摘要
混凝土中氯离子扩散过程可以由Fick第二定律描述,利用数值方法分析该扩散过程的关键是恰当选取混凝土中氯离子扩散场计算长度,并据此建立正确的数值分析模型.本文利用误差函数的性质研究建立了混凝土中氯离子扩散场的补偿长度的计算表达式,研究了混凝土中氯离子扩散场的补偿系数取值及补偿原则,并通过算例证明了补偿长度理论对数值模型的重要性和补偿长度系数取值的合理性.
The diffusion field of chloride in numerical model is different from those in analytical model,which is important to solve the problem of chloride diffusion in numerical model.The compensational length of the diffusion field of chloride in concrete is proposed in this paper,which is defined by the compensation coefficient,the diffusion coefficient,and the exposure time.Two examples are given to demonstrate the accuracy and efficiency of the compensational length of the diffusion field of chloride in concrete and the compensation coefficient.
出处
《广西工学院学报》
CAS
2010年第3期8-12,22,共6页
Journal of Guangxi University of Technology
基金
国家自然科学基金(50768001
50762001)
广西科技开发计划课题(桂科能0992028-7)资助
关键词
混凝土
氯离子
扩散场
补偿长度
concrete
chloride
diffusion field
compensational length
