偏高岭土对铁铝酸盐水泥性能的影响研究
Study on the influence of metakaolin on the properties of ferroaluminate cement
关键词:
铁铝酸盐水泥;偏高岭土;水化;强度;抗硫酸盐侵蚀性能;电阻率
Key words:
Ferroaluminate cement; Metakaolin; Hydration; Strength; Sulfate corrosion resistance; Electrical resistivity
刊期:
2026年第3期
DOI:
10.19761/j.1000-4637.24080404
文章编号:
基金项目:
湖北省青年科技人才项目(2023DJC182)。
作者:
蒋梦涵1a,廖宜顺1a,1b,1c,*,周 琦2,李文华2
单位:
1.武汉科技大学 a.城市建设学院;b.高性能工程结构研究院;c.城市更新湖北省工程研究中心, 湖北 武汉 430065;2.宜城安达特种水泥有限公司,湖北 襄阳 441415
摘要
摘 要:研究了偏高岭土掺量(0、10%、20%、30%)对铁铝酸盐水泥工作性、抗压强度、电阻率、抗硫酸盐侵蚀性能等的影响,并分析了其水化产物及水化放热情况。结果表明:随着偏高岭土掺量的增加,铁铝酸盐水泥浆体的流动度降低,凝结时间缩短,试件的抗压强度基本降低;适量掺入偏高岭土可以在一定程度上促进铁铝酸盐水泥早期水化,促进钙矾石的生成,且不会生成新的水化产物,在一定程度上提高试件的抗硫酸盐侵蚀性能。
Abstract: The effects of metakaolin content (0, 10%, 20%, 30%) on the workability, compressive strength, electrical resistivity, and sulfate corrosion resistance of ferroaluminate cement were studied. The hydration products and hydration heat release were analyzed. The results show that with the increase of metakaolin content, the fluidity of ferroaluminate cement paste decreases, the setting time is shortened, and the compressive strength of the specimens basically decreases. Appropriate addition of metakaolin can promote the early hydration of ferroaluminate cement and the formation of ettringite to a certain extent, without generating new hydration products, thus improving the sulfate corrosion resistance of specimens to a certain extent.
结论
随着偏高岭土掺量的增加,铁铝酸盐水泥浆体的流动度降低,凝结时间缩短,试件的抗压强度基本降低。适量掺入偏高岭土可以在一定程度上促进铁铝酸盐水泥早期水化,促进钙矾石的生成,且并不会生成新的水化产物,在一定程度上提高试件的抗硫酸盐侵蚀性能。
硫酸盐对铁铝酸盐水泥的侵蚀是一个长期过程,铁铝酸盐水泥混凝土暴露在自然环境下,需要开展长周期耐久性能测试。此外,海水中存在多种离子,对铁铝酸盐水泥混凝土的侵蚀机理更复杂,今后的研究需要进一步探讨多因素耦合侵蚀对铁铝酸盐水泥混凝土性能的影响,致力于应用于海洋工程。
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引用本文
蒋梦涵,廖宜顺,周琦,等.偏高岭土对铁铝酸盐水泥性能的影响研究[J].混凝土与水泥制品,2026,53(3):99-104. JIANG M H,LIAO Y S,ZHOU Q,et al.Study on the influence of metakaolin on the properties of ferroaluminate cement[J].China Concrete and Cement Products,2026,53(3):99-104 (in Chinese).
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