溶液全浸泡的磷酸钾镁水泥浆体中的硫酸盐侵蚀行为研究

doi:10.16552/j.cnki.issn1001-1625.2024.0917

硅酸盐通报 ›› 2025, Vol. 44 ›› Issue (1): 31-39.DOI: 10.16552/j.cnki.issn1001-1625.2024.0917

溶液全浸泡的磷酸钾镁水泥浆体中的硫酸盐侵蚀行为研究

侯宇颖^1,2, 杨建明^1,2,3, 徐晓晖⁴, 胡雪欣³, 陈为亮³, 胡夏闽^1,2, 蒋德权^1,2, 熊才强^1,2, 李涛^1,2

1.三江学院土木工程学院,南京 210012;
2.江苏省低碳材料与绿色结构工程研究中心,南京 210012;
3.盐城工学院土木工程学院,盐城 224002;
4.中建八局第三建设有限公司,南京 210046

收稿日期:2024-08-05 修订日期:2024-09-26 出版日期:2025-01-15 发布日期:2025-01-23
通信作者: 杨建明,博士,教授。E-mail:yjm_kk@163.com
作者简介:侯宇颖(1978—),女,副教授。主要从事MPC材料结构的研究。E-mail:sjhyyy@163.com
基金资助:
国家自然科学基金面上项目(52378265);江苏省建设系统科技项目(2022ZD045);2023年江苏省教育厅江苏高校“青蓝工程”资助项目;江苏省教育科学规划课题(B/2023/01/54)

Sulfate Corrosion Behavior in Solution Fully Soaked Magnesium Potassium Phosphate Cement Slurry

HOU Yuying^1,2, YANG Jianming^1,2,3, XU Xiaohui⁴, HU Xuexin³, CHEN Weiliang³, HU Xiamin^1,2, JIANG Dequan^1,2, XIONG Caiqiang^1,2, LI Tao^1,2

1. School of Civil Engineering, Sanjiang University, Nanjing 210012, China;
2. Jiangsu Engineering Research Center for Low Carbon Materials and Green Structures, Nanjing 210012, China;
3. School of Civil Engineering, Yancheng Institute of Technology, Yancheng 224002, China;
4. China Construction Eighth Bureau Third Construction Co. Ltd., Nanjing 210046, China

Received:2024-08-05 Revised:2024-09-26 Published:2025-01-15 Online:2025-01-23

摘要/Abstract

摘要： 通过宏观性能测试、化学分析和微观分析,本文研究了磷酸钾镁水泥(MKPC)浆体试件浸泡在质量分数为5%Na₂SO₄溶液中的硫酸根离子扩散及强度发展规律。结果表明,随着浸泡龄期的延长,试件内部硫酸根离子的含量逐步提高,侵蚀深度逐渐增加。硫酸根离子的侵蚀深度与硫酸根离子含量之间的关系基本满足2阶或3阶多项式(相关系数R²大于0.998),采用Fick第二扩散定律解析式求解得到MKPC试件的硫酸根离子扩散系数均为10^-7 mm²/s数量级,比硅酸盐水泥混凝土小一个数量级。浸泡龄期不超过180 d时,MKPC试件的硫酸根离子扩散系数呈下降趋势;超过180 d后,MKPC试件的硫酸根离子扩散系数逐步提高;浸泡360 d后,试件的硫酸根离子扩散系数为3.9×10^-7 mm²/s,离表面2 mm处的硫酸根离子含量为0.218%(质量分数)。MKPC试件的强度随着浸泡龄期的延长先增大后减小,其发展规律和扩散系数变化规律一致。浸泡360 d后,MKPC试件的抗折和抗压强度损失率均小于5%。

关键词: 磷酸钾镁水泥, 硫酸盐侵蚀, 浸泡龄期, 侵蚀深度, 扩散系数, 强度

Abstract: Through macro performance test, chemical analysis and microscopic analysis, this paper studied the diffusion of sulfate ions and strength development of magnesium potassium phosphate cement (MKPC) specimens immersed in a Na₂SO₄ solution with a mass fraction of 5%. The results show that with the extension of soaking age, the content of sulfate ions inside the specimens and the depth of erosion gradually increases. The relationship between the depth of erosion of sulfate ions in MKPC specimens and the sulfate ion content generally fits a second-order or third-order polynomial (with a correlation coefficient R² greater than 0.998). By solving the analytical expression using Fick's second law of diffusion with established boundary conditions, the diffusion coefficient of sulfate ions in MKPC specimens is in the range of 10^-7 mm²/s, which is one order of magnitude lower than that of Portland cement concrete. The diffusion coefficient of sulfate ions in MKPC specimens exhibits a decreasing trend for soaking age not exceeding 180 d. After more than 180 d, the diffusion coefficient of sulfate ions in MKPC specimens gradually increases. After 360 d of soaking, the diffusion coefficient of sulfate ions in MKPC specimen is 3.9×10^-7 mm²/s, and the sulfate ion content at 2 mm from the surface is 0.218% (mass fraction). The strength of MKPC specimens increases initially and then decreases as the soaking age extends, following a similar trend to that of the diffusion coefficient of sulfate ions. After 360 d of soaking, the loss rates of flexural and compressive strength of MKPC specimens are both less than 5%.

Key words: magnesium potassium phosphate cement, sulfate corrosion, soaking age, depth of erosion, diffusion coefficient, strength

中图分类号:

TU528

侯宇颖, 杨建明, 徐晓晖, 胡雪欣, 陈为亮, 胡夏闽, 蒋德权, 熊才强, 李涛. 溶液全浸泡的磷酸钾镁水泥浆体中的硫酸盐侵蚀行为研究[J]. 硅酸盐通报, 2025, 44(1): 31-39.

HOU Yuying, YANG Jianming, XU Xiaohui, HU Xuexin, CHEN Weiliang, HU Xiamin, JIANG Dequan, XIONG Caiqiang, LI Tao. Sulfate Corrosion Behavior in Solution Fully Soaked Magnesium Potassium Phosphate Cement Slurry[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2025, 44(1): 31-39.

参考文献

[1] 蒋金洋, 郑皓睿, 孙国文, 等. 硫酸盐侵蚀混凝土的数值模拟[J]. 建筑材料学报, 2023, 26(10): 1047-1053.
JIANG J Y, ZHENG H R, SUN G W, et al. Numerical simulation of sulfate attack in concrete[J]. Journal of Building Materials, 2023, 26(10): 1047-1053 (in Chinese).
[2] 张少辉, 王艳, 郭冰冰, 等. 温度场与硫酸盐侵蚀耦合作用混凝土孔结构分形特征演化规律[J]. 硅酸盐学报, 2024, 52(2): 474-484.
ZHANG S H, WANG Y, GUO B B, et al. Evolution of fractal characteristics of concrete pore structure under coupling effect of temperature field and sulphate attack[J]. Journal of the Chinese Ceramic Society, 2024, 52(2): 474-484 (in Chinese).
[3] WAGH A S. Chemically bonded phosphate ceramics: twenty-first century materials with diverse applications[M]. 2nd ed. Amsterdam: Elsevier, 2016.
[4] 肖炳斐, 陈玥, 房琦, 等. 磷酸镁水泥复合材料的研究进展[J]. 功能材料, 2020, 51(8): 8007-8013.
XIAO B F, CHEN Y, FANG Q, et al. Research progresses on magnesium phosphate cement-based composites: a review[J]. Journal of Functional Materials, 2020, 51(8): 8007-8013 (in Chinese).
[5] 秦继辉, 钱觉时, 宋庆, 等. 磷酸镁水泥的研究进展与应用[J]. 硅酸盐学报, 2022, 50(6): 1592-1606.
QIN J H, QIAN J S, SONG Q, et al. Research progress on magnesium phosphate cement[J]. Journal of the Chinese Ceramic Society, 2022, 50(6): 1592-1606 (in Chinese).
[6] QIN J H, QIAN J S, YOU C, et al. Bond behavior and interfacial micro-characteristics of magnesium phosphate cement onto old concrete substrate[J]. Construction and Building Materials, 2018, 167: 166-176.
[7] FENG H, SHEIKH M N, HADI M N S, et al. Interface bond performance of steel fibre embedded in magnesium phosphate cementitious composite[J]. Construction and Building Materials, 2018, 185: 648-660.
[8] 董英豪, 周杰, 杨海艳, 等. 碳钢表面磷酸镁涂层制备与防腐性能研究[J]. 腐蚀科学与防护技术, 2017, 29(5): 515-520.
DONG Y H, ZHOU J, YANG H Y, et al. Anti-corrosion performance of magnesium phosphate coating on carbon steel[J]. Corrosion Science and Protection Technology, 2017, 29(5): 515-520 (in Chinese).
[9] DING Z, LI Y Y, XU M R, et al. Electrochemical properties of aluminum tripolyphosphate modified chemically bonded phosphate ceramic anticorrosion coating[J]. Construction and Building Materials, 2020, 251: 118874.
[10] CHONG L L, YANG J M, XU Z Z, et al. Freezing and thawing resistance of MKPC paste under different corrosion solutions[J]. Construction and Building Materials, 2019, 212: 663-674.
[11] 韩超, 杨建明, 单春明, 等. 不同溶液长期浸泡下大流动性磷酸钾镁水泥基防腐涂层的性能[J]. 硅酸盐通报, 2021, 40(1): 48-54.
HAN C, YANG J M, SHAN C M, et al. Performance of magnesium potassium phosphate cement-based anticorrosive coating with high fluidity under long-term soaking in different solutions[J]. Bulletin of the Chinese Ceramic Society, 2021, 40(1): 48-54 (in Chinese).
[12] LI Y, SHI T F, LI J Q. Effects of fly ash and quartz sand on water-resistance and salt-resistance of magnesium phosphate cement[J]. Construction and Building Materials, 2016, 105: 384-390.
[13] SHI J, ZHAO J G, CHEN H, et al. Sulfuric acid-resistance performances of magnesium phosphate cements: macro-properties, mineralogy and microstructure evolutions[J]. Cement and Concrete Research, 2022, 157: 106830.
[14] ZOU D J, QIN S S, LIU T J, et al. Experimental and numerical study of the effects of solution concentration and temperature on concrete under external sulfate attack[J]. Cement and Concrete Research, 2021, 139: 106284.
[15] ASTM International. Standard test method for length change of hydraulic-cement mortars exposed to a sulfate solution: ASTM C1012—04[S]. Pennsylvania, United States: ASTM International, 2010.
[16] 国家市场监督管理总局,国家标准化管理委员会. 水泥抗硫酸盐侵蚀试验方法: GB/T 749—2008[S]. 北京: 中国标准出版社, 2008.
State Administration for Market Regulation, National Standardization Administration. Test method for determing capability of resisting sulfate corrode of cement: GB/T 749—2008[S]. Beijing: Standards Press of China, 2008 (in Chinese).
[17] 冷发光, 马孝轩, 田冠飞. 混凝土抗硫酸盐侵蚀试验方法[J]. 东南大学学报(自然科学版), 2006, 36(增刊2): 45-48.
LENG F G, MA X X, TIAN G F. Test method for sulfate attack resistance of concrete[J]. Journal of Southeast University (Natural Science Edition), 2006, 36(supplement 2): 45-48 (in Chinese).
[18] ASTM International. Standard test method for potential expansion of Portland-cement mortars exposed to sulfate: ASTM C452—21[S]. Pennsylvania, United States: ASTM International, 2010.
[19] 国家市场监督管理总局,国家标准化管理委员会. 水泥胶砂强度检验方法(ISO法): GB/T 17671—2021[S]. 北京: 中国标准出版社, 2021.
State Administration for Market Regulation, National Standardization Administration. Test method of cement mortar strength( ISO method ): GB/T 17671—2021[S]. Beijing: Standards Press of China, 2021 (in Chinese).
[20] 国家市场监督管理总局,国家标准化管理委员会. 生活饮用水标准检验方法第5部分:无机非金属指标: GB/T 5750.5—2023[S]. 北京: 中国标准出版社, 2023.
State Administration for Market Regulation, National Standardization Administration. Standard examination methods for drinking water—Part 5: Inorganic nonmetallic indices: GB/T 5750.5—2023[S]. Beijing: Standards Press of China, 2023 (in Chinese).
[21] HOU Y Y, LI L, LI T, et al. Water-immersion stability of self-compacting potassium magnesium phosphate cement paste[J]. Materials, 2023, 16(6): 2183.
[22] TUMIDAJSKI P J, CHAN G W, PHILIPOSE K E. An effective diffusivity for sulfate transport into concrete[J]. Cement and Concrete Research, 1995, 25(6): 1159-1163.
[23] 殷光吉. 硫酸盐环境下混凝土化学-力学损伤演变及数值模拟[D]. 南京: 南京理工大学, 2019.
YIN G J. Numerical simulation on chemo-mechanical damage evolution of concrete exposed to sulfate environment[D]. Nanjing: Nanjing University of Science and Technology, 2019 (in Chinese).

溶液全浸泡的磷酸钾镁水泥浆体中的硫酸盐侵蚀行为研究

Sulfate Corrosion Behavior in Solution Fully Soaked Magnesium Potassium Phosphate Cement Slurry

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