CN115182445A - Anti-seepage cast-in-place concrete air conditioner plate structure and construction method thereof - Google Patents
Anti-seepage cast-in-place concrete air conditioner plate structure and construction method thereof Download PDFInfo
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- CN115182445A CN115182445A CN202210877868.4A CN202210877868A CN115182445A CN 115182445 A CN115182445 A CN 115182445A CN 202210877868 A CN202210877868 A CN 202210877868A CN 115182445 A CN115182445 A CN 115182445A
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- waterproof layer
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- 238000010276 construction Methods 0.000 title claims description 13
- 239000004568 cement Substances 0.000 claims description 42
- 238000004378 air conditioning Methods 0.000 claims description 30
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 27
- 229910052782 aluminium Inorganic materials 0.000 claims description 27
- 238000007789 sealing Methods 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000011065 in-situ storage Methods 0.000 claims description 3
- 239000004570 mortar (masonry) Substances 0.000 claims description 3
- 230000001629 suppression Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 1
- 238000009435 building construction Methods 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 description 8
- 239000002699 waste material Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/02—Structures consisting primarily of load-supporting, block-shaped, or slab-shaped elements
- E04B1/04—Structures consisting primarily of load-supporting, block-shaped, or slab-shaped elements the elements consisting of concrete, e.g. reinforced concrete, or other stone-like material
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Building Environments (AREA)
Abstract
The invention relates to the technical field of building construction, in particular to an anti-leakage cast-in-place concrete air conditioner plate structure which comprises an air conditioner plate for placing an air conditioner outdoor unit, wherein a ridge table is fixedly arranged on the side, close to a wall body, of the air conditioner plate, the upper end of the ridge table is attached to the lower end of the masonry body, an arc-shaped corner is arranged at the included angle between the air conditioner plate and the ridge table, a first waterproof layer and a second waterproof layer are sequentially arranged in the included angle region of the air conditioner plate, the ridge table and the arc-shaped corner from bottom to top, the second waterproof layer is arranged on the outer side of the first waterproof layer, and a plastering layer is arranged on the surface of the second waterproof layer. A series of quality problems, potential safety hazards and leakage hidden hazards caused by leakage at the air conditioner plate are avoided.
Description
Technical Field
The invention relates to the technical field of building construction, and belongs to the field of secondary structure construction of houses.
Background
In the construction of most residential engineering, the air conditioning board generally divide into about two-layer, and the upper air conditioning board generally has at least one side to set up on masonry structure, so, upper air conditioning board is also pouring when secondary structure is under construction, often has the seepage phenomenon to take place. Generally, take the south side air conditioner board of house as an example, the upper air conditioner board side wall is mostly bedroom or balcony to the direction inwards, the air conditioner board often looks for the slope direction mistake because of the face, the condensate pipe is damaged, it intakes to rainy day, floor drain blocks up and produces ponding phenomenon, long-term in the past, can have the seepage of taking place gradually in reentrant corner department, in case the seepage phenomenon takes place, not only will handle the seepage, consuming time and wasting power, still can lead to the indoor coating to drop, quality repair problems such as empty drum of plastering, and because the air conditioner board is towards the outer wall, only can follow the outer wall repair, need put the operation of restricting at the roofing, have very big potential safety hazard and risk during the maintenance operation.
Disclosure of Invention
The invention aims to provide an anti-leakage cast-in-place concrete air conditioner plate structure and a construction method thereof, which have the advantages of time and labor saving, simplicity, convenience, effectiveness, convenient operation, maintenance avoidance and the like, solve the quality problem of leakage of the existing air conditioner plate, avoid material loss and labor waste caused by later maintenance, and avoid the high-altitude operation risk of the later maintenance.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides an antiseep cast in situ concrete air conditioner plate structure, is including the air conditioner board of placing the outer machine of air conditioner, and the air conditioner board is close to the fixed bank platform that is provided with of wall side, just the upper end of bank platform is laminated with the lower extreme of brickwork, the air conditioner board is provided with arc bight with bank platform contained angle department, air conditioner board, bank platform and arc bight contained angle region have set gradually first waterproof layer and second waterproof layer from bottom to top, the second waterproof layer is in the outside of first waterproof layer, the surface of second waterproof layer is provided with the layer of plastering.
Further, the ridge platform is made of cast-in-place plain concrete.
Furthermore, bank platform upper portion is kept away from the wall body side and is provided with the recess, the recess is located the lower extreme of brickwork.
Furthermore, the upper end of the first waterproof layer is fixed on the outer vertical surface of the ridge platform through a cement nail, the height of the upper end of the first waterproof layer is lower than that of the groove, the lower end of the first waterproof layer is fixed on the plane of the air-conditioning plate through the cement nail and extends, and the first waterproof layer covers the arc-shaped corner.
Furthermore, the upper end of the second waterproof layer is fixed at the outer vertical face of the groove through cement nails, the lower end of the second waterproof layer is fixed on the plane of the air-conditioning plate through the cement nails and extends, the length of the second waterproof layer extending on the plane of the air-conditioning plate is larger than the length of the first waterproof layer extending on the plane of the air-conditioning plate, and the second waterproof layer covers the first waterproof layer.
Furthermore, sealing parts are arranged at the positions of the cement nails fixed at the two ends of the first waterproof layer and the second waterproof layer.
Further, still include aluminum plate, the cement nail pass behind the aluminum plate with bank platform fixed connection, aluminum plate suppression second waterproof layer upper end realize with the outer facade fixed connection of groove bank platform.
Furthermore, the fixed distance of the cement nails is 200-500 mm.
Furthermore, the thickness of the aluminum plate is 0.5-3 mm.
The construction method of the antiseep cast-in-place concrete air conditioner plate structure comprises the following steps:
s1, while pouring an air conditioner plate, fixedly pouring a ridge platform and a rectangular groove on the side close to a wall body, wherein the pouring material of the ridge platform is plain concrete;
s2, manufacturing an arc-shaped corner at the position of the air conditioner plate and the pit platform, wherein the pouring material of the arc-shaped corner is mortar;
s3, fixing the upper end of a first waterproof layer at the lower end of the groove on the outer vertical surface of the ridge table by adopting cement nails and sealing elements, sealing the upper end of the first waterproof layer by adopting the sealing elements, and fixing the cement nails at a distance of 200-500 mm;
s4, extending a first waterproof layer from top to bottom to sequentially cover the outer vertical surface and the arc-shaped corner of the ridge platform below the upper end of the first waterproof layer onto the air-conditioning board, wherein the length of the first waterproof layer laid on the air-conditioning board is more than or equal to 200mm, and the tail end of the first waterproof layer is fixed by adopting a cement nail and a sealing element;
s5, fixing the upper end of a second waterproof layer on the outer vertical surface of the ridge table at the groove by using a cement nail, a sealing element and an aluminum plate, wherein the cement nail penetrates through the aluminum plate and then is fixedly connected with the ridge table, the aluminum plate presses the upper end of the second waterproof layer to realize the fixed connection with the outer vertical surface of the ridge table at the groove, and the fixed distance between the cement nails on the aluminum plate is 200-500 mm;
s6, extending a second waterproof layer from top to bottom to completely cover the first waterproof layer, wherein the length of the second waterproof layer laid on the air-conditioning plate is more than 50mm longer than that of the first waterproof layer laid on the air-conditioning plate;
and S7, manufacturing a plastering layer on the outer surface of the second waterproof layer, wherein a 1-degree inclination angle is arranged in the horizontal direction of the plastering layer to facilitate rainwater outflow.
Compared with the prior art, the anti-leakage cast-in-place concrete air conditioner plate structure and the construction method thereof provided by the invention have the following beneficial effects: the problem of seepage can effectively be prevented to the first waterproof layer and the second waterproof layer that set up in later stage air conditioner board department, and the work progress is succinct convenient, safe and reliable, low cost, has avoided simultaneously because of the waste of a series of manpower and materials that later stage air conditioner board infiltration maintenance brought, has avoidd the high altitude construction risk of later stage maintenance.
Drawings
FIG. 1, top view of the present invention;
FIG. 2 is a side sectional view of the present invention.
In the figure: 1. an air conditioning panel; 2. an arcuate corner portion; 3. a first waterproof layer; 4. a second waterproof layer; 5. a ridge platform; 6. a seal member; 7. a groove; 8. a cement nail; 9. masonry; 10. plastering layer; 11. an aluminum plate; 12. an air conditioner outdoor unit.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example 1 provided with reference to fig. 1 to 2
The utility model provides an antiseep cast in situ concrete air conditioner plate structure, is including placing the air conditioner board 1 of the outer machine 12 of air conditioner, and air conditioner board 1 is close to the fixed bank platform 5 that is provided with of wall body side, just the upper end of bank platform 5 is laminated with the lower extreme of brickwork 9, air conditioner board 1 is provided with arc bight 2 with 5 contained angles departments of bank platform, air conditioner board 1, bank platform 5 and 2 contained angle regions in arc bight have set gradually first waterproof layer 3 and second waterproof layer 4 from bottom to top, second waterproof layer 4 is in the outside of first waterproof layer 3, the surface of second waterproof layer 4 is provided with plastering layer 10. The ridge platform 5 is made of cast-in-place plain concrete. The bank platform 5 upper portion is provided with recess 7 far away from the wall side, recess 7 is located the lower extreme of brickwork 9. The upper end of the first waterproof layer 3 is fixed at the outer vertical surface of the ridge platform 5 through a cement nail 8, the height of the upper end of the first waterproof layer 3 is lower than that of the groove 7, the lower end of the first waterproof layer 3 is fixed on the plane of the air-conditioning plate 1 through the cement nail 8 and extends, and the first waterproof layer 3 covers the arc-shaped corner 2. The upper end of the second waterproof layer 4 is fixed at the outer vertical face of the groove 7 through a cement nail 8, the lower end of the second waterproof layer 4 is fixed on the plane of the air-conditioning plate 1 through the cement nail 8 and is arranged in an extending mode, the length of the second waterproof layer 4 extending on the plane of the air-conditioning plate 1 is larger than the length of the first waterproof layer 3 extending on the plane of the air-conditioning plate 1, and the second waterproof layer 3 covers the first waterproof layer 3. And sealing pieces 6 are arranged at the cement nails 8 fixed at the two ends of the first waterproof layer 3 and the second waterproof layer 4. Still include aluminum plate 11, cement nail 8 passes behind aluminum plate 11 with bank platform 5 fixed connection, aluminum plate 11 suppression second waterproof layer 4 upper end realize with recess 7 department bank platform 5's outer facade fixed connection. The fixed spacing of the cement nails 8 is 200mm. The aluminum plate 11 has a thickness of 0.5mm.
The construction method of the antiseep cast-in-place concrete air conditioner plate structure comprises the following steps:
s1, while the air-conditioning plate 1 is poured, fixedly pouring a ridge platform 5 and a rectangular groove 7 on the side close to the wall, wherein the pouring material of the ridge platform 5 is plain concrete;
s2, manufacturing an arc corner 2 at the position of the air conditioner plate 1 and the pit 5, wherein the pouring material of the arc corner 2 is mortar;
s3, fixing the upper end of the first waterproof layer 3 at the lower end of the groove 7 on the outer vertical surface of the ridge platform 5 by adopting a cement nail 8 and a sealing piece 6, sealing the upper end of the first waterproof layer 3 by adopting the sealing piece 6, and fixing the cement nails 8 at a distance of 200mm;
s4, extending a first waterproof layer 3 from top to bottom to sequentially cover the outer vertical surface and the arc-shaped corner 2 of a sill 5 below the upper end of the first waterproof layer 3 onto the air-conditioning plate 1, wherein the length of the first waterproof layer 3 laid on the air-conditioning plate 1 is 200mm, and the tail end of the first waterproof layer 3 is fixed by a cement nail 8 and a sealing piece 6;
s5, fixing the upper end of a second waterproof layer 4 on the outer vertical surface of the ridge table 5 at the groove 7 by using cement nails 8, a sealing element 6 and an aluminum plate 11, wherein the cement nails 8 penetrate through the aluminum plate 11 and then are fixedly connected with the ridge table 5, the aluminum plate 11 presses the upper end of the second waterproof layer 4 to realize the fixed connection with the outer vertical surface of the ridge table 5 at the groove 7, and the fixed distance between the cement nails 8 on the aluminum plate 11 is 200mm;
s6, extending the second waterproof layer 4 from top to bottom to completely cover the first waterproof layer 3, wherein the length of the second waterproof layer 4 laid on the air-conditioning plate 1 is 250mm;
s7, a plastering layer 10 is manufactured on the outer surface of the second waterproof layer 4, and a 1-degree inclination angle is arranged in the horizontal direction of the plastering layer 10 to facilitate rainwater outflow.
Example 2
The difference from example 1 is that: the fixed spacing of the cement nails 8 is 500mm. The thickness of aluminum plate 11 is 3mm, and the length that first waterproof layer 3 laid on air conditioner board 1 is 300mm, and the length that second waterproof layer 4 laid on air conditioner board 1 is 400mm.
Example 2
The difference from example 1 is that: the fixed spacing of the cement nails 8 is 400mm. The thickness of aluminum plate 11 is 1mm, and the length of laying on air conditioner board 1 of first waterproof layer 3 is 250mm, and the length of laying on air conditioner board 1 of second waterproof layer 4 is 300mm.
The invention provides an anti-leakage cast-in-place concrete air conditioner plate structure and a construction method thereof, and the anti-leakage cast-in-place concrete air conditioner plate structure has the following beneficial effects: the problem of seepage can effectively be prevented to the first waterproof layer and the second waterproof layer that set up in later stage air conditioner board department, and the work progress is succinct convenient, safe and reliable, low cost, has avoided simultaneously because of the waste of a series of manpower and materials that later stage air conditioner board infiltration maintenance brought, has avoidd the high altitude construction risk of later stage maintenance.
Claims (10)
1. The utility model provides a antiseep cast in situ concrete air conditioner plate structure, is including air conditioner board (1) of placing outer machine of air conditioner (12), its characterized in that: air-conditioning board (1) is close to the fixed bank platform (5) that is provided with of wall body side, just the upper end of bank platform (5) is laminated with the lower extreme of brickwork (9), air-conditioning board (1) is provided with arc bight (2) with bank platform (5) contained angle department, air-conditioning board (1), bank platform (5) and arc bight (2) contained angle region have set gradually first waterproof layer (3) and second waterproof layer (4) from bottom to top, second waterproof layer (4) are in the outside of first waterproof layer (3), the surface of second waterproof layer (4) is provided with plastering layer (10).
2. The anti-leakage cast-in-place concrete air conditioner slab structure according to claim 1, characterized in that: the ridge platform (5) is made of cast-in-place plain concrete.
3. The anti-leakage cast-in-place concrete air conditioner slab structure according to claim 1, characterized in that: the side, far away from the wall body, of the upper portion of the ridge platform (5) is provided with a groove (7), and the groove (7) is located at the lower end of the masonry body (9).
4. The anti-leakage cast-in-place concrete air conditioner slab structure according to claim 3, wherein: the upper end of the first waterproof layer (3) is fixed on the outer vertical surface of the sill table (5) through a cement nail (8), the height of the upper end of the first waterproof layer (3) is lower than that of the groove (7), the lower end of the first waterproof layer (3) is fixed on the plane of the air conditioner board (1) through the cement nail (8) and is arranged in an extending mode, and the arc-shaped corner portion (2) is covered by the first waterproof layer (3).
5. The anti-leakage cast-in-place concrete air conditioner slab structure according to claim 3, wherein: the waterproof structure is characterized in that the upper end of the second waterproof layer (4) is fixed at the outer vertical face of the groove (7) through a cement nail (8), the lower end of the second waterproof layer (4) is fixed on the plane of the air-conditioning plate (1) through the cement nail (8) and is arranged in an extending mode, the length of the second waterproof layer (4) extending on the plane of the air-conditioning plate (1) is larger than the length of the first waterproof layer (3) extending on the plane of the air-conditioning plate (1), and the second waterproof layer (3) covers the first waterproof layer (3).
6. A leak-proof cast in place concrete air conditioner panel structure as claimed in claim 4 or 5, wherein: and sealing pieces (6) are arranged at the cement nails (8) fixed at the two ends of the first waterproof layer (3) and the second waterproof layer (4).
7. The anti-leakage cast-in-place concrete air conditioner slab structure according to claim 6, wherein: still include aluminum plate (11), cement nail (8) pass aluminum plate (11) back and bank platform (5) fixed connection, aluminum plate (11) suppression second waterproof layer (4) upper end realize with recess (7) locate the outer facade fixed connection of bank platform (5).
8. The anti-leakage cast-in-place concrete air conditioner slab structure according to claim 7, wherein: the fixed distance between the cement nails (8) is 200-500 mm.
9. The anti-leakage cast-in-place concrete air conditioner slab structure according to claim 3, wherein: the thickness of the aluminum plate (11) is 0.5-3 mm.
10. The construction method of the anti-leakage cast-in-place concrete air conditioner plate structure as claimed in claim 6, wherein: the method comprises the following steps:
s1, while pouring an air conditioner board (1), fixedly pouring a sill table (5) and a rectangular groove (7) on the side close to a wall, wherein the pouring material of the sill table (5) is plain concrete;
s2, manufacturing an arc corner (2) at the position between the air conditioner plate (1) and the ridge platform (5), wherein the pouring material of the arc corner (2) is mortar;
s3, fixing the upper end of the first waterproof layer (3) at the lower end of the groove (7) on the outer vertical surface of the ridge platform (5) by adopting cement nails (8) and a sealing piece (6), sealing the upper end of the first waterproof layer (3) by adopting the sealing piece (6), and fixing the cement nails (8) at a distance of 200-500 mm;
s4, extending a first waterproof layer (3) from top to bottom to cover the outer vertical surface and the arc-shaped corner (2) of the sill (5) below the upper end of the first waterproof layer (3) to the air-conditioning plate (1) in sequence, wherein the length of the first waterproof layer (3) laid on the air-conditioning plate (1) is more than or equal to 200mm, and the tail end of the first waterproof layer (3) is fixed by a cement nail (8) and a sealing element (6);
s5, fixing the upper end of a second waterproof layer (4) on the outer vertical surface of the sill table (5) at the groove (7) by using a cement nail (8), a sealing piece (6) and an aluminum plate (11), wherein the cement nail (8) penetrates through the aluminum plate (11) and then is fixedly connected with the sill table (5), the aluminum plate (11) presses the upper end of the second waterproof layer (4) to realize the fixed connection with the outer vertical surface of the sill table (5) at the groove (7), and the fixed distance between the cement nails (8) on the aluminum plate (11) is 200-500 mm;
s6, extending the second waterproof layer (4) from top to bottom to completely cover the first waterproof layer (3), wherein the length of the second waterproof layer (4) laid on the air-conditioning plate (1) is more than 50mm longer than that of the first waterproof layer (3) laid on the air-conditioning plate (1);
s7, a plastering layer (10) is manufactured on the outer surface of the second waterproof layer (4), and a 1-degree inclination angle is arranged in the horizontal direction of the plastering layer (10) to facilitate outflow of rainwater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210877868.4A CN115182445A (en) | 2022-07-25 | 2022-07-25 | Anti-seepage cast-in-place concrete air conditioner plate structure and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210877868.4A CN115182445A (en) | 2022-07-25 | 2022-07-25 | Anti-seepage cast-in-place concrete air conditioner plate structure and construction method thereof |
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| CN115182445A true CN115182445A (en) | 2022-10-14 |
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| CN202210877868.4A Pending CN115182445A (en) | 2022-07-25 | 2022-07-25 | Anti-seepage cast-in-place concrete air conditioner plate structure and construction method thereof |
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| CN207177114U (en) * | 2017-03-16 | 2018-04-03 | 青岛新华友建工集团股份有限公司 | A kind of roofing inverted thermal insulation waterproof construction |
| CN109162364A (en) * | 2018-10-24 | 2019-01-08 | 长沙远大住宅工业阜阳有限公司 | Assembled air-conditioning plate, assembled air-conditioning panel structure system and its construction method |
| CN209837491U (en) * | 2019-04-08 | 2019-12-24 | 江苏开放大学（江苏城市职业学院） | Parapet antiseep node |
| CN211690823U (en) * | 2019-12-05 | 2020-10-16 | 江西省第十一建设有限公司 | Waterproof building structure of balcony |
| CN211850449U (en) * | 2019-12-31 | 2020-11-03 | 广东青龙建筑工程有限公司 | Parapet binding off waterproof construction |
| CN212052896U (en) * | 2020-04-17 | 2020-12-01 | 深圳市弘浩建设工程有限公司 | Waterproof connection structure of heat-proof bridge at high-low deformation joint of energy-saving building |
| CN114215112A (en) * | 2021-12-06 | 2022-03-22 | 天津一冶建设工程有限公司 | Waterproof protection device for outer wall of pipe gallery and construction method thereof |
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2022
- 2022-07-25 CN CN202210877868.4A patent/CN115182445A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3013176B1 (en) * | 1999-04-28 | 2000-02-28 | 開發株式会社 | Degassing device |
| CN202530644U (en) * | 2012-04-22 | 2012-11-14 | 项谱成 | Roof waterproof structure |
| CN207177114U (en) * | 2017-03-16 | 2018-04-03 | 青岛新华友建工集团股份有限公司 | A kind of roofing inverted thermal insulation waterproof construction |
| CN107190924A (en) * | 2017-07-07 | 2017-09-22 | 中国十七冶集团有限公司 | A kind of composite water-proof processing method of parapet of roofing waterproofing node |
| CN109162364A (en) * | 2018-10-24 | 2019-01-08 | 长沙远大住宅工业阜阳有限公司 | Assembled air-conditioning plate, assembled air-conditioning panel structure system and its construction method |
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| CN211690823U (en) * | 2019-12-05 | 2020-10-16 | 江西省第十一建设有限公司 | Waterproof building structure of balcony |
| CN211850449U (en) * | 2019-12-31 | 2020-11-03 | 广东青龙建筑工程有限公司 | Parapet binding off waterproof construction |
| CN212052896U (en) * | 2020-04-17 | 2020-12-01 | 深圳市弘浩建设工程有限公司 | Waterproof connection structure of heat-proof bridge at high-low deformation joint of energy-saving building |
| CN114215112A (en) * | 2021-12-06 | 2022-03-22 | 天津一冶建设工程有限公司 | Waterproof protection device for outer wall of pipe gallery and construction method thereof |
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