Dimensionamento de pavimento flexível: um comparativo entre os métodos DNIT e Medina aplicado a um trecho da avenida Minas Gerais em Governador Valadares (MG)

Abstract

Road transport is the predominant form of transport in Brazil, representing around 75% of cargo and passenger movement. However, the country's road network has only 12.4% of its roads paved, showing a deficit of paved roads. Due to this lack and the importance of the system for the country, the need for a new methodology for sizing asphalt pavements was raised, improving the current method of the National Department of Infrastructure and Traffic (DNIT). The new method, called the National Sizing Method (Medina), incorporates technologies already used in other countries. The study in question compares the design of flexible pavements on Avenida Minas Gerais, close to the Federal Institute of Science and Technology of Minas Gerais, campus Governador Valadares (IFMG-GV), using the empirical method of DNIT and the mechanistic-empirical method of Medina. The result was that the pavement designed using the DNIT method showed a greater thickness of layers and, at the end of the 10-year period, 80% of the cracked area, these two being around 50% larger when compared to the Medina method.