Composite infilled wall and preparation method thereof
By using grouting holes and grouting reinforcement grooves in the filling walls of frame buildings combined with high flow, high strength and light grouting bonding materials, the problems of easy falling off, cumbersome construction, and high cost in the existing technology are solved, and the close combination of aerated concrete strips and insulation materials are achieved and integrated energy-saving and insulation assembly is achieved.
Patent Information
- Application Number
- CN202510103035.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-22
- Publication Date
- 2025-04-25
AI Technical Summary
The prior art is difficult to achieve integrated energy-saving and thermal insulation assembly in the filling walls of frame buildings, and there are problems such as excessive thickness, high cost, inconvenient construction and easy shedding.
By setting grouting holes and grouting reinforcement grooves on the aerated concrete strips and insulation materials, the cavity problem is solved by filling and condensed with high flow, high-strength, light grouting bonding material to form a closely-bonded composite filling wall.
The close combination of aerated concrete strips and insulation materials is achieved, which avoids cavity phenomena, improves construction convenience and safety, reduces costs, and enhances the overall performance of the filling wall.
Smart Images
Figure CN119877730A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of filling walls, and in particular to a composite filling wall and a preparation method thereof. Background Art
[0002] With the development of society, buildings have gradually transformed from traditional construction. Prefabricated construction has been the mainstream form of construction in various places in recent years. In addition, with the implementation of the national dual carbon strategy, building energy conservation is a top priority in the process of achieving carbon peak. The most critical part of building energy conservation is the external wall insulation project. The external wall insulation project is a building entity formed by combining, assembling, constructing or installing the external wall insulation system on the outer surface of the exterior wall. It has two significant advantages of insulation and heat insulation and is widely used in existing buildings. How to combine insulation and assembly is a difficult problem that needs to be solved urgently.
[0003] At present, traditional prefabricated shear walls can combine insulation with prefabricated shear walls by using built-in insulation, but most public buildings use frame structures, especially emerging rural buildings, which have gradually adopted frame buildings. There is currently no good solution for how to achieve energy-saving and insulation integrated assembly of the filling wall of frame buildings. Some existing systems on the market, such as aerated strip board insulation, are copied from the shear wall insulation method, which has problems such as excessive thickness, high cost, and inconvenient construction. Some systems are assembled with insulation materials and then sprayed and leveled, which also have problems such as cumbersome construction and high cost.
[0004] In recent years, products combining aerated slats and thermal insulation boards have also appeared on the market. However, since the production process uses the traditional bonding method, it is impossible to achieve a cavity-free construction system, which may cause phenomena such as falling off, burying hidden dangers in the use of future buildings. Therefore, it is of great significance to study a composite filling wall made of cavity-free aerated concrete slats and thermal insulation materials. Summary of the invention
[0005] The object of the present invention is to provide a composite filling wall and a preparation method thereof in order to overcome the deficiencies of the prior art.
[0006] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions:
[0007] The present invention provides a method for preparing a composite filling wall, comprising the following steps:
[0008] 1) Set grouting holes on the aerated concrete slabs; set grouting reinforcement grooves on the insulation materials;
[0009] 2) The aerated concrete slats and the thermal insulation materials are repeatedly placed in sequence, and support members are provided in the grouting space between the aerated concrete slats and the thermal insulation materials;
[0010] 3) Insert the connector into the grouting reinforcement groove of the thermal insulation material and the grouting hole of the aerated concrete strip, and the end of the connector goes deep into the grouting reinforcement groove and the grouting hole;
[0011] 4) Seal the bottom and side edges of the grouting space between the aerated concrete slab and the insulation material;
[0012] 5) The grouting space, grouting hole and grouting reinforcement groove are filled with grouting adhesive to solidify and fix them to obtain a composite filling wall.
[0013] Preferably, the grouting holes in step 1) are arranged on two or more of the upper, lower, left and right sides of the aerated concrete slats, and the distance between the grouting holes and the edge of the aerated concrete slats is 20 to 50 mm; the grouting reinforcement grooves are arranged on two or more of the upper, lower, left and right sides of the thermal insulation material, and the distance between the grouting reinforcement grooves and the edge of the thermal insulation material is 20 to 50 mm.
[0014] Preferably, the dimensions of the grouting hole and the grouting reinforcement groove in step 1) are independently: the notch is 10 to 30 mm, and the inner diameter is 15 to 40 mm;
[0015] The thermal insulation material is an organic thermal insulation material, and the organic thermal insulation material comprises a graphite extruded board and / or a polystyrene board.
[0016] Preferably, the support member in step 2) is square or cylindrical, the thickness of the square support member is 15-25 mm, the length is 10-20 mm, and the width is 10-20 mm; the diameter of the cylindrical support member is 10-20 mm.
[0017] Preferably, the connectors in step 3) are arranged in a staggered manner, with the first connector being 150 mm above and below the corner, and then a connector being arranged at intervals of 300 to 500 mm.
[0018] Preferably, the sealing material in step 4) is an elastic material, and the thickness of the sealing material is greater than or equal to the grouting space between the aerated concrete slab and the thermal insulation material.
[0019] Preferably, the grouting binder in step 5) is obtained by mixing a hydroxypropyl methylcellulose mixture and water; the mass ratio of the hydroxypropyl methylcellulose mixture to water is 75-80:20-25; the hydroxypropyl methylcellulose mixture comprises the following components in mass fractions: 5 parts of sulphoaluminium cement, 15-35 parts of silicate cement, 55-100 parts of sand, 5-10 parts of fly ash, 2-5 parts of silica fume, 0.05-0.2 parts of water reducing agent, 0.5-2 parts of redispersible latex powder, 0.05-0.1 parts of tartaric acid, and 0.05-0.2 parts of hydroxypropyl methylcellulose ether.
[0020] Preferably, the particle size of the sand is 20-120 meshes, wherein the mass ratio of 20-40 mesh sand, 40-70 mesh sand and 70-120 mesh sand is 15-25:20-35:20-40.
[0021] The invention also provides a composite filling wall prepared by the preparation method.
[0022] The beneficial effects of the present invention include the following:
[0023] The grouting adhesive of the present invention is a high-flow, high-strength and lightweight grouting adhesive, which fills the grouting space between the aerated concrete strip and the thermal insulation material, the grouting holes of the aerated concrete strip, and the grouting reinforcement grooves of the thermal insulation material; after the grouting adhesive is solidified and fixed, the grouting adhesive uses its own bonding force and the mechanical locking force with the grouting holes and the grouting reinforcement grooves to form a tightly combined, cavity-free whole with the aerated concrete strip and the thermal insulation material, thereby solving the problems of easy falling off, complicated construction, high cost and large thickness of the assembled thermal insulation filling wall in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 Schematic diagram of the grouting holes of the aerated concrete slab and the grouting reinforcement grooves of the thermal insulation material in Example 1, wherein 1 is the left side, 2 is the bottom side, and 3 is the right side;
[0025] Figure 2 This is a schematic diagram of a fixing frame for fixing aerated concrete slabs and thermal insulation materials in Example 1. DETAILED DESCRIPTION
[0026] The present invention provides a method for preparing a composite filling wall, comprising the following steps:
[0027] 1) Set grouting holes on the aerated concrete slabs; set grouting reinforcement grooves on the insulation materials;
[0028] 2) The aerated concrete slats and the thermal insulation materials are repeatedly placed in sequence, and support members are provided in the grouting space between the aerated concrete slats and the thermal insulation materials;
[0029] 3) Insert the connector into the grouting reinforcement groove of the thermal insulation material and the grouting hole of the aerated concrete strip, and the end of the connector goes deep into the grouting reinforcement groove and the grouting hole;
[0030] 4) Seal the bottom and side edges of the grouting space between the aerated concrete slab and the insulation material;
[0031] 5) The grouting space, grouting hole and grouting reinforcement groove are filled with grouting adhesive to solidify and fix them to obtain a composite filling wall.
[0032] In the present invention, the grouting holes described in step 1) are preferably arranged on two or more sides of the upper side, lower side, left side and right side of the aerated concrete slats, and the distance between the grouting holes and the edge of the aerated concrete slats is preferably 20-50 mm, more preferably 25-45 mm, and more preferably 30-40 mm; the grouting reinforcement grooves are preferably arranged on two or more sides of the upper side, lower side, left side and right side of the thermal insulation material, and the distance between the grouting reinforcement grooves and the edge of the thermal insulation material is preferably 20-50 mm, more preferably 25-45 mm, and more preferably 30-40 mm.
[0033] In the present invention, the sizes of the grouting hole and the grouting reinforcement groove in step 1) are independently: the notch is preferably 10 to 30 mm, more preferably 15 to 25 mm, more preferably 20 mm, and the inner diameter is preferably 15 to 40 mm, more preferably 20 to 35 mm, more preferably 25 to 30 mm;
[0034] The thermal insulation material is preferably an organic thermal insulation material, and the organic thermal insulation material preferably comprises graphite extruded board and / or polystyrene board.
[0035] In the present invention, the support member in step 2) is preferably square or cylindrical, the thickness of the square support member is preferably 15-25 mm, more preferably 18-22 mm, more preferably 20 mm, the length is preferably 10-20 mm, more preferably 12-18 mm, more preferably 15-16 mm, the width is preferably 10-20 mm, more preferably 12-18 mm, more preferably 15-16 mm; the diameter of the cylindrical support member is preferably 10-20 mm, more preferably 12-18 mm, more preferably 15-16 mm.
[0036] In the present invention, step 2) repeatedly places aerated concrete slats and thermal insulation materials on a fixing frame in sequence, and a plurality of aerated concrete slats and thermal insulation materials are placed according to the size of the fixing frame, and the fixing frame is used to combine and fix the aerated concrete slats and thermal insulation materials.
[0037] In the present invention, the connectors in step 3) are arranged in a staggered manner, and the first connector is preferably 150 mm above and below the corner, and then preferably a connector is arranged every 300 to 500 mm, more preferably at an interval of 350 to 450 mm, and more preferably at an interval of 400 mm.
[0038] In the present invention, connectors are inserted into the positions opposite to the grouting reinforcement groove and the grouting hole. The connectors are thermal insulation anchor nails. The corners are the lower left and right corners of the aerated concrete strip and the lower left and right corners of the thermal insulation material.
[0039] In the present invention, the sealing material in step 4) is preferably an elastic material, and is further preferably a rubber strip or an insulation strip, and the rubber strip is preferably an EPDM rubber strip, a natural rubber strip or a silicone rubber strip; the thickness of the sealing material is preferably greater than or equal to the grouting space between the aerated concrete strip and the insulation material, and the sealing needs to be tight.
[0040] In the present invention, after the plugging in step 4), the fixing frame is preferably adjusted, the aerated concrete slab and the thermal insulation material are fastened, and then the grouting adhesive is poured in.
[0041] In the present invention, the grouting binder in step 5) is preferably obtained by mixing a hydroxypropyl methylcellulose mixture and water; the mass ratio of the hydroxypropyl methylcellulose mixture to water is preferably 75-80:20-25, more preferably 76-79:21-24, and more preferably 77-78:22-23.
[0042] In the hydroxypropyl methylcellulose mixture of the present invention, by weight, sulphoaluminium cement is preferably 5 parts, silicate cement is preferably 15-35 parts, more preferably 20-30 parts, more preferably 25 parts; sand is preferably 55-100 parts, more preferably 60-90 parts; fly ash is preferably 5-10 parts, more preferably 6-9 parts, more preferably 7-8 parts; silica fume is preferably 2-5 parts, more preferably 3-4 parts, more preferably 3.5 parts; water reducer is preferably 0.05-0.2 parts, more preferably 0.1-0.15 parts; redispersible latex powder is preferably 0.5-2 parts, more preferably 1-1.5 parts; tartaric acid is preferably 0.05-0.1 parts, more preferably 0.06-0.09 parts, more preferably 0.07-0.08 parts; hydroxypropyl methylcellulose ether is preferably 0.05-0.2 parts, more preferably 0.08-0.16 parts, more preferably 0.1-0.13 parts.
[0043] In the present invention, the particle size of the sand is preferably 20-120 mesh, wherein the mass ratio of 20-40 mesh sand (including 20 mesh sand and 40 mesh sand), 40-70 mesh sand (excluding 40 mesh sand and including 70 mesh sand) and 70-120 mesh sand (excluding 70 mesh sand and including 120 mesh sand) is preferably 15-25:20-35:20-40, further preferably 18-22:25-30:25-35, and more preferably 20:28:30.
[0044] In the present invention, after the grouting binder is solidified and fixed, the grouting binder uses its own bonding force and the mechanical locking force with the grouting hole and the grouting reinforcement groove to form a tightly combined, cavity-free whole with the aerated concrete strip board and the thermal insulation material. After removing the fixing device (conventional reinforcement device) and the fixing frame (the supporting member and the connecting member are not removed), a composite filling wall is obtained.
[0045] The invention also provides a composite filling wall prepared by the preparation method.
[0046] The technical solutions provided by the present invention are described in detail below in conjunction with the embodiments, but they should not be construed as limiting the protection scope of the present invention.
[0047] In the embodiment, the aerated concrete slats are autoclaved lightweight aerated concrete slats (ALC slats); the thermal insulation material is a graphite extruded board with a combustion grade of B1; the water reducer is a polycarboxylic acid water reducer SP-409; the redispersible latex powder is a German Wacker redispersible latex powder 5044N; and the model of the hydroxypropyl methylcellulose ether is HP-75TD.
[0048] Example 1
[0049] Grouting holes are set on the aerated concrete strips, and the grouting holes are set on the left, right and bottom of the aerated concrete strips (such as Figure 1 The distance between the grouting hole and the edge of the aerated concrete strip is 30 mm; a grouting reinforcement groove is set on the insulation material, and the grouting reinforcement groove is set on the left, right and bottom of the insulation material (as shown in FIG. Figure 1 As shown in the figure, the distance between the grouting reinforcement groove and the edge of the insulation material is 30mm; the notches of the grouting hole and the grouting reinforcement groove are both 20mm, and the internal diameters are both 30mm.
[0050] Place the aerated concrete slats and insulation materials in sequence on the fixed frame (such as Figure 2 As shown in the figure, there is a grouting adhesive between the thermal insulation material and the aerated concrete strip), the aerated concrete strip and the thermal insulation material are combined and fixed, and a square support is set in the grouting space between the aerated concrete strip and the thermal insulation material. The thickness of the square support is 20mm, the length is 15mm, and the width is 15mm; the connecting piece is inserted into the relative position of the grouting reinforcement groove of the thermal insulation material and the grouting hole of the aerated concrete strip, and the end of the connecting piece is deep into the grouting reinforcement groove and the grouting hole; the connecting pieces are arranged in a staggered manner, the first connecting piece is 150mm above and below the corner, and then a connecting piece is arranged every 400mm.
[0051] The bottom and side edges of the grouting space between the aerated concrete strips and the thermal insulation material are sealed with EPDM rubber strips, and the thickness of the sealing material is equal to the grouting space between the aerated concrete strips and the thermal insulation material; after sealing, the fixing frame is adjusted to tighten the aerated concrete strips and the thermal insulation material.
[0052] The grouting space, grouting hole and grouting reinforcement groove are filled with grouting binder. The grouting binder is a mixture of hydroxypropyl methylcellulose and water with a mass ratio of 77:23, which is evenly mixed. The hydroxypropyl methylcellulose mixture contains the following components by mass: 5 parts of sulphoaluminium cement, 25 parts of silicate cement, 20 parts of 20-40 mesh sand, 25 parts of 40-70 mesh sand, 30 parts of 70-120 mesh sand, 8 parts of fly ash, 3 parts of silica fume, 0.1 parts of water reducer, 1 part of redispersible latex powder, 0.08 parts of tartaric acid and 0.1 parts of hydroxypropyl methylcellulose ether. After the grouting binder is solidified and fixed, the grouting binder forms a tightly combined, cavity-free whole with the aerated concrete strip and the insulation material through its own bonding force and the mechanical locking force with the grouting hole and the grouting reinforcement groove. After removing the fixing device and the fixing frame, a composite filling wall is obtained.
[0053] Example 2
[0054] Grouting holes are arranged on the aerated concrete slats, and the grouting holes are arranged on the left, right and bottom of the aerated concrete slats. The distance between the grouting holes and the edge of the aerated concrete slats is 40mm. Grouting reinforcement grooves are arranged on the thermal insulation material, and the grouting reinforcement grooves are arranged on the left and right sides of the thermal insulation material. The distance between the grouting reinforcement grooves and the edge of the thermal insulation material is 40mm. The notches of the grouting holes and the grouting reinforcement grooves are both 15mm, and the internal diameters are both 20mm.
[0055] Place the aerated concrete strips and thermal insulation materials on the fixing frame in sequence repeatedly, fix the aerated concrete strips and thermal insulation materials together, set a cylindrical support piece in the grouting space between the aerated concrete strips and the thermal insulation materials, the diameter of the cylindrical support piece is 15mm; insert the connecting piece into the relative position of the grouting reinforcement groove of the thermal insulation material and the grouting hole of the aerated concrete strips, and the end of the connecting piece goes deep into the grouting reinforcement groove and the grouting hole; the connecting pieces are arranged in a staggered manner, the first connecting piece is 150mm above and below the corner, and then a connecting piece is arranged every 350mm.
[0056] The bottom and side edges of the grouting space between the aerated concrete strip and the thermal insulation material are sealed with a silicone rubber strip, and the thickness of the sealing material is greater than the grouting space between the aerated concrete strip and the thermal insulation material; after sealing, the fixing frame is adjusted to tighten the aerated concrete strip and the thermal insulation material.
[0057] The grouting space, grouting hole and grouting reinforcement groove are filled with grouting binder. The grouting binder is a mixture of hydroxypropyl methylcellulose and water with a mass ratio of 75:25, which is stirred and mixed evenly. The hydroxypropyl methylcellulose mixture contains the following components by mass: 5 parts of sulphoaluminium cement, 20 parts of silicate cement, 18 parts of 20-40 mesh sand, 30 parts of 40-70 mesh sand, 25 parts of 70-120 mesh sand, 9 parts of fly ash, 2 parts of silica fume, 0.08 parts of water reducer, 1.5 parts of redispersible latex powder, 0.1 parts of tartaric acid, and 0.16 parts of hydroxypropyl methylcellulose ether. After the grouting binder is solidified and fixed, the grouting binder forms a tightly combined, cavity-free whole with the aerated concrete strip and the insulation material through its own bonding force and the mechanical locking force with the grouting hole and the grouting reinforcement groove. After removing the fixing device and the fixing frame, a composite filling wall is obtained.
[0058] Example 3
[0059] Grouting holes are arranged on the aerated concrete slats, and the grouting holes are arranged on the left, right, top and bottom of the aerated concrete slats. The distance between the grouting holes and the edge of the aerated concrete slats is 25mm. Grouting reinforcement grooves are arranged on the thermal insulation material, and the grouting reinforcement grooves are arranged on the left, right, top and bottom of the thermal insulation material. The distance between the grouting reinforcement grooves and the edge of the thermal insulation material is 25mm. The notches of the grouting holes and the grouting reinforcement grooves are both 25mm, and the internal diameters are both 25mm.
[0060] Place the aerated concrete strips and thermal insulation materials on the fixed frame in sequence repeatedly, combine and fix the aerated concrete strips and thermal insulation materials, set square supports in the grouting space between the aerated concrete strips and the thermal insulation materials, the thickness of the square supports is 18mm, the length is 18mm, and the width is 16mm; insert the connectors at the relative positions of the grouting reinforcement grooves of the thermal insulation materials and the grouting holes of the aerated concrete strips, and the ends of the connectors penetrate into the grouting reinforcement grooves and the grouting holes; the connectors are arranged in a staggered manner, the first connector is 150mm above and below the corners, and then a connector is arranged every 450mm.
[0061] The bottom and side edges of the grouting space between the aerated concrete strips and the thermal insulation material are sealed with EPDM rubber strips, and the thickness of the sealing material is equal to the grouting space between the aerated concrete strips and the thermal insulation material; after sealing, the fixing frame is adjusted to tighten the aerated concrete strips and the thermal insulation material.
[0062] The grouting space, grouting hole and grouting reinforcement groove are filled with grouting binder. The grouting binder is a mixture of hydroxypropyl methylcellulose and water with a mass ratio of 80:20, which is stirred and mixed evenly. The hydroxypropyl methylcellulose mixture contains the following components by mass: 5 parts of sulphoaluminium cement, 30 parts of silicate cement, 22 parts of 20-40 mesh sand, 28 parts of 40-70 mesh sand, 35 parts of 70-120 mesh sand, 6 parts of fly ash, 4 parts of silica fume, 0.15 parts of water reducer, 1 part of redispersible latex powder, 0.06 parts of tartaric acid and 0.08 parts of hydroxypropyl methylcellulose ether. After the grouting binder is solidified and fixed, the grouting binder forms a tightly combined, cavity-free whole with the aerated concrete strip and the insulation material through its own bonding force and the mechanical locking force with the grouting hole and the grouting reinforcement groove. After removing the fixing device and the fixing frame, a composite filling wall is obtained.
[0063] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.
Claims
1. A method for preparing a composite filling wall, characterized in that: The following steps are included: 1) Set grouting holes on the aerated concrete slabs; set grouting reinforcement grooves on the insulation materials; 2) The aerated concrete slats and the thermal insulation materials are repeatedly placed in sequence, and support members are provided in the grouting space between the aerated concrete slats and the thermal insulation materials; 3) Insert the connector into the grouting reinforcement groove of the thermal insulation material and the grouting hole of the aerated concrete strip, and the end of the connector goes deep into the grouting reinforcement groove and the grouting hole; 4) Seal the bottom and side edges of the grouting space between the aerated concrete slab and the insulation material; 5) The grouting space, grouting hole and grouting reinforcement groove are filled with grouting adhesive to solidify and fix them to obtain a composite filling wall.
2. The preparation method according to claim 1, characterized in that: Step 1) The grouting holes are arranged on two or more sides of the upper side, lower side, left side and right side of the aerated concrete slat, and the distance between the grouting holes and the edge of the aerated concrete slat is 20 to 50 mm; the grouting reinforcement grooves are arranged on two or more sides of the upper side, lower side, left side and right side of the thermal insulation material, and the distance between the grouting reinforcement grooves and the edge of the thermal insulation material is 20 to 50 mm.
3. The preparation method according to claim 1 or 2, characterized in that: Step 1) the dimensions of the grouting hole and the grouting reinforcement groove are independently: the notch is 10 to 30 mm, and the inner diameter is 15 to 40 mm; The thermal insulation material is an organic thermal insulation material, and the organic thermal insulation material comprises a graphite extruded board and / or a polystyrene board.
4. The preparation method according to claim 3, characterized in that: Step 2) The support member is square or cylindrical. The thickness of the square support member is 15-25 mm, the length is 10-20 mm, and the width is 10-20 mm; the diameter of the cylindrical support member is 10-20 mm.
5. The preparation method according to claim 4, characterized in that: Step 3) The connectors are arranged in a staggered manner, with the first connector being 150 mm above and below the corner, and then a connector is arranged every 300 to 500 mm.
6. The preparation method according to claim 4 or 5, characterized in that: Step 4) The sealing material is an elastic material, and the thickness of the sealing material is greater than or equal to the grouting space between the aerated concrete slab and the thermal insulation material.
7. The preparation method according to claim 6, characterized in that: Step 5) The grouting binder is obtained by mixing a hydroxypropyl methylcellulose mixture and water; the mass ratio of the hydroxypropyl methylcellulose mixture to water is 75-80:20-25; the hydroxypropyl methylcellulose mixture contains the following components in mass fractions: 5 parts of sulphoaluminium cement, 15-35 parts of silicate cement, 55-100 parts of sand, 5-10 parts of fly ash, 2-5 parts of silica fume, 0.05-0.2 parts of water reducing agent, 0.5-2 parts of redispersible latex powder, 0.05-0.1 parts of tartaric acid, and 0.05-0.2 parts of hydroxypropyl methylcellulose ether.
8. The preparation method according to claim 7, characterized in that: The particle size of the sand is 20-120 meshes, wherein the mass ratio of 20-40 mesh sand, 40-70 mesh sand and 70-120 mesh sand is 15-25:20-35:20-40.
9. The composite filling wall prepared by the preparation method according to any one of claims 1 to 8.