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Correlation between Paste and Concrete Flow Behavior

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The correlation between cement paste rheology and concrete workability in mixtures containing a polycarboxylated acrylate ester was initially seen as poor, in that the admixture dosage required to produce full dispersion in cement paste, as determined using dynamic rheology, was approximately four times the dosage required to produce full dispersion in concrete, as determined using slump and slump loss. A preshear protocol using a high-speed blender to reduce differences in shear history between cement paste and concrete provided a much improved correlation between paste rheology and concrete workability. Adsorption isotherms verified that both pastes and concretes were at full admixture saturation when fully dispersed. [PUBLICATION ABSTRACT]

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									 ACI MATERIALS JOURNAL                                                                                 TECHNICAL PAPER
Title no. 105-M33


Correlation between Paste and Concrete Flow Behavior
by Julissa Hidalgo, Chun-Tao Chen, and Leslie J. Struble

The correlation between cement paste rheology and concrete               behavior offers many potential benefits over concrete, not the
workability in mixtures containing a polycarboxylated acrylate           least of which is the ability to use dynamic rheometry.
ester was initially se
								
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