Inovações na metodologia de dimensionamento de pavimentos flexíveis de rodovias: O método MeDiNa.

Abstract

The method for sizing of flexible highway pavements still used in Brazil is the DNER Method, currently DNIT, which is based on the CBR test, or ISC. Applications of this method have presented imperfections and premature defects, such as cracking of the coating and sinking in the wheel tracks of vehicles. Given these facts, researchers from several countries, including Brazil, carried out studies on the behavior of materials and performance of pavements throughout their useful life, to improve the current sizing methodology. From these studies emerged the National Pavement Design Method, called MeDiNa, a mechanistic-empirical method, which is a computational program that performs pavement sizing, through the AEMC multi-layer layer analysis routine. The name MeDiNa is a tribute to the engineer Jacques de Medina, who introduced pavement mechanics to Brazil. In this work, a hypothetical application of MeDiNa will be made, the results obtained will be analyzed and considerations will be presented regarding the applicability of the aforementioned method.