重庆科技学院学报（自然科学版）2024，Vol.26Issue(1)：100-108,9.DOI:10.19406/j.issn.1673-1980.2024.01.017
干湿循环作用下高韧性水泥基复合材料抗氯离子腐蚀寿命预测
Prediction on Service Life of Chloride Ion Corrosion Resistance of High Toughness Cement-Based Composites Under Dry and Wet Cycles
摘要
Abstract
In order to predict the service life of high-toughness cement-based composites under dry and wet cycles,firstly,a chloride ion erosion model with saturation and time as variables was established based on the transport boundary conditions of chloride salt solution and chloride ion diffusion erosion boundary conditions.Then,consid-ering the corrosion age,temperature,physical adsorption and chemical bonding,saturation and other factors,the chloride ion diffusion coefficient is modified.Finally,chloride ion erosion is simulated with experimental data.The experimental results showed that the chloride ion concentration and the chloride ion erosion depth of ECC surface increased with the increase of the number of dry and wet cycles.With the increase of corrosion age,the scope of corrosion of steel bars becomes larger and larger.When the thickness of the concrete protective layer is 50 mm,the critical age of the internal steel bar without corrosion is 7 a.关键词
干湿循环/ECC/氯离子侵蚀/寿命预测Key words
dry and wet cycles/ECC/chloride ion erosion/predication on service life分类
土木建筑引用本文复制引用
王坛华..干湿循环作用下高韧性水泥基复合材料抗氯离子腐蚀寿命预测[J].重庆科技学院学报（自然科学版）,2024,26(1):100-108,9.基金项目
近海公路建设与养护新材料技术应用交通运输行业研发中心开放基金"自愈合耐腐蚀管桩关键性能研究"(2021-KF-09) （2021-KF-09）
