Abstract: 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.

Abstract: A method and an apparatus for casting concrete products substantially with a horizontal slipforming process, the concrete mass in said method being fed by means of at least one feed element (2) through a limited cross section (13, 7, 8) for forming a concrete product, whereby the feed elements (2, 5, 15, 16) produce a two-directional compacting motion for compacting the concrete mass.

Abstract: Method and apparatus for attaching a part forming a lifting lug to fresh, prestressed hollow-core slab or massive slab, wherein the part forming the lifting lug is embedded by vibrating at least partly through the upper surface of the slab, after which the part forming the lifting lug is turned by vibrating, so that the lower parts of the lifting lug set themselves under the reinforcing strands of the slab.

Abstract: 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.

Abstract: Method and apparatus for casting a concrete product with a substantially horizontal slipform casting process, concrete mix in said method being fed by means of at least one feed screw (1) through a limited cross-section for forming the concrete product, whereby the feed screw (1) is brought to circular motion on a plane transversal with respect to the length of the feed screw.

Abstract: A method and an apparatus for casting concrete products substantially with a horizontal slipforming process, the concrete mass in said method being fed by means of at least one feed element (2) through a limited cross section (13, 7, 8) for forming a concrete product, whereby the feed elements (2, 5, 15, 16) produce a two-directional compacting motion for compacting the concrete mass.

Abstract: Method and apparatus for attaching a part forming a lifting lug to fresh, prestressed hollow-core slab or massive slab, wherein the part forming the lifting lug is embedded by vibrating at least partly through the upper surface of the slab, after which the part forming the lifting lug is turned by vibrating, so that the lower parts of the lifting lug set themselves under the reinforcing strands of the slab.

Abstract: A method and an apparatus for collecting waste concrete, where slipform cast and eventually precut concrete product are led to a sawing station, where the concrete product is subjected to desired sawing processes and the sawn product is led out of the sawing station by means of a conveyor line, after which the sawn concrete products are lifted away from the conveyor line while leaving the waste concrete produced by sawing on the conveyor belt to be moved along the conveyor line to a collecting container of waste concrete. In solution in accordance with the invention the filling of the collecting container of waste concrete is monitored and the feeding of the waste concrete is controlled based on the filling.

Abstract: A method for producing hollow-core slabs substantially with a horizontal slipforming process, the concrete mix to be cast being fed in said method through a limited cross section to form a product with a desired form, whereby the areal weight of the hollow-core slab to be cast is changed by changing the width of the hollow core of the hollow-core slab and/or by casting a part of the hollow-cores to be solid.

Abstract: A method and an apparatus for casting self-compacting concrete mix, wherein the self-compacting concrete mix is cast to a mold so that based on the weight and the form of the product to be cast, the total amount of the required concrete mix is determined, the casting points are determined for the product to be cast, at which the concrete mix is cast to the mold, at each casting point the amount of the concrete mix to be cast is determined and the product is cast by casting the determined amounts of concrete mix into the mold at the determined casting points.

Abstract: A method and an apparatus for casting a concrete product with a substantially horizontal slipforming process, the casting mix in said method being fed at least in two different stages to a mold proceeding with the cast, whereby at least in one casting stage the casting mix to be fed to the mold is accelerated into a desired speed before taking the mix to the casting mold.

Abstract: A sidewall system of a casting mold to be fixed detachably to a casting bed, especially to be used with a sidewall robot, said sidewall system comprising a sidewall element (1) and a magnet unit (3) for fixing the sidewall element to the casting bed, whereby one or a plurality of auxiliary magnets (2) have been located to the sidewall element (1), to the surface of the sidewall element setting against the casting bed.

Abstract: A method and apparatus are disclosed for casting prestressed hollow-core concrete products, in which method concrete mix is fed onto a casting bed with the help of feeder augers having a diameter smaller than the height of the hollow-core cavities being formed. The invention is characterized by having the concrete mix flowed along slanted leading-end surfaces of the core-forming mandrels so as to form cavities larger than the cross section of the feeder augers.

Abstract: A method is provided for fabricating a concrete slab in a substantially horizontal slip casting process method, concrete mix is fed into a mold through a delimited cross section moving progressively in the casting process so as to form a concrete product of a desired shape. Onto the surface of the casting bed (1) is placed a core (3, 9, 10, 11) capable of delimiting the cross section of the concrete product (5, 5?) so as to provide an opening or a provision for an opening in the bottom surface of the slab. A core is provided for obtaining an opening or a provision for an opening. The structure and/or material of the core is/are such that the core is capable of yielding in vertical direction. A core may also be a multipart core, the outer part of which becomes detached from the inner part of the core in conjunction with lifting off the concrete slab from the casting bed.

Abstract: A method and apparatus for casting concrete elements with varying, determined length, equipped with one or with a plurality of longitudinal hollow cores, by means of a slipforming apparatus. The apparatus is movable with respect to the bed (2), said apparatus comprising forming members (10) for forming hollow cores. The mass is fed in the first step to the portion of the slab below the hollow cores, and in the second step the hollow-core forming members being brought onto the said portion of the slab and mass is being fed between the forming members and onto them. The forming member (10) for forming a hollow core comprises an attachable extension part (22). The height of a hollow core is changed by changing the extension part of the hollow core forming member.

Abstract: A method is provided are for fabricating a concrete product in a substantially horizontal slip-form casting process, in which method concrete mix is fed into a slip-form mold of a defined cross section moving progressively in the casting process so as to give a concrete product of a desired shape. The input power need of the concrete mix feed and compaction is measured, whereupon the travel resistance of the casting machine is controlled based on the value of a measured process variable. Therefore, quality variations in a slip-form cast product that are caused by changes in the density of the concrete mix and the travel resistance of the casting machine are eliminated.

Abstract: A method is disclosed for casting a concrete product, in which method the concrete product is cast in an essentially horizontal slipform casting process during which the top surface height and profile of the concrete product being cast is measured continually. Based on the measurement results, the relative proportion of the concrete mix flowing to the upper layer or lower layer of the concrete product is controlled by way of moving or tilting a feed trough (12) located below the concrete mix feed means (2).

Abstract: A method for the production of prestressed concrete products and a plant for implementing the method. Moulds provided with pretensioned wires are moved through fixed casting machines into a hardening space. In the hardening space, the combination of mould and product is lifted sideways from the casting line before hardening, using synchronised lifting equipment. The combination may be stacked for space economy. After hardening, the product is removed from the mould using the same lifting equipment. The moulds are returned to the beginning of the casting line, during which stage they are cleaned and refurbished. The products are transferred to cutting and finishing stations.

Abstract: A method and apparatus are disclosed for casting hollow-core concrete products, in which method concrete mix is fed into a mold of a delimited cross section traveling on a casting bed. According to the invention, the concrete mix is compacted with the help of vibratory shoes operating downstream of the concrete mix feed means, and the correct shape of the hollow-core cavities is maintained with the help of troweling mandrels.

Abstract: A method and apparatus are disclosed for casting a concrete product, in which method the concrete product is cast in an essentially horizontal slipform casting process during which the top surface height and profile of the concrete product being cast is measured continually. Based on the measurement results, the relative proportion of the concrete mix flowing to the upper layer or lower layer of the concrete product is controlled by way of moving or tilting a feed trough (12) located below the concrete mix feed means (2).