Effects of Confining Stress During Curing and Shearing on Shear Strength of Lime-Cement Improved Clays-Video

Video Transcription

Video Summary

Solve Hov of NGI presents research on confining stresses during curing and shearing of lime-cement-treated clays using Nordic dry deep mixing. Laboratory tests examined how curing and shearing stresses affect strength, while direct simple shear (DSS) tests assessed whether DSS strength matches half the unconfined compressive strength. Curing stress increased shear strength by about one-third of the applied stress, with the effect most relevant in low-strength columns. DSS results were broadly consistent with the assumed relationship. Field strengths were substantially higher than laboratory strengths, highlighting the need for further research and development of field-testing methods.

Keywords

lime-cement-treated clays

confining stress

direct simple shear

deep mixing

field strength