Preparation and properties of a magnesium phosphate cement with dolomite
Source abstract
Abstract
Abstract Calcined dolomite containing free-CaO cannot be directly applied in magnesium phosphate cement (MPC) as magnesia raw materials. To chemically combine with CaO and replace magnesite, dolomite-bauxite-gypsum (DBG) powders were calcined to produce MPC containing ye'elimite. The properties of the calcined DBG powders obtained at calcination temperatures no higher than 1300 °C were studied. The performance of these MPC pastes prepared with calcined DBG powders and the hydration process of the new system were also investigated. Results showed that the calcined DBG powders were mainly composed of magnesia, ye'elimite and belite. MPC pastes with calcined DBG powders exhibited high early compressive strength and good volume stability. Ye'elimite was confirmed to participate in the hydration reactions and would also improve the water resistance of the MPC pastes. Some new amorphous hydration products containing Al-P in mesh-like structures were observed during water curing and might be beneficial for the compressive strength development.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Magnesium Oxide Properties and Applications · Layered Double Hydroxides Synthesis and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (53)
Show source-provided references
1. Magnesia-based cements: a journey of 150 years, and cements for the future?10.1021/acs.chemrev.5b00463 ↗
2. Influence of magnesium-to-phosphate ratio and water-to-cement ratio on hydration and properties of magnesium potassium phosphate cements10.1016/j.cemconres.2019.105781 ↗
3. Effect of early hydration temperature on hydration product and strength development of magnesium phosphate cement (MPC)10.1016/j.cemconres.2015.07.005 ↗
4. Properties of fly ash blended magnesium potassium phosphate mortars: effect of the ratio between fly ash and magnesia10.1016/j.cemconcomp.2018.04.002 ↗
5. Experimental study of magnesium phosphate cements modified by metakaolin10.1016/j.conbuildmat.2016.07.092 ↗
6. Influence of low-grade bauxite on the properties of magnesium phosphate cement10.1016/j.conbuildmat.2020.118052 ↗
7. On the influence of Mg/P ratio on the properties and durability of magnesium potassium phosphate cement pastes10.1016/j.cemconres.2017.02.033 ↗
8. Bond behavior and interfacial micro-characteristics of magnesium phosphate cement onto old concrete substrate10.1016/j.conbuildmat.2018.02.018 ↗
9. Deicer-scaling resistance of phosphate cement-based binder for rapid repair of concrete10.1016/S0008-8846(01)00651-2 ↗
10. Performance assessment of repair material for deteriorated concrete slabs using chemically bonded cement10.1016/j.conbuildmat.2019.117468 ↗
11. Effects of water content, magnesia-to-phosphate molar ratio and age on pore structure, strength and permeability of magnesium potassium phosphate cement paste10.1016/j.matdes.2014.07.073 ↗
12. Mechanisms of k-struvite formation in magnesium phosphate cements10.1016/j.cemconres.2016.11.008 ↗
13. Preparation and characterization of a degradable magnesium phosphate bone cement10.1093/rb/rbw024 ↗
14. Citric acid enhances the physical properties, cytocompatibility and osteogenesis of magnesium calcium phosphate cement10.1016/j.jmbbm.2019.02.026 ↗
15. Fundamental properties of magnesium phosphate cement mortar for rapid repair of concrete10.1155/2016/7179403 ↗
16. Immobilization of solidified ceramic forms with magnesium phosphate cement10.1016/j.ceramint.2019.03.252 ↗
17. Experimental study on cesium immobilization in struvite structures10.1016/j.jhazmat.2015.09.049 ↗
18. Recipe development of low-cost wollastonite-based phosphate cements10.1016/j.conbuildmat.2018.08.207 ↗
19. Magnesium phosphate cements formulated with a low-grade MgO by-product: physico-mechanical and durability aspects10.1016/j.conbuildmat.2015.05.071 ↗
20. Effect of waterglass on water stability of potassium magnesium phosphate cement paste10.1016/j.cemconcomp.2014.03.012 ↗
21. Characteristics and durability test of magnesium phosphate cement-based material for rapid repair of concrete10.1007/BF02479332 ↗
22. Experimental research of water stability of magnesium alumina phosphate cements mortar10.1016/j.conbuildmat.2015.06.050 ↗
23. Influence of fly ash and metakaolin on the microstructure and compressive strength of magnesium potassium phosphate cement paste10.1016/j.cemconres.2018.06.003 ↗
24. Study of using dolomite ores as raw materials to produce magnesium phosphate cement10.1016/j.conbuildmat.2020.119147 ↗
25. High-early-strength magnesium phosphate cement with fly ash
26. Soil quality degradation in a magnesite mining area10.1016/S1002-0160(10)60084-7 ↗
27. Singh · 2001
28. Thermal decomposition of natural dolomite10.1007/s12034-007-0056-z ↗
29. Wagh · 2016
30. Calcium sulphoaluminate cements made with phosphogypsum: production issues and material properties10.1016/j.cemconcomp.2014.01.009 ↗
31. Studies on the early hydration of two modifications of ye'elimite with gypsum10.1016/j.cemconres.2016.11.009 ↗
32. Corrosion resistance of steel embedded in sulfoaluminate-based binders10.1016/j.cemconcomp.2018.01.014 ↗
33. A chemical/mineralogical investigation of the behavior of sulfoaluminate binders submitted to accelerated carbonation10.1016/j.cemconres.2018.04.006 ↗
34. Investigation of magnesium phosphate cement hydration in diluted suspension and its retardation by boric acid10.1016/j.cemconres.2016.04.010 ↗
35. Hydration behavior of magnesium potassium phosphate cement and stability analysis of its hydration products through thermodynamic modeling10.1016/j.cemconres.2017.03.015 ↗
36. Effect of MgO on the composition and properties of alite-sulphoaluminate cement10.1016/j.cemconres.2004.08.008 ↗
37. Influence of fly ash on the hydration of calcium sulfoaluminate cement10.1016/j.cemconres.2017.02.030 ↗
38. Study on a cementing system taking alite-calcium barium sulphoaluminate as main minerals10.1007/s10853-005-2005-9 ↗
39. Clinkering and hydration of belite-alite- ye'elimite cement10.1016/j.cemconcomp.2017.04.002 ↗
40. Effects of sulphoaluminate cement on the strength and water stability of magnesium potassium phosphate cement10.1016/j.conbuildmat.2016.12.011 ↗
41. The influence of MgO on the hydration properties of C4A3S¯
42. Mechanism of setting reaction in magnesia-phosphate cements10.1016/S0008-8846(99)00254-9 ↗
43. Hydration/dehydration characteristics of struvite and dittmarite pertaining to magnesium ammonium phosphate cement systems10.1007/BF01130204 ↗
44. Reaction mechanism of magnesium potassium phosphate cement with high magnesium-to-phosphate ratio10.1016/j.cemconres.2018.03.013 ↗
45. Chemically bonded phosphate ceramics: I, a dissolution model of formation10.1111/j.1151-2916.2003.tb03569.x ↗
46. Novel understanding of calcium silicate hydrate from dilute hydration10.1016/j.cemconres.2017.04.016 ↗
47. Effect investigation of nanofillers on C-S-H gel structure with Si NMR10.1061/(ASCE)MT.1943-5533.0002559 ↗
48. Hydration products in sulfoaluminate cements: evaluation of amorphous phases by XRD/solid-state NMR10.1016/j.cemconres.2016.05.014 ↗
49. Structure of Portland cement pastes blended with sonicated silica fume10.1061/(ASCE)MT.1943-5533.0000502 ↗
50. Mackenzie · 2002
51. 27Al multiple-quantum MAS and 27Al{1H} CPMAS NMR study of amorphous aluminosilicates10.1016/S0022-3093(01)00313-1 ↗
52. High-resolution 27Al NMR of aluminosilicates10.1021/ja00268a002 ↗
53. Incorporation of aluminum in the calcium silicate hydrate (C-S-H) of hydrated Portland cements: a high-field 27Al and 29Si MAS NMR investigation10.1021/ic020607b ↗