| 摘要 |
A method of producing a resilient decorative construction material from waste products such as slag granulate or waste glass granulate is taught. A layer of material (10) comprising glass granulate, slag granulate, or sand, or mixtures thereof, is placed in a heat-resistant mold (12). The mold (12) has a top (22), sides (24) and a bottom (20) which is preferably coated on the inner mold surface (18) with a fluid suspension of kaolin (13). The layer is thermally treated, and is initially heated so that a temperature gradient is established throughout the layer, with the first surface (14) having a first temperature no greater than the softening point, and the second surface (16) having a second temperature less than the first temperature. Then further heating is conducted to a temperature sufficient to sinter the layer, and also to reverse the temperature gradient throughout the layer, so that the first surface (14) has a lower temperature than the second surface (16). The layer is maintained at temperature and then cooled annealed to produce the final product.
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