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]
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]
References
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- ↑ 1.0 1.1 1.2 1.3 Grady, Joe (2004-06-01). "The finer points of bonding to gypsum concrete underlayment". National Floor Trends. Retrieved 2009-09-21.
- ↑ Grady, Joe (2005-07-01). "Questionable substrates for ceramic tile and dimensional stone". Floor Covering Installer. Retrieved 2009-09-21.
- ↑ Silberstein, Eugene (2004). Residential construction academy: HVAC. Residential Construction Academy Series. Cengage Learning. p. 467. ISBN 9781401849016. Retrieved 2009-09-21.
