Development of high performance fiber reinforced cement composites (HPFRCC) for application as a transition layer of reinforced beams

  • Vladimir José Ferrari Assistant Professor, State University of Maringa, Department of Civil Engineering
  • Ana Paula Arquez Civil Engineering. Master in Structures EESC/USP.
  • João Bento Hanai EESC/USP
  • Rafael Alves Souza Full Professor, State University of Maringa, Department of Civil Engineering.

Abstract

This study presents the development and behavior analysis of high performance fiber reinforced cement composites (HPFRCC). The described materials were specifically developed for application as a transition layer: a repair layer that constitutes the stressed chord of reinforced concrete strengthened in flexure with carbon fiber reinforced polymers (CFRP). Nineteen different composites were produced by the hybridization process, varying the conventional short steel fiber and steel microfiber (manufactured exclusively for this research) contents to modify the microstructure of the material, thus enhancing the stress transfer process from the cement matrix to the fibers. To analyze the response to flexural loading, the composites underwent three point bending tests in notched prism specimens. The response of the material was obtained considering strength and tenacity parameters (flexural and fracture). There was evidence of high performance by the composites with a pseudo-hardening behavior.

Author Biographies

Vladimir José Ferrari, Assistant Professor, State University of Maringa, Department of Civil Engineering
Departamento de engenharia civil
João Bento Hanai, EESC/USP
Full Professor, University of Sao Paulo, School of Engineering of São Carlos
Published
2014-12-01
Section
Artigos