Long-acting sealing protection structure for building joint

Abstract

The utility model discloses a long-acting sealing protection structure of a building joint, which comprises two building base bodies and a joint located between the two building base bodies, the upper side of each building base body is sequentially provided with a protection layer and a sealant layer, the upper side of each sealant layer is provided with a covering layer covering the joint, the width of each covering layer is 3-10 times of the width of the joint and is not more than 200mm, and the width of each sealing layer is not more than 200mm. The protective layer and the sealant layer are formed by coating MS sealant, the thickness of the sealant layer is not smaller than 5 mm, and the width of the protective layer is larger than that of the sealant layer. According to the building seam sealing protection structure, the MS sealant and the SBS coiled material are used as main materials to form the building seam sealing protection structure, the good cohesiveness, durability, elongation and elastic recovery rate of the sealant layer are utilized, the SBS coiled material is matched to cope with stress changes in the SBS coiled material caused by thermal expansion and cold contraction of the building seam, reliable and durable sealing protection on the seam is achieved, and the service life of the building seam is prolonged. The problem that an existing building joint SBS coiled material sealing protection structure is wrinkled and snapped due to the action of internal stress, and sealing protection fails is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of building joint protection, and specifically relates to a long-term sealing and protection structure for building joints. Background Technique

[0002] During the construction of buildings, many joints are designed due to structural needs and building operation safety requirements, such as expansion joints, shrinkage joints, and dividing joints. The "Technical Code for Roofing Works" (GB 50345-2012) clearly requires that the joint sealing and waterproofing design should ensure that the sealed part does not leak water, and the joint sealing and waterproofing should match the main waterproof layer. While the joints play a role in structural protection, numerous water leakage hazards are still formed due to various factors. For example, the quality assurance period of the current waterproof project is 5 years, but the waterproof leakage problems of many building facades and roofs have long been common problems in the construction industry.

[0003] Most of the existing rigid protective layers on building roofs adopt the process of casting first and then dividing into joints. The dividing joints basically adopt the SBS coil hot melt bonding covering protection method. The SBS coil hot melt bonding covering structure is simple in construction and low in cost. Although it effectively solves the problem of cracking of the rigid protective layer, it can only play a certain waterproof role in the early stage of the building. As time goes by (such as 3 - 10 years), the SBS coil hot melt bonding covering layer is affected by the thermal expansion and contraction displacement of the joint, resulting in damage to the middle part of the joint due to stress, forming a potential risk of roof leakage. Content of the Utility Model

[0004] The purpose of the utility model is to provide a long-term sealing and protection structure for building joints to solve the problems put forward in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A long-term sealing and protection structure for building joints, including two building bases and a joint located between them. A protective layer and a sealant layer are successively arranged on the upper side of the building base. A covering layer covering the joint is arranged on the upper side of the two sealant layers. The width of the covering layer is 3 - 10 times the width of the joint and does not exceed 200 mm. The protective layer and the sealant layer are both formed by coating MS sealant, and the thickness of the sealant layer is not less than 5 mm. The width of the protective layer is greater than the width of the sealant layer.

[0006] Preferably, the part where the width of the protective layer is greater than the width of the sealant layer is not less than 50 mm.

[0007] Preferably, the covering layer is an SBS coil and the thickness is not less than 3 mm.

[0008] Preferably, the covering layer is a polymer coil or a metal plate.

[0009] Compared with the prior art, the beneficial effects of the utility model are as follows: The utility model mainly forms a building joint sealing and protection structure with MS sealant and SBS coil. By utilizing the good adhesion, durability, elongation rate and elastic recovery rate of the sealant layer, and cooperating with the SBS coil to cope with the stress change in the SBS coil caused by the thermal expansion and contraction of the building joint, reliable and durable sealing and protection of the joint are realized, and the problem of sealing and protection failure caused by wrinkling and breaking due to internal stress in the existing SBS coil sealing and protection structure for building joints is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic cross-sectional structure diagram of the utility model.

[0011] In the figure: 1, building substrate; 2, joint; 3, protective layer; 4, sealant layer; 5, covering layer. SPECIFIC EMBODIMENTS

[0012] Next, the technical solutions in the embodiments of the utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments.

[0013] Please refer to Figure 1 , the utility model provides a technical solution: A long-term sealing and protection structure for building joints, including two building substrates 1 and a joint 2 located between them. On the upper side of the building substrate 1, a protective layer 3 and a sealant layer 4 are successively provided. On the upper side of the two sealant layers 4, a covering layer 5 covering the joint 2 is provided. The covering layer 5 is any one of SBS coil, polymer coil, and metal plate. It is preferably an SBS coil and the thickness of the SBS coil is not less than 5 mm.

[0014] The width of the covering layer 5 is 3 to 10 times the width of the joint 2 and does not exceed 200 mm (that is, the a value is 3 to 10 times the b value and does not exceed 200 mm). The sealant layer 4 is formed by coating a multi-component MS sealant and its thickness is not less than 5 mm. The part of the protective layer 3 whose width is greater than the width of the sealant layer 4 is not less than 50 mm.

[0015] The construction process of this protection structure is as follows: Clean the surface of the building substrate 1 to remove dust, loose materials and other attached pollutants, and then brush the special primer for MS sealant on the concrete surface to form the protective layer 3. After it is completely dry, immediately scrape and apply a two-component MS sealant (such as ZQ301 prefabricated building sealant produced by Jiangsu Zhuoqi New Materials Co., Ltd., model F-25LM). The width c of the glue layer is 40 mm and the thickness is 3 to 5 mm to form the sealant layer 4. Before the surface of the sealant layer 4 dries, attach the SBS asphalt waterproof coil with a clean adhesive surface to the sealant layer 4 to form the covering layer 5.

[0016] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A long-term sealing protection structure for building joints, comprising two building substrates (1) and a joint (2) therebetween, characterized in that: The upper side of the building base (1) is provided with a protective layer (3) and a sealing glue layer (4) in sequence; a covering layer (5) covering the joint (2) is provided on the upper side of the two sealing glue layers (4); the width of the covering layer (5) is 3 to 10 times the width of the joint (2) and does not exceed 200 mm; the protective layer (3) and the sealing glue layer (4) are both formed by coating MS sealant and the thickness of the sealing glue layer (4) is not less than 5 mm; the width of the protective layer (3) is greater than the width of the sealing glue layer (4).

2. The long-term sealing and protective structure for building joints according to claim 1, characterized in that: The portion of the protective layer (3) that is wider than the sealant layer (4) is not less than 50 mm.

3. The long-term sealing protection structure for building joints according to claim 2 is characterized in that: The covering layer (5) is a SBS coil and has a thickness of not less than 3 mm.

4. The long-term sealing and protective structure for building joints according to claim 1 is characterized in that: The covering layer (5) is a polymer coil or a metal sheet.

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