Ensaios de palheta de campo em argilas moles da Baixada Fluminense

Abstract

Describes an experiment using a "Field Vane Test Apparatus", to determine the in situ shear strength of three deposits of a very soft plastic clay in Rio de Janeiro, Brazil. The author comments the performance of the equipment used and suggests some modifications. A bibliographic review on this subject is presented, and the variation with depth of the undrained shear strength of the three deposits of soft clay is another topic investigated. Computation was made provided the clays were isotropic materials as far as undrained strength is concerned. After determining the strength in the way described above the strength anisotropy characteristics have been tentatively evalueted by Aas' (1965) and Wiesel's (1973) methods. The conclusions and sugestions are presented in order to show limitations, advantagens and pratical implications of this in situ test.