The self-healing of a GCL with a circular hole is examined in experiments where the GCL, overlain by geomembrane, is hydrated from a silica sand subgrade (SSS) having three different pore water chemistries. Factors considered included: hole size, subgrade initial moisture content w_fdn, GCL mass per unit area, and overburden stress (20–100 kPa). GCL self-healing is better for w_fdn = 16% than for w_fdn = 10%, which is better than for 5%, when the SSS pore water has negligible cations (ionic strength, I < 0.1 mM). However, only the 14.3 mm-diameter hole fully self-healed and only when w_fdn = 16%. In contrast, when the GCL is hydrated from SSS with pore water having an ionic strength, I, of 20 and 30 mM, the self-healing for w_fdn = 5% is better than for w_fdn = 10%, which is better than for w_fdn = 16%, although none of the holes self-healed. When a ~0.5 m hydraulic head was applied above the GCL under σ_v = 20–100 kPa, a 38.1 mm-diameter hole self-healed with water having I < 0.1 mM, a 25.4 mm-diameter hole self-healed with pore water with I = 20 mM and 30 mM, but none self-healed with simulated synthetic landfill leachate (SSL). Post-hydration hydraulic conductivity (k) tests with SSL suggest that a hole up to 14.3 mm-diameter would not pose a significant adverse impact on the k compared to an intact GCL; however, this is not the case for the larger holes tested.

在实验中检查了带有圆孔的 GCL 的自修复能力，其中 GCL 被土工膜覆盖，从具有三种不同孔隙水化学性质的硅砂路基 (SSS) 中水合。考虑的因素包括：孔尺寸、路基初始含水量w _fdn、每单位面积的 GCL 质量和覆土应力 (20-100 kPa)。 当 SSS 孔隙水具有可忽略的阳离子（离子强度，I  < 0.1 mM）时，GCL 自愈对于w _fdn  = 16% 比w _fdn = 10% 更好，后者优于 5% 。然而，只有 14.3 毫米直径的孔完全_自愈并且只有当w _fdn = 16%。相比之下，当 GCL 从 SSS 中与离子强度I为 20 和 30 mM 的_{孔隙水水合时}，w _fdn  = 5%的自愈性优于w _fdn  = 10%，后者优于对于w _fdn  = 16%，虽然没有一个漏洞可以自我_修复。当在σ _v  = 20–100 kPa下在 GCL 上方施加 ~0.5 m 水头时，直径为 38.1 mm 的孔会被I  < 0.1 mM 的水自愈，直径 25.4 mm 的孔会被孔隙水自修复与我 = 20毫米和30毫米，但与模拟合成渗滤液（SSL）无自我愈合。水化后水力传导率 ( k) 使用 SSL 进行的测试表明，与完整的 GCL 相比，直径达 14.3 毫米的孔不会对k造成显着的不利影响；然而，对于测试的较大孔，情况并非如此。