The Effect of Ionic Strength on the Rheological Properties of Slag Paste
Slag paste has been widely used in the construction of various types of offshore structures due to its erosion resistance,economy and effective consumption of solid waste.Different ionic strength environments have important effects on the rheological properties of slag cement slurry.In this paper,we test the rheological characteristic parameters of slag cement slurry by setting different ionic environments and analyze the influence mechanism of ionic environments on rheological parameters.The results show that the larger the ionic strength,the larger the flu-idity of slag cement slurry under different water cement ratios.For slag cement slurries with different water cement ratios,the larger the ionic strength of the environment,the smaller and smaller the differences in fluidity and rheological parameters.In the case of different water-to-ce-ment ratio,the ionic strength of slag cement slurry rheological characteristics of the influence of the law is similar.When the ionic strength is increased from 0 to 1,the viscosity of the slurry decreases sharply,and when the ionic strength continues to increase,the viscosity decay tends to be slow.With the increase of ionic strength,the yield stress of the slurry decreased and showed a linear decay trend.The absolute value of zeta potential of slurry and ionic concentration roughly show a linear change rule,and the higher the ionic concentration of slurry the higher the absolute value of zeta potential.
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