Gypsum concrete
Gypsum concrete is a building material used as a floor underlayment[1] used in wood-frame and concrete construction for fire ratings,[1] sound reduction,[1] radiant heating,[2] and floor leveling. It is a mixture of gypsum, Portland cement, and sand.[1] The brand name Gyp-crete, a Maxxon Corporation trademark, has come into general use as a term for gypsum concrete by construction professionals and architects.[citation needed]
Gypsum concrete usage in the construction industry started in the 1980s due to the advantages over lightweight concrete.[citation needed] Gypsum concrete is light weight and fire resistant, and doesn’t shrink crack. A 1.5 inch slab of gypsum concrete weighs 13 pounds per square foot versus 18 pounds per square foot for regular concrete.[3] Both the quality of installation and strength in terms of PSI have increased significantly since the 1980s.[citation needed]
[edit] References
- ^ a b c d Grady, Joe (2004-06-01). "The finer points of bonding to gypsum concrete underlayment.". National Floor Trends. http://www.accessmylibrary.com/article-1G1-118534955/finer-points-bonding-gypsum.html. Retrieved 2009-09-21.
- ^ Grady, Joe (2005-07-01). "Questionable substrates for ceramic tile and dimensional stone.". Floor Covering Installer. http://www.accessmylibrary.com/article-1G1-135121007/questionable-substrates-ceramic-tile.html. Retrieved 2009-09-21.
- ^ Silberstein, Eugene (2004). Residential construction academy: HVAC. Residential Construction Academy Series. Cengage Learning. p. 467. ISBN 9781401849016. http://books.google.ca/books?id=ZW8mg892yfEC&pg=PA467. Retrieved 2009-09-21.
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