Previsão de curvas de retenção por correlações com propriedades dos solos

Abstract

This paperpresents, at first, an abbreviation revision concerning basic concepts about the suction and the capacity of retention of soils unsaturated. Adatabase of 50 characteristic curves was set up, whose curves were adjusted for 6models proposed in the literature.Parameters ofadjustment of the models were determined bythe reduction of erroramong the experimental curves in aniterative way. Subsequently, correlations were accomplished between the parameters of adjustment of the models and some propertiesof the soils. Finally, there were undertaken comparisons among the experimental characteristic curves of some soils and the corresponding estimated curvesfrom the adjusted models. The models of Willians et al.(1983), Brooks and Corey (1964), Fredlund and Xing (1994) and Gardner (1958)provided the most consistentadjustments.