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Type: Artigo de evento
Title: Soil-water Characteristic Curves Obtained Through The Wetting Paths For A Tropical Soil Profile
Author: Bonder B.H.
Miguel M.G.
Abstract: This research presents the soil water characteristic curves (SWCC) for a tropical soil profile, typical of 14% of the region of Campinas, in the state of São Paulo, Brazil. This profile consists of colluvial, lateritic and collapsible silty clay, with an approximate 6.5 m thickness and present in a clayed silt soil. The water level is approximately at 17 m. To determine the curves, the filter paper and axis-translation method with wetting paths were used. Impregnated thin-layer plates were prepared with collected undisturbed samples, so as to obtain their structures in the field along the profile, until a 4.5 m depth. Geotechnical characterization tests and chemical-mineralogical tests were carried out on the disturbed samples. The SWCCs for the soil profile until a 4.5 m depth were the bimodal type, typical of tropical soils with macro and micro-aggregated structures. There were differences between the curves obtained with the different methods, mainly due to the way the wetting paths were carried out on the specimens. These differences are very clear for suctions below 100 kPa, where the influence of macropores is more expressive. © 2011 Taylor & Francis Group, London.
Rights: fechado
Identifier DOI: 
Date Issue: 2011
Appears in Collections:Unicamp - Artigos e Outros Documentos

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