Insulation and decoration integrated ardealite outer wall structure and construction method thereof

Abstract

The invention discloses a heat preservation and decoration integrated ardealite outer wall structure and a construction method thereof, and belongs to the technical field of house buildings. The structure comprises an ardealite outer wall body and a damp-proof heat preservation decoration layer, and the damp-proof heat preservation decoration layer is connected with the outer wall face of the ardealite outer wall body through a plurality of connecting assemblies; the damp-proof heat-preservation decoration layer comprises a plurality of damp-proof heat-preservation decoration integrated plates which are spliced together. The ardealite outer wall body is mainly formed by building ardealite building blocks, and the use amount and consumption of ardealite are remarkably increased. The damp-proof heat-preservation decoration layer is connected with the outer wall face of the ardealite outer wall body through the multiple connecting assemblies, the connecting strength is large, connection is firm, and the damp-proof heat-preservation decoration layer is not prone to loosening. The damp-proof heat-preservation decoration layer is formed by splicing a plurality of damp-proof heat-preservation decoration integrated plates, the damp-proof and heat-preservation effects are good, the ardealite outer wall body located on the inner side of the damp-proof heat-preservation decoration layer can be well protected, and the service life of the ardealite outer wall body is prolonged.

Description

Technical Field

[0001] The invention relates to a thermal insulation decorative integrated phosphogypsum exterior wall structure and a construction method thereof, belonging to the technical field of house construction. Background Art

[0002] Industrial gypsum is an industrial by-product produced in the chemical production process, mainly including phosphogypsum and desulfurized gypsum. In the phosphoric acid production process, 4.5 to 5.5 tons of phosphogypsum are produced for every 1.0 ton of phosphoric acid produced. At present, phosphogypsum is mainly handled by stockpiling. The long-term storage of a large amount of industrial by-product gypsum not only occupies land, but also poses a great environmental safety hazard. The impurities such as fluoride, free phosphoric acid, P2O5, and phosphate contained in phosphogypsum are the main factors causing environmental pollution caused by phosphogypsum during the storage process. Wind erosion and rain erosion cause pollution of the atmosphere, water system and soil. At present, industrial by-product gypsum such as phosphogypsum is mainly used in cement retarders, paper-faced gypsum boards and gypsum hollow blocks. The consumption is saturated, so other application directions must be expanded.

[0003] To this end, a Chinese patent document with publication number CN108396885A discloses a gypsum mortar composite insulation board exterior wall and its application, the exterior wall comprising steel, steel mesh, high-efficiency insulation board, first wall sprayed mortar layer, second wall sprayed mortar layer, polymer waterproof and anti-cracking mortar and anti-corrosion mesh. The steel is installed with a steel mesh on one or both sides and fixed to the beam-column structure, arranged inside the high-efficiency insulation board, the first wall sprayed mortar layer, and the second wall sprayed mortar layer, and the steel, steel mesh, high-efficiency insulation board, and wall sprayed mortar form an integrated structure; the high-efficiency insulation board is installed on the steel or steel mesh, and is covered and protected by the first wall sprayed mortar layer on the inside and the second wall sprayed mortar layer on the outside; the polymer waterproof and anti-cracking mortar is applied to the outside of the second wall sprayed mortar layer. This type of gypsum insulation mortar exterior wall composite wall structure uses materials that are all prefabricated in the factory and transported to the site for installation, or prefabricated panels are transported to the site for assembly, solving the problems of traditional masonry materials being heavy, poor in seismic performance, slow in construction speed, and high in price, difficult in transportation, and difficult in installation.

[0004] However, the exterior wall has the following shortcomings:

[0005] First, only wall spraying mortar and gypsum insulation mortar use phosphogypsum, and the consumption of phosphogypsum is small;

[0006] Second, due to the material difference, the bonding force between the polymer waterproof and anti-cracking mortar and the second wall sprayed sand layer is relatively small, and the thermal expansion coefficients of the two are inconsistent, which can easily lead to cracking or even falling off of the polymer waterproof and anti-cracking mortar. In addition, since the phosphogypsum used in the second wall sprayed sand layer is an air-hardening material with a low softening coefficient, it will expand after absorbing water, aggravating the cracking and falling off of the polymer waterproof and anti-cracking mortar, and ultimately leading to the gradual destruction of the polymer waterproof and anti-cracking mortar and the second wall sprayed sand layer. Summary of the invention

[0007] In order to solve the above technical problems, the present invention provides a thermal insulation decorative integrated phosphogypsum exterior wall structure and a construction method thereof.

[0008] The present invention is achieved through the following technical solutions:

[0009] A thermal insulation decorative integrated phosphogypsum exterior wall structure, comprising a phosphogypsum exterior wall body and a moisture-proof thermal insulation decorative layer, wherein the moisture-proof thermal insulation decorative layer is connected to the exterior wall surface of the phosphogypsum exterior wall body through a plurality of connecting components;

[0010] The moisture-proof and heat-insulating decorative layer comprises a plurality of moisture-proof and heat-insulating decorative integrated panels assembled together.

[0011] The lower end of the moisture-proof and heat-insulating decorative integrated board is concave inwardly to form a slot along its length direction, and the upper end is convex outwardly to form a strip along its length direction, and the shape and size of the strip are adapted to the shape and size of the slot.

[0012] The upper end of the moisture-proof and heat-insulating decorative integrated board is provided with a connecting plate along its length direction on one side of the clamping strip, and the side of the connecting plate close to the phosphogypsum outer wall is coplanar with the side of the moisture-proof and heat-insulating decorative integrated board close to the phosphogypsum outer wall.

[0013] The moisture-proof and heat-insulating decorative integrated board comprises a flame-retardant heat-insulating board and a metal plate encapsulated on the outer surface of the flame-retardant heat-insulating board;

[0014] An aluminum foil protective layer for moisture-proof and heat-insulating is arranged on the side of the moisture-proof and heat-insulating decorative integrated panel close to the phosphogypsum outer wall.

[0015] The flame retardant heat-insulating board is a high-density polyurethane foam board that has been subjected to flame retardant treatment.

[0016] The surface of the metal plate on the side of the moisture-proof and heat-insulating decorative integrated panel away from the phosphogypsum outer wall is subjected to a profiling process to form an embossed surface, and a coating film is provided on the embossed surface.

[0017] The connection assembly comprises a plastic expansion tube and a galvanized screw. The plastic expansion tube is fixed in the phosphogypsum outer wall. One end of the galvanized screw passes through the moisture-proof and heat-insulating decorative layer and is connected to the plastic expansion tube.

[0018] A phosphogypsum plaster layer is provided on the inner wall surface of the phosphogypsum outer wall, and a decorative layer is provided on the phosphogypsum plaster layer.

[0019] A construction method for a thermal insulation decorative integrated phosphogypsum exterior wall structure comprises the following steps:

[0020] Step 1: Complete the construction of the phosphogypsum exterior wall;

[0021] Step 2: Complete the construction of moisture-proof and thermal insulation decorative layer. The construction of moisture-proof and thermal insulation decorative layer includes the following steps:

[0022] Step 1: Install the starting piece: install and fix the starting piece to the phosphogypsum exterior wall and / or concrete foundation through multiple connection components;

[0023] Step 2, installation of the bottom moisture-proof and heat-insulating decorative integrated board: insert one end of the bottom moisture-proof and heat-insulating decorative integrated board with a slot into the starting piece, and connect the lower part of the moisture-proof and heat-insulating decorative integrated board to the phosphogypsum outer wall through multiple connecting components, and then connect the connecting plate on the moisture-proof and heat-insulating decorative integrated board to the phosphogypsum outer wall through multiple connecting components;

[0024] Step 3, installation of other layers of moisture-proof and heat-insulating decorative integrated panels: insert the card slot at the lower end of the second layer of moisture-proof and heat-insulating decorative integrated panels into the card strip at the upper end of the lowest layer of moisture-proof and heat-insulating decorative integrated panels, and connect the connecting plate on the second layer of moisture-proof and heat-insulating decorative integrated panels to the phosphogypsum outer wall through multiple connecting components, and the installation of the second layer of moisture-proof and heat-insulating decorative integrated panels can be completed. By analogy, the installation of moisture-proof and heat-insulating decorative integrated panels can be completed layer by layer from bottom to top.

[0025] Step 4, installation of the closing piece: fix the bottom plate of the closing piece to the phosphogypsum outer wall through multiple connection components, and make the upper end of the uppermost moisture-proof and heat-insulating decorative integrated board be inserted into the closing piece to keep it fixed;

[0026] Step 5: Install the lines at the doors, windows and openings: Use structural adhesive to install the door and window packages and F parts, and buckle the door and window packages and F parts to the corresponding moisture-proof and heat-insulating decorative integrated panels;

[0027] Step 6, glue treatment of installation seams: glue treatment is performed on the installation seams between moisture-proof and heat-insulating decorative integrated panels, between moisture-proof and heat-insulating decorative integrated panels and structural columns of the phosphogypsum exterior wall, between moisture-proof and heat-insulating decorative integrated panels and starting pieces, closing pieces, door and window packages or F pieces, between starting pieces and concrete foundations, between closing pieces and ring beams of the phosphogypsum exterior wall, and between door and window packages and F pieces and door and window frames;

[0028] Step 3: construct the phosphogypsum plaster layer and the decorative layer in sequence on the inner wall surface of the phosphogypsum exterior wall.

[0029] The phosphogypsum exterior wall construction in step 1 includes the following steps:

[0030] Step A: Use cement bricks or concrete to build the lower waterproof and moisture-proof layer;

[0031] Step B, building a phosphogypsum block wall on the lower waterproof and moisture-proof layer, and reserving the casting position of the structural column and the ring beam, and completing the installation of the tie bars or pull tabs during the construction of the phosphogypsum block wall, and performing a pull test on the tie bars or pull tabs;

[0032] Step C, pouring structural columns and ring beams to obtain the phosphogypsum exterior wall;

[0033] The spacing between the multiple connection components installed at the middle elevation in step 2 is not greater than 600 mm, the diameter of the plastic expansion tube in the connection component is not less than 8 mm, the diameter of the galvanized screw is not less than 5 mm, and the surface of the galvanized screw is coated with sealant before use;

[0034] In the step 2, a center seam strip is installed at the seam of two adjacent moisture-proof and heat-insulating decorative integrated panels on the same layer;

[0035] The method of sequentially constructing a phosphogypsum plaster layer and a decorative layer on the inner wall surface of the phosphogypsum outer wall in step 3 comprises the following steps:

[0036] Step a, applying a surface layer of gray gypsum on the inner wall surface of the phosphogypsum exterior wall, and pressing an alkali-resistant glass fiber mesh into the surface layer of gray gypsum to form a phosphogypsum plaster layer, wherein the thickness of the phosphogypsum plaster layer is 3 mm to 5 mm;

[0037] Step b: applying latex paint on the phosphogypsum plaster layer, or pasting wallpaper on the phosphogypsum plaster layer to form a decorative layer.

[0038] The beneficial effects of the present invention are:

[0039] 1. The exterior wall of phosphogypsum is mainly built with phosphogypsum blocks, which significantly increases the amount and consumption of phosphogypsum, and is waste-saving and environmentally friendly.

[0040] 2. The moisture-proof and heat-insulating decorative layer is connected to the outer wall surface of the phosphogypsum outer wall through multiple connecting components. The connection strength is large and the connection is firm, so that the moisture-proof and heat-insulating decorative layer is not easy to loosen.

[0041] 3. The moisture-proof and heat-insulating decorative layer is assembled from multiple moisture-proof and heat-insulating decorative integrated panels. It has low requirements on the proficiency of construction workers, high construction efficiency and environmental protection, and the construction cost and material cost are lower than the existing exterior wall walls that are plastered with cement mortar and then painted, and the exterior walls are tiled or dry-hung with stone. The construction period of the exterior wall structure can be shortened by 2 / 3 compared with the traditional layered construction. In addition, the moisture-proof and heat-insulating decorative integrated panels do not have a series of problems such as water absorption and expansion, hollowing and cracking, and easy fading. They have good moisture-proof and heat-insulating effects, and solve the problem of poor waterproof and moisture-proof performance of phosphogypsum building materials. They can well protect the phosphogypsum exterior wall located inside it and extend the service life of the phosphogypsum exterior wall. In comparison, cement mortar is prone to deformation and cracking when the temperature difference between day and night is large, which affects the appearance of the wall and the anti-seepage effect of the wall.

[0042] 4. The card slot and the card strip cooperate with each other to position the upper and lower moisture-proof and thermal insulation decorative integrated panels, thereby improving the construction speed and efficiency of the moisture-proof and thermal insulation decorative layer, and ensuring that the surface of the moisture-proof and thermal insulation decorative layer formed by assembling multiple moisture-proof and thermal insulation decorative integrated panels is flat, beautiful, durable and vertical. In comparison, the wall with traditional cement mortar plastering + exterior wall paint has poor flatness and verticality due to high-altitude operation and the proficiency of workers, which affects the overall decorative effect of the exterior wall. In addition, cement mortar is generally mixed on-site manually, with large differences in mix ratios, and it is difficult to ensure strength, which affects the quality of the project. In severe cases, cracks or even falling off will occur, which not only seriously affects the appearance, but also poses a safety hazard of falling off and injuring pedestrians. In addition, the card slot and the card strip cooperate with each other to prevent water seepage at the joints of the upper and lower moisture-proof and thermal insulation decorative integrated panels.

[0043] 5. The outer surface of the moisture-proof and heat-insulating decorative integrated board is decorated with relief finishes and coatings, which improves the aesthetics of the moisture-proof and heat-insulating decorative layer. Compared with the traditional exterior walls with tiled tiles and exterior walls with cement mortar and paint, this decoration method does not have the safety risk of falling off from high altitudes, nor does it have a series of problems such as water absorption and expansion, hollow cracking, and easy fading.

[0044] 6. The inner wall of the phosphogypsum exterior wall is plastered with phosphogypsum, which further increases the amount of phosphogypsum used in the thermal insulation and decorative integrated phosphogypsum exterior wall structure. Moreover, the materials used for the phosphogypsum plaster layer and the phosphogypsum exterior wall are both phosphogypsum, and the two have strong bonding strength, so the phosphogypsum plaster layer is not easy to fall off. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is a structural schematic diagram of the thermal insulation decorative integrated phosphogypsum exterior wall structure of the present invention;

[0046] Figure 2 for Figure 1 Section view along AA;

[0047] Figure 3It is a structural schematic diagram of a moisture-proof and heat-insulating decorative integrated panel of the present invention;

[0048] Figure 4 It is a structural schematic diagram of the starting member of the present invention;

[0049] Figure 5 It is a structural schematic diagram of the closing member of the present invention;

[0050] Figure 6 It is a structural schematic diagram of the door and window package of the present invention;

[0051] Figure 7 It is a structural schematic diagram of the F component of the present invention;

[0052] Figure 8 It is a schematic structural diagram of the center seam strip of the present invention;

[0053] Fig. 9 It is a construction step flowchart of the present invention.

[0054] In the figure: 1-phosphogypsum exterior wall, 10-structural column, 11-ring beam, 12-phosphogypsum block wall, 2-moisture-proof and thermal insulation decorative layer, 20-moisture-proof and thermal insulation decorative integrated board, 200-connecting plate, 201-card strip, 202-metal plate, 203-aluminum foil protective layer, 204-flame retardant thermal insulation board, 205-card slot, 21-starting piece, 22-closing piece, 23-door and window package, 24-F piece, 25-center seam strip, 3-phosphogypsum plaster layer, 4-decorative layer. DETAILED DESCRIPTION

[0055] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the description.

[0056] like Figures 1 to 9 As shown, a thermal insulation decorative integrated phosphogypsum exterior wall structure described in the present invention comprises a phosphogypsum exterior wall body 1 and a moisture-proof thermal insulation decorative layer 2, wherein the moisture-proof thermal insulation decorative layer 2 is connected to the exterior wall surface of the phosphogypsum exterior wall body 1 through a plurality of connecting components;

[0057] The moisture-proof and heat-insulating decorative layer 2 includes a plurality of moisture-proof and heat-insulating decorative integrated panels 20 assembled together. When in use, the phosphogypsum outer wall 1 is mainly constructed with phosphogypsum blocks, which significantly increases the amount and consumption of phosphogypsum, and is waste-recycling and environmentally friendly. The moisture-proof and heat-insulating decorative layer 2 is connected to the outer wall surface of the phosphogypsum outer wall 1 through a plurality of connecting components, and the connection strength is large and the connection is firm, so that the moisture-proof and heat-insulating decorative layer 2 is not easy to loosen. The moisture-proof and heat-insulating decorative layer 2 is assembled by a plurality of moisture-proof and heat-insulating decorative integrated panels 20, which has low requirements on the proficiency of construction workers, high construction efficiency and environmental protection, and the construction cost and material cost are lower than the existing exterior wall cement mortar plastered and then painted wall, and the exterior wall tiled or exterior wall dry hanging stone wall, and the construction period of the exterior wall structure can be shortened by 2 / 3 compared with the traditional layered construction. In addition, the moisture-proof and heat-insulating decorative integrated panel 20 does not have a series of problems such as water absorption and expansion, hollowing and cracking, and easy fading, and has good moisture-proof and heat-insulating effects, which solves the problem of poor waterproof and moisture-proof performance of phosphogypsum building materials, and can well protect the phosphogypsum exterior wall 1 located inside it, and prolong the service life of the phosphogypsum exterior wall 1; in comparison, cement mortar is prone to deformation and cracking under the condition of large temperature difference between day and night, which affects the beauty of the wall and the wall anti-seepage effect. In general, the moisture-proof and heat-insulating decorative integrated panel 20 has moisture-proof, heat-insulating, decorative and protective effects on the phosphogypsum exterior wall 1.

[0058] The lower end of the moisture-proof and heat-insulating decorative integrated panel 20 is concave inward to form a slot 205 along its length direction, and the upper end is convex outward to form a clip strip 201 along its length direction, and the shape and size of the clip strip 201 are adapted to the shape and size of the slot 205.

[0059] The upper end of the moisture-proof and heat-insulating decorative integrated panel 20 is provided with a connecting plate 200 along its length direction on one side of the clamping strip 201, and the side of the connecting plate 200 close to the phosphogypsum outer wall 1 is coplanar with the side of the moisture-proof and heat-insulating decorative integrated panel 20 close to the phosphogypsum outer wall 1.

[0060] The moisture-proof and heat-insulating decorative integrated panel 20 comprises a flame-retardant heat-insulating panel 204 and a metal panel 202 encapsulated on the outer surface of the flame-retardant heat-insulating panel 204;

[0061] The side of the moisture-proof and heat-insulating decorative integrated board 20 close to the phosphogypsum outer wall 1 is provided with an aluminum foil protective layer 203 for moisture-proof and heat-insulating. The moisture-proof and heat-insulating decorative integrated board 20 has flame retardant, heat-insulating, moisture-proof, heat-insulating and other functions. When in use, the metal plate 202 needs to have good rust resistance.

[0062] The flame retardant insulation board 204 is a high-density polyurethane foam board that has been flame retardant treated.

[0063] The surface of the metal plate 202 on the side of the moisture-proof and heat-insulating decorative integrated panel 20 away from the phosphogypsum outer wall 1 is subjected to a profiling process to form an embossed surface, and a coating film is provided on the embossed surface. The outer surface of the moisture-proof and heat-insulating decorative integrated panel 20 is decorated with an embossed surface and a coating film, thereby improving the aesthetics of the moisture-proof and heat-insulating decorative layer 2; compared with the traditional exterior wall with tiled tiles, cement mortar + paint, this decoration method does not have the safety risk of falling off from high altitude, nor does it have a series of problems such as water absorption and expansion, hollow cracking, and easy fading.

[0064] The connection assembly includes a plastic expansion tube and a galvanized screw. The plastic expansion tube is fixed in the phosphogypsum outer wall 1. One end of the galvanized screw passes through the moisture-proof and heat-insulating decorative layer 2 and is connected to the plastic expansion tube.

[0065] A phosphogypsum plaster layer 3 is provided on the inner wall surface of the phosphogypsum outer wall body 1, and a decorative layer 4 is provided on the phosphogypsum plaster layer 3. The inner wall surface of the phosphogypsum outer wall body 1 is plastered with phosphogypsum, which further increases the amount of phosphogypsum used in the thermal insulation decorative integrated phosphogypsum outer wall structure, and the materials used for the phosphogypsum plaster layer 3 and the phosphogypsum outer wall body 1 are both phosphogypsum, and the bonding strength between the two is large, and the phosphogypsum plaster layer 3 is not easy to fall off.

[0066] A construction method for a thermal insulation decorative integrated phosphogypsum exterior wall structure comprises the following steps:

[0067] Step 1: Complete the construction of the phosphogypsum exterior wall 1.

[0068] Step 2: Complete the construction of the moisture-proof and heat-insulating decorative layer 2. The construction of the moisture-proof and heat-insulating decorative layer 2 includes the following steps.

[0069] Step 1, installation of the starting member 21: installing and fixing the starting member 21 to the phosphogypsum outer wall 1 and / or the concrete foundation through a plurality of connection components.

[0070] Step 2, installation of the bottom layer of moisture-proof and heat-insulating decorative integrated panel 20: insert one end of the bottom layer of moisture-proof and heat-insulating decorative integrated panel 20 with the slot 205 into the starting piece 21, and connect the lower part of this layer of moisture-proof and heat-insulating decorative integrated panel 20 to the phosphogypsum outer wall 1 through multiple connecting components, and then connect the connecting plate 200 on this layer of moisture-proof and heat-insulating decorative integrated panel 20 to the phosphogypsum outer wall 1 through multiple connecting components.

[0071] Step 3, installation of other layers of moisture-proof and heat-insulating decorative integrated panels 20: insert the slot 205 at the lower end of the second layer of moisture-proof and heat-insulating decorative integrated panels 20 into the clip strip 201 at the upper end of the lowest layer of moisture-proof and heat-insulating decorative integrated panels 20, and connect the connecting plate 200 on the second layer of moisture-proof and heat-insulating decorative integrated panels 20 to the phosphogypsum exterior wall 1 through multiple connecting components. The installation of the second layer of moisture-proof and heat-insulating decorative integrated panels 20 is completed, and so on, completing the installation of the moisture-proof and heat-insulating decorative integrated panels 20 layer by layer from bottom to top. The card slot 205 cooperates with the card strip 201 to position the upper and lower moisture-proof and heat-insulating decorative integrated panels 20, thereby improving the construction speed and efficiency of the moisture-proof and heat-insulating decorative layer 2, and ensuring that the surface of the moisture-proof and heat-insulating decorative layer 2 formed by assembling multiple moisture-proof and heat-insulating decorative integrated panels 20 is flat, beautiful, durable and vertical. In comparison, the wall of traditional cement mortar plastering + exterior wall paint has poor flatness and verticality due to high-altitude operation and the proficiency of workers, which affects the overall decorative effect of the exterior wall. In addition, cement mortar is generally mixed on-site manually, with large differences in mix ratios, and it is difficult to ensure strength, which affects the quality of the project. In severe cases, cracks or even falling off will occur, which not only seriously affects the appearance, but also poses a safety hazard of falling off and injuring pedestrians. In addition, the card slot 205 cooperates with the card strip 201 to prevent water seepage at the joints of the upper and lower moisture-proof and heat-insulating decorative integrated panels 20. Except for the bottom layer of moisture-proof and heat-insulating decorative integrated panels 20, before assembling other layers of moisture-proof and heat-insulating decorative integrated panels 20, first apply sealant on the surface of the card slot 205 of the moisture-proof and heat-insulating decorative integrated panels 20 to further improve the anti-seepage ability of the joints of the upper and lower layers of moisture-proof and heat-insulating decorative integrated panels 20.

[0072] Step 4, installation of the closing piece 22: fix the bottom plate of the closing piece 22 to the phosphogypsum exterior wall 1 through a plurality of connecting components, and make the upper end of the topmost moisture-proof and heat-insulating decorative integrated panel 20 be inserted into the closing piece 22 to keep it fixed.

[0073] Step 5, installation of lines at doors, windows and openings: Use structural adhesive to install the door and window packages 23 and F parts 24, and buckle the door and window packages 23 and F parts 24 onto the corresponding moisture-proof and heat-insulating decorative integrated panels 20.

[0074] Step 6, glue treatment of installation seams: glue treatment is applied to the installation seams between the moisture-proof and heat-insulating decorative integrated panels 20, between the moisture-proof and heat-insulating decorative integrated panels 20 and the structural columns 10 of the phosphogypsum external wall 1, between the moisture-proof and heat-insulating decorative integrated panels 20 and the starting pieces 21, the closing pieces 22, the door and window packages 23 or the F pieces 24, between the starting pieces 21 and the concrete foundation, between the closing pieces 22 and the ring beam 11 of the phosphogypsum external wall 1, and between the door and window packages 23 and the F pieces 24 and the door and window frames. When in use, glue treatment is applied to all installation seams to improve the moisture-proof and anti-seepage capabilities of the moisture-proof and heat-insulating decorative layer 2.

[0075] Step 3: constructing the phosphogypsum plaster layer 3 and the decorative layer 4 on the inner wall surface of the phosphogypsum exterior wall 1 in sequence.

[0076] Before constructing the phosphogypsum outer wall 1 , first familiarize yourself with the drawings and prepare the relevant materials, and then position and lay out the phosphogypsum outer wall 1 .

[0077] The construction of the phosphogypsum exterior wall 1 in step 1 includes the following steps:

[0078] Step A: Use cement bricks or concrete to build the lower waterproof and moisture-proof layer;

[0079] Step B, building a phosphogypsum block wall 12 on the lower waterproof and moisture-proof layer, and reserving the casting positions of the structural columns 10 and the ring beams 11, and completing the installation of the tie bars or pull tabs during the construction of the phosphogypsum block wall 12, and performing a pull test on the tie bars or pull tabs;

[0080] Step C: pouring the structural column 10 and the ring beam 11 to obtain the phosphogypsum outer wall 1.

[0081] In the step 2, the spacing between the multiple connection components installed at the middle elevation is not greater than 600 mm, the diameter of the plastic expansion tube in the connection component is not less than 8 mm, the diameter of the galvanized screw is not less than 5 mm, and the galvanized screw is coated with sealant on its surface before use. Ensure that the moisture-proof and heat-insulating decorative layer 2 is firmly connected to the phosphogypsum outer wall 1 through the connection component.

[0082] In the step 2, the center seam strip 25 is installed at the seam of two adjacent moisture-proof and heat-insulating decorative integrated panels 20 in the same layer. When in use, the starting piece 21, the closing piece 22, the door and window package 23, the F piece 24 and the center seam strip 25 are made of aluminum alloy.

[0083] The method of sequentially constructing the phosphogypsum plaster layer 3 and the decorative layer 4 on the inner wall surface of the phosphogypsum outer wall 1 in step 3 comprises the following steps:

[0084] Step a: apply surface plaster on the inner wall surface of the phosphogypsum outer wall 1, and press the alkali-resistant glass fiber mesh into the surface plaster to form a phosphogypsum plaster layer 3, and the thickness of the phosphogypsum plaster layer 3 is 3mm to 5mm. The performance indicators of the surface plaster are shown in Table 1.

[0085] Table 1 Performance index of surface lime gypsum

[0086]

[0087] The performance indicators of alkali-resistant glass fiber mesh are shown in Table 2.

[0088] Table 2 Performance indexes of alkali-resistant glass fiber mesh

[0089] project unit index Weight per unit area g / m2 ≥130 Alkali-resistant breaking strength (warp and weft) N / 50mm ≥900

[0090] Step b: applying latex paint on the phosphogypsum plaster layer 3, or pasting wallpaper on the phosphogypsum plaster layer 3 to form a decorative layer 4.

Claims

1. A thermal insulation decorative integrated phosphogypsum exterior wall structure, characterized in that: It comprises a phosphogypsum outer wall (1) and a moisture-proof and heat-insulating decorative layer (2), wherein the moisture-proof and heat-insulating decorative layer (2) is connected to the outer wall surface of the phosphogypsum outer wall (1) via a plurality of connecting components; The moisture-proof and heat-insulating decorative layer (2) comprises a plurality of moisture-proof and heat-insulating decorative integrated panels (20) assembled together.

2. The thermal insulation decorative integrated phosphogypsum exterior wall structure according to claim 1, characterized in that: The lower end of the moisture-proof and heat-insulating decorative integrated panel (20) is concave inwardly to form a slot (205) along its length direction, and the upper end is convex outwardly to form a clip strip (201) along its length direction, and the shape and size of the clip strip (201) are compatible with the shape and size of the clip slot (205).

3. The thermal insulation decorative integrated phosphogypsum exterior wall structure according to claim 2, characterized in that: The upper end of the moisture-proof and heat-insulating decorative integrated panel (20) is provided with a connecting plate (200) along its length direction on one side of the clamping strip (201), and the side surface of the connecting plate (200) close to the phosphogypsum outer wall (1) is coplanar with the side surface of the moisture-proof and heat-insulating decorative integrated panel (20) close to the phosphogypsum outer wall (1).

4. The thermal insulation decorative integrated phosphogypsum exterior wall structure according to claim 1, characterized in that: The moisture-proof and heat-insulating decorative integrated panel (20) comprises a flame-retardant and heat-insulating panel (204) and a metal panel (202) encapsulated on the outer surface of the flame-retardant and heat-insulating panel (204); An aluminum foil protective layer (203) for moisture-proof and heat-insulating is provided on the side of the moisture-proof and heat-insulating decorative integrated panel (20) close to the phosphogypsum outer wall (1).

5. The thermal insulation decorative integrated phosphogypsum exterior wall structure according to claim 4, characterized in that: The flame retardant heat-insulating board (204) is a high-density polyurethane foam board that has been subjected to flame retardant treatment.

6. The thermal insulation decorative integrated phosphogypsum exterior wall structure according to claim 4, characterized in that: The surface of the metal plate (202) on the side of the moisture-proof and heat-insulating decorative integrated panel (20) away from the phosphogypsum exterior wall (1) is subjected to a profiling process to form a relief finish, and a coating film is provided on the relief finish.

7. The thermal insulation decorative integrated phosphogypsum exterior wall structure according to claim 1, characterized in that: The connection assembly comprises a plastic expansion tube and a galvanized screw. The plastic expansion tube is fixedly arranged in the phosphogypsum outer wall (1). One end of the galvanized screw passes through the moisture-proof and heat-insulating decorative layer (2) and is connected to the plastic expansion tube.

8. The thermal insulation decorative integrated phosphogypsum exterior wall structure according to claim 1, characterized in that: A phosphogypsum plaster layer (3) is provided on the inner wall surface of the phosphogypsum outer wall (1), and a decorative layer (4) is provided on the phosphogypsum plaster layer (3).

9. A construction method for the thermal insulation decorative integrated phosphogypsum exterior wall structure according to any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1: completing the construction of the phosphogypsum exterior wall (1); Step 2: Complete the construction of the moisture-proof and heat-insulating decorative layer (2). The construction of the moisture-proof and heat-insulating decorative layer (2) includes the following steps: Step 1, installation of the starting member (21): installing and fixing the starting member (21) to the phosphogypsum outer wall (1) and / or the concrete foundation through a plurality of connection components; Step 2, installing the bottom moisture-proof heat-insulating decorative integrated board (20): inserting one end of the bottom moisture-proof heat-insulating decorative integrated board (20) provided with the slot (205) into the starting piece (21), and connecting the lower part of the moisture-proof heat-insulating decorative integrated board (20) to the phosphogypsum outer wall (1) through a plurality of connecting components, and then connecting the connecting plate (200) on the moisture-proof heat-insulating decorative integrated board (20) to the phosphogypsum outer wall (1) through a plurality of connecting components; Step 3, installation of other layers of moisture-proof and heat-insulating decorative integrated panels (20): the card slot (205) at the lower end of the second layer of moisture-proof and heat-insulating decorative integrated panels (20) is clamped onto the card strip (201) at the upper end of the bottom layer of moisture-proof and heat-insulating decorative integrated panels (20), and the connecting plate (200) on the second layer of moisture-proof and heat-insulating decorative integrated panels (20) is connected to the phosphogypsum outer wall (1) through a plurality of connecting components, so that the installation of the second layer of moisture-proof and heat-insulating decorative integrated panels (20) is completed, and so on, the installation of the moisture-proof and heat-insulating decorative integrated panels (20) is completed layer by layer from bottom to top; Step 4, installation of the closing member (22): fixing the bottom plate of the closing member (22) to the phosphogypsum outer wall (1) through a plurality of connecting components, and making the upper end of the uppermost moisture-proof and heat-insulating decorative integrated board (20) be inserted into the closing member (22) to keep it fixed; Step 5, installation of lines at doors, windows and openings: Use structural adhesive to install the door and window package (23) and F parts (24), and make the door and window package (23) and F parts (24) buckle and install them on the corresponding moisture-proof and heat-insulating decorative integrated board (20); Step 6, gluing the installation seams: gluing the installation seams between the moisture-proof and heat-insulating decorative integrated panels (20), between the moisture-proof and heat-insulating decorative integrated panels (20) and the structural columns (10) of the phosphogypsum external wall (1), between the moisture-proof and heat-insulating decorative integrated panels (20) and the starting piece (21), the closing piece (22), the door and window package (23) or the F piece (24), between the starting piece (21) and the concrete foundation, between the closing piece (22) and the ring beam (11) of the phosphogypsum external wall (1), and between the door and window package (23) and the F piece (24) and the door frame and window frame; Step 3: constructing a phosphogypsum plaster layer (3) and a decorative layer (4) in sequence on the inner wall surface of the phosphogypsum outer wall (1).

10. The construction method of the thermal insulation decorative integrated phosphogypsum exterior wall structure according to claim 9, characterized in that: The construction of the phosphogypsum exterior wall (1) in step 1 comprises the following steps: Step A: Use cement bricks or concrete to build the lower waterproof and moisture-proof layer; Step B, building a phosphogypsum block wall (12) on the lower waterproof and moisture-proof layer, and reserving the casting positions of the structural columns (10) and the ring beam (11), and completing the installation of the tie bars or pull tabs during the construction of the phosphogypsum block wall (12), and performing a pull-out test on the tie bars or pull tabs; Step C, casting the structural column (10) and the ring beam (11), thereby obtaining the phosphogypsum outer wall (1); The spacing between the multiple connection components installed at the middle elevation in step 2 is not greater than 600 mm, the diameter of the plastic expansion tube in the connection component is not less than 8 mm, the diameter of the galvanized screw is not less than 5 mm, and the surface of the galvanized screw is coated with sealant before use; In the step 2, a center seam strip (25) is installed at the seam between two adjacent moisture-proof and heat-insulating decorative integrated panels (20) on the same layer; The method of sequentially constructing a phosphogypsum plaster layer (3) and a decorative layer (4) on the inner wall surface of the phosphogypsum outer wall (1) in step 3 comprises the following steps: Step a, applying a surface layer of plaster on the inner wall surface of the phosphogypsum outer wall (1), and pressing an alkali-resistant glass fiber mesh into the surface layer of plaster to form a phosphogypsum plaster layer (3), wherein the thickness of the phosphogypsum plaster layer (3) is 3 mm to 5 mm; Step b: applying latex paint on the phosphogypsum plaster layer (3), or pasting wallpaper on the phosphogypsum plaster layer (3) to form a decorative layer (4).

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