Method for lapping vertical surfaces of macromolecular self-adhesive film waterproof coiled material and modified asphalt waterproof coiled material

By using thermoplastic concealed nails and nails to fix the vertical overlap of the polymer self-adhesive waterproof membrane and the modified bitumen waterproof membrane, the construction problem was solved, and a highly efficient waterproofing effect with universal materials and simple operation was achieved.

CN121992827APending Publication Date: 2026-05-08CSCEC-TAISEI CONSTR LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CSCEC-TAISEI CONSTR LTD
Filing Date
2024-11-07
Publication Date
2026-05-08

AI Technical Summary

Technical Problem

In existing construction methods, polymer self-adhesive waterproof membranes and modified bitumen waterproof membranes cannot be effectively overlapped on basement exterior walls, leading to construction difficulties.

Method used

Thermoplastic concealed nail tape is used to bond the hot-melt modified bitumen waterproof membrane, and the polymer self-adhesive waterproof membrane is fixed with nails. The modified bitumen waterproof membrane is then laid upward along the thermoplastic concealed nail tape to achieve vertical overlap of the two membranes.

Benefits of technology

The materials are universal and the process is simple, ensuring good waterproofing.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses a vertical face lap joint method for a macromolecular self-adhesive film waterproof coiled material and a modified asphalt waterproof coiled material. The foundation slab and the root of the outer wall are made of macromolecule self-adhesive film waterproof coiled materials, the outer wall is made of modified asphalt waterproof coiled materials, and the two coiled materials cannot be directly connected, so that the two coiled materials are connected through thermoplastic hidden nail belts. The free end of the macromolecule self-adhesive film waterproof roll and the thermoplastic hidden nail belt are tightly attached to the concrete outer wall together, the thermoplastic hidden nail belt is about 200 mm wide and is in a long strip shape, a through long groove is formed in the thermoplastic hidden nail belt, nail shooting holes are formed in the groove, and after the free end of the macromolecule self-adhesive film waterproof roll and the thermoplastic hidden nail belt are tightly attached to the concrete outer wall, nails are fixed in the groove. The outer wall modified asphalt waterproof coiled material is laid upwards from the lower portion of the hidden nail belt through a hot melting method (the hidden nail belt can be bonded with the modified asphalt waterproof coiled material after being heated), and finally the lower portion of the thermoplastic hidden nail belt is sealed through a sealing material. The method is simple to operate and good in waterproof effect.
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Description

Technical Field

[0001] This invention patent relates to the field of waterproofing construction of basement exterior walls, especially the case where the foundation slab is made of polymer self-adhesive waterproof membrane and the exterior wall is made of modified bitumen waterproof membrane with overlapping sections. Background Technology

[0002] With the increase in high-rise buildings and large public buildings, and the demand for underground space, basements and underground projects are becoming more and more common. Underground waterproofing is attracting more and more attention. The success of underground waterproofing is not only a basic requirement for the use of buildings or structures, but also affects the structural safety and service life of buildings to a certain extent. At the same time, it can also save investment, reduce project costs and reduce maintenance.

[0003] Polymer self-adhesive waterproof membranes are puncture-resistant, weather-resistant, self-healing, and possess excellent physical and chemical properties. They are now widely used in horizontal paving of underground waterproofing projects, but rarely in vertical underground facades (such as concrete exterior walls). Currently, most engineering designs still use modified bitumen waterproof membranes for facades. It is unavoidable in construction projects where the foundation slab uses polymer self-adhesive waterproof membranes and the exterior walls use modified bitumen waterproof membranes.

[0004] Currently, the only method for overlapping two different types of waterproofing membranes is to pre-leave the modified bitumen waterproofing membrane from the foundation pad layer upwards before the foundation slab is constructed. After the foundation slab is poured, the modified bitumen waterproofing membrane is then laid upwards along the exterior wall, thus achieving a smooth transition between the two different materials. While this method offers good waterproofing, if the modified bitumen waterproofing membrane is not pre-leaved during construction, a construction challenge arises when the polymer self-adhesive waterproofing membrane and the modified bitumen waterproofing membrane cannot be overlapped during the basement exterior wall waterproofing work.

[0005] To overcome the shortcomings of existing technologies, this invention patent discloses a method for overlapping polymer self-adhesive waterproof membrane and modified bitumen waterproof membrane on vertical surfaces. This method utilizes easily customizable thermoplastic concealed nail tape, employs commonly used engineering materials for the nails and sealing materials, and features simple operation and excellent waterproofing performance. Summary of the Invention

[0006] The technical problem this patent aims to solve is to address the shortcomings of existing construction methods by providing a method for overlapping polymer self-adhesive waterproof membrane and modified bitumen waterproof membrane on vertical surfaces. The technical solution adopted in this patent is as follows:

[0007] Step 1: Thermoplastic concealed nail tape, approximately 200mm wide, long strip shape, with a continuous groove on the surface and nail holes inside the groove. The thermoplastic concealed nail tape can be heated to bond well with hot melt modified bitumen waterproof membrane.

[0008] Step 2: Extend the polymer self-adhesive waterproof membrane from the base plate and stick it along the vertical surface to a height of about 1000mm, leaving a 150mm wide free end at the top horizontal edge.

[0009] Step 3: Fold the free end of the 150mm wide self-adhesive polymer waterproof membrane in half, attach the outer side of the waterproof membrane tightly to the thermoplastic concealed nail tape, and attach the inner side of the free end to the concrete exterior wall.

[0010] Step 4: After determining the location, start nailing from one side of the thermoplastic concealed nail strip. The nails pass through the polymer self-adhesive waterproof membrane and are directly fixed to the concrete exterior wall.

[0011] Step 5: Starting from the lower edge of the thermoplastic concealed nail strip, heat-melt the modified bitumen waterproof membrane upwards. After heating, the thermoplastic concealed nail strip can be well bonded and fixed to the modified bitumen waterproof membrane.

[0012] Note: If the basement exterior wall is made of two layers of waterproof membrane, the lower edge of the first layer of waterproof membrane should be located inside the thermoplastic concealed nail strip.

[0013] This patent has the following advantages: 1. The required materials are common engineering materials. 2. The operation method is simple. 3. It has a good waterproof effect. Attached Figure Description

[0014] Figure 1 Schematic diagram of the vertical overlap between polymer self-adhesive waterproof membrane and modified bitumen waterproof membrane.

[0015] Figure 2 Detailed drawings of the vertical overlap between polymer self-adhesive waterproof membrane and modified bitumen waterproof membrane. Detailed Implementation

[0016] Step 1: Thermoplastic concealed nail tape, approximately 200mm wide, long strip shape, with a continuous groove on the surface and nail holes inside the groove. The thermoplastic concealed nail tape can be heated to bond well with hot melt modified bitumen waterproof membrane.

[0017] Step 2: Extend the polymer self-adhesive waterproof membrane from the base plate and stick it along the vertical surface to a height of about 1000mm, leaving a 150mm wide free end at the top horizontal edge.

[0018] Step 3: Fold the free end of the 150mm wide self-adhesive polymer waterproof membrane in half, attach the outer side of the waterproof membrane tightly to the thermoplastic concealed nail tape, and attach the inner side of the free end to the concrete exterior wall.

[0019] Step 4: After determining the location, start nailing from one side of the thermoplastic concealed nail strip. The nails pass through the polymer self-adhesive waterproof membrane and are directly fixed to the concrete exterior wall.

[0020] Step 5: Starting from the lower edge of the thermoplastic concealed nail strip, heat-melt the modified bitumen waterproof membrane upwards. After heating, the thermoplastic concealed nail strip can be well bonded and fixed to the modified bitumen waterproof membrane.

[0021] Note: If the basement exterior wall is made of two layers of waterproof membrane, the lower edge of the first layer of waterproof membrane should be located inside the thermoplastic concealed nail strip.

Claims

1. A method for overlapping polymer self-adhesive waterproof membrane and modified bitumen waterproof membrane on a vertical surface, characterized in that... The process includes the following steps: Step 1: Apply thermoplastic concealed nail tape, approximately 200mm wide, in a long strip shape with a continuous groove containing nail holes. Heating the thermoplastic concealed nail tape allows it to bond well with the hot-melt modified bitumen waterproof membrane. Step 2: Extend the polymer self-adhesive waterproof membrane from the foundation slab along the vertical surface to a height of approximately 1000mm, leaving a 150mm wide free end at the top horizontal edge. Step 3: Fold the 150mm wide free end of the polymer self-adhesive waterproof membrane in half, and then fold the outer side of the waterproof membrane against the thermoplastic... Step 4: After determining the position, start nailing from one side of the thermoplastic concealed nail strip. The nail passes through the polymer self-adhesive waterproof membrane and is directly fixed to the concrete exterior wall. Step 5: Start hot-melt laying the modified bitumen waterproof membrane upwards from the lower edge of the thermoplastic concealed nail strip. After heating, the thermoplastic concealed nail strip can be well bonded and fixed to the modified bitumen waterproof membrane. If the basement exterior wall has two layers of waterproof membrane, the lower edge of the first layer of waterproof membrane should be located inside the thermoplastic concealed nail strip.

2. The method for overlapping polymer self-adhesive waterproof membrane and modified bitumen waterproof membrane on vertical surfaces according to claim 1, characterized in that... The required materials are general-purpose engineering materials.

3. The method for overlapping polymer self-adhesive waterproof membrane and modified bitumen waterproof membrane on vertical surfaces according to claim 1, characterized in that... The operation method is simple.

4. The method for overlapping polymer self-adhesive waterproof membrane and modified bitumen waterproof membrane on a vertical surface according to claim 1, characterized in that... It has good waterproof performance.