| 摘要 |
- Substrate intended for producing turfed surfaces, especially for playgrounds, sports grounds, lawns for recreational walking, etc., and characterised in that it consists on the one hand, of river sand and, on the other hand, of a stabilisation element in pulverulent form and including particles of irregular shape, having frictional forces greater than those of the sand, this stabilisation element incorporated with the sand consists of crushed rock, in particular eruptive (igneous) or volcanic rock, such as pozzolana, and including particles with a grain size smaller than 3 millimetres. <IMAGE>
|
