This paper concerns the development of guidelines for routine industrial viscosity and thixotropic measurement. It describes some practical problems encountered. Put simply, it does not seem possible to specify simple thixotropic models and reduce measurement to the determination of material parameters. For dense suspensions, the viscosity is so bound up with the concentration profile developed in viscometers that it is not currently possible to separate them. These problems are of a fundamental nature and require research still. In routine measurement, it is suggested that, for the results to be relevant and useful, viscometers should be used to simulate flow processes and the conditions of testing should closely match those of the application situation.


Flow Process Coaxial Cylinder Particle Migration Critical Shear Rate Dense Suspension 
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  1. 1.
    Cheng, D. C-H., Thixotropic measurement on a bentonite slurry. Res. Rept No. LR 738 (MP/BM), Warren Spring Laboratory, Stevenage, 1989.Google Scholar
  2. 2.
    Cheng, D. C-H., Viscosity measurement on a PVC plastisol as an example of dense suspensions. Res. Rept No. LR 721 (MP/BM), Warren Spring Laboratory, Stevenage, 1989.Google Scholar

Copyright information

© Elsevier Science Publishers Ltd 1990

Authors and Affiliations

  • D. C-H. Cheng
    • 1
  1. 1.(On behalf of Fisons PLC, Scientific Equipment Division)Warren Spring LaboratoryStevenage, HertsUK

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