Effects of sodium dihydrogen phosphate on properties of magnesium phosphate cement

Xiao, Rui; Lai, Zhenyu; Luo, Xuanzhang; Li, Zhi; Liu, Mengliang; Deng, Qiubai; Chen, Jiawei; Lu, Zhong‐Yuan; Lv, Shuzhen

doi:10.1016/j.jobe.2022.105216

Cited by 4 publications

(5 citation statements)

References 37 publications

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“…Therefore, when the Mg/P ratio gradually increased, the reaction rate of K + was not enough to form more K-struvite, and the PO 4 3− turn to form newberyite and brucite phase. This is verified by the heterogeneous nucleation mechanism for the K-struvite crystals [ 29 ]: after the hydration of MgO, Mg(H 2 O) 6 2+ attracts negatively charged PO 4 3− and finally positively charged K + or H + . There is competition between K + and H + .…”

Section: Resultsmentioning

confidence: 80%

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Effect of K+ Diffusion on Hydration of Magnesium Potassium Phosphate Cement with Different Mg/P Ratios: Experiments and Molecular Dynamics Simulation Calculations

Leng,

Fu,

et al. 2024

Materials

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Magnesium potassium phosphate cement (MKPC) is formed on the basis of acid–base reaction between dead burnt MgO and KH2PO4 in aqueous solution with K-struvite as the main cementitious phase. Due to the unique characteristics of these cements, they are suitable for special applications, especially the immobilization of radioactive metal cations and road repair projects at low temperature. However, there are few articles about the hydration mechanism of MKPC. In this study, the types, proportions and formation mechanism of MKPC crystalline phases under different magnesium to phosphorus (Mg/P) ratios were studied by means of AAS, ICP-OES, SEM, EDS and XRD refinement methods. Corresponding MD simulation works were used to explain the hydration mechanism. This study highlights the fact that crystalline phases distribution of MKPC could be adjusted and controlled by different Mg/P ratios for the design of the MKPC, and the key factor is the kinetic of K+.

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Section: Resultsmentioning

confidence: 80%

“…In recent years, practicability [ 13 , 14 , 15 , 16 ], new retarders [ 17 , 18 ], durability [ 19 , 20 ] and effects of new admixtures [ 18 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 ] were focuses of research on MKPC. However, the hydration mechanism of MKPC has always been one of the key issues.…”

Section: Introductionmentioning

confidence: 99%

Effect of K+ Diffusion on Hydration of Magnesium Potassium Phosphate Cement with Different Mg/P Ratios: Experiments and Molecular Dynamics Simulation Calculations

Leng,

Fu,

et al. 2024

Materials

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“…These changes result in "strained" chemical bonds, many of which are subsequently broken. It is due to these polymorphic transformations that the deco fluorination of phosphorite begins already at the stage of mechanical activation 22) . This statement is based on the results of investigating the surface of mechanically activated phosphorites using a Cam Scan MV2300D SEM scanning electron microscope.…”

Section: Resultsmentioning

confidence: 99%

Investigation of Production Wastes Upon Roasting Mechanically Activated Phosphorite and Utilisation of Fluorine Compounds

Nurtayeva,

Baisbay,

Issayeva

et al. 2024

Evergreen

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The purpose was to investigate the process of formation and characteristics of fluorine compounds in the production waste upon roasting mechanically activated phosphorite, as well as the development of effective methods and technologies for their utilisation. The present study employed the analytical method, the classification method, the functional method, the statistical method, the synthesis method, structure-functional method, method of deduction. During the study, the composition of waste products from the roasting of mechanically activated phosphorite was analysed. Proper treatment of fluoride compounds is critical to preserving the environment and ensuring general well-being. These substances are toxic and can harm ecosystems and human health. Fluoride compounds generated during firing can have a negative impact on biological systems, and therefore, the effective disposal of these substances is becoming an integral part of the industrial production of phosphate rock and mineral fertilizers. The waste was found to contain significant amounts of fluoride compounds, including gaseous and solid forms. This confirms the need to develop methods and technologies for their utilisation.

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“…For this purpose, the role of additives that could prolong the setting time and in turn increase the workability and moldability of cements has been investigated in the literature. The data summarized in Table 2 show that by far the most widely investigated retarder for MPCs is borax (Na 2 B 4 O 7 ·10H 2 O)/boric acid (H 3 BO 3 ), in both the biomedical [ 57 , 58 , 63 , 77 , 126 , 135 ] and (particularly) construction fields [ 59 , 62 , 64 , 65 , 66 , 67 , 68 , 70 , 71 , 72 , 73 , 74 , 75 , 76 , 77 , 80 , 82 , 83 , 84 , 85 , 86 , 87 , 89 , 90 , 91 , 92 , 101 , 102 , 104 , 107 , 112 , 113 , 116 , 119 , 120 , 124 , 128 , 129 , 130 , 131 , 136 ]. Borax was in fact traditionally used to delay the setting time of MgO-based MPCs, and its setting mechanism has been well investigated in the literature, from both an experimental and a theoretical perspective [ ...…”

Section: Modifications Of Mpcsmentioning

confidence: 99%

Section: Retardersmentioning

confidence: 99%

An Overview of Magnesium-Phosphate-Based Cements as Bone Repair Materials

Gelli,

Ridi

2023

JFB

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In the search for effective biomaterials for bone repair, magnesium phosphate cements (MPCs) are nowadays gaining importance as bone void fillers thanks to their many attractive features that overcome some of the limitations of the well-investigated calcium-phosphate-based cements. The goal of this review was to highlight the main properties and applications of MPCs in the orthopedic field, focusing on the different types of formulations that have been described in the literature, their main features, and the in vivo and in vitro response towards them. The presented results will be useful to showcase the potential of MPCs in the orthopedic field and will suggest novel strategies to further boost their clinical application.

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Effects of sodium dihydrogen phosphate on properties of magnesium phosphate cement

Cited by 4 publications

References 37 publications

Effect of K+ Diffusion on Hydration of Magnesium Potassium Phosphate Cement with Different Mg/P Ratios: Experiments and Molecular Dynamics Simulation Calculations

Effect of K+ Diffusion on Hydration of Magnesium Potassium Phosphate Cement with Different Mg/P Ratios: Experiments and Molecular Dynamics Simulation Calculations

Investigation of Production Wastes Upon Roasting Mechanically Activated Phosphorite and Utilisation of Fluorine Compounds

An Overview of Magnesium-Phosphate-Based Cements as Bone Repair Materials

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