| 摘要 |
Concrete blocks are formed in a mold having a cavity into which block-forming material is placed. A portion of the material is retained in place relative to the cavity walls when the block is removed from the cavity, and the face of the block forming material adjacent a surface of the material retained in place is provided with a split-type appearance to its surface. A block having a rough surface closely resembling a split surface can thus be attained without the expense and time involved in conventional block splitting. The assembly can be constructed to form blocks having non-planar split-type surfaces. Additionally, split-type surfaces can be formed on an interior surface of a composite block module adapted for splitting along a splitting plane, to attain a block providing a split-type appearance along two spaced planes.
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