Building construction joint waterproof structure

Abstract

The utility model discloses a building construction joint waterproof structure which comprises an outer waterproof sealant layer, a permeable backing layer, an inner waterproof sealant layer and a waterproof backing layer which are sequentially filled at a building construction joint from outside to inside, and the outer waterproof sealant layer and the permeable backing layer form a primary waterproof structure. The inner waterproof sealant layer and the waterproof backing layer form a secondary waterproof structure, and the interior of the primary waterproof structure is communicated with an anti-backflow valve in an inclined and downward mode. The waterproof performance of the building construction joint waterproof structure can be improved, the service life of the building construction joint waterproof structure can be prolonged, the maintenance period of the building construction joint waterproof structure is prolonged, and the maintenance cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of building engineering, especially a building construction joint waterproof structure. BACKGROUND

[0002] In the building construction joint, in order to realize waterproof purpose, need to construct waterproof structure at the construction joint, for example, need to set up waterproof structure at the horizontal and vertical construction joint between prefabricated outer wall, the construction joint between window frame and wall body, the construction joint between steel structure member etc.. The conventional waterproof structure is to fill foaming material at the construction joint and then construct mortar. Its defects are short service life, easy to occur leakage risk after long-term use, need to maintain the construction joint frequently, leading to high maintenance cost. SUMMARY

[0003] The utility model discloses a building construction joint waterproof structure to solve the short service life of traditional waterproof structure, the short maintenance period of the waterproof structure at the construction joint.

[0004] In order to solve the above technical problem, the utility model provides a technical scheme, which is a building construction joint waterproof structure, which comprises an outer waterproof sealant layer, a water-permeable backing layer, an inner waterproof sealant layer and a waterproof backing layer filled in the building construction joint from outside to inside in sequence, the outer waterproof sealant layer and the water-permeable backing layer form a primary waterproof structure, the inner waterproof sealant layer and the waterproof backing layer form a secondary waterproof structure, and the primary waterproof structure is internally connected with an anti-backflow valve door inclined downward.

[0005] Further, the building construction joint waterproof structure provided by the utility model is a horizontal construction joint.

[0006] Further, the building construction joint waterproof structure provided by the utility model is a vertical construction joint.

[0007] Further, the building construction joint waterproof structure provided by the utility model is an intersection construction joint formed by the intersection of a horizontal construction joint and a vertical construction joint, and the anti-backflow valve door is connected in the primary waterproof structure of the vertical construction joint.

[0008] Further, the inner and outer waterproof sealant layers of the building construction joint waterproof structure provided by the utility model are silicone sealant or two-component silicone modified sealant with low modulus.

[0009] Further, the water-permeable backing layer of the building construction joint waterproof structure provided by the utility model is a water-permeable foam stick.

[0010] Further, the waterproof backing layer of the building construction joint waterproof structure provided by the utility model is a polyethylene stick.

[0011] Further, the building construction joint waterproof structure provided by the utility model has the advantages that the thicknesses of the outer waterproof sealant layer, the water-permeable backing layer and the inner waterproof sealant layer are all 10 mm, and the thickness of the waterproof backing layer is 10 mm or 5 mm.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] The building construction joint waterproof structure provided by the utility model has the advantages that the two-way waterproof structure formed by the primary waterproof structure and the secondary waterproof structure is arranged in the building construction joint, the secondary waterproof structure plays a waterproof role after the primary waterproof structure in the building construction joint fails, thereby prolonging the service life of the building construction joint waterproof structure, prolonging the maintenance cycle of the building construction joint waterproof structure and reducing the maintenance cost.

[0014] The building construction joint waterproof structure provided by the utility model has the advantages that when the primary waterproof structure fails or leaks, the water leaking into the primary waterproof structure forms a drainage channel in the water-permeable backing layer and is discharged through the anti-backflow valve, thereby avoiding or reducing the influence of the water leaking into the primary waterproof structure on the secondary waterproof structure, thereby prolonging the service life of the secondary waterproof structure. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a plane structure schematic view of a prefabricated outer wall vertical construction joint waterproof structure;

[0016] Figure 2 is a plane structure schematic view of a prefabricated outer wall vertical construction joint waterproof structure;

[0017] Figure 3 is a perspective structure schematic view of a prefabricated outer wall cross construction joint waterproof structure;

[0018] Figure 4 is a plane structure schematic view of a prefabricated outer wall vertical construction joint waterproof structure;

[0019] Figure 5 is a perspective structure schematic view of a prefabricated outer wall cross construction joint waterproof structure;

[0020] The drawings show that:

[0021] 100, building construction joint waterproof structure, 101, outer waterproof sealant layer, 102, water-permeable backing layer, 103, inner waterproof sealant layer, 104, waterproof backing layer, 105, anti-backflow valve;

[0022] 200, rubber block;

[0023] 300, prefabricated outer wall;

[0024] 400, building construction joint;

[0025] 500 Metal exterior wall. DETAILED DESCRIPTION

[0026] The utility model will be described in detail below in combination with the drawings: the advantages and features of the utility model will be more clear according to the following description. It should be noted that the drawings are all very simplified and all use non-precise scale, only to facilitate, clearly assist the purpose of explaining the utility model embodiment.

[0027] Please refer to Figures 1 to 3 The utility model embodiment provides a kind of building construction joint waterproof structure 100, including by outer water-proof sealant layer 101, water-permeable backing layer 102, inner water-proof sealant layer 103 and waterproof backing layer 104 sequentially filled in building construction joint 400 from outside to inside, the outer water-proof sealant layer 101 and water-permeable backing layer 102 form first waterproof structure, the inner water-proof sealant layer 103 and waterproof backing layer 104 form secondary waterproof structure, the first waterproof structure is inclined downward in communication with anti-backflow valve 105.Joint 400 of building construction can be horizontal construction joint, it can also be vertical construction joint, horizontal construction joint and vertical construction joint intersect cross construction joint, wherein Figures 1 to 3 Exemplifies the building construction joint gap 400 formed by prefabricated outer wall 300, Figure 1 Exemplifies horizontal construction joint, Figure 2 Exemplifies vertical construction joint, Figure 3 Exemplifies cross construction joint.

[0028] The building construction joint waterproof structure 100 provided by the utility model embodiment is provided with two waterproof structures formed by first waterproof structure and secondary waterproof structure in building construction joint 400, the waterproof performance and service life of building construction joint waterproof structure 100 are improved by secondary waterproof structure, the maintenance cycle of building construction joint 400 gap waterproof structure is prolonged, and maintenance cost is reduced.

[0029] The building construction joint waterproof structure 100 provided by the utility model embodiment is waterproofed by secondary waterproof structure when first waterproof structure fails or leaks, and the water that leaks into the first waterproof structure forms a drainage channel in the water-permeable backing layer 102 and is discharged through the anti-backflow valve 105, thereby avoiding or reducing the impact of the water that leaks into the first waterproof structure on the secondary waterproof structure, thereby improving the service life of the secondary waterproof structure. The anti-backflow valve 105 can prevent rainwater from flowing back into the first waterproof structure, and the downward inclination of the anti-backflow valve 105 also prevents rainwater from flowing back into the first waterproof structure to some extent, avoids water from penetrating into the secondary waterproof structure, and further ensures the service life and waterproof performance of the secondary waterproof structure.

[0030] Please refer toFigure 3 In order to facilitate the water leakage to the primary waterproof structure, the building construction joint waterproof structure 100 provided by the utility model, the anti-backflow valve 105 is communicated in the primary waterproof structure of the vertical construction joint.

[0031] In order to improve the sealing performance, the building construction joint waterproof structure 100 provided by the utility model, the inner and outer waterproof sealant layer is the silicone sealant or the two-component silicone modified sealant with low modulus. The two-component silicone modified sealant with low modulus can produce corresponding deformation according to the change of the building construction joint, thereby improving the sealing performance. The inner and outer waterproof sealant layer forms the secondary sealant layer, thereby long-term and effective guarantee of light resistance and aging resistance of the inner and outer waterproof sealant layer.

[0032] In order to form the drainage channel in the water leakage to the primary waterproof structure in the water-permeable backing layer 102, the building construction joint waterproof structure 100 provided by the utility model, the water-permeable backing layer 102 is the foam rod capable of permeating water.

[0033] In order to improve the waterproof performance of the secondary waterproof structure, the building construction joint waterproof structure 100 provided by the utility model, the waterproof backing layer 104 is the polyethylene rod.

[0034] Please refer to Figures 1 to 3 In order to improve the waterproof performance of the building construction joint 400 formed by the prefabricated outer wall 300, the building construction joint waterproof structure 100 provided by the utility model, the thickness of the outer waterproof sealant layer 101, the water-permeable backing layer 102, the inner waterproof sealant layer 103 and the waterproof backing layer 104 can be 10mm, that is, the total thickness of the building construction joint waterproof structure is 40mm.

[0035] Please refer to Figures 4 to 5 The building construction joint waterproof structure 100 provided by the utility model is not limited to the building construction joint 400 formed between the prefabricated outer wall 300, but also can be the building construction joint 400 formed between the metal outer wall 500, wherein Figure 4 The vertical construction joint and the waterproof structure thereof are exemplified, Figure 5 The cross construction joint and the waterproof structure thereof are exemplified. At this time, the thickness of the waterproof backing layer 104 can be 5mm, that is, the total thickness of the building construction joint waterproof structure is 35mm.

[0036] The building construction joint waterproof structure 100 provided by the utility model is not only suitable for the building construction joint 400 formed between the prefabricated outer wall 300, but also suitable for the building construction joint 400 formed between the metal outer wall 500, and suitable for the building construction joint 400 between various types of outer walls and window frames, having the advantage of wide application range.

[0037] The building construction joint waterproof structure 100 is characterized in that the outer waterproof sealing glue layer 101 can be aligned on the outer surface of the building construction joint gap.

[0038] The utility model is not limited to the above specific implementation, obviously, the above described embodiment is a part of embodiment of the utility model embodiment, but is not all embodiment. Based on the described utility model embodiment, all other embodiments obtained by the person skilled in the art belong to the range of the utility model protection. The person skilled in the art can make other levels of modification and change to the utility model. Thus, if these modifications and changes of the utility model are within the scope of the claims of the utility model, the utility model also intends to include these changes and modifications.

Claims

1. A waterproof structure for construction joints, characterized in that: It includes an outer waterproof sealant layer, a permeable backing layer, an inner waterproof sealant layer and a waterproof backing layer which are sequentially filled in the construction joints of the building from the outside to the inside. The outer waterproof sealant layer and the permeable backing layer form a primary waterproof structure, and the inner waterproof sealant layer and the waterproof backing layer form a secondary waterproof structure. An anti-backflow valve is connected to the primary waterproof structure in an inclined downward direction.

2. The building construction joint waterproof structure according to claim 1, wherein: The construction joint is a horizontal construction joint.

3. The building construction joint waterproof structure according to claim 1, characterized in that: The building construction joint is a vertical construction joint.

4. The building construction joint waterproof structure according to claim 1, characterized in that: The building construction joint comprises a cross construction joint where a horizontal construction joint and a vertical construction joint intersect, and the anti-backflow valve is connected to a primary waterproof structure of the vertical construction joint.

5. The building construction joint waterproof structure according to claim 1, characterized in that: The inner waterproof sealant layer and the outer waterproof sealant layer are silicone sealant or two-component silicone modified sealant with low modulus.

6. The building construction joint waterproof structure according to claim 1, characterized in that: The water-permeable backing layer is a water-permeable foam rod.

7. The building construction joint waterproof structure according to claim 1, characterized in that: The waterproof backing layer is a polyethylene rod.

8. The building construction joint waterproof structure according to claim 1, characterized in that: The thickness of the outer waterproof sealant layer, the water-permeable backing layer and the inner waterproof sealant layer are all 10 mm, and the thickness of the waterproof backing layer is 10 mm or 5 mm.

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