Anti-leakage structure between laminated slab and flue and construction method thereof

Abstract

The application discloses a kind of anti-seepage structures for laminated slab and flue and its construction method, comprising: finished flue;Laminated slab structure is installed in finished flue four around, the gap is reserved between laminated slab structure and finished flue;Waterproof mortar structure is set in the upper portion of gap, forms first waterproof structure;Plate body structure is embedded in the bottom of laminated slab structure, the plate body structure is composed of mutually perpendicular first plate body and second plate body by integrated molding, the first plate body will be truncated the bottom of gap, so that first plate body and waterproof mortar structure form water-stop space, and first plate body also serves as the support platform of anti-seepage structure;The second plate body divides water-stop space into first water-stop space and second water-stop space;Two water-stop spaces are respectively provided with water-swelling waterstop strip, the water-swelling waterstop strip and corresponding water-stop space jointly constitute two-stage waterproof structure.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and in particular to a leak-proof structure for composite slabs and flues and its construction method. Background Technology

[0002] With the country's vigorous promotion of green construction and the implementation of energy-saving and material-saving requirements in the construction industry, various new technologies and methods have emerged, and the use of composite slabs has become increasingly common. However, in kitchens delivered as bare shells, poor sealing between the composite slabs and the prefabricated flue often leads to water leakage, accounting for a significant proportion of post-delivery rectification items. This leakage between the composite slabs and the prefabricated flue affects people's normal lives and work, seriously damages the indoor environment and the lifespan of the building, causing numerous adverse effects not only on construction companies but also inconvenience to residents later on.

[0003] In the prior art, patent publication number CN 109322491 A discloses a method for preventing leakage at the root of kitchen and bathroom pipes and flues. The method includes filling the gap between the reserved holes in the structural slab and the drainage riser with fine stone concrete; pouring a water-stopping curb with fine stone concrete around the drainage riser to isolate the water-bearing area of ​​the bathroom from the drainage riser; applying JS waterproof coating to both sides of the water-stopping curb, and applying JS waterproof coating to the root of the drainage riser, i.e., the internal area of ​​the water-stopping curb; after the flue is installed, sealing the gap between the flue and the reserved holes in the structure with fine stone concrete. The fine stone concrete is 2 to 3 cm higher than the finished bathroom floor surface, and the horizontal distance is 3 to 4 cm wider than the reserved hole opening. The concrete sealing the flue is higher than the finished floor surface. This method can solve leakage problems in the flue and pipe roots of kitchens and bathrooms to some extent. However, after the flue is installed, the formwork is erected and concrete is poured to seal it. The reserved width between the flue and the floor structure is small, and the junction of the old and new concrete at the opening is a weak point for leakage, making it prone to leakage. Moreover, it is difficult to ensure that the concrete is dense during pouring. At the same time, because the surface of the finished flue is relatively smooth, the bonding surface between the finished flue and the concrete is also prone to being loose, resulting in leakage.

[0004] In view of this, it is necessary to design a leak-proof structure and construction method for the composite slab and flue to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a waterproof structure for the inter-slab and flue gas duct that meets the waterproof requirements by combining multiple waterproof structures, and a method for its construction.

[0006] To achieve the above-mentioned objectives, the present invention provides a leak-proof structure for the space between a composite slab and a flue, comprising:

[0007] Prefabricated flue;

[0008] A composite plate structure is installed around the finished flue, with a gap reserved between the composite plate structure and the finished flue;

[0009] A waterproof mortar structure is installed on the upper part of the gap to form the first waterproof structure;

[0010] The panel structure is embedded at the bottom of the composite slab structure. The panel structure consists of an integrally formed first panel and a second panel that are perpendicular to each other. The first panel cuts off the bottom of the gap, so that a water-stopping space is formed between the first panel and the waterproof mortar structure. The first panel also serves as a support platform for the anti-seepage structure. The second panel divides the water-stopping space into a first water-stopping space and a second water-stopping space. Water-swellable water-stopping strips are provided in the two water-stopping spaces. The water-swellable water-stopping strips and the corresponding water-stopping spaces together form a two-level waterproof structure.

[0011] As a further improvement of the present invention, a waterproof coating is provided on the sidewall of the gap.

[0012] As a further improvement of the present invention, the composite plate structure includes a composite plate and a concrete layer covering the composite plate. The first plate body is pre-embedded at the bottom of the composite plate near the finished flue, such that part of the first plate body is located inside the composite plate structure, and the remaining part extends into the gap and is close to the side wall of the finished flue.

[0013] As a further improvement of the present invention, the second plate is located above the first plate and is disposed at the end of the first plate near the finished flue.

[0014] As a further improvement of the present invention, the second plate portion is embedded in a waterproof mortar structure.

[0015] As a further improvement of the present invention, the width of the first water-stopping space is greater than the width of the second water-stopping space.

[0016] As a further improvement of the present invention, the water-swellable sealing strip expands at the contact surface with the waterproof mortar to form a waterproof layer.

[0017] A construction method for a leak-proof structure between composite slabs and flues includes the following steps:

[0018] S1. Install the finished flue so that a gap is reserved between the composite plate structure and the finished flue. At the same time, the first plate embedded in the bottom of the composite plate structure cuts off the bottom of the gap, and the second plate connected perpendicularly to the first plate divides the bottom of the gap into the first water-stopping space and the second water-stopping space.

[0019] S2. Water-swellable waterstop strips are installed in the two waterstop spaces respectively, so that the water-swellable waterstop strips and the corresponding waterstop spaces together form a two-level waterproof structure.

[0020] S3. Use waterproof mortar to fill the gaps, so that a waterproof mortar structure is formed on the upper part of the gaps, which serves as the first layer of waterproofing.

[0021] As a further improvement of the present invention, the sidewalls of the gap are coated with a waterproof coating.

[0022] As a further improvement of the present invention, the bottom surface of the first plate is coated with a mortar layer.

[0023] The beneficial effects of this invention are:

[0024] 1. This invention pre-embeds a plate structure at one end of the composite slab near the finished flue. On the one hand, the first plate extends to the side wall of the finished flue to form a support platform, providing a support surface for the pouring of waterproof mortar, so as to facilitate the pouring of waterproof mortar to form the first waterproof structure. On the other hand, the water-stopping space formed by the plate structure can confine the leaking water within the water-stopping space when it passes through the first waterproof structure and the second waterproof structure formed by the water-swellable water-stopping strip, thus preventing the leaking water from continuing to seep down.

[0025] 2. This invention utilizes a water-swellable waterstop strip installed between the waterproof mortar structure and the first slab. When encountering mortar, the water-swellable waterstop strip expands, forming a waterproof layer at the contact surface. Simultaneously, as seeping water penetrates beyond the first waterproof structure and layer, the water-swellable waterstop strip continues to expand, blocking the seepage and acting as a second waterproof layer, effectively preventing further seepage. Furthermore, the water-swellable waterstop strip serves as a flexible connector between the waterproof mortar structure and the slab structure, forming a unified anti-seepage structure that significantly improves its effectiveness. Additionally, the second water-swellable waterstop strip acts as a sealant, blocking the gap between the first slab and the finished flue, preventing seepage along the gap and confining any seepage into the second waterstop space.

[0026] 3. This invention, by applying a waterproof coating to the left and right sidewalls of the gap formed between the composite slab and the finished flue, can confine the leakage area of ​​water within the gap, preventing the leakage water from spreading to the composite slab and the finished flue and affecting their service life.

[0027] 4. The multiple waterproofing design of the present invention, which includes initial waterproofing of the waterproof mortar structure, side seepage prevention by applying waterproof coating to the sidewalls, water-swellable waterstop strips, and water restriction of the waterstop space, enables the seepage prevention structure to maintain a good seepage prevention effect over a long period of time, meets the seepage prevention requirements between the composite slab and the flue, ensures construction quality, and greatly reduces the later maintenance costs. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the anti-leakage structure used between the composite slab and the flue.

[0029] Figure 2 This is a plan view of the composite slab structure and the installation of the finished flue.

[0030] Figure Labels

[0031] 10. Composite slab structure; 11. Composite slab; 12. Concrete layer; 20. Flue opening; 21. Finished flue; 31. First slab; 32. Second slab; 41. First water-swellable sealing strip; 42. Second water-swellable sealing strip; 50. Waterproof mortar structure; 60. Waterproof coating; 70. Mortar layer; 80. Gap. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] It should also be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and / or processing steps closely related to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0034] Additionally, it should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] like Figures 1-2 As shown, the present invention provides a leak-proof structure for the space between a composite slab and a flue, comprising:

[0036] 21 finished flue ducts;

[0037] A composite plate structure 10 is installed around the finished flue 21, and a gap 80 is reserved between the composite plate structure 10 and the finished flue 21.

[0038] A waterproof mortar structure 50 is set on the upper part of the gap 80 to form the first waterproof structure;

[0039] The panel structure is embedded at the bottom of the composite slab structure 10. The panel structure is composed of an integrally formed, mutually perpendicular first panel 31 and second panel 32. The first panel 31 cuts off the bottom of the gap 80, so that a water-stopping space is formed between the first panel 31 and the waterproof mortar structure 50, and the first panel 31 also serves as a support platform for the anti-seepage structure. The second panel 32 divides the water-stopping space into a first water-stopping space and a second water-stopping space. Water-swellable water-stopping strips are respectively provided in the two water-stopping spaces. The water-swellable water-stopping strips and the corresponding water-stopping spaces together form a two-level waterproof structure.

[0040] Specifically, a waterproof coating 60 is provided on the side wall of the gap 80, i.e. the side wall of the composite slab structure 10 and the corresponding finished flue 21, to limit the leakage area of ​​the leaking water within the gap 80, and prevent the leaking water from spreading to the composite slab 11 and the finished flue 21, thus affecting the service life of the composite slab 11 and the finished flue 21.

[0041] Specifically, the composite slab structure 10 includes a composite slab 11 and a concrete layer 12 covering the composite slab 11. A first slab 31 is embedded in the bottom of the composite slab 11 near the finished flue 21, such that part of the first slab 31 is located within the composite slab structure 10, and the remaining part extends into the gap 80, closely adhering to the side wall of the finished flue 21. A second slab 32 is located above the first slab 31 and is disposed at the end of the first slab 31 near the finished flue 21, such that the lower part of the gap 80 is formed by the first slab 31, the second slab 32, and the side wall of the composite slab structure 10. The system includes a first water-stopping space and a second water-stopping space formed by the first plate 31, the second plate 32, and the sidewall of the finished flue 21. A first water-swellable water-stopping strip 41 is provided in the first water-stopping space, and a second water-swellable water-stopping strip 42 is provided in the second water-stopping space. The water-swellable water-stopping strips and the corresponding water-stopping spaces together form a two-level waterproof structure. That is, the first water-swellable water-stopping strip 41 and the second water-swellable water-stopping strip 42 together form the second waterproof structure, and the first water-stopping space and the second water-stopping space together form the third waterproof structure.

[0042] Specifically, since the upper surface of the water-swellable waterstop strip is in direct contact with the waterproof mortar structure 50, the contact surface between the water-swellable waterstop strip and the mortar will expand on its own to form a waterproof layer. At the same time, when the leaking water seeps through the first waterproof structure and the waterproof layer, the water-swellable waterstop strip can continue to expand to block the leaking water, so that the water-swellable waterstop strip can act as a second waterproof structure to effectively prevent the seepage of the leaking water.

[0043] Specifically, since the first plate 31 is attached to the side wall of the finished flue 21, there will be a certain gap between the first plate 31 and the finished flue 21. At this time, the second water-swellable sealing strip 42 set in the second water-stopping space will expand towards the gap in the second water-stopping space when it comes into contact with water, and thus act as a sealing element to block the gap between the first plate 31 and the side wall of the finished flue 21, so that the bottom of the second water-stopping space forms a completely sealed state, so as to limit the leakage water that falls into the second water-stopping space after crossing the second waterproof structure, and prevent the leakage water from continuing to seep down. That is, in addition to forming a second waterproof structure by utilizing its own expansion and water-stopping characteristics, the second water-swellable sealing strip 42 of the present invention also acts as a sealing element to achieve a complete seal at the bottom of the second water-stopping space, and assists in the water-stopping of the second water-stopping space.

[0044] Specifically, the second plate 32 is partially embedded in the waterproof mortar structure 50 to fix the upper part of the second plate 32, ensuring the stability of the first and second water-stop spaces. This allows the water-swellable water-stop strip located in the water-stop space to fully expand and form a cutoff surface after encountering water, thus achieving the water-stopping function.

[0045] Specifically, the first plate 31 and the second plate 32 of this invention are stainless steel plates. The first plate 31 and the second plate 32 are integrally formed, so cracks are not easily generated at the connection between the first plate 31 and the second plate 32. In addition, the stainless steel plate has a good anti-seepage effect, thus ensuring the water-stopping effect of the first water-stopping space. In this embodiment, the stainless steel plate is 1mm thick and has good flexibility. The stainless steel plate can be quickly installed and positioned in conjunction with the prefabricated flue, and fits tightly against the side wall of the finished flue 21.

[0046] Specifically, the second plate 32 is positioned at the end of the first plate 31 near the finished flue 21, making the width of the first water-stopping space greater than the width of the second water-stopping space. When leaking water crosses the first and second waterproofing structures, most of the leaking water flowing down along the gap 80 will be confined within the first water-stopping space, while the remaining leaking water along the side wall of the finished flue 21 will be stopped through the second water-stopping space. Compared to conventional waterproofing methods using concrete or mortar to fill the gap 80, this invention uses a water-stopping space formed by a steel plate with good seepage prevention as the final line of defense, achieving a better seepage prevention effect.

[0047] Specifically, the first slab serves as a support platform, facilitating the subsequent pouring of the waterproof mortar structure 50, thereby achieving the design of a multi-layered waterproof structure.

[0048] A construction method for a leak-proof structure between composite slabs and flues includes the following steps:

[0049] S1. Based on the dimensions of the flue, a composite plate 11 with a steel plate structure pre-embedded at one end is obtained. The composite plate 11 is hoisted and positioned around the reserved flue opening 20, and concrete is poured to form the composite plate structure 10.

[0050] S2. Install the finished flue 21 at the flue opening 20, so that a gap 80 is reserved between the composite plate structure 10 and the finished flue 21. At the same time, attach the first plate 31 embedded at the bottom of the composite plate structure 10 to the side wall of the finished flue 21. Use the first plate 31 to cut off the bottom of the gap 80, so that the second plate 32, which is perpendicularly connected to the first plate 31, divides the bottom of the gap 80 into a first water-stopping space and a second water-stopping space.

[0051] S3. Water-swellable waterstop strips are installed in the two waterstop spaces respectively, so that the water-swellable waterstop strips and the corresponding waterstop spaces together form a two-level waterproof structure.

[0052] S4. Use waterproof mortar to fill the gap and seal the top of the gap 80 to form a waterproof mortar structure 50 on the upper part of the gap, which serves as the first waterproof structure.

[0053] Specifically, in this embodiment, a waterproof coating is applied to the sidewall of the gap 80 to form a waterproof coating 60. The waterproof coating 60 is made by applying a waterproof coating to the sidewall of the composite plate 11 and the corresponding sidewall of the finished flue 21 before installing the finished flue 21, or by applying a waterproof coating to the sidewalls on both sides of the gap 80, i.e., the sidewall of the composite plate 11 and the corresponding sidewall of the finished flue 21, after the finished flue 21 is installed and before the water-swellable waterstop strip is set.

[0054] Specifically, the finished surface of the waterproof mortar structure 50 is about 1cm higher than the gap 80, forming an arc surface; the bottom surface of the first plate 31 is coated with a mortar layer 70.

[0055] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A leak-proof structure for use between composite slabs and flues, characterized in that, include: Prefabricated flue; A composite plate structure is installed around the finished flue, with a gap reserved between the composite plate structure and the finished flue; A waterproof mortar structure is installed on the upper part of the gap to form the first waterproof structure; The panel structure is embedded in the bottom of the composite slab structure. The panel structure consists of an integrally formed, mutually perpendicular first and second panel. The first panel cuts off the bottom of the joint, creating a water-stopping space between the first panel and the waterproof mortar structure, and also serves as a support platform for the anti-seepage structure. The second panel divides the water-stopping space into a first water-stopping space and a second water-stopping space. Water-swellable water-stopping strips are installed in each of the two water-stopping spaces, and the water-swellable water-stopping strips and the corresponding water-stopping spaces together form a two-level waterproof structure. The second panel is located above the first panel and is positioned at the end of the first panel near the finished flue. The second panel is partially embedded in the waterproof mortar structure. The width of the first water-stopping space is greater than the width of the second water-stopping space. The composite slab structure includes a composite slab and a concrete layer covering the composite slab. The first slab is pre-embedded at the bottom of the composite slab near the finished flue, so that part of the first slab is located inside the composite slab structure, and the remaining part extends into the gap and is close to the side wall of the finished flue.

2. The anti-leakage structure between the composite slab and the flue according to claim 1, characterized in that: A waterproof coating is provided on the sidewalls of the gap.

3. The anti-leakage structure between the composite slab and the flue according to claim 1, characterized in that: The water-swellable sealing strip expands at the contact surface with the waterproof mortar to form a waterproof layer.

4. The construction method for the anti-leakage structure between the composite slab and the flue according to claim 1, characterized in that, Includes the following steps: S1. Install the finished flue so that a gap is reserved between the composite plate structure and the finished flue. At the same time, the first plate embedded in the bottom of the composite plate structure cuts off the bottom of the gap, and the second plate connected perpendicularly to the first plate divides the bottom of the gap into the first water-stopping space and the second water-stopping space. S2. Water-swellable waterstop strips are installed in the two waterstop spaces respectively, so that the water-swellable waterstop strips and the corresponding waterstop spaces together form a two-level waterproof structure. S3. Use waterproof mortar to fill the gaps, so that a waterproof mortar structure is formed on the upper part of the gaps, which serves as the first layer of waterproofing.

5. The construction method for the anti-leakage structure between the composite slab and the flue according to claim 4, characterized in that: The sidewalls of the gap are coated with waterproof paint.

6. The construction method for the anti-leakage structure between the composite slab and the flue according to claim 4, characterized in that: The bottom surface of the first plate is coated with a mortar layer.

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