Avaliação de vigas de concreto armado tratadas com adesivo estrutural e protetor de armaduras submetidas ao ensaio de flexão

Abstract

Reinforced concrete structures suffer from a range of pathologies from different origins. However, it is known that the most common pathology in Brazilian works is reinforcement corrosion. Thus, measures must be presented in order to neutralize or reduce these problems. One of the most common ways to reduce the corrosion process is to pre-treat the reinforcement with a product that makes corrosion difficult, in addition to, of course, a well-detailed and dimensioned structural project, and good execution of the work. This work presents a study in order to evaluate the influence of reinforcement treatment with special paints and structural adhesive and its relationship with the adhesion between concrete and steel. For this analysis, reinforced concrete beams were tested, submitted to a bending test; the beams were divided into groups, each submitted to a different treatment. After the tests, it is concluded that beams without reinforcement treatment and with reinforcement treatment present very similar performances, with a variation of -6.54% for the group with adhesive and +0.04% for the group with armor protector.