| 摘要 |
The present invention relates to a composite floor structure which includes a permanent mould and concrete (90) cast thereon, wherein the mould is comprised of a plurality of sandwich elements (1). Each sandwich element (1) includes a top sheet (2), a core (3) and a bottom sheet (4). The bottom sheet (4) has a part (11) which projects out from the core (3) along the longitudinal side-edges of the sheet and the outwardly projecting part (11) includes means (13) for engagement with the cast concrete (90). |
