| 摘要 |
The invention provides a composite product for use as formwork, which acts as a mold defining a cavity in the ground into which concrete is poured. The composite product comprises: a structural panel formed from polymeric material, the panel being rigid, water proof and gas proof; and a bonding layer, the bonding layer having a structure that provides a keying formation capable of keying into concrete cast against said layer. The structural panel has an inner face and an outer face, and the bonding layer extends over most or all of the inner face of the structural panel, such that, in use, the bonding layer is presented on the surface of the formwork that defines the cavity within which concrete is poured and serves to fully bond the formwork to the cast concrete. |
