Abstract: The present invention concerns a quick-setting, hydraulic binding agent, containing calcium silicate cement, in particular Portland cement, reactive calcium aluminates, in particular high alumina cement, as well as, if required, known additives and/or admixtures, which is characterized by a content of: a) 0.1 to 2.0% by volume of an organic and/or inorganic accelerator for hydrating the calcium silicates, b) 0.10 to 2.00% by volume of an organic and/or inorganic setting retarder inhibiting the hydration of the calcium silicates, if required, having a liquefying effect, c) 0.01 to 0.05% by volume of an organic and/or inorganic setting accelerator for hydrated calcium aluminate, and d) 0.01 to 0.20% by volume of an inhibitor with respect to formation of the hydrated calcium aluminum sulfates.

Abstract: The present invention concerns a process for the production of cement clinker in rotary kilns with substitution of primary raw materials and fuels by use of residual materials containing minerals and combustible parts with moisture contents of up to about 65% without predrying. The process makes possible a material and/or thermal utilisation of residual materials in the case of saving of the clay and fuel sources and relief of dumping with simultaneous lowering of the emissions, above all NO.sub.x, in the cement rotary kiln.

Abstract: The present invention relates to a quick-hardening hydraulic bonding agent consisting of calcium silicate cement, particularly Portland cement, as well as additives and/or common admixtures which is characterized by a content of: 94.70 to 99.79% in weight of calcium silicate cement; 0.01 to 2.0% in weight of an organic and/or inorganic accelerator for the hydration of the calcium silicates; 0.1 to 3.0% in weight of an organic and/or inorganic retarding agent which inhibits the hydration of the calcium silicates, possibly having a liquefying effect; 0.01 to 0.30% in weight of an inhibiting agent with respect to the formation of the calcium aluminate sulfate hydrates.

Abstract: The invention relates to a container for bulk goods in substantially solid form, having a central conduit arranged in the center of the container and between the inlet opening and the outlet opening, the conduit having openings in its wall for connection with the body of the container.The invention further relates to a method of evacuation of a container containing bulk goods in substantially solid form, the container having a central conduit extending between the inlet opening and the outlet opening and openings in the conduit for connection with the body of the container, which method comprises maintaining a lower material pressure of the bulk goods in the conduit in the area above the outlet point than in other areas in the conduit and in the body of the container. The invention further relates to a method for emptying the container by maintaining the material pressure of the bulk goods in the conduit in the area above the outlet point at below a specified value.

Abstract: A tension chord designed to be subjected to tensile forces in a predetermined direction made of a highly extensible hydraulically setting mass of low shrinkage and continuous, unidirectionally arranged fiber bundles is described.

Abstract: The invention relates to a method and apparatus of manufacture of fiber reinforced tubular bodies which comprise in combination at least on cover layer and at least one core layer; said layers being wound upon a winding mandrel the shape of which corresponds to the desired shape of the hollow body. The method includes the use of a control unit which comprises a compression tunnel adapted to reduce the thickness of the core and cover layers thereby applying compressional and tensile forces simultaneously to the layers resulting in a more homogeous and therefore stronger bond between the layers.

Abstract: A method for the continuous production of plates and/or shaped bodies of fibre reinforced hydraulic setting masses is described in which the mass is provided in a predetermined thickness over the entire width of the plate to be produced, on a substrate continuously moved by a belt. Fibre cuttings from a cutting device are dispersed in a desired distribution onto the surface of the mass moving with the substrate and these are subsequently incorporated into the mass by a tool acting uniformly over the entire width of the mass. The raw plate can be further processed in its still deformable condition and brought into a desired final shape.

Abstract: Steel, cast iron, synthetic resin or concrete pipes are coated with a hydraulically setting mass, such as cement mortar or a mixture of cement, fibers, aggregates and optional additives, by entraining the mass before it has set from a storage container having two opposite walls moving at about the same speed, one of the container walls being formed by a portion of the circumferential wall of the pipe being rotated about its longitudinal axis and the opposite container wall being formed by a tensioned carrier band having one end affixed to the rotating pipe and the mass with the covering tensioned carrier band being wound around the rotating pipe.

Abstract: Steel, cast iron, synthetic resin or concrete pipes are coated with a hydraulically setting mass, such as cement mortar or a mixture of cement, fibers, aggregates and optional additives, by entraining the mass before it has set from a storage container having two opposite walls moving at about the same speed, one of the container walls being formed by a portion of the circumferential wall of the pipe being rotated about its longitudinal axis and the opposite container wall being formed by a tensioned carrier band having one end affixed to the rotating pipe and the mass with the covering tensioned carrier band being wound around the rotating pipe.

Abstract: A hydraulically setting mass having a small tendency to cracking and a felt-like structure when freshly mixed while showing no cracks or only microscopic cracks when in the hardened condition comprises essentially a fast-hardening hydraulic cement binder, water, alkali-resistant mineral fibers and additives. The freshly mixed mass is applied in a layer to the surface of a tube or the like, the applied mass is completely covered with a sheet and the mass is pressed against the surface with the sheet.