THE USE OF ATHERMOGRAPHY IN VERIFICATION OF PATHOLOGICAL MANIFESTATIONS IN SPECIAL W.
Infrared thermography, viaducts, pathologies, inspection.
Understanding the factors that favor the degradation of viaducts is essential to extend their useful life. Viaducts are exposed to adverse weather conditions, as well as aggressive agents and deterioration mechanisms that compromise the functionality of their structure. In this scenario, the adoption of maintenance programs and the application of non-destructive techniques, such as infrared thermography, play a fundamental role in identifying manifestations. A nondestructive test (NDT’s), which are techniques that inspect materials or equipment without the need to damage them. They can be used in the manufacturing stages. Construction, assembly and maintenance (ADENDI,2015). In the case of viaducts and bridges. END’S can be used even with structures in full operation. In addition to ensuring that pathological manifestations can be detected in the early stages (MEDEIROS.2010) by measuring the infrared radiation emitted by the surface of the material, through a thermographic camera, producing a visual thermal image (thermogram). With the ability to detect hidden internal defects. Thermograms enable two types of surface analysis, namely quantitative (evaluation of temperature data) and qualitative (visualization of thermal contrasts). These two analyzes are based on surface temperature gradients (or thermal contrast). Therefore, the present work is a case study that aims to evaluate the efficiency of infrared thermography in the analysis of pathological manifestations on viaducts. To this end, thermographic images of viaducts located in the city of Brasília “Asa Sul and Asa Norte” will be captured, followed by an analysis of the thermal behavior of the identified anomalies.