Aerogel felt / board interior wall thermal insulation construction process

Abstract

The invention discloses an aerogel felt / board interior wall thermal insulation construction process. The process comprises the following steps: base layer interface treatment: removing sundries on a wall surface, repairing holes and watering for maintenance; a vertical datum line is determined through a theodolite or a large plumb bob, and the control line is bounded according to the heat preservation thickness; the aerogel felt plates are fixed through a nylon anchor bolt drilling type anchoring method, three or more anchoring parts are arranged per square meter, anchor bolts are arranged according to a drawing, the aerogel felt plates are in butt joint and squeezed without gaps, and the edges of the aerogel felt plates are wrapped with U-shaped / L-shaped steel wire meshes. According to the aerogel felt (plate) interior wall external thermal insulation system, aerogel felt (plate) serves as a main thermal insulation material, anchoring parts such as plastic expansion bolts are matched with a hot-dip galvanized steel wire mesh to fix the aerogel felt (plate), a gasket is additionally arranged between the hot-dip galvanized steel wire mesh and the surface of the aerogel felt (plate), and a certain distance exists between the hot-dip galvanized steel wire mesh and the aerogel felt (plate); and plastering treatment on the surface of the aerogel felt (plate) is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of aerogel construction, and in particular to an aerogel felt / board interior wall thermal insulation construction process. Background Art

[0002] The aerogel felt (board) insulation system has good thermal insulation performance, fire resistance, durability and waterproof performance. At the same time, the aerogel felt (board) and the base wall adopt effective fixing measures, and the wind load resistance performance is excellent. The aerogel felt (board) anchoring technology has fast construction speed and simple process, which can shorten the construction period, reduce the labor cost and labor intensity of the project, and reduce the construction cost. It is green, environmentally friendly, safe and comfortable, and is an external wall insulation technology worthy of promotion.

[0003] The existing exterior wall insulation technology has the following problems:

[0004] Traditional material defects: organic insulation materials are flammable and have poor durability; inorganic materials have poor construction properties and are prone to cracking and hollowing. External wall insulation technology will change the facade shape and is not applicable to projects with restrictions on the facade, such as cultural relics protection buildings.

[0005] Bottlenecks in aerogel applications: Aerogel materials are lightweight and have low thermal conductivity, but direct pasting can easily cause them to fall off due to uneven base layers and weak adhesion. Node processing is complex and construction techniques are difficult to standardize.

[0006] Difficulties in construction management: Problems such as irregular base treatment, insufficient density of anchors, and loose overlap of wire mesh can easily lead to systemic defects and affect the long-term performance of the insulation layer.

[0007] Therefore, it is urgent to design an aerogel felt / board interior wall insulation construction process to solve the above problems. Summary of the invention

[0008] The purpose of the present invention is to provide an aerogel felt / board interior wall insulation construction process to solve the above-mentioned deficiencies in the prior art.

[0009] In order to achieve the above object, the present invention provides the following technical solutions:

[0010] An aerogel felt / board interior wall insulation construction process comprises the following steps:

[0011] 1. Base interface treatment: remove debris from the wall, repair holes and water for maintenance;

[0012] 2. Hang vertically and draw control lines: Use a theodolite or a large plumb line to determine the vertical reference line, and draw control lines according to the insulation thickness;

[0013] 3. Installation of aerogel felt board: Use nylon anchor bolt drilling anchoring method to fix, set ≥3 anchors per square meter, arrange the anchor bolts according to the drawings, butt and squeeze the aerogel felt board tightly without gaps, and wrap the edges with U-shaped / L-shaped steel wire mesh;

[0014] 4. Wire mesh fixing: single-hole overlap low-carbon steel wire binding or anchor bolt fixing, overlap spacing ≤ 150mm, overlap spacing of opposite sides ≤ 600mm;

[0015] 5. Interface layer construction: spray interface mortar and set plum blossom-shaped plastic spacers, 4 per square meter;

[0016] 6. Leveling layer construction: The spacing between ash cakes is 1.5m, the thickness of the ribs is consistent, and the plastering flatness of the thermal insulation slurry is ±4mm;

[0017] 7. Anti-cracking layer construction: alkali-resistant mesh overlap ≥50mm, overlap width of corners>50mm / 200mm, double-layer mesh and metal corner guard at the bottom of the first layer;

[0018] 8. Surface treatment: Apply elastic primer, scrape flexible water-resistant putty, and divide the surface into grids to avoid joints.

[0019] Preferably, in the step 3, the nylon anchor drilling type anchoring method uses a nylon sleeve with a disc for pre-embedding, and at least two anchors are provided for each aerogel felt board, and the anchors are arranged and installed according to the spacing designed in the drawing.

[0020] 9. Deep treatment: repair potholes, gradually polish the surface, improve the fineness of putty, and make the surface

[0021] The final finishing work of the surface ensures that there are no scratches or unevenness on the surface;

[0022] 10. Primer and paint: Apply elastic primer to increase the bonding strength between putty and base material and the adhesion between topcoat and base material, enhance the durability of the project, ensure that each partition area is evenly painted, and apply paint multiple times as needed to prevent stratification and cracking.

[0023] Preferably, when the U-shaped / L-shaped steel mesh is hemmed in step 3, the bending angle of the steel mesh is ≥90°, screws are hammered into the nylon sleeve to fix it, and the protruding parts are flattened with staples.

[0024] Preferably, during the construction of the leveling layer, the ash cakes are pasted with glue powder polystyrene particle slurry or waste polystyrene boards, the vertical spacing of the ash cakes is 1.5m, and the horizontal control line pulling error is ≤1mm.

[0025] Preferably, during the construction of the anti-cracking layer, the butt joint spacing of the first layer of mesh cloth is ≥200mm, metal corner guards are arranged between the double layers of mesh cloth at the external corners, the height of the corner guards is 2m, and the anti-cracking mortar is tightly wrapped.

[0026] Preferably, when scraping the flexible water-resistant putty, a five-pass scraping process is adopted, and each pass is polished in a semi-dry state, and the final flatness error is ≤2mm.

[0027] Preferably, in the surface treatment, dividing paper is used to replace the dividing seams for dividing the grids, and the primer is applied twice and then completely dried before the topcoat is applied to avoid the rigid material covering the anti-cracking layer.

[0028] Preferably, the construction environment requirements are: temperature > 5°C, wind force < level 4, construction is prohibited on rainy days, and the length of the steel bar heads and protrusions removed from the concrete beams / walls is ≥ 10 mm.

[0029] Preferably, the mixing station is built in a leeward place close to vertical transport machinery, the warehouse is waterproof and moisture-proof, and the materials are stacked ≥15 cm above the ground.

[0030] In the above technical scheme, the invention provides an aerogel felt / board interior wall insulation construction process, which adopts an aerogel felt (board) interior wall exterior insulation system with aerogel felt (board) as the main insulation material, and uses plastic expansion bolts and other anchors in conjunction with hot-dip galvanized steel wire mesh to fix the aerogel felt (board), and a gasket is added between the hot-dip galvanized steel wire mesh and the surface of the aerogel felt (board), so that there is a certain distance between the hot-dip galvanized steel wire mesh and the aerogel felt (board), which is conducive to the plastering treatment of the surface of the aerogel felt (board); after the aerogel felt (board) is fixed, the surface of the aerogel felt (board) is subjected to interface treatment (rock wool board interface agent can be used), which enhances the waterproofness and surface strength of the aerogel (board), and effectively solves the bonding problem of the aerogel felt (board) and the leveling layer of the glue powder polystyrene particles. The surface layer is leveled with glue powder polystyrene particle insulation slurry, which overcomes the problem that the surface load of the aerogel felt (board) should not be too large, and at the same time makes it have the characteristics of light weight, flame retardant, fireproof, crack-proof, and cost reduction. The anti-crack protective layer is made of anti-crack mortar composite plastic-coated alkali-resistant glass fiber mesh cloth to form an anti-crack protective layer, which has good anti-crack performance;

[0031] (1) Anchor system innovation: pre-embedded nylon sleeve + quantitative arrangement of anchor bolts (≥3 / m2) to solve the adhesion problem caused by the light weight of aerogel materials;

[0032] (2) Node processing optimization: U / L-shaped wire mesh edging + nail flattening technology to ensure the sealing of corners, door and window openings, etc.

[0033] (3) Interface enhancement measures: plum blossom-shaped plastic gasket + interface mortar spraying combined process to improve the bonding strength of the base layer;

[0034] (4) Anti-crack system structure: double-layer mesh cloth + metal corner protection design to meet the first layer of external insulation and impact resistance requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0036] Figure 1 A schematic diagram of the steps provided for an embodiment of an aerogel felt / board interior wall insulation construction process of the present invention. DETAILED DESCRIPTION

[0037] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0038] like Figure 1 As shown, an aerogel felt / board interior wall insulation construction process provided by an embodiment of the present invention comprises the following steps:

[0039] 1. Base interface treatment: remove debris from the wall, repair holes and water for maintenance;

[0040] 2. Hang vertically and draw control lines: Use a theodolite or a large plumb line to determine the vertical reference line, and draw control lines according to the insulation thickness;

[0041] 3. Installation of aerogel felt board: Use nylon anchor bolt drilling anchoring method to fix, set ≥3 anchors per square meter, arrange the anchor bolts according to the drawings, butt and squeeze the aerogel felt board tightly without gaps, and wrap the edges with U-shaped / L-shaped steel wire mesh;

[0042] 4. Wire mesh fixing: single-hole overlap low-carbon steel wire binding or anchor bolt fixing, overlap spacing ≤ 150mm, overlap spacing of opposite sides ≤ 600mm;

[0043] 5. Interface layer construction: spray interface mortar and set plum blossom-shaped plastic spacers, 4 per square meter;

[0044] 6. Leveling layer construction: The spacing between ash cakes is 1.5m, the thickness of the ribs is consistent, and the plastering flatness of the thermal insulation slurry is ±4mm;

[0045] 7. Anti-cracking layer construction: alkali-resistant mesh overlap ≥50mm, overlap width of corners>50mm / 200mm, double-layer mesh and metal corner guard at the bottom of the first layer;

[0046] 8. Surface treatment: Apply elastic primer, scrape flexible water-resistant putty, and divide the surface into grids to avoid joints.

[0047] Preferably, in the step 3, the nylon anchor drilling type anchoring method uses a nylon sleeve with a disc for pre-embedding, and at least two anchors are provided for each aerogel felt board, and the anchors are arranged and installed according to the spacing designed in the drawing.

[0048] Among them, when the U-shaped / L-shaped steel wire mesh is hemmed in step 3, the bending angle of the steel wire mesh is ≥90°, the screws are hammered into the nylon sleeve to fix it, and the protruding parts are flattened with staples; in the construction of the leveling layer in step 6, the ash cakes are pasted with glue powder polystyrene particle slurry or waste polystyrene board, the vertical spacing of the ash cakes is 1.5m, and the horizontal control line pulling error is ≤1mm; in the construction of the anti-cracking layer in step 7, the first layer of the mesh cloth is connected at a spacing of ≥200mm, and a metal corner guard is set between the double layers of mesh cloth at the positive corner. The height of the corner guard is 2m, and the anti-cracking mortar is tightly wrapped; the scraping flexibility When applying water-resistant putty, a five-pass scraping process is adopted, and each pass is polished in a semi-dry state, and the final flatness error is ≤2mm; in the surface treatment, dividing paper is used instead of dividing seams for division, and the primer is applied twice and then completely dried before the topcoat is applied to avoid the rigid material covering the anti-cracking layer; the construction environment requirements are: temperature>5℃, wind force<4 levels, construction is prohibited on rainy days, and the length of the concrete beam / wall steel bar heads and protrusions removed is ≥10mm; the mixing station is built in the leeward place close to the vertical transportation machinery, the warehouse is waterproof and moisture-proof, and the materials are stacked ≥15cm above the ground.

[0049] Specifically, in this embodiment,

[0050] 1. Base layer interface processing

[0051] The wall surface should be cleaned, oil stains should be removed, dust should be swept, etc. Loose and weathered parts of the wall should be removed.

[0052] Protrusions on the wall surface larger than 10mm should be removed.

[0053] When blocking scaffolding holes and abandoned holes, the debris, dust and other materials in the holes should be cleaned up, moistened with water, and then filled and sealed with 1:3 cement mortar.

[0054] 2. Hang vertically and stretch the control line

[0055] Determine the method of setting out the lines according to the building height. For high-rise and super high-rise buildings, you can use the corners of the wall and both sides of the doors and windows to draw straight lines with a theodolite to find verticality. For multi-story buildings or medium- and high-rise buildings, you can use a large plumb line to hang vertically from the top floor, and stretch a low-carbon steel wire to find the rules. The horizontal line can be based on the floor elevation or use a 32-+0.000 upward 500mm line as the horizontal reference line for intersection control. According to the vertical adjustment line and the thickness of the insulation, the control line is drawn on both sides of the corners of each step frame, and then the horizontal line is pulled as a marker block.

[0056] 3. Installation of aerogel felt board

[0057] 1. Determine the positioning line of the aerogel felt board, lay the aerogel felt board, drill holes in the anchor bolt installation position according to the construction drawing, knock in the nylon sleeve with a disc, and press the aerogel felt board. At least 3 anchors should be set per square meter on the wall, and at least 2 anchors should be set on each aerogel felt board. The anchors should be arranged according to the drawings.

[0058] 2. At least 3 anchors should be installed on each side around the window.

[0059] 3. Bend the pre-cut wire mesh into "U" and "L" shapes. While laying the aerogel felt board, use the "U"-shaped mesh to wrap the bottom of the wall, and use the "L"-shaped mesh to wrap the side walls of doors and windows and the corners of the wall. Knock the screws into the nylon sleeve to fix the wire mesh.

[0060] 4. Use right-angle edge strips to bend the steel wire mesh for reinforcement.

[0061] 5. The aerogel felt panels must be butt-jointed and squeezed tightly together without any gaps. The width of the narrow strips of aerogel felt panels used for inlay shall not be less than 150 mm, and at least one anchor shall pass through to make the aerogel felt panels close to the wall.

[0062] 6. After the aerogel felt board is laid, the wire mesh is laid from bottom to top. When the single hole of the wire mesh is overlapped, it is tied with low-carbon steel wire or fixed with anchor bolts. When tied, there are no less than 4 places per meter. When overlapping the opposite sides, it is connected with low-carbon steel wire, and the interval is not more than 150mm. When fixed with anchor bolts, the interval is not more than 600mm.

[0063] 7. Repair all seams and flatten the protruding parts of the wire mesh with staples.

[0064] 8. After the insulation layer is installed and passed the inspection, the interface layer can be constructed.

[0065] 5. Construction of interface layer

[0066] 1. Place the plastic spacer under the wire mesh and raise the wire mesh by 5mm. Set 4 plastic spacers per square meter and arrange them in a plum blossom shape.

[0067] 2. Use a special spray gun to evenly spray the prepared interface mortar onto the surface of the aerogel felt board and the wire mesh.

[0068] 6. Leveling layer construction

[0069] 1. Make ash cakes and punch ribs. At about 100mm from the top of the floor and about 100mm from the bottom of the floor, and at about 100mm from the yin or yang corner of the large wall, make vertical ash cakes according to the vertical control line. When the floor is high, two people should work together to complete it as the reference ash cake. Then, according to the line between the two vertical reference ash cakes, make the wall leveling layer thickness ash cakes. The distance between each ash cake is about 1.5m. The ash cake can be made of glue powder polystyrene particle slurry, or it can be cut into 50mmX50mm small pieces of waste polystyrene board and pasted. After the vertical ash cake is fixed, pull the horizontal control line between the two horizontal ash cakes. The specific method is to insert the small round nail with a small line into the ash cake, straighten the small line, so that the small line control is slightly higher than the ash cake by 1mm, and paste several ash cakes or punch ribs horizontally at intervals of about 1.5m between the two ash cakes. After each layer of ash cake is pasted, use a 5m small wire to check the consistency of the ash cake in the horizontal direction, use a 2m wire support board to check the verticality in the vertical direction, and measure the thickness of the ash cake. The thickness of the ribs should be consistent with the thickness of the ash cake. Use a 5m small wire to check the consistency of the rib thickness and record it.

[0070] 2. Apply glue powder and polystyrene granules to level the thermal insulation slurry

[0071] 1 When applying the glue powder polystyrene particle insulation slurry, the flatness deviation should not be greater than ±4mm, and the plastering thickness should be slightly higher than the thickness of the ash cake.

[0072] 2. Apply the thermal insulation slurry from top to bottom and from left to right. After applying the entire wall, rub it back and forth on the wall with a ruler to remove high spots and fill low spots. Finally, press it again with an iron trowel to make the surface smooth and uniform in thickness.

[0073] 3. Smooth the concave parts of the insulation surface with thin slurry, and use a trowel to scrape the convex parts flat. 30 minutes after the insulation surface is applied, use a trowel to smooth the wall, first horizontally and then vertically, and then use a ruler to check whether it meets the acceptance standard.

[0074] 4 During the construction of thermal insulation slurry, pay attention to cleaning the dust on the ground. The dust on the ground should be removed in time in small amounts and re-stirred several times.

[0075] 3. The leveling of the Yin and Yang corners should be carried out according to the following steps

[0076] 1 Use a wooden square to check the vertical angle of the base wall corner, and use a plumb line to check the verticality of the corner.

[0077] 2. After the thermal insulation slurry is plastered, a wooden square should be used to press the slurry layer at the corner and rub it up and down to make the thermal insulation slurry base at the corner

[0078] The surface is vertical and then smoothed with a corner trowel.

[0079] 3. When plastering the insulation slurry at large angles, use a square ruler and a trowel to repeatedly measure and press the repair operation to ensure the verticality is ±2mm.

[0080] Right angle ±2mm.

[0081] 4 The connection between the door and window frames and the wall should reserve enough thickness for the insulation layer, and the surface of the door and window frames should be well protected.

[0082] 5. After the installation of the window auxiliary frame is accepted, the thermal insulation plastering of the window area can be carried out. When constructing the door and window openings, the side openings of the door and window should be plastered first, and then the window sills and window tops should be plastered on the large wall. Before construction, a single-sided eight-shaped ruler should be cut according to the size of the door and window openings, and the openings should be constructed with a ruler to ensure that the door and window openings are square and consistent with the internal and external dimensions.

[0083] 7. Construction of anti-cracking layer

[0084] After the construction of the leveling layer is completed for 3 to 7 days and the quality of the insulation layer is accepted, the anti-cracking layer can be constructed. The length of the alkali-resistant mesh cloth should not exceed 3m, the size should be cut in advance, and the mesh cloth hemming should be cut off. When applying the anti-cracking mortar, the thickness should be controlled at 3 to 5mm. After applying the anti-cracking mortar with a width and length equivalent to the mesh cloth, the alkali-resistant mesh cloth should be immediately pressed with an iron trowel in the order from left to right and from top to bottom. At the window opening and other places, a mesh cloth of 400mmx300mm should be added in advance along the 45. direction. The overlap width of the alkali-resistant mesh cloth should not be less than 50mm, and dry overlap is strictly prohibited. The alkali-resistant mesh cloth at the inner corner should be overlapped with a stubble, and its width should be >50mm; the outer corner should also be overlapped with a stubble, and its width should be >200mm. The alkali-resistant mesh cloth should be laid flat and wrinkle-free, and the mortar fullness should reach 100%. At the same time, it should be smoothed and straightened to maintain the squareness and verticality of the inner and outer corners. The lower part of the first floor wall should be paved with a double layer of alkali-resistant mesh cloth. The first layer of mesh cloth should be paved with a butt joint method between mesh cloths. It is strictly forbidden to butt the mesh cloth at the corners. The butt joint part should be no less than 200mm from the corners. Then the second layer of mesh cloth should be paved. The paving method is as described above. The anti-cracking mortar between the two layers of mesh cloth should be full. Dry paving is strictly prohibited. The external insulation of the lower part of the first floor of the building should be equipped with a special metal corner guard between the double layers of mesh cloth at the corners. The height of the corner guard is generally 2m. After the first layer of mesh cloth is paved, the metal corner guard should be placed, and the anti-cracking mortar should be pressed out of the corner guard hole with a trowel. The second layer of anti-cracking mortar should be applied to wrap the corner guard. Ensure that the corner guard is firmly installed. After the anti-cracking mortar is applied, it is strictly forbidden to apply ordinary cement mortar waistline, mouth sleeve line, etc. on this surface layer, and it is strictly forbidden to scrape and apply non-flexible materials such as rigid putty.

[0085] 8. Surface treatment

[0086] 2 hours after the anti-cracking layer is constructed, the elastic primer can be applied. The application should be even and there should be no bottom phenomenon.

[0087] 9. Scrape flexible water-resistant putty

[0088] For large wall surface puttying, it is advisable to use a 400-600mm long scraper, and for smaller areas such as door and window corners, it is advisable to use a 200mm long scraper. The first pass is to repair the potholes and the second pass is to scrape the surface fully. When the third pass of water-resistant putty is half-dry, the large surface is beaten with a long wooden square board tied to a 400-600mm-long sandstone board tied to zero sandpaper, and the door and window corners are polished with a short sandstone board tied to zero sandpaper. The fourth pass requires full scraping. When the fifth pass of water-resistant putty is half-dry, the large surface is beaten with a long wooden square board tied to a 400-600mm long sandstone board, and then polished with zero sandpaper, and the door and window corners are polished with a short sandstone board tied to zero sandpaper. If the flatness does not meet the requirements, add another pass of puttying and polishing until the flatness requirements are met.

[0089] 10. Apply primer and topcoat

[0090] Use a high-quality short-hair roller as the painting tool. Make sure to divide the wall before applying the primer, and use dividing paper to divide the wall instead of the dividing seams. Each time you apply the primer, you should fill one grid to avoid obvious joints on the primer. Apply the primer evenly one or two times and let it dry completely for 12 hours. After the primer is completely dry, use a modeling roller to apply the topcoat evenly so that it adheres closely to the wall, the material is even, and it is done once according to the brushing direction and requirements.

[0091] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An aerogel felt / board interior wall insulation construction process, characterized in that: The following steps are involved: (1) Base interface treatment: remove debris from the wall, repair holes and water for maintenance; (2) Hang vertically and draw control lines: Use a theodolite or a large plumb line to determine the vertical reference line, and draw control lines according to the insulation thickness; (3) Installation of aerogel felt / board: Use nylon anchor bolt drilling anchoring method to fix, set ≥ 3 anchor bolts per square meter, arrange the anchor bolts according to the drawings, butt-joint and squeeze the aerogel felt / board to form no gaps, and wrap the edges with U-shaped / L-shaped steel wire mesh; (4) Wire mesh fixing: single-hole overlap low-carbon steel wire binding or anchor bolt fixing, overlap spacing ≤ 150mm, overlap spacing on opposite sides ≤ 600mm; (5) Interface layer construction: spray interface mortar and set plum blossom-shaped plastic spacers, 4 per square meter; (6) Leveling layer construction: The spacing between ash cakes is 1.5m, the thickness of the ribs is consistent, and the plastering flatness of the thermal insulation slurry is ±4mm; (7) Anti-cracking layer construction: alkali-resistant mesh overlap ≥50mm, overlap width of corners>50mm / 200mm, double-layer mesh and metal corner guard at the bottom of the first layer; (8) Surface treatment: Apply elastic primer, scrape flexible water-resistant putty, and perform grid treatment to avoid joint marks; (9) Deep treatment: repair potholes, gradually polish the surface, improve the fineness of the putty, and do the final finishing work on the surface to ensure that there are no scratches or unevenness on the surface; (10) Primer and paint: Apply elastic primer to increase the bonding strength between putty and base material and the adhesion between topcoat and base material, enhance the durability of the project, ensure that each partition area is evenly painted, and apply paint multiple times as needed to prevent stratification and cracking.

2. The aerogel felt / board interior wall insulation construction process according to claim 1, characterized in that: In step (3), the nylon anchor bolt drilling type anchoring method uses a nylon sleeve with a disc for pre-embedding, and at least two anchors are set for each aerogel felt / board. The anchor bolts are arranged and installed according to the spacing designed in the drawing.

3. The aerogel felt / board interior wall insulation construction process according to claim 1, characterized in that: When the U-shaped / L-shaped wire mesh is hemmed in step (3), the bending angle of the wire mesh is ≥90°, screws are hammered into the nylon sleeve to fix it, and the protruding parts are flattened with staples.

4. The aerogel felt / board interior wall insulation construction process according to claim 1, characterized in that: In step (6), during the construction of the leveling layer, the ash cakes are pasted with glue powder polystyrene particle slurry or waste polystyrene boards, the vertical spacing of the ash cakes is 1.5m, and the horizontal control line pulling error is ≤1mm.

5. The aerogel felt / board interior wall insulation construction process according to claim 1, characterized in that: During the construction of the anti-cracking layer in step (7), the butt joint spacing of the first layer of mesh cloth is ≥200mm, metal corner guards are set between the double layers of mesh cloth at the external corners, the height of the corner guards is 2m, and the anti-cracking mortar is tightly wrapped.

6. The aerogel felt / board interior wall insulation construction process according to claim 1, characterized in that: When scraping the flexible water-resistant putty in step (9), a five-pass scraping process is adopted, and each pass is polished in a semi-dry state, and the final flatness error is ≤2mm.

7. The aerogel felt / board interior wall insulation construction process according to claim 1, characterized in that: In the surface treatment of step (10), dividing paper is used to replace the dividing seams for dividing the grids, and the primer is applied twice and then completely dried before applying the topcoat to prevent the rigid material from covering the anti-cracking layer.

8. The aerogel felt / board interior wall insulation construction process according to claim 1, characterized in that: Construction environment requirements: temperature > 5°C, wind force < level 4, construction prohibited on rainy days, and the length of the steel bar heads and protrusions removed from concrete beams / walls must be ≥ 10mm.

9. The aerogel felt / board interior wall insulation construction process according to claim 1, characterized in that: The mixing station is built in a leeward place close to the vertical transport machinery. The warehouse is waterproof and moisture-proof and the materials are stacked ≥15cm above the ground.

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