| Popis: |
Traditional reinforced concrete is one of the most used components in structures in Brazil. This is due to its characteristics of workability, mechanical resistance, and practicality in execution. However, this component usually presents, throughout its useful life, several pathological manifestations related to steel reinforcements. For this reason the construction industry has sought to develop materials with characteristics of high mechanical performance and that present high durability throughout their useful life. It is in this context that non-metallic reinforcements based on fiber-reinforced polymers (FRPs) have emerged. Thus, the work presents an experiment that compares the mechanical strength of concrete beams with non-metallic reinforcements to the mechanical strength of beam with reinforced concrete with metal reinforcement. This study seeks to verify if there is technical feasibility of replacing steel reinforcement by these materials, thus enhancing the durability of the structure and reducing the need for maintenance or interventions throughout its useful life. The result of the study shows that both the beam reinforced with bars of polymers reinforced with glass fibers (GFRP) and the beam with mesh of polymers reinforced with glass fibers (GFRP) presented good characteristics of mechanical resistance when subjected to loading until its rupture. With this it was possible to conclude that in addition to the non-metallic reinforcements provide the reduction of incidence of pathological manifestations in the structure, these still meet the high performance requirements required for the structural parts studied. |
