scholarly journals Modelling of the Response of Partially Saturated Non-cohesive Soil Subjected to Undrained Loading

2018 ◽  
Vol 65 (1) ◽  
pp. 11-29
Author(s):  
Waldemar Świdziński ◽  
Jacek Mierczyński ◽  
Marcin Smyczyński
Keyword(s):  
Experimental Data ◽  
Triaxial Compression ◽  
Cohesive Soil ◽  
Original Model ◽  
Saturated Soils ◽  
Cohesive Soils ◽  
Partially Saturated ◽  
Partially Saturated Soils ◽  
Undrained Conditions ◽  
Undrained Loading

AbstractThe paper deals with the modelling of the undrained response of non-cohesive partially saturated soils subjected to triaxial compression. The model proposed is based on an incremental equation describing the pre-failure response of non-cohesive soils during shearing. The original model, developed by Sawicki, was modified by taking into account pore fluid compressibility. The governing equation makes it possible to simulate effective stress paths under undrained conditions. Numerical results are compared with experimental data.

Physical modelling of a dissolved contaminant in an unsaturated sand

1991 ◽  
Vol 28 (6) ◽  
pp. 829-833 ◽  
Author(s):  
B. Cooke ◽  
R. J. Mitchell
Keyword(s):  
Contaminant Transport ◽  
Scaling Laws ◽  
Physical Modelling ◽  
Saturated Soils ◽  
Test Results ◽  
Centrifuge Modelling ◽  
Geotechnical Centrifuge ◽  
Partially Saturated ◽  
Partially Saturated Soils ◽  
Viable Approach

Computer solutions to the problem of dissolved contaminant movements in saturated soils are readily available. However, for partially saturated soils, extreme nonlinearity of some variables and difficulties in determining values for other variables make computer solutions predicting the movement of dissolved contaminants highly unreliable. Physical modelling in a geotechnical centrifuge is presented as a viable alternative to numerical modelling. Scaling laws for physical modelling are presented in this paper, and dimensional analysis is used to identify potential difficulties in application of model test results to prototype situations. Preliminary results of experimental work are presented. These results indicate that centrifuge modelling may be a viable approach to the evaluation of dissolved contaminant transport in partially saturated soils. Key words: contaminant transport, centrifuge, unsaturated.

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