Geotechnical Engineering Journal of the SEAGS & AGSSEA ISSN 0046-5828
Vol. 47 No. 1 March 2016
Over Consolidation Feature of Clayey Soils in Southern Vietnam According to Piezocone
By Bui Truong Son, Le Hong Quang, Lam Ngoc Qui
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 Qt allows analyzing behavior and stress state of over-consolidated clay more reasonable than the corrected resistance qt.
KEYWORDS: Soft soil, Over-consolidation ratio, Piezocone, Relationship
