Análise comparativa de vigas de concreto armado com aberturas: reforço convencional com armadura de complementação e reforço com manta de fibra de carbono

Abstract

It is still common to have several projects that include a civil construction that is not compatible, in spite of this stage is extremely important to avoid interference during na execution phase. An important point of compatibility is to foresee the passage of pipes through beams and thereby dimensioning the reinforcement when necessary and foreseen by NBR 6118: 2014. In many cases, this opening is not foreseen in the structural design stage, but it is necessary, and executed after the structural element is already concrete and cured, without the presence of reinforcement.This research aims to verify the use of carbon fiber composite as structural reinforcement, for openings made after the girder is ready-made, has the same performance that conventional reinforcement with CA-50 steel. For this, the best position was defined to make openings in beams without reinforcement, through the Stuttgart test and subsequently analyzed the performance of the Carbon Fiber Blanket reinforcement compared to the reinforcement with CA50 steel and its feasibility for use in the day day-to-day construction.