Associate professor, Lakehead University, Thunder Bay,
Geotechnical engineer, Trow Ontario Ltd., Thunder Bay,
During testing of thinly interbedded varved clay from Thunder Bay, Northwest Ontario, in CIŪ-triaxial tests it was found that B-tests carried out following completion of the consolidation stages and prior to shearing never resulted in B-values close to unity. However, B-values close to 1 were obtained when B-tests were performed after failure. It was further detected from additional B-tests that B-values decreased with increasing stress levels. The test results will be presented and discussed with respect to the structure of the varved clay, which is characterized by thinly interbedded soft clay seams and stiff sandy silt seams.
Paper ID: GTJ10180J