荷载作用下锂渣粉对混凝土氯离子渗透性的影响.pdfVIP

学兔兔 2014年第 1O期(总第 300期 ) 混 凝 土 理 论 研 究 Number 10 in 2014(Total No．300) Concrete THEORETICAL RESEARCH 荷载作用下锂渣粉对混凝土氯离子渗透性的影响 董海蛟，温 勇。张广泰。唐 巍，李 梅 (新疆大学 建筑工程学院，新疆 乌鲁木齐 830047) 摘 要： 研究了一次加载和循环加载下锂渣粉对混凝土氯离子渗透性的影响，并提出了相应的数学模型。试验结果表明：一次加 载和循环加载对混凝土氯离子渗透性均产生较为显著的影响，电通量与应力比之间都近似满足指数函数关系。当应力比为30％时， 循环加载后的电通量较一次加载增加较多。锂渣粉的加入可以明显降低混凝土的氯离子渗透性，电通量与锂渣掺量之间近似满足二 次函数关系。同时发现，电通量与初始电流具有较好的线性相关陛，与相关研究结果比较一致。 关键词：混凝土；锂渣粉；一次加载；循环加载；电通量 中图分类号：TU528．01 文献标志码：A 文章编号： 1002—3550(2014)10—0012—04 Influence of lithium slag powders on the chloride penetration of concrete under load DONGHaijiao，WENYong，ZHANGGuangtai，TANG Wei，LIMei (Civil Construction College ofXinjiangUniversity，Urumqi 830047，China) Abstract： Effect of lithium slag powders upon the chloride penetration of concre~under once loading and cyclic loading were studied， and the corresponding mathematical model were proposed．The test results show that both once loading and cyclic loading have a signifi— cant impact on the chloride penetration of concrete and the relationship between electric flux and stress ratio approximately agrees with ex— ponential function relation．When the stress ratio is 30％，electric flux after cyclic loading increases more than that after once loading．Addi— tion of lithium slag powder into concrete Can significantly reduce its chloride penetration and the relationship between electric flux and lithium slag powder content is nearly suitable to quadratic function relation．The test also finds that electric flux and initial current has a good linear correlation，compared with the related research results． Key words： concrete；