Quality assessment of undisturbed clay samples based on volumetric strain when consolidated at in situ effective stress

Key Points

• The study aims to evaluate the quality of undisturbed clay samples based on volumetric strain during recompression at in situ effective stress.
• Samples of marine clay were collected for a port and airport project.
• Volumetric strain data were collected and analyzed during the recompression process.
• The study discusses the validity of quality assessment based on volumetric strain.
• Data on volumetric strain during recompression were successfully collected.
• Findings suggest that volumetric strain is a useful indicator of the quality of clay samples.
• The validity of assessing sample quality based on volumetric strain is supported by the analysis.