What is Gypsum?
Calcium Sulphate and its Release into Soil and Groundwater
All over Gypsum
FGD Gypsum: quality criteria and analysis methods
Understanding the Management of Indoor Moulds
Why is Gypsum so effective in Fire?

What is Gypsum?

The mineral Gypsum precipitated some 100 to 200 million years ago when sea water evaporated. From a chemical point of view it is Calcium Sulphate Dihydrate (CaSO4,2H2O) deposited in sedimentary layers on the sea bed. Under high pressure and temperature Gypsum turns into Anhydrite (CaSO4).  

Gypsum Factsheet-en .pdf

Calcium Sulphate and its Release into Soil and Groundwater

Gypsum is a rock like mineral commonly found in the earth’s crust, extracted, processed and used by Man in construction or decoration in the form of plaster and alabaster since 9000 B.C. The facts show that calcium sulphate is a substance with no adverse health and environmental effects.

Calcium Sulphate Soil and Groundwater factsheet-en .pdf

All over Gypsum

The two booklets -one in German and its translation in Dutch- inform the construction supply chain in depth and in technical details all over Gypsum.

Gipsboek-Mei 2006-nl..pdf

Gips-Datenbuch-2006-de.pdf

FGD Gypsum: Quality Criteria and Analysis Method

FGD Gypsum quality criteria parameters are determined in accordance with VGB Instruction Sheet "Analysis of FGDP Gypsum".

FGD Gypsum quality shall be such that it can be used for for the production of gypsum-based products which are equivalent to those made from natural gypsum.

FGD Gypsum Quality Criteria and Analysis Mathods-F-D-E.pdf

Understanding the Management of Indoor Moulds

Even though moulds are a fact of the day-to-day life, mould growth can be eliminated by preventing the conditions which allows the spores (seeds) to develop into moulds and by taking sensible prevention measures detailed in this document. Basically, the key to mould is to control moisture impeding the mould’s spores to come inside the building.

Fact sheet on understanding the management of Indoor Moulds-EN .pdf

Why is Gypsum so effective in Fire?

Gypsum plasters and plasterboards provide good fire protection in buildings due to the unique behaviour of gypsum when exposed to fire. Pure gypsum (CaSO4.2H2O) contains nearly 21% chemically combined water of crystallisation, and about 79% calcium sulphate, which is inert below a temperature of 1200°C.

Fire Fact Sheet-EN .pdf