Construction method for plugging outer side of screw hole of outer wall

Abstract

The invention relates to an outer wall screw hole outer side blocking construction method which comprises the steps that S1, outer wall screw hole blocking materials are prepared, and the outer wall screw hole blocking materials comprise a filling material, a primer and a blocking adhesive tape; s2, filling the outer wall screw hole with a filling material to seal the outer wall screw hole; s3, the pasting area is pretreated, the pasting area is a cleaning area formed by radiating outwards with the hole as the center, it is ensured that the hole is filled densely, and the surface of the hole is smooth; s4, the pasting area is coated with a primer, a plugging pasting belt is pasted, and rolling is carried out after pasting; and S5, after complete curing, a water spraying test is carried out, and the plugging quality is ensured. According to the method, the screw hole of the outer wall is firstly filled, the surface of the filling material and the outer surface of the screw hole of the outer wall are coated with the primer, then the plugging adhesive tape is pasted, and the screw hole of the outer wall is plugged through cooperation of the filling material and the plugging adhesive tape; the problem that in a traditional plugging mode, the plugging effect is poor due to the fact that the brushing thickness of polyurethane waterproof paint does not meet the requirement is solved, and the waterproof effect is greatly improved.

Description

Technical Field

[0001] The present invention relates to a construction method for plugging the outside of the wall screw holes, belonging to the technical field of construction. Background Art

[0002] During the construction of the above-ground structure exterior wall, holes are drilled to fix the formwork. After the formwork is removed, the remaining holes are the wall screw holes of the above-ground structure, which need to be plugged to ensure the waterproof performance of the exterior wall and the safety of the overall structure.

[0003] Currently, in building construction, there are mainly the following methods for plugging the wall screw holes of the above-ground structure: 1): The screw holes are plugged with cement mortar or filled with polyurethane foam, and a 1.5-mm-thick polyurethane waterproof coating is applied on the outdoor side. 2): The inside and outside of the wall are plugged with water-swellable rubber stoppers, and the holes are filled with cement mortar or polyurethane foam, and a 1.5-mm-thick polyurethane waterproof coating is applied on the outdoor side. 3): Prefabricated concrete cones are used inside the screw holes, and water-swellable rubber plugs are used at both ends, and a 1.5-mm-thick polyurethane waterproof coating is applied on the outdoor side.

[0004] However, during the hole filling of the existing filling methods, the most common problem at the construction site is that the filling inside the holes is not dense. Especially when filling with cement mortar or polyurethane foam, the operation of plugging with cement mortar is cumbersome, and it is difficult to ensure the density and uniformity of the plugging; although the polyurethane foam is easy to construct, it is prone to shrinkage after curing, resulting in gaps at the plugging part, affecting the waterproof effect. And generally, it is required to apply the polyurethane waterproof coating 3 times on the outdoor side, with a coating thickness of 1.5 mm. However, according to on-site investigations, most construction sites actually apply it 1 to 2 times, and the coating thickness is basically less than 1.5 mm, seriously affecting the waterproof effect of the wall. Due to the non-compliance of the coating thickness of the polyurethane waterproof coating, the color will fade and the polyurethane will fall off during subsequent long-term exposure, and the falling-off part needs to be recoated, resulting in additional costs. Summary of the Invention

[0005] The purpose of the present invention is to provide a construction method for plugging the outside of the wall screw holes to solve the above problems.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A construction method for plugging the outside of the wall screw holes, the construction method for plugging the outside of the wall screw holes includes:

[0007] S1: Prepare the plugging materials for the wall screw holes, including filling materials, primer, and plugging adhesive tapes;

[0008] S2: Fill the filling materials into the wall screw holes to seal the wall screw holes;

[0009] S3: Preprocess the pasting area, which is a cleaning area radiating outward with the hole as the center, to ensure that the inside of the hole is densely filled and the surface of the hole is flat;

[0010] S4: Apply a primer to the pasting area, and paste a sealing and bonding tape. After pasting, roll it;

[0011] S5: Conduct a water spray test after complete curing to ensure the plugging quality.

[0012] Further, the sealing and bonding tape is a butyl rubber waterproof sealing and bonding tape.

[0013] Further, the filling material is cement mortar or polyurethane foaming agent.

[0014] Further, in step S1, the butyl rubber waterproof sealing and bonding tape is cut into rectangular blocks of 100mm×100mm, and the chamfer of the rectangular block is a round chamfer.

[0015] Further, in step S2, when the filling material is cement mortar, after filling the external wall screw hole, level the cement mortar outside the external wall screw hole and perform a finishing treatment, and sprinkle water for curing after solidification.

[0016] Further, in step S4, the primer is acrylic glue.

[0017] Further, in step S4, a rolling bar is used to roll the sealing and bonding tape, the rolling pressure is not less than 0.2 Mpa, and the adhesion is judged by tearing a corner of the sealing and bonding tape.

[0018] Further, in step S4, the sealing and bonding tape is kept from shifting within 24 hours after bonding, and the complete curing time is 7 to 14 days.

[0019] The beneficial effects of the present invention are as follows: In this application, the external wall screw hole is first filled, and a primer is applied to the surface of the filling material and the outer surface of the external wall screw hole, and then a sealing and bonding tape is pasted. The external wall screw hole is plugged by the cooperation of the filling material and the sealing and bonding tape, solving the problem of poor plugging effect caused by the insufficient thickness of the polyurethane waterproof coating applied in the traditional plugging method, and greatly improving the waterproof effect.

[0020] The above description is only an overview of the technical solution of the present invention. In order to be able to understand the technical means of the present invention more clearly and implement it according to the content of the specification, the following takes the preferred embodiments of the present invention and combines with the drawings to describe in detail as follows. Brief Description of the Drawings

[0021] Figure 1 It is a flow chart of the construction method for plugging the outside of the external wall screw hole shown in an embodiment of the present application. Detailed Implementation Manner

[0022] The following combines the accompanying drawings and embodiments to further describe in detail the specific implementation manners of the present invention. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0023] In the description of the present invention, it should be noted that the orientation or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0025] Please refer to Figure 1 , the construction method for sealing the outer side of the external wall screw holes shown in an embodiment of the present application. This construction method for sealing the outer side of the external wall screw holes includes:

[0026] S1: Prepare the sealing materials for the external wall screw holes, including filling materials, primer, and sealing adhesive tapes;

[0027] S2: Fill the filling materials into the external wall screw holes to seal the external wall screw holes;

[0028] S3: Pretreat the pasting area. The pasting area is a cleaning area formed by radiating outward with the hole as the center, ensuring that the inside of the hole is filled densely and the surface of the hole is flat;

[0029] S4: Apply the primer to the pasting area and paste the sealing adhesive tapes, and roll them after pasting;

[0030] S5: Conduct a water spray test after complete curing to ensure the sealing quality.

[0031] In one embodiment, the plugging and pasting tape is a butyl rubber waterproof sealing and bonding tape, which is made by blending main raw materials such as butyl rubber and polyisobutylene. It is suitable for waterproof sealing of various civil roofs, color steel, steel structures, waterproof coiled materials, PC boards, etc. under sunlight irradiation, and is pasted through the external wall screw holes.

[0032] In one embodiment, the filling material is cement mortar or polyurethane foam.

[0033] In one embodiment, in step S1, the butyl rubber waterproof sealing and bonding tape is cut into a rectangular block of 100mm×100mm, and the chamfer of the rectangular block is a round chamfer. Before pasting the butyl rubber waterproof sealing and bonding tape, use a fine brush to clean the area to be pasted again, clean the dust and floating slurry around the hole opening, and the cleaning range is a 100mm×100mm area radiating from the center of the hole opening. Cutting the butyl rubber waterproof sealing and bonding tape into a rectangular block with a round chamfer can reduce the occurrence of edge lifting and other situations in the later stage.

[0034] In one embodiment, in step S2, the filling material is cement mortar. After filling the external wall screw hole, smooth the cement mortar outside the external wall screw hole and perform a finishing treatment. After solidification, sprinkle water for curing. It is best to use cement slurry without sand or with less sand content to smooth and finish, remove the excess mortar, and sprinkle water for curing after solidification to ensure that the inside of the hole is filled densely, and the surface at the hole opening is flat, clean, without sanding, and without cracking.

[0035] In one embodiment, in step S4, the primer is acrylic glue, and a layer of acrylic glue is applied to enhance the wettability and adhesion of the butyl rubber waterproof sealing and bonding tape.

[0036] In one embodiment, in step S4, a rolling rod is used to roll the plugging and pasting tape, and the rolling pressure is not less than 0.2 Mpa. The firmness of the adhesion is judged by tearing off a corner of the plugging and pasting tape. Tear off a corner of the butyl rubber waterproof sealing and bonding tape and observe whether the butyl rubber waterproof sealing and bonding tape detaches from the wall as a whole or the colloid of the butyl rubber waterproof sealing and bonding tape is completely bonded to the wall. If the tape colloid is completely bonded to the wall, it means the bonding is firm; otherwise, the bonding is not firm.

[0037] In one embodiment, in step S4, an appearance inspection is carried out on the plugged screw hole to ensure that the plugging is dense, flat, without obvious defects and holes, and the plugging and pasting tape does not shift within 24 hours after bonding. The complete curing time is 7 to 14 days.

[0038] In one embodiment, in step S5, after the butyl rubber waterproof sealing and bonding tape is completely cured, a water spray test is carried out to check the plugging effect. The specific requirements for the water spray test are as follows:

[0039] (1) Water pressure control: Ordinary exterior wall: 0.2 MPa - 0.3 MPa, corresponding head: 20 m - 30 m; Super high-rise building (building height > 100 m): 0.35 MPa - 0.4 MPa, pressure fluctuation range: ±5%, and a voltage stabilizing device is required for voltage stabilization.

[0040] (2) Spraying intensity: Vertical surface: ≥3 L / (m²·min); Horizontal joint: ≥5 L / (m²·min); Duration: Single point ≥30 minutes, overall ≥2 hours.

[0041] (3) Sprinkler layout: Spacing: Arranged in a 500 mm × 500 mm grid; Distance from the wall: 300 mm - 500 mm, forming a 30° incident angle; Flow control: 2.5 - 3.5 L / min for each sprinkler.

[0042] (4) Acceptance requirements: Process acceptance: Single-point spraying, set 3 detection points for every 100 m²; Sectional acceptance: Continuously spray a 20 m horizontal band for 1 hour; Comprehensive acceptance: Continuously spray the entire facade for a duration of = building height (m) / 10 (hours).

[0043] (5) Defect grade determination

[0044] Defect type Seepage rate Allowable range Processing requirements Micro-seepage <0.1mL / min ≤3 places / 100m2 Local grouting Line flow 0.1 - 1.0mL / min 0 Demolish and rebuild Dripping >1.0mL / min 0 Structural repair

[0045] The beneficial effects of the present invention are as follows: In this application, the exterior wall screw holes are first filled, and a primer is applied to the surface of the filling material and the outer surface of the exterior wall screw holes, and then a sealing tape is pasted. The exterior wall screw holes are sealed by the cooperation of the filling material and the sealing tape, solving the problem of poor sealing effect caused by the insufficient thickness of the polyurethane waterproof coating applied in the traditional sealing method, and greatly improving the waterproof effect.

[0046] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0047] The above-described embodiments only represent several implementation manners of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A method for sealing the outer side of an external wall screw hole, characterized in that: The outer side plugging construction method of the external wall screw hole comprises: S1: Prepare external wall screw hole sealing materials, including filling materials, primer and sealing adhesive tape; S2: Fill the filling material into the external wall screw hole to seal the external wall screw hole; S3: Pre-treat the pasting area. The pasting area is a clean area radiating outward from the hole as the center to ensure that the hole is densely filled and the hole surface is flat; S4: Apply primer to the pasting area, paste the blocking tape, and roll it after pasting; S5: After complete solidification, conduct a water test to ensure the quality of the sealing.

2. The outer side plugging construction method of the external wall screw hole according to claim 1, characterized in that: The sealing adhesive tape is a butyl rubber waterproof sealing adhesive tape.

3. The outer side plugging construction method of the external wall screw hole according to claim 1, characterized in that: The filling material is cement mortar or polyurethane foaming agent.

4. The outer side plugging construction method of the external wall screw hole according to claim 2, characterized in that: In step S1, the butyl rubber waterproof sealing adhesive tape is cut into a rectangular block of 100 mm x 100 mm, and the chamfer of the rectangular block is a rounded chamfer.

5. The outer side plugging construction method of the external wall screw hole according to claim 3, characterized in that: In step S2, the filling material is cement mortar. After filling the screw holes in the exterior wall, the cement mortar outside the screw holes in the exterior wall is smoothed and finished, and then watered and cured after solidification.

6. The outer side plugging construction method of the external wall screw hole according to claim 1, characterized in that: In step S4, the primer is acrylic glue.

7. The outer side plugging construction method of the external wall screw hole according to claim 6, characterized in that: In step S4, the sealing tape is rolled by a rolling rod with a rolling pressure of not less than 0.2 MPa, and whether the sealing tape is firmly adhered is determined by tearing off a corner of the sealing tape.

8. The outer side plugging construction method of the external wall screw hole according to claim 7, characterized in that: In step S4, the sealing tape is kept in place for 24 hours after bonding, and the complete curing time is 7 to 14 days.

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