State;
Key;
Laboratory;
of;
Hydroscience;
and;
Engineering,;
Tsinghua;
University,;
Beijing;
100084,;
China;
School;
of;
Civil;
Engineering;
and;
Communication,;
North;
China;
University;
of;
Water;
Conservancy;
and;
Electric;
Power,;
Zhengzhou;
450011,;
China;
硫酸盐侵蚀; 劣化机理; 混凝土; 硫酸钠溶液; 硫酸根离子; SA公司; 重量分析法; 化学滴定法;