Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/27000
Title: The mechanical behavior of composite-wrapped concrete cylindrs subjected to uniaxial compression load
Authors: Lau, KT 
Zhou, LM 
Keywords: Concrete
Concrete wrapping
Fibre-reinforced plastic
Finite element method
Issue Date: 2001
Publisher: Elsevier
Source: Composite structures, 2001, v. 52, no. 2, p. 189-198 How to cite?
Journal: Composite structures 
Abstract: Recent earthquake damages have repeatedly demonstrated the vulnerabilities of older reinforced concrete columns to seismic deterioration. The use of steel and fibre-reinforced plastic (FRP) materials wraps on aged and damaged concrete structures has been recognised as an effective method to restore the load carrying capacity and extend the service life of the structures. Steel, glass and carbon fibre composites have been increasingly used to reinforce the concrete column by putting the wraps around its circumference in order to maintain its structural integrity by constraining the lateral dilation of the column when it is subjected to axial compression load. This paper presents the behaviour of the wrapped concrete cylinder with different wrapping materials and bonding dimensions using finite element (FEM) and analytical methods. The experimental results show that the deflection of the wrapped concrete cylinder in the load direction decreases with increasing the length, thickness and modulus of the wrapping sheet. However, using a longer wrapping sheet with high modulus may not benefit the structure since it creates negative hoop stress in the wrapping sheet. An analytical equation is provided to estimate the shear stress distribution of an adhesive material for different wrapping geometries. The results of the equation compare well with FEM solutions.
URI: http://hdl.handle.net/10397/27000
ISSN: 0263-8223
EISSN: 1879-1085
DOI: 10.1016/S0263-8223(00)00167-7
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