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research article

Structural behavior of multifunctional GFRP joints for concrete structures

Riebel, F  
•
Keller, T  
2009
Construction and Building Materials

A multifunctional all-FRP joint has been developed for the transfer of bending moments and shear forces in thermal insulation sections of concrete slab structures used in building construction. Tensile forces from moments are transferred by horizontal GFRP bars, while a pultruded cellular GFRP element transfers the compression forces. The shear forces are transferred by inclined GFRP bars and the webs of the GFRP element. The new joint considerably increases energy savings for buildings due to the low thermal conductivity of GFRP materials. The quasi-static behavior of the joint at the fixed support of cantilever beams was investigated. Two parameters were studied: shear- or moment-dominated loading mode and concrete strength. Results show that the all-FRP joint does not play a critical role at the ultimate limit state. Ductile failure occurs through concrete crushing. The GFRP bars lead to a significant improvement in joint performance compared with similar joints comprising steel bars. Higher concrete strength does not, however, significantly improve the ultimate load. [All rights reserved Elsevier]

  • Details
  • Metrics
Type
research article
DOI
10.1016/j.conbuildmat.2008.05.013
Web of Science ID

WOS:000264000000014

Author(s)
Riebel, F  
•
Keller, T  
Date Issued

2009

Published in
Construction and Building Materials
Volume

23

Issue

4

Start page

1620

End page

1627

Subjects

Bars

•

Beams (structures)

•

Bending

•

Cantilevers

•

Compressive strength

•

Concrete

•

Construction industry

•

Crushing

•

Ductility

•

Glass fibre reinforced plastics

•

Joining processes

•

Shear strength

•

Slabs

•

Structural engineering

•

Tensile strength

•

Thermal conductivity

•

Thermal insulation

Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
CCLAB  
Available on Infoscience
June 22, 2009
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/40747
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