酸溶液腐蚀下混凝土的腐蚀速率研究  

Research on the corrosion rate of concrete under different acid solution corrosion

作　　者：阴琪翔[1] 侯明姣 杜健民[3] 刘建秋[1] 商文念[1] 李林[1] 

机构地区：[1]国家核电山东电力工程咨询院有限公司,山东济南250013 [2]山东正元建设工程有限责任公司,山东济南250013 [3]中国矿业大学力学与建筑工程学院江苏省土木工程环境灾变与结构可靠性重点实验室,江苏徐州221116

出　　处：《混凝土》2017年第9期23-25,30,共4页Concrete

基　　金：国家自然科学基金项目(51178455);国家"863"计划课题(2012AA06A402)

摘　　要：现代工业化生产中,酸性介质对混凝土结构的腐蚀程度十分严重和剧烈。以盐酸和硫酸作为酸性介质,开展p H值为1的酸性溶液条件下,试样外观、抗压强度、质量、强度退化深度等随腐蚀时间变化的耐酸腐蚀试验。试验结果表明:(1)相同浓度的酸性溶液,盐酸对混凝土的外观腐蚀性大于硫酸;(2)随腐蚀时间的增加,试样抗压强度和质量均呈减小趋势,硫酸腐蚀下的试样质量变化并不明显;(3)随腐蚀时间的增加,试样强度退化深度逐渐增加,并在腐蚀期120 d后有明显突增。In the process of industrial production,the corrosion degree of the acidic medium to the concrete structure is very serious and violent.With hydrochloric acid and sulfuric acid as the acidic medium, to carry out the pH value of 1 of the acid solution conditions, sample appearance,compressive strength,quality,strength degradation depth and other corrosion time changes with the acid corrosion test. Experimental results show that the acid solution of the same concentration, the appearance of corrosive hydrochloric acid on concrete than the sulfuric acid.With the increase of corrosion time, the compressive strength and quality decreased, the quality of the sample changes under sulfuric acid corrosion is not obvious.With the increase of etching time, specimen strength degradation depth increases gradually, and in 120d corrosion obviously after sudden increase.

关 键 词：混凝土 酸腐蚀 抗压强度 强度退化深度 

分 类 号：TU528.01[建筑科学—建筑技术科学]