Investigação de jazidas de solos tropicais para uso em pavimentação na região metropolitana de Goiânia - GO
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Data
2010-08-30
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Universidade Federal de Goiás
Resumo
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.
Descrição
Palavras-chave
Solos tropicais , Pavimentação , Metodologia MCT , Ensaios de pastilha , Ensaio de Azul de Metileno , Ensaio de Difratometria de Raios-X , Tropical soils , Paving , MCT , Disk testing , Methylene blue test , Test of X-ray
diffraction , 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
Citação
SILVA, Rita de Cássia. Investigation of deposits of tropical soils for use in flooring in the metropolitan area of ​​Goiânia - GO. 2010. 177 f. Dissertação (Mestrado em Engenharias) - Universidade Federal de Goiás, Goiânia, 2010.