A study was conducted to investigate the multi-scale pore structure-based mechanism controlling the hydraulic conductivity of polymer-enhanced geosynthetic clay liners (GCLs) prepared by the wet-mixed method to bauxite liquors (BLS and BLA). The multi-scale pore structures were evaluated using MIP and N₂GA tests quantitatively. Conventional GCL permeated with BLS had a larger flow path volume than with DI water (0.194 > 0.119 cm³/g), attributed to the bentonite swelling inhibition and the montmorillonite dissolution, leading to the higher hydraulic conductivity (3.0 × 10⁻⁷ > 2.7 × 10⁻¹¹ m/s). Polymer-enhanced GCLs developed more micropores and had a smaller quantity proportion and volume of flow paths since polymer formed more micropores to clog pores, contributing to a lower hydraulic conductivity than conventional GCL to BLS. The hydraulic conductivity of polymer-enhanced GCL to BLS (ionic strength: 622.5 mM) was higher than that to BLA (156.9 mM) (2.6 × 10⁻⁹ > 6.0 × 10⁻¹² m/s), given that the coiled or contracted polymer conformation left a smaller quantity proportion (5.54% < 6.71%) and volume (0.0002 cm³/g < 0.0035 cm³/g) of micropores.

进行了一项研究，以研究基于多尺度孔隙结构的机制，控制聚合物增强土工合成粘土衬垫（GCL）的导水率，该衬垫是通过湿法混合法与铝土矿溶液（BLS 和 BLA）制备的。使用MIP和N₂ GA测试定量评估多尺度孔隙结构。渗透BLS的传统GCL比去离子水具有更大的流路体积（0.194 > 0.119 cm3/g），这归因于膨润土膨胀抑制和蒙脱石溶解，导致更高的导水率（3.0 × 10 ^-7 > 2.7 × 10^-11  m/s）。聚合物增强的 GCL 形成更多的微孔，并且由于聚合物形成更多的微孔而堵塞孔隙，因此具有更小的数量比例和流道体积，从而导致比传统 GCL 到 BLS 更低的导水率。 考虑到卷曲或收缩，聚合物增强 GCL 对 BLS（离子强度：622.5 mM）的水力传导率高于对 BLA（156.9 mM）的水力传导率（2.6 × 10^-9 > 6.0 × 10^-12聚合物构象留下了较小的微孔数量比例（5.54% < 6.71%）和体积（0.0002 cm³/g < 0.0035 cm³/g）。