Title: RHEOLOGICAL PROPERTIES OF LATVIAN ILLITE CLAYS |
Authors: Dusenkova Inga, Stepanova Valentina, Vecstaudza Jana, Lakevics Vitalijs, Malers Juris and Berzina-Cimdina Liga |
DOI: 10.13168/AGG.2013.0046 |
Journal: Acta Geodynamica et Geomaterialia, Vol. 10, No. 4 (172), Prague 2013 |
Full Text: PDF file (0.9 MB) |
Keywords: illite, clay minerals, plasticity, apparent viscosity, mineralogical composition, electrical conductivity |
Abstract: The influence of mineralogical composition, electrical conductivity and pH on the rheological properties of Latvian illite
clays has been investigated. Samples from two deposits have been studied. The average plasticity index of samples from both
Laza deposits is 23-25, but from Apriki – around 20. Based on these results, 2 samples with different plasticity indices from
each borehole were chosen for further research. All suspensions exhibit yield-pseudoplastic behavior. Samples with the
highest amount of clay minerals have the highest plasticity index and apparent viscosity. From 3 samples with similar amount
of clay minerals and plasticity index one sample has higher pH and electrical conductivity and therefore exhibits lower
viscosity. |