环境类型与氯盐浓度对矿渣混凝土表面氯离子浓度的影响  

Effect of Environment Types and Chlorine Salt Concentration on Surface Chloride Concentrate of Slag Concrete

作　　者：肖卫[1] 余红发[1] 翁智财[2] 麻海舰[1] 袁银峰 达波[1] 

机构地区：[1]南京航空航天大学土木工程系,南京210016 [2]铁道科学研究院铁道建筑研究所,北京100081

出　　处：《硅酸盐通报》2015年第1期1-6,共6页Bulletin of the Chinese Ceramic Society

基　　金：国家重点基础研究发展计划(973计划)(2009CB623203);国家自然科学基金项目(51178221;21276264);江苏高校优势学科建设工程资助项目(PAPD)

摘　　要：采用化学分析方法测定了掺加10%-70%磨细矿渣的混凝土在青海盐湖卤水、3.5%NaCl＋5%MgSO4溶液和3.5%NaCl溶液等3种氯盐环境中不同暴露时间的自由氯离子浓度分布,研究了不同环境类型与氯盐浓度对矿渣混凝土表面氯离子浓度的影响。结果表明,矿渣混凝土的表面氯离子浓度随着氯盐浓度增大而增大;暴露环境的离子成分越复杂,混凝土表面氯离子浓度越大;矿渣混凝土的表面氯离子浓度随着暴露时间延长呈非线性函数关系增加。Chloride concentrations of slag concrete which is added 10%-70% slag subjected to three kinds of chlorine salt solutions,namely bittern from salt lake of Qinghai province,3. 5% Na Cl ＋ 5%Mg SO4 solution,and 3. 5% Na Cl solution,were determined by chemical analysis and investigated in different exposed time. The effects of different environment types and chlorine salt concentration on surface chloride concentration were studied. It showed that,surface chloride concentration increases with the increase of chlorine salt concentration and the more complex ions of exposed environment,the higher the slag concrete surface chloride concentration. Surface chloride concentration of slag concrete increases with the increase of exposed time according to the nonlinear function.

关 键 词：矿渣混凝土 环境类型 氯盐浓度 表面氯离子浓度 

分 类 号：TU528[建筑科学—建筑技术科学]