Anti-cracking structure applied to abutted seam of cement fiberboards of outer wall

By constructing a base structure and hot-dip galvanized steel pipes at the joints of cement fiberboard, combined with sealant and putty filling, the problem of easy cracking at cement fiberboard joints was solved, achieving flatness and waterproofing of the exterior wall.

CN223907796UActive Publication Date: 2026-02-13SHANGHAI MUNICIPAL ENG DESIGN INST (GRP) CO LTD
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Patent Information

Application Number
CN202520361393.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-03
Publication Date
2026-02-13
Estimated Expiration
2035-03-03

AI Technical Summary

Technical Problem

Cement fiberboard joints are susceptible to cracks caused by external forces or environmental factors, affecting surface flatness and allowing rainwater to enter and damage the internal materials.

Method used

The structure consists of a base wall, horizontal and vertical hot-dip galvanized steel pipes, adhesive, cement fiberboard, waterproof putty, and a stone-like paint finish. It is combined with neutral silicone weather-resistant sealant and external wall sealant, and fiberglass mesh to enhance crack resistance.

Benefits of technology

It effectively prevents cracking of cement fiberboard joints, maintains the flatness and integrity of building exterior walls, prevents water from entering the interior, and is suitable for various exterior wall cement fiberboard joints.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an anti-cracking structure applied to an outer wall cement fiberboard abutted seam, which sequentially comprises a base layer structure wall body, a transverse hot-dip galvanized steel through pipe, an adhesive, a cement fiberboard, waterproof putty and a real stone paint surface layer from inside to outside, and a neutral silicone weather-proof sealant and outer wall joint sealing putty are sequentially filled in the joint joints on the cement fiberboard from inside to outside. Under the condition that the surface flatness is guaranteed, the effect of preventing cracking at the abutted seams of the boards can be achieved, cracks can be effectively prevented from being formed, the flatness and integrity of the facade of the building outer wall are guaranteed, water is prevented from entering the interior due to the fact that the abutted seams of the cement fiberboards of the outer wall crack, batch application and construction can be achieved, and the construction efficiency is improved. The method is suitable for splicing various outer wall cement fiberboards.
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Description

TECHNICAL FIELD

[0001] The utility model belongs to building design technical field, concretely relates to a kind of anti-cracking structure applied to cement fiber board joint of outer wall. BACKGROUND

[0002] In building facade decoration, cement fiber board is usually used as outer wall decoration material, and the board is formed into a complete wall by unit splicing, but the joint is prone to cracks after construction due to external force or environmental factors, which not only affects the surface flatness, but also easily leads to the entry of rainwater, thereby damaging and corroding the internal materials and affecting the safety performance of building materials and structural members. UTILITY MODEL CONTENT

[0003] Therefore, the utility model aims to provide an anti-cracking structure applied to the joint of cement fiber board of outer wall to solve the problems in the prior art.

[0004] To achieve the above-mentioned purpose, the utility model is implemented by the following technical solutions:

[0005] An anti-cracking structure applied to the joint of cement fiber board of outer wall is provided, which includes, from inside to outside, a base structure wall, a horizontal hot-dip galvanized steel pipe, adhesive, cement fiber board, waterproof putty and a real stone paint surface layer, and the joint node of the cement fiber board is filled with neutral silicone weather-resistant sealant and outer wall sealing putty from inside to outside.

[0006] As described above, the anti-cracking structure applied to the joint of cement fiber board of outer wall, wherein a fiberglass mesh cloth is arranged between the waterproof putty and the cement fiber board, and the fiberglass mesh cloth is arranged in the middle.

[0007] As described above, the anti-cracking structure applied to the joint of cement fiber board of outer wall, wherein the horizontal hot-dip galvanized steel pipes are arranged on both sides of the joint node of the cement fiber board, and the horizontal hot-dip galvanized steel pipes are arranged without gaps.

[0008] As described above, the anti-cracking structure applied to the joint of cement fiber board of outer wall, wherein vertical hot-dip galvanized steel pipes are welded to the vertical sides of the horizontal hot-dip galvanized steel pipes, and the vertical hot-dip galvanized steel pipes are welded to the wall embedded parts.

[0009] As described above, the anti-cracking structure applied to the joint of cement fiber board of outer wall, wherein the cement fiber board and the horizontal hot-dip galvanized steel pipes are fixed by stainless steel countersunk head screws.

[0010] The utility model technical scheme has the following beneficial effects:

[0011] The utility model discloses can guarantee the evenness of surface, play the role of preventing the crack of board joint, can effectively prevent the formation of crack, guarantee the evenness of building outer wall facade and the integrity of outer wall facade, prevent the crack of outer wall cement fiber board joint from leading to water into the inside, can be used in batch construction, be applicable to various outer wall cement fiber board joints. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to further illustrate the above purpose, structural characteristics and effects of the utility model, the utility model will be described in detail below with reference to the drawings.

[0013] Figure 1 It is the structure schematic diagram of preferable embodiment of the utility model;

[0014] Figure 2 It is the partial enlarged view of dotted frame in Figure 1

[0015] In the drawing: 1, base structure wall; 2, transverse hot-dip galvanized steel pipe; 3, paste glue; 4, cement fiber board; 5, waterproof putty; 6, real stone paint surface layer; 7, neutral silicone weatherproof sealant; 8, joint sealing putty; 9, glass fiber mesh cloth; 10, vertical hot-dip galvanized steel pipe; 11, stainless steel countersunk screw. DETAILED DESCRIPTION

[0016] The terms "utility model" and "the utility model" used in this specification, and "the utility model" are intended to refer broadly to all subject matter of this specification and of any patent claims below. The inclusion of these terms is not to be construed as limiting the subject matter described herein or limiting the meaning or scope of any patent claims below. Furthermore, this specification is not intended to describe or limit the subject matter covered by any claims in any particular exact manner. The subject matter should be understood by reference to the entire specification, all figures and any claims below. The utility model can have other embodiments and be practiced or implemented in other ways. Moreover, it should be understood that the language and terminology used herein are for the purpose of description and should not be regarded as limiting.

[0017] The details of the utility model will now be discussed with reference to the accompanying drawings, which illustrate the utility model by way of example only. In the drawings, like features or components can be denoted by the same reference numerals.

[0018] The use of "comprise", "have" and "include" and variations thereof herein is meant to be inclusive, in the sense of "comprising", "having" or "including" the items listed thereafter and equivalents thereof and additional items. Although reference can be made in the description of the drawings to directions such as above, below, upward, downward, rearward, front, back, forward, top, bottom, under, under, upper, lower, front, rear, etc., these directions are with reference to the figures as convenient for description only. These directions are not intended to be literal or limiting of the scope of the utility model in any way.

[0019] Referring to​Figure 1 、 Figure 2 As shown in the drawings, in the preferred embodiment, the anti-cracking structure of the outer wall cement fiber board joint comprises, from inside to outside, a base structure wall 1, a horizontal hot-dip galvanized steel pipe 2, a bonding glue 3, a cement fiber board 4, a waterproof putty 5, and a real stone paint surface layer 6. The joint node in the cement fiber board 4 is filled, from inside to outside, with a neutral silicone weatherproof sealant 7 and an outer wall sealing putty 8. The neutral silicone weatherproof sealant 7 has good sealing and waterproof performance, and the outer wall sealing putty 8 can better fill and level the groove at the joint.

[0020] Further, a fiberglass mesh cloth 9 is arranged between the waterproof putty 5 and the cement fiber board 4. The fiberglass mesh cloth 9 is arranged in the middle, which better increases the strength of the surface layer against cracking.

[0021] In terms of specific structure, the horizontal hot-dip galvanized steel pipe 2 is arranged on both sides of the joint node of the cement fiber board 4, and the horizontal hot-dip galvanized steel pipes 2 are arranged without gaps. The size specification is 80x80x5mm.

[0022] Further, vertical hot-dip galvanized steel pipes 10 are welded to the vertical sides of the horizontal hot-dip galvanized steel pipe 2, and the vertical hot-dip galvanized steel pipes 10 are welded to the wall embedded parts.

[0023] Continuing to refer to the drawings, the cement fiber board 4 is connected and fixed to the horizontal hot-dip galvanized steel pipe 2 by means of a stainless steel countersunk screw 11 with a size of st5.5x35mm. The joint width of the cement fiber board 4 is 10mm. The neutral silicone weatherproof sealant 7 filled in the joint has a thickness of 6mm, and the outer wall sealing putty 9 filled on the outside has a thickness of 6mm. A 150mm wide fiberglass mesh cloth 9 is arranged on the outside of the joint, arranged in the middle. The waterproof putty 5 is arranged on the outside of the board and the fiberglass mesh cloth 9 to prevent the board from being deformed due to rainwater invasion. The real stone paint surface layer 6 is sprayed on the outside of the waterproof putty 5, so that the cement fiber board 4 forms a complete outer wall surface.

[0024] In this way, the base structure wall 1, the horizontal hot-dip galvanized steel pipe 2, the bonding glue 3, the cement fiber board 4, the fiberglass mesh cloth 9, the waterproof putty 5, the real stone paint surface layer 6, and the neutral silicone weatherproof sealant 7 and the outer wall sealing putty 8 in the joint node of the cement fiber board 4 form a complete anti-cracking structure. This not only ensures the flatness and integrity of the building outer wall surface, but also prevents water from entering the interior due to cracking of the outer wall cement fiber board joint, thereby preventing cracking at the joint of the board.

[0025] The above merely describes preferred embodiments of the present application, and is not intended to limit the implementation and protection scope of the present application. For those skilled in the art, it should be understood that any equivalent substitutions and obvious changes made according to the content of the present application and drawings should be included in the protection scope of the present application.

Claims

1. A crack prevention structure applied to a joint of an external wall cement fiberboard, characterized by, From inside to outside, the wall body includes a base structure, a transverse hot-dip galvanized steel pipe, adhesive, a cement fiber board, waterproof putty and a real stone paint surface layer, and the joint node of the cement fiber board is filled with neutral silicone weatherproof sealant and external wall sealing putty from inside to outside.

2. The anti-cracking structure for the joint of the cement fiber board for the exterior wall according to claim 1, wherein Glass fiber mesh cloth is arranged between the waterproof putty and the cement fiber board.

3. The anti-cracking structure for the joint of the cement fiber board for the exterior wall according to claim 1, wherein The transverse hot-dip galvanized steel pipes are arranged on both sides of the joint node of the cement fiber board.

4. The anti-cracking structure for the joint of the cement fiberboard for the exterior wall according to claim 3, wherein Vertical hot-dip galvanized steel pipes are welded on both vertical sides of the transverse hot-dip galvanized steel pipes, and the vertical hot-dip galvanized steel pipes are welded with wall body embedded parts.

5. The anti-cracking structure for the joint of the cement fiberboard for the exterior wall according to claim 1, wherein The cement fiber board and the transverse hot-dip galvanized steel pipe are fixed by stainless steel countersunk head screws.