Abstract:
Method and apparatus (1; 21) for casting prefabricated concrete products with a substantially horizontal slipform casting process, where the concrete mass is fed in at least one feeding stage (2; 22, 23) to a slipform casting mold (4, 5, 6) compacting and defining the product to be cast, wherein at least one part (10; 25) is embedded in the concrete mass after the at least one concrete mass feeding stage (2; 22, 23) and before the final compaction of the upper surface of the product to be cast.
Abstract:
A paper feed roller-producing method is to be provided, which enables more inexpensive mass produce of a high precision paper feed roller, with a high precision, having no connecting portion in a roller portion, by using a hydraulic composition. The method for producing a paper feed roller includes a rotary shaft and a cylindrical roller portion integrated around an outer periphery of the rotary shaft, characterized in that the roller portion is formed by extruding a hydraulic composition and curing and hardening the extrudate.
Abstract:
A hinge for use in inorganically filled composite materials is provided. The hinge has an inorganically filled structural matrix comprising a water-dispersable organic polymer binder, an aggregate material, and a fibrous material. The hinge allows inorganically filled materials to be bent along a line without breakage of the material. The hinge is preferably formed by scoring a formed sheet of inorganically filled material (50). The hinge is particularly useful in containers that require bending of various container parts, such as in food containers and boxes made from inorganically filled materials.
Abstract:
There is disclosed a reinforcing structural material (1) comprising a plurality of fibre cords (3), each comprising a plurality of fibres (2) formed into a braid (4), the braid (4) being impregnated with a bonding agent (5). The reinforcing structural material (1) can be used to reinforce a moulded inorganic composite.
Abstract:
A method of manufacturing a cementitious composite including: (1) mixing an extrudable cementitious composition by first forming a fibrous mixture comprising fibers, water and a rheology modifying agent and then adding hydraulic cement; (2) extruding the extrudable cementitious composition into a green extrudate, wherein the green extrudate is characterized by being form-stable and retaining substantially a predefined cross-sectional shape; (3) removing a portion of the water by evaporation to reduce density and increase porosity; and (4) heating the green extrudate at a temperature from greater than 65°C to less than 99°C is disclosed. Such a process yields a cementitious composite that is suitable for use as a wood substitute. Particularly, by using higher curing temperatures for preparing the cementitious building products, the building products have a lower bulk density and a higher flexural strength as compared to conventional products. The wood-like building products can be sawed, nailed and screwed like ordinary wood.
Abstract:
Compositions, methods and systems for manufacturing arcticles, including containers and packaging materials, from hydraulically settable and inorganically filled materials are disclosed. Suitable compositions are prepared by mixing together a hydraulically settable binder or organic binder, water, and appropriate additives, such as aggregates, fibers, and rheology-modifying agents, which impart predetermined properties so that an article formed therefrom has the desired performance criteria. The desired article can be molded from the mixture using a variety of moding processes including: die pressing, injection modling, blow molding, jiggering, wet sheet molding, and dry sheet molding. The sheet forming processes require the mixture to first be fashioned into a sheet, such as by the use of an extruder (12) or rollers, after which the sheet is formed, it is hardened. Printed indicya and a coating can then the applied.
Abstract:
In ein Formteil, insbesondere als verlorene Schalung, hergestellt unter Verwendung eines formbaren Baustoffs, ist eine Armierung in Form von Verstärkungsfäden (21-24) und/oder Bewehrungen (2,3) eingebettet. Bei dem Verfahren zur Herstellung eines Formteils durch Strangpressen eines Baustoffs, werden in den aus einem Mundstück (43) austretenden Baustoff vor dem Verlassen des Mundstücks ein oder mehrere Verstärkungsfäden und/oder Bewehrungen eingebracht. Bei einer Vorrichtung zur Herstellung eines Formteils aus einem strangpressbaren Baustoff, aufweisend eine Fördereinrichtung (41) für den Baustoff, einen Presskopf (47), in welchen der geförderte Baustoff hinein gedrückt wird und ein Mundstück (43), welches den Presskopf verschließt, wobei in dem Mundstück dem herzustellenden Profil entsprechende Austrittsöffnungen (44) enthalten sind, ist vor der Austrittsöffnung (44) des Mundstücks (43) eine Zuführung (45) für eine Armierung vorgesehen.
Abstract:
A hinge for use in inorganically filled composite materials is provided. The hinge has an inorganically filled structural matrix comprising a water-dispersable organic polymer binder, an aggregate material, and a fibrous material. The hinge allows inorganically filled materials to be bent along a line without breakage of the material. The hinge is preferably formed by scoring a formed sheet of inorganically filled material (50). The hinge is particularly useful in containers that require bending of various container parts, such as in food containers and boxes made from inorganically filled materials.
Abstract:
Containers incorporating a hydraulically settable structural matrix including a hydraulically settable binder such as cement for use in the storing, dispensing, and/or packaging of food and beverage products are disclosed. The disposable and nondisposable food and beverage articles of manufacture have high tensile, compressive, and flexural strengths, and are lightweight, insulative (if desired), inexpensive, and more environmentally compatible than those currently used. These disposable containers and cups are particularly useful for dispensing hot and cold food and beverages in the fast food restaurant environment. The structural matrix of the food and beverage containers includes a hydraulic cement paste (formed from the reaction of water with, e.g., a portland-type cement) preferably in combination with a rheology-modifying plasticizer, such as methylhydroxyethylcellulose, various aggregate materials, and fibrous materials, which provide desired properties at a cost which is economical.
Abstract:
The invention relates to an apparatus for constructing comprising at least feeding means for providing construction material in layers. The apparatus comprises at least first feeding means for hardening material, second feeding means for insulating material wherein said feeding means are configured to operate substantially concurrently so that a construction layer comprises materials from each feeding means. The apparatus may also provide reinforcement substantially concurrently with the other materials.