SU600270A1 - Method of fastening protective polymer covering to construction members - Google Patents

Description

one

The invention relates to the field of construction, and in particular to a method for attaching a protective polymer coating to building construction.

There is a known method of fastening a protective and polymer coating to building structures, which consists in laying on the surface of the construction of a protective and full-size coating 1.

The disadvantage of this method is the impossibility of using it to protect structures already erected, as well as the low reliability of the heel.

Another method of fastening protective polymeric nocrytes to building structures is known, which consists in applying to the surface of the structure of a polymeric mastic and laying on it a protective nano-dimensional polymeric mastic 2.

This method is closest to the invention in its technical essence and the achieved result.

The disadvantage of it is the reliability of the mount.

The aim of the invention is to increase the reliability of fastening.

This is achieved in that the method of attaching the protective polymer coating to the building structures consists in applying a structure to the surface

dimensional mastic and laying on it a protective half-measure: 1st coating, before iiaiiecenncM polymeric lstics the upperness of the construction is primed, an adhesive layer and a layer are applied

acid-resistant KrOGK.

FIG. Figures 1 and 2 show the fastening of the south polymer coatings to the strongholds, which is designed in accordance with the invention.

The way ksplsin zanhitnogo riO.uiMcpHoro coating 1 to building structures consists of spreading the polymer surface 2 onto the surface of the 2 and the laying of its protective polymer coating 1. At the same time, it is hard to find. polymer mastic

3a no1surface of construction 2 aios t layer1

4 primers, adhesive layer 5 and layer 6

TO SLOTO1 OUR CRUSHES.

This method provides three options for implementation.

In accordance with;; with the first, a concrete or metal decontamination and dehydration of concrete or metal is applied with an epoxy resin primer mixed with aidsite or bottom flour, which is kept in at least at a temperature not lower than +. An adhesion layer is applied to the primer layer, a state of epoxy resin dissolved in solvent P-4 and mixed with andesitic nl diabase flour. Non-hardened adhesive layers are sprinkled with acid-resistant chips with a fraction of 1-3 mm, for which granulated slag, screenings of granite W, ebn, crushed acid-resistant ceramics, diabase castings and other materials are used. The adhesive layer with powder is kept not lower than + 15 ° C until the epoxy resin is completely hardened. A layer of silicate mastic is applied to the thus prepared surface of concrete or metal, another 10 mm, into which the anchoring fins of the polymer coating can be embedded when it is ribbed. The finished coating and the coating can be kept for at least 24 hours at a temperature not lower than + 15 ° С until the silicate mastic is completely hardened.

The primer and adhesive layer contains the same amount of epoxy resin - ED-14, 16, 20 (100-110 May. H.), Andesite or diabase flour (100-110 May. H.), Polyethylenepolyamine (10-12 may. H. ). The solvent P-4 in the primer is contained in the amount of 200-240 May. hours, and in the adhesive layer - 70-90 May. h

The composition of silicate mastic,%:

Liquid glass24 -27,2

Andezitova or diabazov flour 68 -70

Sodium silicofluoride 4 - 5

Furyl alcohol0,8- 1

According to the second variant, an acid-free, de-dusting and degreased concrete surface is applied with an acid-resistant primer based on liquid glass, which is kept for 2 hours at a temperature not lower than + 15 ° C. A layer of acid-resistant silicate mastic (its composition is indicated above) with a thickness of 10 mm, into which the anchoring fins of the polymeric protective coating are embedded, is applied to the primed concrete surface. Then it is aged for 24 hours at a temperature not lower than + 15 ° C until the mastic is fully hardened. This option is only applicable to the protection of concrete made in wooden formwork. The composition of the primer,%:

Liquid glass46-48

Andesite or Diabase Flour46-48 Sodium Silicone Fluoride6-8 According to the third variant, a cleaned, dedusted, degreased surface of concrete or metal is applied to the primer in the form of a 20% aqueous solution of polyvinyl acetate emulsion, which is kept for one hour until it is completely dry. Polymer-cement mastic based on polyvinyl acetate emulsion with a thickness of 10 mm, into which the anchor fins of the polymer protective coating are embedded, is embedded onto the upper surface of the primer, after which it is kept for 48 hours until the polymer-cement mortar is completely cured.

The composition of polymer cement mastic,%; Polyvinyl acetate emulsion 3-4

Portland Cement M 40015-16

0 Sand fraction to 0.15 mm66-70

Water11 - 15

This variant of removal is most effective when attaching a polymeric protective coating with anchor ribs of a size of 3-5-7 mm.

Using the invention in practice will significantly improve the reliability of fastening.

Claims (2)

1.Litvin A.N., Reinforced concrete structures with polymer coatings, M., 5 "SI., 1974, p. 159. 2.Tishchenko NI and others. The device nols. M., “SI, 1972, p. 70 2 Rig /