Patents Assigned to Soltanche
  • Method of rendering soils impervious and products for carrying out the method
    Patent number: 5017233
    Abstract: The invention relates to a method of rendering a soil or another material like a mortar, a binder, or a concrete impervious by injecting it with a silica solution. A finely ground powdered compound containing calcium with a solubility in water of between approximately 0.01 g/l and approximately 2 g/l is mixed into the silica solution, which has a ratio of SiO.sub.2 to Na.sub.2 O of between 1 and 1.3, before injection.
    Type: Grant
    Filed: April 12, 1990
    Date of Patent: May 21, 1991
    Assignee: Soltanche
    Inventor: Daniel Gouvenot