矿产综合利用2024，Vol.45Issue(2)：52-58,7.DOI:10.3969/j.issn.1000-6532.2024.02.009
铁尾矿混凝土抗硫酸盐腐蚀性能和微观结构特征
Sulfate Corrosion Resistance and Microstructure Characteristics of Iron Tailings Concrete
苗青 1常剑 2孙博一3
作者信息
- 1. 山西工程科技职业大学,山西 晋中 030619
- 2. 中煤科工集团沈阳研究院,辽宁沈阳 110000
- 3. 辽宁工程技术大学 土木工程学院,辽宁 阜新 123000
- 折叠
摘要
Abstract
This is an article in the field of ceramics and composites.Mechanical properties and durability of sodium sulfate solution corrosion of iron tailings concrete are developed.The effects of different iron tailings content,the number of dry and wet cycles,and the concentration of sodium sulfate solution on its mechanical properties and durability are analyzed.The results show that when the iron tailings content is 30％,the number of dry and wet cycles is 60 times,and the sodium sulfate concentration is 5％,the performance indicators of the concrete reach the best state.With the increasing amount of iron tailings,the better the corrosion resistance and frost resistance of concrete will be.The heat of hydration reaction is constantly decreasing.The porosity of concrete and the change of total mercury volume show a trend of first decreasing and then increasing.Under the same condition of iron tailings content,the change law of the main peak amplitude of concrete after corrosion shows an increasing trend.However,under the same sodium sulfate solution concentration,the main peak amplitude of concrete showed a trend of first decreasing and then increasing after corrosion.关键词
陶瓷及复合材料/铁尾矿/混凝土/质量损失率/水化反应/孔隙率/总进汞体积Key words
Ceramics and composites/Iron tailings/Concrete/Mass loss rate/Hydration reaction/Porosity/Total mercury volume分类
矿业与冶金引用本文复制引用
苗青,常剑,孙博一..铁尾矿混凝土抗硫酸盐腐蚀性能和微观结构特征[J].矿产综合利用,2024,45(2):52-58,7.
