Different parts of strengthened structures with FRP systems with the forms of outer coverage are: beams, columns, walls, joints, chimneys, circular arches, tunnels, bins, pipes, and trusses.
In spite of that, research on the viscoelastic behaviour of these adhesives and its influence on the mechanical behaviour of strengthened concrete structures is scarce, particularly at the early ages of curing.
The presence of high interfacial stresses that develop near the end of composite known as edge effect may compromise the résistance to failure of strengthened structure.
The performance of the interface between FRP and concrete is one of the key factors affecting the behaviour of the strengthened structure.
The structural behaviour of strengthened beams with treated composite plates was found to be comparable with those of untreated.
Parametric studies were conducted to study the effects on the load carrying capacity and structural behaviour of strengthened composite girders owing to the change in the composite laminate elastic modulus, number of laminate layers, concrete strengths and structural steel strengths.
To bridge quantitative and qualitative analyses of the bending behaviour of strengthened beams, we propose here the use of a 3D finite element model and experimental data.
Several parameters pertaining to the in-plane shear behaviour of strengthened URM walls were investigated, including failure modes, shear strength, maximum drift, pseudo-ductility, and shear modulus.
A two-dimensional finite element model was used to simulate the behaviour of strengthened wallettes tested in diagonal tension in a recent experimental programme.
