UHPC (Ultra High Performance Concrete) heat preservation and decoration integrated external wall panel

Abstract

The utility model relates to a UHPC (Ultra High Performance Concrete) heat preservation and decoration integrated externally-hung wallboard which comprises an internal steel reinforcement framework, embedded parts and a concrete layer, the embedded parts comprise a hoisting embedded part, an upper fixing embedded part and a bottom fixing embedded part, the hoisting embedded part is fixed at the top of the steel reinforcement framework, the upper fixing embedded part is fixed at the upper half part of the steel reinforcement framework, and the bottom fixing embedded part is fixed at the lower half part of the steel reinforcement framework. The bottom fixing embedded part is fixed to the bottom of the steel reinforcement framework and comprises an embedded part and a meshing connecting part, the embedded part is embedded into the concrete layer, and the meshing connecting part is exposed out of the concrete layer; the concrete layer sequentially comprises a base layer, a bottom coating, a middle coating, a facing coating and a surface coating from inside to outside, the base layer is formed by pouring UHPC concrete, the bottom coating is formed by spraying heat-conducting primer, the middle coating is formed by spraying a ceramic vacuum microbead heat-preservation and heat-insulation coating, the facing coating is formed by spraying water-soluble pigment, and the surface coating is formed by spraying water-soluble pigment. And the surface coating is formed by spraying an anti-radiation ionic membrane. The utility model is light and thin and has high strength.

Description

Technical Field

[0001] The utility model relates to the field of prefabricated buildings, and in particular to a UHPC thermal insulation and decorative integrated exterior wall panel. Background Art

[0002] In steel-structured buildings, the exterior wall panels in their exterior enclosure systems primarily utilize ALC panels and conventional precast concrete panels. To achieve better insulation, these existing exterior wall panels typically require additional insulation panels to be bonded to the existing panels. However, these existing bonding methods pose a safety hazard of loose, loose insulation panels. Furthermore, existing insulation panels are also thick and heavy, especially when bonded to insulation panels using conventional precast concrete panels. These panels are heavier, thicker, and occupy excessive indoor floor space. Utility Model Content

[0003] The utility model discloses a UHPC thermal insulation and decorative integrated exterior wall panel. UHPC is selected as the material of the exterior wall panel and is combined with a new thermal insulation material to form a lighter, stronger and safer thermal insulation and decorative integrated exterior wall panel.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the present utility model is:

[0005] A UHPC thermal insulation and decorative integrated exterior wall panel includes an internal steel frame, embedded parts, and a concrete layer wrapping the steel frame. The embedded parts include a lifting embedded part, an upper fixed embedded part, and a bottom fixed embedded part. The lifting embedded part is fixed to the top of the steel frame, the upper fixed embedded part is fixed to the upper half of the steel frame, and the bottom fixed embedded part is fixed to the bottom of the steel frame. The bottom fixed embedded part includes an embedded part and a snap-fit ​​connection part. The embedded part is buried in the concrete layer, and the snap-fit ​​connection part is exposed outside the concrete layer.

[0006] The concrete layer includes base layer, primer layer, intermediate layer, finishing layer and top layer from the inside to the outside. The base layer is cast with UHPC concrete, the primer layer is sprayed with thermal conductive primer, the intermediate layer is sprayed with ceramic vacuum micro-bead thermal insulation coating, the finishing layer is sprayed with water-soluble pigment, and the top layer is sprayed with anti-radiation ion membrane.

[0007] Furthermore, the steel frame includes transverse steel bars and longitudinal steel bars. Multiple transverse steel bars arranged at intervals and multiple longitudinal steel bars arranged at intervals are cross-tied and fixed to each other. Transverse reinforcing steel bars are added at every interval of a row of transverse steel bars, and longitudinal reinforcing steel bars are added at every interval of a column of longitudinal steel bars. The diameter of the reinforcing steel bars is larger than the diameter of the transverse steel bars and the longitudinal steel bars.

[0008] Furthermore, the UHPC concrete material used in the base layer is prepared by mixing white cement, quartz sand, coarse aggregate, mineral powder, water and admixtures.

[0009] Furthermore, the particle size of the quartz sand is 0-5 mm, and the particle size of the coarse aggregate is 5-10 mm.

[0010] Furthermore, the UHPC concrete material used in the base layer is prepared by mixing gray cement, yellow sand, coarse aggregate, fly ash, mineral powder, water and admixtures.

[0011] Furthermore, the particle size of the yellow sand is 0-5 mm, and the particle size of the coarse aggregate is 5-10 mm.

[0012] Furthermore, the total thickness of the UHPC thermal insulation and decorative integrated exterior wall panel is 60-70 mm, the spraying thickness of the primer layer is 60 um ± 5 um, the spraying thickness of the middle coating layer is 120 um ± 10 um, and the spraying thickness of the top coating layer is 40 um ± 5 um.

[0013] Furthermore, the upper fixed embedded part is a sleeve, and holes at both ends of the sleeve are exposed outside the concrete layer.

[0014] Furthermore, the embedded portion of the bottom fixed embedded part includes a first fixing plate and a second fixing plate arranged in parallel at an interval, the first fixing plate and the second fixing plate are fixedly connected by a first connecting plate perpendicular to the first fixing plate, the first fixing plate and the first connecting plate are completely embedded in the concrete layer, and the outer surface of the second fixing plate is exposed outside the concrete layer;

[0015] The bite connection portion of the bottom fixed embedded part includes a second connecting plate that is perpendicular to the second fixed plate and connected to the second fixed plate. A through long groove with an open bottom is provided on the second connecting plate, and the through long groove forms a bite socket. Vertical sleeves are respectively provided on both sides of the second connecting plate. The sleeves are fixed on the second connecting plate, and upper and lower adjustment bolts are inserted into the sleeves.

[0016] Furthermore, a longitudinal tie bar is provided on a side of the second fixing plate facing the first fixing plate, and a through hole is provided on the first connecting plate and a transverse tie bar is inserted into the through hole.

[0017] The exterior wall panels designed by the present invention combine thermal insulation and decorative features, and the selected thermal insulation material can be formed on the UHPC base layer by spraying, and the thermal insulation material has its own coating function, realizing the integration of thermal insulation and decoration. Compared with the structure in which the thermal insulation layer and the base layer are bonded in the prior art, there is no risk of falling off due to weak bonding; in addition, the base layer adopts UHPC concrete, which is not only stronger than the base layer formed by ordinary concrete in the prior art, but also can reduce the thickness of the exterior wall panels (the thickness of traditional exterior wall panels is about 100mm, and the present invention can reduce the thickness by 30%-40%); furthermore, the exterior wall panels of the present invention are pre-embedded with lifting embedded parts for convenient lifting, bottom fixing embedded parts for convenient fixed installation of the exterior wall panels, and upper fixing embedded parts for preventing the exterior wall panels from tipping over, which provides convenience for the assembly of the exterior wall panels. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the steel skeleton structure inside the UHPC thermal insulation and decorative integrated exterior wall panel in the embodiment;

[0019] Figure 2 This is a schematic diagram of the overall structure of the UHPC thermal insulation and decorative integrated exterior wall panel;

[0020] Figure 3 This is a partial side cross-sectional view of the UHPC thermal insulation and decorative integrated exterior wall panel;

[0021] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0022] Figure 5 It is a structural diagram of the bottom fixed embedded parts;

[0023] Figure 6 This is a schematic diagram of the base structure fixed on the top of the steel beam;

[0024] Figure 7 This is a schematic diagram of the bottom assembly structure after the UHPC thermal insulation and decorative integrated exterior wall panel is installed.

[0025] Reference numerals:

[0026] 1. Horizontal reinforcement; 2. Longitudinal reinforcement; 3. Reinforcement reinforcement; 4. Lifting embedded parts; 5. Upper fixed embedded parts; 6. Bottom fixed embedded parts; 61. First fixing plate; 62. First connecting plate; 63. Second fixing plate; 64. Second connecting plate; 65. Sleeve; 66. Snap-fit ​​socket; 67. Upper and lower adjustment bolts; 68. Horizontal tie bars; 69. Longitudinal tie bars; 7. Concrete layer; 71. Base layer; 72. Primer; 73. Middle coat; 74. Finishing coat; 75. Top coat; 8. Base; 81. Snap-fit ​​fixing plate; 82. Bottom plate; 83. Stiffener plate; 84. Waist-shaped hole; 85. Left and right adjustment bolts; 9. External wall panel. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0028] This embodiment discloses a UHPC thermal insulation and decorative integrated external wall panel (hereinafter referred to as "external wall panel"), such as Figure 1 and Figure 2 As shown, the external wall panel 9 mainly includes an internal steel frame, embedded parts fixed to the steel frame, and a concrete layer 7 formed by pouring and spraying to wrap around the steel frame. The single external wall panel in this embodiment adopts a large-scale design, which can bring a better visual overall sense to the building. To facilitate the installation of the external wall panel, the relevant embedded parts are embedded in the erected steel frame before pouring the concrete layer 7. The embedded parts in this embodiment are divided into lifting embedded parts 4, upper fixed embedded parts 5 and bottom fixed embedded parts 6. The lifting embedded parts 4 are used to lift the external wall panel. Therefore, the lifting embedded parts 4 are fixed to the top of the steel frame. The upper fixed embedded parts 5 are used to prevent the upper part of the large-sized external wall panel from tipping over. Therefore, the upper fixed embedded parts 5 are fixed to the upper half of the steel frame. The bottom fixed embedded parts 6 are used as load-bearing embedded parts for the installation and fixation of the external wall panel. Therefore, the bottom fixed embedded parts 6 are fixed to the bottom of the steel frame.

[0029] The structure of the steel frame is described as follows: the steel frame in this embodiment is formed by a single layer of steel bars arranged in two directions. The steel frame can be divided into transverse steel bars 1 and longitudinal steel bars 2. Figure 1As shown, multiple transverse steel bars 1 are arranged at intervals in the horizontal direction, and multiple longitudinal steel bars 2 are arranged at intervals in the vertical direction. The transverse steel bars 1 and the longitudinal steel bars 2 intersect with each other and are tied and fixed. Considering that the present invention is a large-scale external wall panel, in order to prevent the external wall panel from bending, this embodiment also provides reinforcing steel bars 3 in the transverse and longitudinal directions on the steel skeleton. That is, a transverse reinforcing steel bar 3 is added at every other row of transverse steel bars 1, and a longitudinal reinforcing steel bar 3 is added at every other column of longitudinal steel bars 2. The diameter of the reinforcing steel bar 3 is larger than the diameter of the transverse steel bar 1 and the longitudinal steel bar 2, for example, the diameter of the reinforcing steel bar 3 is 1.3-1.5 times that of the transverse steel bar 1 or the longitudinal steel bar 2.

[0030] Continue to describe the structure of the embedded part: In this embodiment, a sleeve is used as the upper fixed embedded part 5, such as Figure 2 As shown, the holes at both ends of the sleeve are exposed outside the concrete layer 7. When installing the external wall panel, first complete the installation of the external wall panel through the bottom fixed embedded part 6, and then use a threaded screw to screw into the upper fixed embedded part 5, so that the screw is fixedly connected to the angle steel welded to the steel beam in advance to prevent the upper part of the external wall panel from tilting outward and bending and deforming. The bottom fixed embedded part 6 in this embodiment has the function of fine-tuning the installation position, and is connected to the base 8 fixed to the top of the steel beam in a plug-in and bite-engaging manner. Therefore, the bottom fixed embedded part 6 can be divided into an embedded part and a bite-engaging connection part, wherein the embedded part is buried in the concrete layer 7 and the bite-engaging connection part is exposed outside the concrete layer 7.

[0031] The structure of the bottom fixed embedded part 6 in this embodiment is as follows Figure 5 As shown, the embedded portion of the bottom fixed embedded part includes a first fixed plate 61 and a second fixed plate 63 that are spaced apart and arranged in parallel. The first fixed plate 61 and the second fixed plate 63 are fixedly connected by a first connecting plate 62 that is perpendicular to the first fixed plate 61. The first fixed plate 61 and the first connecting plate 62 are completely embedded in the concrete layer 7, and the outer surface of the second fixed plate 63 is exposed outside the concrete layer 7. The bite connection portion of the bottom fixed embedded part 6 includes a second connecting plate 64 that is perpendicular to the second fixed plate 63 and fixedly connected to the second fixed plate 63. The second connecting plate 64 is provided with a through long groove with an open bottom, which forms the bite socket 66 of this embodiment. Vertical sleeves 65 are respectively provided on both sides of the second connecting plate 64. The sleeves 65 are fixed to the second connecting plate 64. A stiffening plate ( Figure 5 The sleeve 65 is connected to the second fixing plate 63 (not numbered), and the upper and lower adjustment bolts 67 are inserted into the sleeve 65. To enhance the tensile strength, in this embodiment, longitudinal tie bars 69 are provided at the upper and lower ends of the second fixing plate 63 facing the first fixing plate 61. A through hole is provided in the first connecting plate 62, and a transverse tie bar 68 is inserted into the through hole.

[0032] The bottom fixed embedded part 6 is fixedly connected to the base 8 fixed at the bottom of the steel beam by plugging and biting. The structure of the base 8 is as follows: Figure 6 As shown, the longitudinal section of the base 8 is L-shaped. The base 8 includes a horizontal bottom plate 82 and a vertical occlusal fixing plate 81. Stiffening plates 83 are provided at the edges of both sides between the occlusal fixing plate 81 and the bottom plate 82. A waist-shaped hole 84 is provided on the bottom plate 82, and a threaded hole is provided on the upper part of the stiffening plate 83. The threaded holes are used to insert left and right adjustment bolts 85. When the bottom fixing embedded part 6 is connected to the base 8, as shown in FIG. Figure 7 As shown, the snap-in socket 66 of the bottom fixing embedded part 6 is inserted into the snap-in fixing plate 81 of the base 8. The vertical position of the external wall panel 9 can be fine-tuned by the vertical adjustment bolts 67 on the bottom fixing embedded part 6, and the horizontal position of the external wall panel 9 can be fine-tuned by the horizontal adjustment bolts 85 on the base 8.

[0033] In this embodiment, the concrete layer 7 of the external wall panel 9 is as follows Figure 3 and Figure 4 As shown, from the inside to the outside, it includes a base layer 71, a primer layer 72, a mid-coat layer 73, a finishing layer 74 and a topcoat layer 75. Among them, the base layer 71 of this embodiment is cast with UHPC concrete. UHPC has ultra-high mechanical strength. Compared with other ordinary concretes, it has the characteristics of chemical corrosion resistance, water resistance, small mass for the same volume, high strength and certain self-healing ability. This embodiment provides two UHPC concrete materials with different component ratios, which can be selected according to the finishing color of the external wall panel 9. One ratio is made of white cement, 0-5mm quartz sand, 5-10mm coarse aggregate, mineral powder, water, admixtures, etc. in a proportion; the other is made of gray cement, 0-5mm yellow sand, 5-10mm coarse aggregate, fly ash, mineral powder, water, admixtures, etc. in a proportion. During the manufacture of exterior wall panels 9, after the steel skeleton and embedded components are assembled, a base layer 71 is formed by pouring any of the aforementioned UHPC concrete materials. After the base layer 71 is poured and cured, its surface is polished and cleaned to ensure it is clean and free of dust, laitance, rust, mildew, precipitated salts, and other debris. The base layer 71 should be flat, with vertical surfaces, vertical corners, and square, without any missing edges or corners. If these requirements are not met, cement mortar with a strength grade of at least M5 should be used for leveling. The flatness should meet the intermediate or higher plastering acceptance standard, with a plastering deviation of less than 4mm.

[0034] After the base layer 71 is processed, a thermally conductive primer is sprayed on the surface of the base layer 71 to form a base coat 72. Taking the overall thickness of the external wall panel 9 to be formed as 60mm-70mm as an example, the spraying thickness of the thermally conductive primer can be controlled to be about 60 microns. After the base coat 72 solidifies and dries, the middle coat 73 is sprayed. The middle coat 73 serves as a thermal insulation layer. In this embodiment, a ceramic vacuum microbead thermal insulation coating is used to form the middle coat 73. The ceramic vacuum microbead thermal insulation coating can effectively improve the thermal insulation performance of the external wall panel while significantly reducing the thickness of the external wall panel. The ceramic vacuum microbead thermal insulation coating is composed of a variety of materials such as polymers, inorganic sols and ceramic microbeads, among which ceramic microbeads are the main thermal insulation material. Since ceramic microbeads are a material with a microporous structure, their pore size and distribution are controllable, so a very high thermal insulation effect can be achieved. The polymer and inorganic sol play the role of coating adhesion and toughness, allowing the coating to be firmly attached to the base material. When forming midcoat 73, two spray coats are applied to a thickness of approximately 120 microns. After midcoat 73 is sprayed and dried, a water-soluble pigment is sprayed to form a finishing coat 74. The water-soluble pigment can be selected based on the design, and a design pattern can also be formed on finishing coat 74. After finishing coat 74 is sprayed and dried, a radiation-resistant ion membrane is sprayed to form a topcoat 75. The thickness of topcoat 75 is controlled to be approximately 40 microns.

[0035] The exterior wall panels 9 disclosed in this embodiment are not only lightweight and thin, but also very easy to install and can be adjusted in position. Once the position is adjusted, the screws and nuts can be tightened to secure the panels. The joints between adjacent exterior wall panels 9 are sealed with airtight strips and PE rods on the indoor and outdoor sides, respectively, and sealed with silicone weatherproof adhesive on the outside to prevent rainwater from entering the room.

[0036] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A UHPC thermal insulation and decorative integrated exterior wall panel, comprising an internal steel skeleton, embedded parts, and a concrete layer surrounding the steel skeleton, characterized in that: The embedded parts include lifting embedded parts, upper fixed embedded parts and bottom fixed embedded parts. The lifting embedded parts are fixed to the top of the steel frame, the upper fixed embedded parts are fixed to the upper half of the steel frame, and the bottom fixed embedded parts are fixed to the bottom of the steel frame. The bottom fixed embedded parts include an embedded part and a bite connection part. The embedded part is buried in the concrete layer, and the bite connection part is exposed outside the concrete layer. The concrete layer includes base layer, primer layer, intermediate layer, finishing layer and top layer from the inside to the outside. The base layer is cast with UHPC concrete, the primer layer is sprayed with thermal conductive primer, the intermediate layer is sprayed with ceramic vacuum micro-bead thermal insulation coating, the finishing layer is sprayed with water-soluble pigment, and the top layer is sprayed with anti-radiation ion membrane.

2. The UHPC thermal insulation and decorative integrated exterior wall panel according to claim 1, characterized in that: The steel frame includes transverse steel bars and longitudinal steel bars. Multiple transverse steel bars arranged at intervals and multiple longitudinal steel bars arranged at intervals are cross-tied and fixed to each other. Transverse reinforcing steel bars are added at every interval of a row of transverse steel bars, and longitudinal reinforcing steel bars are added at every interval of a column of longitudinal steel bars. The diameter of the reinforcing steel bars is larger than the diameter of the transverse steel bars and the longitudinal steel bars.

3. The UHPC thermal insulation and decorative integrated exterior wall panel according to claim 1, characterized in that: The total thickness of the UHPC thermal insulation and decorative integrated exterior wall panel is 60-70 mm, the spraying thickness of the primer layer is 60 μm ± 5 μm, the spraying thickness of the middle coating layer is 120 μm ± 10 μm, and the spraying thickness of the top coating layer is 40 μm ± 5 μm.

4. The UHPC thermal insulation and decorative integrated exterior wall panel according to claim 1, characterized in that: The upper fixed embedded part is a sleeve, and holes at both ends of the sleeve are exposed outside the concrete layer.

5. The UHPC thermal insulation and decorative integrated exterior wall panel according to claim 1, characterized in that: The embedded portion of the bottom fixed embedded part includes a first fixing plate and a second fixing plate arranged in parallel with each other, the first fixing plate and the second fixing plate are fixedly connected by a first connecting plate perpendicular to the first fixing plate, the first fixing plate and the first connecting plate are completely embedded in the concrete layer, and the outer surface of the second fixing plate is exposed outside the concrete layer; The bite connection portion of the bottom fixed embedded part includes a second connecting plate that is perpendicular to the second fixed plate and connected to the second fixed plate. A through long groove with an open bottom is provided on the second connecting plate, and the through long groove forms a bite socket. Vertical sleeves are respectively provided on both sides of the second connecting plate. The sleeves are fixed on the second connecting plate, and upper and lower adjustment bolts are inserted into the sleeves.

6. The UHPC thermal insulation and decorative integrated exterior wall panel according to claim 5, characterized in that: A longitudinal tie bar is provided on a side of the second fixing plate facing the first fixing plate, and a through hole is provided on the first connecting plate and a transverse tie bar is inserted into the through hole.

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