Study of temperature effect on macro-synthetic fiber reinforced concretes by means of Barcelona tests- an approach focused on tunnels assessment.pdf (1.92 MB)
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Study of temperature effect on macro-synthetic fiber reinforced concretes by means of Barcelona tests: An approach focused on tunnels assessment

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posted on 20.03.2018 by Dimas A. Rambo, Ana Blanco-Alvarez, Antonio de Figueiredo, Edson R. dos Santos, Romildo D. Toledo Filho, Otavio Gomes
This paper presents an experimental investigation on the applicability of the Barcelona (BCN) test to evaluate the mechanical properties of a macro-synthetic fiber reinforced concrete (MSFRC) submitted to high temperature environments (up to 600 °C). BCN tests demonstrated that the MSFRC gradually loses tensile strength an energy consumption density with increasing temperature. Temperatures of 400 °C and 570 °C shown to be critical to the MSFRC mechanical performance. The residual mechanical behavior of the macro-synthetic fibers was not affected by the temperature up to 100 °C. For higher temperatures, the reinforcement showed that may lose part of its crystallinity compromising the MSFRC post-cracking performance. The constitutive model used to determine the stress-strain curves of the MSFRC was capable to reproduce the composite behavior after the event of a fire.

Funding

This work was supported by the Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [Grant No. #2015/25457-9 (Dimas Alan Strauss Rambo)].

History

School

  • Architecture, Building and Civil Engineering

Published in

Construction and Building Materials

Volume

158

Pages

443 - 453

Citation

RAMBO, D.A. ... et al, 2017. Study of temperature effect on macro-synthetic fiber reinforced concretes by means of Barcelona tests: An approach focused on tunnels assessment. Construction and Building Materials, 158, pp.443-453.

Publisher

© Elsevier

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

2017

Notes

This paper was accepted for publication in the journal Construction and Building Materials and the definitive published version is available at https://doi.org/10.1016/j.conbuildmat.2017.10.046

ISSN

0950-0618

Language

en

Exports