| 摘要 |
The invention relates to a material for constituting ground coverings, particularly for playing surfaces or the like, especially for rugby pitches or bowling surfaces, comprising the following constituents: schist, 75 to 20% by weight 0.4 silica, 10 to 78% by weight fine granular composite 2 to 15% by weight and, during its preparation for laying, it furthermore comprises 0 to 15% of water. n
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