Fly ash is a product of coal-fired power plants and should not be confused with fly ash from waste incineration plants or residues from other combustion processes. It consists essentially of silicon, aluminium and iron oxides, the main constituents of the earth’s crust.

Certified fly ash according to DIN EN 450 fulfils both the building material criteria and the DiBt specifications for environmental and health compatibility, as well as the requirements for use as an additive for various concretes according to DIN EN 206-1 and DIN 1045-2.

The use of fly ash conserves natural resources, saves energy for the production of comparable building materials and thus serves sustainable environmental protection.

With high-performance partners, large storage capacities at strategically favourable locations and a sophisticated logistics system, we are able to ensure a continuous supply to our customers at home and abroad.

Anhydrite, also called calcium sulphate, is a frequently occurring mineral from the mineral class of anhydrous sulphates without foreign anions.

Grinding up anhydrite and adding a stimulant produces “anhydrite binders”. These are air-hardening, non-hydraulic binders that are comparable to gypsum in their physical and chemical properties. Calcium sulphate binders are used, for example, in residential construction for the production of calcium sulphate screeds or calcium sulphate flowing screeds.

Synthetic calcium sulphate binders are building materials that are produced with low energy input and therefore conserve environmental resources.

Based on this raw material, HENGE Baustoff developed the binder system “” and DuoFlow Compound, which enables the production of an optimal flowing screed in residential and commercial construction.

Cement is a hydraulic binder for the production of mortar and concrete. It is an inorganic, non-metallic, finely ground substance which, after being mixed with water, sets and hardens independently as a result of chemical reactions with the mixing water.

The following varieties are available:

• CEM I 32,5 R
• CEM I 42,5 R
• CEM II B – S 32,5 R
• CEM II B – S 42,5 N
• CEM II A – S 42,5 R
• CEM III A

Other cement types on request!