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

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.