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Guidelines for Shotcreting and Current Development in the Wet-Mix Technique in Finland

by J. P?ll?, Technical Research Cent of Finland, Espoo, Finland,



Document Type: Proceeding Paper

Part of: Shotcrete for Underground Support V

Abstract:

Guidelines for shotcreting were written based on the literature survey and shotcreting trials. During shotcreting trials existing Norwegian and Middle-European wet-mix shotcreting concepts were modified. The dosage of accelerator is 1 - 2%, strength properties are satisfactory and watertightness is good. Nowadays the wet-mix shotcrete and steel fibres are approved method is rock engineering. The length of fibres is typically 25 mm and dosage is 60 kg/m³.

Subject Headings: Steel fibers | Rocks | Materials processing | Shotcrete | Fibers | Concrete admixtures | Bibliographies | Finland | Europe

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