geosynthetic Clay Liner Performance through Modified Bentonite: A Molecular Dynamics Study


  • Jiayi Lu, Teng Wang, Jia Ma Department of Civil, Environmental, and Infrastructure Engineering, University of Science and Technology Liaoning, Anshan, Liaoning, 114010, China


Geosynthetic clay liner, Bentonite modification, Molecular dynamics, Performance enhancement, Environmental protection


Geosynthetic clay liners (GCLs) are crucial components in waste containment systems, offering effective barriers against fluid migration in landfills and other environmental applications. Bentonite, a key constituent of GCLs, possesses desirable properties such as high swelling capacity and low permeability. However, challenges in GCL performance, such as reduced durability and effectiveness under certain conditions, necessitate further enhancement strategies. This paper presents a molecular dynamics study aimed at improving GCL performance through the modification of bentonite. By employing molecular dynamics simulations, we investigate the structural and mechanical properties of modified bentonite at the atomic scale. Various modification techniques, including cation exchange and intercalation, are explored to assess their impact on bentonite's swelling behavior, permeability, and overall performance as part of GCLs. The findings from this study offer valuable insights into the molecular-level mechanisms underlying GCL performance enhancement, providing a foundation for the development of more durable and effective environmental containment systems.