| 摘要 |
<p>A lower layer (30) comprising a hardenable mixture including particles obtained from broken natural stone, with a particle size greater than 0.5 mm. The lower layer includes pores. An upper layer (20) comprises a second hardenable mixture of particles obtained from broken natural stone, with a precious surface such as granite, marble or porphyry. The surface layer includes pores, and is at least 8 mm thick, being thinner than the lower layer. After hardening the surface of the upper layer is sandblasted so that the particles are clearly revealed.</p> |
