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| Silva,Reginaldo Barboza da; Dias Junior,Moacir de Souza; Iori,Piero; Silva,Francisca Alcivânia de Melo; Folle,Sergio Mauro; Franz,Claudio Alberto Bento; Souza,Zigomar Menezes de. |
| The objective of this work was to develop uni- and multivariate models to predict maximum soil shear strength (τmax) under different normal stresses (σn), water contents (U), and soil managements. The study was carried out in a Rhodic Haplustox under Cerrado (control area) and under no-tillage and conventional tillage systems. Undisturbed soil samples were taken in the 0.00-0.05 m layer and subjected to increasing U and σn, in shear strength tests. The uni- and multivariate models - respectively τmax=10(a+bU) and τmax=10(a+bU+cσn) - were significant in all three soil management systems evaluated and they satisfactorily explain the relationship between U, σn, and τmax. The soil under Cerrado has the highest shear strength (τ) estimated with the univariate... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cohesion limits; Machine-ground interaction; Mechanical resistance; Precompression stress; Soil compaction; Soil physical quality.. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2015000100082 |
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