Effects of Polycarboxylate Superplasticizers with Different Functional Units on Early Hydration Behavior of Cement Paste
Publication: Journal of Materials in Civil Engineering
Volume 31, Issue 5
Abstract
Effects of polycarboxylate superplasticizers (PCEs) with different functional units on the flowability, hydration heat, and hydration products of cement paste were investigated. Two kinds of functional units, the sulfo unit and the amide unit, were mentioned, and four series of PCEs with different monomers were synthesized. It was proved that different functional units had varying influence on fluidity, induction period, heat flow peak, and the amount of hydration products of cement paste. Moreover, a modified model for explaining cement paste hydration with PCEs was propounded to describe the aforementioned effects.
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Acknowledgments
The authors would like to acknowledge the National and Technology Program During the 13th 5-year Plan Period (Grant No. 2016YFC0701004), National Natural Science Joint Foundation of China (Grant No. U1534207), National Natural Science Foundation of China (Grant No. 51678441), and Opening Test Fund for Large-scale Instruments and Equipment of Tongji University (Grant No. 0002016025).
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Information & Authors
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Published In
Journal of Materials in Civil Engineering
Volume 31 • Issue 5 • May 2019
Copyright
©2019 American Society of Civil Engineers.
History
Received: Jun 1, 2018
Accepted: Oct 18, 2018
Published online: Feb 28, 2019
Published in print: May 1, 2019
Discussion open until: Jul 28, 2019
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