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Calcination of Gypsum Wallboard
Posted by: dcarpenter (IP Logged)
Date: December 03, 2020 04:00PM
Ran across a fire investigator that is saying a green or turquoise color of gypsum wallboard indicates a second phase of calcination after exposure to a fire.
I am pretty familiar with the available scientific literature on the calcination of gypsum wallboard and (outside of impurities) have never heard the color change to green or turquoise as being any indication of the extent of calcination.
Has anyone else heard or seen the use of such an indicator with respect to the calcination of gypsum wallboard?
Douglas J. Carpenter, MScFPE, CFEI, PE, FSFPE
Vice President & Principal Engineer
Combustion Science & Engineering, Inc.
8940 Old Annapolis Road, Suite L
Columbia, MD 21045
(410) 884-3266
(410) 884-3267 (fax)
www.csefire.com
I am pretty familiar with the available scientific literature on the calcination of gypsum wallboard and (outside of impurities) have never heard the color change to green or turquoise as being any indication of the extent of calcination.
Has anyone else heard or seen the use of such an indicator with respect to the calcination of gypsum wallboard?
Douglas J. Carpenter, MScFPE, CFEI, PE, FSFPE
Vice President & Principal Engineer
Combustion Science & Engineering, Inc.
8940 Old Annapolis Road, Suite L
Columbia, MD 21045
(410) 884-3266
(410) 884-3267 (fax)
www.csefire.com
| Subject | Views | Written By | Posted |
|---|---|---|---|
 Calcination of Gypsum Wallboard |
758 | dcarpenter | 12/03/2020 04:00PM |
|
Re: Calcination of Gypsum Wallboard
|
499 | Chris Bloom, CJBFireConsultant | 12/04/2020 09:55PM |
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Re: Calcination of Gypsum Wallboard
|
435 | Chris Bloom, CJBFireConsultant | 12/23/2020 06:24PM |
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Re: Calcination of Gypsum Wallboard
|
483 | John Lentini | 12/28/2020 03:10PM |
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