A composition for a synthetic stone is disclosed, the composition is based on a component A that includes an acrylic resin and a component B including a filler.

A multi-component resin system can be used for producing a mortar composition based on isocyanate amine adducts for the chemical fastening of construction elements. A mortar composition based on isocyanate amine adducts can be produced from the multi-component resin system. A method can be used for the chemical fastening of construction elements in mineral substrates with the mortar composition based on the isocyanate amine adducts.

A multi-component resin system can be used for producing a mortar composition based on isocyanate amine adducts for the chemical fastening of construction elements. A mortar composition based on isocyanate amine adducts can be produced from the multi-component resin system. A method can be used for the chemical fastening of construction elements in mineral substrates with the mortar composition based on the isocyanate amine adducts.

This disclosure provides gypsum cement compositions which comprise an aggregate stabilizing mixture containing a combination of a polysaccharide gum and a polyacrylamide-gelatin blend, and methods for making and using these compositions, including pourable/pumpable floor underlayment slurries and methods for forming high strength underlayment on different substrates.

This disclosure provides gypsum cement compositions which comprise an aggregate stabilizing mixture containing a combination of a polysaccharide gum and a polyacrylamide-gelatin blend, and methods for making and using these compositions, including pourable/pumpable floor underlayment slurries and methods for forming high strength underlayment on different substrates.

A composition is provided. The composition consists essentially of (a) 1 to 30 wt. % of a hydrogen phosphate selected from the group consisting of mono and dihydrogen phosphates of sodium, potassium, ammonium, magnesium, calcium, aluminium, zinc, iron, cobalt, and copper; (b) 1 to 40 wt. % of a compound selected from the group consisting of oxides, hydroxides, and oxide hydrates of magnesium, calcium, iron, zinc, and copper; (c) 40 to 95 wt. % of a particulate filler selected from the group consisting of glass; mono-, oligo- and poly-phosphates of magnesium, calcium, barium and aluminum; calcium sulfate; barium sulfate; simple and complex silicates; simple and complex aluminates; simple and complex titanates; simple and complex zirconates; zirconium dioxide; titanium dioxide; aluminum oxide; silicon dioxide; silicon carbide; aluminum nitride; boron nitride and silicon nitride; and (d) 0 to 25 wt. % of a constituent that differs from constituents (a) to (c).

The invention relates to a method for layer-by-layer deposition of concrete by providing extrudable concrete. A first flow comprising a binder material and water and a second flow comprising a carrier material, an additional component and water are mixed in a static mixer to form a third flow of extrudable concrete. The material of the second flow has a shorter initial setting time than the material of the first flow. The first flow has a first viscosity V1 and the second flow has a second viscosity V2 so that the ratio V1/V2 ranges between 1/40 and 40. The third flow has a viscosity larger than the viscosity of the first flow and the second flow and a yield stress larger than the yield stress of the first flow and the second flow. The material of the third flow has an initial setting time shorter than initial setting time of the first flow.

The invention further relates to a system to extrude concrete, in particular for layer-by-layer deposition of concrete.

The invention relates to a method for layer-by-layer deposition of concrete by providing extrudable concrete. A first flow comprising a binder material and water and a second flow comprising a carrier material, an additional component and water are mixed in a static mixer to form a third flow of extrudable concrete. The material of the second flow has a shorter initial setting time than the material of the first flow. The first flow has a first viscosity V1 and the second flow has a second viscosity V2 so that the ratio V1/V2 ranges between 1/40 and 40. The third flow has a viscosity larger than the viscosity of the first flow and the second flow and a yield stress larger than the yield stress of the first flow and the second flow. The material of the third flow has an initial setting time shorter than initial setting time of the first flow.

The invention further relates to a system to extrude concrete, in particular for layer-by-layer deposition of concrete.

A hydraulic binder including (in % by dry weight); A. at least 50 of at least one ground and granulated blast-furnace slag; B. more than 5 of at least one calcium aluminate cement and/or of at least one calcium sulfoaluminate cement; C. more than 5 of at least one source of sulfate ions; D. between 1 and 5 of Ca(OH).sub.2 and/or Portland cement; E. between 0.01 and 1 of at least one alkali metal carbonate; F. and at least one alkalifying reagent consisting of at least one alkali metal carbonate and/or bicarbonate, different from E; under the following conditions: (i) amount of C allows sulfate ions of C to react with B and A; (ii) the amount of F sufficiently causes a reaction with D in water resulting in a wet formulation with a pH not less than 12, for a water-to-mortar mixing rate between 10 and 35% by weight.

A hydraulic binder including (in % by dry weight); A. at least 50 of at least one ground and granulated blast-furnace slag; B. more than 5 of at least one calcium aluminate cement and/or of at least one calcium sulfoaluminate cement; C. more than 5 of at least one source of sulfate ions; D. between 1 and 5 of Ca(OH).sub.2 and/or Portland cement; E. between 0.01 and 1 of at least one alkali metal carbonate; F. and at least one alkalifying reagent consisting of at least one alkali metal carbonate and/or bicarbonate, different from E; under the following conditions: (i) amount of C allows sulfate ions of C to react with B and A; (ii) the amount of F sufficiently causes a reaction with D in water resulting in a wet formulation with a pH not less than 12, for a water-to-mortar mixing rate between 10 and 35% by weight.