硅酸盐水泥中硫酸盐类型与作用  

Sulfates Type and Effects in Portland Cement

作　　者：钱觉时[1] 韦迎春[1] 邓铃夕[1] 沈燕[1] 侯鹏坤[1] 

机构地区：[1]重庆大学材料科学与工程学院,重庆400045

出　　处：《硅酸盐学报》2014年第2期169-177,共9页Journal of The Chinese Ceramic Society

基　　金：国家自然科学基金(51132010)项目;国家科技支撑项目(2011BAA04B04)资助

摘　　要：硅酸盐水泥中硫酸盐含量虽然很低,但类型众多且作用复杂,细分硫酸盐类型与作用有利于水泥的生产和应用。通过归纳国内外有关硅酸盐水泥中的硫酸盐类型和作用的研究结果,分析了硅酸盐水泥中不同来源硫酸盐的含量变化情况和值得关注的问题。结果表明:硅酸盐水泥来源于熟料和混合材中的原生硫酸盐含量有明显增加趋势;目前水泥SO3含量较低且未区分原生硫酸盐,既不利于发挥硫酸盐的积极作用也不能避免硫酸盐潜在危害。随测试技术的发展,可对水泥中不同类型硫酸盐的作用进行分析,认为我国应从水泥应用角度,加强对硅酸盐水泥中硫酸盐类型和作用的基础理论和应用研究,有利于提高水泥性能和扩大利用高硫酸盐含量的废渣。Although the sulfates content of Portland cement is slight, there are many types and the corresponding complex func- tions of sulfates in Portland cement. It is thus important for Portland cement production and application to distinguish the types and functions of the sulfates. Based on the results of recent studies, sulfate sources of Portland cement in the production and some aspects concerned in future workwere discussed. It is indicated that the content of the original sulfates in the clinker and blended materials increases considerably. The total content of SOa in cement, which is limited usually by the existing standards and regulations, is controlled at a low level in the cement production. With the development of test technology, it is possible to analyze the roles of different sulfates in cement. It is suggested that the theoretical and applied investigations on sulfate classifi- cation and function in Portland cement for the cement application should be strengthened, thus improving the whole performance of cement and enhancing the utilization of the rich sulfate-bearing industrial slags in Portland cement production.

关 键 词：硫酸盐 石膏 氧化硫 高硫灰渣 水泥 

分 类 号：TQ172[化学工程—水泥工业]