Abstract
The effect of adding CaO to facilitate compaction in producing a mineral liner is presented. Adding CaO modified positively the density-moisture relation of the soil used typically in the liners, it however increased its hydraulic conductivity.
Mercury intrusion porosimetry and nitrogen adsorption are used to characterise the pore space in the treated soil and to estimate the gradual development of new minerals in the soil. The hydraulic conductivity seemed to be influenced by dissolution-precipitation processes rather than a grow of new minerals.