Abstract: The method consists of the formation of a layer over a stone substrate to increase its hardness, chemical resistance, wear and scratch resistance, comprising applying on the substrate a coating matrix incorporating an organic material and fillers including inorganic nanoparticles and/or microparticles; chemically binding said matrix to the substrate, by a self-assembly process and/or a binding process by covalent bonding, electrostatic bonding, van der Waals bonding or hydrogen bonds; and finally drying said matrix. The mentioned organic material is selected from organosilanes, organophosphates, polycarboxylic compounds, compounds based on triazine heterocycles and said nanoparticles are nanoparticles of oxides, carbides, borides, nitrides of metals or of semimetals.

Abstract: A coating having a thickness between 0.1 and 2 mm is obtained from a mixture with the following composition: 10-25% by weight of micronized powder; 40-60% by weight of inorganic gravels of petrographic origin of sizes comprised between 0.063-2 mm; 10-40% by weight of a polymerisable base resin selected from polyurethane, polyester, epoxy or acrylic, with additives, and optionally pigments. The proportion of the mentioned gravel and micronized powder of the coating being up to 90% in an inner most area of interphase between coating and surface of the petrous substrate, covering one third of the thickness of the coating. The method comprises depositing the mentioned mixture on the substrate and vibrating the assembly, and subsequently proceeding to a step of curing and subsequent mechanical finishing of the surface.

Abstract: Reinforced natural or conglomerate stone plate-like element and multilayered protective coating that includes a substrate of natural or conglomerated stone material and a multi-layered coating providing protection of the substrate against chemical and wearing mechanical agents acting on the element. The multi-layered coating includes three single or multiple film forming composition layers.

Abstract: A system for a floor covering that includes covering panels (10A, 10B) made of a hard material, having relatively little thickness (e), with upper and lower surfaces (1a, 2a; 1b, 2b), perimetral edges (3a, 3b) and recesses (4a, 4b), and attachment parts (20) made of a relatively flexible material and having projecting members (21a, 21b) and spacing members (22a, 22b). In practice, the projecting members (21a, 21b) of the attachment parts are introduced in the recesses (4a, 4b) of the covering panels (10A, 10B) assuring the link between covering panels (10A, 10B), and the spacing members (22a, 22b) of the attachment parts (20) remain between the facing edges (3a, 3b) of the covering panels (10A, 10B) filling a gap (G) between them in the form of a joint.

Abstract: A coating having a thickness between 0.1 and 2 mm is obtained from a mixture with the following composition: 10-25% by weight of micronized powder; 40-60% by weight of inorganic gravels of petrographic origin of sizes between 0.063-2 mm; 10-40% by weight of a polymerisable base resin selected from polyurethane, polyester, epoxy or acrylic, with additives, and optionally pigments. The proportion of the mentioned gravel and micronized powder of the coating being up to 90% in an inner most area of interphase between coating and surface of the petrous substrate, covering one third of the thickness of the coating. The method includes depositing the mentioned mixture on the substrate and vibrating the assembly, and subsequently proceeding to a step of curing and subsequent mechanical finishing of the surface.

Abstract: A system for a floor covering that includes covering panels (10A, 10B) made of a hard material, having relatively little thickness (e), with upper and lower surfaces (1a, 2a; 1b, 2b), perimetral edges (3a, 3b) and recesses (4a, 4b), and attachment parts (20) made of a relatively flexible material and having projecting members (21a, 21b) and spacing members (22a, 22b). In practice, the projecting members (21a, 21b) of the attachment parts are introduced in the recesses (4a, 4b) of the covering panels (10A, 10B) assuring the link between covering panels (10A, 10B), and the spacing members (22a, 22b) of the attachment parts (20) remain between the facing edges (3a, 3b) of the covering panels (10A, 10B) filling a gap (G) between them in the form of a joint.

Abstract: Reinforced natural or conglomerate stone plate-like element comprising: a substrate (1) of natural or conglomerate stone material; a multi-layered coating providing protection of said substrate (1) against chemical and wearing mechanical agents acting on the element, said multi-layered coating comprising three single or multiple film forming composition layers.