Mg(OH)<sub>2</sub>对磷酸镁水泥水化过程及性能的影响

doi:10.11896/cldb.24010085

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Abstract The magnesium raw material for magnesium phosphate cement (MPC) is mainly dead-burned MgO. However, the high-temperature calcination required for producing dead-burned MgO results in high costs and excessive carbon emissions. magnesium hydroxide (Mg(OH)₂) is abundant, has low production costs, and is environmentally safe and pollution-free. Mg(OH)₂ is a rich source of low-cost, non-polluting, safe and environmentally friendly, which is of great significance to alleviate the problem of high cost of use and carbon emissions if it can be adopted in large quantities. Therefore, in this work, Mg(OH)₂ was used instead of partially dead-burned MgO, by means of tests such as X-ray diffraction, thermal analysis, scanning electron microscopy and energy spectrum analysis, the effects on workability, hydration process, strength development and microstructure were investigated. The results showed that the incorporation of Mg(OH)₂ accelerated the hydration process of MPC, the fluidity of the slurry was reduced and the setting time was shortened. In this paper, the working properties are improved by retardation means such as water glass heat treatment modification. The hydration temperature and pH of magnesium phosphate cement decreased significantly with the incorporation of Mg(OH)₂, increased number of K-struvite crystals in the later 28 d, compressive strength decreases with increasing Mg(OH)₂ content. When Mg(OH)₂ is doped within 50%, its late strength decreases in the range of 15%, with the increase of Mg(OH)₂ doping, more hydration products are formed by the reaction of Mg(OH)₂. When Mg(OH)₂ doping accounted for 66.6%, the reactivity of dead-burned MgO was reduced from an average value of 22% to 7%. In conclusion, the preparation of magnesium phosphate cement with large amount of Mg(OH)₂ is feasible and can ensure that the later mechanical properties of the material can meet the requirements of engineering applications. It has potential applications for reducing the cost of magnesium phosphate cement use and carbon emissions.

Key words： Mg(OH)₂ magnesium phosphate cement hydration process working performances

Published: 10 September 2024 Online: 2024-09-30

CLC number:

TU528.31

Fund:Science and Technology Plan of Sichuan Provincial (2020YJ0355).

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	Articles by authors
	CHEN Jiawei
	ZHANG Yunqiao
	CHEN Zhuofan
	LIU Zhi
	LI Jun
	LU Zhongyuan
	LAI Zhenyu

Cite this article:

CHEN Jiawei,ZHANG Yunqiao,CHEN Zhuofan, et al. Influence of Mg(OH)₂ on the Hydration Process and Properties of Magnesium Phosphate Cement[J]. Materials Reports, 2024, 38(17): 24010085-7.

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http://www.mater-rep.com/EN/10.11896/cldb.24010085 OR http://www.mater-rep.com/EN/Y2024/V38/I17/24010085

1 Feng L, Chen X Q, Wen X D, et al. Construction and Building Materials, 2019, 204, 550.
2 Park J W, Kim K H, Ann K Y. Advances in Materials Science and Engineering, 2016, 2016, 1.
3 Deng H W, Yang Y Z, Gao X J. Advanced Materials Research, 2011, 250-253, 1752.
4 Yang Y Q, Zhang B. Low Temperature Architecture Technology, 2022, 44(4), 12 (in Chinese)
杨元全, 张冰. 低温建筑技术, 2022, 44(4), 12.
5 Qin J H, Qian J S, Song Q, et al. Journal of the Chinese Ceramic Society, 2022, 50(6), 1592(in Chinese).
秦继辉, 钱觉时, 宋庆, 等. 硅酸盐学报, 2022, 50(6), 1592.
6 Wu X N. Jiangxi Building Materials, 2022(9), 249(in Chinese).
吴晓宁. 江西建材, 2022(9), 249.
7 Liu J X, Yan Y M, Hai R, et al. Advances in Science and Technology of Water Resources, 2023, 43(3), 94(in Chinese).
刘俊霞, 燕依梦, 海然, 等. 水利水电科技进展, 2023, 43(3), 94.
8 Liu J, Guo R H, Zhang Z Q. Materials Reports, 2021, 35(23), 23068(in Chinese).
刘进, 呙润华, 张增起. 材料导报, 2021, 35(23), 23068.
9 Du J G, Wang X F, Chen B, et al. Construction Technology, 2022, 51(15), 6(in Chinese).
杜杰贵, 王雄锋, 陈波, 等. 施工技术(中英文), 2022, 51(15), 6
10 Su C L. Engineering Construction, 2020, 52(4), 70(in Chinese).
苏春雷. 工程建设, 2020, 52(4), 70.
11 Yang N, Shi C, Yang J, et al. Journal of Materials in Civil Engineering, 2014, 26(10), 04014071.
12 Shen W, Cao L, Li Q, et al. Renewable and Sustainable Energy Reviews, 2015, 50, 1004.
13 Shen W, Cao L, Li Q, et al. Journal of Cleaner Production, 2016, 131, 20.
14 Mestres G, Ginebra M P. Acta Biomaterialia, 2011, 7(4), 1853.
15 Li J, Zhang W, Cao Y. Construction and Building Materials, 2014, 58, 122.
16 Formosa J, Lacasta A M, Navarro A, et al. Construction and Building Materials, 2015, 91, 150.
17 Haque M A, Chen B. Construction and Building Materials, 2019, 211, 885.
18 Jin F, Al-Tabbaa A. Cement and Concrete Composites, 2014, 52, 27.
19 Ma H, Xu B, Li Z. Cement and Concrete Research, 2014, 65, 96.
20 Xiao R, Lai Z, Luo X, et al. Journal of Building Engineering, 2022, 60, 105216.
21 Qiao F, Chau C K, Li Z. Construction and Building Materials, 2010, 24(5), 695.
22 Fan S, Chen B. Construction and Building Materials, 2014, 65, 480.
23 Liu Z, Lai Z, Luo X, et al. Construction and Building Materials, 2023, 393, 132057.
24 Jiang Y, Ahmad M R, Chen B. Construction and Building Materials, 2019, 195, 140.
25 Xu B, Lothenbach B, Winnefeld F. Cement and Concrete Research, 2020, 131, 106012.
26 Xu X, Lin X, Pan X, et al. Construction and Building Materials, 2020, 235, 117544.
27 Feng H, Nie S, Guo A, et al. Construction and Building Materials, 2022, 341, 127843.
28 Walling S A, Provis J L. Chemical Reviews, 2016, 116(7), 4170.
29 Feng H, Liang J, Pang Y, et al. Construction and Building Materials, 2022, 333, 127395.
30 Zhao S X, Yan H, Li Y T, et al. Bulletin of the Chinese Ceramic Society, 2017, 36(10), 3303(in Chinese).
赵思勰, 晏华, 李云涛, 等. 硅酸盐通报, 2017, 36(10), 3303.
31 Tan Y, Yu H, Li Y, et al. Construction and Building Materials, 2016, 126, 313.
32 Lu K, Wang B, Han Z, et al. Journal of Building Engineering, 2022, 51, 104137.
33 Lu X, Chen B. Construction and Building Materials, 2016, 123, 719.
34 Vance K, Kumar A, Sant G, et al. Cement and Concrete Research, 2013, 52, 196.
35 Al Menhosh A, Wang Y, Wang Y. Journal of Engineering, 2016, 2016, 1.
36 Liu Z, Lai Z, Luo X, et al. Construction and Building Materials, 2022, 343, 128132.
37 Wang H T, Zhang S H, Ding J H, et al. Journal of Functional Materials, 2016, 47(6), 6158(in Chinese).
汪宏涛, 张时豪, 丁建华, 等. 功能材料, 2016, 47(6), 6158.
38 Ding J H, Wang H T, Zhang S H, et al. New Building Materials, 2016, 43(4), 32(in Chinese).
丁建华, 汪宏涛, 张时豪, 等. 新型建筑材料, 2016, 43(4), 32.
39 Ding J H, Wang H T, Zhang S H, et al. Journal of Logistical Engineering University, 2016, 32(1), 74(in Chinese).
丁建华, 汪宏涛, 张时豪, 等. 后勤工程学院学报, 2016, 32(1), 74.
40 Pang B, Liu J, Wang B, et al. Construction and Building Materials, 2021, 275, 121741.
41 Meng X, Jiang Y, Chen B, et al. Construction and Building Materials, 2023, 408, 133612.
42 Guo R X. Sulphur Phosphorus & Bulk Materials Handling Related Engineering, 2013(2), 14(in Chinese).
郭如新. 硫磷设计与粉体工程, 2013(2), 14.
43 Guo R X. Journal of Salt Science and Chemical Industry, 2009, 38(4), 49(in Chinese).
郭如新. 盐业与化工, 2009, 38(4), 49.
44 Yang Z H, Wang C L. Concrete, 2022(10), 188(in Chinese).
杨圳华, 王超林. 混凝土, 2022(10), 188.
45 Zhang H, Wang H, Wang H. IOP Conference Series:Earth and Environmental Science, 2018, 170, 032028.
46 Liu H, Wu H, Song Q, et al. Journal of Thermal Analysis and Calorimetry, 2019, 141(4), 1341.
47 Zhang T, Li T, Zhou Z, et al. Composites Part B:Engineering, 2020, 198, 108203.
48 Guan Y, Chang J, Hu Z, et al. Construction and Building Materials, 2022, 348, 128669.
49 Du Z, Unluer C. Cement and Concrete Research, 2024, 177, 107418.
50 Chen M M, Sun Y Z, Song X F, et al. Journal of East China University of Science and Technology, 2022, 48(5), 600(in Chinese).
陈闵敏, 孙玉柱, 宋兴福, 等. 华东理工大学学报(自然科学版), 2022, 48(5), 600.
51 Liu M, Lai Z, Deng Q, et al. Construction and Building Materials, 2022, 316, 125880.
52 Shi C, Yang J, Yang N, et al. Cement and Concrete Composites, 2014, 53, 83.
53 Feng H, Zhao X, Chen G, et al. Materials, 2019, 12(22), 3755.
54 Lai Z, Lai X, Shi J, et al. Construction and Building Materials, 2016, 129, 70.
55 He X, Lai Z, Yan T, et al. Construction and Building Materials, 2019, 225, 234.