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Development of Mechanized Wet Mix Shotcrete Application in Norwegian Tunnelling Industry

by Knut Garshol, O. T. Blindheim AS, Tomter, Norway,



Document Type: Proceeding Paper

Part of: Shotcrete for Underground Support V

Abstract:

From 1971 to 1980 wet mix shotcrete won the Norwegian market 100%. In the same period hand held spraying was replaced by hydraulic manipulators. From 1980 to 1986, steel fibre use increased from zero to admixture in 70% of the total volume. Cost reduction by 50%, output increased by 20 times and improved safety, quality and working environment was achieved.

Subject Headings: Shotcrete | Materials processing | Steel fibers | Hydraulics | Fibers | Fiber reinforced concrete | Tunnels | Norway | Europe

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