Over Consolidation Feature of Clayey Soils in Southern Vietnam According to Piezocone

Abstract

Over-consolidation ratio (OCR) is an important geotechnical parameter for predicting undrained shear strength, lateral pressure ratio and settlement of clayey ground. Based on the reliable data of consolidation test results of samples taken by piston tube and piezocone, relationship between over-consolidation ratio and normalized penetration resistant is established and analyzed. The results show that the relationship of the two quantities can be presented by linear function with coefficient k*, which ranges from 0.17 to 0.22. Using the normalized cone resistance Q_t allows analyzing behavior and stress state of over-consolidated clay more reasonable than the corrected resistance q_t.