Process for production of cut-off walls

US5584601A · kind A · utility

Assignee

• SUD-Chemi AG · DE

Inventors

• Reinhard Hahn · Vilsheim, DE
• Norbert Schall · Langenpreising, DE

Key dates

• Filing date: May 25, 1995
• Grant date: Dec 17, 1996
• Expiry date: May 25, 2015

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2111/00293
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A process for production of cut-off walls, characterized by the fact that a geotextile-smectite mat that contains a water-swellable smectite is introduced to a not yet hydraulically set cut-off wall composition. A further object of the invention is a geotextile-smectite mat in web form, characterized by the fact that it contains a sealing layer of water-swellable smectite between two geotextile layers and has a locking mechanism on each side edge for tight joining of the web to another web that has a complementary locking mechanism on each side edge.