Rheological properties of concentrated suspensions in the presence of the wall effect

1975 ◽  
Vol 29 (2) ◽  
pp. 1008-1014 ◽  
Author(s):  
V. M. Gorislavets ◽  
A. A. Dunets
Keyword(s):  
Rheological Properties ◽  
Wall Effect ◽  
Concentrated Suspensions

Electrokinetic Research on the Dispersion Behavior of Nano-Ceria Particles in Concentrated Suspensions

2015 ◽  
Vol 645-646 ◽  
pp. 394-399
Author(s):  
Wei Gao ◽  
Qi Long Wei ◽  
Ling Ding ◽  
Xiao Yuan Li ◽  
Chao Wang ◽  
...  
Keyword(s):  
Zeta Potential ◽  
Rheological Properties ◽  
Concentrated Suspensions ◽  
Tem Analysis ◽  
Concentrated Suspension ◽  
Original Solution ◽  
Multi Scale ◽  
Scale Method ◽  
Dispersion Behavior ◽  
Significant Difference

A multi-scale method was developed, which utilized intrinsic relationships among zeta potential of particles, rheological properties of suspensions and particle size distribution (PSD), to analyze dispersion behavior of nanoparticles in concentrated suspensions. It was found that PSD of a kind of nanoceria particles by dynamic light scattering (DLS) method in solution A with concentration 5 wt% accorded well with that by direct TEM analysis, which meant the particles had been dispersed well. However, there had a significant difference when the concentration was increased to 20 wt%. When particles concentration increased from 5 wt% to 20 wt%, zeta potential in solution A changed from-150 mV to-100 mV, while zeta potential in solution B changed from-35mV to-45 mV. Variations of zeta potential of particles accorded well with rheological properties of suspensions too, from phenomenological models. When the suspensions composed by solution A and the nanoparticles with concentration about 20 wt% was diluted with its original solution to 5 wt%, the PSD of nanoceria could be measured indirectly, which accorded well with both that of a suspension prepared directly with near concentration and that from TEM images. Then a method to measure PSD of nanoparticles in concentrated suspension was brought forward.

Rheological properties of concentrated suspensions

1999 ◽  
pp. 1299-1345 ◽  
Author(s):  
P.J. Carreau ◽  
P.A. Lavoie ◽  
F. Yziquel
Keyword(s):  
Rheological Properties ◽  
Concentrated Suspensions

Theoretical and Empiriical Modeling of the Rheology of Fresh Cement Pastes

1992 ◽  
Vol 289 ◽  
Author(s):  
Gebran N. Karam
Keyword(s):  
Experimental Investigation ◽  
Rheological Properties ◽  
Empirical Model ◽  
General Framework ◽  
Theoretical Modeling ◽  
Empirical Modeling ◽  
Rheological Characteristics ◽  
Concentrated Suspensions ◽  
Cement Pastes ◽  
Semi Empirical

AbstractThe most important property of cements and concretes after strength is the workability, which is controlled by the rheological characteristics of the mix. Theoretical modeling having proved complicated and in some cases mathematically untractable, cement specialists have concentrated on empirical based models for the last two decades. The major theoretical contributions to date on the properties of colloidal and concentrated suspensions are summarized and a general framework for theoretical modeling of cement viscosity is established. The empirical modeling and the experimental investigation of the rheological properties of fresh cements are reviewed and discussed. A semi-empirical model is proposed and its validity tested in the interpretation of some published experimental results.

scholarly journals Rheological Properties of Concentrated Suspensions

1961 ◽  
Vol 10 (92) ◽  
pp. 315-318
Author(s):  
Masaharu TAKANO ◽  
Hirotaro KAMBE
Keyword(s):  
Rheological Properties ◽  
Concentrated Suspensions

Rheological Properties of Dense Silica Suspensions

1992 ◽  
Vol 289 ◽  
Author(s):  
J. Chappuis ◽  
D. Guinot ◽  
P. Leture
Keyword(s):  
Rheological Properties ◽  
Silica Particles ◽  
Point Of Zero Charge ◽  
Concentrated Suspensions ◽  
Zero Charge ◽  
Ph Conditions ◽  
Silica Suspensions

AbstractThe rheological properties and microstructure of concentrated suspensions of silica particles in water have been studied. Two typical pH conditions, the effect of the addition of CaCl2 and different mixing procedures have been investigated. When CaCl2 is added, the suspensions become very thick only if the pH is far from the point of zero charge.

scholarly journals Rheological Properties of Concentrated Suspensions

1965 ◽  
Vol 2 (3) ◽  
pp. 336-351
Author(s):  
Takeshi Otsubo
Keyword(s):  
Rheological Properties ◽  
Concentrated Suspensions

Rheological Properties Of Concentrated Suspensions

2002 ◽  
Author(s):  
P Carreau ◽  
F Cotton ◽  
G Citerne ◽  
M Moan
Keyword(s):  
Rheological Properties ◽  
Concentrated Suspensions
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