CN111923313B - Preparation method of building prefabricated composite building block - Google Patents
Preparation method of building prefabricated composite building block Download PDFInfo
- Publication number
- CN111923313B CN111923313B CN202010821772.7A CN202010821772A CN111923313B CN 111923313 B CN111923313 B CN 111923313B CN 202010821772 A CN202010821772 A CN 202010821772A CN 111923313 B CN111923313 B CN 111923313B
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- China
- Prior art keywords
- building
- block
- prefabricated
- polystyrene
- building block
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/008—Producing shaped prefabricated articles from the material made from two or more materials having different characteristics or properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/40—Moulds; Cores; Mandrels characterised by means for modifying the properties of the moulding material
- B28B7/42—Moulds; Cores; Mandrels characterised by means for modifying the properties of the moulding material for heating or cooling, e.g. steam jackets, by means of treating agents acting directly on the moulding material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/3415—Heating or cooling
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C1/00—Building elements of block or other shape for the construction of parts of buildings
- E04C1/40—Building elements of block or other shape for the construction of parts of buildings built-up from parts of different materials, e.g. composed of layers of different materials or stones with filling material or with insulating inserts
- E04C1/41—Building elements of block or other shape for the construction of parts of buildings built-up from parts of different materials, e.g. composed of layers of different materials or stones with filling material or with insulating inserts composed of insulating material and load-bearing concrete, stone or stone-like material
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Laminated Bodies (AREA)
- Moulds, Cores, Or Mandrels (AREA)
Abstract
A method for preparing a building prefabricated composite block comprises the following steps: (1) Preparing and molding a building prefabricated block with a middle cavity, and placing the building prefabricated block on a filling platform; (2) Placing a hollow heating mould with a regular shape inside the building prefabricated building block; (3) Filling polystyrene foaming materials between the heating mould and the building prefabricated building block; (4) arranging a sealing pressure plate above the building prefabricated building block; (5) Heating the hollow heating mould, and foaming and adhering the polystyrene foaming material to the inner wall of the building prefabricated building block; (6) And (4) taking out the hollow heating mould after cooling, and filling the hollow heating mould with polystyrene material blocks to form the building prefabricated composite building block. The prefabricated building block has the advantages of light weight, good thermal property, good mechanical property and low comprehensive cost.
Description
Technical Field
The invention relates to a preparation method of a concrete product, in particular to a preparation method of a building prefabricated composite building block prepared from aerated concrete.
Background
Nowadays, building energy conservation becomes the main melody of current buildings, and research, development and application of novel energy-saving wall materials are important development directions of building wall materials. Along with the aggravation of the world energy crisis and the promotion of building energy conservation, the development and application of building heat-insulating materials are more and more emphasized by countries in the world, and novel heat-insulating materials are continuously emerging.
The energy-saving performance and the fireproof safety performance of the building wall material become important indexes in the field of building engineering in China. The concrete composite heat-insulating block is a heat-insulating block compounded by using light aggregate concrete or common concrete hollow blocks as base materials and adopting high-efficiency heat-insulating materials such as polystyrene materials, furnace slag, rice husks, expanded perlite, foamed heat-insulating materials and the like to fill holes of the hollow blocks. The concrete composite heat-insulating building block has the advantages of good thermal performance, fire resistance, good mechanical property, convenient construction, low comprehensive cost, less common quality problems, durability, same service life with a building, easy factory building and production, waste utilization and the like, and is widely applied to many areas of China in recent years.
From the viewpoint of the material and variety of the building heat-insulating material, the research on the heat-insulating material taking polystyrene as the main raw material is relatively extensive at home and abroad. The adoption of composite modes such as inserting polystyrene heat-insulating boards in the holes of the building blocks is an effective way for improving the thermal performance of the concrete composite heat-insulating building blocks. However, since the block holes have different shapes, the polystyrene block is difficult to be prepared in a shape completely identical to the block holes, so that the polystyrene plate cannot be tightly combined after being inserted into the block holes, and the insulation effect is reduced due to the low bonding strength between the polystyrene block and the block.
In the prior art, CN101032828A and CN103726606A propose a production method of polystyrene composite building blocks, which fills polystyrene foam materials into building block holes, and then introduces water vapor to foam the polystyrene foam materials, so that the polystyrene foam materials are foamed and bonded on the inner walls of the building block holes, and the polystyrene foam materials and the building block holes are tightly combined. However, this method requires the introduction of high pressure steam, which easily causes the block to crack. CN102431079A proposes a method for producing polystyrene composite block, which discharges steam by providing a steam outlet to avoid cracking of the block, but it needs to provide a steam inlet on the upper surface of the block hole, and does not seal when polystyrene is foamed, so that polystyrene foam will overflow from the block hole through the steam inlet when expanded, which affects the foaming quality. CN103042649A proposes a method for filling polystyrene foam bead material into a hollow brick, which does not foam by water vapor, but foam the polystyrene foam bead material by arranging heating plates on the upper and lower surfaces of the hole of the hollow brick, however, since polystyrene is a heat insulating material, the temperature of the heating plates is difficult to be transferred to the middle position of the hole of the hollow brick, so that the foaming quality of the polystyrene foam bead material in the middle area of the hollow brick is not good, and the bonding effect between the middle area and the hole of the block is affected.
Disclosure of Invention
The invention provides a preparation method of a building prefabricated composite building block, which can solve the problems in the prior art.
As one aspect of the present invention, there is provided a method for manufacturing a prefabricated composite building block for construction, comprising: (1) Preparing and molding a building prefabricated building block with a middle cavity, and placing the building prefabricated building block on a filling platform; (2) Placing a hollow heating mould with a regular shape in the building prefabricated building block; (3) Filling polystyrene foaming material between the heating mould and the building block; (4) arranging a sealing pressure plate above the building prefabricated building block; (5) Heating the heating mould in the regular shape, and foaming and adhering the polystyrene foaming material to the inner wall of the building prefabricated building block; (6) And (3) taking out the hollow heating mould after cooling, and filling the hollow heating mould with the polystyrene material blocks in regular shapes to form the prefabricated building block.
Further, the building prefabricated building block is prepared from aerated concrete.
Furthermore, the inner surface of the middle cavity of the building prefabricated building block is in a curve shape.
Further, the hollow heating mould is a metal mould, and the inner surface of the hollow heating mould is provided with an electric heating wire.
Further, the regular shape is a quadrangle or a circle.
Further, the hollow heating mold includes a first portion and a second portion; the first part is positioned above the first part, and the shortest distance between the outer edge of the first part and the inner side of the middle cavity of the building prefabricated building block is smaller than a distance threshold value; the second part is a supporting part which is provided with a plurality of supporting columns; the filling platform is provided with a concave hole for placing the supporting column.
Further, in the step (2), after the hollow heating mold is placed inside the building prefabricated block, a gap for accommodating the polystyrene foaming material is formed between the bottom of the first part and the filling platform.
Further, in the step (5), the heating temperature is about 100 ℃.
Further, in the step (5), a polystyrene body having a bottom and a cavity with a regular shape is formed.
As another aspect of the present invention, there is provided a construction composite block prepared by the above-described preparation method.
Drawings
Fig. 1 is a schematic view of a method for manufacturing a prefabricated building composite block according to an embodiment of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1, the method for manufacturing the building prefabricated composite block of the embodiment of the invention comprises the following steps: (1) Preparing and molding a building prefabricated block 10 with a middle cavity 11, and placing the building prefabricated block 10 on a filling platform 20; (2) Placing a hollow heating mould 30 with regular shape inside the middle cavity 11 of the building prefabricated block 10; (3) Filling a polystyrene foaming material 12 between the hollow heating mould 30 and the building prefabricated building block 10; (4) Arranging a sealing pressure plate 40 above the building prefabricated building block 10; (5) Heating the hollow heating mould 30, and foaming and adhering the polystyrene foaming material 12 to the inner wall of the building prefabricated building block 10; (6) And (3) taking out the hollow heating mold 30 after cooling, and filling the polystyrene material blocks 50 in regular shapes into the position of the hollow heating mold 30 to form the building prefabricated composite building block 60.
In the step (1), the building precast block 10 can be made of aerated concrete, and has the characteristics of light weight and high strength, the building precast block 10 is provided with one or more middle cavities 11, the inner surface shapes of the middle cavities 11 can be irregular, such as curves, or the middle section area is larger than the top and bottom sections, so that the polystyrene foaming material cannot be directly placed in the block hole. The prepared building prefabricated block 10 is placed on the filling platform 20.
In step (2), a hollow heating mold 30 having a regular shape is placed inside the middle cavity 11 of the construction precast block 10. The hollow heating mold 30 includes a first portion 31 and a second portion 32; the first part 31 is located above, the shortest distance between the outer edge of the first part and the inner side of the middle cavity 11 of the prefabricated building block 10 is smaller than a distance threshold, and the distance threshold can be about 2 to about 3cm, so that a first space 311 filled with polystyrene foaming material exists between the first part 31 and the middle cavity 11 of the prefabricated building block 10. The first portion 31 is made of a heat conductive material, and has electric heating wires 312 on the inner surfaces of the sides and bottom thereof. The second portion 32 is a support portion having one or more support posts 321. The support column 321 may be hollow so that a power supply line may be provided inside the support column 321 to be connected to the electric heating wire 312. Have the shrinkage pool of placing support column 321 through filling platform 20, the degree of depth of shrinkage pool is less than the height of support column 321 to after cavity heating mould 30 arranged in the middle cavity 11 of building prefabricated block 10, first portion 31 bottom and filling platform 20 between have the clearance that holds the polystyrene expanded material, form the second space 323 of filling the styrene expanded material.
In the step (3), the first space 311 and the second space 323 between the hollow heating mold 30 and the building block 10 are filled with the polystyrene foam 12. Wherein the polystyrene foam 12 may be polystyrene beads.
In the step (4), the sealing pressure plate 40 is arranged above the building prefabricated building block 10. In the step (5), the hollow heating mould 30 with a regular shape is heated by the electric heating wire 312, and the polystyrene foaming material 12 is foamed and adhered to the inner wall of the building prefabricated building block 10; a polystyrene body 70 is formed having a bottom and regularly shaped cavities. Since the first space 311 and the second space 323 have a low thickness, the polystyrene foam 12 inside thereof can be sufficiently foamed. (6) And opening the sealing press plate 40 after cooling, taking out the hollow heating mold 30, and filling the polystyrene material blocks 50 in regular shapes into the position of the hollow heating mold 30 to form the building prefabricated composite building block 60.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. The particular features, structures, materials, or characteristics described in this disclosure may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (7)
1. A method for preparing a building prefabricated composite block comprises the following steps: (1) Preparing and molding a building prefabricated building block with a middle cavity, and placing the building prefabricated building block on a filling platform; (2) Placing a hollow heating mold with a regular shape inside the building precast block; (3) Filling polystyrene foam material between the hollow heating mould and the building prefabricated building block; (4) arranging a sealing pressure plate above the building prefabricated building block; (5) Heating the heating mould in the regular shape, and foaming and adhering the polystyrene foaming material to the inner wall of the building prefabricated building block; (6) And (4) taking out the hollow heating mould after cooling, and filling the polystyrene material blocks in regular shapes into the position of the hollow heating mould to form the prefabricated building block.
2. The method of making a building precast composite block according to claim 1, wherein: in the step (1), the building prefabricated building block is prepared from aerated concrete.
3. The method for preparing the building prefabricated composite block according to claim 1, wherein the method comprises the following steps: in the step (1), the inner surface of the middle cavity of the building prefabricated block is in a curve shape.
4. The method for preparing the building prefabricated composite block according to claim 1, wherein the method comprises the following steps: in the step (2), the hollow heating mold is a metal mold, and the inner surface of the hollow heating mold is provided with an electric heating wire.
5. The method of making a building precast composite block according to claim 1, wherein: the regular shape is a quadrangle or a circle.
6. The method of making a building precast composite block according to claim 1, wherein: in the step (3), the polystyrene foam material is polystyrene foam beads.
7. The method of making a building precast composite block according to claim 1, wherein: in the step (5), the heating temperature is 100 ℃.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010821772.7A CN111923313B (en) | 2020-08-15 | 2020-08-15 | Preparation method of building prefabricated composite building block |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010821772.7A CN111923313B (en) | 2020-08-15 | 2020-08-15 | Preparation method of building prefabricated composite building block |
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| CN111923313A CN111923313A (en) | 2020-11-13 |
| CN111923313B true CN111923313B (en) | 2022-10-25 |
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| CN111923313A (en) | 2020-11-13 |
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Effective date of registration: 20220930 Address after: 523000 Nanzhou Industrial Zone, Machong Town, Dongguan City, Guangdong Province Applicant after: Dongguan Yuefeng new building materials Co.,Ltd. Address before: No.38 Haotian North Street, Fangshan District, Beijing, 102445 Applicant before: Jiang Long |
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