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A New Method for Application of Pre-stressed FRP laminates for Strengthening of Concrete Structures

A New Method for Application of Pre-stressed FRP laminates for Strengthening of Concrete Structures
Author(s): ,
Presented at IABSE Congress: Challenges in Design and Construction of an Innovative and Sustainable Built Environment, Stockholm, Sweden, 21-23 September 2016, published in , pp. 1556-1563
DOI: 10.2749/stockholm.2016.1551
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Using bonded fiber reinforced polymer (FRP) laminates for strengthening and repair of structural members has been proven to be an effective and economic method. High strength and stiffness, light w...
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Bibliographic Details

Author(s): (Chalmers University of Technology, Gothenburg, Sweden)
(Chalmers University of Technology, Gothenburg, Sweden)
Medium: conference paper
Language(s): English
Conference: IABSE Congress: Challenges in Design and Construction of an Innovative and Sustainable Built Environment, Stockholm, Sweden, 21-23 September 2016
Published in:
Page(s): 1556-1563 Total no. of pages: 8
Page(s): 1556-1563
Total no. of pages: 8
Year: 2016
DOI: 10.2749/stockholm.2016.1551
Abstract:

Using bonded fiber reinforced polymer (FRP) laminates for strengthening and repair of structural members has been proven to be an effective and economic method. High strength and stiffness, light weight and good fatigue and durability properties of FRP composites together with advantages offered by adhesive bonding have made FRP bonding a suitable alternative for traditional strengthening and repair techniques. It has also been recognized that pre-stressing the FRP laminates prior to bonding would bring additional advantages such as reduced crack widths, postponing the yielding in tensile reinforcement, increasing the load bearing capacity and saving reinforcement material. Using pre-stressed laminates, however, is associated with very high interfacial stresses in the bond line at the laminate ends, which necessitates the use of mechanical anchors. This paper presents a new method and a device for applying pre-stressed FRP laminates to flexural structural members without the need for mechanical anchorage of the laminates.

Keywords:
concrete FRP bonding anchorage strengthening repair pre-stressing

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