Development of Mechanized Wet Mix Shotcrete Application in Norwegian Tunnelling Industryby Knut Garshol, O. T. Blindheim AS, Tomter, Norway,
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: Materials processing | Shotcrete | Tunneling | Industries | Steel fibers | Fiber reinforced concrete | Hydraulics | Professional societies | Europe | Norway
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