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A semi-dynamic leaching test was used to simulate the erosion effect of acid rain on magnesium phosphate cement (MPC)-stabilized/solidified zinc-contaminated soil. The leaching...
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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 …
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Magnesium phosphate cement (MPC) is a new type of binder in which the chemical bonding is formed by a through-solution acid-based reaction between dead burned magnesia …
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This paper reviews the crack resistance of magnesium phosphate cement-based materials from the aspects of bend-compression ratio, modulus of elasticity, bending resistance and drying shrinkage. ... China West Construction Academy of Building Materials, Chengdu, …
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The rapid repair of airport runways and concrete pavements using magnesium phosphate cement mortar (MPCM) in frigid environments requires the MPCM to have high bond strength with ordinary Portland cement (OPC).
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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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AbstractThis paper reviews recent studies on preparation, hydration, and properties of magnesium phosphate cement (MPC). MPC is the phosphate-bonded inorganic material derived from reactions between phosphate and magnesium oxide. The hydration reaction in ...
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They are compared with concrete specimens strengthened with epoxy-based FRP and unconfined concrete specimens. The test results show that compared with the unconfined concrete specimen, the strength of the CFRiP-strengthened specimens based on magnesium phosphate increases by 1.69-2.50 times, and their ultimate strain is enlarged by 1.83-3.50 ...
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Generally classified as magnesium-based cement, this material was used in historic times, dating back to ancient times in Europe, India, and China, among other countries. The Great Wall of China and many of the stupas in India, still standing today, were all …
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Magnesium phosphate cement (MPC) ... (MgO; purity 98.5%, calcinated at 1600 °C for 4 h) at a molar ratio of 1:1.5 (Sinopharm Chemical Reagents, Shanghai, China). The composites were ground in a ball mill (F-P400, Focucy, Changsha City, China) and sieved through a 200 mesh to obtain particles ~75 μm in diameter. CMC (MW: 50 kDa; carboxylation ...
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a negative temperature for magnesium phosphate cement, Jia [22] tested several types of ... China Yancheng Huanai Magnesium Industry Co. It is made of magnesite calcined at 1600
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In the past twenty years, Magnesium potassium phosphate cement (MKPC) has been mainly used in construction materials and waste stabilization and solidification [1], [2], [3].MKPC is a representative of chemically bonded ceramic materials, exhibiting exceptional characteristics due to its unique composition and bonding mechanisms [4], [5], [6].It is capable of fulfilling the …
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Magnesium phosphate cement (MPC) is a water-hardening inorganic cementitious material [1–3]. ... China. The ferroaluminate cement was provided by Hangzhou Yuewei building materials Co., Ltd., Hangzhou, China. The chemical compositions (by mass) of the ferroaluminate cement were determined by X-ray fluorescence
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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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4 School of Pharmacy, Jiamusi University, Jiamusi 154007, China. 5 School of Public Health, Jiamusi University, Jiamusi 154007, China. 6 School of Material Science ... we fabricated bioactive magnesium phosphate bone cement (BMPC) at room temperature; then, it was set at to °C and humidity for 2 h. The process was as follows ...
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Magnesium phosphate cement (MPC) shows many special properties, such as rapid hardening [14,15], ... which accords with GB/T 700 and is widely used in engineering in China, was adopted. A commercial inorganic coating was used for comparison. Ordinary Portland cement (OPC) was selected to be another binder compared with MPC.
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Modification of magnesium phosphate cement with steel slag powder and ground blast furnace slag: Mechanism of hydration and electrical conductivity. ... Steel slag in China: treatment, recycling, and management. Waste Manag., 78 (2018), pp. 318-330, 10.1016/j.wasman.2018.04.045. View PDF View article View in Scopus Google Scholar
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Ye'elimite mineral in sulphoaluminate cement (CSA) has been proven to take part in the hydration of MPC and form some amorphous phases. The introduction of CSA in MPC …
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2.1 Materials Used. Reburned magnesium oxide, MgO, Yancheng Huanai Magnesium Industry Co., Ltd. Has an industrial purity of 95%. Potassium dihydrogen phosphate, KH 2 PO 4, abbreviated as KDP, is an analytical reagent with a concentration of over 99.0%, purchased from the market.Borax, produced by Chengdu Kelong Chemical Plant, Na 2 B 4 O …
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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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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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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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This study proposed using magnesium phosphate cement (MPC) to repair the base slab of the Chinese ballastless railway track. Laminated members were subjected to static and fatigue bending tests.
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Magnesium phosphate cement matrix is generally manufactured by combining the magnesium oxide and potassium dihydrogen phosphate [13,14]. This kind of cement ... China is used for making the magnesium phosphate cement (MPC). The purity and density of potassium dihydrogen phosphate are 98.5% and 2.238 g/cm3, respectively. Another power material ...
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2 Key Laboratory for Ultrafine Materials of Ministry of Education, East China University of Science and Technology, Shanghai, ... Magnesium-calcium phosphate cement (MCPC) has been reported as a promising candidate for bone repair with promoted osteogenesis both in vitro and in vivo. However, relatively little is known about the effects of MCPC ...
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Before the widespread 20th century use of Portland cement magnesium oxide and ... magnesium/phosphate building materials are of such great historic importance. And ... India, China and New Zealand, among other countries. The Great Wall of China and many of the Stupas in India, still standing today, were all
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The Magnesium Phosphate Cement (MPC) is a fast-hardening gelling material produced by a hydration reaction of re ... B and fine aggregates (without fine aggregates for MPC paste) were mixed by a 20 L concrete mixer (HX-15, Huida, Tianjin, China) with single horizontal shaft at a low speed of 60 s. Secondly, the NA, NF and/or WG were slowly ...
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Magnesium phosphate cement (MPC) is a new type of inorganic cementitious rapid repair material, but it has poor toughness and is easy to crack. According to our previous research, these problems can be ameliorated by adding natural coir fiber (CF) into MPC. ... China), which is calcined at 1700 °C to form the dark yellow re-calcined magnesium ...
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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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The chondroitin sulfate (CS, CAS:, MW: 463.36, Purity: 96.5–) was procured from Shanghai Macklin Biochemical Technology Co., Ltd, Shanghai, China., and the magnesium oxide (MgO) and potassium dihydrogen phosphate (KH 2 PO 4) were purchased from Sinopharm Group Co., Ltd., Wuhan, China. All the reagents were of analytical grade.
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