| 摘要 |
<p>Compositions include a particulate filler such as pulverised fuel ash, cellulose fibres such as are obtained from waste paper, and optionally a cementitious binder such as Portland cement or gypsum. An emulsifier such as a non-ionic surfactant may be added. Numerous uses for the compositions as building blocks, cladding materials, plant growth media, modelling clay etc. are specified.</p> |
