Estudo de caso do comportamento do revestimento asfáltico (tratamento superficial duplo-tsd e microrrevestimento) em rodovia de baixo volume de tráfego (go-154 trecho: go/070 – itaguari)

Abstract

he main mode of transportation in Brazil is road transport, which is carried out through highways. Therefore, Brazil requires greater investments and new techniques for the construction and maintenance of its road network. One technique that has been little used is the composite pavement technique, which consists of combining double surface treatment (DST) with micro-surfacing. The State of Goiás, through GOINFRA (Goiás Infrastructure and Transport Agency), has applied this technique in projects for the reconstruction of sections of state highways.This study aims to evaluate the performance of a segment of highway GO-154, located between GO-070 and Itaguari, with a length of 25.3 km, where this technique was employed due to the light traffic volume, with an N (number of equivalent standard single axle load applications of 8.2 t, taken as standard during the design period) lower than 10⁶. The research assessed, through on-site visits, the behavior of this highway segment using the Continuous Visual Survey (CVS), based on GOINFRA’s IP-06/2018, in order to evaluate the performance of the technique in a low-traffic road.From the development of this work, it was observed that this composite pavement of DST and micro-surfacing presents good performance in low-volume traffic pavements.