A lightweight concrete grouting method and the wall formed thereby

Abstract

The present invention discloses a method for grouting lightweight concrete and the formed wall body. Laminated baffles and limiting protrusions are arranged inside the formwork. The laminated baffle includes a baffle opening and closing section and a baffle fixing section. The baffle opening and closing section can rotate and open / close along the rotating shaft, and the limiting protrusion can limit the rotation angle of the baffle opening and closing section. When the formwork below the baffle opening and closing section is filled with lightweight concrete, the baffle opening and closing section can be closed due to the pressure of the lightweight concrete above the baffle opening and closing section and / or the buoyancy of the lightweight concrete below the baffle opening and closing section. The present invention can effectively reduce the extrusion of concrete on the formwork. On this basis, the integration of the formwork and the decorative board can be realized, thereby improving the construction accuracy and construction speed of the lightweight concrete wall body.

Description

Technical Field

[0001] The present invention relates to the technical field of building walls. Specifically, it relates to a lightweight concrete grouting method and the wall formed thereby. Background Art

[0002] Lightweight concrete refers to concrete with an apparent density not greater than 1950 kg / m 3 and includes foam concrete, polystyrene particle concrete, and other lightweight aggregate concretes, etc. Lightweight concrete is often poured into a formwork by grouting to form a wall. In the prior art, the main production process of lightweight concrete walls is to use light steel keels as supports, and use steel meshes, wooden formworks, fiber cement boards, etc. fixed on the keels to form a formwork, and the formwork is filled with lightweight concrete. The forms of lightweight concrete walls in the prior art are diverse, covering building exterior walls and interior walls, including light steel lightweight concrete shear walls (JGJ 383-2016), foam concrete light steel keel composite walls (CECS 406:2015), lightweight concrete enclosure wall panels (T / CECS1170-2022), lightweight thermal insulation structure integrated wall panels (T / CECS 1201-2022), light steel frame lightweight concrete partition walls (CECS 452-2016), etc.

[0003] During the grouting process of lightweight concrete, due to the self-weight of the concrete, the formwork will be deformed by the extrusion of the concrete, ultimately resulting in the generation of formwork bulging defects. In this regard, the solutions in the prior art mainly include: (1) strengthening the connection between formworks or between the formwork and the frame; (2) strengthening the external support of the formwork; (3) pouring in layers and waiting for the lower-layer concrete to reach a certain strength before grouting the upper-layer concrete.

[0004] In addition, since the formwork of lightweight concrete walls in the prior art is usually connected to the keel by screws (bolts), the screws (bolts) will penetrate the formwork. Therefore, a prefabricated decorative surface cannot be made on the surface of the formwork, and the decorative surface construction can only be carried out after the formwork is removed and leveled after the lightweight concrete is poured. Therefore, a large number of existing external decorative board categories on the market cannot be directly applied to the construction of lightweight concrete walls, which greatly limits the popularization and development of lightweight concrete walls. Summary of the Invention

[0005] The purpose of the present invention is to provide a new idea for solving the formwork bulging problem caused by concrete grouting in addition to strengthening the connection between formworks, strengthening the external support of the formwork, and pouring in layers, which can effectively reduce the extrusion of the concrete on the formwork. On this basis, the integration of the formwork and the decorative board can be successfully achieved.

[0006] To achieve the above object of the present invention, the following technical solutions are specifically adopted:

[0007] The present invention provides a lightweight concrete grouting method, including the following steps:

[0008] S1. Assemble the keel into a framework;

[0009] S2. Install a layered baffle and a limiting protrusion inside the framework. The layered baffle includes a baffle opening and closing section and a baffle fixing section. The baffle opening and closing section can rotate and open / close along a rotating shaft, and the limiting protrusion can limit the rotation angle of the baffle opening and closing section;

[0010] S3. Install a template outside the framework to form a formwork shell;

[0011] S4. Pour lightweight concrete into the formwork shell. The lightweight concrete is poured from above the baffle opening and closing section through the baffle opening and closing section into the area below the baffle opening and closing section. When the formwork shell below the baffle opening and closing section is filled with the lightweight concrete, the baffle opening and closing section closes due to the pressure of the lightweight concrete from above the baffle opening and closing section and / or the buoyancy of the lightweight concrete from below the baffle opening and closing section;

[0012] S5. Continue to pour lightweight concrete into the formwork shell, and the lightweight concrete accumulates on the upper layer of the layered baffle with the baffle opening and closing section already closed.

[0013] Preferably, in the present invention, the layered baffle is placed on the horizontal keel.

[0014] Preferably, in the present invention, the baffle fixing section is provided with a rotating shaft hole, and both ends of the rotating shaft are rotatably connected to the rotating shaft hole.

[0015] Preferably, in the present invention, the rotating shaft is placed on the horizontal keel, and the rotating shaft is located between two baffle fixing sections.

[0016] Preferably, in the present invention, the template includes a decorative template. The decorative template includes a substrate, and a decorative layer is provided on the outer side of the substrate. The substrate is connected to the keel through flat hangers.

[0017] Preferably, in the present invention, protrusions are provided on the upper side and / or the lower side of the substrate. A bayonet is formed between the bottom plate of the flat hanger and the support plate, and the protrusions are embedded in the bayonet. The support plate is one of an L-shaped support plate, a T-shaped support plate, a dovetail-shaped support plate, and a Y-shaped support plate.

[0018] Preferably, in the present invention, the upper and lower adjacent decorative templates are spliced by rabbets. The rabbet of the upper decorative template covers the rabbet of the lower decorative template. A buffer gasket is provided between the substrate and the bottom plate, and a heat insulation gasket is provided between the bottom plate and the keel. The splicing joint of adjacent decorative templates is filled with sealant, and a waterproof and breathable film is pasted at the splicing joint of adjacent decorative templates. The waterproof and breathable film is pasted on the back side of the substrate.

[0019] Preferably, in the present invention, at the internal and external corners of the formwork, the templates intersecting vertically are connected to the keel through internal and external corner hangers. The internal and external corner hangers include an inner plate, which is connected to an outer plate through a connecting plate. The inner plate includes a right inner plate and a left inner plate that are not at the same height. The outer plate includes a right outer plate and a left outer plate that are not at the same height. The right inner plate and the left outer plate are at the same height, and the left inner plate and the right outer plate are at the same height.

[0020] Preferably, in the present invention, at the internal corner of the formwork: the outer plate is fixed to the keel through connecting nails, the inner plate is connected to the notch of the template, a buffer gasket is provided between the outer plate and the template, and a heat insulation gasket is provided between the outer plate and the keel; at the external corner of the formwork: the inner plate is fixed to the keel through connecting nails, the outer plate is connected to the notch of the template, a buffer gasket is provided between the inner plate and the template, and a heat insulation gasket is provided between the inner plate and the keel.

[0021] The present invention also provides a lightweight concrete wall, which is manufactured by using the lightweight concrete grouting method.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] (1) The method described in the present invention is not only applicable to the grouting of building exterior walls and interior walls, but also applicable to the grouting of structural columns, construction columns and other concrete members with larger hole depths that require formwork support. The present invention is applicable to the factory prefabrication of assembled walls and can also be applicable to the on-site construction of lightweight concrete walls.

[0024] (2) The design of the layered baffle in the present invention can distribute the weight of the concrete in the formwork to the keel through the layered baffle, thereby effectively reducing the stacking and extrusion of the concrete on the template. The design of the opening and closing section of the baffle can not only ensure the smooth pouring of the concrete but also realize the isolation between the upper and lower layers of concrete. By using the internal and external corner hangers, the connection relationship at the internal and external corners of the template can be strengthened, making it possible to integrate the template and the decorative board. The present invention can carry out continuous pouring operations without adding external support to the template. On this basis, the present invention provides a technical solution for replacing the template with a decorative template.

[0025] (3) The internal and external corner hanging parts provided by the present invention have strong versatility and can be used not only in external wall decoration structures such as stone dry hanging, but also in internal wall decoration structures such as the layout of quick-install panels. The internal and external corner hanging parts provided by the present invention can ensure the connection relationship at the internal and external corners of the formwork during grouting, effectively prevent formwork swelling and slurry leakage, and can effectively avoid the generation of defects such as cracking and deformation at the internal and external corners of the wall in the later stage, which damage the appearance. The internal and external corner hanging parts provided by the present invention can be applied to both external corners and internal corners. The internal and external corner hanging parts provided by the present invention can be manufactured by sheet metal technology, with low manufacturing cost, a wide selection of material types, and guaranteed structural strength.

[0026] (4) By using decorative formwork to replace traditional formwork, the present invention can save steps such as formwork removal, leveling, and decorative surface construction, and can save a large amount of time and construction period. Compared with on-site construction, the decorative formwork can not only be installed more quickly, but also the decorative formwork is manufactured and inspected in the factory, which can ensure the quality of materials and the accuracy of construction. On-site construction is easily interfered by environmental factors such as weather, and the present invention can avoid these problems and provide higher quality and construction period controllability. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0028] Figure 1 is a schematic diagram of the framework according to an embodiment of the present invention;

[0029] Figure 2 is a schematic diagram of the layered baffle according to an embodiment of the present invention Figure 1 ;

[0030] Figure 3 is a schematic diagram of the layered baffle according to an embodiment of the present invention Figure 2 ;

[0031] Figure 4 is a schematic diagram of the layered baffle according to an embodiment of the present invention Figure 3 ;

[0032] Figure 5 is a schematic diagram of the layered baffle according to an embodiment of the present invention Figure 4 ;

[0033] Figure 6 is a schematic diagram of the layered baffle according to an embodiment of the present invention Figure 5 ;

[0034] Figure 7Schematic diagram of a formwork according to an embodiment of the present invention;

[0035] Figure 8 Schematic diagram of the positional relationship between a rotating shaft and a fixed section of a baffle according to an embodiment of the present invention Figure 1 ;

[0036] Figure 9 Schematic diagram of the positional relationship between a rotating shaft and a fixed section of a baffle according to an embodiment of the present invention Figure 2 ;

[0037] Figure 10 Schematic diagram of a lightweight concrete wall according to an embodiment of the present invention Figure 1 ;

[0038] Figure 11 Is Figure 10 Enlarged view of part A in

[0039] Figure 12 Schematic diagram of a lightweight concrete wall according to an embodiment of the present invention Figure 2 ;

[0040] Figure 13 Schematic diagram of an L-shaped support plate according to an embodiment of the present invention;

[0041] Figure 14 Schematic diagram of a T-shaped support plate according to an embodiment of the present invention;

[0042] Figure 15 Schematic diagram of a dovetail-shaped support plate according to an embodiment of the present invention;

[0043] Figure 16 Schematic diagram of the connection between a Y-shaped support plate and a formwork according to an embodiment of the present invention;

[0044] Figure 17 Schematic diagram of the connection between a T-shaped support plate and a formwork according to an embodiment of the present invention;

[0045] Figure 18 Schematic diagram of an internal and external corner hanger according to an embodiment of the present invention Figure 1 ;

[0046] Figure 19 Schematic diagram of an internal and external corner hanger according to an embodiment of the present invention Figure 2 ;

[0047] Figure 20 Schematic diagram of an internal and external corner hanger according to an embodiment of the present invention Figure 3 ;

[0048] Figure 21 Schematic diagram of an internal and external corner hanger according to an embodiment of the present invention Figure 4 ;

[0049] Figure 22Schematic diagram of the internal and external corner hanging parts according to an embodiment of the present invention Figure 5 ;

[0050] Figure 23 Schematic diagram of the internal and external corner hanging parts according to an embodiment of the present invention Figure 6 ;

[0051] Figure 24 Schematic diagram of the internal corner node of the formwork according to an embodiment of the present invention;

[0052] Figure 25 Schematic diagram of the external corner node of the formwork according to an embodiment of the present invention;

[0053] In the figure: 1, keel; 11, horizontal keel; 12, vertical keel; 2, layered baffle; 21, baffle opening and closing section; 211, rotating shaft; 22, baffle fixing section; 221, rotating shaft hole; 23, connecting block; 24, baffle notch; 3, limiting protrusion; 31, limiting protrusion A; 32, limiting protrusion B; 4, formwork; 41, decorative formwork; 411, substrate; 4111, protrusion; 412, decorative layer; 42, non - decorative formwork; 5, lightweight concrete; 6, flat hanging part; 61, bottom plate; 62, supporting plate; 621, L - shaped supporting plate; 622, T - shaped supporting plate; 623, dovetail - shaped supporting plate; 624, Y - shaped supporting plate; 63, bayonet; 71, buffer gasket; 72, heat - insulating gasket; 73, sealant; 74, waterproof and breathable film; 75, connecting nail; 8, internal and external corner hanging part; 81, inner plate; 811, right inner plate; 812, left inner plate; 82, connecting plate; 83, outer plate; 831, right outer plate; 832, left outer plate; 9, door and window opening. Detailed implementation manners

[0054] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art belong to the protection scope of the present invention.

[0055] As Figures 1 - 9 shown, the lightweight concrete grouting method includes the following steps:

[0056] S1. Assemble the keel 1 into a framework;

[0057] S2. Install the layered baffle 2 and the limiting protrusion 3 inside the framework. The layered baffle 2 includes a baffle opening and closing section 21 and a baffle fixing section 22. The baffle opening and closing section 21 can rotate and open / close along the rotating shaft 211, and the limiting protrusion 3 can limit the rotation angle of the baffle opening and closing section 21; Further, when the baffle opening and closing section 21 is closed, it is parallel to the baffle fixing section 22; The rotating shaft 211 is located in the middle of the baffle opening and closing section 21 (as Figure 3 ,5 ), or one end (such as Figure 4 ); According to the different wall heights, the number of the layered baffles 2 can be one or more (such as Figure 7 ); There can be various forms of the positional relationship between the baffle opening / closing section 21 and the baffle fixed section 22 (such as Figures 3 - 6 ); The dotted line in the figure is the angle trajectory where the baffle opening / closing section 21 can rotate; At the place blocked by components (such as the vertical keel 12), a baffle notch 24 can be set so that the baffle notch 24 is stuck on the component; For Figure 4 ), there is only one type of limit protrusion 3; For Figure 3 , 5 , as shown in 6, the limit protrusion 3 includes a limit protrusion A31 and a limit protrusion B32. The limit protrusion A limits the closing angle of the baffle opening / closing section 21, and the limit protrusion B32 limits the opening angle of the baffle opening / closing section 21;

[0058] S3. Install the formwork 4 outside the framework to form a formwork shell;

[0059] S4. Pour lightweight concrete 5 into the formwork shell. The lightweight concrete 5 is poured from above the baffle opening / closing section 21 through the baffle opening / closing section 21 into the lower part of the baffle opening / closing section 21. When the formwork shell below the baffle opening / closing section 21 is filled with the lightweight concrete 5, the baffle opening / closing section 21 closes due to the pressure of the lightweight concrete from above the baffle opening / closing section 21 and / or the buoyancy of the lightweight concrete from below the baffle opening / closing section 21;

[0060] S5. Continue to pour lightweight concrete 5 into the formwork shell. The lightweight concrete 5 accumulates on the upper layer of the layered baffle 2 with the baffle opening / closing section 21 closed until the formwork shell is filled.

[0061] Such as Figures 1 - 11 , in a preferred embodiment of the present invention, the layered baffle 2 is laid on the horizontal keel 11. Further, the layered baffle 2 can be connected to the horizontal keel 11 by connecting nails, so that the layered baffle 2 acts as a tie member, thereby eliminating the layout of tie members in the wall body and strengthening the structural strength of the framework; The connecting nails can be ordinary screws, self-tapping screws, blind rivets; Of course, the layered baffle 2 can also not be laid on the horizontal keel 11, such as by tying and anchoring the layered baffle 2 to the horizontal keel 11 and the vertical keel 12; To obtain good thermal performance of the wall, the layered baffle 2 is preferably made of a material with a lower thermal conductivity, such as anti-corrosion wood, glass fiber reinforced plastic, etc.

[0062] Such as Figure 8 , in a preferred embodiment of the present invention, the baffle fixed section 22 is provided with a rotating shaft hole 221, and both ends of the rotating shaft 211 are rotatably connected to the rotating shaft hole 221.

[0063] Such as Figure 9As shown, in a preferred embodiment of the present invention, the rotating shaft 211 is mounted on the horizontal keel 11, and the rotating shaft 211 is located between the two baffle fixing sections 22. Further, the baffle fixing sections 22 on both sides of the rotating shaft 211 are fixed by the connecting block 23, and the connecting block 23 is located above the rotating shaft 211

[0064] As Figures 10 - 17 As shown, in a preferred embodiment of the present invention, the template 4 includes a decorative template 41. The decorative template 41 includes a substrate 411, and a decorative layer 412 is provided on the outer side of the substrate 411. The substrate 411 is connected to the keel 1 through the flat hanging member 6. Further, the substrate 411 is one of calcium silicate board, fiber cement board, and magnesium oxysulfate board; there are many choices for the decorative layer 412 in the prior art, such as paint-like materials like real stone paint, imitation stone paint, latex paint, and texture paint, or ceramic thin plates and metal plates can also be used as the decorative layer 412. Both sides of the wall can be the decorative template 41, or one side can be the decorative template 41 and the other side can be the non-decorative template 42. The non-decorative template 42 can be directly connected to the keel 1 by connecting nails 75 or other means.

[0065] As Figures 10 - 17 As shown, in a preferred embodiment of the present invention, protrusions 4111 are provided on the upper side and / or the lower side of the substrate 411. A bayonet 63 is formed between the bottom plate 61 and the support plate 62 of the flat hanging member 6, and the protrusions 4111 are embedded in the bayonet 63. The support plate 62 is one of the L-shaped support plate 621, T-shaped support plate 622, dovetail-shaped support plate 623, and Y-shaped support plate 624. The bottom plate 61 and the keel 1 can be connected by connecting nails 75

[0066] As Figures 10 - 17 As shown, in a preferred embodiment of the present invention, the upper and lower adjacent decorative templates 41 are spliced by tongue-and-groove joints. The tongue-and-groove joint of the upper decorative template 41 covers the tongue-and-groove joint of the lower decorative template 41. A buffer gasket 71 is provided between the substrate 411 and the bottom plate 61, a heat insulation gasket 72 is provided between the bottom plate 61 and the keel 1, a sealant 73 is filled at the splicing joint of the adjacent decorative templates 41, a waterproof and breathable film 74 is pasted at the splicing joint of the adjacent decorative templates 41, and the waterproof and breathable film 74 is pasted on the back side of the substrate 411.

[0067] As Figures 18 - 25As shown, in a preferred embodiment of the present invention, at the internal and external corners of the formwork, the templates 4 intersecting vertically are connected to the keel 1 through internal and external corner hangers 8. The internal and external corner hangers 8 include an inner plate 81, and the inner plate 81 is connected to an outer plate 83 through a connecting plate 82. The inner plate 81 includes a right inner plate 811 and a left inner plate 812 that are not at the same height, and the outer plate 83 includes a right outer plate 831 and a left outer plate 832 that are not at the same height. The right inner plate 811 and the left outer plate 832 are at the same height, and the left inner plate 812 and the right outer plate 831 are at the same height. Further, the number of the right inner plate 811, the left inner plate 812, the right outer plate 831, and the left outer plate 832 is one (as shown in Figure 18 ), or multiple (as shown in Figures 19 - 22 ); the right inner plate 811 is parallel to the right outer plate 831, the left inner plate 812 is parallel to the left outer plate 832, and the right inner plate 811 is perpendicular to the left inner plate 812.

[0068] As shown in Figures 18 - 25 , in a preferred embodiment of the present invention, at the internal corner of the formwork (as shown in Figure 24 ): the outer plate 83 is fixed to the keel 1 through a connecting nail 75, the inner plate 81 is connected to the notch of the template 4, a buffer gasket 71 is provided between the outer plate 83 and the template 4, and a heat insulation gasket 72 is provided between the outer plate 83 and the keel 1; at the external corner of the formwork (as shown in Figure 25 ): the inner plate 81 is fixed to the keel 1 through a connecting nail 75, the outer plate 83 is connected to the notch of the template 4, a buffer gasket 71 is provided between the inner plate 81 and the template 4, and a heat insulation gasket 72 is provided between the inner plate 81 and the keel 1.

[0069] In summary, the present invention can effectively reduce the extrusion of concrete on the template. On this basis, the integration of the template and the decorative board can be realized, thereby improving the construction accuracy and construction speed of the lightweight concrete wall.

[0070] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "high", "low", "horizontal", "vertical", "top", "middle", "bottom", "inner", "outer", "circumference", "horizontal", "vertical", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0071] In the present invention, unless otherwise clearly defined and limited, the terms "mounted", "connected", "coupled", "fixed", "provided with", etc. shall be construed broadly. For example, it may be a fixed connection, or a movable connection, a rotational connection, a sliding connection, a detachable connection, or integrated; it may be a mechanical connection, or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium; it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention may be understood according to specific circumstances.

[0072] Although the invention has been illustrated and described with reference to specific embodiments, it will be appreciated that many other changes and modifications may be made without departing from the spirit and scope of the invention. Accordingly, it is intended that all such changes and modifications that fall within the scope of the invention be included in the appended claims.

Claims

1. A method for grouting lightweight concrete, characterized in that, It includes the following steps: S1. Assemble the keel (1) into a framework; S2. Install a layered baffle (2) and a limit projection (3) inside the framework. The layered baffle (2) includes a baffle opening / closing section (21) and a baffle fixing section (22). The baffle opening / closing section (21) can rotate and open / close along a rotating shaft (211), and the limit projection (3) can limit the rotation angle of the baffle opening / closing section (21); S3. Install a template (4) outside the framework to form a formwork shell; S4. Pour lightweight concrete (5) into the formwork shell. The lightweight concrete (5) is poured from above the baffle opening / closing section (21) through the baffle opening / closing section (21) into the area below the baffle opening / closing section (21). When the formwork shell below the baffle opening / closing section (21) is filled with the lightweight concrete (5), the baffle opening / closing section (21) closes due to the pressure of the lightweight concrete above the baffle opening / closing section (21) and / or the buoyancy of the lightweight concrete below the baffle opening / closing section (21); S5. Continue to pour lightweight concrete (5) into the formwork shell, and the lightweight concrete (5) accumulates on the upper layer of the layered baffle (2) with the baffle opening / closing section (21) already closed.

2. The light concrete grouting method according to claim 1, characterized in that, The layered baffle (2) is placed on the transverse keel (11).

3. The light concrete grouting method according to claim 2, characterized in that, The baffle fixing section (22) is provided with a rotating shaft hole (221), and both ends of the rotating shaft (211) are rotatably connected to the rotating shaft hole (221).

4. The lightweight concrete grouting method according to claim 2, characterized in that The rotating shaft (211) is placed on the transverse keel (11), and the rotating shaft (211) is located between two baffle fixing sections (22).

5. The lightweight concrete grouting method according to claim 1, characterized in that, The template (4) includes a decorative template (41). The decorative template (41) includes a base plate (411), and a decorative layer (412) is provided on the outer side of the base plate (411). The base plate (411) is connected to the keel (1) through a flat hanging member (6).

6. The lightweight concrete grouting method according to claim 5, characterized in that, Protrusions (4111) are provided on the upper side and / or the lower side of the base plate (411). A bayonet (63) is formed between the bottom plate (61) and the supporting plate (62) of the flat hanging member (6). The protrusions (4111) are embedded in the bayonet (63), and the supporting plate (62) is one of an L-shaped supporting plate (621), a T-shaped supporting plate (622), a dovetail-shaped supporting plate (623), and a Y-shaped supporting plate (624).

7. The light concrete grouting method according to claim 6, characterized in that, The adjacent upper and lower decorative templates (41) are spliced by tongue-and-groove joints. The tongue-and-groove joint of the decorative template (41) located above covers the tongue-and-groove joint of the decorative template (41) located below. A buffer gasket (71) is provided between the base plate (411) and the bottom plate (61), a heat insulation gasket (72) is provided between the bottom plate (61) and the keel (1), a sealant (73) is filled at the splicing joint of the adjacent decorative templates (41), and a waterproof and breathable film (74) is pasted at the splicing joint of the adjacent decorative templates (41). The waterproof and breathable film (74) is pasted on the back side of the base plate (411).

8. The light concrete grouting method according to claim 1, characterized in that, At the internal and external corners of the formwork, the templates (4) that intersect perpendicularly are connected to the keel (1) through internal and external corner hanging parts (8). The internal and external corner hanging parts (8) include an inner plate (81), and the inner plate (81) is connected to an outer plate (83) through a connecting plate (82). The inner plate (81) includes a right inner plate (811) and a left inner plate (812) that are not at the same height. The outer plate (83) includes a right outer plate (831) and a left outer plate (832) that are not at the same height. The right inner plate (811) and the left outer plate (832) are at the same height, and the left inner plate (812) and the right outer plate (831) are at the same height.

9. The lightweight concrete grouting method according to claim 8, characterized in that, At the internal corner of the formwork: the outer plate (83) is fixed to the keel (1) through connecting nails (75), the inner plate (81) is connected to the notch of the template (4), a buffer gasket (71) is provided between the outer plate (83) and the template (4), and a heat insulation gasket (72) is provided between the outer plate (83) and the keel (1); at the external corner of the formwork: the inner plate (81) is fixed to the keel (1) through connecting nails (75), the outer plate (83) is connected to the notch of the template (4), a buffer gasket (71) is provided between the inner plate (81) and the template (4), and a heat insulation gasket (72) is provided between the inner plate (81) and the keel (1).

10. A lightweight concrete wall, characterized in that, The wall body is manufactured by using the light concrete grouting method according to any one of claims 1 to 9.

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