A resistência residual de solos determinada através do ensaio de cisalhamento por torção

Abstract

The ring shear equipment developed by Bromhead (1979) to measure the soil residual strength is used here. Initially a detailed literature review on the residual strength is presented. It follows a description of equipment and test procedures. For comparison purposes, results of the direct shear tests with polished face are presented, and corresponding equipment and test procedures are briefly described. Results of tests on kaolin-bentonite mixtures for a number of stress levels are presented. Multistage and single-stage testing techniques are used for the Bromhead equipment. The results obtained show the variation of the residual strength both with the stress level and with clay fraction, and are in accordance with those obtained in the literature.