Estudo de aplicabilidade dos métodos de dimensionamento e avaliação condicional de serventia para rodovias não pavimentadas da região da fronteira oeste do estado do Rio Grande do Sul

Abstract

This work aims to evaluate the applicability of different methods of sizing primary coating roads, along with a conditional evaluation method usefulness of unpaved road, aiming at the application in dirt roads of the Border West of the State of Rio Grande do Sul region. To this, it was initially performed a literature search in order to establish the methodology of the work, moreover, we selected a primer coating highway, RS 566, which was taken as reference to a case study. Then, as part of the methodology, there was fieldwork and laboratory for characterization of the highway and its constituent materials. The fields of activities consisted of collecting soil samples that make up the structure of each highway and functional analysis of road conditions. Later, in the laboratory they were executed for the collected soil, geotechnical characterization tests, along with specific tests demanded by design methods studied. Regarding the pavement surface conditions, the evaluation was performed by determining the unpaved road condition index. For the design of the dirt road, they applied four different sizing methods, Webster & Alford, Giroud & Noray and Skorseth and Selim I and II. Finally, with this work, we determined the usefulness of condition of the studied stretch of highway that was classified as "POOR", matching the reality of the highway and can thus say that the usefulness of evaluation method by unpaved road condition index generates satisfactory results. Later, the methods sizing primer coating roads were applied, reaching a closeness of results for the different methods used when scaled to different situations analyzing proposals, being able to come to the conclusion that the sizing methods are reliable.