IMPROVEMENTS IN OR RELATING TO HOLLOWCORE SLABS

摘要

Hollowcore apparatus for forming a concrete hollowcore slab, comprises a casting bed 1, side wall elements 2 extending longitudinally of the casting bed 1 for defining sides of a casting mould, at least one non-sacrificial inflatable core former 23, at least one, preferably non-sacrificial sleeve 24 for substantially receiving the core former 23, the core former 23 and the sleeve 24 being interconnected and the in use sleeve being turnable inside out by removal of the core former 23 from the casting bed 1, and at least one holder 57 for preventing or limiting uplift of the in use inflated core former 23 and sleeve 24 relative to the casting bed 1. A method and hollowcore slab are also provided.