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Effect of magnesium hydroxide on the properties of fireproof …

Magnesium phosphate cement, renowned for its exceptional fire resistance, has been a key area of research in fireproof coatings for steel structures. ... MH is a white powder sourced from Henan Zhengzhou Fengyue Chemical Co., Ltd. in P. R. China, with a median particle size of 9.44 μm. Dead-burned MgO is produced by calcinating magnesite ...

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New magnesium cement optimized in MgO-K2HPO4-SiO2 …

Magnesium phosphate cement (MPC), also known as chemically bonded ceramics [1], has gotten widely attention.MPC exhibits many excellent performances, such as rapid strength enhancement [2], higher fluidity [3], excellent volume stability [4] and strong bonding capacity with old substances [5].MPC is composed of 70–85 % MgO, 10–25 % acidic phosphates and small …

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Research progresses on magnesium phosphate cement: A review

The prime goal of this review is to expose the recent progresses on the research field of magnesium phosphate cement (MPC) based cementitious material to light through gathering the crucial outcomes of the works done by the global researchers. ... This research work was financially supported by the National Natural Science Foundation of China ...

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Early properties of magnesium phosphate cement repairing …

Magnesium phosphate cement (MPC) is a high-performance repairing material suitable for the interfacial disease of slab track. In this study, the early properties of MPC were optimized using central composite design (CCD) approach based on response surface methodology (RSM). ... China's high-speed railway has developed rapidly, exceeding 45,000 ...

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A systematic review of engineering properties of magnesium …

Magnesium phosphate cement (MPC) is known to have the potential to be an attractive repair material in practice, and has recently evolved as a fast-moving research area for this and other applications. ... Secondly, MgO reserves are limited (most MgO comes from Russia and China), and deposits are distributed heterogeneously (e.g., not many ...

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Effect of silt modification on the properties of magnesium phosphate cement

Introduction. Magnesium phosphate cement (MPC) is composed of magnesium oxide, phosphate, retarding agent, and mineral admixture in specific proportions (Qiao et al., 2010; Haque and Chen, 2019).After adding water, the raw materials will undergo an acid-base reaction and hydration reaction, and then harden by physical action of coagulation (Sugama and Kukacka, 1983; Liu …

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Workability, mechanical properties, pore characteristics and

Magnesium phosphate cement (MPC) as a new type of inorganic cementitious material has received wide attention in recent years. However, MPC has the disadvantages of expensive price and brittleness, and the existing research mainly focuses on the preparation and material properties of MPC and mortar, with fewer studies on its concrete material properties …

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Magnesium Phosphate Cement: Characteristics and Advantages

Magnesium phosphate cement (MPC) hardens rapidly and gains high strength in a short time, ranging about several hours to the level of normal strength of ordinary Portland cement concrete. The magnesium phosphate cement binder is produced from the reaction between magnesium oxide and phosphate in water at room temperature. The magnesium ...

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Magnesium-Based Composite Calcium Phosphate Cement …

Calcium phosphate cement (CPC) is an injectable bone cement with excellent biocompatibility, widely used for filling bone defects of various shapes. However, its slow degradation, insufficient mechanical strength, and poor osteoinductivity limit its further clinical applications. In this study, we d …

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Optimization of magnesium phosphate cement prepared by …

Optimization of magnesium phosphate cement prepared by natural brucite using ultrafine metakaolin and metakaolin. Author links open overlay panel Shiru Long, Yue Li, Nan Wang, Hui Lin, Zigeng Wang. ... including prominent locations such as China, the United States, and Russia. It is a lamellar mineral with the highest magnesium content ...

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Magnesium malate-modified calcium phosphate bone cement …

Active artificial bone substitutes are crucial in bone repair and reconstruction. Calcium phosphate bone cement (CPC) is known for its biocompatibility, degradability, and ability to fill various shaped bone defects. However, its low osteoinductive capacity limits bone regeneration applications. Effectively integrating osteoinductive magnesium ions with CPC …

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Mechanical and microscopic properties of low alkali …

The use of recycled coarse aggregates (RCAs) in concrete often results in a decrease in mechanical properties due to the poor bonding performance between new and old interfaces. This study impregnated RCA with low-alkali sulfoaluminate (LASAC) and magnesium phosphate cement (MPC) to improve the mechanical properties of RCA, and the axial …

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Sulfuric acid-resistance performances of magnesium phosphate …

Effects of sulfuric acidity (pH = 2–7) on the properties of magnesium ammonium phosphate cement (MAPC) and magnesium potassium phosphate cement (MKPC) were investigated. ... d 90: 27.85 μm) was purchased from Haicheng city, Liaoning Province, China, and its chemical compositions analyzed by X-ray fluorescence (XRF) were shown in Table 1. …

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Significance of low-temperature calcination in magnesite …

Following GB/T 1346–2011 of China, "Test methods for water requirement of normal consistency, setting time and soundness of the Portland cement" [45], the setting time of magnesium phosphate cement (MPC) was evaluated using a Vickers meter (QX-42, Qinxing Science and Technology Company, China). Given that the initial setting time of MPC is ...

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Progresses of green magnesium phosphate cement: Production, …

The apparent changes in surfaces of magnesium ammonium phosphate cement (MAPC) and magnesium potassium phosphate cement (MKPC) mortars cured in different conditions at 28 …

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Feasibility analysis of magnesium phosphate cement as a repair …

In this study, the ablation and mechanical properties of magnesium phosphate cement (MPC) were enhanced by adding ZrB2. The effects of ZrB2 on the microstructure, …

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Preparation of Porous Materials by Magnesium Phosphate Cement …

High permeability and strength magnesium phosphate cement (MPC) with porosity, average pore size, and compressive strength varied from 63.2% to 74%, 138.7 μm to 284.7 μm and 2.3 MPa to 4.7 MPa, respectively, were successfully prepared by combining the physical ing method and chemically entrained gas method at room temperature.The effects of …

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A New Magnesium Phosphate Cement Based on Renewable …

Magnesium phosphate cement (MPC), a new type of inorganic cementitious material, is favored in engineering and construction because of its fast setting speed and high bonding strength, but is limited in practical application due to its high production cost and excessive release of hydration heat. ... Henan Province, China, with a specific ...

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Construction of macroporous magnesium phosphate-based bone cement …

Construction of macroporous magnesium phosphate-based bone cement with sustained drug release. Author links open overlay panel Yanan Zhao a, Suchun Yu a, Xiaopei Wu a, Honglian Dai a b, Wenbin Liu c, Rong Tu a, Takashi Goto a d. ... China), the surface morphology of the composites was analysed by scanning electron microscopy (SEM; S ...

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Feasibility analysis of magnesium phosphate cement as a repair …

Excellent properties of magnesium phosphate play a key role in the repair process. This study proposed using magnesium phosphate cement (MPC) to repair the base slab of the …

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A biodegradable magnesium phosphate cement incorporating …

Magnesium phosphate cement (MPC), as a artificial bone substitutes, has been a potential biomaterial for repairing bone defects, but its clinical application is limited by insufficient mechanical strength and poor osteoinductive activity. ... This research was financially supported by National Natural Science Foundation of China (No. 52171236 ...

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Research progress on the properties and applications of …

Magnesium phosphate cement (MPC) is a new cementing material with great development potential and excellent properties. In addition to traditional cement, MPC also has the characteristics of ...

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Effect of Vehicle–Bridge Coupled Vibration on the Performance of

2.1. Materials. The MPC used in this work was obtained from Guizhou Magnesium Phosphate Material Co., Ltd., Guiyang, China. It was prepared from a mixture of dead burnt magnesium (MgO), ammonium dihydrogen phosphate (NH 4 H 2 PO 4) and fly ash (FA) in a certain proportion.The chemical composition of the MPC determined through XRF analysis is …

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Multi-scale analysis of degradation mechanisms in magnesium phosphate

Multi-scale analysis of degradation mechanisms in magnesium phosphate cement paste under wet-dry cycling. Author links open overlay panel Zihan Zhou a b, Haisen Jin a, Qinyuan Liang ... This research was funded by the National Natural Science Foundation of China (No. 52308316) and was supported by Key Laboratory of Rock Mechanics and Geohazards ...

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Behavior of magnesium phosphate cement with addition of …

Magnesium phosphate cement (MPC) as repair materials of the structures or package materials for wastes may be exposed to elevated temperatures during fire attack. ... China). The chemical compositions of the dead burned MgO and CSA were determined by X-ray fluorescence analysis and presented in Table 1. The particle size distributions of dead ...

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Research Progress of Magnesium Phosphate Cement Repair …

Magnesium phosphate cement (MPC) is produced by the hydration reaction of magnesium oxide and phosphate, which is a new type of cementitious material combined by …

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Ground granulated blast furnace slag-modified magnesium phosphate

Ground granulated blast furnace slag-modified magnesium phosphate cement used as grouting material: Workability, mechanical property and corrosion resistance optimization ... Ltd, China, having a medium diameter of 16.51 μm and a specific surface area of 461.6 m 2 /kg, with a purity of 90.71 %. The fly ash was sourced from Kunshan Jinguli ...

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Experimental and simulation study of magnesium phosphate cement …

The results show that the mixed slurry with a magnesium phosphate ratio of 1/3, a magnesium–boron ratio between 5% and 10%, and a water–cement ratio of 0.2–0.5 has better stability and mobility.

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Is It Possible to Make Magnesia-Based Cement …

Moreover, the compressive strength of magnesium phosphate cement after curing 3 h was 36 MPa, which was higher than that (e.g., 20–30 MPa after curing 24 h ) of OPC ... In the conventional magnesium industry in …

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Effect of Modified Magnesium Oxide on the Properties of Magnesium

1. Introduction. Magnesium phosphate cement (MPC) is widely used as the rapid repair material for airport runways, bridges, piers, highways, and other infrastructures because of its fast hardening, early strength, high bonding strength, and wide adaptability to many environments, which significantly shortens repair times [1,2,3,4].Control of the setting time and fluidity is …

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