Influencia de los distintos tratamientos superficiales de las barras de fibra de carbono en su comportamiento adherente con el hormigón

Abstract

Lately, due to the high cost of repairing concrete structures with steel on the effect of corrosion, designers have become aware of the need for new substitutes of corrugated steel bars. These materials must ensure the safety and the service, aesthetic and funnctional conditions of the structure during the lifetime it was designed for.Searching for new materials to replace the corrugated steel bars, carbon fiber reinforced polymer bars (CFRP) appear a few years ago. This type of material is lighter than steel bars. Additionaly, it has a tensile strength greater than steel bars and also solves the problem of corrosion.One of the most important parameters in the design of a structure is checking the bond to the concrete in any thermal conditions. As a result, before introducing this new type of bar it is compulsory to test it. In addition, it is one of the assumptions on which the current design standards of reinforced concrete structures are based.