超细水泥生产工艺、性能及工程应用研究进展

Research Progress on Production Technology,Properties and Engineering Application of Superfine Cement

超细水泥的发明主要是为了解决因普通水泥颗粒粒径较大无法有效注入微细裂缝的难题。超细水泥兼具普通水泥的耐久性好和化学浆材的流动性高的优点,成为水泥基材料由传统材料转向高新技术材料发展的重要开端,在工程中受到广泛使用。本文回顾和总结了近20年来国内外学者对于超细水泥研究所取得的主要进展,对比分析了干磨法和湿磨法制作超细水泥的生产工艺及其优缺点;比较了超细水泥区别于普通水泥的流动性、体积稳定性和力学性能;总结了粉煤灰和矿粉等掺料的加入对超细水泥浆液的性能影响,并在此基础上,对超细水泥在加固和封堵技术中的应用进行了总结,旨在为超细水泥的生产工艺、基本性能以及相关工程应用提供相关参考。

The invention of superfine cement is mainly to solve the problem that particles size of ordinary cement are too large to effectively inject into fine cracks.Superfine cement combines the good durability of ordinary cement and the high fluidity of chemical grouting materials.It has become an important beginning for cement-based materials to change from traditional materials to high-tech materials,which is widely used in engineering.The main progress made by scholars at home and abroad in the research of superfine cement in the past 20 years was reviewed and summarized.The production technology of dry grinding and wet grinding and their advantages and disadvantages were compared and analyzed.The rheology,volume stability and mechanical properties of superfine cement compared with those of ordinary cement were compared.Furthermore,the influences of the addition fly ash,mineral powder and other admixtures on the performance of superfine cement slurry were summarized.On this basis,the application of superfine cement in reinforcement and plugging technology was summarized,aiming to provide relevant references for the production process,basic properties and related engineering applications of superfine cement.