Avaliação do desempenho estrutural de painéis de alvenaria de blocos de concreto reforçados com PRFC

Abstract

The objective of this study was to analyze the structural performance of masonry panels of concrete blocks reinforced with polymer reinforced with carbon fiber (CFRP). The justification for this analysis is the fact that the structural masonry construction method does not allow changes in its architectural design, since the actual sealing elements are structural elements, so needing studies that indicate the technical viability the strengthening of the walls with CFRP for the solution of this problem. For this, beyond resistance, such analysis was focused on evaluating the variation of stiffness of the panel when unreinforced then reinforced, loaded with an uniformly distributed compressive strength, corresponding to 60 % of the final expected load and subsequently to rupture. Among various combinations of parameters interfering in the result, was opted to analysis the interactions between the amount of CFRP strips and their positions. Besides the numerical and experimental analysis of the unreinforced panels, were also tested blocks and prisms reinforced with CFRP which were served as a parameter for better understanding of masonry reinforcement system. Finally, it was verified the efficiency of the use of CFRP in strengthening of the masonry, knowing the influence of the number of strips and the ideal position application.