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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Fibre reinforced spray concrete for compliance with site safety requirement
Author(s): B. de Rivaz
Appears on pages(s): 48-58
Keywords: Steel fibre, performance, spray-concrete, testing method
Abstract:Multiple research studies and tests on the behaviour of steel fibre reinforced concrete have been carried out in recent years in various countries. They have greatly contri-buted to a better characterisation of Steel Fibre Reinforced Concrete (SFRC), and have thus allowed to gain a better understanding of the behaviour of this material and to specify minimum performance requirements for each project. The European standard EN 14487-1 mentions the different ways of specifying the ductility of fibre reinforced sprayed concrete in terms of residual strength and energy absorption capacity. It also mentions that both ways are not exactly comparable. The energy absorption value measured on a panel can be prescribed when –in case of rockbolting–emphasis is put on energy which has to be absorbed during the deformation of the rock. (Especially useful for primary sprayed concrete linings). The residual strength can be prescribed when the concrete characteristics are used in a structural design model. Indeed relevant material properties are especially useful when we used sprayed concrete in temporary support or final lining to meet the safety requirement. For different project a complete test program were launched in order to validate the use of steel fibre reinforced spray concrete and determined clear perform-ance according to project requirement. The paper will describe and explain the test procedure and present the results obtained by this test program.
Mexican Institute of cement and concrete, International Partner Access.
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