1996 · 11 citations · 0 references
EngineeringMaterials EngineeringMaterials ScienceBuilding MaterialsStructural EngineeringStructural MaterialsComposite MaterialsConcrete MaterialsFiber-reinforced CompositesFlexural PropertiesReinforced Concrete StructuresStructural DesignCarbon Fiber MaterialsCarbon Fiber Reinforced CompositesCarbon Fiber ReinforcementElastic ModulusFlexural BehaviorFlexural RigidityFlexural StrengthFlexural Testing
Lately, bonding carbon fiber (hereafter called CF) sheets to a concrete structure has been developed as a new reinforcing method in Japan. In this study, a series of flexural tests were conducted in order to confirm the reinforcing effect and verify and suggest a new design method. Two kinds of CF sheets were used: high elastic modulus (hereafter called HM) CF and standard (hereafter called I.M.) CF. Based on the results of experiments, the following conclusions were drawn: 1) Reinforcing with CF sheets can increase initial cracking load, flexural strength and rigidity, and decrease strain of rebar. 2) In particular, HMCF exhibits excellent reinforcing effects. For example, in comparison with the control specimen, 2 layer HMCF sheets doubled flexural rigidity. 3) It is confirmed that a combination of conventional elastic theory can be applied to the design of RC beam reinforced with CF sheets.