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Design issues for concrete reinforced with steel fibers, including fibers recovered from used tires

Neocleous, K., Tlemat, H. and Pilakoutas, K. (2006) Design issues for concrete reinforced with steel fibers, including fibers recovered from used tires. Journal of Materials in Civil Engineering, 18 (5). pp. 677-685. ISSN 0899-1561

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Abstract

The writers are investigating the use of steel fibers, recovered from used tires (RSF), as concrete reinforcement, aiming at the development of design recommendations. This paper presents part of this research and examines initially an existing design guideline, developed by RILEM for steel fiber-reinforced concrete (SFRC), in order to assess the suitability of the guideline for the flexural design of concrete reinforced with RSF (RSFRC). This examination indicates that, although the RILEM guideline is in general suitable for the flexural design of RSFRC, there are some fundamental issues related to the evaluation of the tensile stress-strain behavior of SFRC that affect the accuracy of the guideline. Thus, based on this conclusion, a new approach is outlined for the evaluation of the tensile stress - strain behavior of SFRC and models are derived for different types of RSF and industrially produced fibers. These models are applied to the flexural design of concrete reinforced with RSF (RSFRC) and results are compared with those obtained by using the RILEM tensile stress-strain models. It is concluded that the model proposed in this study is more conservative and accurate than the RILEM models. Recommendations are also made on values of tensile strain to be used as the ultimate limit state, when predicting the resistance capacity of SFRC and RSFRC. © 2006 ASCE.

Item Type: Article
Copyright, Publisher and Additional Information: © 2006 ASCE. This is an author produced version of a paper subsequently published in Journal of Materials in Civil Engineering. Uploaded in accordance with the publisher's self-archiving policy.
Keywords: Bending strength; Fiber reinforced materials; Fibers; Recycling; Strain; Structural design; Tensile stress; Tires; Waste management, Flexural design; Resistance capacity; Steel fiber-reinforced concrete (SFRC); Tensile strain, Reinforced concrete, concrete; construction material; design; steel
Academic Units: The University of Sheffield > University of Sheffield Research Centres and Institutes > Centre for Cement and Concrete (Sheffield)
The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Civil and Structural Engineering (Sheffield)
Depositing User: Prof Kypros Pilakoutas
Date Deposited: 31 Jan 2011 16:44
Last Modified: 08 Feb 2013 17:30
Published Version: http://dx.doi.org/10.1061/(ASCE)0899-1561(2006)18:...
Status: Published
Publisher: American Society of Civil Engineers
Refereed: Yes
URI: http://eprints.whiterose.ac.uk/id/eprint/42806

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