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OF NON-NEWTONIAN CLAY SLURRIES

Non-Newtonian flow behaviour in the laminar region is related to the rheological characteristics and the pressure losses could be predicted by integration of the constitutive rheological model. For turbulent flow, the prediction of the pressure losses stills one of the difficult theoretical and practical problems. The aim of the paper is experimentally investigate the flow behaviour of the non-Newtonian clay slurries. Kaolin and peptized kaolin slurries of different concentrations were tested by a pipeline test loop in both laminar and turbulent regimes. Predictive models were applied to fit the experimental data. The similarity of non-Newtonian turbulent flow behaviour with that of Newtonian one has been confirmed.