DE102009043662A1 - Partially light permeable stone plate comprises light permeable, massive glass bodies, which are arranged from plate front-side to plate back-side, where the interfaces of the glass body are provided with a light-reflective coating - Google Patents

Abstract

The partially light permeable stone plate (A) comprises light permeable, massive glass bodies (B), which are arranged from plate front-side to plate back-side, where the interfaces of the glass body are provided with a light-reflective coating at stone-side and the external surface of the glass body is formed in plane or smooth or refractive manner. The surface portion of the glass body is 5-50% of the total surface of the plate on both sides of the plate, and the plate surface on front- and back side of each individual light-permeable glass body on both sides is 50-10000 mm 2>. The partially light permeable stone plate (A) comprises light permeable, massive glass bodies (B), which are arranged from plate front-side to plate back-side, where the interfaces of the glass body are provided with a light-reflective coating at stone-side and the external surface of the glass body is formed in plane or smooth or refractive manner. The surface portion of the light permeable glass body is 5-50% of the total surface of the plate on both sides of the plate, and the plate surface on front- and back side of each individual light-permeable glass body on both sides is 50-10000 mm 2>. The light-permeable glass bodies are formed in its stone-side limitation of round, elliptical or polygonal or arrows, letter or pictographic symbols. The glass body has uniform or different form and size, are arranged in the plate in the form of pattern and consist of color-less transparent or colored, toned, translucent massive glass. The glass bodies are coated on its interference with a light-stable artificial resin, which is filled with titanium dioxide-coated and/or uncoated mica flakes and/or rubber-based effect pigment and has light reflection properties. The front- and back side of the plate are plane and are polished or shaped through shot peening, and are coated with color-less transparent and/or colored, toned or transparent color-coated glass particles, where the color-less or colored, toned, high transparent and light stable artificial resin system serves as coating matrix. The glass particle exists as glass granulates or as round or oval glass micro-spheres. The plate is a cementitious, concrete stone plate, which consists of natural stone-loadings (less than 2 mm) in fine aggregate fractions and natural stone-loadings (greater than 2 mm) in coarse aggregate fractions and/or loadings of coated glass granulate, coated mirror glass granulate or with glass granulate coated with effect pigment. The stone plate is polymerically bounded. The particle size of the glass particle is 1-8 mm or the thickness of the artificial resin coating matrix is 20-50% of the average grain size. A reaction-hardened, pigmented, epoxide resin system or a reaction hardened, crystal-clear or pigmented aliphatic polyurethane-resin system serves as binder.

Description

object

The request for protection pertains to partially or selectively light-permeable cementitiously or polymer-bound stone slabs with a relatively monochrome or high-contrast terrazzo-like structure and surface appearance. In contrast to known cementitious or polymer-bound concrete or polymer workstones, however, these panels not only contain additives which consist of a technically meaningful grading curve of fine, medium-fine and coarse grain sizes. In addition, they also contain oversized transparent glass bodies extending from the front of the plate to the back of the plate, which allow light to flow from one side to the other on the block of stone. The stone is thus, as soon as a light source acts from one side of the plate, at the same time a filament.

The protection also concerns the technical solutions to make the light flow through light-scattering conditioning of the surfaces on the bottom or the back of the stored glass body as well as light-reflecting coating of the workpiece side boundary surfaces of the glass body as intense and visually attractive.

background

Light, a building block of the cosmos, has always exerted a metaphysical fascination on man and has influenced the cultural development of homo sapiens in all phases. Of course, this also applies to the history of architecture - from prehistoric sun-worship sites to the broken structures of Gothic cathedrals, the London Crystal Palace of 1851, the triumph of the glass block in the aftermath of the Bauhaus Revolution, today's steel + glass palaces, and sophisticated lighting technology Indoor and outdoor modern administrative consumption and residential temple.

Differentiation to the state of the art

Relatively young (ie only a few decades old) achievements of lighting technology are halogen spotlights and LED lights. In interior design, halogen or LED spotlights are preferably distributed in larger numbers than point sources of light over a ceiling and thus create the illusion of a starry sky in a certain way. More and more frequently, light outlets in the form of flush-mounted and walk-in luminaires are integrated into floors - and not only where it appears necessary for safety reasons, but very often for the sake of the optical effect alone.

The present invention - partially translucent stone slabs - to provide a technically, economically and aesthetically advantageous alternative to such installed in ceiling, wall or floor panels and interconnected Lichtstrahlersystemen: These are plate-shaped components made of concrete or polymer concrete, in which the light outlets in the form of translucent solid glass bodies represent a directly integrated into the building material component. An essential aspect relevant to the invention is also that in this case no longer every light outlet of its own light source (lamp) is required but that with a single light source numerous light outlets can be supplied with light.

The partially translucent stone panels of the invention are therefore more comparable to the invented by Hungarian architect Aron Losonczy 2001 translucent concrete (Litracon ^®). In this material system countless optical fiber strands are embedded in a matrix of fine concrete in a very dense, filigree arrangement. The production of translucent concrete elements formed in this way, however, is technically rather complex, the products are correspondingly expensive and therefore in the context of larger architectural objects so far (as of July 2009) planned but not yet realized.

From the Litracon patent, the partially translucent block of stone disclosed here differs in that the translucent parts are not filigree and very close to each other but large-sized-compact and arranged at relatively large distances from each other in the stone. The translucency is not caused by embedded glass fiber optical fibers but by rather large solid glass bodies - preferably from recycled glass - which extend from the front to the back of the slab. In contrast to the optical glass fibers in the Litracon ^® these large-sized glass body not only in fine concrete but also in coarse grain containing concrete or polymer concrete -. B. with aggregates up to 15 mm grain size - be embedded. This results in a terrazzo-like appearance when the visible surface of the stone slab is ground.

A primary feature of the inventive stone slabs is therefore initially that relatively large, from the front plate to the back of the plate reaching, light-transmitting, solid glass body are embedded in these plates. The surface portion of the embedded glass body on both sides of the plate can be between 5% and 70% of the Total surface of the plate amount. The surface area of each individual translucent glass body, which is visible on both sides of the plate and perceptible by the eye of the observer, may be between 50 mm ² and 10,000 mm ² .

In an optically very attractive and cost-effective - and therefore preferred - embodiment of the partially translucent block of stone according to the invention, the embedded glass body from crushed raw glass chunks are formed, which are incurred at each outbreak in the glassworks. These fragments are completely irregular in shape - each one is a unique one - and come in different sizes. For example (with a thickness of the stone plate of, for example, 15-25 mm) in volume sizes of 1000 mm ³ to 250000 mm ³ .

Depending on the wishes of the architect or designer, these solid glass bodies can be embedded in the stone plate in a well-ordered pattern or in an irregular pattern or in a purely random placement.

If desired, however, the embedded glass bodies can also be geometrically regularly shaped, for example round, elliptical or polygonal. In this case, correspondingly shaped solid bodies made of glass are used in the production of the slab according to the invention. However, their deployment is more costly than the so-called "tub break". Naturally, all stress-relieved glass types with sufficient light transmission properties are suitable for use in these slabs, whether in a colorless or in a color-toned version or in a mixture of colorless and / or colored solid glass bodies.

An essential feature of the partially translucent block of stone according to the invention is that the factory-side boundary surfaces of the embedded solid glass body are provided with a light-reflecting coating. This has the effect that even from an acute angle incident light from the light incident surface is reflected by the factory-side boundary surfaces of the solid glass body to a high degree and directed in the direction of the light failure surface. Of particular importance is this reflector layer when using irregularly shaped solid glass bodies of crushed Rohglasbrocken. An independently of the intensity of the incident light optically advantageous sibrig-white shimmering reflector layer is achieved by the Werksteinseitigen interfaces of the embedded solid glass body with a light-stable, silanized resin - preferably a reaction-cured epoxy resin system - are coated with titanium dioxide-coated and / or uncoated and mixed with titanium dioxide pigment mica flakes and / or other mica-based effect pigment is filled.

Of particular importance for the optical properties of the partially translucent stone slabs according to the invention is the nature of the slab surfaces. This in turn depends on the intended use of the plates:
For example, in the case of panels illuminated with artificial light, which are to be used as double-bottomed elements mounted on stilts or as elements for counter construction or wall coverings, the visible front side (= light outlet side) is preferably ground and polished to a high gloss or silk gloss.
The invisible back (= light inlet side), however, is preferably only roughly ground and coated with a "carpet" of colorless transparent and / or colored or transparent color coated glass particles. The binder used for such a coating is a (preferably silanized and reaction-cured) colorless or color-tinted, highly transparent and light-stable synthetic resin system, for. For example, an aliphatic polyurethane resin system.
This glass particle "carpet" on the light inlet side causes a visually very interesting refraction and directional distribution of the incident light. The glass particles may be in the form of irregularly broken glass chips or as round or oval glass beads. The grain size of the glass particles depends on the desired light refraction effect and is on average at least 1 mm and at most 6 mm. The thickness of the synthetic resin coating matrix is at least 20% and at most 60% of the mean grain size of the applied glass particles.

On the other hand, with single-shell partition constructions, it may be desirable for the stone slabs to be partially transparent (transparent) and not only translucent: it should not only penetrate light from one room part into the other but also - at least in fragments - recognize what is going on in the other part of the room. In this case, according to the invention stone slabs are used, which are ground on both sides and polished to satin gloss or high gloss.

In other applications - especially in the outdoor area - it is required that the partially translucent plate surface should be designed plan but natural stone rough. For such cases, inventive stone slabs are suitable, the visible surface (s) only coarsely ground and then - for example, by shot peening - are roughened to a brittle-like surface texture.

Another essential feature of the invention is that the partially translucent stone slabs can be designed either as cementitiously bound concrete slabs or as bonded with reaction resin polymer concrete slabs.

• a) Der innen liegende Bereich der Kunstharzbeschichtung (in diesem Falle stark lichtreflektierend gestaltet) ist über die enthaltenen Silan- bzw. Siloxanmoleküle chemoreaktiv an die werksteinseitigen Oberflächen des Massivglaskörpers gebunden.
• b) Das Beschichtungsharz ist mit (sehr hellen und nahezu transparenten) Muskovit-Glimmerschuppen angereichert. Der so gebildete „Panzer” aus einander überlagernden Schuppen bildet eine wirksame Sperrschicht: Sie verhindert, dass alkalische Einflüsse aus der zementösen Matrix des Betonwerksteins bis auf die gläsernen Oberflächen der lichtdurchlässigen Massivglaskörper vordringen können. Sie verhindert somit eine bei Durchfeuchtung der Zementmatrix an diesen Oberflächen drohende Alkali-Kieselsäure-Reaktion, die zu weissen Ausblühungen von Alkalicarbonaten + Kieselsäure und letztlich zu einer progressiven Schädigung des Verbundes zwischen den eingebetteten Massivglaskörpern und dem sie umgebenden Betonwerkstein führen würde.
• c) Der außen liegende Bereich der Kunstharzschicht auf den werksteinseitigen Kontaktflächen der eingebetteten Massivglaskörper ist im Zuge des Beschichtungsprozesses mit einem Gemisch aus Zementpulver und feinem Quarzsand abgepudert, sodass sich auch ein starker Verbund zwischen den organisch beschichteten Glaskörpern und dem hydraulisch reagierenden Zementmörtel des Betonwerksteins ergibt.

In the case of embedding the translucent solid glass body in cement-bound concrete these are "trivalent" coated according to the invention. The "trivalent coating" combines three functions:

• a) The inner region of the synthetic resin coating (designed to be highly light-reflecting in this case) is chemoreactively bound to the sides of the solid glass body via the silane or siloxane molecules contained.
• b) The coating resin is enriched with (very light and almost transparent) muscovite mica flakes. The so-formed "shell" of overlapping scales forms an effective barrier layer: It prevents that alkaline influences from the cementitious matrix of the concrete block can penetrate to the glass surfaces of the translucent solid glass body. It thus prevents an imminent dampening of the cement matrix at these surfaces threatening alkali-silica reaction, which would lead to white efflorescence of alkali metal carbonates + silica and ultimately to a progressive damage to the bond between the embedded solid glass bodies and the surrounding concrete block.
• c) The outer region of the synthetic resin layer on the factory-side contact surfaces of the embedded solid glass body is powdered in the course of the coating process with a mixture of cement powder and fine quartz sand, so that there is also a strong bond between the organically coated glass bodies and the hydraulically reactive cement mortar of the concrete block.

The "trivalent coating" thus forms a two-sided effective bonding (to the glass body on the one hand and to the cement matrix on the other side) and prevents (by the contained "mica scale armor) at the same time the harmful alkali-silica reaction.

As a matrix former for cementitious slabs according to the invention are modern, self-compacting and self-venting high-performance concrete systems such. B. Dyckerhoff Flowstone ^® particularly suitable: due to their high mechanical strength they allow a relatively thin design of the slab according to the invention. Natural aggregate sand or granules are used as aggregates in the fine grain range <2 mm, in the coarse grain range (eg 2-8 mm) natural stone chips and / or aggregates of trivalent color-coated or effect-coated glass and / or mirror glass granules.

In the case of incorporation of the translucent solid glass body in polymer bound stone matrix, the factory boundary surfaces of the solid glass body according to the invention with a light-stable, silanized resin - preferably a reaction-cured epoxy resin - coated with titanium dioxide-coated and / or uncoated and titanium dioxide pigment added with muscovite Mica flakes and / or other mica-based effect pigment is filled. The combination of mica and very light pigment causes the required light-reflecting property of the factory-facing boundary surfaces of the solid glass body.

Reaction-cured pigmented or colored epoxy resin systems or reaction-cured clear or pigmented or dyed aliphatic polyurethane resin systems are preferably used as matrix formers for polymer bound partially translucent stone slabs according to the invention.

The inorganic aggregates of the stone slabs may consist of natural stone and / or of colorless and / or colored glass powder or glass granules and / or color-coated or with effect pigment-coated glass or also mirror glass granules.

uses

The partially translucent blocks of stone according to the invention are used in conjunction with natural or artificial light sources as components for double floor systems supported on stilts, as elements for exhibition stand construction, table, counter and staircase construction, for parapet and base constructions, dividing wall, partition wall and false ceiling systems, for interior wall and exterior wall cladding, as components in church construction and for objects in gardening and landscaping, in well and monument construction and in other objects of the "furnishing" of public areas and spaces usable.

drawings

The accompanying drawings are intended to be - without any claim to a comprehensive representation of the various possible embodiments - the principal Understanding the invention and its essential features serve:

1 shows a perspective view of a cementitious or polymer bound stone tablet (A), in which relatively large, from the front of the plate to the back of the plate reaching, light-transmitting, solid glass body (B) are embedded. These glass bodies (B) may consist of colorless transparent or of color-tinted or opaline glass.

2 shows in perspective view a light-transmitting solid glass body (B), which was made from a raw glass fragment. The front (B1) and the back (B2) are designed parallel by a post-processing.

The factory-side boundary surfaces (B3) are irregularly shaped like bricks and light-reflecting coated. This reflector coating consists of a light-resistant synthetic resin, which is filled with titanium dioxide-coated and / or uncoated mica flakes and titanium dioxide as a powder pigment and / or with other mica-based effect pigment.

3 shows some examples of solid glass body (B), in which the front and the back are also designed in parallel plan. Unlike the in 2 shown example, the factory-side boundary surfaces are designed here in a targeted geometric form or as arrows, letters or pictographic symbols.

4 illustrates in a plan view of the plate surface, the possibility of arranging the light-transmitting solid glass body (B) embedded in the stone (A) in a relatively even distribution or in a disordered placement. The surface area of the embedded glass bodies (B) on both sides of the plate may be between 5% and 50% of the total surface area of the plate. The surface area of each individual translucent glass body (B) may be between 50 mm ² and 10000 mm ² on the front and on the back.

5A shows a section through a portion of a stone slab (A), in which a light-transmitting glass body (B) is embedded. While the surface of the top (A / B1) - = "light outlet side" - is polished and polished to shine, the bottom (A / B2) - = "light inlet side" is only roughly ground and provided with a refractive coating. This coating consists of a highly transparent colorless or slightly tinted, light-stable synthetic resin layer (C), which is provided with a "carpet" of colorless-transparent and / or color-tinted or transparent color-coated glass particles (D).

This glass particle "carpet" on the light inlet side causes a visually very interesting refraction and directional distribution of the incoming light. The glass particles may be in the form of irregularly broken glass chips or as round or oval glass beads. The grain size of the glass particles depends on the desired light refraction effect and is on average at least 1 mm and at most 6 mm. The thickness of the synthetic resin coating matrix is at least 20% and at most 60% of the average particle size of the applied glass particles.

5B also shows a section through a portion of a stone slab (A), in which a sealing continuous glass body (B) is embedded. In the present case, however, the surfaces of both the light outlet side (A / B1) and the light inlet side (A / B2) are finely ground and polished to shine. This results in a not only translucent but transparent property of the embedded glass body (B) and thus a "keyhole effect".

6 shows in a highly simplified representation of the use of a stone slab according to the invention as a backlit raised floor element. The plate itself is basically constructed as in 5A that is, the light outlet side (A / B1) is finely polished and polished, the light inlet side (A / B2) is coated with a carpet of glass particles (C, D). The stone slab is supported on distance-maintaining stilts (E), which at the same time for receiving light emitters -. B. fluorescent lamps - serve. The surface of the subfloor (H) and also the vertical wall terminations of the cavity are light-reflecting - for example with profiled aluminum foil - lined (G) in order to direct as much light on the light inlet side.

Examples:

In the following, some typical application possibilities of the partially translucent stone slabs according to the invention are described briefly without any claim to completeness:

Example A: Backlit raised floor.

For an architect, a backlit double floor area was designed. A height-adjustable pedestal storage system with translucent stilts made of polycarbonate was chosen for the support. At the same time, these stilts served as a holder for light sources which were directed slightly upwards at a slight angle. The height of the stilts was set to 120 mm. The subsoil was filled with light reflective aluminum foil designed. The format of the partially opaque stone tiles stored on the stilts was 800 × 800 × 20 mm. Due to the required bending tensile strength, a reaction-hardening pigmented and low-yellowing epoxy resin system was chosen as the matrix former for the stone slabs. The aggregates consisted of a grading curve of recycled glass grains, with the fine grained area of 0-2 mm consisting of silanized clear glass and the coarse grain area of 2-8 mm consisting of color-coated clear glass, in some cases color-coated mirror glass breakage. In each of these Polymerwerksteinplatten about 60 massive, from the top of the plate to the underside of the plate reaching clear glass body were stored, which were formed from irregularly shaped glass fragments. The surface size of the horizontally parallel plane cut clear glass body was on the Lichtauslass- as on the Lichteinlass side between 250 and 1200 mm ² . The completely irregular shaped factory-side boundary surfaces of the stored glass body were coated reflecting light. The top of the plate was finely ground and polished to a high degree of gloss. The underside of the slab was roughly ground and coated with a "carpet" of small clear glass fragments of 1.5-4 mm size.

The coating binder used was a highly transparent aliphatic polyurethane resin.

Example B: Room divider with transparency zones

For a large-capacity office with public access, large-format semi-transparent room divider elements should be designed, which combine the moment of discretion with that of transparency. The company developed large-format and relatively thin-walled (20 mm) slabs of high-performance, high-performance concrete in which triangular semi-transparent segments are integrated. In these segments - in geometrically regular and relatively dense arrangement - numerous round "glass eyes" are incorporated. The glass bodies to be stored were formed from colorless transparent raw glass rods, which were sawn into sections of the same length and provided with a light-reflecting trivalent coating. Self-compacting high-performance concrete Dyckerhoff Flowstone ^® , which was filled with fine grain aggregates (0.5-2 mm) of light marble, was used as the ^raw material for the stone.

The semi-transparent room divider elements were ground on both sides and polished to a high degree of gloss in order to achieve high transparency of the "glass eyes".

Example C: Counter for a cocktail bar

The counter of a cocktail bar was to be constructed of polished exposed concrete elements, with numerous differently sized translucent glass bodies in irregular distribution integrated into both the horizontal top panel and the vertical front panels. The base material was anthracite gray pigmented high-performance concrete "Dyckerhoff Flowstone ^(R) ", the embedded glass bodies consisted of tivalent coated colorless raw glass fragments.

The use or visible surfaces of the counter elements were polished to a high gloss and impregnated (hydrophobic). The inside surfaces were only roughly ground and coated with a "carpet" of small turquoise, blue and green colored glass fragments of 2-4 mm size. The light source for the backlighting of the elements was a system of 15 energy-saving lamps with a power consumption of 7 watts each.

Example D: fountain with sculpture

As the base for an admonishing fountain sculpture on the topic of "climate change", the artist wanted a floating hollow body that makes one think of a melting ice floe. According to the artist's ideas, the sculpture itself was supposed to represent a human hand, from whose fingertips water swells.

For the realization of the floe, the artist proposed a plate-shaped element according to the invention consisting of floatable hollow bodies of thin-walled white exposed concrete in the form of an ice floe, which in turn floats in a fountain basin. The surface of the plume top is about 2 m ² , the plan underside about 2.5 m ² , both surfaces in irregular polygonal and staggered shape. Both in the horizontal cover plate as well as in the formed from numerous plates lateral "Schollenabbruch" surfaces are stored in irregular arrangement massive glass fragments of transparent cullet in sizes between 5000 and 50,000 mm ³ . The outer sides of the horizontal cover plate and the lateral "lug break" surfaces are only roughly ground and then shot peened, so that there is a rough surface. Invisible to the viewer inner sides (backs) of the cover plate and the side plates are - as described in Examples A and C - roughly ground and coated with a "carpet" of small glass fragments of 1.5 to 4 mm size.

However, the coating binder used here is a transparent and slightly orange-tinted aliphatic polyurethane resin. As glass particles red and yellow tinted transparent glass is used: This causes the stored glass body - after activation of the light sources in the interior of the floating floe - act like fiery, sweaty pores, which are a striking contrast to the cold-acting surface color of the floe.

Example E: Balcony screens

For the continuous balconies of an apartment house, paravent-like side partitions made of bright, high-performance concrete were designed, which on the one hand provide sufficient privacy, but on the other hand should also let in natural light. The components contained numerous solid glass bodies coated trivalent at the factory boundary surfaces. They were coarsely ground on both sides and then shot peened, so that they are lichtdruchlässig but not transparent.

Claims (14)

Partially translucent stone slabs, characterized in that in these plates relatively large, from the plate front to the back of the plate reaching, translucent, massive glass body are incorporated, the factory-side boundary surfaces are provided with a light-reflecting coating and the front and back outer surfaces plan and smooth or plan and refractive rough designed. Workstone slabs according to claim 1, characterized in that the surface portion of the embedded translucent glass bodies on both sides of the slab is between 5% and 50% of the total surface area of the slab and that the planar surfaces on the front and back of each individual translucent glass body are on both sides between 50 mm ² and 10000 mm ² . Work stone slabs according to one of claims 1 or 2, characterized in that the embedded translucent glass bodies are shaped like bricks in irregular irregular or geometrically regular shapes - preferably round, elliptical or polygonal or also as arrows, letters or pictographic symbols. Work stone slabs according to one of claims 1-3, characterized in that the embedded translucent glass body uniform or different shape and size and are arranged in the stone slab according to purposefully arranged pattern or according to selectively irregular pattern or in purely random placement. Work stone slabs according to any one of claims 1-4, characterized in that the embedded translucent glass body made of colorless transparent or colored tinted translucent solid glass. Stone slabs according to one of claims 1-5, characterized in that the embedded translucent glass body are coated on their factory-side boundary surfaces with a light-resistant resin, which is filled with titanium dioxide-coated and / or uncoated mica flakes and / or other mica-based effect pigment and characterized pronounced light reflection properties. Stone slabs according to one of claims 1-6, characterized in that the front or top of each plate ground flat and dull or shiny polished or - z. B. by shot peening - refractive rough designed. Stone slabs according to one of claims 1-7, characterized in that the rear or underside of each plate ground flat and dull or shiny polished or - z. B. by shot peening - refractive rough designed. Stone slabs according to any one of claims 1-7, characterized in that the back and bottom of each plate ground flat and coated with colorless transparent and / or colored or transparent color coated glass particles, wherein a (preferably reaction-hardened) colorless or color tinted highly transparent and light-stable resin system serves as a coating matrix. Work stone slabs according to claim 9, characterized in that the glass particles applied to the back of the slab are present as geometrically irregularly broken glass granules or as round or oval glass spheres. Workstone slabs according to either of claims 9 or 10, characterized in that the grain size of the glass particles applied to the slab backing surface is on average at least 1 mm and at most 8 mm, and the thickness of the synthetic resin coating matrix is at least 20% and at most 50% of the average grain size. Work stone slabs according to one of claims 1-11, characterized in that the slab is a cementitious bonded concrete slab, which in the fine grain <2 mm natural stone aggregates and in the coarse grain> 2 mm Natural stone aggregates and / or aggregates of color-coated glass granules, coated mirror glass granules or glass granules coated with iridescent or luminescent effect pigments. Stone slabs according to one of claims 1-11, characterized in that the slab is polymer bound, wherein a reaction-hardened pigmented epoxy resin system or a reaction-hardened glassy or pigmented aliphatic polyurethane resin system serves as a binder and the aggregates of natural stone and / or of colorless and / or colored glass flour or glass granules and / or colored coated or coated with effect pigment glass or mirror glass granules. Use of partially translucent stone slabs according to claims 1-13 in connection with natural or artificial light sources as components for double floor systems mounted on stilts, as elements for exhibition stand construction, table, counter and staircase construction, for parapet and base constructions, Partition wall, partition wall and false ceiling systems, for interior wall and exterior wall cladding, as components in church construction as well as for gardening and landscaping, in well and monument construction and in other objects for the "furnishing" of public areas and rooms.

Images