Composite core stiffened structures for lamination and tiling

摘要

Composite core stiffened structures are two panels, such as fiber reinforced cement back boards, are separated by a foamed core and a stiffener. The resulting composite core is finished with a surface material that is bonded to the foamed core. The stiffness, thermal coefficient of expansion and resistance to hydration and dimensional stability with changes in humidity prevent debonding of the surface material from the composite core.