Luong test for the characterization of the shear post-cracking response of fiber reinforced concrete
journal contributionposted on 2018-03-20, 15:15 authored by Ana Blanco-AlvarezAna Blanco-Alvarez, C. Aire, Pablo Pujadas, Sergio Pialarissi-CavalaroSergio Pialarissi-Cavalaro
The behavior of concrete subjected to shear can be significantly improved by the addition of fibers, which may partially or totally substitute the traditional steel stirrups (also known as links). Design recommendations include formulations to account for the contribution of the fibers. However, these formulations take the results of small-scale bending tests as input parameters. The main reason for that is the lack of standardized tests and the difficulty to assess direct shear in fiber reinforced concrete (FRC) both for the design and for the quality control. The present study proposes a test for the characterization of the post-cracking shear response of FRC. The test is validated through an experimental program with conventional concret e and FRC. The influence of different parameters (geometry of the specimen, the type and the content of fiber) is assessed and a comparison is made between the push-off test and the one proposed here. Results of an in-depth statistical analysis indicate that the latter is a simpler and valid alternative to evaluate the post-cracking shear response of FRC.
The experimental program was conducted in the Laboratory of Structures and Materials of the Institute of Engineering of the UNAM in Mexico. The authors acknowledge the Institute of Engineering of the UNAM and the International Partnership Fund of the Institute of Engineering of the UNAM for the support in the Partnership Projects of 2014. Likewise, the authors would like to thank the companies Euclid (in particular to Alma Reyes and Victor Sanchez), BASF (Jorge Esqueda) and Bekaert (Carlos Frutos) for their support in the performance of the experimental program. Finally, the third author acknowledges the support of the scholarship PDJ granted by Departament d’Universitats, Recerca i Societat de la Informacio de la Generalitat de Catalunya.
- Architecture, Building and Civil Engineering
Published inConstruction and Building Materials
Pages207 - 217
CitationBLANCO, A. ... et al, 2017. Luong test for the characterization of the shear post-cracking response of fiber reinforced concrete. Construction and Building Materials, 149, pp.207-217.
- AM (Accepted Manuscript)
Publisher statementThis work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/
NotesThis paper was published in the journal Construction and Building Materials and the definitive published version is available at https://doi.org/10.1016/j.conbuildmat.2017.05.135.