CN201276786Y - Concrete self-heat preserving sandwich energy-saving bricks - Google Patents

Abstract

The utility model relates to a concrete self heat insulation sandwich energy saving brick, with good heat insulation property and simple application in construction, which is characterized in that two outer sides of the concrete porous brick body are respectively provided with one or two long through holes communicated with each other; the through holes are filled with heat insulation materials; the concrete can be added with industrial or construction waste residues as coal fly ash and waste brick residues and the like, to further improve the heat resistance of the brick and reduce the heat transfer coefficient K under 1.5W/m2k or 2.0W/m2k. The concrete self heat insulation sandwich energy saving brick satisfies national or local energy saving forced standard, with low weight, simple application and the ability for reducing the construction cost of buildings.

Description

Concrete self-insulation sandwich energy-saving brick

technical field

The utility model relates to a building wall material, in particular to a concrete self-heating sandwich energy-saving brick with good thermal insulation performance.

Background technique

Existing sintered clay porous bricks are limited in production because of the need to consume a large amount of valuable land resources, or even prohibit production. At present, although the small concrete hollow blocks that are gradually replacing it can solve the problem of consuming land resources, they still have disadvantages such as large single block weight and inconvenient construction, especially poor thermal insulation performance, which cannot meet the current building energy-saving requirements. The multi-row concrete brick successfully developed by Guangxi Institute of Technology and Hengyuan Construction Engineering Co., Ltd. solves the problems of consuming land resources and inconvenient construction due to the heavy weight of a single block. The thermal insulation performance is also better than that of ordinary concrete blocks. However, it is still not up to the requirements of building energy efficiency standards. Although the patent of "Small Slag Concrete Hollow Block" (ZL971104840), which I invented in 1997, has better thermal insulation performance, it can no longer meet the high requirements of building energy saving, and the weight of a single block is relatively large, which is not convenient for construction. .

Utility model content

The purpose of this utility model is to provide a concrete self-insulation sandwich energy-saving brick that can overcome the shortcomings of the existing technology. High, good thermal insulation performance, can meet the design specification requirements of 50-65% of the current building energy saving, and the cost is low, which is conducive to popularization and application.

The technical scheme that the utility model takes is as follows:

One to two connected elongated through-holes are respectively arranged on the two outer sides of the porous concrete brick body, and thermal insulation materials are filled in the holes.

The holes to be filled are the two outer rows, and only one row or all of them can be filled.

The thermal insulation materials filled in the holes of energy-saving bricks are polystyrene board, extruded board, polyurethane or expanded perlite particles, polystyrene particles, vitrified microspheres, waste foam plastic particles, wood bran, rice husk, waste gypsum A combination of slurry and the above objects, or other thermal insulation objects.

Advantage of the utility model:

(1) Energy saving. Since the round holes on both sides of the concrete hollow bricks are changed into long through holes and the holes are filled with thermal insulation materials, the heat insulation performance of the bricks is increased, and the heat transfer coefficient can reach K≤2.0W/m ² ·k( 190 wall thickness), K≤1.5W/m ² ·k (240 wall thickness), which can meet the requirements of the national building energy conservation mandatory standards.

(2) The weight of the block is small and the construction is convenient, which is conducive to improving the construction quality. Due to the light weight of each piece, workers can easily lift it with one hand, which is convenient for workers to sizing, and after the hollow holes on both sides are filled, the sizing area is increased, the building is more solid, and cracks are not easy to occur.

(3) Save soil. Do not use clay and save national land resources.

(4) Useless. Fly ash, waste brick slag and other industrial waste residues are added to the concrete self-insulating sandwich brick as the main raw materials, and waste foam, waste gypsum, wood chaff, rice husk, etc. can also be used as insulation materials in the hole, which can reduce the size of the brick. Increase the bulk density, increase the thermal resistance of the brick, and make the brick have a moisture-proof function. More importantly, you can also enjoy the preferential tax exemption policy of the country and reduce the cost.

(5) Reduce housing construction costs. Under the premise of ensuring that the national mandatory requirements for building energy conservation are met, the cost of using concrete self-insulating sandwich energy-saving brick walls and plastering on both sides is less than 50 yuan. It is more than 100 yuan/ ^m2 cheaper than the external wall insulation system of ordinary concrete small hollow blocks and expanded polystyrene boards, which is more than 50 yuan/ ^m2 .

Description of drawings

Figure 1 is a schematic diagram of the structure of a 190mm thick concrete self-insulating sandwich energy-saving brick with three rows of holes.

Figure 2 is a schematic diagram of the structure of a 190mm thick concrete self-insulating sandwich energy-saving brick with four rows of holes.

Figure 3 is a schematic diagram of the structure of a 240mm thick concrete self-insulating sandwich energy-saving brick with four rows of holes.

Figure 4 is a schematic structural diagram of a 240mm thick concrete self-insulating sandwich energy-saving brick with five rows of holes.

Detailed ways

The utility model is to change the two rows of multiple circular or rectangular small holes on the outside of the concrete porous brick body 1 into 1 to 2 connected rectangular through holes 3, and fill the holes with expanded perlite thermal insulation slurry or polycarbonate. Benzene board and other high-efficiency insulation materials 2 to increase its thermal resistance and reduce its heat transfer coefficient, so that the heat transfer coefficient of the sandwich energy-saving brick can be reduced to below the requirements of national or local building energy-saving mandatory standards. In order to further increase the thermal resistance of the energy-saving brick and reduce its heat transfer coefficient, more than 30% of industrial or construction waste such as fly ash or waste brick slag can also be added to the concrete.

The number of holes in the concrete sandwich energy-saving brick with a thickness of 190mm is generally 3-4 rows, and a thickness of 240mm is generally 4-5 rows. The holes are hollow through holes. The shape and number of rows of the hollow hole 4 in the middle are not limited, and the holes are generally only filled outside. Two rows, or only one row or all of them can be filled.

The appearance of the concrete self-insulating sandwich energy-saving brick of the utility model is 240×190×115 (or 90) mm, 240×240×115 (or 90) mm. Or use other sizes and specifications as required.

The high-efficiency thermal insulation material 2 filled in the hollow hole of the concrete self-insulation sandwich energy-saving brick of the utility model can be polystyrene board, extruded plastic board, or expanded perlite, polyphenylene particles, vitrified microbeads, and old foam Plastic pellets, wood bran, rice husk, gypsum or a slurry of the above materials.

The concrete self-insulating hollow energy-saving brick of the utility model is filled with various heat-insulating and heat-insulating materials in the hollow holes on both sides to form a concrete self-insulating sandwich energy-saving brick, which can increase the thermal resistance of the brick, reduce the heat transfer coefficient, and reduce the heat transfer coefficient. To K≤1.5W/m ² ·k or K≤2.0W/m ² ·k, meeting the requirements of the national building energy conservation mandatory standards.

Claims (2)

1. A concrete self-insulating sandwich energy-saving brick, including a number of hollow core holes (4) in the middle of the brick, characterized in that one to two connected elongated through holes are respectively arranged on the outer sides of the concrete porous brick body (1) (3), and fill the heat insulation material (2) in the hole. 2. The concrete self-insulating sandwich energy-saving brick according to claim 1, characterized in that: the holes to be filled are two rows on the outside, and only one row or all of them can be filled.

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