Pressão de pré-compressão e comportamento hídrico de um Nitossolo Vermelho distroférrico em função do tamanho de agregados - DOI: 10.4025/actasciagron.v27i3.1464

Joaquim Odilon Pereira; Sérgio Hugo Benez; Suedêmio de Lima e Silva; Manoel Moisés Ferreira de Queiroz; João Candido Bracarense Costa; Rubens André Tabile

doi:10.4025/actasciagron.v27i3.1464

Pre-compression and water content behaviour of a clay soil in function of the aggregate size - DOI: 10.4025/actasciagron.v27i3.1464

Authors

Joaquim Odilon Pereira UFERSA Author
Sérgio Hugo Benez UNESP Author
Suedêmio de Lima e Silva UNIOESTE Author
Manoel Moisés Ferreira de Queiroz UNIOESTE Author
João Candido Bracarense Costa UNIOESTE Author
Rubens André Tabile UNIOESTE Author

DOI:

https://doi.org/10.4025/actasciagron.v27i3.1464

Keywords:

compressão uniaxial, compactação do solo, pressão de pré-compressão

Abstract

Soil compaction has been the subject of intensive research studies in the last ten years, but the mechanisms involved in the soil compaction process still remain barely known. The pre-compression pressure has been used as a procedure for estimating the susceptibility of the soil compaction. The contribution of aggregate size of the soil as well as the effect of water content on soil compaction was investigated in a clay soil during this trial. Disturbed soil samples constituted by aggregated inferior to 2.5 mm A₁ and 9.3 to 19.4 mm A₂ were submitted to a drained uniaxial compression test. The compression index and pre-compression stress and the behavior of the water content were evaluated. The soil compression index decreased with the increase of aggregate size, showing that the virgin compression lines were parallels only with the values of the soil A₂. The pre-compression stress values increased with the reduction of aggregate size and the soil water content. The results of the voids ratios in function of the threshold water content reflect with bigger precision, in soil A₂, the regions of the soil behavior to the compaction with all the applied pressures.

Downloads

Download data is not yet available.

Author Biography

Joaquim Odilon Pereira, UFERSA

Possui Graduação em Engenharia Agrícola pela Universidade Federal da Paraíba (1980), Mestrado em Engenharia Agrícola pela Universidade Federal de Viçosa (1986), Doutorado em Agronomia (Energia na Agricultura) pela Universidade Estadual Paulista Júlio de Mesquita Filho (1996) e Pós Doutorado em Engenharia Agrícola (Dinâmica da interação Solo-máquina) pelo Institut National de la Recherche Agronomique - França (2002). Foi professor associado da Universidade Estadual do Oeste do Paraná no periodo de 1988 a 2006. Atualmente é professor adjunto na Universidade Federal Rural do Semi Ãrido - Mossoró - RN.Tem experiência na área de Engenharia Agrícola, com ênfase em Mecanização e Máquinas Agrícolas, atuando principalmente nos seguintes temas: Dinamica da interação Solo-máquina, compactação do solo, plantio direto, sistema de cultivo e força de tração Currículo Lattes

Downloads

PDF (Portuguese)

Published

2008-03-27

Issue

Vol. 27 No. 3 (2005)

Section

Soils

License

DECLARATION OF ORIGINALITY AND COPYRIGHTS

I Declare that current article is original and has not been submitted for publication, in part or in whole, to any other national or international journal.

The copyrights belong exclusively to the authors. Published content is licensed under Creative Commons Attribution 4.0 (CC BY 4.0) guidelines, which allows sharing (copy and distribution of the material in any medium or format) and adaptation (remix, transform, and build upon the material) for any purpose, even commercially, under the terms of attribution.

How to Cite

Pre-compression and water content behaviour of a clay soil in function of the aggregate size - DOI: 10.4025/actasciagron.v27i3.1464. (2008). Acta Scientiarum. Agronomy, 27(3), 513-519. https://doi.org/10.4025/actasciagron.v27i3.1464