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Geomechanics and Engineering
  Volume 2, Number 3, September 2010 , pages 203-211

Experimental investigation on loading collapse curve of unsaturated soils under wetting and drying processes
Anuchit Uchaipichat

    An experimental program of isotropic loading tests on a compacted kaolin using a conventional triaxial equipment modified for testing unsaturated soils was perform to investigate a loading collapse curve of unsaturated soils along wetting and drying paths. The test data are presented in terms of effective stress on a range of constant suction. The suction hardening behavior was observed for both wetted and dried samples. With the use of an appropriate effective stress parameter, the unique relationship for loading collapse curve for wetting and drying processes was obtained.
Key Words
    wetting-drying processes; unsaturated soils; loading collapse curve; triaxial tests.
Anuchit Uchaipichat: Department of Civil Engineering, Vongchavalitkul University, Nakhon Ratchasima, 30000, Thailand

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