Waterproof roll lap joint and air tightness detection integrated construction method, waterproof layer and building

Abstract

The invention discloses a waterproof coiled material lap joint and air tightness detection integrated construction method, a waterproof layer and a building, electric heating wires are laid in lap joint areas between adjacent waterproof coiled materials, continuous large current is firstly applied to the electric heating wires, so that the electric heating wires rapidly heat to heat and melt the inner surfaces of the waterproof coiled materials in the lap joint areas, and meanwhile, the inner surfaces of the waterproof coiled materials in the lap joint areas are heated and melted; applying pressure to the outer surface of the waterproof coiled material in the lap joint area by using a tool, so that the upper and lower layers of waterproof coiled materials in the lap joint area are tightly bonded together, after a certain period of time, applying pulse type micro-current to the heating wire and detecting the current change rate, if the current change rate is within a threshold value, judging that the air tightness of the lap joint area is qualified, and if not, judging that the air tightness of the lap joint area is qualified. If the current change rate exceeds the threshold value, it is judged that a cavity exists in the lap joint area, and continuous large current is conducted on the electric heating wire again to heat and melt the portion, in the cavity, of the waterproof coiled material so that seam filling can be achieved. The method avoids open fire operation, does not depend on artificial experience, is convenient to operate, can perform air tightness detection after laying, and is timely and efficient in detection and simple in seam filling.

Description

Technical Field

[0001] The invention belongs to the technical field of building engineering waterproofing, and particularly relates to an integrated construction method for waterproof coiled material lapping and airtightness detection, a waterproof layer, and a building. Background Art

[0002] In the construction of waterproof projects, most of them are carried out by pasting waterproof coiled materials. In the construction of waterproof coiled materials, the lapping part is often the most vulnerable part with construction defects, and the construction quality of the lapping part directly determines the overall construction quality of the waterproofing.

[0003] In current construction, the lapping of waterproof coiled materials mostly uses a flame gun or hot air welding, which requires open fire operation and has great potential safety hazards; moreover, the quality of hot melt welding depends on manual experience, and a small leakage can cause later leakage, resulting in high maintenance costs; most importantly, the quality of the construction cannot be detected in real time after the construction is completed, and the quality of the waterproof construction cannot be effectively guaranteed. Summary of the Invention

[0004] The purpose of the invention is to provide an integrated construction method for waterproof coiled material lapping and airtightness detection, a waterproof layer obtained by the above construction method, and a building including the above waterproof layer. This method avoids open fire operation, does not rely on manual experience, is easy to operate, can perform airtightness detection immediately after laying, the detection is timely and efficient, and the seam filling is simple.

[0005] The technical solution adopted by the invention is as follows: An integrated construction method for waterproof coiled material lapping and airtightness detection. An electric heating wire is laid in the lapping area between adjacent waterproof coiled materials. First, a continuous large current is applied to the electric heating wire to quickly heat the inner surface of the waterproof coiled material in the lapping area to melt it. At the same time, a tool is used to apply pressure to the outer surface of the waterproof coiled material in the lapping area, so that the upper and lower layers of the waterproof coiled material in the lapping area are tightly bonded together. After a certain period of time, a pulsed microcurrent is applied to the electric heating wire and the current change rate is detected. If the current change rate is within the threshold, it is determined that the airtightness of the lapping area is qualified. If the current change rate exceeds the threshold, it is determined that there is a cavity in the lapping area, and a continuous large current is applied to the electric heating wire again to melt the waterproof coiled material in the cavity part to achieve seam filling.

[0006] Preferably, after seam filling, a pulsed microcurrent is continuously applied to the electric heating wire and the current change rate is detected. If the current change rate is within the threshold, it is determined that the airtightness of the lapping area is qualified. If the current change rate still exceeds the threshold, the waterproof coiled material at the current position is replaced and re-laid.

[0007] Preferably, the heating wire is laid in a zigzag pattern, with both ends of the heating wire extending out of the overlapping area and both sides inside the overlapping area, and the distance between the edge of the heating wire and the edge of the overlapping area is less than 5mm.

[0008] Preferably, while hot-melting the waterproof membrane, pressure rollers are used to roll back and forth on the outer surface of the waterproof membrane in the overlapping area to apply pressure.

[0009] Preferably, when hot-melt waterproof membrane is required, the current flowing through the heating wire is 8-10A.

[0010] Preferably, when it is necessary to determine the airtightness of the overlapping area, the current flowing through the heating wire is 100 mA.

[0011] Preferably, the waterproof membrane is an SBS modified bitumen waterproof membrane.

[0012] Preferably, the heating wire is made of nickel-chromium material.

[0013] A waterproof layer is obtained by the above-mentioned integrated construction method of overlapping waterproof membrane and air tightness testing.

[0014] A building comprising the aforementioned waterproof layer.

[0015] The beneficial effects of this invention are: This method utilizes electric heating to heat-melt the waterproof membrane, avoiding open flame operations. Furthermore, it only requires adjusting to a suitable current level, eliminating the need for manual experience and making operation convenient. The same heating wire serves as both a heater and a sensor; after heat melting, the rate of current change detected by the heating wire is used as a criterion for judging the airtightness of the waterproof membrane. Airtightness testing can be performed immediately after installation, ensuring timely and efficient detection. Moreover, if a cavity is detected in the overlapping area, the heating wire can be used to repair it, simplifying the process and avoiding increased costs associated with subsequent repairs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram showing the separation of the heating wire and the adjacent waterproof membrane in this invention.

[0017] In the diagram: 1-Waterproof membrane; 2-Heating wire; 3-Overlapping area. Detailed Implementation

[0018] The present application will be further described below with reference to the accompanying drawings and embodiments.

[0019] Example 1 This embodiment discloses an integrated construction method for waterproof membrane overlap and airtightness testing, including the following steps: S1) A heating wire 2 is laid in the overlapping area 3 between adjacent waterproof membranes 1. A continuous large current is passed through the heating wire 2 to make it heat up quickly and melt the inner surface of the waterproof membrane 1 in the overlapping area 3. At the same time, pressure is applied to the outer surface of the waterproof membrane 1 in the overlapping area 3 using a tool, so that the upper and lower layers of waterproof membrane 1 in the overlapping area 3 are tightly bonded together.

[0020] S2) After a certain period of time, a pulsed micro-current is applied to the heating wire 2 and the rate of change of the current is detected. If the rate of change of the current is within the threshold, the airtightness of the overlapping area 3 is deemed to be qualified. If the rate of change of the current exceeds the threshold, it is determined that there is a cavity in the overlapping area 3 (when the airtightness of the upper and lower waterproof membrane 1 is not qualified, there must be a cavity in the path of the heating wire, and the cavity will affect the rate of change of the current). Then, a continuous large current is applied to the heating wire 2 again to heat and melt the waterproof membrane 1 in the cavity part to achieve the filling. After filling, a pulsed micro-current is applied to the heating wire 2 and the rate of change of the current is detected. If the rate of change of the current is within the threshold, the airtightness of the overlapping area 3 is deemed to be qualified. If the rate of change of the current still exceeds the threshold, the waterproof membrane 1 at the current position is replaced and re-laid.

[0021] This method utilizes electric heating to heat-melt the waterproof membrane 1, avoiding open flame operations. Furthermore, it only requires adjusting to a suitable current level, eliminating the need for manual experience and making operation convenient. Moreover, the same heating wire 2 serves as both a heater and a sensor. After heat melting, the rate of current change detected by the heating wire is used as the criterion for judging the airtightness of the waterproof membrane 1. Airtightness testing can be performed immediately after installation, ensuring timely and efficient detection. Furthermore, if a cavity is found in the overlapping area 3, it can be repaired using the heating wire 2, simplifying the repair process and avoiding increased costs associated with subsequent maintenance.

[0022] In this embodiment, preferably: Figure 1 As shown, the heating wire 2 is laid in a zigzag pattern, with both ends of the heating wire 2 extending out of the overlapping area 3 and both sides inside the overlapping area 3. The distance between the edge of the heating wire 2 and the edge of the overlapping area 3 is less than 5mm.

[0023] In this embodiment, preferably, while hot-melting the waterproof membrane 1, pressure rollers are used to roll back and forth on the outer surface of the waterproof membrane 1 in the overlapping area 3 to apply pressure.

[0024] In this embodiment, preferably, when hot-melt waterproof membrane 1 is required, the current flowing through the heating wire 2 is 8-10A.

[0025] In this embodiment, preferably, when it is necessary to determine the airtightness of the overlapping area 3, the current flowing through the heating wire 2 is 100mA.

[0026] In this embodiment, preferably, the waterproof membrane 1 is an SBS modified bitumen waterproof membrane.

[0027] In this embodiment, preferably, the heating wire 2 is made of nickel-chromium material.

[0028] Example 2 This embodiment discloses a waterproof layer obtained by the integrated construction method of waterproof membrane overlap and airtightness testing in Embodiment 1 above.

[0029] Example 3 This embodiment discloses a building that includes the waterproof layer described in Embodiment 2 above. It can be a high-value building with particularly high waterproof performance requirements, such as a museum, library, archive, or villa, or an industrial building with special waterproof requirements.

[0030] The embodiments described above are some, but not all, of the embodiments of this application. The detailed description of the embodiments of this application is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

Claims

1. A construction method integrating waterproof membrane overlap and airtightness testing, characterized in that: An electric heating wire is laid in the overlapping area between adjacent waterproof membranes. A continuous high current is first passed through the heating wire to rapidly heat it up and melt the inner surface of the waterproof membrane in the overlapping area. At the same time, pressure is applied to the outer surface of the waterproof membrane in the overlapping area using a tool, so that the upper and lower layers of waterproof membrane in the overlapping area are tightly bonded together. After a certain period of time, a pulsed micro-current is passed through the heating wire and the rate of current change is detected. If the rate of current change is within the threshold, the airtightness of the overlapping area is deemed to be qualified. If the rate of current change exceeds the threshold, it is determined that there is a cavity in the overlapping area, and a continuous high current is passed through the heating wire again to heat and melt the waterproof membrane in the cavity, thereby achieving the filling of the gap.

2. The integrated construction method for waterproof membrane overlap and airtightness testing as described in claim 1, characterized in that: After the seam is repaired, a pulsed microcurrent is applied to the heating wire and the rate of change of the current is monitored. If the rate of change of the current is within the threshold, the airtightness of the overlapping area is deemed to be qualified. If the rate of change of the current still exceeds the threshold, the waterproof membrane at the current location is replaced and re-laid.

3. The integrated construction method for waterproof membrane overlap and airtightness testing as described in claim 1, characterized in that: The heating wire is laid in a zigzag pattern, with both ends of the heating wire extending out of the overlapping area and both sides inside the overlapping area. The distance between the edge of the heating wire and the edge of the overlapping area is less than 5mm.

4. The integrated construction method for waterproof membrane overlap and airtightness testing as described in claim 1, characterized in that: While applying the hot-melt waterproof membrane, pressure rollers are used to roll back and forth on the outer surface of the waterproof membrane in the overlapping area to apply pressure.

5. The integrated construction method for waterproof membrane overlap and airtightness testing as described in claim 1, characterized in that: When hot-melt waterproof membrane is required, the current passing through the heating wire is 8-10A.

6. The integrated construction method for waterproof membrane overlap and airtightness testing as described in claim 1, characterized in that: When it is necessary to determine the airtightness of the overlapping area, the current flowing through the heating wire is 100 mA.

7. The integrated construction method for waterproof membrane overlap and airtightness testing as described in claim 1, characterized in that: The waterproof membrane is made of SBS modified bitumen.

8. The integrated construction method for waterproof membrane overlap and airtightness testing as described in claim 1, characterized in that: The heating wire is made of nickel-chromium material.

9. A waterproof layer, characterized in that: It is obtained by the integrated construction method of waterproof membrane overlap and airtightness testing as described in any one of claims 1 to 8.

10. A building, characterized in that: It includes the waterproof layer as described in claim 9.

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