摘要
分析有机酸侵蚀红黏土水泥土复合体对工程结构的耐久性具有重要意义.为研究其侵蚀机理,以昆明红黏土水泥土复合体为研究对象,采用p H值为3.5、4.0、4.5、5.0的富里酸溶液浸泡试件,浸泡时间为200 d.观测浸泡过程中耗酸量和试件表观的变化,研究富里酸水溶液对红黏土水泥土复合体的侵蚀性和作用机理.研究结果表明:富里酸对红黏土水泥土复合体的腐蚀性较弱,其侵蚀过程可分为快速反应和稳定两个阶段,侵蚀效果主要由第一阶段决定.
Analyzing the organic acid eroding red clay-cemented soil composite mass is of great significance for engineering structure durability. To research the corrosion mechanisms,Kunming red clay-cemented soil composite mass specimens is chosen to conduct 200 d immersion test under fulvic acid solution with p H value at 3. 5,4. 0,4. 5,and 5. 0 respectively. The changes of specimen appearance and acid consumption with time are observed to analyze the corrosion and its mechanisms. The results show that fulvic acid has slight corrosivity to the composite mass,and the erosion process is divided into fast and slow sections,the former stage being decisive.
出处
《昆明理工大学学报（自然科学版）》
CAS
2015年第1期35-38,83,共5页
Journal of Kunming University of Science and Technology(Natural Science)
基金
国家自然科学基金项目(51108217)
国家自然科学基金青年项目(51304088)
关键词
侵蚀机理
水泥土
富里酸
浸泡试验
corrosion mechanism
cemented soil
fulvic acid
immersion test
