CN210947253U - Waterproof structure of prefabricated external sandwich wallboard - Google Patents
Waterproof structure of prefabricated external sandwich wallboard Download PDFInfo
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- CN210947253U CN210947253U CN201921549649.3U CN201921549649U CN210947253U CN 210947253 U CN210947253 U CN 210947253U CN 201921549649 U CN201921549649 U CN 201921549649U CN 210947253 U CN210947253 U CN 210947253U
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- 239000010410 layer Substances 0.000 claims abstract description 67
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 59
- 238000005187 foaming Methods 0.000 claims abstract description 30
- 239000002184 metal Substances 0.000 claims abstract description 18
- 230000000903 blocking effect Effects 0.000 claims abstract description 16
- 239000012790 adhesive layer Substances 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims abstract description 10
- 238000003780 insertion Methods 0.000 claims abstract description 9
- 230000037431 insertion Effects 0.000 claims abstract description 9
- 239000011490 mineral wool Substances 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 9
- 229920001084 poly(chloroprene) Polymers 0.000 claims description 9
- 238000010276 construction Methods 0.000 claims description 4
- 239000004567 concrete Substances 0.000 abstract description 6
- 238000005253 cladding Methods 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 238000005034 decoration Methods 0.000 abstract description 2
- 238000013461 design Methods 0.000 abstract description 2
- 238000009417 prefabrication Methods 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000011056 performance test Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 5
- 239000006260 foam Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 239000000565 sealant Substances 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 238000005111 flow chemistry technique Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000011178 precast concrete Substances 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
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Abstract
The utility model relates to a waterproof structure of prefabricated external sandwich wallboard, which is characterized in that a transverse splicing seam and a longitudinal splicing seam of adjacent prefabricated external sandwich wallboard are sequentially provided with a metal insertion strip, a first weather-resistant adhesive layer, a first foaming sealing layer, a water guide layer, a second foaming sealing layer and a second weather-resistant adhesive layer from outside to inside; a water-retaining tongue-and-groove with low outside and high inside is also arranged between the water guide layer of the transverse abutted seam and the second foaming plugging layer; the section of the metal insertion strip is in an omega shape and is arranged at the outermost side of the transverse seam and the longitudinal seam. The utility model improves the waterproof performance of the node of the prefabricated sandwich wallboard through a plurality of waterproof facilities; the structure of the prefabricated sandwich concrete exterior wall cladding is also improved, a clamping groove for clamping the first foaming blocking layer and the second foaming blocking layer is formed through prefabrication, and the installation performance and the waterproof performance are improved; the structure and the installation design of the metal insertion strip are ingenious, and both waterproof performance and decoration effect are considered.
Description
Technical Field
The utility model relates to a waterproof construction of prefabricated external sandwich wallboard belongs to building prefabricated component technical field.
Background
All prefabricated parts are manufactured by adopting flow processing in factories, and manufactured products are directly used for field assembly. The existing prefabricated wallboard is difficult to ensure the waterproof performance when being installed on site. How to provide a prefabricated external sandwich wallboard, when making it install at the scene, the waterproof performance can be guaranteed to the node, is the technological problem that this field awaits a urgent need to solve.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a prefabricated external sandwich wallboard improves the waterproof performance of prefabricated sandwich wallboard node through multichannel waterproof facilities.
The utility model adopts the following technical proposal:
a waterproof structure of a prefabricated external sandwich wallboard is characterized in that a transverse joint and a longitudinal joint of adjacent prefabricated external sandwich wallboards are sequentially provided with a metal insertion strip, a first weather-resistant adhesive layer, a first foam sealing layer, a water guide layer, a second foam sealing layer and a second weather-resistant adhesive layer from outside to inside; a water-retaining tongue-and-groove with a low outer part and a high inner part is also arranged between the water guide layer of the transverse abutted seam and the second foaming plugging layer; the cross section of the metal insertion strip is in an omega shape and is arranged on the outermost side of the transverse seam and the longitudinal seam.
Preferably, the inner side of the second weather-resistant glue layer is further provided with a fireproof rock wool blocking layer 4.
Furthermore, the innermost side of the fireproof rock wool plugging layer 4 is flush with the inner wall of the prefabricated external sandwich wall panel.
Preferably, the first foaming plugging layer and the second foaming plugging layer are both foaming chloroprene rubber sealing strips 1.
Preferably, a fireproof rock wool plugging layer 4 is arranged between the inner side of the prefabricated external sandwich wall board and the cast-in-place structure 6, an elastic caulking material plugging structure is arranged at the top of the fireproof rock wool plugging layer 4, and a metal cover plate 5 is adopted for edge folding.
Preferably, a water guide cavity and a water guide pipe are arranged in the water guide layer; a water guide cavity 8 and a water guide pipe 9 are arranged in the water guide layer; the water guide cavity 8 is positioned in the prefabricated sandwich wall panel adjacent up and down, and the upper surface of the prefabricated sandwich wall panel at the lower part is concave; the water guide pipe 9 is embedded in the prefabricated external sandwich wallboard, the upper end of the water guide pipe is communicated with the water guide cavity 8, and the lower end of the water guide pipe extends to the condensed water accumulating pipe to be collected uniformly.
Preferably, the transverse joints and the longitudinal joints of the prefabricated external sandwich wall panel are provided with clamping grooves for clamping the first foaming blocking layer and the second foaming blocking layer.
The beneficial effects of the utility model reside in that:
1) the prefabricated sandwich concrete exterior wall cladding, for lining up the board seam between the prefabricated component, adopt waterproof and material waterproofing measure of multiple structure simultaneously from outside to inside, through multichannel waterproof facilities, improve the waterproof performance of prefabricated sandwich wallboard node.
2) The structure to prefabricated sandwich concrete exterior wall cladding self has also been reformed transform, forms the draw-in groove that is used for blocking first foaming shutoff layer and second foaming shutoff layer through the prefabrication, and the installation performance all promotes with waterproof performance to some extent.
3) The structure and the installation design of the metal insertion strip are ingenious, and both waterproof performance and decoration effect are considered.
Drawings
Figure 1 is the utility model discloses the waterproof construction of prefabricated external sandwich wallboard schematic diagram of vertical section.
Figure 2 is a schematic representation of a pair of prefabricated sandwich wall panels in longitudinal section.
Figure 3 is a schematic diagram of the cross section of the waterproof structure of the prefabricated sandwich wall panel of the present invention.
Figure 4 is a schematic representation of a longitudinal section of a prefabricated sandwich wall panel.
Figure 5 is a schematic diagram of a longitudinal section of a waterproof construction of a prefabricated sandwich wall panel of the present invention in another embodiment.
In the figure, 1, a foaming chloroprene rubber layer, 2, a weather-resistant adhesive layer, 3, an externally embedded metal strip, 4, a fireproof rock wool blocking layer, 5, a metal cover plate, 6, a cast-in-place structure, 7, a heat insulation material, 8, a water guide cavity and 9, a metal water guide pipe are arranged.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
The first embodiment is as follows:
the prefabricated concrete sandwich heat-insulating external wall panel is different from the traditional PC member in installation on a cast-in-place platform, the members are directly butted, the PC member is completely anchored with a cast-in-place main body structure by pulling and connecting the PC member by a metal connecting piece, and a post-cast strip is not arranged after the member is integrally installed. The plate seam is filled with foaming chloroprene rubber sealing strips, fireproof rock wool and weather-resistant glue from top to bottom and left and right between the members, wherein the foaming chloroprene rubber strips need to have greater softness, and stress on the outer leaf plates of the prefabricated members is avoided. The concrete description is as follows:
referring to fig. 1-4, a waterproof structure of a prefabricated external sandwich wall panel, wherein a transverse seam and a longitudinal seam of adjacent prefabricated external sandwich wall panels are sequentially provided with a metal insertion strip, a first weather-resistant adhesive layer, a first foam plugging layer, a water guide layer, a second foam plugging layer and a second weather-resistant adhesive layer from outside to inside; a water-retaining tongue-and-groove with a low outer part and a high inner part is also arranged between the water guide layer of the transverse abutted seam and the second foaming plugging layer; the cross section of the metal insertion strip is in an omega shape and is arranged on the outermost side of the transverse seam and the longitudinal seam.
In this embodiment, referring to fig. 1 and 3, a fireproof rock wool blocking layer 4 is further provided on the inner side of the second weather-resistant glue layer.
In this example, referring to fig. 1 and 3, the innermost side of the fire-resistant rock wool plugging layer 4 is flush with the inner wall of the prefabricated sandwich wall panel.
In this embodiment, the first foamed plugging layer and the second foamed plugging layer are both the foamed neoprene sealing strip 1.
In this embodiment, referring to fig. 1 and 3, a fireproof rock wool blocking layer 4 is arranged between the inner side of the prefabricated external sandwich wall board and a cast-in-place structure 6, an elastic caulking material blocking structure is arranged on the top of the fireproof rock wool blocking layer 4, and a metal cover plate 5 is adopted for edge folding.
In this embodiment, the transverse joints and the longitudinal joints of the prefabricated external sandwich wall panel are provided with clamping grooves for clamping the first foaming blocking layer and the second foaming blocking layer.
Example two:
referring to fig. 5, the difference between the present embodiment and the first embodiment is:
a water guide cavity 8 and a water guide pipe 9 are arranged in the water guide layer; a water guide cavity 8 and a water guide pipe 9 are arranged in the water guide layer; the water guide cavity 8 is positioned in the prefabricated sandwich wall panel adjacent up and down, and the upper surface of the prefabricated sandwich wall panel at the lower part is concave; the water guide pipe 9 is embedded in the prefabricated external sandwich wallboard, the upper end of the water guide pipe is communicated with the water guide cavity 8, and the lower end of the water guide pipe extends to the condensed water accumulating pipe to be collected uniformly.
The rest is the same as the first embodiment.
The prefabricated sandwich concrete exterior wall cladding, because for lining up the board seam between the prefabricated component, consequently adopt waterproof and material waterproof measure of multiple structure simultaneously from outside to inside:
the first layer is made of waterproof materials, and outer decorative caulking metal strips 3 are arranged on the outer sides of plate seams according to the building facade effect to form a first layer of water retaining;
the second layer is made of waterproof material, and the two-component weather-resistant sealant 2 is used for keeping water for a long time;
the third layer is made of waterproof materials, and the double-layer foaming chloroprene rubber strip 1 is not only a back lining of the sealant, but also has a water retaining function;
the fourth layer is used for constructing a waterproof measure, a water guide cavity and a water guide pipe, and combining water retaining and water guiding;
a fifth layer, constructing a waterproof measure, constructing a rabbet and arranging a water retaining structure rabbet on a part where water is easy to be stored;
and the sixth layer is made of waterproof material, and the double-layer foaming chloroprene rubber strip is a last measure for retaining water and is an important measure for realizing the air tightness of the precast concrete exterior wall cladding.
Foot size test results:
the test process comprises the following steps:
an airtight performance test, a watertight performance test, a wind pressure resistance test and an in-plane deformation performance test were performed, respectively, and the airtight performance test and the watertight performance test were repeated. And then, under the simulated natural state, when the outer weather-resistant sealant partially fails, detecting the prefabricated part again in the aspects of air tightness, water tightness, wind pressure resistance and the like. And finally, when all water retaining and waterproof measures on the outer side fail, detecting the air tightness, water tightness, wind pressure resistance and the like of the prefabricated part only under the limit condition of the double-layer foaming chloroprene rubber strip on the inner side.
Wherein, the airtight performance test process is as follows: respectively applying 3 pressure pulses with the pressure difference absolute value of 500Pa for 3s before positive and negative pressure detection, and then starting detection after the pressure returns to zero; the water tightness test process comprises the following steps: the water spraying device is arranged on one side of the outer vertical surface of the test sample, water is uniformly sprayed on the whole sample for 10min under the initial state of a laboratory, then positive pressure difference is gradually applied or the sample has a serious leakage position according to a loading program of a pressurization tax message, then the sample is unloaded to 0Pa, and the spraying is finished; the wind pressure resistance detection process is as follows: installing a displacement meter, respectively applying 3 pressure pulses with the pressure difference absolute value of 500Pa for 3s before positive and negative pressure detection, and then starting detection after the pressure returns to zero; the test process of the deformation performance in the plane is as follows: the movable beam is pushed to make a relative displacement in a plane of one period as preloading, then to make a relative repeated movement of three periods, after the three periods are finished, the openable part of the event is switched for 5 times, then is switched tightly, and the process data is recorded.
Test data and results
The second embodiment is a better embodiment.
In view of the preferred embodiments of the present invention, those skilled in the art can make various changes or modifications without departing from the general concept of the present invention, and such changes or modifications should fall within the scope of the present invention as claimed.
Claims (7)
1. The utility model provides a waterproof construction of prefabricated external sandwich wallboard which characterized in that:
the transverse joint and the longitudinal joint of the adjacent prefabricated external sandwich wall panel are sequentially provided with a metal panel strip, a first weather-resistant adhesive layer, a first foaming sealing layer, a water guide layer, a second foaming sealing layer and a second weather-resistant adhesive layer from outside to inside;
a water-retaining tongue-and-groove with a low outer part and a high inner part is also arranged between the water guide layer of the transverse abutted seam and the second foaming plugging layer;
the cross section of the metal insertion strip is in an omega shape and is arranged on the outermost side of the transverse seam and the longitudinal seam.
2. The waterproof structure of a prefabricated sandwich wall panel according to claim 1, wherein: and a fireproof rock wool blocking layer (4) is further arranged on the inner side of the second weather-resistant adhesive layer.
3. The waterproof structure of a prefabricated sandwich wall panel according to claim 2, wherein: the innermost side of the fireproof rock wool plugging layer (4) is flush with the inner wall of the prefabricated external sandwich wall board.
4. The waterproof structure of a prefabricated sandwich wall panel according to claim 1, wherein: the first foaming plugging layer and the second foaming plugging layer are both foaming chloroprene rubber sealing strips (1).
5. The waterproof structure of a prefabricated sandwich wall panel according to claim 1, wherein: a fireproof rock wool plugging layer (4) is arranged between the inner side of the prefabricated external sandwich wall board and the cast-in-place structure (6), an elastic caulking material plugging structure is arranged at the top of the fireproof rock wool plugging layer (4), and a metal cover plate (5) is adopted for edge folding.
6. The waterproof structure of a prefabricated sandwich wall panel according to claim 2, wherein: a water guide cavity (8) and a water guide pipe (9) are arranged in the water guide layer; the water guide cavity (8) is positioned in the prefabricated sandwich wall panel adjacent up and down, and the upper surface of the prefabricated sandwich wall panel at the lower part is concave; the water guide pipe (9) is embedded in the prefabricated external sandwich wallboard, the upper end of the water guide pipe is communicated with the water guide cavity (8), and the lower end of the water guide pipe extends to the condensed water accumulating pipe to be collected in a unified mode.
7. The waterproof structure of a prefabricated sandwich wall panel according to claim 1, wherein: the transverse joint and the longitudinal joint of the prefabricated external sandwich wall panel are both provided with a clamping groove for clamping the first foaming blocking layer and the second foaming blocking layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921549649.3U CN210947253U (en) | 2019-09-18 | 2019-09-18 | Waterproof structure of prefabricated external sandwich wallboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921549649.3U CN210947253U (en) | 2019-09-18 | 2019-09-18 | Waterproof structure of prefabricated external sandwich wallboard |
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| Publication Number | Publication Date |
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| CN210947253U true CN210947253U (en) | 2020-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921549649.3U Active CN210947253U (en) | 2019-09-18 | 2019-09-18 | Waterproof structure of prefabricated external sandwich wallboard |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110528730A (en) * | 2019-09-18 | 2019-12-03 | 上海建科建筑设计院有限公司 | A kind of waterproof construction of prefabricated plug-in sandwich type wall panel |
| CN112160445A (en) * | 2020-09-23 | 2021-01-01 | 王丽明 | Vertical splicing seam of prefabricated concrete external wall panel of prefabricated building and construction method thereof |
-
2019
- 2019-09-18 CN CN201921549649.3U patent/CN210947253U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110528730A (en) * | 2019-09-18 | 2019-12-03 | 上海建科建筑设计院有限公司 | A kind of waterproof construction of prefabricated plug-in sandwich type wall panel |
| CN110528730B (en) * | 2019-09-18 | 2025-02-07 | 上海建科建筑设计院有限公司 | A waterproof structure of prefabricated external sandwich wall panel |
| CN112160445A (en) * | 2020-09-23 | 2021-01-01 | 王丽明 | Vertical splicing seam of prefabricated concrete external wall panel of prefabricated building and construction method thereof |
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