Prefabricated asphalt-based polymer composite pre-paved waterproof coiled material
The innovative structure and construction method of precast asphalt-based polymer composite pre-laid waterproof membrane have solved the problem that traditional waterproof membranes cannot meet the new specifications, realizing low-carbon, environmentally friendly, fast and efficient underground waterproofing construction, and reducing construction costs and time.
Patent Information
- Application Number
- CN202423290177.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2034-12-31
AI Technical Summary
Existing technologies cannot meet the underground waterproofing requirements of the new standards. Traditional pre-laid reverse-adhesive waterproof membranes are complex to install, costly, and have poor waterproofing effects. Traditional coatings cannot be effectively bonded, resulting in long construction cycles and serious environmental problems.
The prefabricated asphalt-based polymer composite pre-laid waterproof membrane is constructed using a first isolation side membrane layer + a non-permanent PE membrane layer + a modified asphalt adhesive layer + a polyester base layer + a PET base membrane layer + a mineral granule layer + a second isolation side membrane layer. It is constructed using a pre-laid reverse adhesive method to achieve two waterproof layers in one step, and convenient overlapping is achieved by utilizing self-adhesive overlapping edges.
It achieves low-carbon, environmentally friendly, quick construction, and low-cost two-layer waterproofing in one step, meets the requirements of the new specifications, has a short construction period, and features strong overlap and good conformability.
Smart Images
Figure CN223937217U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of waterproofing construction technology, specifically relating to an asphalt-based polymer composite pre-laid waterproof membrane. Background Technology
[0002] The new standard "General Specification for Waterproofing of Building and Municipal Engineering" GB55030-2022 has been promulgated and implemented. This standard requires that underground waterproofing areas be constructed with no less than three layers, of which waterproof concrete counts as one layer, and no less than two external waterproofing layers. Single-layer pre-laid polymer self-adhesive waterproof membranes cannot meet the latest waterproofing requirements. Traditional pre-laid reverse-adhesive waterproof membranes are constructed using the pre-laid reverse-adhesive method. Single-layer construction of pre-laid asphalt-based waterproof membranes also cannot meet the new requirements. Traditionally, self-adhesion or hot-melt methods are used to connect two layers of membrane. Overlapping has drawbacks such as poor construction convenience, long waterproofing construction cycle, and environmental issues. Polymer pre-laid reverse-adhesive membranes conventionally use self-adhesive overlap edges for bonding. However, the high strength of the sheet makes it difficult to conform, and the high stress at the overlap edges leads to serious curling and opening phenomena in the later stage, affecting the waterproofing effect. Traditional coatings applied to the surface of pre-laid waterproof membranes cannot meet the requirements of full adhesion and water-resistant properties because they do not have the reverse-adhesive properties to the subsequently poured concrete. However, traditional coatings applied under the membrane layer cannot effectively bond with the membrane, so this solution cannot be applied.
[0003] One way to solve this problem is to install two waterproof layers underground. However, when constructing the waterproof layers separately, especially when constructing the basement floor slab, the construction environment is more complex. Laying two waterproof layers results in a longer construction period, consumes more labor hours, and leads to a significant increase in construction costs.
[0004] The purpose of this utility model is to address the problems of the prior art by providing a new type of precast asphalt-based polymer composite pre-laid waterproof membrane that is low-carbon, environmentally friendly, quick to construct, has a short construction period, and low overall cost. Utility Model Content
[0005] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a prefabricated asphalt-based polymer composite pre-laid waterproof membrane. When this new pre-laid waterproof membrane is used for underground waterproofing, it is constructed by pre-laying reverse bonding method. Only one construction is needed to meet the protection requirements of two waterproof layers in the new waterproofing specifications. Moreover, the construction is convenient, the construction period is short, and the waterproofing protection cost is significantly reduced.
[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:
[0007] A precast asphalt-based polymer composite pre-laid waterproof membrane, wherein the structure of the precast asphalt-based polymer composite pre-laid waterproof membrane, from bottom to top, is a first isolation side membrane layer (1) + non-permanent PE membrane layer (2), a first modified asphalt adhesive layer (3), a polyester base layer (4), a second modified asphalt adhesive layer (5), a PET base membrane layer / strong cross-laminated membrane layer (6), a third modified asphalt adhesive layer (7), a mineral granule layer (8) + a second isolation side membrane layer (9).
[0008] A further technical solution is that the polyester base layer is a type II polyester base fabric.
[0009] A further technical solution is that the isolation edge film layer has self-adhesive overlap edges reserved, and the width of the self-adhesive overlap edges is 8-10cm.
[0010] A further technical solution is that the thickness of the strong cross-linking film is 0.08-0.11mm, the thickness of the PET base film is 0.10-0.15mm, and the isolation edge film layer is a 0.030-0.045mm adhesive isolation film.
[0011] A further technical solution is that the thickness of the modified asphalt binder layer is 0.2-2mm.
[0012] A further technical solution is that the mineral granular material layer is any one of corundum, dyed quartz sand, washed river sand, or sintered sand.
[0013] A further technical solution is that the overall thickness of the roll material is 4.5-6.0mm.
[0014] In this invention, when the precast asphalt-based polymer composite pre-laid waterproof membrane is actually applied to underground waterproofing, the non-permanent PE film layer is laid loosely on the bottom and the concrete base slab is laid loosely. The mineral granule layer is laid on the top and the subsequently poured base slab concrete is pre-laid and reverse-bonded to achieve a full bonding effect.
[0015] In this invention, the side of the precast asphalt-based polymer composite pre-laid waterproof membrane along the length of the waterproof membrane is defined as the long side, and the side along the width of the waterproof membrane is defined as the short side.
[0016] The short-side overlap of the aforementioned mineral granule layer and the short-side overlap of the non-permanent PE film layer on the lower surface of the roll are in opposite directions, which is beneficial for the overlapping construction of two adjacent roll overlap edges.
[0017] In this invention, the aforementioned modified asphalt adhesive layer, polyester base layer, polymer base layer, and mineral granule layer can essentially constitute a pre-processed, pre-laid, reverse-adhesive waterproof membrane. This pre-laid waterproof membrane only requires one construction to meet the new waterproofing standard's requirement of two waterproofing layers. Furthermore, it is convenient to construct, has a short construction period, and significantly lower waterproofing costs. The reserved self-adhesive overlap edge allows for effective overlapping, good conformability, and a simple and quick overlapping method, resulting in a relatively strong bond.
[0018] In actual installation, the precast asphalt-based polymer composite pre-laid waterproof membrane of this utility model is directly laid loosely on the base surface of the underground project with the non-permanent PE film layer of the precast asphalt-based polymer composite pre-laid waterproof membrane. When laying adjacent waterproof membranes, the isolation film layer on the self-adhesive overlap edge reserved on the long side is removed and overlapped. That is, the self-adhesive overlap edge reserved on the lower side of the membrane is overlapped with the self-adhesive overlap edge reserved on the upper side of the adjacent membrane and then compacted with a pressure roller.
[0019] The beneficial effects of this utility model are as follows:
[0020] This utility model pre-processes and composites two layers of waterproof membrane together, both of which are 100% compatible with asphalt-based materials, forming a new type of pre-laid reverse-adhesive waterproof membrane. When used for underground waterproofing, this new type of pre-laid waterproof membrane is constructed using the pre-laid reverse-adhesive method, requiring only one construction to meet the protection requirements of two waterproof layers in the new waterproofing specifications. It is also convenient to construct, has a short construction period, significantly reduces waterproofing costs, and can simultaneously meet the requirements of the new underground waterproofing specifications. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the structure of the prefabricated asphalt-based polymer composite pre-laid waterproof membrane of this utility model;
[0022] Among them, (1) isolation side film layer; (2) non-permanent PE film layer; (3) first modified asphalt rubber layer; (4) polyester base layer; (5) second modified asphalt rubber layer; (6) PET base film layer / high-strength cross film layer; (7) third modified asphalt rubber layer; (8) mineral granule layer; (9) isolation side film layer.
[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Detailed Implementation
[0024] To make the objectives and technical solutions of this utility model clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate this utility model, but they are not intended to limit it.
[0025] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments. In the following embodiments, it should be noted that the terms "upper" and "lower" in the terminology refer to the orientation observed by the construction worker during the actual application of the precast asphalt-based polymer composite pre-laid waterproof membrane. For example, see the attached drawing. Figure 1 In the terminology, "upper" refers to... Figure 1 The upper direction in the middle, the term "lower" in the term refers to Figure 1 In the lower direction of the middle, during actual construction applications, the base surface is in Figure 1 On the lower side, waterproof concrete, etc. Figure 1 The orientation and positional relationship described in this utility model are only for the convenience of describing the utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, only have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0026] like Figure 1 As shown in the figure, this embodiment provides a prefabricated asphalt-based polymer composite pre-laid waterproof membrane.
[0027] Specifically, such as Figure 1 As shown, the precast asphalt-based polymer composite pre-laid waterproof membrane has the following structure from bottom to top: first isolation side membrane layer (1) + non-permanent PE membrane layer (2), first modified asphalt adhesive layer (3), polyester base layer (4), second modified asphalt adhesive layer (5), PET base membrane layer / strong cross membrane layer (6), third modified asphalt adhesive layer (7), mineral granule layer (8) + second isolation side membrane layer (9).
[0028] A further technical solution is that the polyester base layer is a type II polyester base fabric.
[0029] A further technical solution is that self-adhesive overlap edges are reserved on the opposite long sides of the non-permanent PE film layer and the mineral granule layer, and an isolation edge film layer is provided on the self-adhesive overlap edges, the width of the self-adhesive overlap edges being 8-10cm.
[0030] A further technical solution is that the thickness of the cross-film is 0.08-0.11mm, the thickness of the PET base film is 0.10-0.15mm, and the separation film layer is a 0.030-0.045mm adhesive separation film.
[0031] A further technical solution is that the thickness of the modified asphalt binder layer is 0.2-2mm.
[0032] A further technical solution is that the mineral granular material layer is any one of corundum, dyed quartz sand, washed river sand, or sintered sand.
[0033] A further technical solution is that the overall thickness of the roll material is 4.5-6.0mm.
[0034] A further technical solution involves pre-installing self-adhesive overlap edges on the opposite long sides of the non-permanent PE film layer and the mineral granule layer, with each self-adhesive overlap edge having an isolation film layer. Pre-installing self-adhesive overlap edges on both long sides allows for convenient overlapping of the precast asphalt-based polymer composite pre-laid waterproof membrane in the width direction. The membrane is laid loosely against the substrate of the underground project. When laying adjacent waterproof membranes, the isolation film layer on the pre-installed self-adhesive overlap edges on the long sides is removed for overlapping; that is, the isolation film on the opposite long sides of the non-permanent PE film layer and the mineral granule layer is removed, and then the membrane is overlapped and compacted with a pressure roller.
[0035] When using the precast asphalt-based polymer composite pre-laid waterproof membrane of this utility model, the lower surface of the membrane can be laid loosely on the base surface, leaving the overlap position. When laying adjacent membranes, the isolation film layer of the opposite overlap edge of the long side of the membrane is removed, and the membranes are overlapped. Concrete can be poured directly on the top side of the membrane. This precast asphalt-based polymer composite pre-laid waterproof membrane only requires one construction to meet the two-layer waterproofing requirements of the new waterproofing specifications. It is convenient to construct, has a short construction period, and significantly lower waterproofing costs. The reserved self-adhesive overlap edge allows for effective overlap, good conformability, simple and quick overlapping method, and relatively strong bonding.
[0036] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent changes made in accordance with the scope of the present utility model application are still within the scope of the present utility model.
Claims
1. A precast bitumen-based polymer composite pre-laid waterproof membrane, characterized in that, The precast asphalt-based polymer composite pre-laid waterproof membrane structure consists of, from bottom to top, a first isolation side membrane layer (1) + a non-permanent PE membrane layer (2), a first modified asphalt adhesive layer (3), a polyester base layer (4), a second modified asphalt adhesive layer (5), a PET base membrane layer / strong cross-laminated membrane layer (6), a third modified asphalt adhesive layer (7), a mineral granule layer (8) + a second isolation side membrane layer (9).
2. The precast bitumen-based polymer composite pre-laid waterproof membrane according to claim 1, characterized in that: The polyester base layer is a type II polyester base fabric.
3. The precast bitumen-based polymer composite pre-laid waterproof membrane according to claim 1, characterized in that: The isolation membrane layer has self-adhesive overlap edges reserved, and the width of the self-adhesive overlap edges is 8-10cm.
4. The precast bitumen-based polymer composite pre-laid waterproof membrane according to claim 1, characterized in that: The thickness of the high-strength cross-linked film is 0.08-0.11 mm, the thickness of the PET base film is 0.10-0.15 mm, and the isolation edge film layer is a 0.030-0.045 mm adhesive isolation film.
5. The precast bitumen-based polymer composite pre-laid waterproof membrane according to claim 1, characterized in that: The thickness of the modified asphalt binder layer is 0.2-2 mm.
6. The precast bitumen-based polymer composite pre-laid waterproof membrane according to claim 1, characterized in that: The mineral granular material layer is any one of corundum, dyed quartz sand, washed river sand, or sintered sand.
7. The precast bitumen-based polymer composite pre-laid waterproof membrane according to claim 1, characterized in that: The overall thickness of the roll material is 4.5-6.0 mm.