Abstract The influence of copolymers on the material properties of cement-based materials is closely related to their adsorption and distribution in cement matrix. In this study, the adsorption of organic core-shell corrosion inhibitors based on poly(ethylene oxide)-b-polystyrene (PEO-b-PS) micelles on cement particles and their influence on the early age hydration and workability of cement paste were investigated. The results showed that the micelles rapidly adsorbed on cement particles surface within 40 s. At mesoscale, the micelles distribution was uniform in cement matrix; at microscale they were preferentially adsorbed on positively charged aluminates phases. Due to the efficient adsorption, the particle dissolution and precipitation of hydration products were impeded, leading to the slightly retarded early hydration of C3A; the workability of cement paste was improved, which was attributed to the better dispersion of cement particles associated with the altered surface potential of cement particles and steric hindrance effect provided by the micelles.

中文翻译：

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有机核壳缓蚀剂在水泥颗粒上的吸附及其对新拌水泥早龄期性能的影响

摘要 共聚物对水泥基材料材料性能的影响与其在水泥基体中的吸附和分布密切相关。本研究研究了基于聚（环氧乙烷）-b-聚苯乙烯（PEO-b-PS）胶束的有机核壳缓蚀剂对水泥颗粒的吸附作用及其对水泥浆早期水化和和易性的影响。 . 结果表明，胶束在 40 秒内迅速吸附在水泥颗粒表面。在中尺度上，胶束在水泥基体中分布均匀；在微观尺度上，它们优先吸附在带正电荷的铝酸盐相上。由于高效吸附，阻碍了水化产物的颗粒溶解和沉淀，导致C3A的早期水化略有延迟；