| 摘要 |
<p>A building element structure 10, in particular a window frame or a door frame member, comprising a hollow, preferably extruded, shell 42 formed from a first material, for example a plastics—uPVC, defining at least one internal chamber 44, 46 filled with a mineral foam material 62. The mineral foam material is preferably a geopolymer foam material for example a calcined kaolin based geopolymer. The geopolymer mineral foam material is intended to strengthen the structure 10, in particular in a fire. The building element 10 may have multiple hollows or cavities, some or all of which may be filled with the mineral foam.</p> |
