The Influence of Clay to Water-Reducing Effect of Polycarboxylic

Gui Bo Gao; Yong Wei Wang; Li Ya Wang; Yi Mei Zhang

doi:10.4028/www.scientific.net/AMM.357-360.1115

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 357-360The Influence of Clay to Water-Reducing Effect of...

The Influence of Clay to Water-Reducing Effect of Polycarboxylic

Abstract:

There existed a competitive adsorption of polycarboxylate (PC) molecular between cement particles and clay particles, and the amount of effective adsorption of PC on the cement particles was decreased. The clay particles carry a negative charge, so the Ca²⁺ that produced by the hydration of cement clinker minerals could be adsorbed. The positive charge density on the surface of cement particles was decreased. The amount of effective adsorption of PC on the cement particle surface was also decreased. The basic reason of the reduction of water-reducing rate of PC was the decreased of the amount of effective adsorption of PC on the cement particle surface.

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Periodical:

Applied Mechanics and Materials (Volumes 357-360)

Pages:

1115-1119

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.357-360.1115

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Online since:

August 2013

Authors:

Gui Bo Gao, Yong Wei Wang, Li Ya Wang, Yi Mei Zhang

Keywords:

Adsorption, Clay, Polycarboxylate, Water-Reducing Rate

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