摘要
进行了盐湖现场暴露和干湿循环环境下钢筋混凝土梁腐蚀试验,分别测定了不同试验环境下钢筋混凝土梁在不同深度的总氯离子浓度和自由氯离子浓度,运用回归分析干湿循环和盐湖现场暴露环境下混凝土氯离子结合能力的相关性系数K与扩散深度、混凝土抗强度的关系。结果表明:随着氯离子扩散深度和混凝土的抗压强度的增加,氯离子结合能力相关性系数K呈指数函数形式递减,研究成果可用于利用干湿循环测定的氯离子结合能力来预测实体结构不同深度内的氯离子结合能力。
Concrete corrosion tests under long＇term immersion and field exposure enviroment were done. The concrete samples total and free chloride ion concentration were measured at different depth under different enviroment. With use of regression method , the relationship between diffusion depths or concrete compressive strengths and chloride bind capacity correlation under immersion and exposure.The result shows that： Chloride bind capacity correlation decreased at a exponential function type with the increase of diffusion depthsandeoncrete compressive strengths. Predocation of field structure bind capacity at different depths utilize the result of longterm immersion chloride bind capacity through the research result .
出处
《粉煤灰综合利用》
CAS
2014年第2期8-10,14,共4页
Fly Ash Comprehensive Utilization
基金
国家重点基础研究发展计划("973"计划)项目(2009CB623203)
国家自然科学基金项目(21276264)
国家自然科学基金项目(51178221)
