RU173884U1 - Construction lamella plate - Google Patents

Abstract

The utility model is aimed at creating a full-sized, easy-to-install low-density lamellar slab with high compressive strength and tensile strength perpendicular to front surfaces. The plate is cut across the fibers of two or more mineral wool boards glued together with a density of 75-100 kg / m, and the cut plane is the plane of the lamella plate.

Description

The utility model relates to construction, is a lamellar slab of mineral basalt wool, which can be used, in particular, as a heat-insulating layer mainly in facade insulation systems of buildings with a thin or thick outer plaster layer, as well as with ceramic tiles, as with the new construction, and during reconstruction, restoration, overhaul and maintenance.

Currently, as a heat-insulating layer in facade systems with a plaster layer, compressed compressed heat-insulating plates made of mineral basalt wool are widely used. As described in RU 22930072 publ. 02/10/2007 [1], the mineral wool fibers moving along the production conveyor are compressed in the direction of its movement, cured and shaped into slabs. As a result of mechanical action on a moving semi-finished product from mineral wool, most of the mineral fibers are oriented in a direction parallel to the plane of the resulting slabs, which is used to fasten the slab to the building base.

Compressed slabs of mineral basalt wool have a bulk density of 100 to 150 kg / m ³ , due to which they satisfy the requirements for compressive strength and also achieve the required tensile strength of the layers.

For example, a FASAD BATTS plate (electronic resource

http://www.rockwool.ru/products+and+solutions/u/2011.product/1541/obshches troitel'naya_izolyatsiya / fasad_batts).

However, durable, rigid and resistant to mechanical deformation, compressed mineral wool slabs with a density of 100-150 kg / m ³ and higher have a rather high cost.

The main requirements for heat-insulating boards used in systems with a plaster layer are:

- ultimate compressive strength - not less than 40 kPa;

- tensile strength perpendicular to the front surfaces is not less than 15 kPa.

In this regard, the use of cheaper boards with a lower density, but not corresponding to the required parameters, is not possible. An exception is products called lamellas. According to Wikipedia, Lamel (from the Latin. Lamella - plate, flake) is a term that describes some plates or small elements that make up the plate structure. In construction, Lamel is a thin plate of building material. According to Wikipedia, a “plate” is a body bounded by two parallel planes, the distance between which, called the thickness of the plate, is small compared to its other dimensions.

Building lamellas are cut from mineral wool slabs so that the distance between the cuts is the thickness of the lamellas, and the cutting plane is the plane of the lamella, which, when turned 90 degrees, is used to attach it to the building base (DE 19811671, publ. 05.01.2000) [2] . In this case, the mineral wool fibers are obtained oriented in the direction transverse to the plane of the lamellas, and when used accordingly, in the direction transverse to the building foundation. The tensile strength perpendicular to the front surfaces of these products is extremely high, and the traction forces acting in this direction, which take place with a tearing tendency, are transmitted as tensile forces in individual fibers. Typical sizes of slats: length - 1200 mm, width - 200 mm.

Due to this, stone wool slats with a bulk density of, for example, 80 kg / m ³ can be used, and they are especially suitable for gluing, for example, in cases where the low load-bearing capacity of the enclosing structure does not allow fastening with fasteners. For example, the lamella strip "Rockwool" (electronic resource

/http://www.rockwool.ru/products+and+solutions/u/2011.product/1542/obshchestroit el'naya_izolyatsiya / fasad_batts_lamella). The compressive strength is at least 40 kPa, the tensile strength perpendicular to the front surfaces is at least 80 kPa.

Due to the fact that the maximum thickness of low density mineral wool boards currently produced is 200-250 mm, the maximum width of the lamellas, respectively, cannot be more than 250 mm. This circumstance makes the lamella extremely low-tech in the work, the installation of which takes considerable time for thermal insulation of the facades. For this reason, mineral wool lamellas are not widely used in the domestic market, despite their lower cost. In practice, installation organizations prefer to use a more expensive, but more convenient compressed high-density facade plate.

The objective of the utility model is to create a building slab of mineral basalt wool of the desired width, which, at a lower density and correspondingly lower cost, has greater strength characteristics compared to the high-density mineral wool slab traditionally used for these purposes.

For this, a construction lamella plate is proposed, cut from mineral wool boards with a density of 75-100 kg / m ³ , which is characterized in that it is cut across the fibers of two or more glued together mineral wool boards, while the cutting plane is the plane of the lamella board.

The essence of the claimed utility model is as follows. If you take two or more mineral wool boards with a density of 75-100 kg / m ³ , lay them flat on top of each other, glue together, and then the width of this “cake” from glued boards, i.e. cut across the fibers, the result will be a full-format low-density building plate, made essentially using the technology of a conventional lamella, the fibers of which will be oriented transversely to its plane, and when used, transverse to the construction base.

At the same time doubled, tripled, etc. the thickness of the initial mineral wool slabs will become the width of the obtained lamellar slab, the length of the glued mineral wool slabs will become the length of the obtained lamellar slab, the distance between the cuts will become the thickness of the obtained lamellar slab, and the cutting plane will become the plane of the lamellar slab.

The resulting product can be called a lamella plate, because mechanical properties make it possible to use it as a heat-insulating layer in facade insulation systems with a plaster layer. At the same time, the cost of such a plate will be significantly lower than that of compressed high-density plates, and technical indicators will be higher. The thickness of the resulting lamella slab can be cut any, but not more than the width of the original mineral wool slabs. The width of the resulting lamella slab will depend on the thickness and number of bonded raw mineral wool slabs.

A new technical result achieved by the claimed solution is to create a full-sized, easy-to-install low-density lamella slab with high compressive strength and tensile strength perpendicular to the front surfaces.

The utility model is illustrated by drawings, where in FIG. 1 shows the original mineral wool plate; in FIG. 2 - three initial mineral wool slabs glued together in thickness; in FIG. 3 is the same as in FIG. 2 with cut lines for slats; in FIG. 4 - finished construction lamella slab.

Mineral wool plates of various sizes, produced on the domestic market of mineral wool thermal insulation, can be used as initial mineral wool plates for the production of building lamellar plates. In this example, three mineral wool boards 1 with a density of 75-100 kg / m ³ , length L = 1000 mm, width b = 600 mm, thickness a = 200 mm were glued together with mineral wool glue 2 and cut across the fibers into plates 3, each of which is a finished building board with a length of L = 1000 ± 5 mm, a width of c = 3a = 600 ± 3 mm, and a thickness of d = 200 ± 2 mm. In this case, the cut plane is the plane of the lamella plate 4, which is used for fastening to the building base.

The finished building lamellar plate has a thermal conductivity of 0.038-0.045 W / mK, a density of 75-100 kg / m ³ , compressive strength at 10% deformation - 56 kPa, tensile strength perpendicular to the front surfaces - 109 kPa.

The claimed building board can be made of mineral wool boards having other sizes, however, based on the price-quality ratio, mineral wool boards are 1000 mm long, 600 mm wide, 200 mm thick. are preferred. In addition, compared with a compressed high-density plate, the resulting plate has increased adhesion of adhesive solutions to the surface of the insulation, a more even working surface.

Thus, an inexpensive full-size, easy-to-install in comparison with lamellas, construction lamella slab made of mineral basalt wool is declared, which at lower density and correspondingly lower cost has high strength properties, increased adhesion of adhesive solutions to the insulation surface, a more even working surface, in comparison with the traditionally compressed compressed cotton wool high-density plate.

Claims (1)

A construction lamella slab cut from mineral wool slabs with a density of 75-100 kg / m ³ , characterized in that the lamellar slab is cut across the fibers of two or more mineral wool slabs glued together, while the cutting plane is the plane of the lamella slab.

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