Análise do desempenho da ancoragem do reforço de fibras de carbono em vigas submetidas à flexão

Abstract

The reinforcement and recovery of reinforced concrete has become increasingly frequent due to the aging of the structure or the improper application of loads. There is also the possibility that the construction may have been poorly executed and/or planned. Therefore, there are some methods of structural reinforcement, in order to re-adjust the structure in question. This study aims to analyze the reinforcement of carbon fiber composites in reinforced concrete beams subjected to the simple bending stress, evaluating the application of centralized load in bi-supported beams. Were used reference beams without reinforcement, beams with only rolled reinforcements and beams with blades and "U" type anchoring. For that, a theoretical study was made about the subject, afterwards, the application of reinforcements, for then the realization of the tests. By the obtaining of the data, the comparisons of the chosen method with calculated theoretical values and between the different types of applications could be made. With the conclusion of the study, it was possible to conclude that the reinforcement for the simple flexion is efficient and that the application of the extra anchorage is not necessary, since the blade alone is of sufficient length to fulfill the function of straight anchorage. It is very important that there be new studies in the area, with other methods and different analyzes, since reinforced concrete research is still very recent and scarce.