建筑技术开发2024,Vol.51Issue(4) :8-10.

高浓度硫酸盐、镁盐侵蚀混凝土宏观性能演变规律

THE EVOLUTION OF MACROSCOPIC PROPERTIES OF CONCRETE ERODED BY HIGH CONCENTRATION OF SULFATE AND MAGNESIUM SALTS

万镇珲 肖昭然
建筑技术开发2024,Vol.51Issue(4) :8-10.

高浓度硫酸盐、镁盐侵蚀混凝土宏观性能演变规律

THE EVOLUTION OF MACROSCOPIC PROPERTIES OF CONCRETE ERODED BY HIGH CONCENTRATION OF SULFATE AND MAGNESIUM SALTS

万镇珲 1肖昭然1
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作者信息

  • 1. 河南工业大学土木工程(建筑)学院,郑州 450001
  • 折叠

摘要

通过室内试验的方式配置了清水、浓度50000mg/L和100000mg/L的硫酸镁溶液,通过对外、强度、质量变化率和相对动弹模量对混凝土的宏观性能演变规律进行研究.结果表明,在100000mg/L的硫酸镁溶液中相比浸泡前混凝土相对动弹模量降低近80%,由此可知,高浓度的硫酸镁可对混凝土造成严重的腐蚀.

Abstract

By way of indoor test,clear water,and magnesium sulfate solution with a concentration of 50 000 mg/L and 100 000 mg/L were configured,and the macroscopic property evolution law of concrete was studied by appearance,strength,mass change rate,and relative dynamic elastic modulus.The results showed that,in 100 000 mg/L magnesium sulfate solution,the relative dynamic modulus of concrete was reduced by nearly 80%compared with that before immersion.It shows that the high concentration of magnesium sulfate caused serious corrosion to the concrete.

关键词

硫酸镁/混凝土/化学腐蚀/强度

Key words

magnesium sulfate/concrete/chemical corrosion/strength

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基金项目

国家自然科学基金(51178165)

出版年

2024
建筑技术开发
北京市建筑工程研究院

建筑技术开发

影响因子:0.351
ISSN:1001-523X
参考文献量16
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