Building outer wall waterproof and anti-crack heat preservation structure and construction process

Abstract

The application belongs to the technical field of external wall anti-cracking thermal insulation structure, and discloses a building external wall waterproof anti-cracking thermal insulation structure and a construction process. The building external wall waterproof anti-cracking thermal insulation structure comprises, from the side of a building wall body towards the side away from the building wall body, a rock wool thermal insulation layer, a mortar layer, a leveling layer and a finishing layer. The mortar layer is provided with a multifunctional mesh cloth. The multifunctional mesh cloth is woven by anti-cracking composite fibers. The anti-cracking composite fibers comprise glass fibers and polyvinyl alcohol fibers twisted with each other. The multifunctional mesh cloth has good toughness, anti-shrinkage, anti-cracking, thermal insulation, antibacterial and other comprehensive properties, improves the comprehensive performance of the external wall structure, and prolongs the service life of the external wall structure.

Description

Technical Field

[0001] This invention relates to the field of exterior wall crack-resistant and thermal insulation structure technology, and in particular to a waterproof and crack-resistant thermal insulation structure for building exterior walls and its construction process. Background Technology

[0002] Building exterior walls are the outer wall structure of a house during construction. Modern exterior walls are not only waterproof but also have thermal insulation functions. Thermal insulation methods are divided into internal insulation and external insulation. Generally, better materials are used to coat the walls during construction to meet the current building requirements.

[0003] In existing general technologies, waterproof and thermal insulation mortar is usually applied to the surface of building exterior walls. To enhance the stability of the mortar during use, a mesh fabric is usually applied to the exterior wall. Existing mesh fabrics are usually made of glass fiber, which has certain reinforcing properties, but its own structural strength is low. The mortar attached to the lower mesh fabric is easily affected by the gravity of the mortar on the upper mesh fabric, which reduces the performance and service life of the mesh fabric. Therefore, it is necessary to make corresponding improvements to the relevant technologies. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a waterproof, crack-resistant, and thermally insulated exterior wall structure and its construction process.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a waterproof, crack-resistant and heat-insulating structure for building exterior walls, comprising a rock wool insulation layer, a mortar layer, a leveling layer and a finishing layer arranged sequentially from the building wall toward the side away from the building wall, wherein a multifunctional mesh cloth is provided in the mortar layer, the multifunctional mesh cloth is woven from crack-resistant composite fibers, and the crack-resistant composite fibers include glass fibers and polyvinyl alcohol fibers twisted together.

[0006] By adopting the above technical solutions, the multifunctional mesh fabric woven from glass fiber plays a role in stress dispersion in the external insulation system. Together with the plastering mortar, it forms the protective surface layer of the external insulation system, resisting surface cracking caused by changes in natural temperature and humidity and accidental impacts. Polyvinyl alcohol fiber can significantly improve the toughness of mortar. Crack-resistant composite fibers are made by twisting polyvinyl alcohol fiber and glass fiber together, and then woven into multifunctional mesh fabric. This gives the multifunctional mesh fabric good crack resistance and toughness, which helps to improve the structural strength of the multifunctional mesh fabric and reduce the probability of damage to the multifunctional mesh fabric due to the large load-bearing pressure of the lower multifunctional mesh fabric.

[0007] Furthermore, the crack-resistant composite fiber also includes modified aramid fiber and kapok fiber.

[0008] Furthermore, the modified aramid fiber is prepared as follows: ordinary aramid fiber is treated with a mixed gas consisting of 5% fluorine and 95% ammonia at a pressure of 55-60 kPa and a temperature of 20-25°C for 1.5-2 hours.

[0009] By adopting the above technical solutions, the surface of chemically modified aramid fibers is coarser, which can effectively improve the bonding strength between the multifunctional mesh fabric and cement mortar when used in textiles. Kapok fibers have advantages such as light weight, warmth, mildew resistance, and antibacterial properties. Together with polyvinyl alcohol fibers, modified aramid fibers, and glass fibers, they are used to prepare crack-resistant composite fibers and then used to prepare multifunctional mesh fabrics. This results in multifunctional mesh fabrics with good comprehensive properties such as toughness, shrinkage resistance, crack resistance, heat insulation, and antibacterial properties, which improves the overall performance of the exterior wall structure and extends its service life.

[0010] Furthermore, the mortar layer comprises the following raw materials in parts by weight: 80-100 parts of cementitious material, 10-16 parts of expanding agent, 5-9 parts of waterproofing agent, 20-30 parts of polystyrene particles, 20-30 parts of polyurethane, 4-8 parts of polyethylene, 6-12 parts of phase change paraffin wax, 0.4-0.8 parts of graphite, and 35-40 parts of water.

[0011] Furthermore, the expanding agent is a thioaluminate.

[0012] Furthermore, the waterproofing agent is water glass.

[0013] By adopting the above technical solutions, the thermal conductivity of polystyrene particles is slightly higher, which can alleviate the accumulation of heat in the crack-resistant layer and allow the heat load and stress generated by the sudden temperature change of the system to be released more quickly, thereby improving crack resistance. Polyurethane has the properties of being lightweight, having low thermal conductivity, good heat resistance, aging resistance, easy bonding with other materials, and not producing molten droplets when burning. By mixing polyethylene, phase change paraffin wax and graphite, polyethylene forms a network structure, which realizes multi-layer spatial encapsulation of paraffin wax, resulting in a composite shaped phase change material with good structure and a latent heat of phase change greater than that of the phase change. It can form a seamless interface bond with hardened cement mortar, which is beneficial to improving the mechanical properties, toughness and crack resistance of the mortar.

[0014] Furthermore, the method for preparing the mortar for the mortar layer is as follows:

[0015] S1. Weigh polyethylene, phase change paraffin wax and graphite powder according to the proportion. Weigh polyethylene, phase change paraffin wax and graphite powder in a mass ratio of 4:6:0.4. Then stir in a constant temperature oil bath at 150-170℃ at a speed of 300-360r / min for 30-40min. Afterwards, let the mixture cool naturally, crush and sieve for later use.

[0016] S2. Weigh the remaining raw materials according to the proportion and mix them evenly with the powder in step S1 to obtain the final product.

[0017] This application also discloses a construction process for a waterproof, crack-resistant, and thermally insulated exterior wall structure, including the following steps:

[0018] (1) Rock wool insulation layer and multi-functional mesh cloth are installed sequentially on the surface of the building wall, and expansion screws are used to fix the rock wool insulation layer and multi-functional mesh cloth to the building wall.

[0019] (2) Apply cement mortar evenly to the multifunctional mesh cloth, and after curing, form a mortar layer. Then apply a leveling layer to the surface of the mortar layer away from the building wall. Finally, apply waterproof latex paint of the required color to the surface of the leveling layer away from the building wall to form a decorative layer.

[0020] By adopting the above technical solutions, the multifunctional mesh fabric has good tensile strength and toughness, and the mortar layer has good toughness, shrinkage resistance, crack resistance, heat insulation, antibacterial and other comprehensive properties, which improves the comprehensive performance of the building exterior wall waterproof crack-resistant insulation structure and helps to extend the service life of the building exterior wall waterproof crack-resistant insulation structure.

[0021] In summary, the present invention has the following beneficial effects:

[0022] 1. In this application, the multifunctional mesh fabric woven from glass fiber plays a role in stress dispersion in the external insulation system. Together with the plastering mortar, it forms the protective surface layer of the external insulation system, resisting surface cracking caused by changes in temperature and humidity and accidental impacts. Polyvinyl alcohol fiber can significantly improve the toughness of mortar. The crack-resistant composite fiber is made by twisting polyvinyl alcohol fiber and glass fiber together, and then woven into a multifunctional mesh fabric. This gives the multifunctional mesh fabric good crack resistance and toughness, which helps to improve the structural strength of the multifunctional mesh fabric and reduce the probability of damage to the multifunctional mesh fabric due to the large bearing pressure of the lower multifunctional mesh fabric.

[0023] 2. In this application, kapok fiber has the advantages of being lightweight, warm, mildew-proof, and antibacterial. It is used together with polyvinyl alcohol fiber, modified aramid fiber, and glass fiber to prepare crack-resistant composite fiber and to prepare multifunctional mesh fabric. This makes the mesh fabric have good comprehensive properties such as toughness, shrinkage resistance, crack resistance, heat insulation, and antibacterial properties, which improves the comprehensive performance of the exterior wall structure and extends the service life of the exterior wall structure.

[0024] 3. In this application, the polystyrene particles have a slightly higher thermal conductivity, which can alleviate the accumulation of heat in the crack-resistant layer and allow the system to release the heat load and stress caused by sudden temperature changes more quickly, thereby improving crack resistance. Polyurethane has properties such as light weight, low thermal conductivity, good heat resistance, aging resistance, easy bonding with other materials, and no dripping during combustion. By blending polyethylene, phase change paraffin wax, and graphite, polyethylene forms a network structure, achieving multi-layered spatial encapsulation of paraffin wax. This results in a composite shaped phase change material with a good structure and a latent heat of phase change greater than 1, which can form a seamless interface with hardened cement mortar, thus improving the mechanical properties, toughness, and crack resistance of the mortar. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the structure of the multifunctional mesh fabric in an embodiment of the present invention;

[0027] Figure 3 This is a schematic diagram of the structure of the crack-resistant composite fiber in an embodiment of the present invention.

[0028] In the diagram: 1. Building wall; 11. Rock wool insulation layer; 12. Mortar layer; 13. Leveling layer; 14. Finishing layer; 2. Multifunctional mesh fabric; 21. Crack-resistant composite fiber; 211. Glass fiber; 212. Polyvinyl alcohol fiber; 213. Modified aramid fiber; 214. Kapok fiber. Detailed Implementation

[0029] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0030] Example 1

[0031] like Figure 1-3 As shown in the embodiment of this application, a waterproof, crack-resistant, and heat-insulating structure for building exterior walls is disclosed, comprising a rock wool insulation layer, a mortar layer, a leveling layer, and a finishing layer arranged sequentially from the building wall toward the side away from the building wall. A multifunctional mesh cloth is provided in the mortar layer. The multifunctional mesh cloth is woven from crack-resistant composite fibers, including glass fibers, polyvinyl alcohol fibers, modified aramid fibers, and kapok fibers twisted together.

[0032] Specifically, the preparation method of modified aramid fiber is as follows: Ordinary aramid fiber is treated with a mixed gas of 5% fluorine and 95% ammonia at a pressure of 55 kPa and a temperature of 20°C for 1.5 h. The composition of the mortar layer includes the following raw materials in parts by weight: 80 parts cementitious material, 10 parts sulfoaluminate, 5 parts water glass, 20 parts polystyrene particles, 20 parts polyurethane, 4 parts polyethylene, 6 parts phase change paraffin, 0.4 parts graphite, and 35 parts water.

[0033] The method for preparing mortar for the mortar layer is as follows:

[0034] S1. Weigh polyethylene, phase change paraffin and graphite powder according to the proportion. Weigh polyethylene, phase change paraffin and graphite powder in a mass ratio of 4:6:0.4. Then stir in a constant temperature oil bath at 150℃ at a speed of 300r / min for 30min. Afterwards, let the mixture cool naturally, crush and sieve for later use.

[0035] S2. Weigh the remaining raw materials according to the proportion and mix them evenly with the powder in step S1 to obtain the final product.

[0036] This embodiment also discloses a construction process for a waterproof, crack-resistant, and thermally insulated exterior wall structure, including the following steps:

[0037] (1) Rock wool insulation layer and multi-functional mesh cloth are installed sequentially on the surface of the building wall, and expansion screws are used to fix the rock wool insulation layer and multi-functional mesh cloth to the building wall.

[0038] (2) Apply cement mortar evenly to the multifunctional mesh cloth, and after curing, form a mortar layer. Then apply a leveling layer to the surface of the mortar layer away from the building wall. Finally, apply waterproof latex paint of the required color to the surface of the leveling layer away from the building wall to form a decorative layer.

[0039] Multifunctional mesh fabric woven from glass fiber plays a role in stress dispersion in external insulation systems. Together with the plastering mortar, it forms the protective surface layer of the external insulation system, resisting surface cracking caused by changes in natural temperature and humidity and accidental impacts. Polyvinyl alcohol fiber significantly improves the toughness of mortar. Crack-resistant composite fibers are made by twisting polyvinyl alcohol fibers and glass fibers together, and then woven into multifunctional mesh fabric. This gives the multifunctional mesh fabric excellent crack resistance and toughness, which helps improve its structural strength and reduces the probability of damage to the multifunctional mesh fabric due to the high load-bearing capacity of the underlying multifunctional mesh fabric. Chemically modified aramid fibers have a rougher surface and are used in the weaving of multifunctional mesh fabric, effectively improving the bonding strength between the multifunctional mesh fabric and cement mortar. Kapok fiber has advantages such as being lightweight, warm, mildew-proof, and antibacterial. It is used together with polyvinyl alcohol fiber, modified aramid fiber, and glass fiber to prepare crack-resistant composite fibers and multifunctional mesh fabrics. This results in multifunctional mesh fabrics with good comprehensive properties such as toughness, shrinkage resistance, crack resistance, heat insulation, and antibacterial properties, which improves the overall performance of exterior wall structures and extends their service life.

[0040] Polystyrene particles have a slightly higher thermal conductivity, which can alleviate the accumulation of heat in the crack-resistant layer and allow the system to release the heat load and stress caused by sudden temperature changes more quickly, thus improving crack resistance. Polyurethane has properties such as light weight, low thermal conductivity, good heat resistance, aging resistance, easy bonding with other materials, and no dripping during combustion. By blending polyethylene, phase change paraffin wax, and graphite, polyethylene forms a network structure, achieving multi-layered spatial encapsulation of paraffin wax. This results in a composite shaped phase change material with a good structure and a latent heat of phase change greater than 100%. It can form a seamless interface with hardened cement mortar, which is beneficial to improving the mechanical properties, toughness, and crack resistance of the mortar.

[0041] Example 2

[0042] like Figure 1-3 As shown in the embodiment of this application, a waterproof, crack-resistant, and heat-insulating structure for building exterior walls is disclosed, comprising a rock wool insulation layer, a mortar layer, a leveling layer, and a finishing layer arranged sequentially from the building wall toward the side away from the building wall. A multifunctional mesh cloth is provided in the mortar layer. The multifunctional mesh cloth is woven from crack-resistant composite fibers, including glass fibers, polyvinyl alcohol fibers, modified aramid fibers, and kapok fibers twisted together.

[0043] Specifically, the preparation method of modified aramid fiber is as follows: Ordinary aramid fiber is treated with a mixed gas of 5% fluorine and 95% ammonia at a pressure of 60 kPa and a temperature of 25°C for 2 hours. The composition of the mortar layer includes the following raw materials in parts by weight: 100 parts cementitious material, 16 parts sulfoaluminate, 9 parts water glass, 30 parts polystyrene particles, 30 parts polyurethane, 8 parts polyethylene, 12 parts phase change paraffin, 0.8 parts graphite, and 40 parts water.

[0044] The method for preparing mortar for the mortar layer is as follows:

[0045] S1. Weigh polyethylene, phase change paraffin and graphite powder according to the proportion. Weigh polyethylene, phase change paraffin and graphite powder in a mass ratio of 4:6:0.4. Then stir in a constant temperature oil bath at 170℃ at a speed of 360r / min for 40min. Afterwards, let the mixture cool naturally, crush and sieve for later use.

[0046] S2. Weigh the remaining raw materials according to the proportion and mix them evenly with the powder in step S1 to obtain the final product.

[0047] This embodiment also discloses a construction process for a waterproof, crack-resistant, and thermally insulated exterior wall structure, including the following steps:

[0048] (1) Rock wool insulation layer and multi-functional mesh cloth are installed sequentially on the surface of the building wall, and expansion screws are used to fix the rock wool insulation layer and multi-functional mesh cloth to the building wall.

[0049] (2) Apply cement mortar evenly to the multifunctional mesh cloth, and after curing, form a mortar layer. Then apply a leveling layer to the surface of the mortar layer away from the building wall. Finally, apply waterproof latex paint of the required color to the surface of the leveling layer away from the building wall to form a decorative layer.

[0050] Example 3

[0051] like Figure 1-3 As shown in the embodiment of this application, a waterproof, crack-resistant, and heat-insulating structure for building exterior walls is disclosed, comprising a rock wool insulation layer, a mortar layer, a leveling layer, and a finishing layer arranged sequentially from the building wall toward the side away from the building wall. A multifunctional mesh cloth is provided in the mortar layer. The multifunctional mesh cloth is woven from crack-resistant composite fibers, including glass fibers, polyvinyl alcohol fibers, modified aramid fibers, and kapok fibers twisted together.

[0052] Specifically, the preparation method of modified aramid fiber is as follows: Ordinary aramid fiber is treated with a mixed gas of 5% fluorine and 95% ammonia at a pressure of 58 kPa and a temperature of 23°C for 2 hours. The composition of the mortar layer includes the following raw materials in parts by weight: 90 parts cementitious material, 13 parts sulfoaluminate, 7 parts water glass, 25 parts polystyrene particles, 25 parts polyurethane, 6 parts polyethylene, 9 parts phase change paraffin, 0.6 parts graphite, and 37 parts water.

[0053] The method for preparing mortar for the mortar layer is as follows:

[0054] S1. Weigh polyethylene, phase change paraffin and graphite powder according to the proportion. Weigh polyethylene, phase change paraffin and graphite powder in a mass ratio of 4:6:0.4. Then stir in a constant temperature oil bath at 160℃ at a speed of 330r / min for 35min. Afterwards, let the mixture cool naturally, crush and sieve for later use.

[0055] S2. Weigh the remaining raw materials according to the proportion and mix them evenly with the powder in step S1 to obtain the final product.

[0056] This embodiment also discloses a construction process for a waterproof, crack-resistant, and thermally insulated exterior wall structure, including the following steps:

[0057] (1) Rock wool insulation layer and multi-functional mesh cloth are installed sequentially on the surface of the building wall, and expansion screws are used to fix the rock wool insulation layer and multi-functional mesh cloth to the building wall.

[0058] (2) Apply cement mortar evenly to the multifunctional mesh cloth, and after curing, form a mortar layer. Then apply a leveling layer to the surface of the mortar layer away from the building wall. Finally, apply waterproof latex paint of the required color to the surface of the leveling layer away from the building wall to form a decorative layer.

[0059] Comparative Example 1

[0060] A waterproof, crack-resistant, and thermally insulating structure for building exterior walls, the only difference between this structure and Example 3 is that polyvinyl alcohol fiber is not added to the crack-resistant composite fiber.

[0061] Comparative Example 2

[0062] A waterproof, crack-resistant, and thermally insulating structure for building exterior walls, the only difference between this structure and Example 3 is that no kapok fiber is added to the crack-resistant composite fiber.

[0063] Comparative Example 3

[0064] A waterproof, crack-resistant, and thermally insulating structure for building exterior walls, the only difference between this structure and Example 3 is that no modified aramid fiber is added to the crack-resistant composite fiber.

[0065] Comparative Example 4

[0066] A waterproof, crack-resistant, and thermally insulating structure for building exterior walls, the only difference between this structure and Example 3 is that the crack-resistant composite fiber contains unmodified aramid fiber.

[0067] Comparative Example 5

[0068] A waterproof, crack-resistant, and thermally insulating structure for building exterior walls, the only difference between this structure and Example 3 is that polystyrene particles are not added to the composition of the mortar layer.

[0069] Comparative Example 6

[0070] A waterproof, crack-resistant, and thermally insulating structure for building exterior walls, the only difference between this structure and Example 3 is that polyurethane is not added to the composition of the mortar layer.

[0071] Comparative Example 7

[0072] A waterproof, crack-resistant, and thermally insulating structure for building exterior walls, the only difference between this structure and Example 3 is that polyethylene is not added to the composition of the mortar layer.

[0073] Comparative Example 8

[0074] A waterproof, crack-resistant, and thermally insulating structure for building exterior walls, the only difference between this structure and Example 3 is that phase change paraffin is not added to the composition of the mortar layer.

[0075] Comparative Example 9

[0076] A waterproof, crack-resistant, and thermally insulating structure for building exterior walls, the only difference between this structure and Example 3 is that graphite is not added to the composition of the mortar layer.

[0077] Table 1 Performance parameters of mortar layers obtained in Examples 1-3 and Comparative Examples 1-9

[0078]

[0079]

[0080] As shown in Table 1:

[0081] The absence of polyvinyl alcohol fiber and kapok fiber has a slight impact on the tensile strength, shrinkage rate, and bond strength of the mortar layer. The absence of modified aramid fiber or the addition of unmodified aramid fiber has a significant impact on the tensile strength, shrinkage rate, and bond strength of the mortar layer.

[0082] The absence of polystyrene particles and polyurethane will have a slight impact on the tensile strength, shrinkage, and bond strength of the mortar layer. The absence of polyethylene, phase change paraffin, and graphite will have a significant impact on the tensile strength, shrinkage, and bond strength of the mortar layer.

[0083] In summary: Polystyrene particles have a slightly higher thermal conductivity, which can alleviate the accumulation of heat in the crack-resistant layer, allowing the system to release the heat load and stress caused by sudden temperature changes more quickly, thus improving crack resistance; Polyurethane has properties such as light weight, low thermal conductivity, good heat resistance, aging resistance, easy bonding with other materials, and no dripping during combustion; By blending polyethylene, phase change paraffin wax, and graphite, polyethylene forms a network structure, achieving multi-layered spatial encapsulation of paraffin wax, resulting in a composite shaped phase change material with a good structure and a latent heat of phase change greater than 1. This material can form a seamless interface with hardened cement mortar, which is beneficial for improving the mechanical properties, toughness, and crack resistance of the mortar.

[0084] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A waterproof, crack-resistant, and thermally insulated exterior wall structure, characterized by: The structure includes a rock wool insulation layer, a mortar layer, a leveling layer, and a finishing layer arranged sequentially from the building wall toward the side away from the building wall. The mortar layer contains a multi-functional mesh fabric, which is woven from crack-resistant composite fibers, including glass fibers and polyvinyl alcohol fibers twisted together. The crack-resistant composite fiber also includes modified aramid fiber and kapok fiber; The modified aramid fiber is prepared as follows: ordinary aramid fiber is treated with a mixed gas consisting of 5% fluorine and 95% ammonia at a pressure of 55-60 kPa and a temperature of 20-25°C for 1.5-2 hours.

2. The waterproof, crack-resistant, and thermally insulated exterior wall structure according to claim 1, characterized in that, The mortar layer consists of the following raw materials in parts by weight: 80-100 parts cementitious material, 10-16 parts expanding agent, 5-9 parts waterproofing agent, 20-30 parts polystyrene particles, 20-30 parts polyurethane, 4-8 parts polyethylene, 6-12 parts phase change paraffin wax, 0.4-0.8 parts graphite, and 35-40 parts water.

3. The waterproof, crack-resistant, and thermally insulated exterior wall structure according to claim 2, characterized in that: The expanding agent is thioaluminate.

4. A waterproof, crack-resistant, and thermally insulated exterior wall structure according to claim 2, characterized in that: The waterproofing agent is water glass.

5. A waterproof, crack-resistant, and thermally insulated exterior wall structure according to claim 2, characterized in that, The method for preparing mortar for the mortar layer is as follows: S1. Weigh polyethylene, phase change paraffin wax and graphite powder according to the proportion. Weigh polyethylene, phase change paraffin wax and graphite powder in a mass ratio of 4:6:0.

4. Then stir in a constant temperature oil bath at 150-170℃ at a speed of 300-360r / min for 30-40min. Afterwards, let the mixture cool naturally, crush and sieve for later use. S2. Weigh the remaining raw materials according to the proportion and mix them evenly with the powder in step S1 to obtain the final product.

6. The construction process of a waterproof, crack-resistant, and thermally insulated exterior wall structure according to claim 5, characterized in that, Includes the following steps: (1) Rock wool insulation layer and multi-functional mesh cloth are installed on the surface of the building wall in sequence, and expansion screws are used to fix the rock wool insulation layer and multi-functional mesh cloth to the building wall; (2) Cement mortar is evenly applied on the multi-functional mesh cloth, and after curing, a mortar layer is formed. Then, a leveling layer is applied on the surface of the mortar layer away from the building wall. Finally, waterproof latex paint of the required color is applied on the surface of the leveling layer away from the building wall to form a decorative layer.

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