1994 Volume 34 Issue 4 Pages 13-22
A case study is presented of the application of direct shear and cone penetration tests to soil investigation, design and quality control for an expressway embankment constructed on a peaty subsoil with multi-loading stages. Soil investigation results and various correlations to be used for design and quality control obtained from the two tests are presented. Shear strength and degree of consolidation during construction estimated from the cone penetration test are shown and compared with those evaluated from the settlement measurements at the site. In addition, a detailed stability analysis is made on an embankment which failed during the construction at a height of 6.3 m. The degree of consolidation and results of the stability analysis clearly indicated that the direct shear and the cone penetration tests are effective tools for soil investigation, design and quality control for embankment construction on peaty subsoil profiles.
