CN111764520A - Fiber cement external wall panel lap joint seal structure - Google Patents
Fiber cement external wall panel lap joint seal structure Download PDFInfo
- Publication number
- CN111764520A CN111764520A CN202010619892.9A CN202010619892A CN111764520A CN 111764520 A CN111764520 A CN 111764520A CN 202010619892 A CN202010619892 A CN 202010619892A CN 111764520 A CN111764520 A CN 111764520A
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- Prior art keywords
- groove
- external wall
- wall panel
- fiber cement
- grouting
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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
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
- E04B1/68—Sealings of joints, e.g. expansion joints
- E04B1/6801—Fillings therefor
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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
- E04B1/38—Connections for building structures in general
- E04B1/61—Connections for building structures in general of slab-shaped building elements with each other
- E04B1/6108—Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together
- E04B1/612—Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together by means between frontal surfaces
- E04B1/6125—Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together by means between frontal surfaces with protrusions on the one frontal surface co-operating with recesses in the other frontal surface
- E04B1/6137—Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together by means between frontal surfaces with protrusions on the one frontal surface co-operating with recesses in the other frontal surface the connection made by formlocking
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Finishing Walls (AREA)
Abstract
The embodiment of the invention discloses a fiber cement external wall panel lap joint sealing structure, which comprises external wall panels, a groove female part and a groove male part, wherein the groove female part and the groove male part are respectively arranged at two ends of the external wall panels; the embodiment of the invention uses the base glue and the foaming surface glue in a matching way, so that the base glue is not easy to fall off, and the purpose of lap joint sealing is achieved.
Description
Technical Field
The embodiment of the invention relates to the technical field of outer wall panel waterproofing, in particular to a fiber cement outer wall panel lap joint sealing structure.
Background
The fiber cement board is an outer wall material which is produced by taking cement as a basic material and an adhesive, taking mineral fiber cement and other fibers as reinforcing materials and adopting the processes of pulping, vacuum high-pressure extrusion molding, autoclaved curing and the like, and has the characteristics of light weight, high strength, fire resistance, earthquake resistance, convenience in installation and the like. The composite heat-insulating wall can be independently used as a non-bearing wall of an outer protective structure, and can be matched with a heat-insulating material to form an outer heat-insulating structure system, a composite wall structure system or an outer wall decoration system. In addition, the method can also be used for urban underground engineering such as tunnels, subway stations and the like.
In the assembly type building industry, the fiber cement external wall panel is generally assembled on site, so that standardization can be realized, the quality is controllable, and the efficiency is high and fast. However, during the field assembly process of the prefabricated external wall panel, the spliced part of the prefabricated external wall panel is subjected to waterproof treatment, rainwater is prevented from permeating into the interior of the room along the spliced seam of the external wall panel, meanwhile, if the water seepage phenomenon is serious, the connected part is loosened, the effective bearing capacity of the prefabricated external wall is reduced due to long-term use, and great engineering hidden danger is brought. The traditional external wallboard is usually waterproof by applying silicone sealant at the splicing position of a board tongue-and-groove to ensure the lap joint sealing property between boards, but the silicone sealant is easy to crack and fall off, and can age along with the long time, so that the water leakage phenomenon is caused finally, and the waterproof performance and the building quality of an assembly type building are influenced.
Disclosure of Invention
Therefore, the embodiment of the invention provides a fiber cement external wall panel lap joint sealing structure, which aims to solve the problem that in the prior art, the lap joint sealing performance of the tongue-and-groove of the external wall panel is influenced because silicone sealant is easy to crack, age and fall off.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:
a fiber cement external wall panel lap joint sealing structure comprises external wall panels, a groove female part and a groove male part which are respectively arranged at two ends of the external wall panels, two adjacent external wall panels are overlapped through the groove female part and the groove male part, a sealing adhesive tape for improving lap joint tightness is bonded on a lap joint horizontal plane of the groove female part and the groove male part, the sealing adhesive tape comprises foaming surface adhesive and base adhesive arranged between the foaming surface adhesive and the upper surface of the groove female part, a strip-shaped adhesive injection gap is formed in the horizontal plane of the groove female part, the lower opening of the adhesive injection gap is downwards expanded to form a clamping groove for containing the base adhesive, the base adhesive after the clamping groove is filled with the base adhesive overflows along the adhesive injection gap, and the foaming surface adhesive is sprayed and covered on the adhesive injection gap.
The embodiment of the invention is further characterized in that the lapping surface of the groove-and-tongue female part and the groove-and-tongue male part is in a secondary step shape, the upper vertical surfaces lapped by the groove-and-tongue female part and the groove-and-tongue male part are spliced through a guide structure, and the lower vertical surfaces lapped by the groove-and-tongue female part and the groove-and-tongue male part are connected through a grouting structure.
The embodiment of the invention is further characterized in that the guide structure comprises an open slot arranged on the upper vertical surface of the male rabbet part, and an insertion block matched with the open slot is arranged at the position where the upper vertical surface of the female rabbet part is flush with the open slot.
The embodiment of the invention is further characterized in that the open slot and the insert block are both in a long strip shape with a triangular section.
The embodiment of the invention is further characterized in that the grouting structure comprises a plurality of grouting branch mouths which are arranged on the lower vertical surface of the tongue-and-groove male part, a grouting channel communicated with the plurality of grouting branch mouths is arranged inside the tongue-and-groove male part, a grouting mouth communicated with one end of the grouting channel is arranged on the side surface of the tongue-and-groove male part, and a plurality of slurry converging mouths which are connected with the grouting branch mouths are arranged on the lower vertical surface of the tongue-and-groove female part.
The embodiment of the invention is further characterized in that the lap joint horizontal plane of the groove-and-groove private part is provided with an overflow groove communicated with the upper opening end of the glue injection gap, and the bottom glue is filled in the overflow groove and is level with the lap joint horizontal plane of the groove-and-groove private part.
The embodiment of the invention is further characterized in that the bottom of the overflow chute is provided with a wavy bottom edge.
The embodiment of the invention is also characterized in that the width of the overflow groove is 4mm, and the distance between the overflow groove and the outer edge of the groove-and-tongue pudendum part is 3-5 mm.
The embodiment of the invention is further characterized in that the width of the foaming surface glue is equal to the width of the overflow groove.
The embodiment of the invention has the following advantages:
according to the embodiment of the invention, the glue sprayer is used for spraying a layer of primer on the groove and groove private part of the board to be adhered on the board, and then a layer of foaming surface glue is sprayed on the primer, wherein the primer has viscosity, and the foaming surface glue has stronger elastic deformation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
FIG. 1 is a schematic overall structure diagram of an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a grouting structure in an embodiment of the invention.
In the figure:
1-external wall panel; 2-groove private parts; 3-tongue-and-groove male part; 4-sealing adhesive tape;
21-glue injection gaps; 22-a bayonet slot; 23-an insert block; 24-a slurry converging port; 25-an overflow launder;
31-open slots; 32-grouting branch openings; 33-grouting channels; 34-a grouting port;
41-foaming surface glue; 42-primer.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the invention provides a fiber cement external wall panel lap joint sealing structure, which comprises external wall panels 1, and a groove female part 2 and a groove male part 3 which are respectively arranged at two ends of the external wall panels 1, wherein two adjacent external wall panels 1 are lapped through the groove female part 2 and the groove male part 3, a sealing rubber strip 4 for improving lap joint tightness is bonded on a lapping horizontal plane of the groove female part 2 and the groove male part, and the sealing rubber strip 4 comprises a foaming surface adhesive 41 and a primer 42 arranged between the foaming surface adhesive 41 and the upper surface of the groove female part 2.
Based on the existing structure of the fiber cement external wall panel, the sealing principle of the embodiment of the invention is that a layer of primer 42 is firstly sprayed on the groove and groove private part 2 of the panel through a glue sprayer to be adhered on the panel, then a layer of foaming face glue 41 is sprayed on the primer 42, the primer 42 has viscosity, the foaming face glue 41 has stronger elastic deformation, and the primer 42 and the foaming face glue 41 are matched for use and are not easy to fall off so as to achieve the purpose of lap joint sealing.
The primer 42 in the embodiment of the present invention mainly serves to improve the adhesion performance, an adhesive is coated on the external wall panel 1 as an adherend before the foaming surface adhesive 41 is coated, and in order to improve the adhesion type of the primer 42 and the external wall panel 1, the embodiment of the present invention is specially designed for spraying the primer 42, specifically:
a strip-shaped glue injection gap 21 is formed in the horizontal plane of the groove-and-tongue female part 2, the lower opening of the glue injection gap 21 is expanded downwards to form a bayonet groove 22 used for containing bottom glue 42, the bottom glue 42 which is filled in the bayonet groove 22 overflows along the glue injection gap 21, and the foaming surface glue 41 is sprayed and covered on the glue injection gap 21.
Injecting glue gap 21 and bayonet groove 22 link to form a body one section for the primer injection passageway of type of dogbone, this kind of primer injection structure on the one hand foaming surface glue 41 overlay type spraying makes between primer 42 and the foaming surface glue 41 be connected closely at the upper surface of primer 42, be difficult for droing, simultaneously the bottom of primer 42 is connected with bayonet groove 22's bottom, the zonulae occludens between primer 42 and side fascia 1 has been realized, in addition, because the structure of type of dogbone, even appear becoming flexible between the bottom of primer 42 and bayonet groove 22, because the screens effect of type of dogbone structure also makes the primer 42 after solidifying can't break away from in bayonet groove 22, further improved joint strip 4's bonding performance.
Furthermore, an overflow groove 25 communicated with the upper opening end of the glue injection gap 21 is formed in the lap joint horizontal plane of the groove-and-tongue private part 2, and the bottom glue 42 is filled in the overflow groove 25 and is flush with the lap joint horizontal plane of the groove-and-tongue private part 2.
The design of the overflow groove 25 is to increase the contact area between the primer 42 and the foaming surface glue 41, if the primer 42 is directly overflowed outwards along the glue injection gap 21, the overflow area is not easy to control, the appearance is not good, and meanwhile, the foaming surface glue 41 covers the primer, so that the width of the general foaming surface glue 41 is equal to the width of the overflow groove 25, and the design of the overflow groove 25 plays a role in indicating the width of the foaming surface glue 41 during spraying.
The embodiment of the invention also sets the bottom of the overflow groove 25 to be a wavy bottom edge so as to increase the contact area of the primer 42 and the bottom of the overflow groove 25 and increase the adhesive property.
The embodiment of the invention also provides general limitation on the specific size of the overflow groove 25, the width of the overflow groove 25 is 4mm, and the distance between the overflow groove 25 and the outer edge of the groove-and-tongue female part 2 is 3-5mm, so that the outer wall panels 1 with different sizes can be adaptively adjusted to realize the optimal sealing effect.
In addition, for a specific case of a rabbet, as shown in fig. 2, for example, the overlapping surface of the rabbet female part 2 and the rabbet male part 3 is in a two-stage step shape, so as to avoid that the upper surfaces of two adjacent external wall panels 1 are not aligned after the rabbet female part 2 and the rabbet male part 3 are overlapped, the upper vertical surfaces overlapped by the rabbet female part 2 and the rabbet male part 3 are spliced through a guide structure, and the lower vertical surfaces overlapped by the rabbet female part 2 and the rabbet male part 3 are connected through a grouting structure.
Specifically, the guide structure comprises an open slot 31 arranged on the upper vertical surface of the tongue-and-groove male part 3, and the position where the upper vertical surface of the tongue-and-groove female part 2 is flush with the open slot 31 is provided with an insertion block 23 matched with the open slot 31.
Here, the shape of the open groove 31 and the insert 23 is preferably an elongated shape having a triangular cross section.
The sealing rubber strip 4 is extruded by the insertion of the open slot 31 and the insertion block 23, so that the upper surfaces of two adjacent external wall panels 1 are flush.
The grouting structure comprises a plurality of grouting branch mouths 32 arranged on the lower vertical surface of the tongue-and-groove male part 3, a grouting channel 33 communicated with the plurality of grouting branch mouths 32 is arranged in the tongue-and-groove male part 3, a grouting mouth 34 communicated with one end of the grouting channel 33 is arranged on the side surface of the tongue-and-groove male part 3, and a plurality of slurry gathering mouths 24 connected with the grouting branch mouths 32 are arranged on the lower vertical surface of the tongue-and-groove female part 2.
The lower end surfaces of the male tongue-and-groove part 3 and the female tongue-and-groove part 2 are tightly connected through a grouting structure, adhesive or curing agent can be injected into the grouting channel 33 along the grouting opening 34 through a syringe or an injection gun in concrete grouting operation, the adhesive flows into each grouting branch opening 32 along the grouting channel 33 and then flows into the corresponding slurry gathering opening 24 through the grouting branch openings 32, and the connection of the male tongue-and-groove part 3 and the lower end surface of the female tongue-and-groove part 2 is completed through the connection of the grouting branch openings 32 and the slurry gathering openings 24.
The installation positions of the opening groove 31 and the inserting block 23 in the guide structure and the installation positions of the grouting branch port 32, the grouting channel 33, the grouting port 34 and the slurry gathering port 24 in the grouting structure can be interchanged.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (9)
1. A lapping and sealing structure of a fiber cement external wall panel comprises an external wall panel (1), and a groove and groove female part (2) and a groove and groove male part (3) which are respectively arranged at two ends of the external wall panel (1), wherein two adjacent external wall panels (1) are lapped with each other through the groove and groove female part (2) and the groove and groove male part (3), the lapping and sealing structure is characterized in that a sealing adhesive tape (4) for improving lapping and sealing performance is bonded on a lapping horizontal plane of the groove and groove female part (2) and the groove and groove male part, the sealing adhesive tape (4) comprises a foaming surface adhesive (41) and a bottom adhesive (42) arranged between the foaming surface adhesive (41) and the upper surface of the groove and groove female part (2), a strip-shaped adhesive injection gap (21) is formed on the horizontal plane of the groove and groove (22) for containing the bottom adhesive (42) is formed by downward expansion of the lower mouth of the adhesive injection gap (21), the bottom glue (42) is filled in the bayonet groove (22) and overflows along the glue injection gap (21), and the foaming surface glue (41) is sprayed and covered on the glue injection gap (21).
2. The fiber cement external wall panel lap-joint sealing structure according to claim 1, wherein the lap-joint surface of the groove-and-groove female part (2) and the groove-and-groove male part (3) is in a two-stage ladder shape, the overlapped upper vertical surfaces of the groove-and-groove female part (2) and the groove-and-groove male part (3) are spliced through a guide structure, and the overlapped lower vertical surfaces of the groove-and-groove female part (2) and the groove-and-groove male part (3) are connected through a grouting structure.
3. The fiber cement external wall panel lap joint sealing structure according to claim 2, wherein the guiding structure comprises an open slot (31) formed in the upper vertical surface of the rabbet male portion (3), and an insertion block (23) matched with the open slot (31) is arranged at the position where the upper vertical surface of the rabbet female portion (2) is flush with the open slot (31).
4. The lap seal structure of fiber cement external wall panel according to claim 3, wherein said open slot (31) and said insert block (23) are both in the shape of an elongated bar with a triangular cross section.
5. The fiber cement external wall panel lap joint sealing structure according to claim 2, wherein the grouting structure comprises a plurality of grouting branch openings (32) formed in a lower vertical surface of the tongue-and-groove male portion (3), a grouting channel (33) communicated with the plurality of grouting branch openings (32) is arranged inside the tongue-and-groove male portion (3), a grouting opening (34) communicated with one end of the grouting channel (33) is formed in a side surface of the tongue-and-groove male portion (3), and a plurality of slurry gathering openings (24) connected with the grouting branch openings (32) are formed in a lower vertical surface of the tongue-and-groove female portion (2).
6. The lapping and sealing structure of the fiber cement external wall panel according to claim 1, characterized in that an overflow groove (25) communicated with the upper opening end of the glue injection gap (21) is formed on the lapping horizontal plane of the groove and groove female part (2), and the base glue (42) is filled in the overflow groove (25) and is flush with the lapping horizontal plane of the groove and groove female part (2).
7. The lap seal structure of fiber cement external wall panel according to claim 5, wherein the bottom of said overflow groove (25) is provided with a waved bottom edge.
8. The lap-joint sealing structure of the fiber cement external wall panel according to claim 5, wherein the width of the overflow groove (25) is 4mm, and the distance between the overflow groove (25) and the outer edge of the groove-and-groove female part (2) is 3-5 mm.
9. The lap seal structure of fiber cement external wall panel according to claim 5, wherein the width of said foaming surface glue (41) is equal to the width of said overflow groove (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010619892.9A CN111764520A (en) | 2020-06-30 | 2020-06-30 | Fiber cement external wall panel lap joint seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010619892.9A CN111764520A (en) | 2020-06-30 | 2020-06-30 | Fiber cement external wall panel lap joint seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111764520A true CN111764520A (en) | 2020-10-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010619892.9A Pending CN111764520A (en) | 2020-06-30 | 2020-06-30 | Fiber cement external wall panel lap joint seal structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN111764520A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113352142A (en) * | 2021-05-28 | 2021-09-07 | 宁夏共享机床辅机有限公司 | Splicing sealing mechanism, splicing method and machine tool |
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| JP2000320022A (en) * | 1999-05-11 | 2000-11-21 | Bridgestone Corp | Flexible joint |
| EP1152100A1 (en) * | 2000-05-02 | 2001-11-07 | German Schindler | Sealing device for expansion joints |
| KR20090026894A (en) * | 2007-09-11 | 2009-03-16 | 민만호 | Apparatus for conecting metal panel |
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| CN113352142A (en) * | 2021-05-28 | 2021-09-07 | 宁夏共享机床辅机有限公司 | Splicing sealing mechanism, splicing method and machine tool |
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Application publication date: 20201013 |