PROCESS FOR REINFORCING GEOLOGICAL FORMATIONS

1527338 Stabilising earth formations BAYER AG 23 May 1977 [25 May 1976] 21560/77 Heading E1F A process for reinforcing and/or stabilising an earth formation comprises introducing into the formation a polyurethane forming mixture including a polyol component and a polyisocyanate component, the polyis...

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Bibliographische Detailangaben
Hauptverfasser:	KUBENS,ROLF,DE, GEBAUER,HERBERT,DE
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES CHEMISTRY COMPOSITIONS BASED THEREON DYES EARTH DRILLING EMBANKMENTS EXCAVATIONS FIXED CONSTRUCTIONS FOUNDATIONS GALLERIES HYDRAULIC ENGINEERING LARGE UNDERGROUND CHAMBERS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MINING MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS POLISHES SHAFTS SOIL SHIFTING THEIR PREPARATION OR CHEMICAL WORKING-UP TUNNELS UNDERGROUND OR UNDERWATER STRUCTURES
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Zusammenfassung:	1527338 Stabilising earth formations BAYER AG 23 May 1977 [25 May 1976] 21560/77 Heading E1F A process for reinforcing and/or stabilising an earth formation comprises introducing into the formation a polyurethane forming mixture including a polyol component and a polyisocyanate component, the polyisocyanate component comprising 10-80% by weight of 2, 4'-diisocyanato-diphenylmethane. The polyisocyanate and polyol components may be delivered from separate containers by pumps or gas pressure and mixed in a continuous flow mixer either prior to or after introduction into the formation, or the two components are contained separately in a two chamber cartridge which is introduced into a cavity in the formation and ruptured.