- Project plans
- Project activities
- Legislation and standards
- Industry context
Last edited 17 Nov 2020
Gypsum is a soft sulfate mineral with the chemical formula CaSO4·2H2O, also known as calcium sulfate dihydrate. It is comprised of calcium, sulphur bound to oxygen, and water. It is an abundant mineral in sedimentary rocks that has been mined and used for construction and and as a fertilizer since the time of Ancient Egypt.
Pure gypsum is typically white, although impurities create a wide range of different colours. Gypsum is moderately water soluble but exhibits retrograde solubility, meaning it becomes less soluble at higher temperatures. It is fire resistant and is effective at preventing the passage of sound.
This base gypsum is used for a wide variety of applications:
 Related articles on Designing Buildings Wiki
Featured articles and news
Cut off from civilian life for over 900 years.
Gaining green support from the carbon giants.
Medieval passageways with spiritual, transport and economic purposes.
Organisation receives accreditation from Investors in People.
Click the button to subscribe.
Communicating the right information at the right time.
Materials can take on different properties to control heat and glare.
Challenges in the construction sector and beyond.
Exploring brick and timber construction techniques.
On wheels or on platforms, micro dwellings are popping up everywhere.
Landlords must now comply with new repair regulations.
You can add articles and help improve knowledge in the construction industry.
Ayo Sokale explains the struggles of being neurodiverse.
Communities, heritage and architecture. Book review.