Investigação de jazidas de solos tropicais para uso em pavimentação na região metropolitana de Goiânia - GO

• Ano de defesa: 2010
• Autor(a) principal: SILVA, Rita de Cássia
• Orientador(a): ROMÃO, Patrícia de Araújo
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Goiás
• Programa de Pós-Graduação: Mestrado em Geotecnia e Construção Civil
• Departamento: Engenharias
• País: BR
• Palavras-chave em Português: Solos tropicais; Pavimentação; Metodologia MCT; Ensaios de pastilha; Ensaio de Azul de Metileno; Ensaio de Difratometria de Raios-X; 1.Solos tropicais 2.Pavimentação 3.Metodologia MCT 4.Ensaios de pastilhas 5.Ensaio de azul de metileno 6.Ensaio de difratometria de raio-x
• Palavras-chave em Inglês: Tropical soils; Paving; MCT; Disk testing; Methylene blue test; Test of X-ray diffraction
• Área do conhecimento CNPq: CNPQ::ENGENHARIAS::ENGENHARIA CIVIL::GEOTECNICA
• Link de acesso: http://repositorio.bc.ufg.br/tede/handle/tde/1335

Paving is part of infrastructure investment to maintain and enhance economic growth and conditions for improving life quality. It is an activity that depends on selection and extraction of materials and requires high investments, whose availability is often limited and requires minimization of costs at all stages. Therefore, as it promotes a great economy mainly in transport, the use of appropriate materials extracted closest to the area to be paved should be taken into account in selection stage. Besides, conventional materials suitable for use in the pavement structure, such as granular materials, are scarce. Therefore, knowledge of regional materials with appropriate characteristics to the pavement is even more important. The Brazilian experience in using tropical lateritic soils in highways has been highly promising, contradicting the conventional use of the specifications adopted in the temperate regions. This experience has brought the implementation of lateritic soils and structured for this purpose the MCT (Miniature, Compressed, Tropical) methodology. From this context, the main objective of this work is to investigate soils that have suitable properties for use in paving and potential mineral deposits. The research was then conducted in two stages. The first one came from an environmental characterization, based mainly on maps, which allowed the identification of seven points for preliminary assessment of the indicated areas. The samples collected near to the surface were tested by X-ray diffraction, expeditious disk method and chemical analysis. By analyzing these points, two were chosen, where wells were dug for the analysis of soil profile. During this second phase, soil samples collected from these wells were tested for conventional characterization and support capacity by traditional method and by the MCT in order to evaluate these soils with respect to their support capacity to application to pavements. This investigation concluded that the soil properties of the two wells were favorable for the intended use. It is noteworthy, however, that although both belong to the group of Latossolos, they showed signs of being at different stages of weathering. According to the foregoing, it is believed that this research can contribute to the investigation of lateritic clay soils for use in paving as well as to enhance the city's geotechnical information, in the case Goiania, and thereby contribute to the integrated planning of future areas to be paved.