| 摘要 |
A casting composition for forming a slab comprises water, a lightweight aggregate, a cement, sand, a waterproofing agent, and a mineral oxide additive to impart a selected colour to the slab. Adaptable to the casting of such a slab is a mould comprising a sheet (30) which has one or more casting cavities (32) for forming individual slabs. The bottom and side walls (36) of the or each cavity being uneven and exhibiting imperfections (38) arranged to impart to a slab cast therein a surface appearance similar to that of bricks or building stones, whereby the stripped slab simulates a brick or building stone when viewed from one side. A facing panel structure, which may utilise the aforesaid slabs, comprises a plurality of slabs (11) cast about elements of mesh sheeting so as to be held by the mesh sheeting (12) in a flat spaced array to simulate individually laid bricks or stonework when viewed from one side of the panel structure. <IMAGE> |
