In this paper, the effectiveness of FRCM composites for the confinement of concrete specimens is studied. Concrete cylinders were confined using either carbon- or glass-FRCM jackets, and then tested monotonically under axial load. Performance of the system was evaluated in terms of gain in axial strength and ductility with respect to unconfined specimens. In addition, values of hoop strains recorded with strain gauges mounted on the fibers were compared to those obtained on the composite surface using a digital image correlation (DIC) system. Results show that carbon-FRCM jackets provide higher gain in axial strength than their glass-FRCM counterparts and have a higher fiber exploitation ratio. Measurement of hoop strains on composite surface were significantly higher than those recorded directly on the fibers using strain gauges, for both the FRCM-confinig systems.

Hoop fiber and surface matrix strain development on concrete members confined with FRCM composites

Andreose, Filippo;Jaime Gonzalez-Libreros;Flora Faleschini;Klajdi Toska;Mariano Angelo Zanini;Carlo Pellegrino
2019

Abstract

In this paper, the effectiveness of FRCM composites for the confinement of concrete specimens is studied. Concrete cylinders were confined using either carbon- or glass-FRCM jackets, and then tested monotonically under axial load. Performance of the system was evaluated in terms of gain in axial strength and ductility with respect to unconfined specimens. In addition, values of hoop strains recorded with strain gauges mounted on the fibers were compared to those obtained on the composite surface using a digital image correlation (DIC) system. Results show that carbon-FRCM jackets provide higher gain in axial strength than their glass-FRCM counterparts and have a higher fiber exploitation ratio. Measurement of hoop strains on composite surface were significantly higher than those recorded directly on the fibers using strain gauges, for both the FRCM-confinig systems.
2019
Proceedings of the 1st fib Italy YMG Symposium on Concrete and Concrete Structures
9782940643035
File in questo prodotto:
File Dimensione Formato  
Andreoseetal2019_paper.pdf

accesso aperto

Tipologia: Postprint (accepted version)
Licenza: Accesso libero
Dimensione 2.52 MB
Formato Adobe PDF
2.52 MB Adobe PDF Visualizza/Apri
Pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11577/3322020
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 0
  • ???jsp.display-item.citation.isi??? ND
social impact