Self-repair of cracks and defects in clay: a review of evidence, mechanisms, theories and nomenclature

Study on the Effect of Desiccation Cracks on the Hydraulic Conductivity of Geosynthetic Clay Liner

“…GCLs work like single liners (similar to potable ponds) and a composite liner (as in some covers) [5,6]. The bentonite provides the principal obstacle to fluid movement through a GCL [7,8]. When properly hydrated, bentonite (usually sodium bentonite) has a low permeability to liquids and gases, which is especially important for gases.…”