Effect of phosphoric acid on the properties of magnesium oxychloride cement as a biomaterial

2014 ◽  
Vol 56 ◽  
pp. 69-74 ◽  
Author(s):  
Yanni Tan ◽  
Yong Liu ◽  
Liam Grover
2013 ◽  
Vol 662 ◽  
pp. 402-405
Author(s):  
Yu Jie Jin ◽  
Li Guang Xiao ◽  
Feng Luo

The influence of phosphoric acid and iron vitriol on the properties of magnesium oxychloride cement is studied in this paper. The experiment indicated that phosphoric acid and iron vitriol can improve the water-repellency of magnesium oxychloride cement. The softening coefficient is about 1.014 when the dosage of phosphoric acid is 1% and the softening coefficient is about 0.77 when the dosage of iron vitriol is 4%.


2013 ◽  
Vol 423-426 ◽  
pp. 1027-1030 ◽  
Author(s):  
Zi Yao Yuan ◽  
Xing Long Liu ◽  
Yong Feng Jia ◽  
Peng Liu ◽  
Ming Chun Li

The influences of fly ash and phosphoric acid on water-resistant property and the microstructure of magnesium oxychloride cement (MOC) were investigated in this paper. It is found that the improvement of the water-resistance of the MOC incorporated with phosphoric acid can be attributed to the dramatic decrease in the quantity of crystallization points. In addition, the new Mg2PO4(OH) phase can also prevent the dissolution of 5-phase. And the mechanism of the water-resistance of the MOC mixed with fly ash is due to the Ca2MgSi2O7 phase and the glass phase which are filled into microscopic cracks and skeleton empty.


Materials ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 484
Author(s):  
Michal Lojka ◽  
Anna-Marie Lauermannová ◽  
David Sedmidubský ◽  
Milena Pavlíková ◽  
Martina Záleská ◽  
...  

In this contribution, composite materials based on magnesium oxychloride cement (MOC) with multi-walled carbon nanotubes (MWCNTs) used as an additive were prepared and characterized. The prepared composites contained 0.5 and 1 wt.% of MWCNTs, and these samples were compared with the pure MOC Phase 5 reference. The composites were characterized using a broad spectrum of analytical methods to determine the phase and chemical composition, morphology, and thermal behavior. In addition, the basic structural parameters, pore size distribution, mechanical strength, stiffness, and hygrothermal performance of the composites, aged 14 days, were also the subject of investigation. The MWCNT-doped composites showed high compactness, increased mechanical resistance, stiffness, and water resistance, which is crucial for their application in the construction industry and their future use in the design and development of alternative building products.


2019 ◽  
Vol 8 (1) ◽  
pp. 94-104 ◽  
Author(s):  
Wei Gong ◽  
Hongfa Yu ◽  
Haiyan Ma ◽  
Hongxia Qiao ◽  
Guangfeng Chen

2015 ◽  
Vol 49 (4) ◽  
pp. 1319-1326 ◽  
Author(s):  
Biwan Xu ◽  
Hongyan Ma ◽  
Chuanlin Hu ◽  
Zongjin Li

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