| 摘要 |
<p>The body (1) of the slab is fitted on one of its edges with one cylindrical extension and on the other edge with two similar cylindrical elements (6) with a gap (7) between them. The rest of the edge length is formed as a concave groove (12) of a radius corresponding to the radius of the cylindrical element which fits into it, when two adjacent slabs are put together. Each of the cylindrical elements (6) is provided with an axial hole (11) through which a steel rod is inserted when the slabs are fitted in position.</p> |
