BE1020502A3 - METHOD FOR MANUFACTURING A REFLECTIVE BUILDING ELEMENT. - Google Patents

Description

Method before ..... "manufacturing a reflective. Building element.

The current. The invention relates to a method for manufacturing a reflective building element.

The reflective 'building element' can, for example, be a reflective one. paving element such as one.

reflective concrete clinker or reflective embroidery.

Although further 'reference is made primarily to a concrete clinker,. it is clear .that: the reflective, building element can be any building element ....... that is used as a part or building block of a, speed bumps. or. roads and motorways and / or in private infrastructure works.

The reflective building element can be a prefabricated building element or can be manufactured on site at the site.

The reflective component can also be made from plastic.

An existing method ......... for .... .the production of a concrete vowel to be emphasized visually consists in starting from a conventional building element, and providing this building element with a white or colored layer , usually after placement.

A known method is more particularly in glass beads. or sprinkle micro-glass beads on a newly applied paint layer. "

Such micro-glass beads are spherical and transparent particles intended '......... to ensure the ........... night visibility' of road markings by retro-reflecting the incident light beams from the vehicle lights to the driver.

A glass bead which is 60% submerged in the paint and 40% protrudes above the paint is regarded as an ideally applied glass bead.

Mixtures of microglass beads and non-slip grains are often provided on the road markings.

A disadvantage of this known method is that it requires a lot of work and that the adhesion of the reflective layer with the structural element has limitations.

Another known method for manufacturing a concrete clinker to be emphasized visually is to provide a mold, one. to provide a wet or moist mixture, which mixture contains stone grit, for example white marble stone grit, water and cement, for example white cement, and sand, and then to supplement the mold with concrete which is then vibrated or pressed.

A ...... disadvantage ...... fyan ______. This ...... well-known ...... "method., .Is .: that. the reflective properties are limited.

The present invention has for its object to provide a solution to one or more of the aforementioned and other disadvantages and / or to provide an alternative method for manufacturing a reflective building element.

• To this end ..... the ........ current invention relates to a method for manufacturing a reflective building element which, starting from a mold or the similar > ....... comprises the steps of providing a substantially unbound or so-called dry layer comprising reflective particles, providing a binding layer or so-called wet layer thereon and applying the material to it structurally. part of the component.

According to a practical embodiment variant, this method comprises of. manufacturing a reflective building element which, starting from a mold or the like, comprises the steps of providing a substantially dry layer. glass beads. thereafter ..... provided with a wet mixture comprising at least cement, water, and sand and / or aggregate and / or other granular material, and the application of the concrete or the plastic or other material which is the structural component of the component.

According to a preferred embodiment, the dry layer also contains non-skidding particles or non-skidding agents, so that "the dry layer" contains between 70% and 80% glass beads and between 30% and 20% non-skidding particles or abrasion aids, for example.

A practical composition for the dry layer is a mixture of three ..... yumplum particles and glass beads ..... with diameters between 125 µm and 850 µm and if necessary larger, and one part by volume of broken glass particles with largest diameter located between 250 pm and 850 μπν as a skid resistance.

According to a preferred embodiment variant, the wet layer also comprises glass beads and / or. non-fouling particles or • non-fouling agents ........................ "" "....... ~ .......... ..............

By dry ...... layer of glass beads, -... possibly- - mixed with skid resistance articles or skid resistance means a layer of such particles, which, without binder or less than 50% of the amount of binder provided in the wet layer.

An important advantage that is obtained by applying the method according to the invention is that the glass beads. which provide an optimum retro-reflective capacity, thanks to the essentially dry application, provide an immediate effect after its production ....... ...........-...... .....-..... -— ....... · · ----

Indeed, the hopefully dry layer will be partially permeated by the binder, in the practical embodiment by the wet or damp applied layer wherein the cement and water or any other binder act as a binder;

The dry glass beads are bound, but a large 'part of' the 'Vgë'bbhdën ....... glass beads' retain an uncoated side.

A glass bead which is 60% sunk in the binding mass and 40% protrudes above it is regarded as an ideally applied .glass bead.

There will of course be a division in the degree of galvanizing in the binding mass. A large amount of glass beads will even be non-bonded and will be recovered after removal of the component from the mold.

A possible post-processing can loosen the. Limited bonded glass beads for reuse.

According to a preferred embodiment, the dry layer of glass beads is applied in a layer thickness of 1 to 2 millimeters, while the layer of the wet mixture shows, for example, a thickness of 10 millimeters.

The concrete or plastic or other material that constitutes the structural part of the building element preferably has a color that is adapted to the intended appearance and composition of the wet layer.

The wet layer may comprise, for example, four volumes of white cement, one volume of white sand, two volumes of water or as required, and optionally also one volume of titanium dioxide if an intense white color is envisaged. ..

As stated earlier, the wet layer can also contain glass beads, for example three parts by volume of glass beads. .. diameters., between ..... 12.5 ... pm and ...... 850 .. pm ... at · '. to be added to the last-mentioned composition, and possibly also one part of glass that has been broken, with the largest diameter, lying between 250 μιη and 850 μm as a trump measure ': .................. .... .....................

It is also clear that other pigments can be used if other colors are intended.

The dry layer and / or the wet layer can, incidentally, also comprise other equivalent inert materials as a friction agent.

Immediately after manufacture of the component, the reflective top layer obtained exhibits the desired reflective properties. - - '---------------------------------------

As stated previously, the dry layer preferably contains a mixture of glass beads of different sizes, all for the purpose of appropriate penetration of the wet layer.

A mix of . pearls with. diameters between 125 µm and 850 µm will entail appropriate penetration.

Optionally, the glass beads are mixed with sand grains or skid resistance or the like.

... It is '' clear, .. that .... a.-... and_.other_dates ..to "be adjusted to the composition. · Of the wet layer and also to any . vibration / or pressing operation which is applied after applying the wet layer and / or after applying the concrete or the plastic or other material that forms the structural part of the building element ......

Claims (15)

What is claimed is: 1. A method for manufacturing a reflective building element, which method comprises, starting from a mold or the like, the steps of the. provided with a substantially unbound or so-called dry layer which comprises reflective particles, providing a binding layer or so-called wet layer thereon and applying thereto the material that forms the structural part of the building element. 2. Method according to claim 1. characterized in that the unbound ..... or so-called dry - layer comprises glass beads. Method according to claim 2, characterized in that glass beads are a mix of glass beads with diameters between 125 µm and 850 µm. Method according to one or more of the preceding claims, characterized in that ... .. the dry ...... low pok. Contains non-friable particles or resisting agents, such that the dry layer contains between 70% and 80% glass beads and between 30% and 20% non-friable particles or friction agents. 5. A method according to claim 4, characterized in that ......... the dry ..... layer, by three, volume parts of glass beads, between half a volume part and two parts by volume of non-yielding particles. or skidding agent, the largest diameter of which is between 250 µm and 850 µm. Method according to one or more of the preceding claims, characterized in that the binding layer or so-called wet layer is a wet mixture comprising cement and water, and sand and / or; stone grit and / or another grain material '. ................. '........................... Method according to one or more of the preceding claims, characterized in that the wet layer. glass beads and / or non-fattering particles or straws. Method according to claim 6 or 7, characterized in that the wet layer comprises titanium dioxide ......... 9. Method according to one or more of the preceding claims, characterized in that the wet layer comprises per four volumes of cement, essentially one volume of sand, two volumes of water or an amount as required, substantially one volume of titanium dioxide, between two and 'four' glass beads with diameters between 125 µm and 850 µm and between half and two volumes by volume of broken glass articles with largest diameter ranging between 2.50 µm and 850 µm as the skid resistance of 1. ......... .................................................. ................- / Method according to one or more of the preceding claims, characterized in that the material that constitutes the structural part of the building element is concrete or plastic. Method according to one or more of the preceding claims, characterized in that. the mainly unbound or so-called / dry, layer of reflective particles has a thickness of at least 1 millimeter. Method according to one or more of the preceding claims, characterized in that the substantially unbound or so-called dry layer with reflecting particles has a thickness of at least 2 millimeters. Method according to one or more of the preceding claims, characterized in that the binding layer has a thickness of at least 5 millimeters. Method according to one or more of the preceding claims, characterized in that the binding layer has a thickness of at least 8 millimeters. Method according to one or more of the preceding claims, characterized in that the mold is vibrated and / or pressed before and / or after application of the material that concerns the structural part of the structural element concrete or plastic.