Preparation and characterization of calcium aluminate by chemical synthesis

Feng Chen; Yanruo Hong; Jialin Sun; Jinglong Bu

doi:10.1016/S1005-8850(06)60019-4

Volume 13 Issue 1

Feb. 2006

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International Journal of Minerals, Metallurgy and Materials > 2006 > 13(1): 82-86. > DOI: 10.1016/S1005-8850(06)60019-4

Feng Chen, Yanruo Hong, Jialin Sun, and Jinglong Bu, Preparation and characterization of calcium aluminate by chemical synthesis, J. Univ. Sci. Technol. Beijing , 13(2006), No. 1, pp.82-86. https://dx.doi.org/10.1016/S1005-8850(06)60019-4

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Materials

Preparation and characterization of calcium aluminate by chemical synthesis

Feng Chen^1), ,,
Yanruo Hong¹⁾,
Jialin Sun¹⁾ and
Jinglong Bu^1,2)

Author Affilications

Materials Science and Engineering School, University of Science and Technology Beijing, Beijing 100083, China
Hebei Physical and Engineering Institute, Tangshan 063009, China

Funds:

This work was financially supported by the National Natural Science Foundation of China Key Program (No. 50332010) and the Na-tional Natural Science Foundation of China (No. 50172007).

Received: 12 November 2004;

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Abstract

Abstract

Saturated Ca(OH)₂ and AlCl₃ solutions were used to synthesize calcium aluminate hydrate precipitates at room temperature; high purity calcium aluminate powders with stable phases were made by calcination of the precursors at a temperature as low as 1100℃. PSD and BET analysis revealed the particles with sizes ranging from submicrometer to several micrometers and with a specific area of 13 nr/g. The measurement of hydraulic exotherm revealed that the exothermal rate is in peak for about 2 h. The exothermal quantities are 449.24 J/g at 12 h and 488.38 J/g at 24 h. Its strength development is quick and the 1 day curing strength is almost equal to 100% of the 3 days curing strength in the mortar test.
- calcium aluminate,
- preparation,
- characterization,
- chemical synthesis

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