| 摘要 |
<p>A composite material particularly suitable for use as a modelling material, comprises at least first and second components, wherein the first component comprises a substantially cellulosic material, and wherein the second component comprises, at least, calcium oxide, or calcium hydroxide, or a compound sold commercially as tile grout or a combination of two or more of the above. The composite material is particularly effective when a mixture of sawdust and tile grout is used, water being added to the material to produce a wet mixture which may be processed and allowed to dry to give a final product. By altering the relevant quantities of the first and second components, the hardness of the final product may be varied.</p> |
