Gas Network Development in Compact Bentonite: Key Controls on the Stability of Flow Pathways

Table 1

Pre- and posttest geotechnical properties for test sample Mx80-A. Values are based on a grain density of 2770 Mg/m³ [29]. Swelling pressure and intrinsic permeability are estimated from the saturated void ratio using published trends by Börgesson et al. [36].

	Length (mm)	Diameter (mm)	Moisture content (%)	Porosity (%)	Dry density (kg/m^3)	Bulk density (kg/m^3)	Saturation (%)	Swelling pressure (MPa)	Intrinsic permeability (m^2)
Pretest	121.4	59.8	26.6	43.7	1560	1975	95	8.6	5.5 × 10^−21
Posttest	121.7	60.1	28.2	44.2	1545	1981	99	6.5	5.5 × 10^−21