Estudo de avaliação estrutural de pavimento flexível em alça de viaduto em Maringá-PR

Abstract

The pavement is an element of extreme importance for urban infrastructure and its correct construction and execution of adequade maintenance, provides a more secure and comfortable traffic for the people in city. This work consists on a study of a flexible pavement in order to propose the correction of a few problems on this kind of structure in the city of Maringá-PR. The chosen pavement for this study was a highway junction ramp, such pavement is approximately 20 years old and didn't have proper maintenance, so it presents many visible defects. This work consisted of preliminary studies, like the opening of an inspection window to verify existent layers and the CBR of the subgrade, the Global Severity Index (Índice de Gravidade Global) that shows the general condition of the pavement and the measured deflections with the Benkelman beam, that shows the structure behavior. The conclusion is that the results can lead to mixed solutions for punctual problems, around the milestones that presented a deflection within the permissible, there will be used a milling cutter on cracks of the type FC-3 on existing layers of concrete asphalt to prevent the defect to reflect in the reforce, and around milestones that presented bad deflections, many superficial defects, and a radius curvature below the permissible values, the pavement will be reconstructed from the depth of the subgrade.