Where traditional concrete is portland cement based, gypsum underlayment is a gypsum-based concrete that is lighter weight. Utilized for fire and sound mitigation, gypsum underlayment has been ...

Cement begins as a powdery substance, and when mixed with water, it becomes a binder. It is used to create mortar, as well as ...

Gypsum is mined and used for many purpose including making concrete, drywall and several other building materials. In 1965, USG sold the land above the old mines to the Ohio Department of ...