Translation of "Slag cement" in German

Slag cement is the answer to the market demand for a low-heat hydration cement type.

Like slag sand or cement, the glass powder is dissolved after incorporation in the aqueous solution.

Slag cement is an environmentally friendly product, which during its production process produces lower CO2 emissions compared to original portland cement.

In combination with blast furnace slag cement, however, the remaining absolute portlandite content in the hardened cement paste is low.

Whereas the former produces and sells cement and slag cement, the latter imports cement from Denmark and sells it in Iceland.

All cement types which are provided in DIN 1164 are preferred, in particular blast furnace slag cement and Portland cement, and mixtures of these cement types with materials which can complement or improve the cement effect, preferably, for example, fly ashes from coal combustion processes or from the silicon preparation process.

Suitable fillers are, for example carbon black, talc, mica, asbestos, kaolin, other natural and synthetic silicates, quartz sand, sand, precipitated and pyrogenic silica, ground slag, fly ash, cement, gypsum, barium sulphate, pulverulant metals, plate-form metals or fiber-form metals and the carbides and nitrides and borides thereof, raw ground rubber and synthetic polymers, such as, for example, PVC, polyolefins and polystyrene, in the form of fibers, powders or in the foamed (expanded) state.

During production, the slag sand or cement, after incorporation in the aqueous solution, is at least etched on the surface if not completely dissolved so that their constituents are distributed homogeneously in the binder matrix.

Portland cement may be replaced in part by mixtures of Portland cement and blast furnace slag (so-called slag or Hochofen cement).

In the last years, these mills are even being used for the grinding of very hard products like clinker and slags to obtain slag cement.

Slag cement is a type of portland cement that utilizes the slag from the steel industry as one of its raw materials.

Hydraulically setting binders e) are, for example, cements, in particular Portland cement, high-alumina cement, trass cement, slag cement, magnesia cement, phosphate cement or blast furnace cement, and also mixed cements, filling cements, fly ash, microsilica, hydraulic lime and gypsum plaster.

It is an object of the invention to create a method for comminution of material to be ground, in particular granulated blast furnace slag, a granulated blast furnace slag/cement mixture or a cement/additive mixture, which has an improved energy balance and thereby lower operating costs.

JP 2006/044958 A2 describes an acid-resistant mortar comprising high-alumina cement, slag sand, polymer dispersion and shrinkage-reducing additive.

Preference is given to Portland cement, high-alumina cement and slag cement and also mixed cements, filling cements, hydraulic lime and gypsum plaster.

The invention also relates to the use at solid compositions comprising calcium silicate hydrate and at least one water-swellable polymer which can form a hydrogel as a setting accelerator in building material mixtures comprising cement, slag, sand, fly ash, silica dust, metakaolin, natural pozzolans, burnt oil shale and/or calcium aluminate cement, or in building material mixtures containing cement and binders based on calcium sulphate, preferably in building material mixtures which contain essentially cement as a hydraulic binder.

Preference is given to building material mixtures containing solid compositions of calcium silicate hydrate and at least one water-swellable polymer which can form a hydrogel, and (portland) cement, slag sand, fly ash, silica dust, metakaolin, natural pozzolans, burnt oil shale and/or calcium aluminate cement, said calcium silicate hydrate not originating from a hydration reaction of (portland) cement with water.

Preference is given to building material mixtures containing solid compositions of calcium silicate hydrate and at least one water-swellable polymer which can form a hydrogel, and (portland) cement, slag sand, fly ash, silica dust, metakaolin, natural pozzolans, burnt oil shale and/or calcium aluminate cement, said solid composition not containing any (portland) cement which has come info contact with water.

Preference is given to Portland cement, aluminate cement and slag cement, and also to mixed cements, filling cements, hydraulic lime and gypsum.

The invention relates to building material mixtures containing solid compositions of calcium silicate hydrate and at least one water-swellable polymer which can form a hydrogel and (portland) cement, slag sand, fly ash, silica dust, metakaolin, natural pozzolans, burnt oil shale and/or calcium aluminate cement, or building material mixtures containing cement and binders based on calcium sulphate, preferably building material mixtures which contain essentially cement as a hydraulic binder.