Synthesis, hydration and thermal stability of hydrates in strontium-aluminate cement
Source abstract
Abstract
Abstract The synthesis of strontium aluminate cement, the course of hydration and the thermal stability of hydrates are described in this work. The activation energy of the process of SrAl2O4 formation was calculated using the model-free Kissinger kinetic equation. The synthesis of the main clinker phase required the activation energy of 218 kJ mol−1. The value of kinetic exponent was corresponded to the process controlled by increasing nucleation rate of a new phase. For the hydration of strontium aluminate cement an immediate and intensive evolution of heat without any measurable induction period is typical. The cubic tri-strontium aluminate hexahydrate (Sr3AH6) and alumina gel (AH3) phases were formed as the first and also the main hydration products. The formations of strontium aluminate heptahydrate (SrAH7) and gibbsite (γ-AH3) were recognized after 7th day of hydration process.
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Research context
OpenAlex topics: Concrete and Cement Materials Research · Advanced ceramic materials synthesis · Magnesium Oxide Properties and Applications
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References (33)
Show source-provided references
1. Crystallisation of spray-dried amorphous precursors in the SrO–Al2O3 system: a DSC study10.1016/S0955-2219(03)00015-3 ↗
2. Odler · 2000
3. Re-examining the prospects of aluminous cements based on alkali-earth and rare-earth oxides10.1016/j.cemconres.2009.07.027 ↗
4. Illyouka · 1998
5. 2SrO0.3Al2O3:Eu2+ and 1:29(Ba, Ca)0.6Al2O3:Eu2+ two blue-emitting phosphors10.1149/1.2097210 ↗
6. Fluorescent properties of alkaline earth aluminates of the type MAl2O4 activated by divalents ions10.1149/1.2411379 ↗
7. Synthesis of SrAl2O4: Eu2+, Dy3+, Gd3+ phosphor by combustion method and its phosphorescence properties
8. Luminescent properties of SrAl2O4: Eu, Dy material prepared by the gel method
9. Sol–gel synthesis and investigation of un-doped and Ce-doped strontium aluminates10.1016/j.ceramint.2012.04.042 ↗
10. Phase evolution and thermal behaviors of the solid-state reaction between SrCO3 and Al2O3 to form SrAl2O4 under air and CO2-air atmospheres10.1016/j.ceramint.2011.10.077 ↗
11. Synthesis and characterization of MAl2O4 (M= Ba, Ca, Sr) phosphor by self-propagating high temperature synthesis10.1016/j.egypro.2011.09.045 ↗
12. Synthesis and luminescence properties of needle-like SrAl2O4:Eu, Dy phosphor via a hydrothermal co-precipitation method10.1016/j.jpcs.2010.04.017 ↗
13. Synthesis and luminescence properties of SrAl2O4:Eu2+,Dy3+ hollow microspheres via a solvothermal co-precipitation method10.1016/S1002-0721(12)60265-8 ↗
14. Ball milling induced reduction of SrSO4 by Al10.1016/j.minpro.2010.12.002 ↗
15. System SrO–Al2O3
16. R. · 2013
17. Band structure calculations on the monoclinic bulk and nano-SrAl2O4 crystals10.1016/j.jssc.2004.11.032 ↗
18. Solubility of SrAl2O4 in CaAl2O4—a high resolution powder diffraction study10.1016/S0025-5408(02)01009-7 ↗
19. The structural behaviour of the nepheline family: (1) Sr and Ba aluminates (MAl2O4)10.1180/minmag.1982.045.337.13 ↗
20. Crystal structure of hexagonal SrAl2O4 at 1073K10.1016/j.jssc.2005.06.012 ↗
21. Zur kristallstruktur von CaAl2O410.1016/0022-1902(76)80011-5 ↗
22. Zur Verbindungsbildung von MeO: M2O3. IV. Zur Struktur von monoklinem SrAl2O410.1002/zaac.19814750423 ↗
23. Reaction kinetics in differential thermal analysis10.1021/ac60131a045 ↗
24. Homer Kissinger and the Kissinger equation10.1016/j.tca.2012.04.008 ↗
25. Calculation of the Avrami parameters for heterogeneous solid state reactions using a modification of the Kissinger method10.1007/BF01912301 ↗
26. Surface and internal crystallization in glasses as determined by differential thermal analysis10.1111/j.1151-2916.1996.tb08090.x ↗
27. The applicability of Johnson–Mehl–Avrami model in the thermal analysis of the crystallization kinetics of glasses10.1016/0040-6031(95)02466-2 ↗
28. Temperature controlled synthesis of SrCO3 nanorods via a facile solid-state decomposition rout starting from a novel inorganic precursor10.1016/j.apsusc.2010.11.077 ↗
29. Characterization of SrCO3 and BaCO3 nanoparticles synthesized by cyclic microwave radiation10.1016/j.matlet.2012.08.002 ↗
30. Syntheses and characterization of Sr(OH)2 and SrCO3 nanostructures by ultrasonic method10.1016/j.ultsonch.2009.05.004 ↗
31. Transition alumina phases induced by heat treatment of boehmite: an X-ray diffraction and infrared spectroscopy study10.1016/j.jssc.2009.02.006 ↗
32. Specific signatures of α-alumina powders prepared by calcination of boehmite or gibbsite10.1016/j.powtec.2010.03.036 ↗
33. Role of B2O3 on the phase stability and long phosphorescence of SrAl2O4:Eu, Dy10.1016/S0925-8388(03)00009-4 ↗