Influence of pore fluid composition on shear strength of reconstituted normally consolidated kaolinite
Influence of pore fluid composition on shear strength of reconstituted normally consolidated kaolinite
Kaolinite is a prominent proxy material in geotechnical engineering that is regularly used in small- and large- scale geotechnical modelling and testing. The material is usually mixed with demineralised water and reconstituted subsequently. This contribution investigates the influence of pore fluid composition on the angle of shearing resistance of very pure kaolinite through CIU triaxial tests. Potassium, sodium and calcium chloride are tested in different concentrations. The results show that adding salt increases the shearing resistance angle. However, other influential factors like pH, valence and atomic radius also play significant roles. Future investigations will expand towards illite and a broader range of studied salt concentrations.
M. Schroeder; Jurgen Grabe
18th European Conference on Soil Mechanics and Geotechnical Engineering (ECSMGE2024)
C - Risk analysis and safety evaluation
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