摘要
对华东地区运行15年的某海港码头的构件腐蚀特点进行了调查,调查结果表明,构件的力学性能和保护层厚度基本满足设计要求,但构件电阻率测试值较低,存在腐蚀的可能性;构件的游离氯离子浓度与总氯离子浓度存在一定关系,游离氯离子浓度计算的扩散系数小于总氯离子计算的扩散系数;随着高程的增加,构件的表面氯离子浓度具有降低的趋势;构件混凝土抗氯盐侵蚀存在一定的差别。
The corrosion characteristics in the east of China after 15 years' service was widely surveyed and researched.The results show as follows:Compressive strength of members and concrete cover of members can meet the design demand but member's resistivity is small;there is correlation between free chloride concentration and total chloride ions concentration and free chloride' diffusion coefficient is smaller than total chloride ions';surface chloride ions concentration reduces as elevation increases;the quality and corrosion resistance to chloride salt of members is different.
出处
《混凝土》
CAS
CSCD
北大核心
2010年第12期11-13,共3页
Concrete
关键词
海港码头
调查
表面氯离子浓度
扩散系数
seaport wharf
investigation and analysis
chloride concentration
diffusion coefficient