掺粉煤灰混凝土抗渗性和氯离子扩散性的交流阻抗研究  

Study on the AC Impedance of Impermeability and Chlorion Diffusivity of fly ash Concrete

作　　者：贺鸿珠[1,2] 陈志源[1] 史美伦[1] 刘国飞 

机构地区：[1]同济大学 [2]上海市建筑科学研究院,上海200032

出　　处：《混凝土》2000年第12期55-58,共4页Concrete

摘　　要：本文应用交流阻抗谱方法研究了混凝土的抗渗性和氯离子扩散性。通过对掺粉煤灰混凝土和基准混凝土的性能对比表明 :掺粉煤灰混凝土的氢氧离子扩散系数和氯离子扩散系数均小于基准混凝土 ;在长期海水侵蚀下 ,掺粉煤灰混凝土的氢氧离子扩散系数的氯离子扩散系数亦均远小于基准混凝土。In this paper,impermeability and chlorion diffusion of concrete are measured by way of AC impedance spectroscopy.Based on the contrast between fly ash concrete and standard concrete,it is found that the hydroxide ion diffusion coefficient and the chlorion diffusion coeffcient of fly ash concrete are smaller than that of standard concrete.On the condition of long time seawater corrosion,the hydroxide ion diffusion coefficient and the chlorion diffusion coefficient of fly ash concrete are far smaller than that of standard concrete. 〔

关 键 词：掺粉煤灰混凝土 抗渗性 氯离子 扩散性 交流阻抗 

分 类 号：TU528.201[建筑科学—建筑技术科学]