Fines classification based on sensitivity to pore-fluid chemistry
The 75-μm particle size is used to discriminate between fine and coarse grains. Further analysis of fine grains is typically based on the plasticity chart. Whereas pore-fluid-chemistry-dependent soil response is a salient and distinguishing characteristic of fine grains, pore-fluid chemistry is not addressed in current classification systems. Liquid limits obtained with electrically contrasting pore fluids (deionized water, 2-M NaCl brine, and kerosene) are combined to define the soil “electrical sensitivity.” Liquid limit and electrical sensitivity can be effectively used to classify fine grains according to their fluid-soil response into no-, low-, intermediate-, or high-plasticity fine grains of low, intermediate, or high electrical sensitivity. The proposed methodology benefits from the accumulated experience with liquid limit in the field and addresses the needs of a broader range of geotechnical engineering problems.
Additional publication details
|Publication Subtype||Journal Article|
|Title||Fines classification based on sensitivity to pore-fluid chemistry|
|Series title||Journal of Geotechnical and Geoenvironmental Engineering|
|Contributing office(s)||Woods Hole Coastal and Marine Science Center|
|Description||Article 06015018; 8 p.|