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Luong test to evaluate residual shear behavior of FRC

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conference contribution
posted on 2018-03-26, 09:46 authored by C. Aire, Ana Blanco-AlvarezAna Blanco-Alvarez, Sergio Pialarissi-CavalaroSergio Pialarissi-Cavalaro, Pablo Pujadas
The behavior of concrete subjected to shear is a complex phenomenon; difficult to be evaluated experimentally. The characterization of the behavior of fiber reinforced concrete (FRC) under shear is even more complex since high displacements are required to assess the post-cracking residual shear response. Such high displacements might produce a change in the test setup, thus inducing bending moments that compromise the reliability of the results. The Luong test - originally proposed to assess shear in plain concrete and rocks - might be a suitable testing method for this purpose. However, no application of this test to FRC is found in the literature. The objective of this study is to propose a simple shear test and adapt it for FRC. For that, an experimental program of Luong test was performed on FRC mixes including steel and macro-synthetic fibers in different contents. Moreover, two variables related to the test setup were analyzed: the height of the specimen and the diameter of the circumferential notch. The results indicate that the Luong test meets the requirements to be applied to the characterization of the shear residual response of FRC in terms of sensitivity of the test and reliability.

Funding

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.

History

School

  • Architecture, Building and Civil Engineering

Published in

BEFIB - 9th RILEM International Symposium on Fiber Reinforced Concrete FRC: The Modern Landscape. BEFIB 2016. Proceedings of the 9th RILEM International Symposium on Fibre Reinforced Concrete

Pages

1309 - 1318

Citation

AIRE, C. ...et al., 2016. Luong test to evaluate residual shear behavior of FRC. IN: Banthia, N., di Prisco, M and Soleimani-Dashtaki, S. (eds.) 9th RILEM International Symposium on Fiber Reinforced Concrete (BEFIB 2016), Vancouver, Canada, Sept 19-21th, pp. 1309 - 1318.

Publisher

RILEM Publications S.A.R.L.

Version

  • AM (Accepted Manuscript)

Publisher statement

This 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/

Publication date

2016

Notes

This is a conference paper.

Publisher version

Language

  • en

Location

Vancouver, Canada