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发明授权
CN101066853B 一种聚醚类超早强型混凝土超塑化剂 有权 转让

一种聚醚类超早强型混凝土超塑化剂
摘要：
本发明涉及一种聚醚类超早强型混凝土超塑化剂，采用如下步骤制备：1)水性自由基共聚反应：由84～94％单体a，5％～15％单体b和1～3％单体c在水性介质中发生自由基共聚反应；2)中和反应：共聚反应结束后，在共聚物中加入由通式(5)或通式(6)所示的烷氧基有机胺d进行中和反应，将共聚物的pH值调整为6.0～7.5。本发明中在很低的掺量下表现出了突出的分散性能和增强效果，尤其是早期增强效果显著，并中后期强度也增长稳定，有利于加快模板周转，提高施工进度；本发明收缩率相当于基准混凝土的90％不到，克服了传统萘系减水剂增大混凝土干燥收缩的缺陷。本发明碱含量低、不含有氯离子，有利于混凝土耐久性的提高。
摘要（英）：

The present invention relates to one kind of super plasticizer of polyether for rapid hardening concrete. The super plasticizer is prepared through the first free radical copolymerization of monomer A in 84-94 wt%, monomer B in 5-15 wt% and monomer C in 1-3 wt% in water-base medium; and the subsequent neutralization reaction of the copolymer and alkoxyl organic amine to regulate the pH value of the copolymer to 6.0-7.5. The super plasticizer has excellent dispersing performance and reinforcing effect, especially obvious early reinforcing effect, and is favorable to raise construction speed and raising the durability of concrete.

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