| 摘要 |
<p>A masonry block (10), cast in a mould and compacted by a "gravity impact method" has one or more core holes (14) surrounded at one end by a rim (15) and at the other end by a socket (20), the rims (15) and sockets (20) having tapered walls (16) which form a line of contact to prevent ingress of water into the blocks by capillary means. The blocks are laid in bond so that each block in a course overlies, and engages, at least two blocks in the course below it.</p> |
