Uso de concreto de pós reativos em reforço de viga biapoiada sujeita a tensões de flexão

Abstract

The main objective of this study was to perform a comparative analysis between a strength of the armadas with conventional armadas and reinforcing beams reinforced with a layer of three centimeters of concrete of reactive powders (CPR). The behavior of the structure with the use of adhesion bridge between concrete types was also analyzed. It is possible to mention as advantages of CPR low porosity and permeability, conferred an increase of resistance to aggressive agents. There is alack of respect for the behavior of reinforced parts with CPR and the behavior of the cold joint when applied adhesion bridge in synthetic resin. Within this context, this work proposes, based on mechanical tests, to present the performance of concretes reinforced with CPR. The results of the tests indicated the re-growth of a superior behavior when subjected to traction. In relation to the use of the adhesion bridge, this is not shown better in the alternatives studied.