The effects of high ambient temperatures on gypsum plasters

✍ Scribed by A.E. Mould; D.W. Williams

• Publisher: Elsevier Science
• Year: 1974
• Weight: 212 KB
• Volume: 9
• Category: Article
• ISSN: 0007-3628
• DOI: 10.1016/0007-3628(74)90023-1

✦ Synopsis

G)'psum plasterboard, widel)' used Jot internal partitions in building structures, has been shown to suffer rapid dehydration when heated between 60 to 125"C in the laboratory, under humidi O' conditions representatit,e of those jound in normal buildings (~ 13 mm Hg water t,apour pressure).

This dehydration could have important consequences for the use of gypsum in some building situations, since loss qf water leads' to craeking, powdering and loss of fire resistance.