欢迎访问《硅酸盐通报》官方网站,今天是

硅酸盐通报 ›› 2025, Vol. 44 ›› Issue (11): 4071-4079.DOI: 10.16552/j.cnki.issn1001-1625.2025.0684

• 极端环境工程材料 • 上一篇    下一篇

硝酸钙与柠檬酸复掺对铁铝酸盐水泥水化过程的影响

李润康1, 廖宜顺1,2,3, 冯登宇1, 周琦4, 李文华4, 李凌云4   

  1. 1.武汉科技大学城市建设学院,武汉 430065;
    2.城市更新湖北省工程研究中心,武汉 430065;
    3.武汉科技大学高性能工程结构研究院,武汉 430065;
    4.宜城安达特种水泥有限公司,襄阳 441415
  • 收稿日期:2025-07-14 修订日期:2025-09-04 出版日期:2025-11-15 发布日期:2025-12-04
  • 通信作者: 廖宜顺,博士,教授。E-mail:liaoyishun@wust.edu.cn
  • 作者简介:李润康(2001—),男,硕士研究生。主要从事特种水泥的研究。E-mail:871855677@qq.com
  • 基金资助:
    国家重点研发计划(2025YFE0110200);湖北省青年科技人才项目(2023DJC182)

Composite Effect of Calcium Nitrate and Citric Acid on Hydration Process of Ferroaluminate Cement

LI Runkang1, LIAO Yishun1,2,3, FENG Dengyu1, ZHOU Qi4, LI Wenhua4, LI Lingyun4   

  1. 1. School of Urban Construction, Wuhan University of Science and Technology, Wuhan 430065, China;
    2. Hubei Provincial Engineering Research Center of Urban Regeneration, Wuhan 430065, China;
    3. Institute of High-Performance Engineering Structure, Wuhan University of Science and Technology, Wuhan 430065, China;
    4. Yicheng Anda Special Cement Co., Ltd., Xiangyang 441415, China
  • Received:2025-07-14 Revised:2025-09-04 Published:2025-11-15 Online:2025-12-04

摘要: 为实现铁铝酸盐水泥基材料早期强度快速发展并避免过快凝结,本研究探讨了硝酸钙与柠檬酸复掺对铁铝酸盐水泥水化过程与物理力学性能的影响。通过水化热、电阻率、流动度、凝结时间、抗压强度、水化产物和孔溶液电导率等分析测试,探讨了不同柠檬酸掺量对铁铝酸盐水泥水化的作用机理。结果表明,硝酸钙和柠檬酸复掺时,随着柠檬酸掺量增加,水泥浆体流动度显著提高,凝结时间延长,水化放热速率与电阻率增加速率降低,而孔溶液电导率显著高于空白组。当柠檬酸掺量从0.1%(质量分数)增大到0.3%时,硬化水泥浆体的28 d抗压强度从54.0 MPa减小到49.0 MPa,钙矾石(AFt)生成量显著减少。

关键词: 铁铝酸盐水泥, 硝酸钙, 柠檬酸, 抗压强度, 水化热, 电阻率

Abstract: In order to realize the rapid development of early strength of ferroaluminate cement-based materials and avoid excessive setting, this study investigated the effect of calcium nitrate and citric acid compound on the hydration process and physical-mechanical properties of ferroaluminate cement. Through the analysis and test of hydration heat, resistivity, fluidity, setting time, compressive strength, hydration products and pore solution conductivity, the mechanism of action of different citric acid content on the hydration of ferroaluminate cement was discussed. The results show that when calcium nitrate and citric acid are mixed, with the increase of citric acid content, the fluidity of cement paste increases significantly, the setting time is gradually prolonged, the hydration heat release rate and resistivity increase rate decrease, and the conductivity of pore solution is significantly higher than that of the control sample. When the content of citric acid increases from 0.1% (mass fraction) to 0.3%, the 28 d compressive strength of hardened cement paste decreases from 54.0 MPa to 49.0 MPa, and the formation of ettringite (AFt) decreases significantly.

Key words: ferroaluminate cement, calcium nitrate, citric acid, compressive strength, hydration heat, electrical resistivity

中图分类号: