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Shrinkage Geometry of a Heavy Clay Soil at Various Stresses
Author(s) -
Bronswijk J. J. B.
Publication year - 1990
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1990.03615995005400050048x
Subject(s) - shrinkage , subsoil , overburden , saturation (graph theory) , cracking , compaction , geotechnical engineering , geology , bulk density , soil water , mineralogy , materials science , composite material , soil science , mathematics , combinatorics
The shrinkage geometry of a clay soil drying from saturation to oven dryness was investigated. Undisturbed samples in rings measuring 232 cm 3 were taken in the field at depths of 0.0, 0.20, 0.40 and 0.60 m. Overburden pressures at these four depths were determined by wet bulk‐density determination. Samples were oven dried with various loads applied on top. Surface subsidence and total volume decrease after drying were measured. It appeared that, for each soil layer, shrinkage at overburden pressures equal to or larger than field pressures was isotropic. When the load was removed during drying, subsoil samples showed relatively large cracking in comparison with surface subsidence.