  In the framework of research into radioactive waste disposal, this paper
presents some tests carried out to investigate the effects of temperature on
the changes in permeability of Boom between 20 and 90 deg C. Constant head
permeability tests were carried out in a high pressure isotropic compression
tests at various temperature and isotropic stresses. The results show that the
changes in permeability of Boom clay with temperature are only due to the
changes in viscosity of free water with temperaure. This demonstrates on the
one hand that the water involved in transfer at various temperatures is free
water and on the other hand that there is apparently only few changes in the
status of adsorbed water with respect to temperature between 20 and 90 deg C.
