D-异抗坏血酸钠对硫氧镁水泥性能的影响

硅酸盐通报 ›› 2024, Vol. 43 ›› Issue (10): 3534-3540.

D-异抗坏血酸钠对硫氧镁水泥性能的影响

马媛¹, 许峰¹, 马健岩¹, 于礼仪¹, 周业淇¹, 丁向群¹, 张曙², 王宁伟²

1.沈阳建筑大学材料科学与工程学院,沈阳 110000;
2.广东省珠海工程勘察院,珠海 519000

收稿日期:2024-02-23 修订日期:2024-04-30 出版日期:2024-10-15 发布日期:2024-10-16
通信作者: 许峰,博士,副教授。E-mail:fengxu@sjzu. edu. cn
作者简介:马媛(1995—) ,男,硕士研究生。主要从事镁质胶凝材料的研究。E-mail:1005744485@qq. com
基金资助:
辽宁省教育基金服务地方项目(lnfw201909)

Effect of D-Sodium Erythorbate on Properties of Magnesium Oxysulfate Cement

MA Yuan¹, XU Feng¹, MA Jianyan¹, YU Liyi¹, ZHOU Yeqi¹, DING Xiangqun¹, ZHANG Shu², WANG Ningwei²

1. School of Materials Science and Engineering, Shenyang Jianzhu University, Shenyang 110000, China;
2. Zhuhai Engineering Investigation Institute of Guangdong Province, Zhuhai 519000, China

Received:2024-02-23 Revised:2024-04-30 Published:2024-10-15 Online:2024-10-16

摘要/Abstract

摘要： 本文探究了D-异抗坏血酸钠对硫氧镁水泥凝结时间、电导率、抗压强度和耐水性能影响,通过 X 射线衍射、同步热分析和扫描电子显微镜测试对硫氧镁水泥水化产物的物相组成及微观结构进行表征和分析。结果表明:加入化学添加剂D-异抗坏血酸钠能大幅度延长硫氧镁水泥的凝结时间;改性后的硫氧镁水泥中有大量5Mg(OH)₂·MgSO₄·7H₂O(5·1·7)晶相生成,能大幅度提高硫氧镁水泥的抗压强度和耐水性能。

关键词: 硫氧镁水泥, D-异抗坏血酸钠, 凝结时间, 5·1·7相, 抗压强度, 耐水性能

Abstract: The effect of D-sodium erythorbate on the setting time, conductivity, compressive strength, and water resistance of magnesium oxysulfate cement was investigated. The phase composition and microstructure of hydration products of magnesium oxysulfate cement were analyzed using X-ray diffraction, synchronous thermal analysis, and scanning electron microscopy. The results show that the addition of chemical additive D-sodium erythorbate significantly prolongs the setting time of magnesium oxysulfate cement. Additionally, the formation of a substantial amount of 5Mg(OH)₂· MgSO₄·7H₂O(5·1·7) crystalline phase greatly improves the compressive strength and water resistance of magnesium oxysulfate cement.

Key words: magnesium oxysulfate cement, D-sodium erythorbate, setting time, 5·1·7 phase, compressive strength, water resistance

中图分类号:

TQ177.5

马媛, 许峰, 马健岩, 于礼仪, 周业淇, 丁向群, 张曙, 王宁伟. D-异抗坏血酸钠对硫氧镁水泥性能的影响[J]. 硅酸盐通报, 2024, 43(10): 3534-3540.

MA Yuan, XU Feng, MA Jianyan, YU Liyi, ZHOU Yeqi, DING Xiangqun, ZHANG Shu, WANG Ningwei. Effect of D-Sodium Erythorbate on Properties of Magnesium Oxysulfate Cement[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2024, 43(10): 3534-3540.

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