| 摘要 |
A method and an apparatus (1) for casting concrete products with a substantially horizontal slipform casting process, where concrete mass is fed under pressure through a restricted cross-section (5, 6, 7) defining the product to be cast, wherein the upper surface (7) of the restricted cross-section (5, 6, 7) is formed of a plurality of sections (7a, 7a', 7b, 7b', 7c, 7c'), which sections are moved in back and forth trowelling motion in the casting direction, wherein the adjacent sections are moved at different phases and/or at different speeds. |
