אסיף מאגר המחקר החקלאי

Effect of clay charge density and adsorbed ions on the rheology of montmorillonite suspension

Year:

1989

Source of publication :

Authors :

Volume :

53

Co-Authors:

Keren, R., Inst. of Soils & Water, ARO, The Volcani Center, Bet Dagan, Israel.

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Abstract:

The rheological characteristics of montmorillonite suspension as a function of exchangeable sodium percentage (ESP), (when the complementary cation is either Ca2+ or Mg2+) and specific electrostatic charge density were studied in aqueous media at a clay concentration of 25 g kg-1, at pH 7 and temperature of 25oC. The differential viscosity and the extrapolated shear stress values of the various smectites (the electric charge density varied between 0.91 and 1.22 molc kg-1) suggest that the extent of particle-particle interaction in clay suspension decreases with increases in electrostatic charge density of smectites. -from Author

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