Caracterização geotécnica dos solos do Baixo Jaguaribe para uso em pavimentação

Abstract

This work aims to perform the geotechnical characterization of the soils of Baixo Jaguaribe using paving. The geoenvironmental characterization of the region was accomplished through bibliographic research and the creation of thematic maps with respect to the physical and environmental characteristics. They are: climate, relief, vegetation, hydrography, geology, pedology and road network of the microregion. With this information, it was possible to determine the soil collection points. The collected materials were subjected to testing and then a geotechnical characterization was performed based on the traditional classification, using the AASTHO system, even more rarely used on the road and in the unconventional classification by the MCT method. With the results obtained for the AASTHO classification, the soils had their use limited to regularization of the subgrade, not being suitable for use in the upper layers of the pavement. For MCT classification, most of the studied samples were used for use as base and subfloor, presenting high and very high values in the Mini CBR test, which verifies the soil carrying capacity. Regarding the triaxial test, the best model that allowed the verification of soil behavior was the composite model. Through the obtained results, it was possible to design several floors, using the studied materials as a base. It has been selected that soils can be used in granular pavement layers in various traffic requests, confirming their good utility for paving use. Finally, conclude what is the best characterization of the region, you should expand a search to a larger amount of soil, in order to make a search for application in the area more valid.