Anhydrite Super® is a synthetic anhydrous calcium sulphate (CaSO4).
Stable and finely ground, its main use is indoors as a binder in sulphate-based self-levelling screeds—where it dries more rapidly and gains strength more quickly than cement-based self-levelling screeds. In the finished product there is minimal cracking, no risk of curling, reduced efflorescence, and high long-term strength.
Anhydrite Super also reduces shrinkage in calcium aluminate-based products such as self-levelers, tile adhesives, tile grouts, and repair mortars. It can also reduce shrink in portland cement.