Avaliação Do Desempenho De Solos Lateríticos Regionais Pelo Parâmetro De Desgaste Por Abrasão Los Angeles

Abstract

Considering the availability of lateritic soils in the State of Goiás and the significant number of highways that still require paving, this study aims to evaluate the potential of these soils for use in base and sub-base layers of road pavements. The evaluation was conducted based on the guidelines of Service Specification No. 141 (DNIT, 2022), which sets the maximum wear limit of 55% in the Los Angeles Abrasion Test for materials intended for this purpose. The research included a detailed literature review on the characteristics of tropical lateritic soils and the execution of laboratory tests with samples collected from various regions of the state. The samples were subjected to both the Granulometry Test and the Los Angeles Abrasion Test, in accordance with current regulations, to determine the suitability of these materials for use in road infrastructure. A comparative analysis of the results obtained was conducted in line with the technical parameters established by the standard. The results showed significant variations in the levels of wear among the analyzed samples, with some showing satisfactory performance, within the normative limits, while others exceeded the established threshold. These results indicate the need for careful evaluation of the regional characteristics of each sample and suggest that, although lateritic soils hold potential for pavement application, adjustments and mixtures with other materials may be necessary to optimize their performance.