Fabricated composite thermal insulation external wall panel system and construction method

Abstract

The invention provides an assembly type composite thermal insulation external wall panel system, and relates to the technical field of assembly type buildings, the assembly type composite thermal insulation external wall panel system comprises a steel bar truss, and lightweight aggregate concrete is poured on the steel bar truss; the heat preservation layer is arranged on one side of the steel bar truss; the thermal insulation slurry serves as a leveling layer to surround or wrap the thermal insulation layer, so that the thermal insulation slurry is combined with the thermal insulation layer and the steel bar truss to form a composite external wall panel; the waterproof layer is arranged on the outer side of the composite external wall panel; the composite glass fiber net or the galvanized welded wire mesh is used as a reinforcing material to form a plastering layer together with the anti-crack mortar, and the plastering layer is adhered to the outer side of the waterproof layer. The device is simple in structure, convenient to construct and light in overall structure, and has the advantages of heat preservation, heat insulation, water prevention, fire prevention and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of prefabricated buildings, and in particular to a prefabricated composite thermal insulation exterior wall panel system and a construction method. Background Art

[0002] Prefabricated buildings offer advantages such as fast construction, low labor requirements, minimal wet work, high construction quality, and low dust generation. Unlike traditional cast-in-place buildings, prefabricated buildings are constructed from prefabricated components. Commonly used prefabricated components include exterior wall panels. Multiple panels are spliced together to form the exterior walls of prefabricated buildings, effectively eliminating fire hazards and providing greater safety and reliability.

[0003] Patent publication number CN 117403804 A discloses a novel prefabricated exterior wall panel and its assembly method. The panel comprises a lightweight steel keel, artificial stone panels, connectors, flexible caulking material, rock wool insulation, double-layer gypsum inner panels, and a steel structure. The lightweight steel keel can be easily connected to the main steel structure components and, in conjunction with the artificial stone panels and double-layer gypsum panels, forms a stable spatial structure capable of withstanding wind loads and impact loads outside the wall plane, providing strong support for the exterior wall system.

[0004] However, the device still has the following problems: its overall structure is complex, and it uses stone slabs, which makes the overall structure bulky and has low installation efficiency. At the same time, its thermal insulation performance is poor. When constructing exterior wall panels, it needs to be used in conjunction with a waterproof structure, which has great limitations in usage scenarios. Summary of the Invention

[0005] In order to solve the above problems in the prior art, an assembled composite thermal insulation exterior wall panel system and a construction method are provided.

[0006] The technical solution adopted by the present invention to solve its technical problem is: The present invention proposes an assembled composite thermal insulation exterior wall panel system, comprising: a steel truss cast with lightweight concrete; A thermal insulation layer, the thermal insulation layer being arranged on one side of the steel truss; Insulation slurry, the insulation slurry acting as a leveling layer surrounding or enveloping the insulation layer, thereby forming a composite exterior wall panel in combination with the insulation layer and the steel trusses; A waterproof layer, the waterproof layer being arranged on the outside of the composite exterior wall panel; A composite glass fiber mesh is used as a reinforcing material and together with the anti-cracking mortar forms a finishing layer bonded to the outside of the waterproof layer.

[0007] Preferably, the insulation layer is a composite insulation board, one end of the composite insulation board is bonded to the steel truss, and the other end of the composite insulation board is poured with insulation slurry; A steel truss is used as a base material and is provided with a plurality of composite insulation boards. Adjacent composite insulation boards are bonded to each other. Grooves are opened on both sides of the composite insulation boards. The insulation slurry is poured into the grooves to form fireproof barrier reinforcement ribs.

[0008] Preferably, it also includes an anchor, which passes through the thermal insulation slurry and the composite thermal insulation board in sequence and then penetrates into the steel truss.

[0009] Preferably, the insulation layer is a composite insulation board, the composite insulation board and the steel truss are filled with insulation slurry, and the insulation slurry wraps the composite insulation board. A steel bar truss is used as a base material and is provided with a plurality of composite insulation boards. Gaps are provided between adjacent composite insulation boards and are filled with insulation slurry.

[0010] Preferably, it further comprises an anchor, which penetrates through the thermal insulation slurry and then extends into the steel truss, and the anchor penetrates through the gap between adjacent composite thermal insulation boards.

[0011] Preferably, one end of the steel truss away from the insulation layer is recessed inward to form an embedded groove, and embedded parts are provided in the embedded groove. The embedded parts bolt the steel truss and the insulation layer, and also include connecting parts that pass through the insulation layer and are cast together with the steel truss.

[0012] Preferably, the composite insulation board includes a formwork body cast from lightweight microporous concrete, two layers of steel mesh are arranged in parallel in the formwork body, and embedded pipes are respectively embedded at the upper and lower ends of the formwork body, and threaded holes are opened in the embedded pipes.

[0013] Preferably, a connecting frame is further included, wherein both ends of the connecting frame are respectively welded and fixed to the steel mesh on both sides, and the connecting frame is also fixedly connected to the outer wall of the embedded pipe.

[0014] A construction method for an assembled composite thermal insulation exterior wall panel system, using the above-mentioned assembled composite thermal insulation exterior wall panel system, comprises the following steps: S1: Based on the pre-measured baseline, install the composite exterior wall panels, and use the insulation layer to treat thermal bridges based on the installed composite exterior wall panels; S2: Carry out pipeline construction and perform joint treatment between composite exterior wall panels and between composite exterior wall panels and main structure; S3: Apply thermal insulation slurry as leveling layer and waterproof layer; S4: The composite glass fiber mesh is used as a reinforcing material and together with the anti-cracking mortar, it forms the finishing layer and is bonded to the outside of the waterproof layer.

[0015] Preferably, in S4, first apply the first layer of anti-cracking mortar, wait for a specified time, then thinly apply the second layer of anti-cracking mortar on its surface, press the fiberglass mesh into the second layer of anti-cracking mortar, wait for a specified time, and then thinly apply the third layer of anti-cracking mortar on its surface to expose the hidden grid of the fiberglass mesh after the surface layer solidifies; the first-floor wall is paved with a double layer of fiberglass mesh, the inner layer of fiberglass mesh is connected, the anti-cracking mortar is wrapped around the fiberglass mesh, and the anti-cracking mortar is filled between the two layers of fiberglass mesh.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, lightweight concrete is cast into a steel truss, which integrates the advantages of light weight, fire resistance, heat insulation, environmental protection, and durability. Lightweight concrete is wrapped around the outside of the steel truss, which can effectively improve the fire resistance and seismic resistance of the structure. It has light weight and high strength, significantly improved crack resistance, better thermal insulation and sound insulation effects, can realize automated production, and is more economical.

[0017] 2. The present invention is provided with an insulation layer, which is in the form of a composite insulation board or a composite insulation board, which has a simple structure and is easy to construct. The overall structure is lightweight, and the composite insulation board is concave inward to form a groove, and the insulation slurry is poured in the groove to form a fire-proof barrier reinforcement rib, which is matched with a waterproof layer arranged on the outside, and has the advantages of insulation, heat insulation, waterproofing, and fire prevention.

[0018] 3. The present invention uses the thermal insulation slurry as the leveling layer. The thermal insulation slurry can be directly applied on the thermal insulation layer. The thickness can be adjusted to meet the requirements of wall leveling. The construction is convenient and can effectively solve the problem of insufficient flatness of the base layer. The composite glass fiber mesh is used as a reinforcing material and can form a finishing layer together with the anti-cracking mortar. The overall anti-cracking performance is strong, the fireproof performance is good, and the durability is high, which can effectively improve the overall performance of the thermal insulation system.

[0019] 4. The present invention is provided with a composite insulation board. During processing, a pre-buried pipe with a threaded hole is embedded in the template body. During subsequent installation, the threaded rod of the fixing piece is screwed into the pre-buried pipe to achieve the connection between the upper and lower composite insulation boards. The fixing piece can also be connected to the steel truss. The node process is simple, and the auxiliary work and accessories and materials in the early stage of installation are less, which simplifies the construction steps and greatly improves the installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which: Figure 1 It is an overall stereogram of the present invention; Figure 2 yes Figure 1 Sectional view of the structure of the AA part; Figure 3 yes Figure 1 Cross-sectional view of the structure of the middle BB part; Figure 4 The present invention is a sectional view of the whole Figure 1 ; Figure 5 The present invention is a sectional view of the whole Figure 2 ; Figure 6 The present invention is a sectional view of the whole Figure 3 ; Figure 7 The present invention is a sectional view of the whole Figure 4 ; Figure 8 This is a three-dimensional diagram of the composite insulation board structure of the present invention; Figure 9 This is a top view of the composite insulation board structure of the present invention; Figure 10 It is a cross-sectional view of the composite thermal insulation board structure of the present invention.

[0021] Description of the accompanying drawings: 1. Steel truss; 2. Composite insulation board; 3. Insulation slurry; 4. Waterproof layer; 5. Composite fiberglass mesh; 6. Decorative layer; 7. Embedded parts; 8. Composite insulation board; 9. Reinforcement ribs; 10. Grooves; 11. Embedded grooves; 12. Anchors; 13. Connectors; 14. Formwork body; 15. Threaded holes; 16. Steel wire mesh; 17. Connecting frame. DETAILED DESCRIPTION

[0022] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0023] like Figures 1-10 As shown, this embodiment proposes an assembled composite thermal insulation exterior wall panel system, including: The steel truss 1 uses the upper and lower chord steel bars that bear longitudinal force as the upper and lower chord members, and the straight-inserted web bars and the oblique-inserted web bars as the web members. At the same time, it is matched with reinforcing ribs 9, which are arranged in a wavy line. The two ends of the reinforcing ribs 9 are welded to the steel bars on both sides. The overall structure is formed by resistance spot welding to form a fully combined force-bearing steel skeleton.

[0024] The steel truss 1 is poured with lightweight concrete. The lightweight concrete is prepared with light coarse aggregate, light sand or ordinary sand, cementitious materials, admixtures and water. The dry apparent density is not more than 1250 kg / m³. Compared with ordinary concrete, the self-weight of lightweight concrete is significantly reduced, which not only reduces the overall weight of the building, but also reduces the bearing pressure of the foundation and reduces the cost of the foundation project.

[0025] The lightweight concrete cast in steel trusses 1 can be prefabricated in a factory and then transported to the construction site for assembly and pouring. This prefabricated construction method significantly reduces on-site wet work and shortens the construction period. Lightweight concrete contains numerous pores, providing excellent thermal insulation. This material can effectively reduce building energy consumption, lowering winter heating and summer cooling costs.

[0026] When the steel truss is combined with lightweight concrete, an integral insulation structure is formed with more uniform insulation performance, avoiding the problems of insulation layer falling off or poor local insulation effect that may occur with traditional insulation materials. Lightweight concrete has a certain toughness and can absorb and dissipate energy under the action of earthquakes, reducing seismic damage to the structure. Lightweight concrete has good fire resistance and can maintain structural stability in fire, extending the fire resistance time of the building.

[0027] The steel truss 1 is cast with lightweight concrete, which integrates the advantages of light weight, fire resistance, heat insulation, environmental protection and durability. The lightweight concrete is wrapped around the outside of the steel truss, which can effectively improve the fire resistance and seismic performance of the structure. It has light weight and high strength, significantly improved crack resistance, better thermal insulation and sound insulation effects, can realize automated production, and is more economical.

[0028] Insulation layer, the insulation layer is arranged on one side of the steel truss 1, the waterproof layer 4, and the insulation slurry 3 is arranged between the waterproof layer 4 and the insulation layer, the insulation slurry 3 is used as a leveling layer to surround or wrap the insulation layer, thereby forming a composite exterior wall panel with the insulation layer and the steel truss 1, and then the waterproof layer 4 is bonded to the outside of the insulation slurry 3; the composite glass fiber mesh 5, the composite glass fiber mesh 5 is bonded to the outside of the waterproof layer 4.

[0029] There are two ways to set up the insulation layer. When it is method 1, such as Figure 4-Figure 5 As shown, Figure 4 The present invention is a sectional view of the whole Figure 1 , Figure 5 The present invention is a sectional view of the whole Figure 2 .

[0030] The insulation layer is a composite insulation board 2, one end of which is bonded to the steel truss 1. The other end of the composite insulation board 2 is poured with insulation slurry 3. It also includes an anchor 12, which passes through the insulation slurry 3 and the composite insulation board 2 in sequence and then extends into the steel truss 1. The anchor 12 passes through the insulation slurry 3 and the composite insulation board 2 and is cast together with the lightweight aggregate concrete. The waterproof layer 4 is located outside the anchor 12, providing a good waterproof effect for the entire structure.

[0031] A steel truss 1 is used as a base material and is provided with a plurality of composite insulation boards 2. Adjacent composite insulation boards 2 are bonded to each other. Grooves 10 are opened on both sides of the composite insulation boards 2. Insulation slurry 3 is poured into the grooves 10 to form fire-proof barrier reinforcement ribs 2.

[0032] in Figure 4 As shown, the basic structure of the exterior wall panel is used as the first layer. In this structure, the thermal insulation slurry 3 is about 10 mm thick, the anti-cracking mortar is about 5 mm thick, and the anti-cracking mortar is compounded with two layers of glass fiber mesh. Figure 5 As shown, the basic structure of the exterior wall panel is a two-layer or above method. In this structure, the thermal insulation slurry 3 is about 10 mm thick, the anti-cracking mortar is about 5 mm thick, and the anti-cracking mortar is composited with a single layer of glass fiber mesh.

[0033] When it is the second method, such as Figure 6-Figure 7 As shown, Figure 6 The present invention is a sectional view of the whole Figure 3 , Figure 7 The present invention is a sectional view of the whole Figure 4 .

[0034] The insulation layer is a composite insulation board 2, which is prefabricated in a factory and consists of a graphite extruded polystyrene board insulation layer, an insulation transition layer, fire barrier reinforcement ribs, an outer reinforcement layer, etc. The composite insulation board 2 and the steel truss 1 are filled with insulation slurry 3, and the insulation slurry 3 covers the insulation board 8.

[0035] The composite insulation board 8 can also be replaced with a slurry composite vacuum insulation board. The slurry composite vacuum insulation board is manufactured in the factory. It uses the vacuum insulation board as the core material and is covered with insulation slurry on all six sides with composite steel wire mesh or glass fiber mesh on the upper and lower sides. It is a prefabricated insulation board made by molding, curing, and maintenance.

[0036] A steel truss 1 is provided with several coated insulation boards 8 as a base material. Gaps are provided between adjacent coated insulation boards 8 and filled with insulation slurry 3. A connector 12 is also included. The connector 12 penetrates the insulation slurry 3 and then extends into the steel truss 1. The connector 12 penetrates the gaps between adjacent coated insulation boards 8. The connector 12 passes through the insulation slurry 3 and is cast together with the lightweight aggregate concrete. The waterproof layer 4 is located on the outside of the connector 12, thereby achieving a good waterproof effect on the whole.

[0037] in Figure 6 As shown, the basic structure of the exterior wall panel is used as the first layer. In this structure, the thermal insulation slurry 3 is 5-10mm thick, the anti-cracking mortar is about 3mm thick, and the anti-cracking mortar is composited with glass fiber mesh. Figure 7 As shown, the basic structure of the exterior wall panel is a two-layer or above method. In this structure, the thermal insulation slurry 3 is about 5-10 mm thick, the anti-cracking mortar is about 5 mm thick, and the anti-cracking mortar is compounded with two layers of glass fiber mesh.

[0038] The insulation layer adopts the form of a composite insulation board 2 or a coated insulation board 8, which has a simple structure and is easy to construct. The overall structure is lightweight. At the same time, the composite insulation board 2 is concave inward to form a groove 10, and the insulation slurry 3 is poured in the groove 10 to form a fire-proof barrier reinforcement rib, which is matched with a waterproof layer 4 arranged on the outside. The waterproof layer 4 should preferably use a cement-based waterproof coating, which has the advantages of insulation, heat insulation, waterproofness, and fire prevention.

[0039] The composite glass fiber mesh 5 is used as a reinforcing material and together with the anti-cracking mortar forms a finishing layer bonded to the outside of the waterproof layer 4 . The composite glass fiber mesh 5 is provided with a decorative layer 6 , which is coated on the composite glass fiber mesh 5 as a finishing surface.

[0040] One end of the steel truss 1 away from the insulation layer is recessed inward to form an embedded groove 11. An embedded part 7 is provided in the embedded groove 11. The embedded part 7 is bolted to the steel truss 1 and the insulation layer. After the embedded part 7 is buried in the embedded groove 11, the end face of the embedded part 7 is lower than or flush with the outer side face of the steel truss 1. The embedded part 7 is an anti-corrosion treated metal part embedded in the main structure to serve as a connection.

[0041] The thermal insulation slurry 3 is used as a leveling layer. The thermal insulation slurry 3 can be directly applied on the thermal insulation layer. The thickness can be adjusted to meet the requirements of wall leveling. The construction is convenient and can effectively solve the problem of insufficient flatness of the base layer. The composite glass fiber mesh 5 is used as a reinforcing material and can be combined with the anti-cracking mortar to form a finishing layer. The overall anti-cracking performance is strong, the fire resistance is good, and the durability is high, which can effectively improve the overall performance of the thermal insulation system.

[0042] Thermal insulation slurry 3 is an insulation mortar composed of a rubber powder made of redispersible latex powder, inorganic gelling materials, admixtures, etc. and polystyrene particles as the main aggregate. It is divided into rubber powder polystyrene particle insulation slurry and glass bead insulation slurry. It is used for the outer protective layer of composite exterior wall panels and the structural layer of thermal bridge parts to play a leveling and fire prevention role.

[0043] The glass fiber mesh is a grid-like glass fiber fabric with alkali resistance and a surface coated with a polymer material. It is used to improve the crack resistance and impact resistance of the plaster layer. The anti-crack mortar is a polymer mortar with a certain deformation ability and good bonding performance, which is prepared from ordinary Portland cement, sand, and polymer as the main raw materials. The composite glass fiber mesh 5 is used as a reinforcing material and can form a plaster layer together with the anti-crack mortar. It has strong overall crack resistance, good fire resistance, and high durability, and can effectively improve the overall performance of the insulation system.

[0044] It also includes embedded parts 13 that pass through the insulation layer and are cast together with the steel truss 1. The embedded parts 13 include lower supporting parts and upper hanging parts. The connecting parts 13 are anti-corrosion treated metal components used to connect the insulation layer and the steel truss 1 structure.

[0045] The composite insulation board 2 includes a formwork body 14 cast from lightweight aggregate concrete. Two layers of steel mesh 16 are arranged in parallel in the formwork body 14. Embedded pipes are respectively embedded at the upper and lower ends of the formwork body 14. Threaded holes 15 are opened in the embedded pipes.

[0046] The connecting frame 17 is further included. Both ends of the connecting frame 17 are respectively welded and fixed to the steel mesh sheets 16 on both sides. The connecting frame 17 is also fixedly connected to the outer wall of the embedded pipe.

[0047] A construction method for an assembled composite thermal insulation exterior wall panel system, using the above-mentioned assembled composite thermal insulation exterior wall panel system, comprises the following steps: S1: Based on the pre-measured baseline, install the composite exterior wall panels, and use the insulation layer to treat thermal bridges based on the installed composite exterior wall panels; S2: Carry out pipeline construction and perform joint treatment between composite exterior wall panels and between composite exterior wall panels and main structure; S3: constructing the thermal insulation slurry 3 as the leveling layer and the waterproof layer 4; S4: The composite glass fiber mesh 5 is used as a reinforcing material and together with the anti-cracking mortar forms a plastering layer, which is bonded to the outside of the waterproof layer 4.

[0048] In S4, first apply the first layer of anti-cracking mortar, wait for a specified time, then thinly apply the second layer of anti-cracking mortar on its surface, press the fiberglass mesh into the second layer of anti-cracking mortar, wait for a specified time, and then thinly apply the third layer of anti-cracking mortar on its surface so that the hidden grid of the fiberglass mesh is exposed after the surface layer solidifies; the first-floor wall is paved with a double layer of fiberglass mesh, the inner layer of fiberglass mesh is connected, the anti-cracking mortar is wrapped around the fiberglass mesh, and the anti-cracking mortar is filled between the two layers of fiberglass mesh.

[0049] Composite exterior wall panels should be installed in sequence according to the panel layout diagram. Vertically continuously distributed composite exterior wall panels should be installed from bottom to top. No other operations should be carried out above or below the installation operation at the same time. Horizontally, installation should start from the corners. If there are door openings, installation should start from the door and window openings.

[0050] Installation of composite exterior wall panels: Draw control lines according to the panel layout drawing, draw vertical lines at the columns, draw parallel straight lines at the beams, draw horizontal planes, set the exterior wall panel installation position lines and the edge lines of the door and window openings, and determine the positions of the hanging points. The lines should be clear and the positions should be accurate.

[0051] The embedded parts 7 can be installed only after they have been inspected and accepted. When installing the embedded parts 13, the connectors should be installed along the upper and lower side beams and floor slabs. When welding is used to connect the composite exterior wall panels to the main structure, anti-corrosion and fireproofing treatments should be carried out after welding is completed. Before installing the exterior wall panels, the panels should be cleaned. Any missing edges and corners on the panels during the installation process should be repaired. The next step can be carried out only after the repairs are completed.

[0052] Before the composite exterior wall panels are hoisted into place, special joint bonding mortar should be applied to the inner side of the wall panels. The mortar joints should be full and uniform, and the control panel seam width should not be greater than 5mm. PE rods should be pressed into the outer side of the outer wall side of the wall panels. The lower end of the composite exterior wall panels should be aligned with the installation position line, and the bottom position groove of the wall panels should be aligned with the positioning ribs of the brackets. Then, the installation position of the exterior wall panels should be adjusted and corrected, and the horizontality and verticality should be adjusted to within the allowable error range. Then, the preset upper hanging screws of the wall panels should be used to connect them to the preset upper hanging fixings of the main structure.

[0053] Tighten the wall panels horizontally, controlling the width of the panel seams and squeezing them tightly. Finally, use a scraper to scrape out the excess mortar from the panel seams on the outside of the wall. The scraping depth should be no less than 30mm. During installation, ensure that the wall panels are arranged in an orderly manner, the panel seams are even, and the upper and lower exterior walls are straight without any misalignment. Always use a straightedge and feeler gauge to check the flatness and verticality of the wall panels after installation.

[0054] After the installation is completed and passed the inspection, the debris and dust between the board joints should be cleaned before the construction. After 48 hours, polyurethane foam should be poured at the horizontal joints on the outside of the lower end of the wall panel. The door and window openings should be reinforced with flat steel or angle steel on all sides. The ends of the vertical flat steel or angle steel should be welded to the embedded parts of the main structure. The horizontal flat steel or angle steel should be welded to the vertical flat steel or angle steel. The flat steel or angle steel and the composite exterior wall panel should be fixed with self-tapping screws.

[0055] Treatment of internal and external joints of composite insulation exterior wall panels: The joints between composite exterior wall panels and the joints between wall panels and the main structure should be treated 7 days after the completion of thermal bridge insulation treatment and installation of wall panels. After scraping out the bonding mortar in the joints on the outside of the wall panels for 48 hours, use PU foam adhesive to pour into the horizontal joints on the outside of the lower end of the wall panels. The joints at the connection points between the wall panels and the main structure should be filled with polyurethane foam. The connection gaps (not more than 35mm) between the wall panels and the main structure should be filled with rock wool insulation boards or foamed polyurethane with bonding mortar on both sides of the same width / thickness to seal the thermal bridge. If necessary, anti-cracking mortar should be pressed into the fiberglass mesh for reinforcement. The width of the fiberglass mesh on both sides of the overlapped joints should not be less than 100mm.

[0056] Anti-cracking and waterproofing treatment of composite exterior wall panels and internal and external joints of exterior wall panels: Anti-cracking treatment of internal and external joints of composite exterior wall panels should be carried out after the wall panel installation project is completed. Only after the anti-cracking treatment of the panel joints is completed can the construction of the waterproof layer and the thermal insulation slurry leveling layer be started; Before treating the internal and external joints of composite exterior wall panels, the exterior of the wall and the joints between the wall panels should be cleaned. Then, apply anti-cracking mortar to the panel joints, with a width of at least 100mm at door and window openings and on both sides of the panel joints. The thickness of the mortar should be approximately 3mm. Then, lay the anti-cracking reinforced fiberglass mesh and press it with a trowel until it is embedded in the mortar. After the joint anti-cracking treatment is completed, spray or apply a cement-based waterproof interface mortar or cement-based waterproof coating to the wall panels and joints. The thickness of the cement-based waterproof coating should not be less than 1.5mm, and the cement-based waterproof interface mortar should not be less than 5mm.

[0057] Construction of thermal insulation slurry leveling layer: The construction of thermal insulation slurry leveling layer should be carried out 24 hours after the anti-cracking and waterproofing treatment of the board joints is completed. Before construction, a vertical line should be fixed and the verticality of the vertical line should be verified with a theodolite. According to the designed thickness of the thermal insulation slurry layer, a control line should be pre-popped on the exterior wall with an ink line; along the direction of the vertical control line, a thickness control ash cake (insulation slurry leveling) should be constructed at intervals of about 1.5m. The thickness of the ash cake should be determined according to the thickness of the thermal insulation slurry leveling layer. A horizontal line should be drawn between the ash cakes at the same horizontal position, and additional ash cakes should be constructed in the horizontal direction at intervals of 2m. After the ash cake construction is completed, an inspection should be carried out.

[0058] The insulation slurry should be leveled by plastering. The thickness of a single layer of plastering should be 10mm and should not exceed 15mm. The interval time should be more than 12h. It should be applied until it is flush with the ash cake or ribs, and rubbed flat with a large bar. The insulation slurry layer should be repaired 2h-3h after the last layer of plastering. Before repairing, the flatness of the insulation layer should be checked with a ruler. The deviation should be controlled within ±2mm. For concave areas, use insulation slurry with good fluidity to level and smooth it. For raised areas, you can use a trowel to stand it up and scrape it flat. Finally, use a trowel to apply the insulation slurry layer in the order of horizontal first and vertical later, and use a ruler and a 2m ruler to check whether its flatness meets the acceptance standard requirements.

[0059] The inside and outside corners should be square. During construction, a wooden square should be used to check the vertical angle of the base wall corners, and a plumb line should be used to check the verticality of the corners. When plastering the insulation slurry leveling layer at large corners, a square should be used to press the insulation slurry leveling layer at the corners and rub it up and down. Use a trowel to repeatedly check, press and repair it until it basically meets the verticality requirements. Then use the inside and outside corner trowels to smooth it to ensure that the verticality deviation and the vertical angle deviation are both ±2mm. When the insulation slurry leveling plaster is constructed, colored strips should be laid at the corners to collect the fallen dust and clean it in time. If the fallen dust does not exceed 4 hours, it can be mixed into the newly mixed insulation slurry leveling in small batches for continued use. The construction of the finishing layer should meet the following requirements: Before applying the anti-cracking mortar, a drip groove should be prepared according to the design requirements. A layer of fiberglass mesh should be laid at a 45° angle at the four corners of the door and window openings. The fiberglass mesh should be intertwined at the outer corners of the wall and laid horizontally from bottom to top along the exterior wall. First, apply the first layer of anti-cracking mortar and wait for 12 hours. Then, apply a thin layer of the second layer of anti-cracking mortar on the surface. Press the fiberglass mesh into the second layer of anti-cracking mortar. The mortar should be laid flat and wrinkle-free. After waiting for 12 hours, apply a thin layer of the third layer of anti-cracking mortar on the surface. It is best to expose the hidden grid of the fiberglass mesh after the surface layer solidifies. The total thickness of the anti-cracking mortar is 3mm-5mm. The elastic primer should be applied 2 hours after the initial setting of the anti-cracking mortar. The application should be even and there should be no leakage.

[0060] The first-floor wall should be paved with double-layer glass fiber mesh. The inner glass fiber mesh should be butted together. The butt joints should not be at the corners and should be at least 200mm away from the corners. The outer glass fiber mesh should be overlapped at 40° and covered with anti-cracking mortar. The anti-cracking mortar between the two layers of glass fiber mesh should be full. Dry laying and dry overlap are prohibited. The anti-cracking mortar should be staggered and disconnected at intervals to facilitate the overlap of subsequent layers. If a pause is required on a continuous wall, the second layer of anti-cracking mortar should not completely cover the already laid glass fiber mesh. It should form a stepped slope with the second layer of anti-cracking mortar on the glass fiber mesh, with a spacing of at least 150mm.

[0061] After the crack-resistant mortar is applied, it should be inspected for flatness, verticality, and squareness of corners. Any non-compliance should be repaired with crack-resistant mortar. Applying ordinary cement mortar for waistlines, window linings, etc. on this surface layer is strictly prohibited. After the crack-resistant mortar and fiberglass mesh are laid, they must not be moved and must be allowed to cure for at least 24 hours before proceeding to the next step. In cold and humid climates, the curing time should be appropriately extended. After the finishing layer is completed, a cement-based waterproof coating should be applied.

[0062] Finishing layer construction: Paint finishing: Apply flexible water-resistant putty as required, then apply paint; Finishing mortar finishing: Finishing mortar can be used as the finishing material, and its construction thickness is 2mm-5mm.

[0063] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. An assembled composite thermal insulation exterior wall panel system, characterized in that: include: A steel truss (1), wherein the steel truss (1) is cast with lightweight aggregate concrete; A thermal insulation layer, the thermal insulation layer being arranged on one side of the steel truss (1); Thermal insulation slurry (3), the thermal insulation slurry (3) serving as a leveling layer surrounding or enveloping the thermal insulation layer, thereby forming a composite exterior wall panel in combination with the thermal insulation layer and the steel truss (1); A waterproof layer (4), the waterproof layer (4) being arranged on the outside of the composite exterior wall panel; A composite glass fiber mesh or galvanized welded mesh (5), the composite glass fiber mesh or galvanized welded mesh (5) is used as a reinforcing material and together with the anti-cracking mortar forms a finishing layer bonded to the outside of the waterproof layer (4).

2. The assembled composite thermal insulation exterior wall panel system according to claim 1, characterized in that: The thermal insulation layer is a composite thermal insulation board (2), one end of the composite thermal insulation board (2) is bonded to the steel truss (1), and the other end of the composite thermal insulation board (2) is poured with thermal insulation slurry (3); A steel truss (1) is provided with a plurality of composite insulation boards (2) as a base material, adjacent composite insulation boards (2) are bonded to each other, grooves (10) are provided on both sides of the composite insulation boards (2), and the insulation slurry (3) is poured into the grooves (10) to form fireproof barrier reinforcement ribs (2).

3. The assembled composite thermal insulation exterior wall panel system according to claim 2, characterized in that: It also includes a connecting piece (12), which sequentially penetrates the thermal insulation slurry (3) and the composite thermal insulation board (2) and then penetrates into the steel truss (1).

4. The assembled composite thermal insulation exterior wall panel system according to claim 1, characterized in that: The thermal insulation layer is a composite thermal insulation board (8), the composite thermal insulation board (8) and the steel truss (1) are filled with thermal insulation slurry (3), and the thermal insulation slurry (3) wraps the composite thermal insulation board (8). A steel bar truss (1) is provided with a plurality of composite insulation boards (8) as a base material, and gaps are provided between adjacent composite insulation boards (8), and the gaps are filled with insulation slurry (3).

5. The assembled composite thermal insulation exterior wall panel system according to claim 4, characterized in that: It also includes an anchor (12), which penetrates the thermal insulation slurry (3) and then extends into the steel truss (1), and the anchor (12) penetrates the gap between adjacent composite thermal insulation boards (8).

6. The assembled composite thermal insulation exterior wall panel system according to claim 1, characterized in that: One end of the steel truss (1) away from the thermal insulation layer is recessed inward to form an embedded groove (11), wherein an embedded part (7) is provided in the embedded groove (11), and the embedded part (7) is bolted to the steel truss (1) and the thermal insulation layer, and further comprises a connecting part (13) that passes through the thermal insulation layer and is cast together with the steel truss (1).

7. The assembled composite thermal insulation exterior wall panel system according to claim 2, characterized in that: The composite thermal insulation board (2) comprises a formwork body (14) cast from lightweight microporous concrete, two layers of steel mesh (16) are arranged in parallel in the formwork body (14), and pre-buried pipes are respectively embedded at the upper and lower ends of the formwork body (14), and threaded holes (15) are opened in the pre-buried pipes.

8. The assembled composite thermal insulation exterior wall panel system according to claim 7, characterized in that: It also includes a connecting frame (17), the two ends of which are respectively welded and fixed to the steel mesh sheets (16) on both sides, and the connecting frame (17) is also fixedly connected to the outer wall of the embedded pipe.

9. A construction method for an assembled composite thermal insulation exterior wall panel system, characterized in that: Using the assembled composite thermal insulation exterior wall panel system according to any one of claims 1 to 8, The following steps are involved: S1: Based on the pre-measured baseline, install the composite exterior wall panels, and use the insulation layer to treat thermal bridges based on the installed composite exterior wall panels; S2: Carry out pipeline construction and perform joint treatment between composite exterior wall panels and between composite exterior wall panels and main structure; S3: Applying thermal insulation slurry (3) as a leveling layer and waterproofing layer (4); S4: The composite glass fiber mesh (5) is used as a reinforcing material and together with the anti-cracking mortar, forms a plastering layer, which is bonded to the outside of the waterproof layer (4).

10. The construction method of the assembled composite thermal insulation exterior wall panel system according to claim 9, characterized in that: In S4, first apply the first layer of anti-cracking mortar, wait for a specified time, then thinly apply the second layer of anti-cracking mortar on its surface, press the fiberglass mesh into the second layer of anti-cracking mortar, wait for a specified time, and then thinly apply the third layer of anti-cracking mortar on its surface so that the hidden grid of the fiberglass mesh is exposed after the surface layer solidifies; the first-floor wall is paved with a double layer of fiberglass mesh, the inner layer of fiberglass mesh is connected, the anti-cracking mortar is wrapped around the fiberglass mesh, and the anti-cracking mortar is filled between the two layers of fiberglass mesh.

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