10th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering (CICE), İstanbul, Turkey, 8 - 10 December 2021, vol.198, pp.2222-2232
Prestressed carbon fiber reinforced polymer (CFRP) system has been extensively studied and applied in strengthening industry. Various anchor systems have been developed to prevent premature failure of prestressed CFRP composites. Current prestress CFRP anchor system are classified as epoxy based and mechanical anchors. Most anchoring systems are designed for thin or narrow CFRP plates. The anchoring efficiency of large cross-section CFRP is very limited. It is imperative to develop an effective, easy installable anchor system for relative large cross-section CFRP plate. Under this background, a novel circular wedge anchoring system was developed and tested for popular 3 * 50 mm prestressed CFRP plate. This paper presents an experimental investigation of the proposed anchor system, mechanical performance and applicability are discussed and reported. Test result showed that material property, tooth pattern, and wedge angle have notable effect on failure modes and anchor capacity. The high capacity, small dimension, light weight and convenient installation characters of the proposed system contributes future promotion of prestressed CFRP strengthening technology.