Method to fix architectural elements from polystyrene foam using auxiliary device for fixation

FIELD: construction.

SUBSTANCE: on a facade to the place of element adhesion before application of glue on its rear surface they fix auxiliary devices that represent a rectangular metal plate with extended holes for attachment to the facade. The plate is equipped with two rows of sharp cogs arranged along large edges of the plate perpendicularly to its plane. Tips of cogs have process nicks-and-burrs. Auxiliary devices are fixed on the wall so that cogs are arranged perpendicularly to the facade plane, with sharp ends outside. Afterwards glue is applied onto the rear surface of the element, and the element is strongly pushed onto protruding cogs so that the rear plane of the element and the plane of the facade contact each other, and excessive glue is squeezed out. Excessive glue is removed. The auxiliary fastening device provides for necessary temporary fixation of the element until complete drying of glue.

EFFECT: invention improves quality and reduces cost of assembly.

2 cl, 4 dwg

 

Description of the invention

The invention relates to low-rise and cottage construction, in particular to a method of mounting the architectural elements of the facade decoration of expanded polystyrene to the facades of the building and construction mounting technique used to carry out relevant installation works (CL E04F 13/00).

A well-known method of fastening architectural elements EPS using special adhesives and sealants for foam polystyrene. The disadvantage of this method is that, since the drying time of these adhesives is a few hours, during this time it is necessary to provide a tight clamping element to the wall. For medium to large architectural elements to do this is difficult.

The known method of fastening architectural elements EPS using glue for polystyrene and cross-cutting anchor fasteners. He is bonding architectural element to the facade and its additional fixation using end-to-end anchor fasteners (stud screw, screw or disc dowels depending on the physical properties of the wall). This method is described, for example, in the "rules and regulations for the installation of overhead architectural elements EPS and finishing with the use of materials "LES" (TR-11018049-011-2009, 2010 edition with the changing 1-2010 and supplemented. CJSC "LAES", ,Samara). It has the following major drawbacks:

- If additional fixation architectural element with anchor fastener element has to make a through hole that violate the decorative covering element and spoil its appearance. After drying, these holes usually incorporated various glue and finishing compositions, however, despite this generally designated anchoring remain visible, and the quality decorative coating deteriorates. In addition, the need to plug the holes adds cost and complexity to the installation process.

- When fixing architectural element using anchor fasteners, adhesive composition between the wall and the item is still wet. Polystyrene foam, of which the element does not have sufficient strength and elasticity. Therefore, when tightening the screws directly into the clamping element can snuggle up to the wall stronger, and in those places where no fastening, can move away from the wall. In the adhesive layer voids, and inside the element internal stresses, which lead to cracks in the adhesive layer and at joints. This is especially the case when mounting on not-so-smooth walls. All this significantly affects the reliability and quality of installation.

The known method mount the Oia architectural elements made of polystyrene foam to glue, assuming the presence of horizontal edges of the element protruding pieces of reinforcing mesh (U.S. Patent No. US 7296387 B2, CL E04F 13/00, 2007). Architectural element is glued to the wall by pressing to the wall and spackling the walls on the adjacent reinforcing mesh element which projects from its edges. The disadvantage of this method is the need for subsequent puttying and painting the surface of a wall mounted around decor. Also, you must have protruding from the edges of the architectural elements of the grid, which complicates their manufacture.

Also known fastening with concealed fasteners fixing attachable to the structure of the decorative element (patent WO No. 9712111, publ. 03.04.1997). It is mainly used for fastening decoration to frames glazing, but in some cases can be used as an auxiliary device for fastening architectural elements. This fixture has a U-shaped cross section and is made in the form of a long solid profile that its base with concealed fasteners attached to the wall. This shelf profile come into hidden cavities on the back side of the ornamental element. The disadvantage of this method is the necessity of having, on the opposite side of the architectural element in the hidden recesses of the respective U-shaped prof is Liu. This complicates the installation and restricts the use of the method of fastening long molded elements.

The proposed method of attachment of the architectural elements EPS using the auxiliary fastener is intended to address these shortcomings. Namely, to simplify the process of assembling, to avoid violation of the decorative surface of the architectural element in its fixation on the facade and to eliminate the possibility of occurrence of internal stresses in the element, as well as voids and microcracks in the adhesive composition and the joints between the individual elements. The proposed method of attachment using the auxiliary fastener is as follows.

Before applying to the back surface of the architectural element, the adhesive composition on the facade of place bonding element attach multiple accessories fasteners. This accessory is a rectangular plate 1 with elongated holes 2 for fastening to the front. The plate is provided with two rows of sharp types 3, located on major edges of the plate perpendicular to its plane (Fig.1). The characteristic size of the plate is 85×35 mm or more, and finger length of 14 mm or more, depending on the size of the subject installation of architectural elements. Depending on the material of the facade surface supporting the disorder can be fixed by using a small dowel-wood-screws, dowels, screws, and adhesives type "liquid nails". Auxiliary device fixed on the wall so that the spikes were located perpendicular to the plane of the facade, the pointed ends stick out. Depending on the size of the architectural element supporting device fixed to the wall of the calculation 2-3 pieces on one element (Fig.3). Further, on the back surface of the architectural element of the applied adhesive composition for foamed polystyrene. Then a decorative element with a force is placed on the protruding spikes previously attached auxiliary devices of the fastener so that the back plane of the decorative element and the plane of the facade came into contact, and the excess adhesive composition for foam polystyrene acted out. Speaking outside the glue is removed with a spatula and wet cloth. Thus, the auxiliary device hardware to provide the necessary temporary fixation element in place of its attachment to the complete drying of the adhesive composition. To improve the quality of temporarily fixing a decorative element thorn assistive devices fastener is of the form shown in Fig.2. When the tip of a thorn has technological burrs 4 (Fig.2).

1. Fastening architectural elements EPS to the facade of the building with the use of assistive devices for the crepe is a, characterized in that to improve the quality and increase the speed of installation prior to gluing architectural element to the wall attach an auxiliary device for temporary fixation element made in the form of a rectangular plate with elongated holes for fastening to the front, fitted with two rows of sharp spines located on major edges of the plate and is perpendicular to the plane on which architectural element deposited on the back surface of the glue stick to the back plane of the decorative element and the plane of the facade in contact.

2. The method according to p. 1, characterized in that to improve the quality of temporarily fixing a decorative element to glue the tip of a thorn assistive devices fastener has technological burrs.



 

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