| Download | - View accepted manuscript: Thermal decomposition of nanoparticulate Ca(OH)2 - anomalous effects (PDF, 1.4 MiB)
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| Author | Search for: Sato, T.1; Search for: Beaudoin, J. J.1; Search for: Ramachandran, V. S.1; Search for: Mitchell, L. D.1; Search for: Tumidajski, P. J. |
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| Affiliation | - National Research Council of Canada. NRC Institute for Research in Construction
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| Format | Text, Article |
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| Subject | Ca(OH)2, thermal decomposition, crystallinity; Cement/Concrete |
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| Abstract | Different forms of Ca(OH)2 with varying degrees of crystallinity and surface area were prepared using Ca(OH)2 and CaCO3 as starting materials.They were decomposed and the hydrated CaO formed at different conditions. The nitrogen surface area values of Ca(OH)2 ranged from 3.7 to 31.1 m2/g. The presence of two separate and distinct thermal decomposition events (in DTG) was observed, depending on the degree of crystallinity. Endotherms occurred at temperatures of about 426 and 454°C. Binary mixtures of Ca(OH)2 with substantially different degrees of crystallinity exhibited a well defined thermal decomposition doublet. The peak height of each endotherm was dependent on the mass proportions of each mixture component. Factors, including thermodynamic considerations, affecting the character of the decomposition behavior of Ca(OH)2 are discussed. |
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| Publication date | 2007-01-01 |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NRC number | NRCC 45602
NRC-IRC-18026 |
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| NPARC number | 20377370 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 8944af28-79bd-40e3-a2fc-446de25b9d66 |
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| Record created | 2012-07-24 |
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| Record modified | 2020-05-10 |
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