Aqueous gypsum plaster-cement composition and its use
AssigneeCrupe International (IP) GmbH
InventorsHubert Lichtinger, Bernd Bruno Winfried Eck
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Abstract
An aqueous gypsum plaster-cement composition comprises a hydraulic binder consisting of calcined gypsum and hydraulic cement in a weight ratio of from about 4:1 to about 2:1, an aggregate which comprises sand, a foam, a perlite, rice hulls or a mixture thereof, a superplasticizer comprising an air entraining agent, a retarder, and water in an amount of from about 0.4 to about 0.75 parts by weight per part of binder, with the proviso that the gypsum plaster-cement composition contains essentially neither a pozzolana nor lime. The use thereof, a method of constructing buildings using this composition and the buildings obtainable in this way are also described.
Claims18
An aqueous gypsum plaster-cement composition comprising:
- a hydraulic binder comprising calcined gypsum and hydraulic cement in a weight ratio of from about 4:1 to about 2:1;
- an aggregate comprising at least one of sand, a foam, a perlite, and rice hulls;
- a superplasticizer comprising an air entraining agent;
- a retarder;
- and
- water in an amount of from about 0.4 to about 0.75 parts by weight per part of binder,
- wherein the gypsum plaster-cement composition comprises essentially neither a pozzolana nor lime.
A method of constructing a building comprising a framework formed of at least one of steel, wood, and plastic, the method comprising:
- fastening meshes formed of at least one of metal and plastic onto the framework and stretching the fastened meshes between the elements of the framework;
- and
- spraying or manually applying an aqueous gypsum plaster-cement composition onto the meshes and the framework,
- wherein the aqueous gypsum plaster-cement composition comprises:
- a hydraulic binder comprising calcined gypsum and hydraulic cement in a weight ratio of from about 4:1 to about 2:1;
- an aggregate comprising at least one of sand, a foam, a perlite, and rice hulls;
- a superplasticizer comprising an air entraining agent;
- a retarder;
- and
- water in an amount of from about 0.4 to about 0.75 parts by weight per part of binder;
- and
- wherein the gypsum plaster-cement composition comprises essentially neither a pozzolana nor lime.
A building, comprising:
- a framework comprising elements formed of at least one material selected from the group consisting of steel, wood, and plastic;
- one or more meshes formed of at least one material selected from the group consisting of metal and plastic, wherein the one or more meshes are fastened to the elements of the framework and stretched between the elements;
- and
- an aqueous gypsum plaster-cement composition applied to the one or more meshes and to the elements of the framework,
- wherein the aqueous gypsum plaster-cement composition comprises:
- a hydraulic binder comprising calcined gypsum and hydraulic cement in a weight ratio of from about 4:1 to about 2:1;
- an aggregate comprising at least one of sand, a foam, a perlite, and rice hulls;
- a superplasticizer comprising an air entraining agent;
- a retarder;
- and
- water in an amount of from about 0.4 to about 0.75 parts by weight per part of binder;
- and
- wherein the gypsum plaster-cement composition comprises essentially neither a pozzolana nor lime.
Dependencies are inferred from the claim text.