Estudo do material empregado nas estradas vicinais em Teresina/PI: análise da normativa DNIT 445/2023-ES

Abstract

The quality in the construction of side roads is paramount for the safety of users and for the durability of the infrastructure. The recently published DNIT 445/2023 – ES standard establishes specific guidelines on unpaved roads. The present study focuses on item g) of the standard, section 5.1, which deals with the specification of materials used for primary coating. Thus, the investigation of a deposit used on local roads in the city of Teresina/PI was carried out, in which physical and mechanical characterization tests were carried out to classify the material according to HRB/AASTHO, in order to verify its compliance with the DNIT 445/2023-ES standard and the possible need for classification by the MCT methodology. The correct characterization and classification of soils are essential for the construction of side roads that ensure efficiency and durability, in addition to favoring better mobility conditions and socioeconomic development in the areas served.