CN108396885A - A kind of gypsum mortar composite insulation boards outer wall body and its application - Google Patents

Abstract

The invention discloses a kind of gypsum mortar composite insulation boards outer wall bodies, including screed is built in the spray of shaped steel, steel mesh, high-efficiency insulated plate, the first wall, screed, polymer waterproof anti-crack mortar and anti-corrosion screen cloth are built in the spray of the second wall.The one or both sides of the shaped steel are equipped with steel mesh and are fixed with beam column construction, it is arranged screed is built in high-efficiency insulated plate, the spray of the first wall, the inside of screed is built in the spray of the second wall, and integrated structure between mortar is built in the spray of shaped steel, steel mesh, high-efficiency insulated plate, wall；The high-efficiency insulated plate is mounted on shaped steel or steel mesh, and screed is built by the spray of the first wall of inside, screed covering protection is built in the spray of the second wall of outside；The polymer waterproof anti-crack mortar is applied to the outside that screed is built in the spray of the second wall.This kind of gypsum insulation mortar exterior wall combined wall construction, material therefor whole prefabrication, transports in-site installation to or prefabrication transports on-site consolidation at plate.

Description

A kind of external wall body of gypsum mortar composite insulation board and its application

technical field

The invention relates to the technical enclosure structure field of house construction, in particular to a gypsum mortar composite thermal insulation board outer wall body, the structure can be constructed on site by dry method, and can also be prefabricated in a factory and installed on site.

Background technique

1. Traditional external wall enclosure structure system

The traditional external wall enclosure structure includes steel structure, concrete structure, and wood structure. The self-supporting walls are all composed of masonry. Masonry (brick-concrete structure) is a wall or column made of blocks and mortar, including brick masonry, block masonry, stone masonry and wall panel masonry. In general engineering construction, masonry It accounts for about 1/2 of the weight of the entire building, and accounts for about 1/3 of the labor and cost. It is an important material for construction projects.

The disadvantages of masonry construction are:

1. The strength of the masonry is low, the cross-sectional size of the components is large, the amount of materials is large, and the weight is heavy.

2. The masonry is built by hand, and the construction labor is heavy.

3. The tensile strength, flexural strength and shear strength of the masonry are very low, so the earthquake resistance is poor, and the damage is heavy when it is subjected to an earthquake.

2. Modern prefabricated self-supporting exterior wall panel system

It is assembled from prefabricated large wall panels (boards), also known as large slab buildings. It is the main type of fully prefabricated buildings in industrialized system buildings. Plate construction can reduce structural weight, improve labor productivity, expand the usable area and earthquake resistance of the building. The key problem of large-slab buildings is the design of joints, which should ensure the integrity of the connection of components in the structure (the connection methods between the plates mainly include welding, bolt connection and integral connection of post-cast concrete).

The main disadvantages of slab construction are:

1. There are greater constraints on the shape and layout of buildings;

2. The dimensional accuracy is extremely high and the adaptability is poor; it is easy to produce production problems such as missing edges and corners, uneven edges and corners, uneven warping, and flying out of convex ribs;

3. During the transportation and hoisting process, the surface of the board often cracks or even breaks;

4. It is easy to cause blockage, falling off, position deviation of pre-buried pipelines, obstacles when threading on the construction site, etc.;

5. The cost of materials for production and installation is high;

6. Transportation is difficult and transportation costs are high;

3. Low utilization rate of industrial by-product gypsum, especially phosphogypsum

The annual production of industrial by-product gypsum in my country is about 184 million tons, of which 70 million tons of phosphogypsum are newly added every year; the cumulative stockpiling of phosphogypsum exceeds 300 million, and the utilization rate is less than 20%, most of which are discarded as waste.

The storage of phosphogypsum waste slag occupies a large amount of land; the acid and other harmful substances contained in it are likely to pollute the surrounding environment, which is contrary to the basic national policy of environmental protection in my country. If the application and disposal are not increased, the development of the phosphate fertilizer industry will be greatly affected.

At present, industrial by-products such as phosphogypsum gypsum are mainly used in cement retarders, paper-faced gypsum boards and gypsum hollow blocks, and the consumption tends to be saturated, so other application directions must be expanded.

Contents of the invention

The object of the present invention is to provide a gypsum mortar composite insulation board exterior wall body to solve the problems raised in the above background technology.

To achieve the above object, the present invention provides the following technical solutions:

A gypsum mortar composite thermal insulation board exterior wall, including steel, steel mesh, high-efficiency thermal insulation board, first wall sprayed mortar layer, second wall sprayed mortar layer, polymer waterproof anti-crack mortar and anti-corrosion mesh cloth ; One side or both sides of the profiled steel are equipped with a steel mesh and fixed with the beam-column structure, and are arranged inside the high-efficiency insulation board, the first wall sprayed mortar layer, and the second wall sprayed mortar layer, and the profiled steel, Steel mesh, high-efficiency thermal insulation board, and wall sprayed mortar form an integrated structure; the high-efficiency thermal insulation board is installed on profiled steel or steel mesh, and the first wall on the inside is sprayed with mortar, and the second wall on the outside is sprayed. The mortar layer is covered and protected; the polymer waterproof and anti-cracking mortar is applied on the outside of the second wall sprayed mortar layer, and an anti-corrosion mesh cloth is buried to form a waterproof protective layer and an anti-cracking layer on the outside of the wall.

The steel mesh can also be replaced by a reinforced mesh, which is buried in the sprayed mortar layer of the wall on the side where the steel mesh is not installed as required; the reinforced mesh includes: glass fiber mesh cloth (common, medium-alkali or alkali-resistant), yarn Mesh, fine wire mesh, etc.

This scheme uses section steel + steel wire mesh as the skeleton, and forms a whole with structural beams and columns through the connection of section steel and steel structure, concrete structure, and wooden structure; , non-combustible, sound insulation, heat insulation as a flexible material, using continuous spraying method to ensure that the wall is seamless, with flexible shape, seamless docking, high shear strength, good seismic performance, no hollowing, no cracking, and water seepage resistance At the same time, the materials used are all prefabricated in the factory and delivered to the site for installation. The wall spraying mortar is constructed with special equipment. The site only needs to be connected to water and electricity to complete the process from powder to slurry to spraying. A series of actions of the wall, the site is clean and neat, no waste and no garbage (only packaging bags can be recycled), which is in line with the prefabricated dry construction method.

This scheme is easy to operate, quick to construct, and low in price, and can solve the problems of light weight, fire prevention, crack resistance, sound insulation, energy saving, and construction of the self-supporting wall at one time. After testing, the fire resistance limit of this wall structure exceeds three hours, the sound insulation is greater than 45dB, and the heat transfer coefficient is less than or equal to 0.9W/(m ² .k).

As a preferred technical solution of the present invention, the construction sequence is characterized by: installing profiled steel and fixing it with beams and columns → installing steel mesh on the inside and outside of the profiled steel (the inner side is hot-dip galvanized steel wire mesh, and the outer side is ribbed expanded mesh) → installation is efficient Between the two steel meshes of the insulation board → punching the walls on the inner and outer sides → spraying the mortar on the inner and outer walls and scraping it flat → scraping the polymer waterproof and anti-cracking mortar on the outer side and implanting the anti-corrosion net.

As a preferred technical solution of the present invention, the section steel is anti-corrosion treated 30*30*1.2mm U-section steel, installed with a vertical spacing of 600mm and a horizontal spacing of 1000mm, and is fixed to beams and columns.

As a further preferred solution of the present invention, the outer side of the steel mesh is a reinforced expanded mesh with a size of 4.5*15*0.6mm, and the inner side is a hot-dip galvanized steel mesh with a mesh aperture of 10*10*0.6mm.

As a preferred technical solution of the present invention, the wall sprayed mortar is used on both sides of the wall, and its technical index is:

project name dry density Compressive strength Thermal Conductivity Combustion performance level unit kg/m3 MPa [w/(m.K)] technical indicators ≤900 ≥3.0 ≤0.30 A

As a preferred technical solution of the present invention, the high-efficiency thermal insulation board is an EPS molded polystyrene board, and its technical indicators are:

project name Apparent density Volume water absorption Thermal Conductivity Combustion performance level unit kg/ ^m3 % [w/(m.K)] mm technical indicators ≤22 ≤6 ≤0.045 B

As a preferred solution of the present invention, the reinforcing net is coated with medium-alkali glass fiber mesh cloth, and its technical index is:

As a preferred technical solution of the present invention, the technical indicators of the polymer waterproof and anti-crack mortar are:

As a preferred technical solution of the present invention, the anti-corrosion net is an alkali-resistant glass fiber mesh cloth, and its technical index is:

As a preferred technical solution of the present invention, the wall sprayed mortar should be completely dry before the construction of the polymer waterproof and anti-crack mortar.

Beneficial effect

Compared with traditional masonry walls and modern prefabricated large slabs, this new type of external wall sprayed structure has good overall performance of the system, good earthquake resistance, light and dense walls, sound insulation, heat insulation, fire prevention, and comfort. , The construction is simple and fast, and the construction environment is clean and tidy. At the same time, a large amount of industrial by-product gypsum such as phosphogypsum is consumed, turning waste into treasure, and solving two "pain points" in the market in one fell swoop.

1. Factory prefabrication, on-site mechanized construction, no garbage, fast construction speed, high quality and low price. The materials involved in the wall structure of the present invention include section steel, steel mesh, wall spray mortar, high-efficiency insulation board, reinforced mesh, polymer waterproof and anti-crack mortar, and anti-corrosion mesh, all of which are produced in the factory and transported to the site for installation. The industrial policy of "prefabricated buildings" advocated solves the problems of heavy traditional masonry materials, poor seismic performance, slow construction speed, high price of prefabricated slabs, difficult transportation, and difficult installation.

2. The materials used in the wall structure of the present invention have single specifications, are easy to organize, fast in construction speed, employ less people, controllable in material quality and construction quality, and the site is civilized, clean and hygienic without garbage. All the materials used are prefabricated in the factory and mixed uniformly in bags and shipped to the site. Special equipment is used for spraying. During construction, it is only necessary to connect electricity and water to enter the machine. Fully meet the requirements of dry work.

3. The raw materials used in the wall spraying mortar and gypsum insulation mortar of the present invention are industrial solid waste phosphogypsum or other by-product gypsum, which can completely absorb the newly added waste slag every year and the original piled waste slag, turning waste into treasure in one fell swoop Solve the environmental protection pressure of by-product gypsum enterprises such as phosphate fertilizer plants and the environmental protection pressure of local governments.

4. The wall structure of the present invention replaces traditional masonry materials, which can reduce the dependence of blocks on laterite, cement, etc. on natural resources and high energy-consuming materials, and contribute to the protection of green mountains and green waters.

5. The wall structure of the present invention has excellent properties such as light weight, non-combustibility, sound insulation, heat insulation, and moisture absorption, and can meet residential requirements such as fire prevention, energy saving, sound insulation, and comfort.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present invention;

Figure 2 is a side view of the present invention.

In the figure: 1-shaped steel, 2-steel mesh, 3-high-efficiency insulation board, 4-sprayed mortar for the first wall, 5-sprayed sand layer for the second wall, 6-polymer waterproof and anti-cracking mortar, 7- Anti-corrosion net.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to Fig. 1-2, three kinds of embodiments provided by the present invention:

Embodiment one

A gypsum mortar composite insulation board exterior wall with a thickness of 125mm, including 60mm high-efficiency insulation board, 30mm wall spray mortar, 5mm polymer waterproof and anti-cracking mortar layer, and a wall heat transfer coefficient of 0.63 [W/m2 .K], including section steel, steel mesh, high-efficiency insulation board, sprayed mortar layer for the first wall, sprayed mortar layer for the second wall, polymer waterproof and anti-cracking mortar and anti-corrosion mesh cloth. Steel mesh is installed on both sides of the profiled steel and fixed to the beam-column structure, and is installed inside the high-efficiency thermal insulation board, the first wall sprayed mortar layer, and the second wall sprayed mortar layer, and the profiled steel, steel mesh, and high-efficiency thermal insulation The board and the wall sprayed mortar form an integrated structure; the high-efficiency thermal insulation board is installed on the profiled steel or steel mesh, and is covered and protected by the first wall sprayed mortar layer on the inner side and the second wall sprayed mortar layer on the outer side; The polymer waterproof and anti-cracking mortar is applied on the outer side of the sprayed mortar layer of the second wall, and the anti-corrosion mesh cloth is embedded to form a waterproof protective layer and an anti-cracking layer on the outer side of the wall.

The construction sequence is characterized by: installing profiled steel and fixing it with beams and columns → installing ribbed expansion nets on the outside of the profiled steel → installing high-efficiency insulation panels → installing hot-dip galvanized steel wire mesh on the inside of the profiled steel → punching reinforcement on the walls on both sides → from the outside Spray the mortar on the outer wall from the inside and scrape it with the ribs → spray the mortar on the inner wall from the outside to the inside and scrape it with the ribs → scrape the polymer waterproof and anti-cracking mortar on the outside and implant the anti-corrosion net.

The section steel is C-section steel with a specification of 30*30*1.2, which is arranged and welded according to a vertical interval of 600 mm and a horizontal interval of 1000 mm, and connected to the beam-column structure.

The outer side of the steel wire mesh is a reinforced expanded mesh with a specification of 4.5*15*0.6mm, and the inner side is a hot-dip galvanized steel mesh with a mesh aperture of 10*10*0.6mm.

The wall spraying mortar is sprayed on both sides of the wall, each with a thickness of 30mm, and its technical index is:

project name dry density Compressive strength Thermal Conductivity Combustion performance level unit kg/m3 MPa [w/(m.K)] technical indicators ≤900 ≥3.0 ≤0.30 A

The high-efficiency thermal insulation board is an EPS molded polystyrene board, used in the middle of the wall, with a thickness of 60mm, and its technical indicators are:

project name Apparent density Volume water absorption Thermal Conductivity Combustion performance level unit kg/ ^m3 % [w/(m.K)] mm technical indicators ≤22 ≤6 ≤0.045 B

The polymer waterproof and anti-cracking mortar is batch-scraped on the sprayed mortar layer of the outer wall of the outer wall and implanted with alkali-resistant glass fiber mesh cloth to smooth it, forming a waterproof protective layer and an anti-cracking layer with a thickness of 5mm. Its technical indicators are:

The alkali-resistant glass fiber mesh cloth is paved after scraping the polymer waterproof and anti-crack mortar with a trowel and implanted with the flattening of the mortar. Its technical indicators are:

The wall spraying mortar is sprayed by special equipment. On site, only the water source and power supply need to be connected to the equipment interface, and the wall spraying mortar is poured into the equipment inlet to spray. The site is clean and tidy, free of materials and garbage, Comply with assembly construction requirements.

Embodiment two

A gypsum mortar composite insulation board exterior wall with a thickness of 145mm, including 80mm high-efficiency insulation board, 30mm wall sprayed mortar layer, 5mm polymer waterproof and anti-cracking mortar layer, and 0.51 [W/ m2.K]. Including profiled steel 1, steel wire mesh 2, high-efficiency thermal insulation board 3, first wall sprayed mortar layer 4, polymer waterproof and anti-cracking mortar 5, anti-corrosion mesh cloth 6 and second wall sprayed mortar layer 7, the profiled steel Steel mesh is installed on the outside and fixed to the beam-column structure. It is installed inside the high-efficiency insulation board, the first wall sprayed mortar layer, and the second wall sprayed mortar layer. The steel mesh, steel mesh, high-efficiency insulation board, and wall The sprayed mortar forms an integrated structure; the high-efficiency thermal insulation board is installed on the profile steel or steel mesh, and the first wall sprayed mortar layer on the inner side is implanted with a reinforcing mesh, and the second wall sprayed mortar layer on the outer side is covered and protected; The polymer waterproof and anti-cracking mortar is applied on the outer side of the sprayed mortar layer of the second wall, and the anti-corrosion mesh cloth is embedded to form a waterproof protective layer and an anti-cracking layer on the outer side of the wall.

The construction sequence is characterized by: installing profiled steel and fixing it with beams and columns → installing ribbed expansion nets on the outside of the profiled steel → installing high-efficiency thermal insulation boards → punching reinforcements on both inner and outer walls → spraying mortar on the outside wall and punching reinforcements Strip scraping → Spray the first wall spray mortar on the inside and implant the reinforcing mesh and punching ribs scraping → Scrape the polymer waterproof and anti-cracking mortar on the outside and implant alkali-resistant glass fiber mesh cloth.

The section steel is a U-section steel with a specification of 40*40*1.2, arranged and welded according to a vertical interval of 500 mm and a horizontal interval of 1000 mm, and connected to the beam-column structure.

The steel mesh is a reinforced mesh with a specification of 4.5*15*1.0mm.

The wall spraying mortar is sprayed on both sides of the wall, each with a thickness of 30mm, and its technical indicators are:

project name dry density Compressive strength Thermal Conductivity Combustion performance level unit kg/m3 MPa [w/(m.K)] technical indicators ≤900 ≥3.0 ≤0.30 A

The high-efficiency thermal insulation board is an EPS molded polystyrene board, used in the middle of the wall, with a thickness of 80mm, and its technical indicators are:

project name Apparent density Volume water absorption Thermal Conductivity Combustion performance level unit kg/ ^m3 % [w/(m.K)] mm technical indicators ≤22 ≤6 ≤0.045 B

The reinforcing net is coated with medium-alkali glass fiber mesh cloth, and its technical index is:

The polymer waterproof and anti-cracking mortar is batch-scraped on the sprayed mortar layer of the outer wall and implanted with alkali-resistant glass fiber mesh cloth for smoothing to form a waterproof protective layer and an anti-cracking layer with a thickness of 5mm. Its technical indicators are:

The anti-corrosion net is an alkali-resistant glass fiber mesh cloth, which is spread after scraping the polymer waterproof and anti-crack mortar with a trowel and implanted with the flattening of the mortar. Its technical indicators are:

The wall spraying mortar is sprayed by special equipment. On site, only the water source and power supply need to be connected to the equipment interface, and the wall spraying mortar is poured into the equipment inlet to spray. The site is clean and tidy, free of materials and garbage, Comply with assembly construction requirements.

Embodiment Three

A gypsum mortar composite thermal insulation board exterior wall with a thickness of 103mm, including 60mm high-efficiency thermal insulation board, 20mm wall sprayed mortar layer, 3mm polymer waterproof and anti-cracking mortar layer, and 0.67[W/ m2.K], including section steel 1, steel wire mesh 2, high-efficiency thermal insulation board 3, the first wall sprayed mortar layer 4, polymer waterproof and anti-cracking mortar 5, anti-corrosion mesh cloth 6 and the second wall sprayed mortar layer 7 , steel mesh is installed on the outside of the section steel and fixed with the beam-column structure, and is arranged inside the high-efficiency insulation board, the first wall spraying mortar layer, and the second wall spraying mortar layer, and the section steel, steel mesh, and high-efficiency The thermal insulation board and the wall sprayed mortar form an integrated structure; the high-efficiency thermal insulation board is installed on the profile steel or steel mesh, and is covered and protected by the first wall sprayed mortar layer on the inner side and the second wall sprayed mortar layer on the outer side The polymer waterproof anti-cracking mortar is applied on the outside of the second wall sprayed mortar layer, and the anti-corrosion mesh cloth is buried to form a waterproof protective layer and an anti-cracking layer on the outside of the wall.

The construction sequence is characterized by: installing square steel and fixing it with beams and columns → installing ribbed expansion nets on the outside of the square steel → installing high-efficiency insulation boards → punching reinforcement on the walls on both sides of the inside and outside (the outer side is 20mm higher than the shaped steel, and the inner side is higher than the shaped steel 10mm)→Spray the mortar on the inner and outer walls and scrape it flat→Scrape the polymer waterproof and anti-cracking mortar on the outside with a thickness of 3mm→Lay the alkali-resistant glass fiber mesh cloth and press it into the anti-cracking mortar.

The section steel is a square section steel with a specification of 30*40*1.2, which is arranged and welded according to a spacing of 500mm vertically and 1000mm horizontally and connected with the beam-column structure.

The steel wire mesh is a reinforced expanded mesh with a specification of 4.5*15*0.8mm.

The wall spraying mortar is sprayed on both sides of the wall, each with a thickness of 20mm, and its technical index is:

project name dry density Compressive strength Thermal Conductivity Combustion performance level unit kg/m3 MPa [w/(m.K)] technical indicators ≤900 ≥3.0 ≤0.30 A

The high-efficiency thermal insulation board is an EPS molded polystyrene board, used in the middle of the wall, with a thickness of 60mm, and its technical indicators are:

project name Apparent density Volume water absorption Thermal Conductivity Combustion performance level unit kg/ ^m3 % [w/(m.K)] mm technical indicators ≤22 ≤6 ≤0.045 B

The polymer waterproof and anti-cracking mortar is batch-scraped on the sprayed mortar layer of the outer wall of the outer wall and implanted with alkali-resistant glass fiber mesh cloth for smoothing to form a waterproof protective layer and an anti-cracking layer with a thickness of 3 mm. Its technical indicators are:

The technical index of described alkali-resistant glass fiber mesh cloth is:

The wall spraying mortar is sprayed by special equipment. On site, only the water source and power supply need to be connected to the equipment interface, and the wall spraying mortar is poured into the equipment inlet to spray. The site is clean and tidy, free of materials and garbage, Comply with assembly construction requirements.

It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is a relationship between these entities or operations. There is no such actual relationship or order between them. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device. without further restrictions. The phrase "the inclusion of an element defined by ... does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising said element".

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (8)

1. A gypsum mortar composite thermal insulation board exterior wall, including steel 1, steel mesh 2, high-efficiency thermal insulation board 3, the first wall sprayed mortar layer 4, the second wall sprayed mortar layer 5, polymer waterproof Anti-cracking mortar 6 and anti-corrosion mesh cloth 7; steel mesh 2 is installed on one or both sides of the section steel 1 and fixed with the beam and column structure, and is arranged on the high-efficiency thermal insulation board 3, the first wall sprayed mortar layer 4, the second The interior of the second wall spraying mortar layer 5, and the profiled steel, steel mesh, high-efficiency thermal insulation board, and wall spraying mortar form an integrated structure; the high-efficiency thermal insulation board 3 is installed on the profiled steel 1 or the steel mesh 2, and Covered and protected by the first wall sprayed mortar layer 4 on the inner side and the second wall sprayed mortar layer 5 on the outer side; the polymer waterproof and anti-cracking mortar 6 is applied on the outside of the second wall sprayed mortar layer, and buried anti-corrosion Mesh cloth 7 forms the waterproof protective layer and anti-cracking layer on the outside of the body of wall with it. 2. A gypsum mortar composite thermal insulation board exterior wall according to claim 1, its construction sequence is characterized by: installing profiled steel and fixing it with beams and columns → installing steel mesh on the profiled steel → installing high-efficiency thermal insulation board → both sides inside and outside The wall surface is reinforced and higher than the section steel → spray the wall mortar on the inside and outside and scrape it flat → scrape the polymer waterproof and anti-cracking mortar on the outside and implant the anti-corrosion mesh to flatten it. 3. A gypsum mortar composite insulation board exterior wall according to claim 1, characterized in that: the profiled steel includes cold-formed thin-walled profiled steel, angle steel, channel steel, H-shaped steel, square tube, round tube and other profiles , The section steel needs to be treated with antirust, and the size is set according to the structural requirements. 4. A gypsum mortar composite insulation board exterior wall according to claim 1, characterized in that: said steel wire mesh is braided or welded with low carbon steel wire, medium carbon steel wire, high carbon steel wire, stainless steel wire and other materials A general term for meshed materials, including steel mesh (pulled mesh), steel mesh (woven mesh) and welded mesh. The steel mesh needs to be treated with anticorrosion, and the size is set according to the structural requirements. The steel mesh can also be replaced by a reinforced mesh. 5. A gypsum mortar composite insulation board exterior wall according to claim 1, characterized in that: said wall sprayed mortar is made of industrial by-product gypsum such as phosphogypsum as the cementing material, vitrified microbeads (or perlite) as a lightweight aggregate, compounded with various admixtures in a certain ratio in the factory to mix into a single component, packed in bags, transported to the site, and sprayed with special equipment. On site, you only need to connect the water source and power supply to the equipment interface, and pour the wall spray mortar into the equipment inlet to spray the building; the site is clean and tidy, free of materials and garbage, and meets the requirements of prefabricated construction. The technical indicators of the sprayed mortar are: project name dry density Compressive strength Thermal Conductivity Combustion performance level unit kg/m3 MPa [w/(m.K)] technical indicators ≤1000 ≥2.5 ≤0.40 A 6. A gypsum mortar composite insulation board exterior wall according to claim 1, characterized in that: the high-efficiency insulation board includes EPS molded polystyrene board, XPS extruded polystyrene board, PU rigid polyurethane foam Foam board (or polyurethane on-site foaming), rock (mineral) wool board, glass wool products, foam glass, polyethylene foam, phenolic foam and other high-efficiency and energy-saving materials. 7. A gypsum mortar composite insulation board exterior wall according to claim 1, characterized in that: said polymer waterproof and anti-crack mortar is made of cement, quartz sand, waterproofing agent, polymer and various admixtures Proportionally mixed and produced in the factory into a single component, transported to the site according to the water-cement ratio requirements, add water and stir to form a slurry, scrape it on the wall with a toothed knife, lay anti-corrosion mesh and flatten it with a spatula to form a waterproof protective layer and anti-corrosion Cracked layer, its technical index is: project name water permeability Compressive strength fold ratio tensile bond strength Tensile bond strength after immersion in water unit ml MPa - map map technical indicators ≤2.5 ≥20.0 ≤3.0 ≥0.70 ≥0.50 8. A gypsum mortar composite insulation board exterior wall according to claim 1, characterized in that: the anti-corrosion net comprises: coated medium-alkali glass fiber mesh cloth, alkali-resistant glass fiber mesh cloth, thermal Galvanized welded wire mesh, etc.