烧结氧化镁粉的晶体特征对磷酸镁水泥力学性能的影响

doi:10.11896/cldb.20120126

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Abstract To study the relativity between mechanical properties of magnesium phosphate cement (MPC) and the crystal characteristics of MgO in calcined magnesia powder, the MPC was prepared using calcined magnesia powder produced by different calcination conditions. The effect of content and crystalline size of MgO in calcined magnesia powder on the setting time and compressive strength of MPC was analyzed. Moreover, the variations of phase composition,microstructure and pore structure of MPC prepared using different calcined magnesia powder at the same hydration time were characterized by X-ray diffraction (XRD), thermo gravimetric-differential scanning calorimetry(TG-DSC), scanning electron microscope (SEM) and mercury intrusion porosimetry (MIP). The results show that the setting time and the compressive strength of MPC were increased with the average crystallite size of MgO. The MPC prepared by calcined magnesia powder with MgO content of 92.83% and average crystallite size of 129.45 nm has the longest setting time and the highest compressive strength. And its initial setting time is 22 min, 1 d and 28 d compressive strength can reach to 35.8 MPa and 77.6 MPa, respectively. In addition, the average crystalline size of MgO has a greater effect on the mechanical properties of MPC than MgO content.

Key words： magnesium phosphate cement calcined magnesia powder crystalline size compressive strength phase composition

Published: 10 October 2022 Online: 2022-10-12

CLC number:

TQ172

Fund:National Key R & D Program of China(2020YFC1909304) and the National Natural Science Foundation of China(51778101)

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	Articles by authors
	SUN Henan
	GUAN Yan
	BI Wanli
	SUN Meishuo

Cite this article:

SUN Henan,GUAN Yan,BI Wanli, et al. Effect of Crystal Characteristics of Calcined Magnesia Powder on Mechanical Properties of Magnesium Phosphate Cement[J]. Materials Reports, 2022, 36(19): 20120126-6.

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http://www.mater-rep.com/EN/10.11896/cldb.20120126 OR http://www.mater-rep.com/EN/Y2022/V36/I19/20120126

1 Qiao F, Chau C K, Li Z J. Construction and Building Materials, 2009, 24(5), 695.
2 Yang Q B, Wu X L. Cement and Concrete Research, 1999, 29(3), 389.
3 Yang Q B, Zhang S Q, Wu X L. Cement and Concrete Research, 2002, 32(1), 165.
4 Costato M. IL Nuovo Cimento D, 2006, 17(5), 545.
5 Coppola L, Coffetti D, Crotti E. Construction and Building Materials, 2018, 173, 111.
6 Haque M A, Chen B. Construction and Building Materials, 2019, 211, 885.
7 Cai G C, Zhao J. KSCE Journal of Civil Engineering, 2016, 20(7), 2832.
8 Aggarwal L K, Thapliyal P C, Karade S R. Construction and Building Materials, 2005, 21(2), 379.
9 Jia X W, Li J M, Wang P, et al. Construction and Building Materials, 2019, 229, 116927.
10 Lai Z Y, Qian J S, Lu Z Y, et al. Journal of Wuhan University of Technology, 2011, 33(10), 16 (in Chinese).
赖振宇, 钱觉时, 卢忠远, 等. 武汉理工大学学报, 2011, 33(10), 16.
11 Yang J M, Qian C X, Zhang Q H, et al. Journal of Southeast University (Natural Science Edition), 2010, 40(2), 373 (in Chinese).
杨建明, 钱春香, 张青行, 等. 东南大学学报(自然科学版), 2010, 40(2), 373.
12 Chang Y, Shi C J, Yang N, et al. Journal of the Chinese Ceramic Society, 2013, 41(4), 492 (in Chinese).
常远, 史才军, 杨楠, 等. 硅酸盐学报, 2013, 41(4), 492.
13 Tan Y S, Yu H F, Li Y, et al.Journal of the Chinese Ceramic Society, 2014, 42(11), 1362 (in Chinese).
谭永山, 余红发, 李颖, 等.硅酸盐学报, 2014, 42(11), 1362.
14 Ren Q, Jiang Z W, Ma J W. Journal of Building Materials, 2016, 19(6), 1062 (in Chinese).
任强, 蒋正武, 马敬畏. 建筑材料学报, 2016, 19(6), 1062.
15 Muhammad R A, Chen B. Construction and Building Materials, 2018, 190, 466.
16 Zheng D D, Ji T, Wang C Q, et al. Construction and Building Materials, 2016, 106, 415.
17 Chen B, Yang X Y, Liu N. Advanced Materials Research, 2012, 1616(450-451), 796.
18 Hong L T, Lubell A S. ACI Materials Journal, 2015, 112(4), 587.
19 Gao M, Liu N, Chen B.Journal of Building Materials, 2020, 23(1), 29 (in Chinese).
高明, 刘宁, 陈兵. 建筑材料学报, 2020, 23(1), 29.
20 Sun M S, Guan Y, Bi W L,et al. New Building Materials, 2018, 45(11), 56 (in Chinese).
孙美硕, 关岩, 毕万利, 等. 新型建筑材料, 2018, 45(11), 56.
21 Li Y, Dong J M, Xiao X Y, et al. Journal of Salt Lake Research, 2020, 28(2), 15 (in Chinese).
李颖, 董金美, 肖学英, 等. 盐湖研究, 2020, 28(2), 15.
22 Guo J L, Shen Y N. Journal of Inner Mongolia Normal University (Natural Science Edition), 2009, 38(3), 357 (in Chinese).
郭金玲, 沈岳年. 内蒙古师范大学学报(自然科学汉文版), 2009, 38(3), 357.
23 Zhao J Y, Xu J H, Cui C Y, et al. Construction and Building Materials, 2020, 258, 119683.
24 Li Y, Li Z J, Pei H F, et al. Construction and Building Materials, 2016, 102, 233.