CS TR63: Guidance for the design of steel-fibre-reinforced concrete

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Concrete Society Technical Report 63
Guidance for the design of steel-fibre-reinforced concrete

Author: The Concrete Society | Size: 10.9 MB | Format: PDF | Publisher: The Concrete Society | Year: 2007 | pages: 109 | ISBN: 1904482325

Although steel-fibre-reinforced concrete (SFRC) has been used in the UK and elsewhere for a number of years, there are no agreed design approaches for many of the current applications. This differs from conventional reinforced concrete using steel bars or welded fabric, which has been covered by national and international design codes for many years.
One example is the design of pile-supported floors, which are widely used for industrial buildings, warehouses and similar applications, for which various fibre manufacturers and specialist contractors have produced guidelines. RILEM (the International Union of Laboratories and Experts in Construction Materials, Systems and Structures) published a design method for steel fibres combined with reinforcement in 2003('). This used the draft Eurocode 2, ENV 1992-1-V2)a, s a framework but modified it to reflect the behaviour of fibrereinforced concrete observed in beam tests. In the Netherlands, CUR (the Centre for Civil Engineering Research and Codes) is preparing recommendations for SFRC industrial floors on piles(3)t;h is guidance will be restricted to applications beneath which there will be neither occupancy nor crawl spaces. This restriction is presumably aimed at limiting the risk to life from a failure. It should be noted that in some cases failures of such floors could still lead to a risk to life due to collapse of supported structures or fittings. The choice of design method should take into account this risk.
This Technical Report summarises the wide range of current applications for SFRC, including ground-supported and pile-supported slabs, sprayed concrete, composite slabs on steel decking and precast units. The Report also considers practical aspects such as production and quality control. Where possible it presents a detailed review of the design methodologies currently in use, with the aim of promoting an understanding of the technical issues involved. Normally, it is not possible to give definitive design guidelines but the information provided will allow the designers to exercise judgement in this area of evolving technology.
In general, the concrete in these applications has a fibre content of around 40kg/m3. Elevated suspended slabs with dosage in the region of 100kg/m3 have been built but elements with such dosages are outside the scope of this Report, as are ultra-high performance concreted4) which are highly specialised materials that may have a dosage of 150kg/m3 or more.

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[ir_71]

New working links:

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[scorpion07]

New links. Hope it will help.

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