CN102409798A - Self-insulating brick - Google Patents
Self-insulating brick Download PDFInfo
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- CN102409798A CN102409798A CN2011102680453A CN201110268045A CN102409798A CN 102409798 A CN102409798 A CN 102409798A CN 2011102680453 A CN2011102680453 A CN 2011102680453A CN 201110268045 A CN201110268045 A CN 201110268045A CN 102409798 A CN102409798 A CN 102409798A
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- cement
- flyash
- brick
- insulating
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/24—Structural elements or technologies for improving thermal insulation
- Y02A30/244—Structural elements or technologies for improving thermal insulation using natural or recycled building materials, e.g. straw, wool, clay or used tires
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- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a self-insulating brick, which comprises a rectangular brick body. The self-insulating brick is characterized in that the brick body is provided with insulating holes along the height direction; the insulating holes are provided with insulating layers; two insulating holes are provided; vertical through holes are further arranged between the two insulating holes; the quantity of the vertical through holes is 1-3; and a plurality of vertical through holes are transversely arranged between the two insulating holes. Compared with the prior art, the self-insulating brick provided by the invention has the advantages of: energy conservation, thermal insulation, heat insulation, sound insulation, light volume weight, waterproofness, fire proofing, simple technology, convenient production, environment friendliness, convenient material drawing, soil conservation, low carbon, clay free, national land resource conversation, long product durability and capability of lowering construction cost.
Description
[technical field]
The present invention relates to the self-insulating brick of a kind of energy-conservation, insulation, fire prevention, waterproof.
[background technology]
At present, the enforcement of, fire code energy-conservation along with country, all there is requirement in builing industry to technical indicators such as the energy-saving heat preserving of brick, fire prevention, waterproof, walling unit weight, drying shrinkage values; The different brick of many forms appears thereupon; Requirements such as that but existing these bricks all fail to satisfy simultaneously is energy-conservation, insulation, fire prevention, waterproof, walling unit weight, drying shrinkage value exist product processes complicated, and product cost is high; Yield poorly; Speed of application slow with the big defective of difficulty, and owing to heat insulating material adopts the chemical materials manufacturing more, along with the growth heat-insulating property of service time will reduce; The durability variation; Heat insulating material and brick, construction material are poor, thereby maybe need adopt the variety of problems such as construction cost of intermediate materials and the brick of higher price to cause unit in charge of construction's direct economic loss and construction period long, fail to satisfy the requirement of existing building industry.
[summary of the invention]
In order to solve the above problems, the invention provides a kind of in light weight, energy-conservation, fire prevention, waterproof self-insulating brick.Improve big, the shortcoming such as intensity low poor of big, waterproof thermal-insulated difference of cement brick weight and foam concrete brick drying shrinkage value fully with the close wood property of Masonry cement mortar; The present invention of improvement back reaches that unit weight is light, intensity is high, good self-heat conserving performance, sound insulation, waterproof, fire prevention,, wall construction low with the good easy construction of masonry mortar parent's wood property, drying shrinkage value need not special process and material, and body of wall is not easy characteristics such as cracking.
The objective of the invention is to realize like this:
Self-insulating brick, the brick body that it comprises cuboid is characterized in that being provided with the insulation hole along short transverse in the brick body, and insulation is provided with insulation layer in the hole.
Aforesaid self-insulating brick, the quantity that it is characterized in that said insulation hole is two, also is provided with vertical through holes between described two insulation holes, and the quantity of vertical through holes is 1-3, and a plurality of vertical through holes are horizontally arranged between two insulation holes.
Aforesaid self-insulating brick; It is characterized in that described insulation layer adopts cement or the useless slurry of cement, waste foam, flyash, blowing agent to process, its weight part ratio is the useless slurry of cement or cement: waste foam: flyash: blowing agent=1: (0.10-0.35): (0.15-0.35): (0.05-0.15).
Aforesaid self-insulating brick; It is characterized in that described insulation layer adopts cement or the useless slurry of cement, waste foam, waste gypsum, flyash, blowing agent to process, its weight part ratio is the useless slurry of cement or cement: waste foam: waste gypsum: flyash: blowing agent=1: (0.10-0.35): (0.05-0.20): (0.15-0.35): (0.05-0.15).
Aforesaid self-insulating brick; It is characterized in that described insulation layer adopts cement or the useless slurry of cement: rice husk, flyash, blowing agent are processed, and its weight part ratio is the useless slurry of cement or cement: rice husk: flyash: blowing agent=1: (0.10-0.35): (0.15-0.35): (0.05-0.15).
Aforesaid self-insulating brick; It is characterized in that described insulation layer adopts cement or the useless slurry of cement: perlite: flyash: blowing agent is processed, and its weight part ratio is the useless slurry of cement or cement: perlite: flyash: blowing agent=1: (0.10-0.40): (0.15-0.35): (0.05-0.15).
Aforesaid self-insulating brick is characterized in that described brick body adopts the useless slurry of stone flour, flyash, cement or cement to process; Its weight part ratio is a stone flour: flyash: the useless slurry=1 of cement or cement: (0.15-0.25): (0.20-0.3).
Aforesaid self-insulating brick; It is characterized in that described brick body adopts the useless slurry of stone flour, deposed brick slag, flyash, cement or cement to process, its weight part ratio is a stone flour: deposed brick slag: flyash: the useless slurry=1 of cement or cement: (0.30-0.40): (0.15-0.25): (0.20-0.30).
Aforesaid self-insulating brick is characterized in that described brick body adopts the useless slurry of stone flour, flyash, cement or cement, rice husk to process; Its weight part ratio is: stone flour: flyash: the useless slurry of cement or cement: rice husk=1: (0.15-0.25): (0.20-0.3): (0.10-0.25).
Aforesaid self-insulating brick is characterized in that the thickness of the thickness of described vertical through holes greater than the insulation hole.
The present invention compared with prior art has the following advantages:
(1) energy-saving heat preserving, heat insulation, sound insulation: change self-insulating brick into three rounds by former two rounds; Lean on brick outside two rows to make rectangular close bottom outlet; A middle row makes two holes of rectangle (see figure 3); Pour into the compound insulating material of foam concrete then in two platoon leader holes, brick outside at present, foamed concrete thermal-insulating material and hollow concrete block are integrally formed, when external voice or heat pass to inside, must pass through metope in cement stone dust layer → foam concrete compound insulating material → cement stone dust layer → center air layer → cement stone dust layer → foam concrete compound insulating material → cement stone dust layer arrival; Because sound and heat energy are receiving weakening of multiple layers of different materials; Thereby change, heat transfer of the present invention, heat conductivility, thus increase thermal resistivity and heat transfer time reach energy-saving heat preserving, sound insulation, effect of heat insulation.
(2) unit weight is light: because the present invention is that to adopt hollow concrete block be base, in base substrate, pours into the light foam of unit weight at present and mix and doubt native compound insulating material, institute so that brick unit weight less than
(3) waterproof: the present invention adopts the cement brick base substrate to irritate the foam concrete composite material at present; Because base substrate is when irritating foam concrete at present; The foam concrete slurry that flows can fill up all holes of cement brick contact surface layer simultaneously; But make the hole of cement brick surface layer water mixing seep water, reach good waterproof effect thereby stop water to enter into brick body inside.
(4) fire prevention: well-known cement products is the fire proofing in the constructional materials, and what fill is foamed concrete thermal-insulating material and the present invention is inner, and foam concrete has excellent fireproof performance, so reach national existing fire code A grade standard.
(5) the technology simple production is convenient: the present invention is the product that a kind of cement brick and foam concrete are composited; This product is when producing hollow concrete block, to pour into the foam concrete compound insulating material to be made; Need not that secondary make to be filled and maintenance, only needing with cement brick the while maintenance to make can.
(6) environmental protection, the facility of drawing materials: main production raw material of the present invention has stone flour, flyash, cement and cement give up slurry, deposed brick slag, rice husk, waste foam, waste gypsum etc., draws materials according to local conditions.
(7) joint soil, low-carbon (LC): product does not use clay, practices thrift the State owned land resource.The manufacturing process heating that need not to heat, overall process adopts natural curing.
(8) good close wood property and low drying shrinkage value: because the present invention adopts cement brick and foam concrete to be composited; Cement adobe surfacing is with to build batch dash silt particle slurry performance by laying bricks or stones close; Work progress the present invention need not handle especially; Adopt that tradition is built by laying bricks or stones, plastering technique and the construction of traditional mortar get final product convenient construction and saving cost.The present invention is composited by cement brick and foam concrete brick, because two kinds of bricks have different drying shrinkage values, so can effectively reduce drying shrinkage value of body of the present invention own and the performance of improving brick after compound.
(9) durability of product: the present invention is composited with cement stone dust and foam concrete, and heat insulating material can not use thereby reach properties of product because of the aging of material reduces performance lastingly.
(10) reduce construction cost: the present invention is a kind of self-insulating brick; Under the prerequisite that satisfies national existing energy conservation criteria and local Compulsory Feature; Metope itself need not to use special thermal insulation mortar, waterproofing course and the special construction of handling; Practice thrift thermal insulation mortar and construction of waterproof layer material money and labour cost, reduce construction cost and accelerate speed of application.
[description of drawings]
Fig. 1 is a structural representation of the present invention;
Fig. 2 is a stereogram of the present invention;
Fig. 3 is an another kind of structural representation of the present invention.
[specific embodiment]
Self-insulating brick, it comprises brick body 1, and brick body 1 can be the same with the volume of existing brick body, is a rectangular shape, is provided with insulation hole 3 along short transverse in the brick body 1, and insulation is provided with insulation layer 4 in the hole 3.As shown in Figure 1, insulation hole 3 is divided into internal layer 100, intermediate layer 101 and outer 102 with wall, and insulation is provided with insulation layer 4 in the hole 3, insulation layer 4 be arranged between internal layer 100 and the intermediate layer 101 and intermediate layer 101 and outer 102 between.
Like Fig. 2, shown in Figure 3, the quantity in insulation hole 3 can be two, also is provided with vertical through holes 2 between described two insulation holes 3, and the quantity of vertical through holes 2 is 1-3, and a plurality of vertical through holes are horizontally arranged between two insulation holes.That is to say that vertical through holes 2 is divided into internal layer 200A, outer 200B with brick body 1; Insulation hole 3 is divided into first internal layer 201 and second internal layer 202 with internal layer 200A; Insulation hole 3 is divided into second outer 203 and first skin 204 with outer 200B, and insulation hole 3 is arranged between second internal layer 202 and second outer 203.Insulation hole 3 preferably is arranged on the middle part of internal layer 200A and the middle part of outer 200B with insulation layer 4.
The thickness H1 of vertical through holes 2 is greater than the thickness H2 in insulation hole 3.
The component of brick body can be: the useless slurry of stone flour, flyash, cement or cement; Its weight part ratio is a stone flour: flyash: the useless slurry=1 of cement or cement: (0.15-0.25): (0.20-0.3).
The component of brick body can also be: the useless slurry of stone flour, deposed brick slag, flyash, cement or cement, its weight part ratio is a stone flour: deposed brick slag: flyash: the useless slurry=1 of cement or cement: (0.30-0.40): (0.15-0.25): (0.20-0.30).
The component of brick body can also be: the useless slurry of stone flour, flyash, cement or cement, rice husk; Its weight part ratio is: stone flour: flyash: the useless slurry of cement or cement: rice husk=1: (0.15-0.25): (0.20-0.3): (0.10-0.25).
The component of insulation layer can be: cement or cement give up slurry, waste foam, flyash, blowing agent; Its weight part ratio is the useless slurry of cement or cement: waste foam: flyash: blowing agent=1: (0.10-0.35): (0.15-0.35): (0.05-0.15).
The component of insulation layer can be: cement or cement give up slurry, waste foam, waste gypsum, flyash, blowing agent, its weight part ratio are the useless slurry of cement or cement: waste foam: waste gypsum: flyash: blowing agent=1: (0.10-0.35): (0.05-0.20): (0.15-0.35): (0.05-0.15).
The component of insulation layer can be: the useless slurry of cement or cement: rice husk, flyash, blowing agent, its weight part ratio are the useless slurry of cement or cement: rice husk: flyash: blowing agent=1: (0.10-0.35): (0.15-0.35): (0.05-0.15).
The component of insulation layer can be: the useless slurry of cement or cement: perlite: flyash: blowing agent, its weight part ratio are the useless slurry of cement or cement: perlite: flyash: blowing agent=1: (0.10-0.40): (0.15-0.35): (0.05-0.15).
The present invention changes hollow concrete block into three rounds by former two rounds; Lean on brick outside two rows to make rectangular close bottom outlet; A middle row makes two holes of rectangle (seeing accompanying drawing for details), pours into the compound insulating material of foam concrete then in two platoon leader holes, brick outside at present, and the compound insulating material additional proportion can be according to the each place to energy-saving heat preserving rank and the requirement of walling unit weight; The heat insulating material that in foam concrete, adds corresponding proportion respectively; Thereby change heat transfer of the present invention, heat conductivility, increase the unit weight of thermal resistivity of the present invention and heat transfer time, walling, thereby reach national existing energy conservation criteria and satisfy the each place new walling reform requirement.
Claims (10)
1. self-insulating brick, the brick body (1) that it comprises cuboid is characterized in that being provided with insulation hole (3) along short transverse in the brick body (1), is provided with insulation layer (4) in the insulation hole (3).
2. self-insulating brick according to claim 1; The quantity that it is characterized in that said insulation hole (3) is two; Also be provided with vertical through holes (2) between described two insulation holes (3), the quantity of vertical through holes (2) is 1-3, and a plurality of vertical through holes (2) are horizontally arranged between two insulation holes (3).
3. self-insulating brick according to claim 1; It is characterized in that described insulation layer (4) adopts cement or the useless slurry of cement, waste foam, flyash, blowing agent to process, its weight part ratio is the useless slurry of cement or cement: waste foam: flyash: blowing agent=1: (0.10-0.35): (0.15-0.35): (0.05-0.15).
4. self-insulating brick according to claim 1; It is characterized in that described insulation layer adopts cement or the useless slurry of cement, waste foam, waste gypsum, flyash, blowing agent to process, its weight part ratio is the useless slurry of cement or cement: waste foam: waste gypsum: flyash: blowing agent=1: (0.10-0.35): (0.05-0.20): (0.15-0.35): (0.05-0.15).
5. self-insulating brick according to claim 1; It is characterized in that described insulation layer adopts cement or the useless slurry of cement: rice husk, flyash, blowing agent are processed, and its weight part ratio is the useless slurry of cement or cement: rice husk: flyash: blowing agent=1: (0.10-0.35): (0.15-0.35): (0.05-0.15).
6. self-insulating brick according to claim 1; It is characterized in that described insulation layer adopts cement or the useless slurry of cement: perlite: flyash: blowing agent is processed, and its weight part ratio is the useless slurry of cement or cement: perlite: flyash: blowing agent=1: (0.10-0.40): (0.15-0.35): (0.05-0.15).
7. according to claim 1 or 2 or 3 or 4 or 5 described self-insulating bricks, it is characterized in that described brick body adopts the useless slurry of stone flour, flyash, cement or cement to process; Its weight part ratio is a stone flour: flyash: the useless slurry=1 of cement or cement: (0.15-0.25): (0.20-0.3).
8. according to claim 1 or 2 or 3 or 4 or 5 described self-insulating bricks; It is characterized in that described brick body adopts the useless slurry of stone flour, deposed brick slag, flyash, cement or cement to process, its weight part ratio is a stone flour: deposed brick slag: flyash: the useless slurry=1 of cement or cement: (0.30-0.40): (0.15-0.25): (0.20-0.30).
9. according to claim 1 or 2 or 3 or 4 or 5 described self-insulating bricks, it is characterized in that described brick body adopts the useless slurry of stone flour, flyash, cement or cement, rice husk to process; Its weight part ratio is a stone flour: flyash: the useless slurry of cement or cement: rice husk=1: (0.15-0.25): (0.20-0.3): (0.10-0.25).
10. according to claim 1 or 2 or 3 or 4 or 5 described self-insulating bricks, it is characterized in that the thickness (H2) of the thickness (H1) of described vertical through holes (2) greater than insulation hole (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102680453A CN102409798A (en) | 2011-09-09 | 2011-09-09 | Self-insulating brick |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102680453A CN102409798A (en) | 2011-09-09 | 2011-09-09 | Self-insulating brick |
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| CN102409798A true CN102409798A (en) | 2012-04-11 |
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| CN2011102680453A Pending CN102409798A (en) | 2011-09-09 | 2011-09-09 | Self-insulating brick |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110803931A (en) * | 2019-12-04 | 2020-02-18 | 焦作鑫昆节能保温材料科技有限公司 | Novel composite baking-free refractory brick and preparation process thereof |
| CN110919820A (en) * | 2019-12-17 | 2020-03-27 | 樊杰俊 | Production process of concrete composite self-heat-insulation brick building block |
| CN114412121A (en) * | 2021-12-31 | 2022-04-29 | 山东嘉腾实业有限公司 | Magnesium oxide light heat-insulation geothermal brick |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19741282A1 (en) * | 1997-09-19 | 1999-04-08 | Diha Schneider Gmbh | Building brick |
| CN201198617Y (en) * | 2008-05-06 | 2009-02-25 | 吴振江 | Double-ridge three-hole type hollow heat preservation building block |
| CN101481237A (en) * | 2009-01-06 | 2009-07-15 | 西北农林科技大学 | Preparation method of phase-change heat-storage heat-preservation porous building block |
| DE202009002579U1 (en) * | 2009-02-23 | 2009-07-16 | Vitapore Gmbh | Prefabricated building block for use as brick |
| CN201276786Y (en) * | 2008-08-25 | 2009-07-22 | 郑勇 | Concrete self-heat preserving sandwich energy-saving bricks |
| CN101525923A (en) * | 2009-04-15 | 2009-09-09 | 贵阳白云耀筑新型建筑材料厂 | Light aggregate compound heat preserving building blocks and manufacturing method thereof |
| CN201305947Y (en) * | 2008-10-16 | 2009-09-09 | 叶万隆 | Composite heat insulating porous brick |
| CN101725210A (en) * | 2009-12-14 | 2010-06-09 | 武汉兴联宏业新型建筑材料有限公司 | Light foaming sandwich heat and moisture preserving building block |
| CN202299092U (en) * | 2011-09-09 | 2012-07-04 | 樊杰俊 | Self-heat-insulating brick |
-
2011
- 2011-09-09 CN CN2011102680453A patent/CN102409798A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19741282A1 (en) * | 1997-09-19 | 1999-04-08 | Diha Schneider Gmbh | Building brick |
| CN201198617Y (en) * | 2008-05-06 | 2009-02-25 | 吴振江 | Double-ridge three-hole type hollow heat preservation building block |
| CN201276786Y (en) * | 2008-08-25 | 2009-07-22 | 郑勇 | Concrete self-heat preserving sandwich energy-saving bricks |
| CN201305947Y (en) * | 2008-10-16 | 2009-09-09 | 叶万隆 | Composite heat insulating porous brick |
| CN101481237A (en) * | 2009-01-06 | 2009-07-15 | 西北农林科技大学 | Preparation method of phase-change heat-storage heat-preservation porous building block |
| DE202009002579U1 (en) * | 2009-02-23 | 2009-07-16 | Vitapore Gmbh | Prefabricated building block for use as brick |
| CN101525923A (en) * | 2009-04-15 | 2009-09-09 | 贵阳白云耀筑新型建筑材料厂 | Light aggregate compound heat preserving building blocks and manufacturing method thereof |
| CN101725210A (en) * | 2009-12-14 | 2010-06-09 | 武汉兴联宏业新型建筑材料有限公司 | Light foaming sandwich heat and moisture preserving building block |
| CN202299092U (en) * | 2011-09-09 | 2012-07-04 | 樊杰俊 | Self-heat-insulating brick |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110803931A (en) * | 2019-12-04 | 2020-02-18 | 焦作鑫昆节能保温材料科技有限公司 | Novel composite baking-free refractory brick and preparation process thereof |
| CN110919820A (en) * | 2019-12-17 | 2020-03-27 | 樊杰俊 | Production process of concrete composite self-heat-insulation brick building block |
| CN114412121A (en) * | 2021-12-31 | 2022-04-29 | 山东嘉腾实业有限公司 | Magnesium oxide light heat-insulation geothermal brick |
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Application publication date: 20120411 |