Effect of Sulfate Ion on the Performance of Polycarboxylate Comblike Copolymers in Cement Suspensions
Source abstract
Abstract
Polycarboxylate comb-like copolymer (PCE) is a kind of polyelectrolyte, which is easily affected by the ions in cement suspensions. In this work, the effects of sulfate ion on the surface charge, adsorption and dispersion in cement system with PCE as dispersant were investigated in detail. The addition of sulfate ion apparently decreased the positive charge on the surface of cement particles. The sulfate ion reduced the adsorption and dispersibility of PCE in cement suspensions, which was due to the competition between sulfate ions and PCE in the adsorption behaviour on the surface of cement particles.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Concrete and Cement Materials Research · Innovative concrete reinforcement materials · Smart Materials for Construction
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Affiliations
State Key Laboratory of High Performance Civil Engineering Materials, Jiangsu Research Institute of Building Science, Nanjing, 210008, China
Jiangsu Bote New Materials Co. Ltd, Nanjing, 210008, China
References (11)
Show source-provided references
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