酸溶液腐蚀下混凝土的腐蚀速率研究
发布时间：2019-04-12 15:02
【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。
[Abstract]:In modern industrial production, the corrosion degree of acid medium to concrete structure is very serious and violent. Using hydrochloric acid and sulfuric acid as acid medium, the acid-resistant corrosion tests were carried out with pH value of 1 in acidic solution, such as the appearance, compressive strength, mass and strength degradation depth of the sample varying with the corrosion time. The experimental results show that: (1) the corrosion of hydrochloric acid on the appearance of concrete is greater than that of sulfuric acid with the same concentration of acidic solution; (2) with the increase of corrosion time, the compressive strength and quality of the sample decrease, but the quality of the sample under sulfuric acid corrosion does not change obviously; (3) with the increase of corrosion time, the strength degradation depth of the specimen increases gradually, and it increases obviously after 120 days of corrosion period.
【作者单位】： 国家核电山东电力工程咨询院有限公司;山东正元建设工程有限责任公司;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;
【基金】：国家自然科学基金项目(51178455) 国家“863”计划课题(2012AA06A402)
【分类号】：TU528
[Abstract]:In modern industrial production, the corrosion degree of acid medium to concrete structure is very serious and violent. Using hydrochloric acid and sulfuric acid as acid medium, the acid-resistant corrosion tests were carried out with pH value of 1 in acidic solution, such as the appearance, compressive strength, mass and strength degradation depth of the sample varying with the corrosion time. The experimental results show that: (1) the corrosion of hydrochloric acid on the appearance of concrete is greater than that of sulfuric acid with the same concentration of acidic solution; (2) with the increase of corrosion time, the compressive strength and quality of the sample decrease, but the quality of the sample under sulfuric acid corrosion does not change obviously; (3) with the increase of corrosion time, the strength degradation depth of the specimen increases gradually, and it increases obviously after 120 days of corrosion period.
【作者单位】： 国家核电山东电力工程咨询院有限公司;山东正元建设工程有限责任公司;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;
【基金】：国家自然科学基金项目(51178455) 国家“863”计划课题(2012AA06A402)
【分类号】：TU528
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