Jafarifar, N., Pilakoutas, K., Angelakopoulos, H. et al. (1 more author) (2017) Post-cracking tensile behaviour of steel-fibre-reinforced roller-compacted-concrete for FE modelling and design purposes. Materiales de Construcción, 67 (326). p. 122. ISSN 0465-2746
Abstract
Fracture of steel-fibre-reinforced-concrete occurs mostly in the form of a smeared crack band undergoing progressive microcracking. For FE modelling and design purposes, this crack band could be characterised by a stress-strain (σ-ε) relationship. For industrially-produced steel fibres, existing methodologies such as RILEM TC 162-TDF (2003) propose empirical equations to predict a trilinear σ-ε relationship directly from bending test results. This paper evaluates the accuracy of these methodologies and their applicability for rollercompacted-concrete and concrete incorporating steel fibres recycled from post-consumer tyres. It is shown that the energy absorption capacity is generally overestimated by these methodologies, sometimes up to 60%, for both conventional and roller-compacted concrete. Tensile behaviour of fibre-reinforced-concrete is estimated in this paper by inverse analysis of bending test results, examining a variety of concrete mixes and steel fibres. A multilinear relationship is proposed which largely eliminates the overestimation problem and can lead to safer designs.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2017 CSIC. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY) Spain 3.0. |
Keywords: | Concrete; Composite; Fibre reinforcement; Metal reinforcement; Waste treatment |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Civil and Structural Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 11 Apr 2017 14:23 |
Last Modified: | 11 Apr 2017 14:23 |
Published Version: | http://doi.org/10.3989/mc.2017.06716 |
Status: | Published |
Publisher: | Consejo Superior de Investigaciones Científicas |
Refereed: | Yes |
Identification Number: | 10.3989/mc.2017.06716 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:114936 |