高C_3S水泥与萘系减水剂的适应性分析  

Analysis on adaptability between high-C_3S cement and naphthalene super-plasticizer

作　　者：朱洪波[1] 马保国[1] 董荣珍[1] 胡利民[1] 

机构地区：[1]武汉理工大学硅酸盐材料工程教育部重点实验室,湖北武汉430070

出　　处：《混凝土》2004年第12期26-28,共3页Concrete

基　　金：国家"863"课题(2002AA335050);国家"973"课题(2001CB610704-3)资助

摘　　要：　实验分析了高C3S水泥与萘系减水剂产生适应性问题的原因,高C3S水泥在提高水泥胶凝性的同时由于具有较高的易磨性,使其在粉磨过程中形成较多的细颗粒,其0～2 36μm的颗粒所占比例明显高于其它同级水泥,从而对萘系减水剂产生过多的吸附,早期水化速率较高、消耗更多的水量而造成减水率降低和流动性损失较快,其最有效的解决方法是采用缓凝剂。The reasons why the problems about adaptability occurring between a kind of high-C_3S cement and naphdlalene super-plasticizer are studied in this paper.High-C_3S cement has higher cement capability than currently ones and is easy to be grinded.Much fine particles are produced during grinding.Because the proponion of 0～2.36μm particle of this cement is much higher than others' being on the same stength level.Lager number of naphthalene super-plasticizer is absorbed by high-C_3S cement.Speed of hydration of this cement is higher and more water is used when early,so rate of water-reducing falls and losing of fluidity is quicken.The most efficiency method resolving these problems is to using retarder.

关 键 词：高C3S水泥 萘系高效减水剂 适应性 

分 类 号：TU528.042[建筑科学—建筑技术科学]