Durability of CFRP–concrete joints under freeze–thaw cycling

Effects of Ageing on the Bond Properties of Carbon Fiber Reinforced Polymer/Concrete Adhesive Joints: Investigation Using a Modified Double Shear Test

“…Since some detrimental effects of moisture on the mechanical properties of FRP/concrete assemblies have been reported, especially with the use of cold-curing epoxy adhesives [11,13,14], and since the rate of moisture diffusion increases with temperature, hygrothermal ageing conditions are considered in the present study. Moreover, as underlined by Yun and Wu [15], the durability of FRP/concrete joints under freezethaw cycling has received insufficient attention, and contradictory results were reported by different authors. On the one hand, a decrease in residual strength as a function of the number of cycles was observed by many authors [16][17][18], which is consistent with the fact that constituents of the joint (FRP, adhesive and concrete) exhibit different thermal expansion behaviors.…”

Pull-out Strengths of GFRP-Concrete Bond Exposed to Applied Environmental Conditions

“…This type of failure mode observed requires quantification of bond strength due to exposure conditions by means of appropriate test set-up. Research conducted by Homam et al (2001), Dai et al (2010), Benzarti et al (2011), Yun andWu (2011) and Imani et al (2010) focused on the performance of FRPconcrete bond system under freeze-thaw cycles, temperature cycles, alkali solutions, moisture ingression, hydrothermal ageing with the help of various test set-ups such as pull-off, bend tests, single-lap-joint shear tests, etc. Peel and shear fracture tests were used by Tuakta and Büyüköztürk (2011) to study the effect of moisture on FRP-concrete bond system by tri-layer fracture mechanics.…”

Effect of Fiber Hybridization on Durability Related Properties of Ultra-High Performance Concrete

“…Therefore, knowledge about the wettability, absorptivity, frost resistance and salt resistance of a given UHPC formulation is extremely important when considering its durability. The frost resistance of fiber reinforced concrete is affected by its porosity, type of aggregate, fiber characteristics and environmental conditions; hence, the frost resistance of ultra-high performance concrete mixtures has been investigated by some researchers (Yun and Wu 2011). Chemrouk and Hamrat have shown that a water/cement ratio below 0.4 reduces the penetration of chlorides, decreases the risks of concrete spalling and rebar corrosion in reinforced concrete structures (Chemrouk and Hamrat 2002).…”