| 电化学除盐模型及离子迁移过程的数值分析 |
| |
| 引用本文： | 祝频,王新祥,韦江雄,郑靓,余其俊.电化学除盐模型及离子迁移过程的数值分析[J].武汉理工大学学报,2011(5):41-47. |
| |
| 作者姓名： | 祝频 王新祥 韦江雄 郑靓 余其俊 |
| |
| 作者单位： | 广东建设职业技术学院;广东省建筑科学研究院;华南理工大学材料科学与工程学院; |
| |
| 基金项目： | 国家自然科学基金(50602016;50972045) |
| |
| 摘 要： | 建立了电场作用下混凝土内部离子迁移模型;结合混凝土的试验参数和经验常数,确定合适的边界条件,理论分析了电化学除盐过程中混凝土内部Cl-和Na+的迁移规律;将电化学除盐后混凝土内部不同部位Cl-含量和Na+含量与模拟结果进行比较分析。结果显示,模拟结果和实测结果一致,验证了模型的有效性和合理性。其规律为:电场作用一段时间后,氯离子在试件径向呈现上凸曲线分布,即在混凝土内某个部位Cl-含量出现极值;随着电流作用时间的延长,混凝土内部Cl-含量逐渐降低,且Cl-的排除速率逐渐减小,而Na+逐渐在钢筋附近混凝土中聚集。
|
| 关 键 词： | 电化学除盐 电场 Na+/Cl- 迁移 |
Model and Numerical Analysis of Ions Migration in Concrete During the Process of Electrochemical Chloride Extraction |
| |
| ZHU Pin,WANG Xin-xiang,WEI Jiang-xiong,ZHENG Liang,YU Qi-jun.Model and Numerical Analysis of Ions Migration in Concrete During the Process of Electrochemical Chloride Extraction[J].Journal of Wuhan University of Technology,2011(5):41-47. |
| |
| Authors: | ZHU Pin WANG Xin-xiang WEI Jiang-xiong ZHENG Liang YU Qi-jun |
| |
| Affiliation: | ZHU Pin1,WANG Xin-xiang2,3,WEI Jiang-xiong3,ZHENG Liang2,YU Qi-jun3(1.Guangdong Construction Vocational Technology Institute,Guangzhou 510450,China,2.Guangdong Academy of Construction and Architecture Science,Guangzhou 510500,3.College of Materials Science and Engineering,South China University of Technology,Guangzhou 510640,China) |
| |
| Abstract: | In this paper,the model of ions migration in concrete has established under the electric field.Na+,Cl-ions migration law was analyzed theoretically during the process of electrochemical chloride extraction(ECE) based on the experimental parameters,empirical constants and suitable boundary conditions.The content of Na+ and Cl-ions in concrete after ECE is agree with simulating results,which shows the model of this paper is effective and reasonable.Both experimental results and simulating results indicate tha... |
| |
| Keywords: | electrochemical chloride extraction(ECE) electric field Na /Cl-ions migration |
| 本文献已被 CNKI 等数据库收录！ |
|
