A method for manufacturing a prefabricated concrete product is disclosed, in which method, a concrete slab with a recess at its upper surface is cast with slipform casting on a casting bed, and after the slipform casting of the slab the recess of the fresh cast slab is equipped with ducts, piping and/or wiring components, after which the recess is covered with concrete mass, and the concrete product is left to cure. The invention also relates to such a prefabricated concrete product.
B28B 1/08 - Producing shaped articles from the material by vibrating or jolting
B28B 3/22 - Producing shaped articles from the material by using pressesPresses specially adapted therefor wherein the material is extruded by screw or worm
A method for recycling concrete mass in a slipform casting process, where the concrete mass is first cast and compacted with a slipform casting machine comprising a restricted cross-section to form a concrete product to be cast and at least one concrete mass tank for feeding concrete mass to the restricted cross-section, and the cast concrete mass is removed from areas of the fresh cast portion of the concrete product, wherein the removed fresh concrete mass is conveyed and dosed back to the at least one concrete mass tank of the slipform casting machine. The invention also relates to a system and a casting machine for implementing the method.
B28B 1/00 - Producing shaped articles from the material
B28B 1/26 - Producing shaped articles from the material by slip-casting, i.e. by casting a suspension or dispersion of the material in a liquid-absorbent or porous mould, the liquid being allowed to soak into or pass through the walls of the mouldMoulds therefor
B28B 11/12 - Apparatus or processes for treating or working the shaped articles for removing parts of the articles by cutting
B28B 3/22 - Producing shaped articles from the material by using pressesPresses specially adapted therefor wherein the material is extruded by screw or worm
The invention relates to an arrangement for casting concrete products, which comprises at least one central transfer wagon movable on a path on a center process line for moving the molds/mold tables from one work station for a process stage to another work station on a main level of the production process line, which work stations are located along the path of the central transfer wagon on at least at one side of the path of the center process line. At least one of the central transfer wagons of the arrangement comprises a lifting mechanism by which the molds/mold tables are liftable to at least one upper level.
B28B 15/00 - General arrangement or layout of plant
B28B 5/04 - Producing shaped articles from the material in moulds or on moulding surfaces, carried or formed by, in or on conveyors irrespective of the manner of shaping in moulds moved in succession past one or more shaping stations
Method and apparatus for casting prefabricated concrete products with a substantially horizontal slipform casting process, where the concrete mass is fed in at least one feeding stage to a slipform casting mold compacting and defining the product to be cast, wherein at least one part is embedded in the concrete mass after the at least one concrete mass feeding stage and before the final compaction of the upper surface of the product to be cast.
B28B 23/18 - Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material wherein the elements are reinforcing members for the production of elongated articles
B28B 23/00 - Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material
B28B 3/22 - Producing shaped articles from the material by using pressesPresses specially adapted therefor wherein the material is extruded by screw or worm
B28B 23/02 - Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material wherein the elements are reinforcing members
B28B 1/08 - Producing shaped articles from the material by vibrating or jolting
B28B 11/02 - Apparatus or processes for treating or working the shaped articles for attaching appendages, e.g. handles, spouts
E04G 21/14 - Conveying or assembling building elements
5.
Auger feeder of concrete mix and method of manufacturing an auger feeder
The invention relates to an auger feeder of concrete mix having a helical segment, which auger feeder has at least one insert (22), which is manufactured of material that is softer than that used for manufacturing the auger feeder's helical segment. One insert (22) is mounted on a downstream end of the auger feeder. The invention also relates to a method of manufacturing an auger feeder, which method includes manufacture of a helical segment of the auger feeder, in which method at least one insert is manufactured from a material softer than that used for the auger feeder's helical segment. The insert (22) is to be mounted on a downstream end of the auger feeder of the casting of the auger feeder's helical segment.
B65G 33/14 - Screw or rotary spiral conveyors for fluent solid materials comprising a screw or screws enclosed in a tubular housing
B22D 19/04 - Casting in, on, or around, objects which form part of the product for joining parts
B28B 3/22 - Producing shaped articles from the material by using pressesPresses specially adapted therefor wherein the material is extruded by screw or worm
B30B 11/24 - Extrusion pressesDies therefor using screws or worms
B22D 19/00 - Casting in, on, or around, objects which form part of the product
B22D 25/02 - Special casting characterised by the nature of the product by its peculiarity of shapeSpecial casting characterised by the nature of the product of works of art
6.
Method and apparatus for casting prefabricated prestressed concrete products
A method and an apparatus for casting prefabricated prestressed concrete products with a substantially horizontal slipform casting process, in which method reinforcement strands are stressed in a bundle on a casting bed before the slipform casting is started, wherein the expected behavior of at least one measurable variable affecting the strand stressing process during the strand stressing process is predetermined, and the behavior of the at least one measurable variable is measured and compared to its predetermined expected behavior during the strand stressing process.
E04C 5/08 - Members specially adapted to be used in prestressed constructions
E04C 2/06 - Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like materialBuilding elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of asbestos cement reinforced
B28B 23/04 - Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material wherein the elements are reinforcing members the elements being stressed
E04G 21/12 - Mounting of reinforcing insertsPrestressing
7.
Method and apparatus for casting concrete products
A method and an apparatus for casting concrete products by mold casting, where concrete mix is fed in a casting mold from a casting apparatus moved above the mold, and the concrete mix is vibrated with a vibrator assembly located at least partially in the area inside a nozzle of the casting apparatus, wherein the concrete mix is vibrated in the area inside the nozzle with the vibrator assembly performing only vertical vibrating motion.
B28B 1/093 - Producing shaped articles from the material by vibrating or jolting by means directly acting on the material, e.g. by cores wholly or partly immersed in the material
B28B 1/14 - Producing shaped articles from the material by simple casting, the material being neither forcibly fed nor positively compacted
B28B 13/02 - Feeding the unshaped material to moulds or apparatus for producing shaped articles
E04G 21/02 - Conveying or working-up concrete or similar masses able to be heaped or cast
8.
Method, apparatus and hollow core forming member for casting concrete products by slipform casting
A method for casting a hollow core concrete product with a substantially horizontal slipform casting process, where concrete mass is fed at least in one feeding stage through a limited cross-section (5, 6, 7) moving progressively along with the cast, and at least one core is formed in the concrete product to be cast with a core forming member (4), wherein the thickness of webs between the cores of the product to be cast are changed during the slipform casting process by changing the width of the at least one core forming member (4). The invention also relates to such an apparatus and a core forming member.
B28B 7/30 - CoresMandrels adjustable, collapsible, or expanding
B28B 3/22 - Producing shaped articles from the material by using pressesPresses specially adapted therefor wherein the material is extruded by screw or worm
B28B 1/26 - Producing shaped articles from the material by slip-casting, i.e. by casting a suspension or dispersion of the material in a liquid-absorbent or porous mould, the liquid being allowed to soak into or pass through the walls of the mouldMoulds therefor
An apparatus for sawing cured slipform cast concrete products, which apparatus comprises a frame with wheels, and a concrete saw connected movably to the frame, wherein the apparatus comprises a brushing unit for cleaning slipform casting bed.
B28D 1/04 - Working stone or stone-like materials, e.g. brick, concrete, not provided for elsewhereMachines, devices, tools therefor by sawing with circular saw blades or saw discs
B28D 1/02 - Working stone or stone-like materials, e.g. brick, concrete, not provided for elsewhereMachines, devices, tools therefor by sawing
B28D 1/00 - Working stone or stone-like materials, e.g. brick, concrete, not provided for elsewhereMachines, devices, tools therefor
B28D 7/02 - Accessories specially adapted for use with machines or devices of the other groups of this subclass for removing or laying dust, e.g. by spraying liquidsAccessories specially adapted for use with machines or devices of the other groups of this subclass for cooling work
10.
METHOD FOR THE REMOVAL OF DUST GENERATED IN SAWING, A SAW BLADE, AND A SAW
A method for the removal of dust generated in the sawing of concrete, rock material, or other suchlike material, said method comprising sawing the material with a saw comprising a rotatable saw blade (1, 8), the dust being sucked through suction channels (2, 9) provided inside the saw blade (1, 8). The invention relates also to such a saw blade, as well as to a saw equipped with the saw blade.
B28D 7/02 - Accessories specially adapted for use with machines or devices of the other groups of this subclass for removing or laying dust, e.g. by spraying liquidsAccessories specially adapted for use with machines or devices of the other groups of this subclass for cooling work
11.
Auger feeder for concrete mix, and slipform-casting apparatus
An auger feeder for concrete mix, comprising a helical segment (1), whereby the auger feeder comprises an insert (2) mounted on an upstream end of the auger feeder, said insert being manufactured in a material softer than that used for manufacturing the auger feeder's helical segment (1), and said insert comprising means (4) for fastening the auger feeder to a casting apparatus. The invention also comprises a method for manufacturing such an auger feeder, and a slipform-casting apparatus equipped with such an auger feeder.
patents
