摘要
本文研究了石膏掺量对阿利特-硫铝酸钡钙水泥抗硫酸盐侵蚀性能的影响,并与硅酸盐水泥进行了比较;利用XRD,SEM-EDS等测试方法对侵蚀后水泥水化产物的物相组成和形貌进行了分析。研究结果表明:阿利特-硫铝酸钡钙水泥具有良好的抗硫酸盐侵蚀性能。当石膏掺量为5%时,阿利特-硫铝酸钡钙水泥的抗蚀系数达1.31,而硅酸盐水泥的抗蚀系数仅为0.94。石膏对阿利特-硫铝酸钡钙水泥硬化浆体的致密性有较大影响,进而影响水泥的抗硫酸盐侵蚀性能。同时,对阿利特-硫铝酸钡钙水泥的抗侵蚀机理进行了初步分析。
Effect of gypsum content on the sulfate resistance of alite-barium calcium sulphoaluminate cement was investigated.Portland cement was taken for comparison.The composition and microstructure of hardened cement pastes were analyzed by X-ray diffraction and scanning electron microscope.The results show that alite-barium calcium sulphoaluminate cement has better ability of sulfate resistance.The coefficient of resistance to sulfate attack with 5% gypsum addition in alite-barium calcium sulphoaluminate is 1.31,while that in Portland cement is only 0.94. Gypsum can affect the tightness of alite-barium calcium sulphoaluminate cement hardened pastes and further influence the ability of resistance to sulfate attack. At the same time, the mechanism of sulfate resistance of alite-barium calcium sulphoaluminate cement was discussed in this paper.
出处
《硅酸盐通报》
CAS
CSCD
北大核心
2009年第5期1038-1041,1045,共5页
Bulletin of the Chinese Ceramic Society
基金
国家973计划(2009CB623101)
山东省自然科学基金(Y2008F49)资助项目
关键词
阿利特-硫铝酸钡钙水泥
石膏
硫酸盐
抗蚀性
alite-barium calcium sulphoaluminate cement
gypsum
sulfate
corrosion resistance
