Small-strain behaviour of cemented soils

Géotechnique ◽  
2012 ◽  
Vol 62 (10) ◽  
pp. 943-947 ◽  
Author(s):  
J. TRHLíKOVá ◽  
D. MAšíN ◽  
J. BOHáč
Keyword(s):  
Small Strain ◽  
Strain Behaviour ◽  
Cemented Soils

Experiments on the small-strain behaviour of crosslinked natural rubber: 1. Torsion

Polymer ◽  
1983 ◽  
Vol 24 (11) ◽  
pp. 1495-1501 ◽  
Author(s):  
G.B. McKenna ◽  
L.J. Zapas
Keyword(s):  
Natural Rubber ◽  
Small Strain ◽  
Strain Behaviour

A New Nonlinear Stress-Strain Model for Soils at Various Strain Levels

2013 ◽  
Vol 631-632 ◽  
pp. 782-788
Author(s):  
Cheng Chen ◽  
Zheng Ming Zhou
Keyword(s):  
Compression Test ◽  
Triaxial Compression ◽  
Small Strain ◽  
Empirical Formulas ◽  
Stress Strain ◽  
Strain Behaviour ◽  
Proposed Model ◽  
Nonlinear Stress ◽  
London Clay ◽  
Strain Model

Soils have nonlinear stiffness and develops irrecoverable strains even at very small strain levels. Accurate modeling of stress-strain behaviour at various strain levels is very important for predicting the deformation of soils. Some existing stress-strain models are reviewed and evaluated firstly. And then a new simple non-linear stress-strain model is proposed. Four undetermined parameters involved in the proposed model can be obtained through maximum Young’s module, deformation module, and limit deviator stress and linearity index of soils that can be measured from experiment directly or calculated by empirical formulas indirectly. The effectiveness of the proposed stress-strain model is examined by predicting stress-strain curves measured in plane-strain compression test on Toyota sand and undrained triaxial compression test on London clay. The fitting results of the proposed model are in good agreement with experimental data, which verify the effectiveness of the model.

Modelling the influence of stress–strain history on the initial shear stiffness of an unsaturated compacted silt

2007 ◽  
Vol 44 (4) ◽  
pp. 463-472 ◽  
Author(s):  
Roberto Vassallo ◽  
Claudio Mancuso ◽  
Filippo Vinale
Keyword(s):  
Unsaturated Soil ◽  
Shear Stiffness ◽  
Small Strain ◽  
Complex Stress ◽  
Strain History ◽  
Strain Behaviour ◽  
Observed Behaviour ◽  
Suction History ◽  
Simple Stress

This is the follow-up paper to Vassallo et al. (2007), which discussed the experimentally observed small-strain behaviour of an unsaturated compacted silt. The influence that suction and, more in general, mean net stress – suction history has on the initial shear stiffness was analysed and ascribed to the accumulation of irreversible volumetric strains. In this study, a model able to predict the observed behaviour is proposed, based on classical unsaturated soil volumetric hardening elastoplastic formulations. Starting from the interpretation of the results relative to simple stress paths, such as preliminary equalization and loading–unloading compression, the results of "complex" stress paths, such as those including drying–wetting cycles, have subsequently been modelled by introducing some additional parameters.Key words: unsaturated, compacted, small strain, stiffness, volumetric behaviour, stress history.

scholarly journals Small Strain Behaviour of a Compacted Subgrade Soil

2016 ◽  
Vol 143 ◽  
pp. 260-267 ◽  
Author(s):  
Ana Heitor ◽  
Buddhima Indraratna ◽  
Cholachat Rujikiatkamjorn
Keyword(s):  
Small Strain ◽  
Subgrade Soil ◽  
Strain Behaviour

Strength behaviour of lime-treated soils in the presence of sulphate

2000 ◽  
Vol 37 (6) ◽  
pp. 1358-1367 ◽  
Author(s):  
P V Sivapullaiah ◽  
A Sridharan ◽  
H N Ramesh
Keyword(s):  
Shear Strength ◽  
Black Cotton Soil ◽  
Strength Development ◽  
Volume Changes ◽  
Treated Soil ◽  
Fine Grained ◽  
Strain Behaviour ◽  
Abnormal Volume ◽  
Stabilized Soil ◽  
Cemented Soils

Lime has been used extensively to improve the shear strength of fine-grained soils. It has been recently reported that the presence of sulphate causes abnormal volume changes in lime-stabilized soil. The paper presents the strength behaviour of lime-treated montmorillonitic natural black cotton soil in the presence of varying sulphate contents after curing for periods of up to 365 days. Alteration of soil–lime reactions in the presence of sulphate affects the strength development by cementation. Consequently, the stress–strain behaviour effective stress paths of soil cured with sulphate are similar to those of normally consolidated soil rather than cemented soils. The reduction in shear strength due to a reduction in effective cohesion intercept occurs for lime-treated soil cured with sulphate for long periods.Key words: clays, cohesion, fabric, friction, shear strength.

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