SU1760056A1 - Method of restoring joint tightness in large wall panels of buildings - Google Patents

Abstract

Usage: construction, operation and repair of large-panel buildings. The method of restoring the tightness of the joints of large wall panels of buildings includes clearing the butt from the old sealant, drying, driving the anchors to the anchor joint with a bark at one end with a thread and a nut on the other, attaching an elastic sealing gasket to the anchor, and dressing the compensator anchor with the adhesive previously clamped along its sides tape, pressing and gluing the tape to the edges of the adjacent wall panels, pressing the gap-compensator to the panels. Moreover, the compensator compensator, depending on the size of the junction pour the convex part either inward or outward. 2 hp f-ly, 3 ill.

Description

The invention relates to the operation and repair of large-panel buildings, in particular, to the restoration of tightness of vertical joints of large wall panels of buildings.

There are a number of methods for restoring the joints of panels, including clearing them from old sealants, drying, if necessary, the mouth of the joints and forcing new sealants into the joint or applying a mastic sealant, for example thiokol, at the mouth of the joint. Such methods are described in detail in the technological maps of the LenNII AKH, 1970, in the book of M. Boyko. Maintenance and repair of buildings and structures: SI, 1986, p. 119, 1920, in the book of the Polish author E. Arendarsky. Durability of residential buildings, M., SI, 1988 .. p. 116. in the book of A.Roytman and N.Smolenskaya Repair and Renovation of Residential and Public Buildings M., SI. 1979., p. 51, which indicate that according to domestic and foreign experience

The device of closed joints based on mastic sealants is considered ineffective due to their rapid aging and poor adhesion to concrete. Unfortunately, such joints continue to be arranged and, at present, a large amount of their repair has accumulated. This causes an extremely negative reaction from both residents and operators. This is evidenced, in particular, by the round stele session on the topic This insidious joint (on the problem of sealing seams of panel buildings), the content of which is set out in the journal of Leningrad Panorama, 1986 No. 3 and in the article by M. Boykov in the same journal 1st 10, 198G. All this confirms the relevance, the importance of this problem and the complexity of its practical solution.

The closest to the invention to the technical essence and the achieved result is a method of restoring the tightness of joints by v-clearing.

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if necessary, dry them and coat them with adhesive tape, gerlen or glass reinforcement, non-woven materials with a roofing mastic on them 1.

The main disadvantage of this method is

that both the tightness and the durability of the sealing of the joint depend entirely on the properties of the sealant, on its adhesion to concrete, which, under the influence of many climatic factors and constant temperatures of deformation of the panels, are unreliable and not durable: they are restored on average every 5 years.

The aim of the invention is to develop such a method of sealing the joints of large panels, which would ensure their greater reliability and durability.

This goal is achieved by the fact that when restoring the tightness of the joints, two new operations are introduced: after a well-known clearing and drying, the mouth of the joint is hammered into it and secured with steel anchors, mainly three or four per floor, at the end of which the measles are held, holding them in the joint, and on the outside, over the joint, a thread with a nut, then the mouth of the joint, as in the known method, is filled with an hermetic seal of the hernite type and glued to the edges of the adjacent panels, after that anchors are placed on the anchors on the anchors, advantageously Naturally made from a durable material - from a metal alloy, plastic, etc. - with an adhesive tape of the type of gerlen or arm-glue on the mastic pre-glued on the inside and bleed the anchors to the adjacent panels with nuts on the anchors to achieve the required tightness joint. . Maintenance of a tight butt joint will be possible in pressing the jaw up with nuts to increase the tightness of the joint, and the next repair is possible after many decades, depending on the material of the gash, its service life, and will consist in replacing the old leg with a new one.

The essence of this method consists, firstly, in protecting the sealing joint of materials against environmental and climatic influences by the skimmer and because of this extending their service life, and secondly, in improving the reliability of sealing the joints due to mechanical pressing of the sealing joint materials, in addition to adhesion, the same latch.

Thus, the proposed method significantly improves the two main qualities of the tightness of the joints of the panels: their reliability and durability.

The foregoing concludes that

The proposed method of restoring the tightness of panel joints is new, applicable to the restoration of any types of existing joints, provides

Their high reliability and durability and therefore is useful, effective and meets the criterion of novelty and utility. FIG. 1 and 2 show the butt joint of panels by the proposed method,

5 horizontal section, with a convex slat above the joint.

In this case it is indicated: 1 - wall panel; 2 - splash-compensator; 3 - glue mite; 4 - Elastic gasket type

0 gernite; 5 - metal anchor with a bark on one end and a thread with a nut on the other; 6 - nut with locknut; 7 - washer; 8 - sponges on the anchor for gripping and turning it in the joint; 9 - adhesive under the elastic gasket

5 or adhesive tape, if it is inserted under the gasket; 10 - hard core anchor.

The proposed method is implemented as follows.

Three or four anchors are placed on the floor in the calculated joint (clogging) and fixed, the joint is filled with an elastic gasket, and anchors are put on a compensator with prepared holes and pressed to the panels with nuts on the anchors.

5 Restoring the tightness of the joint ends by visually checking that the splat compensator is pressed against the panel over the entire height of the floor. (Works are conducted from the lower floor upwards and the flat panel of the upper level is located on the lower floor; both flat panels are fixed in this place with one anchor). The joint restoration is complete when there is no gap between the panel and the panel. When repairing a wide joint, adhesive tape can be inserted and pasted.

5 inside the joint, brought to the front surface and after laying the elastic gasket is pressed with a flatbed compensator. For narrow joints and for convenience of work, the adhesive tape is pre-connected to the lining

0 — gets under its bent edges and is clamped by them. The adhesive side of the tape is always directed towards the panels and the strip of gluing the tape to the front surface of the concrete and pressing it (tape)

5 with a flatten-compensator is approximately 3-4 cm.

The size of the anchor and the design of its core are determined depending on the design and size of the joint. Fig, 3 shows them

four options. The most important and difficult thing is to start-to hammer it into the joint and fix it. To do this, they can be flat in the form of a flat Christmas tree, which can be brought into the joint and fixed in it after turning 90 and others, shown in FIG. 3

Restoring the tightness of such a joint can be brought about by tightening the nuts, in connection with shrinkage - by aging of the elastic gasket, or by replacing the splat. what can be in 50-100 l. depending on the durability of its material.

The feasibility of the proposed method of restoring the tightness of the joints of large wall panels consists in ensuring the repair of the joints for a long time. Considering that at present they are being restored more than a hundred kilometers each year in the country, hundreds of tons are consumed with sealant and many specialized trusts are occupied with this - an increase in the time between repairs is an important problem. If instead of the official repair period after 8 years established by the Regulation on the organization and conduct of reconstruction, repair and maintenance of residential buildings and public and socio-cultural facilities, Appendix 3 (and in fact it is carried out on average 5l.) The proposed method makes it possible to increase the service life by 50 and 80-100 years, depending on the material of the strip, so that the number of repairs can be reduced by 6-12 times. Preliminary calculations show that, according to the labor intensity and cost of the proposals, 34S 6 7

This method will be about twice as expensive as those conducted, but at the same time, its efficiency, compared to those currently carried out, will be more significant - 5 times or more. This increases the comfort of the dwellings, repairs associated with leakage and freezing of joints are eliminated, the appearance of large-panel buildings, which will not be ticolation-thick, each panel will be improved.

Claims (3)

Claim 1. The method of restoring the tightness of the joints of large wall panels of buildings, including the removal of the old sealant and drying the mouth of the joint, is distinguished by the fact that. in order to increase the reliability and durability of the joint, in the joint an anchor is secured with a bark at one end, a thread and a nut at the other, press an elastic sealing gasket onto the anchor on the side of the threaded part, then put on a compensator with pre-clamped edge of the sides with adhesive tape, press and glue the tape to the edges of the adjacent wall panels, then press the flat panel compensator to the outer surfaces of the wall panels with nuts. 2. A method according to claim 1, characterized in that the side edges of the compensator are bent inwards. 3. Method according to paragraphs. 1 and 2, characterized in that the wide joints of the latch compensator are oriented with a convex part towards the inside of the junction. J y2 W 9igZ