| 摘要 |
<p>A building block composition, a building unit and a method of making same. A building block composition to the invention comprises by dry weight: sawdust (20-70 %), cement (20-50 %), plaster or lime (5-20 %). A building block is made from this composition by adding an appropriate amount of water and, in some embodiments, a predetermined amount of glue. In one form of the invention fresh sawdust is used.</p> |
