| |
|
|
| Registros recuperados : 3 | |
| 1. |  | SANTOS, C. A. C. dos; SILVA, B. B. da; RAO, T. V. R.; NEALE, C. M. U. Energy balance measurements over a banana orchard in the Semiarid region in the Northeast of Brazil. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 44, n. 11, p. 1365-1373, nov. 2009| Biblioteca(s): Epagri-Sede. |
|   |
| Registros recuperados : 3 | |
|
|
|
Registro Completo
|
Biblioteca(s): |
Epagri-Sede. |
|
Data corrente: |
21/07/2011 |
|
Data da última atualização: |
21/07/2011 |
|
Tipo da produção científica: |
Artigo em Anais de Congresso / Nota Técnica |
|
Circulação/Nível: |
-- - -- |
|
Autoria: |
MARKGRAF, W.; HORN, R.; REICHERT, J. M.; REINERT, D. J.; VEIGA, M. da; FLEIGE, H.; GEBHARDT, H.; STRECK, C. A. |
|
Afiliação: |
Epagri |
|
Título: |
Rheological investigations of four brazilian oxisols and a vertisol. |
|
Ano de publicação: |
2006 |
|
Fonte/Imprenta: |
In: REUNIÃO BRASILEIRA DE MANEJO E CONSERVAÇÃO DO SOLO E DA ÁGUA, 16., 2006, Aracajú, SE. Resumos e palestras... Aracajú, SE: SBCS, 2006. p. 1-5. |
|
Idioma: |
Português |
|
Conteúdo: |
Rheological investigations of bentonite suspensions (Ibeco Seal-80), silt- and clay-rich substrates corroborate the hypothesis, that the application of a parallel-plate-rheometer (MCR 300, Anton Paar) is appropriate for a description and quantification of microstructural changes on a particle-particle-scale. Amplitude sweep tests with controlled shear deformation (CSD) have been conducted on homogenised substrates deriving from four montmorillonitic, Fe-oxide-rich Brazilian Oxisols and a kaolinitic Vertisol confirm the applicability of such measuring device in soil mechanics. The influence of soil organic matter (SOM), Fe-oxides, and clay minerals on micromechanical shear behaviour under oscillation has been tested under saturated and drained (@-60hPa) conditions. From collected data, which include parameters as G? (storage modulus), G? (loss modulus), linear viscoelastic (LVE) range and a deformation limit (gL), the dissipation of elasticity in a viscoelastic substance i.e. soil, can be retraced. A comparison of this data has led to the assumption that Fe-oxides are supposed to have a more stabilising effect (s. occurance of pseudosand) than SOM. |
|
Palavras-Chave: |
Amplitude sweep tests; Microstructure; Rheology. |
|
Categoria do assunto: |
-- |
|
|
|
|
Marc: |
LEADER 01695naa a2200157 a 4500
001 1078548
005 2011-07-21
008 2006 bl uuuu u00u1 u #d
100 1 $aEpagri
245 $aRheological investigations of four brazilian oxisols and a vertisol.
260 $c2006
520 $aRheological investigations of bentonite suspensions (Ibeco Seal-80), silt- and clay-rich substrates corroborate the hypothesis, that the application of a parallel-plate-rheometer (MCR 300, Anton Paar) is appropriate for a description and quantification of microstructural changes on a particle-particle-scale. Amplitude sweep tests with controlled shear deformation (CSD) have been conducted on homogenised substrates deriving from four montmorillonitic, Fe-oxide-rich Brazilian Oxisols and a kaolinitic Vertisol confirm the applicability of such measuring device in soil mechanics. The influence of soil organic matter (SOM), Fe-oxides, and clay minerals on micromechanical shear behaviour under oscillation has been tested under saturated and drained (@-60hPa) conditions. From collected data, which include parameters as G? (storage modulus), G? (loss modulus), linear viscoelastic (LVE) range and a deformation limit (gL), the dissipation of elasticity in a viscoelastic substance i.e. soil, can be retraced. A comparison of this data has led to the assumption that Fe-oxides are supposed to have a more stabilising effect (s. occurance of pseudosand) than SOM.
653 $aAmplitude sweep tests
653 $aMicrostructure
653 $aRheology
773 $tIn: REUNIÃO BRASILEIRA DE MANEJO E CONSERVAÇÃO DO SOLO E DA ÁGUA, 16., 2006, Aracajú, SE. Resumos e palestras... Aracajú, SE: SBCS, 2006. p. 1-5.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Epagri-Sede (Epagri-Sede) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Expressão de busca inválida. Verifique!!! |
|
|
