Construction method of cast-in-place concrete waterproof end

By binding fixing rods to the wall steel bars and pre-embedding the termination roll material, and combining it with the formwork structure for integrated pouring, the problems of unreliable fixing and poor sealing of traditional wall waterproof terminations are solved, achieving a highly efficient and reliable waterproof effect.

CN117231002BActive Publication Date: 2025-11-25CHINA CONSTR SEVENTH ENG DIVISION CORP LTD
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Patent Information

Application Number
CN202311155534.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-09-08
Publication Date
2025-11-25
Estimated Expiration
2043-09-08

AI Technical Summary

Technical Problem

Traditional wall waterproofing termination methods suffer from problems such as unreliable fixing, inadequate sealing, complex construction, low efficiency, and a high risk of leakage later on.

Method used

The method of using cast-in-place concrete for waterproof termination involves binding fixing rods to the wall's steel reinforcement structure and embedding the termination membrane in the concrete. It is then integrated with the formwork structure for unified pouring. Limiting rods and protective sleeves are used to protect the termination membrane, preventing it from falling off or shifting, thus simplifying the construction process.

Benefits of technology

It achieves internal fixation of the waterproof termination, improves sealing and reliability, simplifies the construction process, reduces the risk of leakage, and improves construction efficiency and resource utilization.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present application relates to the construction method of cast-in-place concrete waterproof end, relates to the technical field of building construction, including: S1: measurement and lashing wall steel bars, S2: end coil pretreatment, S3: formwork, S4: install fixed rod, S5: arrange end coil, S6: complete formwork, S7: wall pouring and vibrating, S8: formwork removal, wall decoration and site cleaning, S9: lay waterproofing membrane; The end coil is embedded in the wall according to the design height when pouring, and the wall steel bar structure and formwork structure are improved correspondingly, so that it is integrated with the wall pouring, realizes the internal fixation of waterproof material end, avoids the use of steel pressing strip, cement nail and sealant, effectively prevents the erosion of rain, vibration, wind and aging and other factors, solves the problem that the traditional end node is easy to open and fall off, and improves the life, sealing and reliability of the waterproof end node.
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Description

Technical Field

[0001] This invention relates to the field of building construction technology, specifically to a construction method for waterproof termination of cast-in-place concrete. Background Technology

[0002] During the construction of walls such as parapet walls, flat roof walls, and garage walls, waterproof membranes need to be used for waterproofing and to prevent rainwater or groundwater seepage from entering the room.

[0003] In traditional wall waterproofing roll-up construction, a groove is usually made at the required height on the wall, and then waterproof membrane is laid on the floor slab or ground. The waterproof membrane is then rolled up along the wall to the required height, and the edges or terminations are fixed in the pre-made groove using steel strips, cement nails, or metal flashing. However, these methods have some problems.

[0004] First, using the groove finishing method requires creating or pre-reserving grooves during construction so that the waterproofing material can be fixed inside them later. This increases the complexity and procedures of construction, requiring more time and precise operation, and also necessitates the use of other materials such as sealant to ensure a good seal.

[0005] Secondly, steel strips and cement nails are common fixing methods, but due to vibrations and external forces at the construction site, they are prone to loosening, falling off, or being damaged, causing the waterproof termination to lose its fixing and sealing effect. This may increase the risk of leakage later.

[0006] In addition, metal flashing covers have an added protective layer at the termination point, but their fixing and sealing also require special attention. Installing metal flashing covers requires specific fixing methods, such as bolting or welding, and also necessitates effective sealing with waterproofing materials to ensure waterproofing performance.

[0007] In general, traditional wall waterproofing termination methods fix the termination to the outer surface of the wall. The termination joint is always exposed to rain, vibration, wind, aging and other factors, which can cause the waterproof termination to open and fall off easily. It has problems such as unreliable fixation and poor sealing. Moreover, the construction is relatively slow, has many procedures, and there is a risk of leakage at the termination area later. It is difficult to guarantee the construction quality.

[0008] Therefore, it is necessary to study the construction methods for waterproof termination of cast-in-place concrete. Summary of the Invention

[0009] Therefore, the purpose of this invention is to provide a construction method for waterproof termination of cast-in-place concrete, which can effectively solve the problems of unstable fixing, poor sealing, and low on-site construction efficiency when waterproof membrane termination nodes are exposed to the external environment.

[0010] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0011] The construction method for waterproof termination of cast-in-place concrete is characterized by the following steps:

[0012] S1: Measure and lay out the lines and tie the wall reinforcement bars.

[0013] According to the design drawings and construction requirements, determine the location and boundary line of the wall, establish the baseline, and use the layout tool to tie the wall reinforcement at the predetermined position with reference to the baseline;

[0014] S2: Pre-treatment of the end of the roll material

[0015] Cut or make a hole at one end of the roll material, and tie the roll material to the fixing rod.

[0016] S3: Support template,

[0017] The template includes an inner template and an outer template, and the inner template includes an upper template and a lower template;

[0018] Referring to the baseline, support the outer formwork and lower formwork at the predetermined positions. The height of the lower formwork is the required height for waterproofing and upward turning.

[0019] S4: Install the fixing rod.

[0020] The fixing rod is horizontally fixed to the wall reinforcement, and the fixing height of the fixing rod is higher than the required height for waterproofing to turn up.

[0021] S5: Arrange the finishing roll material.

[0022] Drag the termination roll from above the lower formwork to the outside of the wall, dividing the termination roll into a pre-embedded part and an exposed part from the lower formwork position, tighten the termination roll, and protect the exposed part of the termination roll;

[0023] S6: Mold closing complete.

[0024] Install the template, position the end of the roll material in the joint between the upper and lower templates, and seal the joint.

[0025] Horizontal and vertical ribs are installed on the outside of the template, and finally the mold is closed by tie bolts.

[0026] S7: Wall pouring and vibration.

[0027] When pouring concrete, slow down the pouring speed and increase the vibration intensity when pouring to the pre-embedded part of the termination membrane to eliminate gaps and cavities and ensure that the pre-embedded part of the termination membrane is poured evenly.

[0028] S8: Demolding, wall decoration and site cleanup

[0029] After the concrete has set, remove the formwork, clean and trim the wall surface to ensure it is flat, smooth and meets the design requirements.

[0030] Retrieve construction tools and clean the floor surface;

[0031] S9: Lay waterproof membrane.

[0032] According to the construction requirements, waterproof membrane is laid on the floor slab, and the joints of the waterproof membrane are fixedly spliced ​​together with the exposed parts of the termination membrane.

[0033] Furthermore, the length of the exposed portion of the roll material at the end is greater than the height of the lower template.

[0034] Furthermore, after the wall and floor surfaces are treated and cleaned, the exposed portion of the termination membrane is bonded to the inner wall surface by hot-melt bonding and extends to the floor slab. When laying the waterproof membrane, the joints of the waterproof membrane overlap with the termination membrane and are fixed together by hot-melt welding.

[0035] Furthermore, the wall reinforcement is fixed with limiting rods, which are horizontally distributed between the fixing rods and the joint. When arranging the termination roll, the termination roll is wrapped around the lower end of the limiting rod and then continues to extend out from the joint.

[0036] Furthermore, multiple limiting rods are arranged at vertical intervals, and the roll material is wavy as it passes through the gaps between the limiting rods.

[0037] Furthermore, among the multiple limiting rods, the lower surface of the lowest limiting rod is on the same plane as the upper surface of the lower template, so that the end roll material remains horizontal at the joint.

[0038] Furthermore, both the limiting rod and the fixing rod are precast concrete columns.

[0039] Furthermore, it also includes protective sleeves, supports, and U-shaped lifting clamps;

[0040] When arranging the termination roll material, several supports are arranged at intervals along the wall on the floor slab, and the protective sleeve is placed on the supports. The protective sleeve has a protective inner cavity with an opening. The exposed part of the termination roll material is wound and fixed into a rod shape, and then inserted into the protective inner cavity through the opening. The protective inner cavity is adjusted so that the opening is tightly attached to the outer surface of the inner template.

[0041] When dismantling the formwork, first remove the upper formwork and outer formwork to expose the wall top. The U-shaped hanging clip has a U-shaped slot that matches the wall thickness. Hang the U-shaped hanging clip on the wall top through the U-shaped slot. Both the U-shaped hanging clip and the protective sleeve are equipped with lifting rings. Use the lifting rings and ropes to hoist the protective sleeve above the lower formwork. Then remove the support first, and then remove the lower formwork.

[0042] During wall decoration and site cleanup, remove the U-shaped hanging clips and protective sleeves, and unwrap the rolled-up end material that has been coiled into a rod shape.

[0043] Furthermore, the support includes an upper leg, a lower leg, and a base. The lower leg is slidably fitted into the upper leg and fixed by fastening screws, and the base is fixed to the upper end face of the upper leg.

[0044] Furthermore, during mold closing, the tie bolts are fitted with pre-embedded sleeves, and the positions of the tie bolts and pre-embedded sleeves avoid the pre-embedded part of the end roll material.

[0045] The beneficial effects of the above technical solution are:

[0046] (1) The present invention embeds the end-capping material into the wall during the wall pouring process according to the design height, and makes corresponding improvements to the wall reinforcement structure and template structure so that they are poured as an integral part of the wall. This achieves internal fixation of the waterproof material end cap, effectively preventing erosion from rain, vibration, wind and aging, solving the problem of easy opening and falling off of traditional end cap nodes, and improving the life, sealing and reliability of waterproof nodes.

[0047] (2) The present invention binds the end roll material to the fixing rod, and then binds the fixing rod to the wall reinforcement, so that the end roll material can be tightly and firmly embedded in the wall, avoiding the end roll material from being dragged off during construction, splicing and laying of waterproof roll material and other construction stages. At the same time, it avoids the erosion of wind, vibration and rainwater after construction and avoids falling off from the wall, thus improving the reliability of the pre-embedded node.

[0048] (3) This invention realizes the simultaneous construction of wall pouring and waterproof termination. After the wall is poured, there is no need to leave grooves on the structural wall columns, avoiding the use of steel strips, cement nails and sealant. The entire termination node can be reliably constructed simply by splicing the waterproof termination and waterproof membrane. No additional post-processing is required, which simplifies the construction process and improves construction efficiency. At the same time, it reduces the input of materials and personnel in the later stage, is green and environmentally friendly, saves resources and reduces costs.

[0049] (4) By arranging a limiting rod between the fixed rod and the joint, the end roll material is wrapped around the lower end of the limiting rod and then extended outward from the joint. This invention can avoid the problem that the end roll material will shift outward due to the extrusion of concrete during the pouring process, resulting in the problem that the pre-embedded depth is too shallow or even sticks to the template and fails to be pre-embedded. This invention can improve the firmness and reliability of the pre-embedded node.

[0050] (5) The present invention uses a protective sleeve to protect the end roll material. The exposed part of the end roll material is rolled up and fixed into a rod shape and placed in the protective sleeve. This can effectively protect and store the end roll material, and avoid pollution and damage to the end roll material during construction, especially during the pouring process.

[0051] Before removing the formwork, the protective sleeve is always placed on the support to facilitate the construction of other processes. When removing the formwork, the protective sleeve is hoisted with U-shaped clamps and the support is removed to facilitate the removal of the lower formwork. During the wall decoration, the protective sleeve can also be used alternately with the support and U-shaped clamps to avoid interference with the construction, thus improving the convenience of construction. Attached Figure Description

[0052] Figure 1 This is a front view of the present invention;

[0053] Figure 2 This is a side view schematic diagram of the present invention;

[0054] Figure 3 for Figure 2 A magnified view of the middle receiving node;

[0055] Figure 4 for Figure 3 Enlarged view of the central seam;

[0056] Figure 5 This is another implementation method for the head node;

[0057] Figure 6 for Figure 5 A schematic diagram showing the completion of the construction;

[0058] Figure 7 This is a method of protecting the end of the roll material;

[0059] Figure 8 This refers to the protective measures taken when removing the template.

[0060] Figure 9 A frontal view of the protective sleeve and support.

[0061] Attached diagram labels: 1 for wall, 2 for wall reinforcement, 3 for end-capping membrane, 4 for inner formwork, 5 for outer formwork, 6 for fixing rod, 7 for waterproof membrane, 8 for floor slab, 9 for limiting rod, 10 for protective sleeve, 11 for support, 12 for U-shaped hanger, 13 for lifting ring, 14 for lifting rope, 15 for embedded sleeve, 16 for tie bolt, 101 for inner wall surface, 102 for outer wall surface, 401 for upper formwork, 402 for lower formwork, 403 for joint, 1001 for protective inner cavity, 1101 for upper leg, 1102 for lower leg, 1103 for foundation, 1104 for fastening screw. Detailed Implementation

[0062] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0063] Example 1: This example aims to provide a construction method for waterproof termination of cast-in-place concrete. It is mainly used for relatively low walls such as parapet walls and flat roof walls, where the concrete protective layer of the wall is relatively thick. It addresses the problems of unreliable fixing, inadequate sealing, and low on-site construction efficiency caused by exposed waterproof membrane termination joints in the external environment.

[0064] The construction method for waterproof termination of cast-in-place concrete includes the following steps:

[0065] S1: Measure and lay out the lines and tie the wall reinforcement bars.

[0066] According to the design drawings and construction requirements, determine the location and boundary line of wall 1, establish a baseline, and use a line-laying tool to tie the wall reinforcement 2 at the predetermined position with reference to the baseline;

[0067] S2: Pre-treatment of the end of the roll material

[0068] The termination roll 3 is made of SBS waterproof material. One end of the termination roll 3 is cut or a hole is made. The termination roll 3 is then tied to the fixing rod 6.

[0069] S3: Support template,

[0070] The template includes an inner template 4 and an outer template 5. The inner template 4 includes an upper template 401 and a lower template 402.

[0071] Referring to the baseline, support the outer formwork 5 and the lower formwork 402 at the predetermined positions. The height of the lower formwork 402 is the required height for waterproofing and turning upwards. In this embodiment, the required height for waterproofing and turning upwards is 30cm, that is, the height of the lower formwork 402 is 30cm.

[0072] S4: Install the fixing rod.

[0073] The fixing rod 6 is horizontally fixed to the wall reinforcement 2 using the wire binding method, such as... Figure 3 Given the thickness of the concrete insulation layer, the fixing direction is towards the inner formwork 4 of the wall reinforcement 2. The fixing height of the fixing rod 6 is higher than the required height for waterproofing and turning up. In this embodiment, the fixing height is 40cm.

[0074] S5: Arrange the finishing roll material.

[0075] Drag the termination roll 3 from above the lower template 402 to the outside of the wall, and divide the termination roll 3 from the position of the lower template 402 into a pre-embedded part and an exposed part. The length of the exposed part is greater than the height required for waterproofing to turn up. In this embodiment, the exposed part is 60cm long. Tighten the termination roll 3 and protect the exposed part of the termination roll 3.

[0076] When arranging the termination roll 3, as follows Figure 7 Several supports 11 are arranged at intervals along the wall on the floor slab 8, and the protective sleeve 10 is placed on the supports 11; Figure 9 The protective sleeve 10 has a protective inner cavity 1001, and the protective inner cavity 1001 has an opening, such as... Figure 7 The exposed portion of the end roll 3 is wound and fixed into a rod shape, and inserted into the protective inner cavity 1001 through the opening. The protective inner cavity 1001 is adjusted so that the opening is tightly attached to the outer surface of the inner template 4.

[0077] The support 11 includes an upper leg 1101, a lower leg 1102, and a base 1103. The lower leg 1102 is slidably fitted in the upper leg 1101 and fixed by fastening screws 1104, which can realize height adjustment to adapt to different waterproof flip-up requirements. The base 1103 is fixed to the upper end face of the upper leg 1101 with screws.

[0078] The purpose of the protective sleeve 10 is to provide protection for the protective roll material, and the purpose of the support 11 is to provide support for the protective sleeve 10. In other embodiments, a stool, chair, etc. can be used. If the upward height is not high, the size of the protective sleeve 10 can be increased and the protective sleeve 10 can be placed directly on the ground.

[0079] S6: Mold closing complete.

[0080] Install template 401, such as Figure 3 , Figure 4 Position the termination roll 3 in the joint 403 between the upper and lower templates 402. Apply sealant to the joint 403 to seal it and ensure that there is no leakage of grout during pouring. Ensure the limiting firmness of the termination roll 3 at the joint 403 to reduce the displacement of the termination roll 3 at the joint 403 during pouring.

[0081] Horizontal and vertical ribs are installed outside the template, and finally the mold is closed by tie bolts 16. A pre-embedded sleeve 15 is fitted on the tie bolt 16. The positions of the tie bolt 16 and the pre-embedded sleeve 15 avoid the pre-embedded part of the end roll 3. In other embodiments, if it is inconvenient to avoid it, a hole needs to be opened in advance in the pre-embedded part of the end roll 3 for the pre-embedded sleeve 15 to pass through.

[0082] S7: Wall pouring and vibration.

[0083] Concrete pouring is carried out, starting from the bottom and gradually pouring the concrete to the predetermined height. Necessary vibration is performed to remove air bubbles and achieve compaction. When pouring to the pre-embedded part of the termination membrane 3, the pouring speed is slowed down and the vibration intensity is increased to eliminate gaps and cavities and ensure that the pre-embedded part of the termination membrane 3 is poured evenly.

[0084] S8: Demolding, wall decoration and site cleanup

[0085] After the concrete has fully set, the formwork should be removed. During removal, first remove the upper formwork 401 and the outer formwork 5 to expose the wall top. The U-shaped hanging clip 12 has a U-shaped groove that matches the thickness of the wall 1. Figure 8 The U-shaped hanging clip 12 is hung on the wall through the U-shaped slot. Both the U-shaped hanging clip 12 and the protective sleeve 10 are equipped with lifting rings 13. The protective sleeve 10 is hoisted above the lower formwork 402 by the lifting rings 13 and the lifting rope 14. Then, the support 11 is removed first, and then the lower formwork 402 is removed, so that the end roll material 3 is always in a protective state, and provides construction space for the removal of the lower formwork 402, which facilitates the construction.

[0086] During wall decoration, since the protective sleeve 10 is in a suspended state, the lower wall surface is decorated first, and then the protective sleeve 10 is supported by the support 11. The U-shaped hanging clip 12 is then removed. After that, the upper wall surface and the exterior wall are decorated. Check the wall surface for any damage, unevenness or non-compliance, and repair and adjust it to ensure that the wall surface is flat. Paint and patches are applied according to the design drawings. If necessary, sandpaper, grinding wheels or polishing machines are used to sand and polish the wall surface to make it smooth and uniform.

[0087] After the wall decoration is completed, the site is cleaned, the construction tools are collected, the surface of the floor slab 8 is cleaned to ensure that the floor slab 8 is clean and flat, then the protective sleeve 10 is removed and the rolled-up end material 3 is unwound into a rod shape.

[0088] S9: Lay waterproof membrane.

[0089] According to the construction requirements, waterproof membrane 7 is laid on floor slab 8, and the joints of waterproof membrane 7 are fixedly spliced ​​together with the exposed parts of termination membrane 3. Waterproof membrane 7 uses the same SBS waterproof material as termination membrane 3.

[0090] The portion of the termination membrane 3 extending beyond the precast concrete block is longer than the specified height for waterproofing. The exposed portion of the termination membrane 3 is bonded to the inner wall surface 101 by hot-melt bonding and extends to the floor slab 8, so that the joint point with the waterproof membrane 7 is located on the floor slab 8 rather than the wall 1. The termination membrane 3 and the waterproof membrane 7 are stacked one on top of the other and then fixed by hot-melt welding, which can further improve the firmness and continuity of the joint.

[0091] In other embodiments, if the length of the exposed portion of the termination membrane 3 is not greater than the required height for waterproofing roll-up, the waterproof membrane 7 needs to be rolled up to a certain height and hot-melt welded to the termination membrane 3 on the inner wall surface 101. In this case, it is best to cover the waterproof membrane 7 with the termination membrane 3 to avoid exposing the upper edge of the waterproof membrane 7.

[0092] Example 2 is basically the same as Example 1, except that this example is for cases where the concrete protective layer is thin. This example further describes the structure.

[0093] In this embodiment, since the concrete protective layer is relatively thin, when binding the fixing rod 6, the fixing rod 6 is bound to the inner surface of the wall reinforcement 2, specifically distributed between the wall reinforcement 2. In this embodiment, when the termination membrane 3 is pre-treated, corresponding avoidance holes need to be opened on the termination membrane 3 according to the structure of the wall reinforcement 2.

[0094] To further ensure the thickness and strength of the concrete in wall 1, the fixing rod 6 is a precast concrete column, thereby reducing the impact on the structure of the wall reinforcement 2 and the distribution of concrete thickness.

[0095] Example 3 is basically the same as Example 1, except that the embedded part of the termination roll 3 is additionally limited to prevent the embedded part from shifting during pouring, thus ensuring the embedded thickness and improving the firmness of the embedded node. This example further describes the structure.

[0096] During concrete pouring, due to pressure, the embedded portion of the termination membrane 3 is squeezed towards the inner formwork 4, resulting in a reduction in the embedded thickness. In some cases, the termination membrane 3 may even be squeezed to the point of being flush with the inner formwork 4, preventing concrete from being poured between the termination membrane 3 and the inner formwork 4, thus causing embedding failure. To address this issue, in this embodiment, as follows... Figure 5 Limiting rods 9 are fixed on the wall reinforcement 2. The limiting rods 9 are horizontally distributed between the fixing rod 6 and the joint 403. When arranging the termination roll 3, the termination roll 3 is wrapped around the lower end of the limiting rod 9 and then extended out from the joint 403, so that the termination roll 3 has a limit in the pre-embedded part, thereby ensuring that the termination roll 3 will not deviate excessively.

[0097] To further enhance the limiting effect of the end roll 3, three limiting rods 9 are arranged vertically at intervals, and the end roll 3 passes through the gap between each limiting rod 9 in a wave-like manner.

[0098] In order to ensure that the end roll 3 can pass horizontally through the joint 403, making the sealing process more effective and convenient, the lower surface of the bottom limiting rod 9 is on the same plane as the upper surface of the lower template 402, so that the end roll 3 remains horizontal at the joint 403.

[0099] To minimize the impact on the wall reinforcement structure and concrete thickness distribution, the limiting rod 9 is made of precast concrete column.

Claims

1. A construction method for waterproof termination of cast-in-place concrete, characterized in that: Includes the following steps: S1: Measure and lay out the lines and tie the wall reinforcement bars. According to the design drawings and construction requirements, determine the location and boundary line of the wall, establish the baseline, and use the layout tool to tie the wall reinforcement at the predetermined position with reference to the baseline; S2: Pre-treatment of the end of the roll material Cut or make a hole at one end of the roll material, and tie the roll material to the fixing rod. S3: Support template, The template includes an inner template and an outer template, and the inner template includes an upper template and a lower template; Referring to the baseline, support the outer formwork and lower formwork at the predetermined positions. The height of the lower formwork is the required height for waterproofing and upward turning. S4: Install the fixing rod. The fixing rod is horizontally fixed to the wall reinforcement, and the fixing height of the fixing rod is higher than the required height for waterproofing to turn up. S5: Arrange the finishing roll material. Drag the termination roll from above the lower formwork to the outside of the wall, dividing the termination roll into a pre-embedded part and an exposed part from the lower formwork position, tighten the termination roll, and protect the exposed part of the termination roll; S6: Mold closing complete. Install the template, position the end of the roll material in the joint between the upper and lower templates, and seal the joint. Horizontal and vertical ribs are installed on the outside of the template, and finally the mold is closed by tie bolts. S7: Wall pouring and vibration. When pouring concrete, slow down the pouring speed and increase the vibration intensity when pouring to the pre-embedded part of the termination membrane to eliminate gaps and cavities and ensure that the pre-embedded part of the termination membrane is poured evenly. S8: Demolding, wall decoration and site cleanup After the concrete has set, remove the formwork, clean and trim the wall surface to ensure it is flat, smooth and meets the design requirements. Retrieve construction tools and clean the floor surface; S9: Lay waterproof membrane. According to the construction requirements, waterproof membrane is laid on the floor slab, and the joints of the waterproof membrane are fixedly spliced ​​together with the exposed parts of the termination membrane. The wall reinforcement is fixed with limit rods, which are horizontally distributed between the fixing rods and the joint. When arranging the termination roll, the termination roll is wrapped around the lower end of the limit rod and then continues to extend out from the joint. The limiting rods are arranged at vertical intervals, and the roll material is wavy and passes through the gap between the limiting rods. Among the multiple limiting rods, the lower surface of the lowest limiting rod is on the same plane as the upper surface of the lower template, so that the end roll material remains horizontal at the joint.

2. The construction method for waterproof termination of cast-in-place concrete according to claim 1, characterized in that: The length of the exposed portion of the roll material at the end is greater than the height of the lower template.

3. The construction method for waterproof termination of cast-in-place concrete according to claim 2, characterized in that: After the wall and floor surfaces are treated and cleaned, the exposed portion of the termination membrane is bonded to the inner wall surface by hot-melt bonding and extends to the floor slab. When laying the waterproof membrane, the joint of the waterproof membrane overlaps with the termination membrane and is fixed together by hot-melt welding.

4. The construction method for waterproof termination of cast-in-place concrete according to claim 1, characterized in that: Both the limiting rod and the fixing rod are precast concrete columns.

5. The construction method for waterproof termination of cast-in-place concrete according to claim 1, characterized in that: It also includes protective sleeves, supports, and U-shaped lifting clamps; When arranging the termination roll material, several supports are arranged at intervals along the wall on the floor slab, and the protective sleeve is placed on the supports. The protective sleeve has a protective inner cavity with an opening. The exposed part of the termination roll material is wound and fixed into a rod shape, and then inserted into the protective inner cavity through the opening. The protective inner cavity is adjusted so that the opening is tightly attached to the outer surface of the inner template. When dismantling the formwork, first remove the upper formwork and outer formwork to expose the wall top. The U-shaped hanging clip has a U-shaped slot that matches the wall thickness. Hang the U-shaped hanging clip on the wall top through the U-shaped slot. Both the U-shaped hanging clip and the protective sleeve are equipped with lifting rings. Use the lifting rings and ropes to hoist the protective sleeve above the lower formwork. Then remove the support first, and then remove the lower formwork. During wall decoration and site cleanup, remove the U-shaped hanging clips and protective sleeves, and unwrap the rolled-up end material that has been coiled into a rod shape.

6. The construction method for waterproof termination of cast-in-place concrete according to claim 5, characterized in that: The support includes an upper leg, a lower leg, and a base. The lower leg is slidably fitted into the upper leg and fixed by fastening screws. The base is fixed to the upper end face of the upper leg.

7. The construction method for waterproof termination of cast-in-place concrete according to any one of claims 1-6, characterized in that: During mold closing, a pre-embedded sleeve is fitted onto the tie bolt, and the positions of the tie bolt and the pre-embedded sleeve avoid the pre-embedded part of the end roll material.

Citation Information

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