掺复合掺合料混凝土抗硫酸盐侵蚀性能研究  

Study on Sulfate Resistance of Concrete with Compound Mineral Admixture

作　　者：杨钱荣[1] 唐越[2] 华夏 

机构地区：[1]同济大学先进土木工程材料教育部重点实验室,上海200092 [2]昆明冶金高等专科学校,云南昆明650033 [3]上海众合检测应用技术研究所有限公司,上海200065

出　　处：《粉煤灰综合利用》2010年第2期3-6,共4页Fly Ash Comprehensive Utilization

基　　金：国家基础发展规划"973项目"(2009CB623104)

摘　　要：研究了钢渣-矿渣-粉煤灰复合掺合料的混凝土在硫酸盐及干湿交替硫酸盐环境中的强度、膨胀率及剥落量。结果表明:在干湿循环环境中,硫酸盐结晶引起的破坏远大于化学侵蚀引起的破坏。复合掺合料能有效抑制硫酸盐化学侵蚀引起的膨胀破坏,但掺加复合掺合料的混凝土抗硫酸盐结晶破坏的能力有明显降低。The strength, expansion and amount of scaling of concrete with compound mineral admixture （CMA） from steel slag, granulated blast furnace slag and fly ash were studied. The result shows that damage by crystallization press from sulfate attack under wetting-drying alternation is much larger than that from sulfate chemical attack. Adding CMA to concrete could retard the damage from expansion of concrete caused by sulfate chemical attack, but the resistance of concrete to damage by crystallization press from sulfate attack was remarkably reduced.

关 键 词：掺合料 硫酸盐侵蚀 干湿循环 结晶 

分 类 号：TU528.33[建筑科学—建筑技术科学]