0086-21-58386256
Calcium substituted trimagnesium phosphate with the general formula Ca (x)Mg ( (3-x)) (PO (4)) (2) (0 < x < 1.5) was synthesized by calcination of powder mixtures with the …
The effect of magnesium ions on the struc- 9420, UK) and the cement specific surface area (SSA) was determined ture, and mechanical and setting properties of the new cements was using the Brunauer–Emmett–Teller method (BET; GEMINI, Micrometrics, characterized and Ca 2 + and Mg 2+ ion release was studied.
Alternatively, magnesium phosphate cements (MPC) which possess excellent rapid setting, high early strength, proper degradation speed and high adhesive properties have been proposed as suitable substitutes for bone replacement [ 2, 4, 5, 12 ]. As we know, there are several kinds of MPC with different compositions and reaction …
Magnesium phosphate cement (MPC) received increased attention in recent years, but MPC-based concrete is rarely reported. The micro-steel fibers (MSF) were added to MPC-based concrete to enhance its ductility due to the high brittleness in tensile and flexural strength properties of MPC.
Magnesium oxychloride cement (MOC), a type of special construction material, has drawn much research attention in solid waste utilization and environmental protection due to its eco-friendly production. Ammonia soda residue (ASR), a by-product generated from sodium carbonate manufacturing, is one of …
Accelerated bone regeneration through rational design of magnesium phosphate cements Accelerated bone regeneration through rational design of magnesium phosphate cements Acta Biomater. 2022 Apr 17;S1742-7061 (22)00228-8. doi: 10.1016/j.actbio.2022.04.019. Online ahead of print. Authors
This paper reports the test results on the bonding strength between magnesium ammonium phosphate cement and Portland cement. The bonded …
Fundamental properties of magnesium phosphate cement (MPC) were investigated in this paper. The setting time and compressive and bond (i.e., flexural and tensile bond) strengths were …
In this study, calcium phosphate whisker-reinforced magnesium-ammonium-phosphate (struvite) cements were examined at the whisker–matrix interface and the measured strength, reliability and toughness values were correlated to these observations. Moreover, the toughening mechanisms were evaluated.
A magnesium ammonium phosphate cement produced by a process comprising: providing an ammonium salt; providing a powder mixture having molar quantities of the components calcium (Ca), magnesium (Mg) and orthophosphate (P) in the mixture in the ranges 1.00
Magnesium phosphate cement (MPC) was proved to be a cementitious material for preparing porous materials with high early-stage strength under standard …
When mixed with MAPC, the main contents of Portland cement (C 2 S, C 3 S, C 3 A, C 4 AF) and its hydration product Ca (OH) 2 could react with ammonium dihydrogen phosphate (ADP) to form...
Magnesium phosphate cements (MPC) are materials prepared by reacting magnesium oxide with water-soluble phosphates such as mono-ammonium dihydrogen phosphate (ADP), which solidify at ambient temperature through the formation of hydrated phases in the material. A great advantage of these ceramics is that they acquire …
Magnesium phosphate cement (MPC) belongs to the family of chemically bonded ceramics and shows wide applications as compared to traditional cement …
Magnesia-phosphate cements are based on the chemical reaction of acidic liquid or phosphate with a solid basic dead-burned magnesia oxide powder [ 1 ]. Upon being mixed with water, insoluble magnesium ammonium (potassium) phosphate hydrates are formed by acid–base reactions, which constitute the binding phase in the …
Magnesium ammonium phosphate The presence of sparingly soluble components in human urine, such as calcium oxalate, calcium phosphate, magnesium ammonium phosphate, uric acid and l-cystine. Kidney stones are composed mainly of these compounds. The most important of the phosphate bonded cements are the zinc …
The formation of MPC is based on the acid-base reaction, when dead burned MgO reacts with the phosphate salts (NH 4 H 2 PO4: ADP or KH 2 PO 4:KDP) in the presence of water to form the Magnesium ammonium phosphate cement (MAPC) or magnesium potassium phosphate cement (MKPC). MPCs show superior performance …
Magnesia-phosphate cements are based on the chemical reaction of acidic liquid or phosphate with a solid basic dead-burned magnesia oxide powder . Upon being …
Magnesium ammonium phosphate (MAP) has been investigated as a candidate material. Detailed physical and mechanical properties of MAP cement are …
Struvite stones are a common type of urinary or kidney stones that are made of magnesium ammonium phosphate (MgNHPO4·H2O). They make up around 10 to 15 percent of all kidney stones.
Magnesium phosphate cement (MPC) is the broad category of acid-base cement, and the most cementing ingredients are dead-burned magnesia and phosphate. MPC was first discovered and …
Ammonium and ammonia can effectively be synthesized to magnesium ammonium phosphate by adding K 2 HPO 4 ·3H 2 O to Sporosarcina pasteurii liquid. Permeability, porosity, and compressive strength of the sand columns are …
In this study, calcium phosphate whisker-reinforced magnesium-ammonium-phosphate (struvite) cements were examined at the whisker–matrix …
Abstract In this work, zeolitic imidazolate framework-8 containing Zn in favor of bone regeneration was first introduced into magnesium phosphate bone cement (MPCs). The physical properties of ZIF-8/MPCs (ZIFMPCs) including microstructures, setting time, compressive strength and degradation in vitro were studied. The ZIFMPCs …
A recent study reported that magnesium phosphate cement (MPC) can rapidly harden to gain the strength in a short duration, ranging about several hours to the level of normal strength of ordinary …
They are applied pasty into the bone defect and harden afterwards so that the shape adapts to the individual defect. Magnesium phosphates such as magnesium ammonium phosphate hexahydrate (struvite) belong to a new class of these cold setting bone cements. They degrade much faster than the clinically established calcium …
Magnesium phosphate cement (MPC) was prepared from a mixture of dead-burned magnesium oxide (MgO, marked as M), potassium dihydrogen phosphate (KH 2 PO 4, marked as P), and borax (Na 2 B 4 O 7 ∙10H 2 O, marked as B). The dead-burned magnesium oxide (MgO) powder with a specific surface area of 315.7 m 2 /kg …