High performance cementitious compounds and their application as transition substrate for beams
Abstract
This study presents the development and analysis of the behavior of high performance cementitious compounds reinforced with fibers. The material described was specifically developed for its application as a transition substrate, meaning, a repair layer that forms the tensed span of the flexion reinforced concrete beams with carbon fiber reinforced polymers (CFRP). Nineteen different compounds were produced by the hybridization process. The volume of the short fibers and of the steel microfibers varied. To analyze the behavior of the flexural material, tests were done in three points in tests tubes with their notches. The response of the material was analyzed considering the tenacity parameters (to flexion and fracture). The high performance of the compounds through the behavior of pseudo-hardening was confirmed.
Keywords: cementitious compounds; concrete beams; transition substrate.
Downloads
References
Ferreira, L. E. T., Bittencourt, T. N., Souza, J. L. A. O., Gettu, R. (2012), “R-Curve behavior in notched beam tests of rocks”, Engineering Fracture Mechanics, N. 32, pp 27-40.
Ferrari, V. J., Hanai, J. B. (2012), “Flexural strengthening of reinforced concrete beams with carbon fibers reinforced polymer (CFRP) sheet bonded to a transition layer of high performance cement-based composite”, Ibracon Structures and Materials Journal, Vol. 5, N. 5, pp 596-626.
Arquez, A. P. (2010), Dissertação mestrado, “Aplicação de laminado de polímero reforçado com fibras de carbono (PRFC) inserido em substrato de microconcreto com fibras de aço para reforço à flexão de vigas de concreto armado”, Escola de Engenharia de São Carlos, Universidade de São Paulo.
Rilem TC 162-TDF (2002). Test and design methods for steel fibre reinforced concrete. Bending test, Materials and Structures, Vol. 35, pp 579-582.
_______________________________
License in effect from September 2020
You are free to:
- Share — copy and redistribute the material in any medium or format for any purpose, even commercially.
- Adapt — remix, transform, and build upon the material for any purpose, even commercially.
- The licensor cannot revoke these freedoms as long as you follow the license terms.
Under the following terms:
- Attribution — You must give appropriate credit , provide a link to the license, and indicate if changes were made . You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.
Notices:
You do not have to comply with the license for elements of the material in the public domain or where your use is permitted by an applicable exception or limitation .
No warranties are given. The license may not give you all of the permissions necessary for your intended use. For example, other rights such as publicity, privacy, or moral rights may limit how you use the material.
.png)
