Tecnologia dos concretos autocicatrizantes

Abstract

Concrete is one of the primary materials in civil construction, however it is susceptible to some pathological manifestations, among them are cracks. Although small cracks are generally not harmful to the structural integrity of the concrete, they favor the entry of aggressive factors that affect the durability of the material. Large cracks, on the other hand, can corrupt the functionality of the structures, requiring the use of technical repair interventions. Crack repair involves a wide scientific path and new technologies have been developed in order to reduce costs involving repair and inspection techniques, in this perspective the concept of self-healing concrete arises. This technology brings a series of benefits both in reducing expenses with repair and maintenance of structures, as well as in pollution of the environment, since it promotes the reduction of construction of new structures, and consequently the reduction of cement consumption, which great CO2 emitter. The present study has as main objective to introduce the importance of the self-healing properties of concrete through a literature review on the subject.