Journal of Composites for Construction · 2003 · 33 citations · 0 references
EngineeringCfrp AdhesionMechanical EngineeringCarbon FiberStructural EngineeringCarbon Fiber-reinforced PolymerEnvironmental EffectsContinuous-fibre CompositeMaterials ScienceFiber ReinforcementComposite TechnologyConcrete TechnologyReinforced ConcreteFiber-reinforced Cement CompositeShort-term BondSustainable CompositeCement-based Construction MaterialFiber-reinforced CompositeFiber-reinforced PolymersBond StrengthAdhesive MaterialPolymer ScienceCivil EngineeringStructural Adhesive
CFRP is increasingly used in structural applications, including waterfront concrete reinforcement, where it is bonded to concrete with adhesives whose strength can be affected by environmental exposure. The study evaluates the short‑term effects of temperature, moisture, and chloride content on CFRP adhesion using pull‑off tests. Three structural adhesives were tested across three temperatures and four relative humidities on concrete cubes, and the influence of superficial chloride on marine pile bond strength was also examined. High relative humidity was found to reduce bond strength below acceptable levels.
Carbon fiber reinforced polymers (CFRP) are being increasingly used in many structural applications due to their excellent mechanical and corrosion resistance characteristics. CFRP sheets and strips are being used to strengthen waterfront concrete structures, such as piers and wharves. The CFRP reinforcements are bonded to beams, piles, and decks using structural adhesives. Adhesive strength can be affected by both short-term and long-term environmental exposure. In the current study, short-term effects of temperature, moisture, and chloride content on the CFRP adhesion are evaluated using pull-off tests. Three structural adhesives were chosen to assess the effects of three different temperatures and four different relative humidities on the CFRP adhesion to concrete cubes. In the case of concrete piles exposed to marine conditions, the effect of superficial chloride content on the short-term bond strength was also investigated. It was shown that high relative humidity may reduce bond strength below acceptable levels.