School;
of;
Transportation;
Science;
and;
Engineering,;
Beihang;
University,;
Beijing;
100191,;
China;
Jiangsu;
Key;
Laboratory;
of;
Construction;
Materials,;
Southeast;
University,;
Nanjing;
211189,;
China;
结构退化; 海水循环; 弯曲加载; 孔隙结构; 硬化水泥浆体; 扫描电子显微镜; 干湿循环; 能量色散谱;