WET SOLIDS FLOW ENHANCEMENT

National Energy Technology Laboratory (U.S.)

关键词: Limestone;    Tensile Properties;    Void Fraction;    Fractures;    Testing;   

DOI  :  10.2172/797801
RP-ID  :  FG22-95PC95219--12
RP-ID  :  FG22-95PC95219
RP-ID  :  797801

美国|英语

来源: UNT Digital Library

【 摘 要 】

The yield locus, tensile strength and fracture mechanisms of wet granular materials were studied. The yield locus of a wet material was shifted to the left of that of the dry specimen by a constant value equal to the compressive isostatic stress due to pendular bridges. for materials with straight yield loci, the shift was computed from the uniaxial tensile strength, either measured in a tensile strength tester or calculated from the correlation, and the angle of internal friction of the material. The predicted shift in the yield loci due to different moisture contents compare well with the measured shift in the yield loci of glass beads, crushed limestone, super D catalyst and Leslie coal. Measurement of the void fraction during the shear testing was critical to obtain the correct tensile strength theoretically or experimentally.