Besides the concrete strength, the following study parameters were considered: (a) the concrete surface roughness in the bonded region, (b) the density of the steel fabric, (c) the ratio of the epoxy covered concrete surface width to the SRP strip width, and (d) the bonded interface length.
BACKSCAL is proportional to that width, or to the ratio of the background region width to the source-region width.
The half-threaded pin was beneficial for attaining bigger bonding width at the lap interface, which resulted from the higher material flow velocity.
Furthermore, it further shows that a bond width five times the thickness of the SU-8 epoxy layer is sufficient to attain 95% of the maximum apparent strain, which is obtained at the infinite width.
A complete lateral constraint at the infinite bond width could maximize the apparent thermal strain of the bonded polymer.
In this paper, an investigation into the effects of the matrix properties, bond length, bond thickness and bond width on the bond behaviour between a composite sandwich panel and polymer matrix is discussed.
The effects of epoxy type, fiber sheet type, FRP bond length, and FRP bond width on the bond behavior were investigated through the failure mode, bond stress versus slip curves, and scanning electron microscopy (SEM) imaging.
The main purpose of this work is to contribute to the definition of an effective bond width, which allows for the estimation of the load carrying capacity of the bond connection.
The influences of bond length, bond width, patch configuration, CFRP layer number, the modulus of the composite patch and adhesive shear modulus on the stress intensity factors and their fatigue lives were then evaluated using the boundary element method.
Parametric studies using the validated model were carried out to investigate the effects of varying the bond length, the thickness of FRP, the type of FRP, the concrete strength, and the bond width ratio.
