Journal
GEOTECHNIQUE
Volume 68, Issue 4, Pages 370-373Publisher
ICE PUBLISHING
DOI: 10.1680/jgeot.16.P.165
Keywords
fabric/structure of soils; partial saturation; silts
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Funding
- China Scholarship Council (CSC) [201406895026]
- Ecole des Ponts ParisTech
- National Sciences Foundation of China [41572284]
- Open Research Fund of State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences [Z013008]
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This note investigates the drying-induced microstructure evolution of reconstituted Jossigny silt through mercury intrusion porosimetry tests. It was observed that when the water content is higher than the shrinkage limit, the pore size distribution (PSD) curve shifts to smaller diameter, but with further drying, the PSD curve starts to shift to larger diameter. This suggests the possible presence of drying-induced internal micro-fissures, which cannot be visualised by the naked eye, and which have developed in the residual shrinkage stage. These fissures are believed to have occurred in the clay fractions and in the interface between silt grain and clay particles.
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