新分子结构混凝土引气剂及其合成制备方法研究进展  

Research Development of New Molecular Structure of Air Entraining Agent and Its Synthetic Preparation Methods

作　　者：王栋民[1] 白亚飞 杜文倩 WANG Dong-min;BAI Ya-fei;DU Wen-qian

机构地区：[1]中国矿业大学(北京)化学与环境工程学院混凝土与环境材料研究所

出　　处：《混凝土与水泥制品》2019年第7期17-22,共6页China Concrete and Cement Products

基　　金：国家自然科学基金面上项目(51572293);国家重点研发计划(2017YFC0505904);山西重大专项研发计划(MC2016-02)

摘　　要：基于混凝土引气剂界面活性、起泡原理与稳泡原理出发,从分子结构与合成制备角度介绍了国内外经典的引气剂分子结构类型,阐述了最新国内外新分子结构引气剂及其合成制备方法,讨论并分析了最新国内外新分子结构引气剂在混凝土中所起的作用及其对混凝土工作性、抗冻性等耐久性性能改善与提高的具体影响,叙述和比较了国内外引气剂的优点与不足,提出了“理想”引气剂分子结构具备的要素和特征。有助于更好地从分子结构角度设计并研发出具有优异性能的新型结构引气剂,并解决低坍落度塑性混凝土和无坍落度干硬性混凝土难引气等问题,有利于更好解决混凝土工作性、抗冻性等耐久性问题。Based on the interfacial activity,foaming principle and foam stabilization principle of air entraining agent in concrete,the classical molecular structures of air entraining agent from the perspective of molecular structure and synthetic preparation are introduced,the latest domestic and international new molecular structure of air entraining agent and its synthetic preparation methods are expounded,and the roles of the latest domestic and international new molecular structure of air entraining agent in concrete and its specific impact on the improvement durability of workability and frost resistance in concrete are discussed and analyzed.In addition,the advantages and disadvantages of air entraining agents at home and abroad were reviewed and compared,and the elements and characteristics of molecular structure of the"ideal"air entraining agent were proposed.The results help to better design and develop a new type of structural air entraining agent with excellent performance from the molecular structure of point,which helps to solve problems of air entraining agent in the low-slump plastic and the non-slump drying hard concrete,such as the problem of air induction,and it is beneficial to better solve the durability problems such as concrete workability and frost resistance.

关 键 词：引气剂 作用机理 分子结构 抗冻性 耐久性 混凝土 

分 类 号：TU528.042[建筑科学—建筑技术科学]