カオリナイト質粘土のレオロジー特性と可塑性

概要

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The rheological chaacteristics were investigated for the kaolinitic clay green bodies such as Kentucky-Tennessee clay, Hara-Gairome clay and Georgia kaolin by means of a capillary viscometer. The measurement of the viscosity characteristics was well carried out by the correction of the pressure drops in the capillary and between the top of the capillary and the pressure sensor. Those green bodies showed non-Bingham behavior in the water content range of 20 to 40mass%. The plasticity was well characterized with both the values of yield point and non-Newtonian coeffient of viscosity,because the former values correspond to the rigidity against the deformation due to the gravity and the latter values corresponds to the fluidity. The plasticity was evaluated from both the values. The order of the plasticity was found to be Kentucky-Tennessee clay < Hara-Gairome clay < Georgia kaolin.
日本粘土学会の論文
1999-06-30