Thermal Incompatibility Between CFRP Tendons and Concrete
نویسندگان
چکیده
Results are presented from a comprehensive experimental study to assess the occurrence of heat-induced longitudinal splitting cracks in concrete specimens reinforced with carbon fiber–reinforced polymer (CFRP) or steel when exposed severe heating one side, as would likely occur during fire building. Tests were performed on large- and medium-scale precast CFRP-reinforced prestressed specimens. Large-scale tested standard fire-resistance test, while using novel Heat-Transfer Rate Inducing System (H-TRIS) that controls thermal exposure by imposing time-history incident heat flux at specimen’s surface. The formation thermally-induced failure cover provide sufficient confining action, thus bond strength, is shown be more for FRP-reinforced elements than those steel. This appears least partly due thermomechanical incompatibility between CFRP reinforcement concrete; related rapid expansion tendons relative surrounding concrete. Many aspects performance elevated temperature remain poorly understood, these require additional investigation before can used fire-rated applications confidence.
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ژورنال
عنوان ژورنال: Journal of Composites for Construction
سال: 2022
ISSN: ['1943-5614', '1090-0268']
DOI: https://doi.org/10.1061/(asce)cc.1943-5614.0001260