Two deformation mechanisms with granular soils

被引：0
|
作者：
Feda, J. [1 ]
机构：
[1] Acad Sci Czech Republ, Inst Theoret & Appl Mech, Prague, Czech Republic
来源：
Proceedings of the 16th International Conference on Soil Mechanics and Geotechnical Engineering, Vols 1-5: GEOTECHNOLOGY IN HARMONY WITH THE GLOBAL ENVIRONMENT | 2005年
关键词：
D O I：
暂无
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
Creep of granular clay is studied by one-step loading up to 1000 kPa in oedometers. Dry and loose specimens were used. Two phases of creep were found. The first one, up to 104 min., represents a regular secondary compression of semilogarithmic nature and is ascribed to the transformation of inborn fabric (produced by the specimen preparation) into the compression fabric. The other one is formed by a periodic variation of the s-creep and g-creep. S-creep is produced by the diffusion of the oedometric compression from the loaded plate downwards, g-creep results from the nonhomogeneity of the specimen. Granular clay is supposed to model waste clayey (double-porosity) material of open coal mines. Complexity of the creep process even in uniaxial compression points to the difficulty of numerically modelling of problematic soils.
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页码：353 / 356
页数：4
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