Journal of Composites for Construction · 2012 · 97 citations · 22 references
EngineeringCivil EngineeringMaterials ScienceMechanical Behavior Of MaterialsStructural EngineeringStructural MaterialsComposite MaterialsFracture MechanicsMasonry MaterialsMasonry StructuresMasonry UnitsStructural MechanicsCollapse Mechanism AnalysisFracture BehaviorFracture Mechanics Of MasonryMasonry Experimental TestingMasonry Interface BehaviorMasonry Shear StrengthMasonry WallsMaterial Fracture Behavior
FRP composites are used to reinforce masonry walls, enhancing shear capacity and out‑of‑plane strength, but their effectiveness is limited by debonding at the FRP‑masonry interface. This study experimentally investigates the debonding mechanism of FRP‑masonry connections. Experimental tests on brick and mortar specimens, combined with digital image correlation of surface displacements and a one‑dimensional cohesive‑fracture numerical model calibrated from strain‑derived interface parameters, were employed to analyze progressive debonding and predict interface fracture behavior.
Fiber-reinforced polymers (FRP) composites are used as supplementary reinforcement to increase the in-plane shear capacity or to provide out-of-plane load-carrying capability of masonry walls and to modify the collapse mechanism in arches and vaults. In these applications, the efficiency of load transfer is limited by the debonding of FRP from the masonry substrate. In this paper, the debonding mechanism of FRP-masonry is experimentally studied. Experimental procedures and test specimens are designed to investigate the progressive debonding of FRP from brick and mortar substrates and relate it to the response obtained from the FRP-masonry interface. Surface displacements during debonding are obtained using digital image correlation. A one-dimensional numerical model is developed for predicting the fracture behavior along the FRP-masonry interface using the cohesive fracture parameters from the brick and mortar interfaces obtained from the computed strains.
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Determination of displacements using an improved digital correlation method
MA Sutton, WJ Wolters, WH Peters et al. · Image and Vision Computing · 1983 · 1.8K citations
Bond–slip models for FRP sheets/plates bonded to concrete
Xinzheng Lu, J.G. Teng, L. P. Ye et al. · Engineering Structures · 2005 · 1.2K citations