| 摘要 |
<p>A building component comprises a core formed from one or more sheets or elements of a natural fibre material, each sheet or element having been impregnated with a liquid composition comprising a thermosetting resin, an extending liquid for the thermosetting resin and a catalyst for the thermosetting resin, the thermosetting resin having been polymerised, and an encapsulating layer, from 1 mm to 20 mm thick, encapsulating the core and formed from a composition comprising from 10% to 80% inclusive by weight of the composition of a hydraulic binder, from 6% to 60% inclusive by weight of the hydraulic binder of a water soluble, dispersible or miscible polymer, and water in an amount sufficient to rehydrate the hydraulic binder, the composition having hardened to form the encapsulating layer.</p> |
