硅酸盐学报2017，Vol.45Issue(11)：1621-1628,8.DOI:10.14062/j.issn.0454-5648.2017.11.08
碳化混凝土硫酸钠盐结晶破坏
Sodium Sulfate Salt Crystallization Distress on Carbonated Concrete
摘要
Abstract
Concrete specimens with different water-cement ratios and different dosages of fly ash and slag were carbonated for 10 d and 20 d and then partially exposed into 10% Na2SO4 solution under the condition of (20±1)℃, (60±5)% relative humidity. The mass loss rate of specimen was measured and the visual observation of damaged concrete was compared. The results show that the concrete carbonation accelerates its failure. The evaporation zone of concrete specimens with fly ash and slag was damaged more severely rather than the ordinary concrete due to the greater carbonation depth. Based on the results by X-ray diffraction, the sodium sulfate crystallization in the carbonated concrete causes the concrete failure.关键词
硫酸盐侵蚀/硫酸盐物理侵蚀/硫酸钠/混凝土碳化Key words
sulfate attack on concrete/physical sulfate attack/sodium sulfate/concrete carbonation分类
建筑与水利引用本文复制引用
刘赞群,候乐,邓德华,张丰燕,胡文龙..碳化混凝土硫酸钠盐结晶破坏[J].硅酸盐学报,2017,45(11):1621-1628,8.基金项目
国家自然科学基金项目(51378508)资助项目. （51378508）
