Verfahren zur Bodenbehandlung und Vorrichtung zur Durchfuehrung des Verfahrens

摘要

Also for rendering the soil strata impermeable. Consists of an elastic sleeve mounted on a cylindrical seating lying between two shoulders provided in a central zone of the exterior wall of a moulded plastic pipe section, threaded externally at one end and internally at the opposite socket end and having a series of apertures disposed in the wall below the elastic sleeve, so that cement or other similar composition can be injected under pressure causing the sleeve to be elastically deformed to permit the cement to pass outside the pipe section and enter the surrounding soil.