Method for impregnating concrete or mortar walls, and composition therefor.

摘要

The process is characterised in that the surface to be waterproofed of a rigid structure made of concrete or mortar (2) is impregnated with a composition composed of or containing an aqueous dispersion modified with polymers and containing amorphous silicon dioxide and at least one polymer. The impregnated surface may be covered with a skim (11) coat. <IMAGE>