CN213390609U - Prefabricated outer wall hole plugging structure for fabricated concrete building and prefabricated outer wall - Google Patents
Prefabricated outer wall hole plugging structure for fabricated concrete building and prefabricated outer wall Download PDFInfo
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- CN213390609U CN213390609U CN202021523336.3U CN202021523336U CN213390609U CN 213390609 U CN213390609 U CN 213390609U CN 202021523336 U CN202021523336 U CN 202021523336U CN 213390609 U CN213390609 U CN 213390609U
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Abstract
The utility model relates to a building construction, in particular to an assembly type concrete building prefabricated outer wall hole plugging structure and a prefabricated outer wall, the assembly type concrete building prefabricated outer wall hole plugging structure comprises a liner plate, the liner plate is closely arranged in a prefabricated outer wall hole to be plugged, and the liner plate divides the prefabricated outer wall hole to be plugged into an inner cavity and an outer cavity; one cavity facing outdoors is filled with a sealant layer. Through setting up this prefabricated outer wall hole plugging structure of assembled concrete building, compare in traditional hole plugging structure, solved the peripheral easy slight cracked problem that produces of hole, through setting up foretell liner board just, simple, practical and convenient settlement fill sealed gluey volume and to sealed stereotype, compare in traditional plugging structure, the utility model discloses an assembled concrete building prefabricated outer wall hole plugging structure can be better on water-proof effects, and the structure is more stable.
Description
Technical Field
The patent of the utility model relates to a construction, concretely relates to prefabricated outer wall hole block structure of assembled concrete building and have the prefabricated outer wall of assembled concrete building of this structure.
Background
At present, the assembled concrete building in China is in a rapid development stage, but relevant matching standards and specifications still need to be continuously improved. Generally speaking, in order to satisfy construction measures, a part of holes are reserved for installing split screws and external hanging racks, because the outer surface of the prefabricated peripheral retaining wall usually has no waterproof mortar plastering layer, and the inner surface generally has no plastering layer, at this time, the plugging of the reserved holes by a construction unit and a design institute is rarely considered enough, so that some construction units still adopt a traditional plugging mode (see fig. 1) for saving cost: the inner side and the outer side of the hole are filled with cement mortar, however, when the prefabricated outer enclosure wall adopts a traditional mortar hole plugging mode, the mortar can be dehydrated and dried to shrink after solidification, fine cracks are generated around the hole, the waterproof function of the building is difficult to ensure only by one layer of outer decoration, and the outer wall is very easy to seep water in the long-term use process of the building. Because the outer wall of the fabricated concrete building is waterproof and difficult to repair, and the cost is very high, the construction quality of the waterproof sealant of the outer wall directly determines the construction cost and the later maintenance cost. The aim is to reduce or avoid the water leakage of the outer wall, save the later maintenance cost and improve and optimize the construction process flow of the hole plugging of the outer wall of the fabricated concrete building.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a traditional worker method to the prefabricated outer wall hole of present shutoff assembled concrete building is difficult to the problem of guaranteeing the waterproof function of building, provides a prefabricated outer wall hole block structure of assembled concrete building and has the prefabricated outer wall of assembled concrete building of this structure.
In order to achieve the purpose, the technical scheme adopted by the application is that the prefabricated outer wall hole plugging structure for the fabricated concrete building comprises a liner plate, wherein the liner plate is tightly arranged in a prefabricated outer wall hole to be plugged, and divides the prefabricated outer wall hole to be plugged into an inner cavity and an outer cavity; and one cavity facing the outside is filled with a sealing adhesive layer.
Through setting up this prefabricated outer wall hole plugging structure of assembled concrete building, compare in traditional hole plugging structure, solved the peripheral easy slight cracked problem that produces of hole, through setting up foretell liner board just, simple, practical and convenient settlement fill sealed gluey volume and to sealed stereotype, compare in traditional plugging structure, the utility model discloses an assembled concrete building prefabricated outer wall hole plugging structure can be better on water-proof effects, and the structure is more stable.
Furthermore, the outer surface of the sealant layer is flush with the surface of the prefabricated exterior wall.
And furthermore, a bottom coating liquid layer is arranged between the sealing adhesive layer and the inner wall of the prefabricated outer wall hole.
Furthermore, a mortar layer for plugging the opening is arranged at the opening of the prefabricated outer wall hole facing the indoor cavity.
Further, the extending depth of the sealant layer is greater than the distance from the liner plate to the mortar layer.
Furthermore, the opening of the prefabricated outer wall hole facing the indoor is provided with a glass fiber net bonded on the outer side of the mortar layer.
Further, the liner plate is a circular polyethylene plate.
Furthermore, the diameter of the gasket plate is larger than the diameter of the hole of the prefabricated outer wall, and the difference between the diameter of the gasket plate and the diameter of the hole of the prefabricated outer wall is 2-4 mm.
The utility model also provides an assembled concrete building prefabricated outer wall, construct prefabricated outer wall hole shutoff structure including foretell assembled concrete.
When the prefabricated outer wall hole plugging structure of the prefabricated concrete building of the utility model is constructed, a prefabricated outer wall hole plugging method of the prefabricated concrete building can be adopted, which comprises the following steps,
firstly, construction is carried out outdoors, and the construction method comprises the following steps: cleaning holes and determining the depth of the plugging construction holes; preparing a polyethylene plate and arranging the polyethylene plate as a liner in the hole; pasting the pattern paper on the periphery of the hole; coating a bottom coating liquid in the holes; filling sealant into the hole; tearing off the adhered figure paper;
the construction is carried out by transferring from outdoor to indoor, comprising the following steps: injecting a foaming agent into the hole; and filling waterproof mortar into the hole opening facing the indoor space.
Furthermore, when outdoor construction is carried out, sundries on the outer side of the hole are firstly removed, then the inside of the hole is cleaned, and the sundries in the hole are blown out in a blowing mode during cleaning.
Further, when the packing is provided, the packing diameter > the hole diameter, and the difference between the packing diameter and the hole diameter is 2 to 4mm, a plurality of foam rods of different sizes should be provided. After the base layer is cleaned up, the foam rod is embedded into the glue hole, a construction space of waterproof sealant is reserved, and the thickness of the sealant is 20 mm.
Further, when the primer is applied in the hole, the region where the primer is applied is located in the portion of the inner wall of the hole into which the pad is inserted to the orifice.
Further, when the sealant is filled, the temperature of the construction environment is controlled to be 6-40 ℃, and the relative humidity is controlled to be 40% -80%; when the sealant is filled, the sealant outlet moves outwards from the inside of the hole for filling, and the sealant outlet is aligned with one surface of the gasket facing the outside to fill when the sealant is filled, so that the surface of the gasket facing the outside is fully coated with the sealant and then moves towards the outside. Too low an ambient temperature can reduce the adhesion of the sealant because the surface wettability of the sealant is reduced and frost and ice can form on the cold substrate, affecting the adhesion of the sealant. On the building surface of too high ambient temperature and direct sunlight, the actual temperature on substrate surface may be very much higher than ambient temperature, receives the influence of high temperature, and the sag resistance of sealed glue can worsen, curing time can accelerate, live time and finishing time can shorten, produce the bubble easily simultaneously. Too low a relative humidity will slow down the curing speed of the sealant, and too high a relative humidity may form a condensed water film on the surface of the substrate, affecting the adhesion of the sealant to the substrate, and possibly also causing the sealant to form bubbles.
Further, after the filling of the sealant is completed, removing the excess sealant along the sealant joint, and scraping the sealant joint;
when the glue seam is required to be recessed into the wall body, trimming the sealant along the glue seam by using an arc scraper; the trimmed glue line should be flat and straight. When the glue joint is required to be a decorative separation joint of the outer facade of the building, certain attractiveness is guaranteed after the glue joint is trimmed, and the phenomena of obvious wrinkles and unevenness cannot occur.
When the later stage of the glue joint is required to be covered by a decorative surface layer, coating a bonding promoter on the surface of the cured sealant before coating the decorative layer, and then constructing; ensure good coating effect and avoid the falling off of the decorative surface layer.
Furthermore, after the sealant is filled, no foreign object is contacted within 48 hours due to insufficient surface curing depth of the sealant, and standing and maintaining are carried out for 28 days. The service life of the sealant is ensured.
Furthermore, when waterproof mortar is filled in the opening of the hole facing the indoor space, the inner side of the hole is blocked by M5.0 cement mortar doped with 5% of waterproof agent.
Furthermore, when the waterproof mortar is filled into the hole opening facing the indoor space, the glass fiber net is adhered to the plugging hole before the inner decoration layer is constructed.
The present invention will be further described with reference to the accompanying drawings and the detailed description. Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description. Or may be learned by practice of the invention.
Drawings
The accompanying drawings, which form a part of the disclosure, are included to assist in understanding the disclosure, and the description provided herein and the accompanying drawings, which are related thereto, are intended to explain the disclosure, but do not constitute an undue limitation on the disclosure.
In the drawings:
FIG. 1 is a schematic view of a conventional method for plugging holes in a prefabricated outer wall of a concrete building;
FIG. 2 is a schematic view for explaining the hole plugging method of prefabricated exterior walls of fabricated concrete buildings;
1-prefabricating an outer wall;
2-a liner panel;
3-sealing the adhesive layer;
4-priming liquid layer;
5-mortar layer.
Detailed Description
The present invention will be described more fully with reference to the accompanying drawings. Those of ordinary skill in the art will be able to implement the invention based on these descriptions. Before the present invention is described with reference to the accompanying drawings, it is to be noted that:
the technical solutions and features provided in the present invention in each part including the following description may be combined with each other without conflict.
Moreover, the embodiments of the invention described in the following description are generally only examples of a subset of the invention, and not all examples. Therefore, all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention shall fall within the protection scope of the present invention.
With respect to the terms and units of the present invention. The term "comprises" and any variations thereof in the description and claims of this invention and the related art are intended to cover non-exclusive inclusions.
As shown in fig. 2, the prefabricated outer wall hole plugging structure for an assembly type concrete building, which is used for plugging holes on a prefabricated outer wall 1, comprises a liner plate 2, wherein the liner plate 2 is tightly arranged in the holes of the prefabricated outer wall to be plugged, and the liner plate 2 divides the holes of the prefabricated outer wall to be plugged into an inner cavity and an outer cavity; one of the above-mentioned cavities facing outdoors is filled with a sealant layer 3. This prefabricated outer wall hole shutoff structure of assembled concrete building performance is better on water-proof effects, and the structure is more stable. The outer surface of the sealant layer 3 is flush with the surface of the prefabricated exterior wall 1. Not only beautiful, but also ensure the structure of the sealant layer 3 to be more stable and reduce the interference of foreign objects. And a bottom coating liquid layer 4 is arranged between the sealing adhesive layer 3 and the inner wall of the prefabricated outer wall hole. The stability of the surface of the porous base material can be enhanced by arranging the bottom coating liquid layer 4, and the influence of dust on the adhesive property of the sealant is reduced. Preventing migration of the surface of the adherend component to the sealant layer 3, thereby affecting the adhesive performance. The adhesion of the precast concrete plate is stabilized, and the residual release agent and the sealant are prevented from acting, so that the performance of the sealant is influenced. The opening of the prefabricated outer wall hole facing the indoor cavity is provided with a mortar layer 5 for plugging the opening. In the indoor direction, the mortar layer 5 can be used for plugging from the economic aspect. The sealant layer 3 extends to a depth greater than the distance between the liner panel 2 and the mortar layer 5. The opening of the prefabricated outer wall hole facing the indoor is provided with a glass fiber net bonded on the outer side of the mortar layer 5. The liner panel 2 is a circular polyethylene sheet. The diameter of the liner plate 2 is larger than the diameter of the hole of the prefabricated outer wall, and the difference between the diameter of the liner plate 2 and the diameter of the hole of the prefabricated outer wall is 2-4 mm.
Prefabricated outer wall hole shutoff structure of assembled concrete building above adopting can obtain a prefabricated outer wall 1 of assembled concrete building, adopts and sets up the utility model discloses a prefabricated outer wall 1 that has prefabricated outer wall hole shutoff structure of assembled concrete building compares in traditional prefabricated outer wall 1 better on waterproof nature can.
The prefabricated outer wall hole plugging method for the fabricated concrete building comprises the following steps of firstly constructing outdoors, and comprises the following steps: cleaning holes and determining the depth of the plugging construction holes; preparing a polyethylene plate and arranging the polyethylene plate as a liner in the hole; pasting the pattern paper on the periphery of the hole; coating a bottom coating liquid in the holes; filling sealant into the hole; tearing off the adhered figure paper; the construction is carried out by transferring from outdoor to indoor, comprising the following steps: injecting a foaming agent into the hole; and filling waterproof mortar into the hole opening facing the indoor space. The specific operation can be carried out as follows.
Construction preparation:
preparing tools, such as a glue gun, a scraper, a beautiful line paper, a hard brush, a soft brush, an electric pick, a hand hammer, a chisel and the like. The types of the waterproof sealant and the matched primer solution of the outer wall are reasonably selected according to the conditions of engineering characteristics, base material types, surrounding environment influence, seasonal air temperature, structural deformation displacement performance and the like; and purchasing soft closed-pore circular polyethylene plates with different dimensions according to the sizes of the holes. Before formal construction, a sample plate is made, and then large-area construction is carried out. Checking the hole part, collecting hole base layer information, checking whether the hole is blocked or not, and preparing a proper cleaning tool.
Cleaning a construction surface:
when the outer edge of the hole is coated with slurry, the slurry is shoveled by a scraper, and then the dust is cleaned by a soft brush, so that the outer side of the connecting hole is smooth and clean.
Under the condition that sundries exist in the hole, when the hole is internally provided with sundries such as foaming agent, steel bar joint, gasket, batten and the like which are remained in the installation process of the precast concrete member, tools such as an electric pick, a cutting machine and the like are used for cleaning the sundries, the construction depth of the foam caulking rod and the waterproof sealant is ensured, and finally, a powerful blower is used for cleaning dust and loose sundries in the hole.
Inserting the gasket:
the liner mainly has the function of controlling the forming quality and the forming thickness of the sealant so as to avoid influencing the bonding performance. The gasket material is preferably selected from round polyethylene sheet with soft closed pores (polyethylene foam round sheet commonly available in the market). The foam board with the specification size 2-4mm larger than the rubber seam is generally selected, and a foaming agent is not used as a liner material. Due to the different sizes of the holes, a plurality of foam rods with different sizes are required to be prepared. After the base layer is cleaned up, the foam rod is embedded into the glue seam, a construction space of waterproof sealant is reserved, and the thickness of the sealant is 20 mm.
Pasting the pattern beautifying paper:
the effect of the figure-beautifying paper is mainly to control the apparent width of the glue seam and ensure the attractive and tidy appearance of the wall seam. The masking paper is generally made of materials which are easy to adhere and tear, and is bent and adhered along the periphery of the hole and compacted, and the masking paper is not easy to break when being adhered so as not to be easy to tear. Before the masking paper is pasted, a soft brush is used for cleaning dust at the pasting position so as to avoid infirm pasting. The masking paper is only used in the operation within the construction range of the day.
Brushing a primer coating solution:
waterproof sealants generally have good adhesion to cementitious substrates, but take into account the complexity of the construction site, such as: in order to better ensure the performance of the waterproof sealant, a hole base layer is carefully cleaned before the sealant is constructed, and a primer is uniformly brushed in a glue joint by using a hard brush, wherein the primer is a special matched product in the same factory as the waterproof sealant. The primer mainly has the effects of strengthening the stability of the surface of a porous substrate (such as a cement concrete PC board and an extrusion molding board), reducing the influence of dust on the adhesive property of the sealant, preventing the surface of an adhered body component (such as water and an alkaline substance) from migrating to the sealant layer 3, further influencing the adhesive property, stabilizing the adhesive property of a precast concrete board (PC board) block, and preventing the residual PC board release agent from acting with the sealant, further influencing the adhesive property.
Filling a sealant:
the sealant is constructed on a dry substrate in a clean environment with the temperature of 6-40 ℃ and the relative humidity of 40-80%. Too low an ambient temperature can reduce the adhesion of the sealant because the surface wettability of the sealant is reduced and frost and ice can form on the cold substrate, affecting the adhesion of the sealant. On the building surface of too high ambient temperature and direct sunlight, the actual temperature on substrate surface may be very much higher than ambient temperature, receives the influence of high temperature, and the sag resistance of sealed glue can worsen, curing time can accelerate, live time and finishing time can shorten, produce the bubble easily simultaneously. Too low a relative humidity will slow down the curing speed of the sealant, and too high a relative humidity may form a condensed water film on the surface of the substrate, affecting the adhesion of the sealant to the substrate, and possibly also causing the sealant to form bubbles. The sealant is constructed within 60 minutes after the primer coating liquid is coated for 5 minutes, otherwise, the use effect of the primer coating liquid is influenced.
Trimming the hole part:
after the glue injection is finished, the redundant sealant is shoveled along the glue joint by a scraper, and the glue joint is scraped flat. If the decoration of the outer vertical surface of the building requires that the glue joint is recessed into the wall body, the arc scraper is used for finishing the sealant along the glue joint, and the finished glue joint is smooth and straight. If the glue joint is a decorative separation joint of the outer facade of the building, certain beauty is ensured after the glue joint is trimmed, and the phenomena of obvious wrinkles and unevenness are avoided. If the later stage of the glue seam is covered by a decorative surface layer, the construction is carried out after the surface of the cured sealant is coated with the adhesion promoter before the decorative layer is coated, so that the good coating effect is ensured, and the falling of the decorative surface layer is avoided. And (4) trimming the glue line to be flat, and slowly tearing off the glue line from one end of the textured paper.
And (3) later-stage maintenance:
after the glue is applied, the surface of the sealant is not cured to a sufficient depth, so that the sealant cannot be pressed within 48 hours, cannot be disturbed and constructed within 28 days, and is kept still, so that the service life of the sealant is ensured.
Foaming agent blowing:
because the uncured sealant is easy to extrude out of the holes when the foaming agent expands, the foaming agent can be injected from the inner side after the sealant is completely cured, and the proper amount of the foaming agent is suitable so as not to influence the construction thickness of the mortar.
And (3) waterproof mortar construction:
the inner side of the hole is blocked by M5.0 cement mortar doped with 5% of waterproof agent, the thickness is 60mm, and before the inner decoration layer is constructed, a 100 mm-100 mm glass fiber net is stuck on the blocked hole to prevent the inner decoration layer from cracking.
The contents of the present invention have been explained above. Those of ordinary skill in the art will be able to implement the invention based on these descriptions. Based on the above-mentioned contents of the present invention, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present invention.
Claims (9)
1. The prefabricated outer wall hole plugging structure for the fabricated concrete building is characterized by comprising a liner plate, wherein the liner plate is tightly arranged in a prefabricated outer wall hole to be plugged, and divides the prefabricated outer wall hole to be plugged into an inner cavity and an outer cavity; one of the cavities facing outdoors is filled with a sealant layer.
2. The prefabricated concrete structure prefabricated exterior wall hole plugging structure of claim 1, wherein the outer surface of the sealant layer is flush with the surface of the prefabricated exterior wall.
3. The prefabricated outer wall hole plugging structure of an assembled concrete building as claimed in claim 1, wherein a primer layer is arranged between the sealant layer and the inner wall of the prefabricated outer wall hole.
4. The prefabricated concrete building prefabricated exterior wall hole plugging structure of claim 1, wherein the opening of the prefabricated exterior wall hole facing the indoor cavity is provided with a mortar layer for plugging the opening.
5. The prefabricated concrete exterior wall hole plugging structure of claim 4, wherein the sealant layer extends to a depth greater than a distance between the liner panel and the mortar layer.
6. The prefabricated concrete exterior wall hole plugging structure of claim 4, wherein the opening of the prefabricated exterior wall hole facing the indoor is provided with a glass fiber net bonded to the outside of the mortar layer.
7. The prefabricated concrete exterior wall hole plugging structure of claim 1, wherein the liner panel is a circular polyethylene panel.
8. The prefabricated outer wall hole plugging structure of an assembled concrete structure according to claim 7, wherein the diameter of the liner plate is larger than the diameter of the prefabricated outer wall hole, and the difference between the diameter of the liner plate and the diameter of the prefabricated outer wall hole is 2-4 mm.
9. An assembled concrete prefabricated exterior wall of a building, characterized by comprising the hole plugging structure of the assembled concrete prefabricated exterior wall of any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021523336.3U CN213390609U (en) | 2020-07-28 | 2020-07-28 | Prefabricated outer wall hole plugging structure for fabricated concrete building and prefabricated outer wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021523336.3U CN213390609U (en) | 2020-07-28 | 2020-07-28 | Prefabricated outer wall hole plugging structure for fabricated concrete building and prefabricated outer wall |
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| Publication Number | Publication Date |
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| CN213390609U true CN213390609U (en) | 2021-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021523336.3U Active CN213390609U (en) | 2020-07-28 | 2020-07-28 | Prefabricated outer wall hole plugging structure for fabricated concrete building and prefabricated outer wall |
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| CN (1) | CN213390609U (en) |
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- 2020-07-28 CN CN202021523336.3U patent/CN213390609U/en active Active
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