Construction method for thermal insulation and decoration of external wall of old-changed building

Abstract

The invention relates to a construction method for thermal insulation and decoration of an external wall of an old-changed building, which is used for constructing a thermal insulation and decoration structure on the surface of a wall body of the old-changed building and comprises the following steps: S1, leveling the wall body; s2, mounting a fixing component; s3, high-ductility concrete is brushed; s4, heat preservation plate installation; s5, brushing coating mortar; s6, anti-crack mortar is brushed; s7, spraying a decorative surface layer; the fixing component connected with the wall body and used for installing the heat preservation plate is secondarily fixed after being coated with the high-ductility concrete, the stability of the fixing component on the wall body can be guaranteed, and therefore it is guaranteed that the installing position of the later-installed heat preservation plate is accurate, the problem that the heat preservation plate is not spliced unevenly is not prone to occurring, and meanwhile after the heat preservation plate is installed, the heat preservation plate is not prone to falling off. The overall structural strength is improved through brushing of the plastering mortar and the anti-crack mortar, the flatness of the finally formed heat preservation decoration face is further guaranteed, and the problem that the heat preservation decoration face is not flat due to the fact that the heat preservation plates are not assembled smoothly is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and particularly refers to a construction method for thermal insulation and decoration of the exterior wall of renovated buildings. Background Art

[0002] The renovation of the exterior wall is an important part of the construction work of renovated buildings. At the present stage, with the development needs of urban renewal, high-ductility concrete is usually used to reinforce the wall of the exterior wall, and at the same time, thermal insulation boards such as rock wool, XPS and EPS are installed to improve the thermal performance, and finally a thermal insulation and decoration structure is formed on the surface of the exterior wall.

[0003] In the existing thermal insulation board fixing in the exterior wall renovation, the thermal insulation board is usually directly fixed with anchor bolts after the wall is reinforced with high-ductility concrete. When using anchor bolts to fix the thermal insulation board, the anchor bolts are prone to the problem of shaking relative to the wall, which will cause the thermal insulation boards to be unevenly spliced and cannot be adjusted locally, and finally lead to the unevenness of the thermal insulation and decoration surface. Summary of the Invention

[0004] The purpose of the present invention is to overcome the defects of the prior art and provide a construction method for thermal insulation and decoration of the exterior wall of renovated buildings, so as to solve the problem that the thermal insulation and decoration surface is prone to unevenness caused by directly fixing the thermal insulation board with anchor bolts in the prior art.

[0005] To achieve the above purpose, the present invention provides a construction method for thermal insulation and decoration of the exterior wall of renovated buildings, which is used for constructing a thermal insulation and decoration structure on the surface of the wall of a renovated building. The construction method includes the following steps:

[0006] S1. Leveling treatment of the wall;

[0007] S2. Installing fixing components;

[0008] S3. Brushing high-ductility concrete;

[0009] S4. Installing thermal insulation boards;

[0010] S5. Brushing plastering mortar;

[0011] S6. Brushing crack-resistant mortar;

[0012] S7. Spraying decorative surface layer.

[0013] By adopting this technical solution, the fixing components for installing the thermal insulation board connected to the wall are secondarily fixed after brushing high-ductility concrete, which can ensure the stability of the fixing components on the wall, thereby ensuring the accurate installation position of the post-installed thermal insulation board and not being prone to the problem of uneven assembly of the thermal insulation board. At the same time, after the thermal insulation board is installed, the brushing of the plastering mortar and the crack-resistant mortar not only increases the overall structural strength, but also further ensures the flatness of the finally formed thermal insulation and decoration surface, and will not appear the problem of unevenness of the thermal insulation and decoration surface caused by uneven assembly of the thermal insulation board.

[0014] Further, step S1 includes treating protrusions on the wall surface and filling defects with cement.

[0015] By adopting this technical solution, the wall surface is ensured to be flat, providing a prerequisite for judging whether the high-ductility concrete is flat through the fixing members.

[0016] Further, step S2 includes arranging fixing members in a matrix pattern on the wall surface according to the specification dimensions of the insulation board to be installed, and installing the fixing members on the wall surface using expansion bolts.

[0017] By adopting this technical solution, the fixing members arranged in a matrix pattern are preliminarily fixed to the wall through expansion bolts, providing a prerequisite for the subsequent embedded installation of the insulation board.

[0018] Further, the fixing member includes a member base fixed to the wall surface through an expansion bolt and a cross arm vertically fixed to the member base;

[0019] Scale marking lines are etched on the cross arm along the direction away from the member base.

[0020] By adopting this technical solution, after the member base in the fixing member is fixed to the wall through an expansion bolt, an embedding space that matches the insulation board can be formed between the cross arms of any four fixing members distributed in a rectangle, providing a prerequisite for changing the connection method of the insulation board and accelerating the installation speed of the insulation board.

[0021] Further, step S3 includes brushing high-ductility concrete on the wall surface to cover the wall surface and the member base in the fixing member, and determining the verticality and flatness of the brushing through the scale marking lines on the cross arms of each fixing member until the high-ductility concrete solidifies.

[0022] By adopting this technical solution, brushing the high-ductility concrete has the effect of secondarily fixing the fixing members. At the same time, it can be judged whether the high-ductility concrete is flat by observing whether the positions of the scale marking lines on the cross arms of each fixing member corresponding to the high-ductility concrete are the same, and problems such as unevenness or collapse of the high-ductility concrete can be detected in time, facilitating timely adjustment.

[0023] Further, step S4 includes brushing an adhesive on the back of the insulation board to be installed, and then embedding the insulation board between the four cross arms distributed in a rectangle, and pasting its back on the surface of the high-ductility concrete through the adhesive.

[0024] By adopting this technical solution, the installation method of the insulation board is adjusted to a bonding and embedding combination method, which can not only ensure the installation flatness of the insulation board, but also reduce the installation difficulty of the insulation board, increase the installation efficiency of the insulation board, and is not prone to the problem of uneven splicing of the insulation board under the condition of ensuring the accurate installation position of the fixing member.

[0025] Further, step S5 includes covering the surface of the insulation board with a mesh cloth, and then brushing a plastering mortar with a uniform thickness until the plastering mortar solidifies.

[0026] By adopting this technical solution, covering the mesh cloth and brushing the plastering mortar can play a role in sealing and protecting the splicing joints of the insulation board, and reduce the influence of the splicing joints on the finally constructed thermal insulation and decorative surface.

[0027] Further, step S6 includes covering the surface of the plastering mortar with a mesh cloth, and then brushing a crack-resistant mortar with a uniform thickness until the crack-resistant mortar solidifies.

[0028] By adopting this technical solution, covering the mesh cloth and brushing the crack-resistant mortar can further play a role in protecting the insulation board and provide a basis for the next step of spraying decorative paint.

[0029] Further, step S7 includes spraying decorative paint on the surface of the crack-resistant mortar, spraying evenly and forming a decorative surface layer after solidification to complete the construction.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] 1. The fixing member for installing the insulation board connected to the wall is secondarily fixed after being brushed with high-ductility concrete, which can ensure the stability of the fixing member on the wall, thereby ensuring the accurate installation position of the post-installed insulation board and not being prone to the problem of uneven assembly of the insulation board. At the same time, after the insulation board is installed, the brushing of the plastering mortar and the crack-resistant mortar not only increases the overall structural strength, but also further ensures the flatness of the finally formed thermal insulation and decorative surface, and there will be no problem of uneven thermal insulation and decorative surface caused by uneven assembly of the insulation board.

[0032] 2. The bonding and embedding method is adopted for the installation of the insulation board, which will not cause deformation of the insulation board during the installation process, so as to facilitate ensuring the flat splicing of the insulation board. After being combined with the brushing of the plastering mortar and the crack-resistant mortar, the flatness of the finally formed thermal insulation and decorative surface can be ensured.

[0033] 3. In addition to being used for embedding the insulation board, the scale marking lines provided on the cross arms of the fixing member can assist in leveling the high-ductility concrete and can reflect whether there is a slump problem of the high-ductility concrete before solidification, which is convenient for timely adjustment and modification of the slump problem. Description of the Drawings

[0034] Figure 1 It is a schematic flow diagram of the construction method for the external wall thermal insulation and decoration of renovated buildings in the present invention;

[0035] Figure 2 It is a schematic diagram of step S1 of the construction method for the external wall thermal insulation and decoration of renovated buildings in the present invention;

[0036] Figure 3 It is a schematic diagram of step S2 of the construction method for the external wall thermal insulation and decoration of renovated buildings in the present invention;

[0037] Figure 4 It is a schematic diagram of step S3 of the construction method for the external wall thermal insulation and decoration of renovated buildings in the present invention;

[0038] Figure 5 It is a schematic diagram of step S4 of the construction method for the external wall thermal insulation and decoration of renovated buildings in the present invention;

[0039] Figure 6 It is a schematic diagram of step S5 of the construction method for the external wall thermal insulation and decoration of renovated buildings in the present invention;

[0040] Figure 7 It is a schematic diagram of step S6 of the construction method for the external wall thermal insulation and decoration of renovated buildings in the present invention;

[0041] Figure 8 It is a schematic diagram of the cooperation between the fixing member and the expansion bolt in the construction method for the external wall thermal insulation and decoration of renovated buildings in the present invention;

[0042] Figure 9 It is a schematic diagram showing the flatness of the high-ductility concrete reflected by the fixing member and the non-flatness of the high-ductility concrete reflected by the fixing member in the construction method for the external wall thermal insulation and decoration of renovated buildings in the present invention.

[0043] Explanation of reference numerals: 1, wall; 2, fixing member; 21, member base; 22, cross arm; 23, scale marking line; 24, expansion bolt; 3, high-ductility concrete; 4, insulation board; 5, rendering mortar; 6, anti-cracking mortar. Detailed implementation manners

[0044] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0045] Please refer to the attached Figure 1 , the present invention provides a construction method for the external wall thermal insulation and decoration of renovated buildings, which is used for the construction of the thermal insulation and decoration structure on the surface of the wall 1 of the renovated building. It is characterized in that the construction method includes the following steps: S1, leveling treatment of the wall 1; S2, installing the fixing member 2; S3, brushing the high-ductility concrete 3; S4, installing the insulation board 4; S5, brushing the rendering mortar 5; S6, brushing the anti-cracking mortar 6; S7, spraying the decorative surface layer;

[0046] The fixing member 2 for installing the thermal insulation board 4, which is connected to the wall 1, is secondarily fixed after being coated with high-ductility concrete 3, which can ensure the stability of the fixing member 2 on the wall 1, thus ensuring the accurate installation position of the later-installed thermal insulation board 4 and making it not easy to have the problem of uneven assembly of the thermal insulation board 4. At the same time, after the thermal insulation board 4 is installed, the brushing of the plastering mortar 5 and the anti-cracking mortar 6 not only increases the overall structural strength but also further ensures the flatness of the finally formed thermal insulation decorative surface, and there will be no problem of uneven thermal insulation decorative surface caused by uneven assembly of the thermal insulation board 4.

[0047] Please refer to the appendix Figure 2 , step S1 includes dealing with the protrusions on the surface of the wall 1 and filling the defective parts with cement to ensure the flatness of the surface of the wall 1, providing a prerequisite for judging whether the high-ductility concrete 3 is flat through the fixing member 2.

[0048] Please refer to the appendix Figure 3 , step S2 includes arranging the fixing members 2 in a matrix on the surface of the wall 1 according to the specification dimensions of the to-be-installed thermal insulation board 4, providing a prerequisite for the subsequent embedded installation of the thermal insulation board 4, and installing the fixing members 2 on the surface of the wall 1 using expansion bolts 24;

[0049] Furthermore, please refer to the appendix Figure 8 , the fixing member 2 includes a member base 21 fixed to the surface of the wall 1 by expansion bolts 24 and a cross arm 22 vertically fixed to the member base 21; after the member base 21 in the fixing member 2 is fixed to the wall 1 by expansion bolts 24, an embedding space for cooperating with the thermal insulation board 4 can be formed between the cross arms 22 of any four fixing members 2 distributed in a rectangle, providing a prerequisite for changing the connection method of the thermal insulation board 4 and accelerating the installation speed of the thermal insulation board 4; scale marking lines 23 are etched on the cross arm 22 along the direction away from the member base 21;

[0050] Furthermore, in order to ensure the installation stability of the fixing member 2 on the wall 1, the member base 21 in a single fixing member 2 is fixed to the wall 1 by four expansion bolts 24, and the four expansion bolts 24 are distributed at the four corners of the member base 21, and the positions of the expansion bolts 24 do not conflict with the positions of the cross arms 22.

[0051] Please refer to the appendix Figure 4 , step S3 includes brushing the high-ductility concrete 3 on the surface of the wall 1 to cover the surface of the wall 1 and the member base 21 in the fixing member 2, and determining the verticality and flatness of the brushing through the scale marking lines 23 on the cross arms 22 of each fixing member 2 until the high-ductility concrete 3 solidifies; brushing the high-ductility concrete 3 has the function of secondarily fixing the fixing member 2, and at the same time please refer to the appendix Figure 9, it is possible to determine whether the high-ductility concrete 3 is flat by observing whether the positions of the scale marking lines 23 on the cross arms 22 of each fixing member 2 corresponding to the high-ductility concrete 3 are the same, and the problems of unevenness or collapse of the high-ductility concrete 3 can be detected in time, which is convenient for timely adjustment;

[0052] Furthermore, the scale marking lines 23 can be evenly distributed scale lines or single lines corresponding to the brushing thickness position of the high-ductility concrete 3; setting them as evenly distributed scale lines can adapt to the leveling after brushing high-ductility concrete 2 with different thicknesses, and setting them as single lines can reduce the production difficulty and cost of the fixing member 2.

[0053] Please refer to Appendix 5. Step S4 includes brushing an adhesive on the back of the insulation board 4 to be installed, and then embedding the insulation board 4 between four cross arms 22 distributed in a rectangle, and making its back adhere to the surface of the high-ductility concrete 3 through the adhesive; adjusting the installation method of the insulation board 4 to a combined method of bonding and embedding can not only ensure the installation flatness of the insulation board 4, but also reduce the installation difficulty of the insulation board 4, increase the installation efficiency of the insulation board 4, and it is not easy to have the problem of uneven splicing of the insulation board 4 under the condition of ensuring the accurate installation position of the fixing member 2.

[0054] Please refer to Appendix Figure 6 , step S5 includes covering a mesh cloth on the surface of the insulation board 4, and then brushing a rendering mortar 5 with a uniform thickness until the rendering mortar 5 solidifies; covering the mesh cloth and brushing the rendering mortar 5 can play a role in sealing and protecting the splicing joints of the insulation board 4 and reducing the influence of the splicing joints on the finally constructed and formed thermal insulation decorative surface;

[0055] Furthermore, in order to improve the setting effect of this layer of mesh cloth, it is set as a composite alkali-resistant mesh cloth with high strength, good adhesion, excellent conformability and positioning.

[0056] Please refer to Appendix Figure 7 , step S6 includes covering a mesh cloth on the surface of the rendering mortar 5, and then brushing a crack-resistant mortar 6 with a uniform thickness until the crack-resistant mortar 6 solidifies; covering the mesh cloth and brushing the crack-resistant mortar 6 can further play a role in protecting the insulation board 4 and provide a basis for the next step of spraying decorative paint;

[0057] Furthermore, in order to improve the setting effect of this layer of mesh cloth, it is set as a composite alkali-resistant mesh cloth with high strength, good adhesion, excellent conformability and positioning.

[0058] Step S7 includes spraying a decorative paint on the surface of the crack-resistant mortar 6, spraying evenly and forming a decorative surface layer after solidification to complete the construction.

[0059] The present invention has been described in detail with reference to the embodiments accompanied by drawings. Those of ordinary skill in the art can make various variations of the present invention based on the above description. Therefore, certain details in the embodiments should not constitute a limitation to the present invention, and the protection scope of the present invention will be defined by the scope defined in the appended claims.

Claims

1. A construction method for thermal insulation decoration of the exterior wall of a building renovated from an old building, which is used for constructing a thermal insulation decoration structure on the wall surface of a building renovated from an old building, and is characterized in that, The construction method includes the following steps: S1. Wall leveling treatment; S2. Installing fixed components; S3. Brushing high-ductility concrete; S4. Installing thermal insulation boards; S5. Brushing rendering mortar; S6. Brushing crack-resistant mortar; S7. Spraying decorative surface layer.

2. The external wall thermal insulation and decoration construction method for the renovation of old buildings according to claim 1, characterized in that: Step S1 includes treating the protrusions on the wall surface and filling the defective parts with cement.

3. The external wall thermal insulation and decoration construction method for the renovation of old buildings according to claim 1, characterized in that: Step S2 includes arranging the fixed components in a matrix on the wall surface according to the specification dimensions of the thermal insulation board to be installed, and installing the fixed components on the wall surface with expansion bolts.

4. The external wall thermal insulation and decoration construction method for renovated buildings according to claim 3, characterized in that: The fixed component includes a component base fixed to the wall surface by an expansion bolt and a cross arm vertically fixed to the component base; Scale marking lines are etched on the cross arm along the direction away from the component base.

5. The external wall thermal insulation and decoration construction method for renovated buildings according to claim 4, characterized in that: Step S3 includes brushing high-ductility concrete on the wall surface to cover the wall surface and the component base in the fixed component, and determining the verticality and flatness of the brushing through the scale marking lines on the cross arms of each fixed component until the high-ductility concrete solidifies.

6. The external wall thermal insulation and decoration construction method for the renovation of old buildings according to claim 1, characterized in that: Step S4 includes brushing an adhesive on the back of the thermal insulation board to be installed, and then embedding the thermal insulation board between four cross arms distributed in a rectangle, and pasting its back on the surface of the high-ductility concrete with the adhesive.

7. The external wall thermal insulation and decoration construction method for renovated buildings according to claim 1, characterized in that: Step S5 includes covering a mesh cloth on the surface of the thermal insulation board, and then brushing rendering mortar with a uniform thickness until the rendering mortar solidifies.

8. The exterior wall thermal insulation and decoration construction method for the old building renovation according to claim 1, characterized in that: Step S6 includes covering a mesh cloth on the surface of the rendering mortar, and then brushing crack-resistant mortar with a uniform thickness until the crack-resistant mortar solidifies.

9. The method for constructing thermal insulation and decoration of the exterior wall of the renovated building according to claim 1, characterized in that: Step S7 includes spraying decorative paint on the surface of the crack-resistant mortar, spraying evenly and forming a decorative surface layer after solidification to complete the construction.

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