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List of products by author: B. de Rivaz
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Design of Only Fibers Reinforced Concrete Segments
Abstract: The Fibre-Reinforced Concrete (FRC) is a composite material made of basic concrete in which a homogeneously distributed fibre reinforcement is incorporated and homogeneously distributed. Fibre’s addition in concrete controls plastic and hydraulic shrinkage cracking, considerably improves the concrete post-cracking behaviour. Steel fibres have been used in precast segment tunnel linings (which...
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Feasibility analysis for the use of fiber reinforced concrete precast segment in Nenskra hydraulic tunnels
Abstract: The construction of two hydraulic tunnels with a total length of 30 km is forecast in the Nenskra (Georgia) project. These tunnels will be mechanical excavated with a precast segmental lining. The possibility of using fiber reinforced concrete segment without any traditional reinforcement has been considered. In order to obtain suitable performance of the lining, a process was defined in order...
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FRC precast segment characteristic residual flexural strength dertermination
Abstract: A number of large tunnels have already been built around the world with Fibre Reinforced Concrete (FRC) precast segment linings.In accordance with fib bulletin 83, Model Code 2010, the structural design of FRC elements is based on the post-crack residual tensile strength provided by the steel fibers. Nominal values of the material properties can be determined by performing a flexural bending test.
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Full-scale tests on precast tunnel segments in fiber reinforced concrete
Abstract: The use of Fiber Reinforced Concrete in precast tunnel segments is continuously increasing. The possibility of totally substituting the ordinary steel cage with a fiber reinforcement allows several advantages related to higher quality and reduced costs. Several researches were developed on the field [1-5], showing the feasibility of this solution. A particular attention was paid on enhancing...
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Full-Scale Tests on Precast Tunnel Segments with Newly High Performance Steel Fibre
Abstract: The use of Fibre Reinforced Concrete in precast tunnel segments is continuously increasing. The possibility of totally substituting the ordinary steel cage with a fibre reinforcement allows several advantages related to higher quality, cracking control, sustainability and reduced costs. A new guideline concerning the use of FRC precast segment has been recently published to provide detail state...
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Innovative FRC Design for Underground Applications (inner lining, shaft, CIP) using a New Generation of Fibres
Abstract: The behaviour of fibre reinforced concrete is more than a simple superposition of the characteristics of the concrete matrix and the fibres; to analyze the behaviour of this composite material, also the interaction between both has to be taken into account, i.e. the transfer of loads from the concrete matrix to the fibre system. A unique concept of fibres have been developed which combined high...
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