Prefabricated module vertical abutted seam waterproof structure capable of controlling facade error

Abstract

The utility model discloses a waterproof structure for a vertical abutted seam of a prefabricated module capable of controlling a facade error, which is arranged on a single-box prefabricated module and comprises wide pressure grooves arranged at the top and the bottom of the single-box prefabricated module, and a water guide groove arranged on the single-box prefabricated module, the top and the bottom of the single-box prefabricated module are in a tongue-and-groove shape, and the wide pressing groove is formed in the tongue-and-groove position of the single-box prefabricated module. Vertical abutted seams are formed between the single-box prefabricated modules; the water guiding grooves are formed in the planes, on the vertical abutted seams, of the single-box prefabricated modules. Gaps capable of being filled and leveled are reserved in the stacked modules, the water guide grooves are formed in the vertical abutted seams to form the cavities to drain accumulated water, and the wide pressing grooves and the vertical abutted seams are subjected to waterproof treatment through the PE rods, the waterproof sealant, the waterproof mortar and the glass fiber nets; the module vertical face can be adjusted, double guarantee of the waterproof structure and the waterproof material is achieved, waterproof and drainage can be achieved, the service life of the module building is prolonged, and durability of the module building is improved.

Description

Technical Field

[0001] The embodiments of the utility model belong to the technical field of prefabricated module joint waterproof structures, and more specifically, to a prefabricated module vertical joint waterproof structure capable of controlling facade errors. Background Art

[0002] Prefabricated modular buildings are a type of building that prefabricates most of the building components required for the construction process in a factory, and then makes final assembly adjustments to the connections between the modules at the construction site. This reduces material waste caused by on-site construction and avoids building quality problems caused by improper human operation during the construction and assembly process, thereby increasing the speed of construction while ensuring quality.

[0003] In modular building construction, there is still a certain risk of water leakage in the joints between modules. Due to the construction accuracy and the influence of the temperature and humidity of the storage air on the modules, the flatness of the module facade will be affected to a certain extent. As a result, when constructing prefabricated modular buildings, the facades will be uneven, affecting the appearance and function of the building. In outdoor or humid environments, water leakage between the joints will cause erosion of the interior of the building, and water leakage can easily cause mold growth, affecting the integrity and durability of the building structure, thereby shortening the service life of the building itself.

[0004] At present, in order to reduce the risk of water leakage at the joints, sealants, waterproof membranes, and waterproof coatings are usually used to waterproof the joints. In addition, the waterproof effect of the joints can be increased by designing different notch structures at the module connections. Various technologies can be used. For example, waterproof membranes, sealants, and waterproof coatings are used to seal the joints to prevent water from penetrating. In addition, special flanges or notch structures can be designed to enhance the sealing of the joints.

[0005] However, in the actual construction process, due to installation errors between adjacent modules, the modules are not on the same plane, resulting in the sealant being unable to seal tightly and the waterproofing failing.

[0006] How to improve the cracking, unevenness, water leakage and the like caused by the prefabricated modules during transportation, module assembly and the like in engineering practice is a technical problem to be solved by the utility model. Utility Model Content

[0007] In view of the above defects or improvement needs of the prior art, the utility model provides a waterproof structure at the vertical joints of prefabricated modules that can control the facade errors. By arranging tongues and grooves at the top and bottom of the prefabricated modules, and opening wide pressure grooves at the tongues and grooves, and arranging water guide grooves at the joints of the prefabricated modules close to the outer wall, when the modules are spliced, the corresponding water guide grooves between adjacent modules are connected to form a cavity, thereby completing the collection and discharge of water leakage at the vertical joints of the prefabricated modules.

[0008] In order to achieve the above-mentioned purpose, the utility model provides a waterproof structure for vertical joints of prefabricated modules capable of controlling facade errors, which comprises:

[0009] Wide pressing grooves provided at the top and bottom of the single-box prefabricated module, and water guide grooves provided at the vertical joint surface of the single-box prefabricated module;

[0010] The top and bottom of the single-box prefabricated module are both tongue-shaped, and the wide pressing groove is arranged at the tongue of the single-box prefabricated module;

[0011] Vertical joints are provided between the single-box prefabricated modules;

[0012] The water guide trough is arranged on the plane of the vertical joint of the single-box prefabricated module.

[0013] Furthermore, the water guide groove is a semicircular groove with a diameter of 20-40 mm and runs through the top and bottom;

[0014] When the single-box prefabricated modules are stacked and connected in the vertical direction, the water guide grooves can be connected through;

[0015] Adjacent water guide grooves are correspondingly combined to form a cavity;

[0016] The cavity is only provided on the single-box prefabricated module close to the exterior wall.

[0017] Furthermore, the single-box prefabricated module is provided with a wide pressing groove of 120mm-200mm;

[0018] The wide pressing groove is 10-20 mm below the horizontal height of the outer surface of the single-box prefabricated module.

[0019] Furthermore, when the single-box prefabricated modules are laid out horizontally and connected, the vertical seam width does not exceed 20 mm.

[0020] Furthermore, when the single-box prefabricated modules are stacked in the vertical direction, a gap of 15-20 mm is reserved between the upper and lower modules for leveling the internal errors during the construction process.

[0021] Furthermore, PE rods are arranged at the joints of the single-box prefabricated modules.

[0022] Furthermore, waterproof sealants are provided at both ends of the PE rod.

[0023] Furthermore, a waterproof mortar is filled in the wide pressing groove provided in the single-box prefabricated module close to the outer wall, and a glass fiber mesh is laid on the wide pressing groove together with the waterproof mortar.

[0024] Furthermore, the waterproof mortar is polymer cement waterproof mortar, which is used for filling and leveling the wide pressure groove.

[0025] Furthermore, when the single-box prefabricated module is prefabricated and shipped out of the factory, except for the grooved portion which is not pretreated, the rest of the outer surface of the single-box prefabricated module 1 is coated with a layer of waterproof coating;

[0026] After the waterproof mortar and the glass fiber mesh are filled and leveled, waterproof putty is applied on their surfaces;

[0027] The laying range of the waterproof putty is not less than the construction range of the waterproof mortar.

[0028] In general, the above technical solutions conceived by the utility model can achieve the following beneficial effects compared with the prior art:

[0029] (1) The utility model provides a waterproof structure for the vertical joints of prefabricated modules that can control facade errors. By reserving a gap of 15-20 mm for the modules stacked up and down and filling waterproof mortar to achieve error leveling during module construction, the modules are placed on the same plane, thereby ensuring the effectiveness of structural waterproofing.

[0030] (2) The utility model provides a waterproof structure for vertical joints of prefabricated modules capable of controlling facade errors. By setting vertical joints between adjacent modules and providing water guide grooves on the modules close to the exterior wall, a cavity is formed when the modules are spliced, which is connected from top to bottom, thereby ensuring the outflow of water accumulated between the vertical joints of the modules;

[0031] (3) The utility model is a prefabricated module vertical joint waterproof structure that can control the facade error. By opening a tongue and groove at the top and bottom of the module and setting a wide groove near the joint surface, the joint is waterproofed by "PE rod-waterproof sealant"; the wide groove is filled and leveled with waterproof mortar and glass fiber mesh to enhance the waterproofness of the joint; the waterproof coating is pre-applied to the module before it leaves the factory, and waterproof putty is applied to an area not less than the wide groove and the vertical joint during on-site construction, and the waterproof coating is strengthened at the intersection of the pre-applied waterproof coating; so that the waterproof structure achieves the beneficial effect of "external water blocking and internal drainage". The durability and service life of the modular building are improved to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1This is a schematic structural diagram of a waterproof structure at a vertical joint of a prefabricated module capable of controlling facade errors according to an embodiment of the utility model;

[0033] Figure 2 This is a schematic diagram of a single-layer module combination in a waterproof structure at a vertical joint of a prefabricated module capable of controlling facade errors according to an embodiment of the utility model;

[0034] Figure 3 This is a schematic diagram of the structure of the horizontal module junction in the waterproof structure of the vertical joint of the prefabricated module capable of controlling the facade error according to an embodiment of the utility model;

[0035] Figure 4 This is a schematic diagram of the structure of the vertical module junction in a waterproof structure at the vertical joint of a prefabricated module capable of controlling the facade error according to an embodiment of the utility model;

[0036] Figure 5 A waterproof structure for vertical joints of prefabricated modules capable of controlling facade errors according to an embodiment of the utility model Figure 4 The enlarged structural diagram at A in the middle;

[0037] Figure 6 The utility model is a construction flow chart of a waterproof structure at vertical joints of a prefabricated module capable of controlling facade errors according to an embodiment of the utility model.

[0038] In all the drawings, the same reference numerals represent the same technical features, specifically:

[0039] 1-single box prefabricated module, 2-wide pressing groove, 3-water guide groove, 4-vertical joint, 5-cavity, 6-exterior wall of prefabricated module, 7-interior wall of prefabricated module, 8-exterior wall of second prefabricated module, 9-PE rod, 10-waterproof sealant, 11-waterproof mortar, 12-fiberglass mesh, 13-waterproof putty. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. In addition, the technical features involved in each embodiment of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0041] It should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0042] like Figure 1 , 2 As shown, the embodiment of the utility model provides a waterproof structure at the vertical joint of a prefabricated module that can control the facade error, which is applicable to single-box prefabricated modules 1 of different specifications and sizes, and its structure specifically includes:

[0043] Wide pressing grooves 2 are arranged at the top and bottom of the single-box prefabricated module 1, and water guide grooves 3 are arranged at the joint surface between the single-box prefabricated module 1 and the adjacent single-box prefabricated modules 1.

[0044] Specifically, the top and bottom of the single-box prefabricated module 1 are both tongue-shaped, and the wide pressing groove 2 is provided at the tongue of the single-box prefabricated module 1;

[0045] The water guide groove 3 is a semicircular groove lower than the joint plane of the single-box prefabricated module 1, which is used to conduct water leakage generated by adjacent single-box prefabricated modules 1 in the vertical direction, so as to facilitate the timely discharge of water seeping from the vertical joints of the stacked single-box prefabricated modules 1;

[0046] When the single-box prefabricated modules 1 are arranged and connected in the horizontal direction, vertical joints 4 are generated between adjacent single-box prefabricated modules 1;

[0047] The water guide groove 2 is arranged on the plane of the vertical joint 4 of the single-box prefabricated module 1 close to the outer wall, and the water guide groove 2 is close to the wide pressed groove 2 of the outer wall surface of the single-box prefabricated module 1.

[0048] like Figure 3 As shown, in the embodiment of the utility model, the single-box prefabricated modules 1 are arranged and combined in the horizontal direction, and a vertical joint 4 is provided at the intersection of adjacent single-box prefabricated modules 1;

[0049] The two sides of the single-box prefabricated module 1 are respectively a prefabricated module outer wall 6 and a prefabricated module inner wall 7;

[0050] When the single-box prefabricated module 1 is prefabricated and shipped out of the factory, except for the groove pressing part which is not pretreated, the outer surface of the rest of the module is coated with a layer of waterproof coating;

[0051] The vertical joint 4 is provided with a water guide groove 3 on one side close to the outer wall surface 6 of the prefabricated module, and the tongue and groove of the single-box prefabricated module 1 is provided at the connection between the outer wall surface 6 of the prefabricated module and the vertical joint;

[0052] The water guide groove 3 and the corresponding water guide groove 3 on the adjacent single-box prefabricated module 1 form a cavity 5 at the vertical joint 4;

[0053] The water guide groove 3 may be a semicircular groove with a diameter of 20-40 mm running through the top and bottom;

[0054] Preferably, the width of the wide pressing groove 2 provided at the tongue and groove of the single-box prefabricated module 1 is 120mm-200mm, and the level of the wide pressing groove 2 provided at the tongue and groove is about 10-20mm lower than the outer wall surface 6 of the prefabricated module;

[0055] The vertical joint 4 provided at the junction of the single-box prefabricated modules 1 has a size not exceeding 20 mm;

[0056] The single-box prefabricated module 1 includes, in addition to the wide pressing groove 2 and the water guide groove 3, a waterproof unit, which includes:

[0057] A PE rod 9 stuck in the vertical joint 4, a waterproof sealant 10 provided at both ends of the PE rod 9, a waterproof mortar 11 for filling the vertical joint 4 with the waterproof sealant 10 and the wide slot 2, a glass fiber mesh 12 laid and pressed together with the waterproof mortar 11, and a waterproof putty 13 provided at the filled and repaired wide slot 2.

[0058] The PE rod 9 is a flexible support for supporting the waterproof sealant 10, waterproof mortar 11 and glass fiber mesh 12;

[0059] Preferably, the waterproof sealant 10 is a weather-resistant waterproof sealant, which is used to seal and isolate the vertical joints 4 from the outer wall 6 of the prefabricated module and the inner wall 7 of the prefabricated module, respectively, thereby preventing water molecules in the air from entering the interior of the modular building through the vertical joints 4, and the sealing material can adapt to various environmental conditions and maintain its sealing performance;

[0060] Preferably, the waterproof mortar 10 is used in combination with the glass fiber mesh 12, and the vertical joints 4 treated with the waterproof sealant 10 are treated with the waterproof mortar 10, so that after the waterproof mortar 10 repairs the wide pressure groove 2, the wide pressure groove 2 filled with the waterproof mortar 10 is in the same plane as the outer wall surface 6 of the prefabricated module, and the waterproof mortar 10 is pressed into the glass fiber mesh 12 to further strengthen the bonding force of the waterproof mortar 10 at the wide pressure groove 2, and also facilitate the attachment of the waterproof putty 13 to the waterproof mortar 10;

[0061] Preferably, the waterproof mortar 10 is a polymer cement waterproof mortar, so that it can better bond and resist cracking while filling and leveling the wide pressure groove 2 and ensure its waterproof durability;

[0062] The waterproof putty 13 needs to be laid on site after the waterproof mortar 11 and the glass fiber mesh 12 are completely dry, and its laying range needs to exceed the construction area of ​​the vertical joints 4 and the wide pressure grooves 2, and cover the intersection with the waterproof coating pre-laid when the single-box prefabricated module 1 leaves the factory.

[0063] like Figure 4 , 5 As shown, in the embodiment of the utility model, the

[0064] The single-box prefabricated modules 1 are arranged and combined in the vertical direction, and a vertical joint 4 is provided at the junction of the single-box prefabricated modules 1;

[0065] The outer surfaces of the single-box prefabricated module 1 are respectively a prefabricated module outer wall surface 6 and a second prefabricated module outer wall surface 8, and the interior of the single-box prefabricated module 1 is a prefabricated module inner wall surface 7;

[0066] When the single-box prefabricated module 1 is prefabricated and shipped out of the factory, except for the grooved portion which is not pretreated, the rest of the outer surfaces of the single-box prefabricated module 1 are coated with a layer of waterproof coating;

[0067] The vertical joint 4 is provided with a water guide groove 3 on one side close to the outer wall surface 6 of the prefabricated module and the outer wall surface 8 of the second prefabricated module, respectively, and the outer wall surface 6 of the prefabricated module and the outer wall surface 8 of the second prefabricated module are respectively connected with the vertical joint 4 with a tongue and groove of the single-box prefabricated module 1;

[0068] The water guide groove 3 and the corresponding water guide groove 3 on the adjacent single-box prefabricated module 1 form a cavity 5 at the vertical joint 4;

[0069] The water guide groove 3 may be a semicircular groove with a diameter of 20-40 mm running through the top and bottom;

[0070] Preferably, the width of the wide pressing groove 2 provided at the tongue and groove of the single-box prefabricated module 1 is 120mm-200mm, and the level of the wide pressing groove 2 provided at the tongue and groove is about 10-20mm lower than the outer wall surface 6 of the prefabricated module;

[0071] The vertical joint 4 provided at the junction of the single-box prefabricated modules 1 has a size not exceeding 20 mm;

[0072] When the single-box prefabricated module 1 is stacked, a gap of 15-20 mm needs to be reserved above and below for leveling of construction errors;

[0073] The single-box prefabricated module 1 includes, in addition to the wide pressing groove 2 and the water guide groove 3, a waterproof unit, which includes:

[0074] A PE rod 9 stuck in the vertical joint 4, a waterproof sealant 10 provided at both ends of the PE rod 9, a waterproof mortar 11 for filling the vertical joint 4 with the waterproof sealant 10 and the wide slot 2, a glass fiber mesh 12 laid and pressed together with the waterproof mortar 11, and a waterproof putty 13 provided at the filled and repaired wide slot 2.

[0075] The PE rod 9 is a flexible support for supporting the waterproof sealant 10, waterproof mortar 11 and glass fiber mesh 12;

[0076] Preferably, the waterproof sealant 10 is a weather-resistant waterproof sealant, which is used to seal and isolate the vertical joints 4 from the outer wall 6 of the prefabricated module and the inner wall 7 of the prefabricated module, respectively, thereby preventing water molecules in the air from entering the interior of the modular building through the vertical joints 4, and the sealing material can adapt to various environmental conditions and maintain its sealing performance;

[0077] Preferably, the waterproof mortar 10 is used in combination with the glass fiber mesh 12, and the vertical joints 4 treated with the waterproof sealant 10 are treated with the waterproof mortar 10, so that after the waterproof mortar 10 repairs the wide pressure groove 2, the wide pressure groove 2 filled with the waterproof mortar 10 is in the same plane as the outer wall surface 6 of the prefabricated module, and the waterproof mortar 10 is pressed into the glass fiber mesh 12 to further strengthen the bonding force of the waterproof mortar 10 at the wide pressure groove 2, and also facilitate the attachment of the waterproof putty 13 to the waterproof mortar 10;

[0078] Preferably, the waterproof mortar 10 is a polymer cement waterproof mortar, so that it can better bond and resist cracking and ensure its waterproof durability while filling and leveling the wide pressure groove 2;

[0079] The waterproof putty 13 needs to be laid on site after the waterproof mortar 11 and the glass fiber mesh 12 are completely dry, and its laying range needs to exceed the construction area of ​​the vertical joints 4 and the wide pressure grooves 2, and cover the intersection with the waterproof coating pre-laid when the single-box prefabricated module 1 leaves the factory.

[0080] The single-box prefabricated module 1 can collect the leaked water between adjacent modules through the cavity 5, so that the leaked water can be discharged by gravity through the water guide groove 3 that runs through the upper and lower parts. When the single-box prefabricated modules 1 are stacked, the 15-20mm gaps reserved at the upper and lower parts can be filled with the waterproof mortar 11 to achieve the waterproof sealing effect while leveling the adjacent modules, thereby reducing the error between the modules and making the module building facade flat; while ensuring the horizontal sealing, the waterproofness of the internal tongue and groove is also guaranteed.

[0081] like Figure 6 As shown, in another embodiment of the utility model, a construction process of a waterproof structure at a vertical joint of a prefabricated module capable of controlling a facade error is provided, which specifically includes the following steps:

[0082] S100: According to the project construction requirements, complete the statistics of the number and specifications of the precast concrete modules, determine the specifications of the precast concrete modules for the exterior wall, open the top and bottom of the module into a tongue-and-groove shape, set a 120mm-200mm wide groove according to the size of the module, and pre-apply a layer of waterproof coating to the module before leaving the factory;

[0083] S200: When stacking modules, leave a gap of 15-20mm; make sure the groove width of adjacent vertical joints is not less than 260mm;

[0084] S300: inserting a PE rod into the gap between adjacent modules, with both ends of the PE rod being clamped to the contact surface between the prefabricated module and the outside respectively;

[0085] S400: Fill the two ends of the PE rod and the compression joint with waterproof sealant, set polymer cement waterproof mortar at the gap, and lay glass fiber mesh to the compression joint surface;

[0086] S500: After completing the previous step of waterproofing, carry out on-site construction of waterproof putty paint on the exterior walls around the vertical joints, and connect them with the original waterproof coating to provide waterproof reinforcement.

[0087] Specifically, during the construction process, the single-box prefabricated module is stacked up and down with a gap of no more than 20 mm reserved, so that when the module is stacked, the facade can be leveled by filling with waterproof mortar, thereby reducing the error of the module building facade handover;

[0088] And by setting water guide grooves at the vertical joints of adjacent modules, a cavity is formed after the joints are joined, so that water leakage generated at the joints can be discharged after the modular building is put into use;

[0089] The vertical joints are sealed layer by layer by setting up "PE rod-waterproof sealant-waterproof mortar-glass fiber mesh-waterproof putty", and wide pressure grooves are set at the top and bottom tongue and groove of the module, so that when the vertical joints are sealed, the waterproofing between the joints and the modules can also be completed, and the waterproof mortar is used to adjust the flatness of the joints to ensure the durability of the waterproof structure.

[0090] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A waterproof structure for vertical joints of prefabricated modules capable of controlling facade errors, the structure being installable on single-box prefabricated modules (1) of different specifications and sizes, characterized in that: include: Wide pressing grooves (2) provided at the top and bottom of the single-box prefabricated module (1), and water guide grooves (3) provided at the vertical joint surface of the single-box prefabricated module (1); The top and bottom of the single-box prefabricated module (1) are both in a tongue-and-groove shape, and the wide pressing groove (2) is arranged at the tongue-and-groove of the single-box prefabricated module (1); Vertical joints (4) are provided between the single-box prefabricated modules (1); The water guide groove (3) is arranged on the plane of the single-box prefabricated module (1) at the vertical joint (4).

2. The waterproof structure for vertical joints of prefabricated modules capable of controlling facade errors according to claim 1 is characterized in that: The water guide groove (3) is a semicircular groove with a diameter of 20-40 mm and runs through the top and bottom; When the single-box prefabricated modules (1) are stacked and connected in a vertical direction, the water guide grooves (3) can be connected through; Adjacent water guide grooves (3) are correspondingly combined to form a cavity (5); The cavity (5) is only provided on the single-box prefabricated module (1) close to the outer wall.

3. A waterproof structure for vertical joints of prefabricated modules capable of controlling facade errors according to claim 2, characterized in that: The single-box prefabricated module (1) is provided with a wide pressing groove (2) of 120 mm to 200 mm; The wide pressing groove (2) is 10-20 mm below the horizontal height of the outer surface of the single-box prefabricated module (1).

4. A waterproof structure for vertical joints of prefabricated modules capable of controlling facade errors according to claim 3, characterized in that: When the single-box prefabricated modules (1) are laid out and connected in a horizontal direction, the width of the vertical joint (4) does not exceed 20 mm.

5. A waterproof structure for vertical joints of prefabricated modules capable of controlling facade errors according to claim 4, characterized in that: When the single-box prefabricated modules (1) are stacked in the vertical direction, a gap of 15-20 mm is reserved between the upper and lower modules for leveling the internal errors during the construction process.

6. The waterproof structure for vertical joints of prefabricated modules capable of controlling facade errors according to claim 5 is characterized in that: Also includes: A PE rod (9) is arranged at the joint of the single-box prefabricated module (1).

7. The waterproof structure for vertical joints of prefabricated modules capable of controlling facade errors according to claim 6, characterized in that: Also includes: Waterproof sealants (10) are provided at both ends of the PE rod (9).

8. The waterproof structure for vertical joints of prefabricated modules capable of controlling facade errors according to claim 7, characterized in that: Also includes: A waterproof mortar (11) is filled in a wide pressing groove (2) provided in the single-box prefabricated module (1) close to the outer wall, and a glass fiber mesh (12) is laid on the wide pressing groove (2) together with the waterproof mortar (11).

9. The waterproof structure for vertical joints of prefabricated modules capable of controlling facade errors according to claim 8, characterized in that: The waterproof mortar (11) is a polymer cement waterproof mortar, and is used to fill and level the wide pressure groove (2).

10. The waterproof structure for vertical joints of prefabricated modules capable of controlling facade errors according to claim 9, characterized in that: Also includes: When the single-box prefabricated module (1) is prefabricated and shipped out of the factory, except for the grooved portion which is not pretreated, the rest of the outer surface of the single-box prefabricated module (1) is coated with a layer of waterproof coating; After the waterproof mortar (11) and the glass fiber mesh (12) are filled and leveled, a waterproof putty (13) is applied on their surfaces; The laying range of the waterproof putty (13) is not less than the construction range of the waterproof mortar (11).

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