聚羧酸系超塑化剂与水泥单矿的界面作用及对单矿水化的影响  

Interfacial Interaction between Polycarboxylate-based Superplasticizer and Cement Component Minerals and Its Impact on the Hydration Behavior

作　　者：俞寅辉[1,2] 冉千平[1,2] 乔敏[1,2] 刘加平[1,2] 

机构地区：[1]江苏省建筑科学研究院有限公司高性能土木工程材料国家重点实验室,南京210008 [2]江苏博特新材料有限公司,南京210008

出　　处：《硅酸盐通报》2012年第6期1503-1507,共5页Bulletin of the Chinese Ceramic Society

基　　金：国家重点基础研究计划(973)项目(2009CB623205)

摘　　要：聚羧酸系超塑化剂(PC)与水泥颗粒间的相互作用是开发新型PC的理论前提,而水泥组成的复杂性使PC与水泥单矿间的作用研究成为热点。本文综述了PC在单矿上的吸附特性及其吸附对单矿zeta电位与水化的影响。PC在单矿上存在不均匀吸附;在铝酸三钙上的插层作用与其分子结构具有内在联系;单矿的zeta电位值与溶液组成息息相关;最后介绍了PC对单矿水化行为及水化产物影响。Interactions between polycarboxylate-based superplasticizer and cement particles are the basic theory for the development of novel designed PC.The impact of PC onto cement component minerals has attracted much attention due to the complex composition of cement.Adsorption characteristic of PC and its effect on the zeta potential and hydration behavior has been well reviewed in this paper.It is established that not a uniform adsorption onto minerals exists.In addition,instinct link between PC architecture and its intercalation into C3A is also presented.It is confirmed that zeta potentials strongly depend on the chemical composition of the solvent.The influence of PC on the hydration behavior and hydration products of cement mineral phase is finally summarized.

关 键 词：聚羧酸系超塑化剂 吸附 ZETA电位 水化 

分 类 号：TU528[建筑科学—建筑技术科学]