DD276319A1 - METHOD FOR FIXING A CURED MEMBRANE LAYER FROM CLOSED CELLULUM GLAZING PLATES TO MINERAL EXTERIOR SURFACES OF BUILDINGS - Google Patents

Abstract

The invention relates to a method for attaching a Waermedaemmschicht of closed-cell foam glass plates to mineral Außenflaechen of buildings and finds application in the field of construction in the improvement of Waermedaemmung existing or newly constructed structures. The invention is based on the object of overcoming the defects of organic adhesive and adhesive binder in the attachment of foam glass and to create a permanent connection between foam glass plate and mineral substrate, which resists both weathering and mechanical influences. According to the invention, this object is achieved in that a silicate putty-like binder is used and a glass fiber rod ensures an additional anchoring between the foam glass plate and the substrate. Fig. 1

Description

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Field of application of the invention

The invention relates to a method for attaching a thermal barrier coating of closed cell foam geysers on mineral outer surfaces of buildings and is used in the field of construction in improving the thermal insulation of existing or newly constructed structures with Auüeniläciioii clinker brick or brick, plaster, concrete, Aibest- Cement slab or other mineral, silicon dioxide-containing materials by means of an attachment layer of closed-cell foam glass plates (Coriglas or foam glass).

Characteristic of the known state of the art In DD-PS 65020 is a method for increasing the thermal insulation and moisture protection of to be clad Surfaces, especially building surfaces, described. In this case, among other plates of foam glass sealed by one or more times immersion in inlet reason on all sides,

coated with surface structure and in order to create a diffusion cavity between these plates

Foam glass and the surface to be covered on its back by means of strip-wise applied plastic putty, in the joint with Squeezing or overlapping glued or pressed to the surfaces to be covered. The different ones However, expansion coefficients of the foam glass, the plastic cement and the substrate were insufficient in this solution Consideration, so that on the one hand tears as a result of curing of the binder, the surface of the foam glass plates

and the plates are released, and on the other hand, the adhesive binder brittle by the heat occurring at the interfaces to the foam glass plate, shrinks and over-normal and thus also tears the surface of the foam glass plate, so that the safe Bofostigung the insulating layer can not be guaranteed.

Since this solution was realized in the late sixties and early seventies nevertheless and soon significant structural damage

occurred because the insulation layer gradually broke away from the building, was on the production of

Thermal insulation layers on exterior surfaces of buildings with foam glass dispensed and the excellent properties

diose material for thermal insulation and surface treatment of buildings were no longer used.

It is also known that Wacserglaskitt is suitable for bonding glass nuf glass, ie silicate materials, that Silicate binder and Spachtelputz exist, which are suitable for all mineral substrates, on whose surface the Silicate binder in favor of a very good adhesion dor Beschichtungson can be silicified. Notwithstanding, however, in the art regarding the attachment of thermal barrier coatings made of foam glass panels

on Gobäudeaßenflächen the use of unsuitable Plastkitts or plastic adhesive recommended, which is also evidenced by the corresponding specialist literature (Jaw, material science for the construction industry, publishing house for construction, Berlin 1977, p.312;

Eichler, Practical Building Physics, Volume 3-thermal insulation materials, publishing house for construction, Berlin 1971, p. 67). Object of the invention

The aim of the invention is the structural-physical improvement of the outer walls of buildings while reducing the expenses through the use of low-cost materials and by minimizing the maintenance and Wartungsarboiten.

Explanation of the essence of the invention

The invention has for its object to overcome the shortcomings of organic adhesive and adhesive binder and to create a permanent connection between foam glass plate and mineral substrate, which resists the heat accumulation εη the glass surface and mechanical influences.

According to the invention, this object is achieved in that * \ ir attachment of a thermal barrier coating of closed-cell foam glass panels on mineral outer surfaces of buildings, wherein a putty-like binder strip-like vertical, intermediate diffusion cavities forming applied to the back of the foam glass plates and printed with these on the surface to be covered or pressed and thereby bruises are formed in the shock, a per se known silicate leveling plaster, consisting of silicate binder and Spachtelputz in a mixing ratio of 1: 3 is used as a putty-like binder, which with both the foam glass and with the silicon dioxide-containing surface of the outer surface to be covered Building enters a silicating connection.

Furthermore, to improve the resistance yegen mechanical influences before applying the putty-like binder in the corresponding areas of the outer wall to be drilled holes drilled 30-40 mm deep obliquely down and then glass fiber rods of about 60mm length and about 6mm diameter plugged into these holes and then applied the putty-like binder both in vertical strips and in the region of the holder to be pressed on the back of each foam glass plate to be fastened, this pressed onto the glass fiber rod and pressed as described above to the Außenv ^ nd.

embodiment

The invention will be explained in more detail below with reference to an embodiment. Hereby show:

Fig. 1: a vertical section through the clad exterior building wall Fig. 2: the section A-A through the clad exterior building wall.

A building exterior wall 1 with mineral, d. H. Silica-containing exterior plaster 2 should be made with a thermal barrier coating Foam glass plates 3 are covered. For this purpose, in the building exterior wall 1 in a grid that the distance from center to center of the foam glass plates 3 in

vertical direction and horizontally to the middle of the upper third of these plates corresponds, holes drilled 40mm deep obliquely down into the building exterior wall 1.

Glass fiber rods 7 of 60mm length and 6mm diameter were then inserted into these holes 6. Thereafter, on the back of the foam glass plate 3 to be fastened, a putty-like bonding agent 4 consisting of

silicate binder (potassium silicate glass) and Spachtelputz (a mixture of fine-grained natural stone and

Silicate pigment white) in a mixing ratio of 1: 3, strip-like vertical as well as on the upper and lower front side and in the Boreich the einzudrückenden holder applied. The thus prepared foam glass plate 3 is on the fiberglass rod 6, which thereby penetrates into this gedrüv .. 't and to the Exterior plaster 2 of the building exterior wall 1 pressed so that form in the Stößon bruises 5 and between the

vertically applied binder strip diffusion cavities 8 arise. By this procedure, it is possible to achieve a continuous silicate system structure, since the silicate putty-like binder with both the foam glass and with the siliceous surface of the outer wall receives a silicating, durable, insensitive to weathering Vorbindung.

In addition, this connection is secured against mechanical influences by anchoring on the glass fiber rod 7. By using this orfindungsgomäßen method following Vortoile over the prior art of the Technology:

- Applied as a thermal insulation on the outer shell, insulation values are achieved that no other substance applies. The low thermal conductivity of the foam glass, combined with its resistance to rotting, is not nearly reached by other materials.

- Facade facades or brickwork exterior surfaces freed from poor plaster can be coated with precoated or pretreated boards without plaster application, which on the object receive the required coating in the form of paints, silicate spraying or filler dispensing /.

- Feriiyloiloigenhoime with sandwich panels having Asbet cement boards on the outside surface may also be provided with additional thermal insulation and a silicate plaster which will last for years through the use of the siliceous putty-type binder.

Claims (2)

1. A method for attaching a thermal barrier coating of closed-cell foam glass plates to mineral exterior surfaces of buildings, in which a putty-like binder strip-like vertical, intervening diffusion cavities, applied to the back of the foam glass plates and pressed or pressed with these to the surface to be bonded while crushing squish joints be formed, characterized by the use of a known silicate leveling plaster, consisting of silicate binder and Spachtelputz in a mixing ratio 1: 3, as a putty-like binder (4), both with the foam glass (3) and with the silicon dioxide-containing surface to be clad Outside of the building enters a silicating connection. 2. The method according to claim 1, characterized in that prior to the application of the putty-like binder (4) in the corresponding region of the outer wall to be covered (1) bores (6) about 30-40 mm deep obliquely downwards into the outer wall (1) Drilled and then glass fiber rods (7) of about 60mm in length and about 6mm diameter in these holes (6) are inserted and then the putty-like binder (4) both in vertical strips and in the region of the einzugrückenden holder on the back of each to be fastened foam glass plate (3) applied, this is pressed with its upper portion on the glass fiber rod (7) and the entire surface of the outer wall (1) is pressed.