sistemas de classificações geotécnicas de solos: estudo de caso aplicado à rodovia não pavimentada vcs 346, viçosa, mg geotechnical soil classification systems: case study applied to the vcs 346 unpaved road, viçosa, mg

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ID: 129182
2010
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Abstract
Este artigo aborda uma contribuição às classificações geotécnicas tradicionais de solos Unified Soil Classification System (USC), Transportation Research Board System (TRB) e a Metodologia Miniatura, Compactado, Tropical (MCT) para um caso aplicado à rodovia municipal não pavimentada VCS 346, no Município de Viçosa, MG, considerando-se várias amostras deformadas de solos coletadas no subleito da referida via. Os principais objetivos deste estudo residem na contribuição de um banco de dados geotécnicos sobre classificações de solos tropicais, bem como na verificação de possíveis agrupamentos entre os sistemas geotécnicos tradicionais de classificação e a metodologia MCT. O programa de laboratório envolveu a realização dos seguintes ensaios: (i) granulometria conjunta; (ii) limites de Atterberg (LL e LP); (iii) massa específica dos grãos do solo; (iv) compactação Mini-MCV; e (v) perda de massa do corpo-de-prova por imersão em água. Os resultados possibilitaram verificar que, após a classificação das amostras, vários agrupamentos entre os sistemas de classificações geotécnicas tradicionais coincidiram com aqueles já apresentados na metodologia MCT e, considerando a pedogênese da região de Viçosa, MG, para o grupo NG', houve a contribuição dos grupos SC, SM e CL do Sistema USC e do grupo A-4 do Sistema TRB.
This paper addresses a contribution to the traditional geotechnical soil classifications systems USC (Unified Soil Classification) and TRB (Transportation Research Board), and the MCT methodology (Miniature, Compacted, Tropical) applied to a case study involving the laboratory geotechnical characterization of disturbed samples from the subgrade of the VCS 346 municipal unpaved road, located in Viçosa - MG. The main goals of this study are to contribute to the formation of a database directed to the geotechnical classification of tropical soils as well as to verify possible groupings among the traditional classification systems and the MCT methodology. The laboratory testing program encompassed: (i) grain-size distribution; (ii) Atterberg limits (LL and PL); (iii) unit weight of solid mater; (iv) mini-MCV compaction; and (v) specimen loss of weight via water immersion. After soil samples classifications, the results of this research supports that several groupings between the traditional geotechnical classifications coincided with those proposed in MCT methodology, and considering the region of Viçosa's pedogenesis, regarding the group NG ' there was an addition of the groups SC, SM and CL from the USC System and of the group A-4 from the TRB System.
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Authors Taciano Oliveira da Silva, Carlos Alexandre Braz de Carvalho, Dario Cardoso de Lima, Maria Lúcia Calijuri, João Luiz Lani, Tales Moreira de Oliveira
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Journal journal of veterinary medical research
Year 2010
DOI
10.1590/S0100-67622010000200014
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-67622010000200014
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