The Effect of Biopolymer Pore Fluids on Soil Properties using Molecular Dynamics Simulations
The Effect of Biopolymer Pore Fluids on Soil Properties using Molecular Dynamics Simulations
Amending the composition of pore fluids by adding biopolymers can increase soil cohesion and improve the properties of soils significantly. These biopolymers form biogels that absorb large amounts of water and are sustainable alternatives to concrete for soil-strengthening purposes. These advancements, however, rely on trial-and-error methods to identify the most suitable biopolymer and its concentration to avoid strength losses in soil. Here, we use coarse-grained molecular dynamics to study the effect of adding charged biopolymers and clay fillers on the properties of pore fluids. We investigate the effect of charge distribution on biopolymer gelation and related properties like viscosity, network formation, and polymer adsorption. We reveal at larger filler charges, partially-charged chains produced stronger gels when compared to fully-charged chains. The assembly of nanofillers is also an important determinant of gel physical properties which is mediated by the types of interactions between chains and nanofillers.
Shoumik Saha; Sherif L. Abdelaziz; Dilip Gersappe
2025 International Conference on Bio-mediated and Bio-inspired Geotechnics (ICBBG2025)
Special symposium: Biopolymer treated soils
https://doi.org/10.53243/ICBBG2025-123
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