| 摘要 |
<p>A dry mix suitable for making a building unit comprising, by dry weight, 20 to 50% sawdust, 30 to 50% cement and 5 to 20% lime (calcium oxide). In a preferred form, amounts of up to 1% glue may be also be added to the mix. The resulting building unit may be formed into building blocks of preferred sizes 600mm x 300mm x 100mm or 600mm x 200mm x 100mm. These building blocks when manufactured into their final form have improved fire insulation, acoustic insulation and compression properties.</p> |
