Method and apparatus for casting a concrete product
OwnerLassi Jarvinen, Aimo Seppaneninventors
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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.
Claims8
A method for fabricating a hollow-core concrete product in a continuous slipform casting process, in which method the concrete mix is fed into the entire cross section of a slipforming mold of a defined cross section delimited by the feed means (2) of a slipform casting apparatus in a single-step so as to achieve a concrete product of a desired shape, wherein said feed means (2) propels the concrete mix about vibratory shoes (3) so as to attain a compaction effect.
An apparatus for fabricating a hollow-core concrete product in a continuous slipform casting process, the apparatus comprising at least one auger feeder (2) for feeding concrete mix into the entire cross section of a slipforming mold of a defined cross section in a single-step and means (8) for actuating the rotation of said auger feeder, wherein said apparatus includes at least one vibratory shoe (3) for concrete mix compaction and means (9) for effecting the movement of said vibratory shoe.
Dependencies are inferred from the claim text.