Fines Classification Based on Sensitivity to Pore-Fluid Chemistry
KAUST DepartmentPhysical Sciences and Engineering (PSE) Division
Earth Science and Engineering Program
Ali I. Al-Naimi Petroleum Engineering Research Center (ANPERC)
MetadataShow full item record
AbstractThe 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. © ASCE.
CitationJang J, Carlos Santamarina J (2016) Fines Classification Based on Sensitivity to Pore-Fluid Chemistry. Journal of Geotechnical and Geoenvironmental Engineering 142: 06015018. Available: http://dx.doi.org/10.1061/(asce)gt.1943-5606.0001420.
SponsorsSupport for this research was provided by the DOE, the Goizueta Foundation, and KAUST's endowment. Adrian Garcia helped gather experimental data. Colleagues and anonymous reviewers provided valuable insight, detailed comments, and related information.