<b>Evaluation of the effects of the hydraulic gradient variation on the permeability of a compacted soil

Autores

  • Weiner Gustavo Silva Costa Universidade Federal do Recôncavo da Bahia
  • Dario Cardoso de Lima Universidade Federal de Viçosa
  • Heraldo Nunes Pitanga Universidade Federal de Viçosa
  • Carlos Ernesto Gonçalves Reynaud Schaefer Universidade Federal de Viçosa
  • Taciano Oliveira da Silva Universidade Federal de Viçosa
  • Claudio Henrique de Carvalho Silva Universidade Federal de Viçosa

DOI:

https://doi.org/10.4025/actascitechnol.v40i1.35052

Palavras-chave:

column percolation, environmental geotechnics, permeability coefficient.

Resumo

The present study evaluated the influence of the hydraulic gradient on soil conductivity changes using data from permeability tests performed in a column percolation test system, in order to represent geoenvironmental engineering applications. A mature residual soil from gneiss, pedologically classified as Red-Yellow Latosol, with 67% of clay, 10% of silt, 23% of sand, 82% of liquid limit and 46% of plastic limit was used in the study. Soil specimens were compacted at the optimum compaction parameters determined at the Standard Proctor effort, i.e., wopt =31.37% and gdmax =13.54 kN m-3. After compaction, it was determined the permeability of specimens under the hydraulic gradients of 15, 66, 85 and 140. The results obtained support that: (i) at the 5% level, there is statistical significant variation in the permeability coefficient according to the hydraulic gradient used in the tests; (ii) from a geotechnical perspective, there is a slight tendency of increasing the permeability coefficient when increasing the hydraulic gradient, but of no significance for geotechnical practical applications.

 

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Biografia do Autor

Weiner Gustavo Silva Costa, Universidade Federal do Recôncavo da Bahia

Írea de Engenharia Civil, Centro de Ciências Exatas e Tecnológicas

Dario Cardoso de Lima, Universidade Federal de Viçosa

Departamento de Engenharia Civil

Heraldo Nunes Pitanga, Universidade Federal de Viçosa

Departamento de Engenharia Civil

Carlos Ernesto Gonçalves Reynaud Schaefer, Universidade Federal de Viçosa

Departamento de Solos

Taciano Oliveira da Silva, Universidade Federal de Viçosa

Departamento de Engenharia Civil

Claudio Henrique de Carvalho Silva, Universidade Federal de Viçosa

Departamento de Engenharia Civil

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Arquivos adicionais

Publicado

2018-04-26

Como Citar

Costa, W. G. S., Lima, D. C. de, Pitanga, H. N., Schaefer, C. E. G. R., Silva, T. O. da, & Silva, C. H. de C. (2018). <b>Evaluation of the effects of the hydraulic gradient variation on the permeability of a compacted soil. Acta Scientiarum. Technology, 40(1), e35052. https://doi.org/10.4025/actascitechnol.v40i1.35052

Edição

Seção

Engenharia Civil

 

0.8
2019CiteScore
 
 
36th percentile
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0.8
2019CiteScore
 
 
36th percentile
Powered by  Scopus

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