ZWEIKAMMERPATRONE ZUR VERFESTIGUNG VON GESTEIN ODER KOHLE

• Main Authors: ME?ER,F?, JANKOWSKI,ALFONS,DR, GLAESMANN,OTTO-ERNST, HAAKE,GERHARD
• Format: Patent
• Language: German
• Published: 03.04.1975
• Edition: 2
• Subjects: ADHESIVES; BLASTING; CHEMISTRY; COMPOSITIONS BASED THEREON; DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS ORMACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS,CLIPS, WEDGES, JOINTS OR JOINTING; DYES; EARTH DRILLING; EMBANKMENTS; ENGINEERING ELEMENTS AND UNITS; EXCAVATIONS; FIXED CONSTRUCTIONS; FOUNDATIONS; GALLERIES; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; HYDRAULIC ENGINEERING; LARGE UNDERGROUND CHAMBERS; LIGHTING; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; MECHANICAL ENGINEERING; METALLURGY; MINING; MINING OR QUARRYING; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; POLISHES; SHAFTS; SOIL SHIFTING; THEIR PREPARATION OR CHEMICAL WORKING-UP; THERMAL INSULATION IN GENERAL; TUNNELS; UNDERGROUND OR UNDERWATER STRUCTURES; WEAPONS

A two-compartment pierceable cartridge adapted for reinforcing or strengthening a stone or coal wall by insertion into a hole that had been bored into the wall, one compartment of which contains a polyisocyanate of diphenylmethane, and the other compartment of which contains a mixture of a polyetherglycol having a hydroxyl number between 200 and 400, between 10 and 20 percent by weight of a plasticizer, and between 0.3 and 5.0 percent by weight of water. When the cartridge is broken up and its contents are mixed, a foamed polyurethane resin is formed in situ which plugs the bored hole and thereby reinforces the wall.