A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Reinforced Concrete Beams and Slabs with Bonded CFRP Laminates: Strain Compatibility Paradox
Externally bonded Fibre Reinforced Polymers (FRP) Laminates have been extensively used to strengthen reinforced concrete beams and slabs in flexure. Most design codes of practice provisions assume full strain compatibility between the FRP laminates and the concrete section in order to estimate the moment re-sistance of this hybrid system. However, as shown here, strain compatibility is lost during the early stages of loading. The current design methodologies account for premature failure due to interfacial crack debonding mechanisms by limiting the strains in the FRP to low values, resulting in the use of only a small portion of the FRP laminate capacity. Experimental investigations previously performed on precast bridge girders, hollow core slabs, and beam specimens – all with CFRP laminates bonded to their soffits – highlight the loss of strain compatibility and interfacial debonding. In this paper, recommendations are presented in order to tackle both issues.
Reinforced Concrete Beams and Slabs with Bonded CFRP Laminates: Strain Compatibility Paradox
Externally bonded Fibre Reinforced Polymers (FRP) Laminates have been extensively used to strengthen reinforced concrete beams and slabs in flexure. Most design codes of practice provisions assume full strain compatibility between the FRP laminates and the concrete section in order to estimate the moment re-sistance of this hybrid system. However, as shown here, strain compatibility is lost during the early stages of loading. The current design methodologies account for premature failure due to interfacial crack debonding mechanisms by limiting the strains in the FRP to low values, resulting in the use of only a small portion of the FRP laminate capacity. Experimental investigations previously performed on precast bridge girders, hollow core slabs, and beam specimens – all with CFRP laminates bonded to their soffits – highlight the loss of strain compatibility and interfacial debonding. In this paper, recommendations are presented in order to tackle both issues.
Reinforced Concrete Beams and Slabs with Bonded CFRP Laminates: Strain Compatibility Paradox
E.Y. Sayed-Ahmed (author) / A. A. Abdelrahman (author) / N. G. Shrive (author)
2017
Article (Journal)
Electronic Resource
Unknown
Metadata by DOAJ is licensed under CC BY-SA 1.0
Concrete Beams and Slabs Retrofitted with CFRP Laminates
| British Library Conference Proceedings | 1996
Flexural strengthening of reinforced concrete beams with externally bonded CFRP laminates
| British Library Conference Proceedings | 2001
Reinforced concrete rectangular beams strengthened with CFRP laminates
| British Library Online Contents | 1996
Fire protection systems for reinforced concrete slabs strengthened with CFRP laminates
| Online Contents | 2013