Guidance for the Design of Steel-Fibre-Reinforced Concrete
Summarises the range of current applications for SFRC, including ground-supported and pile-supported slabs, sprayed concrete, composite slabs on steel decking and precast units. Considers practical aspects such as production and quality control. Reviews some design methodologies currently in use to promote an understanding of the technical issues involved.
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 Labora- tories and Experts in Construction Materials, Systems and Structures) published a design method for steel fibres combined with reinforcement in 2003('). This used the draft Euro-
code 2, ENV 1992-1-V2), as a framework but modified it to reflect the behaviour of fibre- reinforced 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); this 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 methodolo-
gies 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. Ele- vated 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.
Download
http://s18.alxa.net/s18/srvs2/02/001...d.Concrete.rar
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 Labora- tories and Experts in Construction Materials, Systems and Structures) published a design method for steel fibres combined with reinforcement in 2003('). This used the draft Euro-
code 2, ENV 1992-1-V2), as a framework but modified it to reflect the behaviour of fibre- reinforced 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); this 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 methodolo-
gies 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. Ele- vated 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.
Download
http://s18.alxa.net/s18/srvs2/02/001...d.Concrete.rar