Estudo das características físicas de um solo de Campo Mourão por meio de ensaios de laboratório
The subtropical, tropical and high-altitude tropical climates are predominant in the center-south region of Brazil. In the past, considerable areas where the state of Paraná currently is underwent intense basaltic spills, which gave rise to the very fertile and reddish brown / chocolate brown soil p...
| Autor principal: | Batelo, Leda Cristina Elias |
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| Formato: | Trabalho de Conclusão de Curso (Graduação) |
| Idioma: | Português |
| Publicado em: |
Universidade Tecnológica Federal do Paraná
2021
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| Assuntos: | |
| Acesso em linha: |
http://repositorio.utfpr.edu.br/jspui/handle/1/25124 |
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| Resumo: |
The subtropical, tropical and high-altitude tropical climates are predominant in the center-south region of Brazil. In the past, considerable areas where the state of Paraná currently is underwent intense basaltic spills, which gave rise to the very fertile and reddish brown / chocolate brown soil present in several cities of this state. Due to the regional climate, this soil is called tropical and its behavior is very different when compared to the soils normally formed in temperate countries. Among other things, such differences are due to processes of evolution of the layers that make up the subsoil profile, which occur along geological time with actions of weathering. In order to classify soils of this nature, the methodology MCT (Miniature, Compacted, Tropical) is more recommended, since it takes into account aspects more representative of the tropical soils, when used in paving, for example. On the other hand, not all laboratories of Soil Mechanics have available the necessary equipment for the use of the aforementioned methodology. In this context, the present study investigates the typical values of physical characteristics of the soil that constitutes the most superficial layer of the campus of the Federal Technological University of Paraná, Campus Campo Mourão, based on the traditional laboratory tests carried out in this institution. The results obtained in this paper were compared with the data of other studies similar to this, available in the technical literature on this topic. The arithmetic mean of the limits of liquidity and plasticity were 55% and 29%, respectively. The mean value of the specific mass of the solid particles constituting the investigated soil was 2,92 g / cm³. Soil particle size analysis, performed in this paper without the use of deflocculant, showed that at least 50% of the samples tested, by mass, are solid particles with equivalent diameters of less than 0.002 mm, that is, clay soil. According to the different soil classification systems commonly used, the samples were classified as A-7-6, with group indices varying from 28 to 31 (AASHTO system), CH, that is, a clay of high plasticity (by SUCS) and a clay-silt, according to NBR 6502 (ABNT, 1995). Therefore, the local soil was classified as clayey, through the use of more conventional systems to classify these materials. In general, the comparison of the results obtained in this research with data from the literature showed that the values are within the range that characterizes the residual soils of basalt, common in southern Brazil. |
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