Method and apparatus for casting a hollow-core concrete product

Details Method and apparatus for casting a hollow-core concrete product Method and apparatus for casting a hollow-core concrete product

B - Operations, Transporting

28

B

B28B 3/22 (2006.01) B28B 1/08 (2006.01) B28B 7/28 (2006.01)

Patent

CA 2488133

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.

Procédé et dispositif servant à couler des produits creux en béton précontraint, ce qui consiste à placer sur un lit de coulage un mélange de béton à l'aide de trémies d'alimentation dont le diamètre est inférieur à la hauteur des cavités intérieures du béton. On fait couler, de façon caractéristique, ce mélange de béton le long des surfaces d'extrémité avant obliques des mandrins servant à former les cavités, de sorte que ces dernières sont supérieures à la section transversale des trémies d'alimentation.

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