RU2373340C1 - Universal sealing gasket - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: invention is related to the field of construction and may be used for sealing of external wall panel joints. Universal sealing gasket comprises core from elastic heat-insulation material with applied layer of non-solidified butyl rubber sealant. Sealing gasket is equipped with inserts from water-expandable sealant. Inserts are placed into layer of butyl rubber sealant on diametrically opposite surfaces of core. Technological grooves are provided for mentioned inserts in core.

EFFECT: improved reliability and durability of gasket.

3 dwg

Description

The invention relates to the field of construction and can be used to seal joints of external wall panels, expansion and installation joints, waterproofing joints exposed to hydrostatic pressure of water.

Known sealing heat-insulating gasket "Vilaterm" of circular cross-section made of polyethylene foam (see the album of JSC TsNIIPROMZDANIY "Sealing of structures of buildings and structures with materials" Abris S "and" Abris R ", Moscow, 2005, p.7).

A disadvantage of the known gasket is its single-function (thermal insulation), which leads to the need for additional operations to ensure water, steam and air protection when sealing joints. These operations are laborious and require expensive materials and highly skilled workers.

Closest to the proposed technical essence is a universal gasket containing a core of elastic insulating material of circular or annular cross-section, on the surface of which a layer of non-curable butyl rubber sealant is placed (see "Universal sealing gasket" TU 5772-001-13053966-2007, LLC Dealan, Izhevsk, 2007, p. 2).

Known gasket does not have sufficient reliability for long-term operation of building structures, because in this case, the sealing surfaces are destroyed: microcracks, irregularities, pores are formed, and filling them with a sealant layer becomes difficult. This leads to the need for additional operations of the technological cycle, an increase in labor costs and expenses for additional materials.

The technical problem solved in the proposed device is to increase the reliability and durability of the gasket.

The problem is solved by the fact that the gasket containing a core of elastic heat-insulating material with a layer of non-curing butyl rubber sealant placed on it is provided with liners of water-expanding sealant placed in a layer of butyl rubber sealant on diametrically opposite surfaces of the core, while in the core inserts are made technological grooves.

The essence of the technical solution is illustrated by the drawings, in which Fig. 1 shows a cross-section of a gasket, in Fig. 2 - a layout of a gasket in a deformation seam, in Fig. 3 - element 1 of Fig. 2.

Universal gasket contains a cylindrical core (1) made of foamed polyethylene with a through ventilation hole (2). On the surface of the core (1), a layer (3) of butyl rubber non-curing sealant is placed. On diametrically opposite surfaces of the core (1), grooves (4) are made and liners (5) of a water-expanding sealant are placed in them. The width of the inserts (5) is governed by the degree of responsibility of the seam. On the surface of the gasket there is a release technological coating (6) from a metallized film.

Sealing gasket works as follows. The gasket in the stressed state (i.e., compressing the elastic core 1) is installed in a deformation or mounting seam, ensuring its contact with the walls of the seam in the area of the liners (5). Under the influence of elastic forces, the core tends to take its original shape and presses the sealing layer (3) against the wall panels, making a waterproofing abutment in the area. During the long-term operation of building structures, pores, irregularities, microcracks appear on the surfaces of expansion and assembly joints, and as a result, it becomes possible to break the seal and penetrate water in the contact area of the layer (3) with the surface of the wall panel. Having reached the liner (5) from a water-expanding sealant, the moisture is retained in it, while the liner sealant, in a confined space, turns into a gel and increases in volume up to 200-500%, filling all microcracks and roughnesses of the abutment surface and providing reliable sealing without human intervention . Placing the liners (5) in the technological grooves (4) of the core (1) ensures their safety when installing the gasket in the seam.

Thus, the proposed sealing gasket provides high reliability and durability of sealing joints.

Claims (1)

A universal gasket mainly for sealing installation and expansion joints, containing a core of elastic heat-insulating material with a layer of non-curing butyl rubber sealant placed on it, characterized in that it is provided with liners of water-expanding sealant placed in a layer of butyl rubber sealant on diametrically opposite surfaces this in the core under the above liners made technological grooves.

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