Sample Quality Evaluation of Soft Clays Using Six Types of Samplers

摘要

To investigate the effect of sampling method in sample quality, six types of samplers were used and three boring methods were employed to retrieve coastal clays of Japan (Ariake), Thailand (Bangkok), and United Kingdom (Bothkennar). Unconfined compression tests and residual effective stress measurements were carried out in soil samples taken by the various types of samplers and sampling methods. It has been found that the sample quality from the Japanese sampler is equivalent to that of the large diameter Laval sampler and Sherbrooke sampler. Sample quality of Japanese sampler is significantly influenced by the method of boring.