Comparative site tests for various types of cone penetrometers in peat ground

摘要

With the objective of examining the accuracy of electric cone penetration tests (CPT) performed in peat layers, we conducted tests to compare electric cone penetrometers with Dutch double tube cone penetrometers, which have been used conventionally. Test results showed that electric cone penetrometers demonstrated test accuracy equal to that of Dutch double tube cone penetrometers, and the following correlations were found: qmechanical = 0.85 qt for clay and organic clay layers and qmechanical = qt for peat layers ("qmechanical" refers to penetration resistance measured using Dutch double tube cone penetrometers [Dutch cone penetration resistance] and "qt" refers to penetration resistance measured using electric cone penetrometers [CPT resistance]).