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(Article of periodic en Anglais - 2014)

Document title

Using fluidized bed and flume experiments to quantify cohesion development from aging and drainage

Authors(s) and Affiliation(s)

NOUWAKPO S.K. (1) ; HUANG C.-H. (2) ; WELTZ M. (3) ; PIMENTA F. (4) ; CHAGAS I. (4) ; LIMA L. (4) ;
(1) Univ. of Nevada Reno, Natural resources and Environment Sciences, Reno, ETATS-UNIS
(2) USDA-ARS-MWA, National Soil Erosion Research Lab., West Lafayette, ETATS-UNIS
(3) USDA-ARS, Exotic and Invasive Weeds Research Unit, Nevada, Reno, ETATS-UNIS
(4) Federal Univ., Engineering DEG/UFLA, Lavras, BRESIL

Abstract

The goal of this study was to quantify changes in soil cohesion due to aging and subsurface hydrologic condition using a fluidized bed method. A flume experiment was also used to verify that findings from the fluidized bed experiment translated into measurable changes in soil erodibility. Tests were performed on 3 different soils (a Miami soil, a Cecil soil and Crosby–Miami soil complex). Changes in soil cohesion due to aging and drainage state were successfully detected by the fluidized bed technique. For all soils tested, cohesion developed in a two-stage process where an increase in cohesion with aging duration immediately after the soil was rewetted, was followed by a decrease in cohesion which often started after 24 h of aging. Trends in soil rill erodibility Kr with aging duration measured in the flume experiment were consistent with the two-stage pattern observed in soil cohesion estimates but the legacy effect of suction applied at field capacity faded after 72 h of aging

Source

Article of periodic

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 2014, vol. 39, no6 [pp. 749-757]

Bibliographic references : 1 p.

Collation : 6 fig., 2 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.3477

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2014
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