DataVXAdvances in Cement ResearchPaper
journal article·2020-10

Effect of chemical structure on dispersity of polycarboxylate superplasticiser in cement paste

Ke Kai, Yao Heng, Wang Yingbin

Advances in Cement Research· Volume 32· Issue 10
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Source abstract

Abstract

This study examines the mechanism of adsorption–dispersion by superplasticisers with varying side chain density in cement paste. Acrylic acid was used to copolymerise with 2-methylprop-2-ene polyethylene glycol, using chain transfer agent to synthesise polycarboxylate ether superplasticisers (PCEs) with comparable main chain lengths and different side chain densities. Gel permeation chromatography, zeta potential, total organic carbon and fluidity tests were used to investigate the adsorption–dispersion of PCE samples in cement pastes with different amounts of tricalcium aluminate (C3A) additive. The results indicate: products with higher side chain densities also have correspondingly shorter main chains, which allows them to form conformations with comparable initial adsorption performance; with C3A added, samples with denser side chains performed better, and their resistance to adsorption became more prominent at higher C3A content.
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Research context

OpenAlex topics: Concrete and Cement Materials Research · biodegradable polymer synthesis and properties · Polymer Surface Interaction Studies

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

State Key Laboratory of Silicate Materials for Architectures, School of Civil and Architectural Engineering, Wuhan University of Technology, Wuhan, P. R. China; Collaborative Innovation Center for Green Light-weight Materials and Processing, Hubei Province Key Laboratory of Green Materials for Light Industry, School of Materials and Chemical Engineering, Hubei University of Technology, Wuhan, P. R. China (corresponding author: )

Collaborative Innovation Center for Green Light-weight Materials and Processing, Hubei Province Key Laboratory of Green Materials for Light Industry, School of Materials and Chemical Engineering, Hubei University of Technology, Wuhan, P. R. China

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