Thermal Conductivity of Compacted GO-GMZ Bentonite Used as Buffer Material for a High-Level Radioactive Waste Repository

Table 1

Basic properties of GMZ01 bentonite.

Chemical component	SiO2, Al2O3, and H2O
Specific gravity (mg/m^3)	2.66
Alkaline coefficient	1.14
pH value	8.68–9.86
Liquid limit (%)	276
Plastic limit (%)	37
Plastic index	239
Total specific surface area (m^2/g)	570
Cation exchange capacity (cmol/kg)	77.30
Main exchange cations (cmol/kg)	Na^+ (43.36); 1/2 Ca^2+ (14.57); 1/2 Mg^2+ (6.17); K^+ (2.51)