CN104829187A - Novel foam concrete block for self-heat-insulation of wall body and producing method of same - Google Patents
Novel foam concrete block for self-heat-insulation of wall body and producing method of same Download PDFInfo
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- CN104829187A CN104829187A CN201510001298.2A CN201510001298A CN104829187A CN 104829187 A CN104829187 A CN 104829187A CN 201510001298 A CN201510001298 A CN 201510001298A CN 104829187 A CN104829187 A CN 104829187A
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Abstract
A novel foam concrete block for self-heat-insulation of a wall body relates to a light-weight foam concrete block for heat insulation of a wall body. In the invention, the foam concrete block, of which the porosity and the pore size are changed continuously, is formed by mixing and stirring a large-flowability slurry material and foams in different proportions and continuously pouring the mixture. The large-flowability slurry material is composed of following components, by mass: 100 parts of cement, 10-30 parts of a blending material, 0-5 parts of an additive agent, 0-3 parts of fibers, 0.5-5 parts of a water reducing agent and 25-84 parts of water. According to the required compressive strength and thermal resistance of the block, addition rate curves of the foam and the slurry material are designed. A finished product of the foam concrete block is prepared through continuously material feeding, material stirring, material discharging, pouring and maintenance. The novel self-heat-insulation foam concrete block is wide in source of raw materials, is simple in producing process, is low in cost and is controllable in performances. The foam concrete block can be widely applied in a single heat-insulation wall body of an external wall (self heat-insulation of the wall body), internal and external separation walls in frame structure, back board walls of a large wall cabinet, and fireproof, sound-insulating and heat-insulating layers of internal wall.
Description
Technical field
The invention belongs to light energy conservation construction material field, be specifically related to a kind of Novel foam concrete building block for wall self-insulation and production method thereof.
Background technology
Along with the enforcement of China's wall reform and Building Energy Conservation Policy, require the performances such as the material used not only has lightweight, high-strength, insulation, heat insulation, profit is useless, energy-conservation in modern architecture, but also need material to have uninflammability.
Foamed concrete, as a kind of novel material of construction, possesses above-mentioned performance, will replace rapidly the flammable heat preserving and insulating material of now widely used organic and be widely used in building energy conservation.Existing Self-insulating wall building block, " the gangue foam concrete building block for wall self-insulation " as publication number CN102493593 discloses a kind of by apparent density 700 ~ 1350 ㎏/m
3the shell prepared of high strength gangue foam concrete and 80 ~ 300 ㎏/m
3ultralow foamed concrete prepare core composition building block; Publication number is that " foam cement heat insulation sandwich layer building block " of CN202131705 proposes by the heat insulation building block of the same cement board therebetween foaming thermal-insulation cement boards of two sizes; Publication number is that " sandwich self-insulation foam concrete block " of CN201695560 discloses a kind of main body and be made up of outer wall and inwall, and outer wall and inwall surround multiple sandwich chamber, adds the building block that inorganic heat preservation light material forms sandwich layer in this chamber.In addition also have many scholars to arrange and shape size from the hole of building block, change the aspects such as raw materials and heat insulation building block is improved.
On address existing building block and mainly there is following shortcoming: the holllow building block 1) first need preparing different shape, then inject light material, complex forming technology, the production cycle is long, and cost is high.2) core and base material bond difficulty, and thermal expansivity is inconsistent, easy to crack.3) block strength is not high, and water-intake rate is large, easily seeps water, thus causes later strength to reduce, structure efflorescence.
Summary of the invention
The object of the invention is the weak point for existing Self-insulating wall building block, a kind of Novel foam concrete building block for wall self-insulation is provided.This material has continually varying pore texture, and internal porous is incubated, and dense surface degree is high, and ultimate compression strength strengthens gradually from center to face, and thermal conductivity reduces gradually from surface to center.Achieve lightweight and high-strength, be incubated and fp unified, both the shortcoming that the concrete intensity of conventional foam is low, dry linting, breakage rate are high had been overcome, the Interface Crack that interface is obvious, internal stress large, interlayer thermal expansivity difference causes overcoming again lamellar composite foaming thermal-insulating, the technical barrier that shear fracture easily occurs along plate core in-plane.
Realizing technical scheme of the present invention is: a kind of Novel foam concrete building block for wall self-insulation, is characterized in that: be made up of a kind of large fluidity slurry and foam.Wherein large fluidity slurry comprises following mass parts starting material: cement 100 parts, adulterant 10 ~ 30 parts, admixture 0 ~ 5 part, fiber 0 ~ 3 part, water reducer 0.5 ~ 5 part, 25 ~ 84 parts, water.
In content of the present invention: the described Novel foam concrete building block for wall self-insulation, is characterized in that: after described foam is diluted by 1:20 ~ 40 by animal protein foaming agent and water, mechanical foaming obtains.
In content of the present invention: the described Novel foam concrete building block for wall self-insulation, is characterized in that: described cement is PO42.5 level ordinary Portland cement.
In content of the present invention: the described Novel foam concrete building block for wall self-insulation, is characterized in that: described adulterant is one or both in flyash, breeze, stone flour.
In content of the present invention: the described Novel foam concrete building block for wall self-insulation, is characterized in that: described admixture is one or more in hardening accelerator (trolamine, sodium sulfate), accelerating chemicals, hydrophober.
In content of the present invention: the described Novel foam concrete building block for wall self-insulation, is characterized in that: described fiber is polypropylene fibre or vegetable fibre.
In content of the present invention: the described Novel foam concrete building block for wall self-insulation, is characterized in that: described water reducer is the one in high performance water reducing agent of polyocarboxy acid or naphthalene water reducer.
The production method of the above-mentioned Novel foam concrete building block for wall self-insulation, is characterized in that comprising the following steps:
(1) take starting material according to the proportioning composition of large fluidity slurry and be stirred to slurry in stirrer.
(2) whipping agent and water are diluted in proportion also mechanical foaming.
(3) slurry and foam are pressed the adding rate curve set, add in mixed bubble machine continuously, after mixing, namely continuous placing enters mould.
(4) foamed concrete is after maintenance, cuts into the building block of specifying size.
As shown in Figure 1, wherein the adding rate curve of foam is not limited to accompanying drawing 1 to the adding rate of step (3) described slurry and foam, can adjust according to the pore structure of building block.
Step (4) described maintenance can for vapor cure or natural curing, tell cutting after building block be rectangular parallelepiped; Described reinforced, mixed bubble, build to be continuous print process and to build to be discharge port by special, evenly inject in mould to prevent slip from sinking slowly.From accompanying drawing 1: slurry adding rate is constant, the adding rate of foam is increased to maximum value from zero, then remains unchanged, then is reduced to zero gradually by maximum value.Along with the increase of foam adding rate, the foamed concrete apparent density of preparation reduces gradually, the inevitable dense surface (adding rate of foam is zero) of building block of visible preparation, surface increases gradually to central porisity rate, the corresponding reduction of apparent density (adding rate of foam increases gradually).
Compared with prior art, the present invention has features and beneficial effect:
(1) raw material sources is extensive, and the simple and primary concreting building block of production technique, with short production cycle, cost is low.
(2) slurry adding rate one timing, by regulating size, the hold-time of foam adding rate, is easy to make the building block of production to reach the requirement of the standards such as national building energy conservation 50%, 65%.
(3) building block disposal molding, without interface, dense surface pore is few, and internal porosity increases gradually, until middle part density of material is minimum, then pore reduces until dense surface again gradually.Therefore this Novel foam concrete building block not only has excellent thermal and insulating performance and fire resistance, and has higher surface strength, flexural strength, resistance to impact shock and the shearing resistance along in-plane.
(4) product lightweight, dry density 500 ~ 1300 ㎏/m
3, be conducive to alleviating buildings weight, improve bearing capacity and the seismic force of buildings; Ultimate compression strength is high, thermal conductivity is low, waterproof, excellent in durability, in the life-span same with main construction, is conducive to building energy conservation.
[accompanying drawing explanation]: Fig. 1 is the adding rate graphic representation of slurry and foam
Embodiment
Embodiment with reference to embodiment, but is not limited to embodiment.
Embodiment 1
For a Novel foam concrete building block for wall self-insulation, prepared by following steps:
1) take cement 100 parts, 15 parts, flyash, trolamine 0.6 part, fiber 1 part, water reducer 2 parts, 36 parts, water, carry out stirring in stirrer and be prepared into a kind of large fluidity slurry.
2) whipping agent and water are pressed 1:30 to dilute and mechanical foaming.
3) by the slurry in step 1) and step 2) in foam add in mixed bubble machine by the adding rate curve set, mixing after and continuous discharge enter mould.
4) can grow after maintenance, cutting for 600mm, the wide 200mm of being, height are the foam concrete block of 200mm.The apparent density of this building block is 615 ㎏/m
3, ultimate compression strength>=3.5 MPa, thermal conductivity≤0.14 W/ (mk).
Embodiment 2
For a Novel foam concrete building block for wall self-insulation, prepared by following steps:
1) take cement 100 parts, 15 parts, flyash, trolamine 0.6 part, fiber 1 part, water reducer 2 parts, 36 parts, water, carry out stirring in stirrer and be prepared into a kind of large fluidity slurry.
2) whipping agent and water are pressed 1:30 to dilute and mechanical foaming.
3) by the slurry in step 1) and step 2) in foam add in mixed bubble machine by the adding rate curve set, mixing after and continuous discharge enter mould.
4) can grow after maintenance, cutting for 600mm, the wide 200mm of being, height are the foam concrete block of 200mm.The apparent density of this building block is 820 ㎏/m
3, ultimate compression strength>=4.5 MPa, thermal conductivity≤0.21 W/ (mk).
Above-described embodiment 1 is identical with the slurry proportioning of 2, changes the adding rate curve of foam and obtains the foam concrete block of different apparent density.
Embodiment 3
For a Novel foam concrete building block for wall self-insulation, prepared by following steps:
1) take cement 100 parts, breeze 20 parts, 1.2 parts, sodium sulfate, accelerating chemicals 2 parts, fiber 1 part, water reducer 0.8 part, 65 parts, water, carry out stirring in stirrer and be prepared into a kind of large fluidity slurry.
2) whipping agent and water are pressed 1:30 to dilute and mechanical foaming.
3) by the slurry in step 1) and step 2) in foam add in mixed bubble machine by the adding rate curve set, mixing after and continuous discharge enter mould.
4) can grow after maintenance, cutting for 600mm, the wide 200mm of being, height are the foam concrete block of 200mm.The apparent density of this building block is 525 ㎏/m
3, ultimate compression strength>=2.5 MPa, thermal conductivity≤0.12W/ (mk).
Embodiment 4
For a Novel foam concrete building block for wall self-insulation, prepared by following steps:
1) take cement 100 parts, stone flour 20 parts, 10 parts, flyash, water reducer 0.4 part, 65 parts, water, carry out stirring in stirrer and be prepared into a kind of large fluidity slurry.
2) whipping agent and water are pressed 1:30 to dilute and mechanical foaming.
3) by the slurry in step 1) and step 2) in foam add in mixed bubble machine by the adding rate curve set, mixing after and continuous discharge enter mould.
4) can grow after maintenance, cutting for 600mm, the wide 200mm of being, height are the foam concrete block of 200mm.The apparent density of this building block is 1089 ㎏/m
3, ultimate compression strength>=8.2 MPa, thermal conductivity≤0.25W/ (mk).
In above-described embodiment: after described foam is diluted by 1:25 by animal protein foaming agent and water, mechanical foaming obtains; Described cement is PO42.5 level ordinary Portland cement; Described flyash is II grade of ash; Described breeze is S95 level, S105 level; Described stone flour fineness is less than 75 microns; Described fiber is polypropylene fibre or vegetable fibre; Described water reducer is the one in high performance water reducing agent of polyocarboxy acid or naphthalene water reducer.
Claims (8)
1. for a Novel foam concrete building block for wall self-insulation, it is characterized in that: be made up of a kind of large fluidity slurry and foam.Wherein large fluidity slurry comprises following mass parts starting material: cement 100 parts, adulterant 10 ~ 30 parts, admixture 0 ~ 5 part, fiber 0 ~ 3 part, water reducer 0.5 ~ 5 part, 25 ~ 84 parts, water.
2. the Novel foam concrete building block for wall self-insulation according to claim 1, is characterized in that: after described foam is diluted by 1:20 ~ 40 by animal protein foaming agent and water, mechanical foaming obtains.
3. the Novel foam concrete building block for wall self-insulation according to claim 1, is characterized in that: described cement is PO42.5 level ordinary Portland cement.
4. the Novel foam concrete building block for wall self-insulation according to claim 1, is characterized in that: described adulterant is one or both in flyash, breeze, stone flour.
5. the Novel foam concrete building block for wall self-insulation according to claim 1, is characterized in that: described admixture is one or both in hardening accelerator (trolamine, sodium sulfate), accelerating chemicals.
6. the Novel foam concrete building block for wall self-insulation according to claim 1, is characterized in that: described fiber is polypropylene fibre or vegetable fibre.
7. the Novel foam concrete building block for wall self-insulation according to claim 1, is characterized in that: described water reducer is the one in high performance water reducing agent of polyocarboxy acid or naphthalene water reducer.
8. the production method of the Novel foam concrete building block for wall self-insulation described in any one of claim 1-7, is characterized in that comprising the following steps:
(1) take starting material according to the proportioning composition of large fluidity slurry and be stirred to slurry in stirrer
(2) whipping agent and water are diluted in proportion also mechanical foaming
(3) slurry and foam are pressed the adding rate curve set, add in mixed bubble machine continuously, after mixing, namely continuous placing enters mould
(4) foamed concrete is after maintenance, cuts into the building block of specifying size
As shown in Figure 1, wherein the adding rate curve of foam is not limited to Fig. 1 to the adding rate of step (3) described slurry and foam, can adjust according to the pore structure of building block.
Step (4) described maintenance can for vapor cure or natural curing, tell cutting after building block be rectangular parallelepiped; Described reinforced, mixed bubble, build to be continuous print process and to build to be discharge port by special, evenly inject in mould to prevent slip from sinking slowly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510001298.2A CN104829187A (en) | 2015-01-05 | 2015-01-05 | Novel foam concrete block for self-heat-insulation of wall body and producing method of same |
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| CN201510001298.2A CN104829187A (en) | 2015-01-05 | 2015-01-05 | Novel foam concrete block for self-heat-insulation of wall body and producing method of same |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105541379A (en) * | 2015-12-17 | 2016-05-04 | 乔生艮 | Lightweight concrete energy saving insulation board and preparation method thereof |
| CN105604239A (en) * | 2015-12-28 | 2016-05-25 | 宁波工程学院 | Foam concrete function gradient composite board and preparing method thereof |
| CN105801169A (en) * | 2016-03-25 | 2016-07-27 | 上海十三冶建设有限公司 | Preparation method of foam concrete capable of being used for mass casting without vibration puddling |
| CN105906371A (en) * | 2016-04-25 | 2016-08-31 | 广东省建筑科学研究院集团股份有限公司 | Production method of lightweight concrete prefabricated big panels |
| CN107188501A (en) * | 2017-07-13 | 2017-09-22 | 长荣新材料技术有限公司 | Foam concrete heat-preserving plate and preparation method and apparatus thereof |
| CN107216102A (en) * | 2017-07-05 | 2017-09-29 | 肥西县碧涛建材有限公司 | A kind of air-entrained concrete building block and preparation method thereof |
| CN105585330B (en) * | 2015-12-17 | 2018-06-19 | 承德振龙建筑材料集团有限公司 | A kind of energy-saving heat preserving air-entrained concrete building block and preparation method thereof |
| CN110282922A (en) * | 2019-06-17 | 2019-09-27 | 荆晨 | A kind of production technology of Novel foam concrete building block |
| CN110590249A (en) * | 2019-09-05 | 2019-12-20 | 张建华 | Raw material for producing foam concrete and preparation method thereof |
| CN113530414A (en) * | 2021-07-05 | 2021-10-22 | 河南华泰新材科技股份有限公司 | Fireproof door core plate and production process thereof |
| CN115196924A (en) * | 2022-08-03 | 2022-10-18 | 新疆北新建材工业集团有限公司 | Preparation method of light-weight high-strength solid waste base foaming geopolymer self-insulation building block |
-
2015
- 2015-01-05 CN CN201510001298.2A patent/CN104829187A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105541379A (en) * | 2015-12-17 | 2016-05-04 | 乔生艮 | Lightweight concrete energy saving insulation board and preparation method thereof |
| CN105541379B (en) * | 2015-12-17 | 2018-06-26 | 江苏金贸科技发展有限公司 | A kind of lightweight concrete energy-conserving thermal insulation board and preparation method thereof |
| CN105585330B (en) * | 2015-12-17 | 2018-06-19 | 承德振龙建筑材料集团有限公司 | A kind of energy-saving heat preserving air-entrained concrete building block and preparation method thereof |
| CN105604239B (en) * | 2015-12-28 | 2018-04-20 | 宁波工程学院 | A kind of foam concrete functionally gradient composite plate and preparation method thereof |
| CN105604239A (en) * | 2015-12-28 | 2016-05-25 | 宁波工程学院 | Foam concrete function gradient composite board and preparing method thereof |
| CN105801169A (en) * | 2016-03-25 | 2016-07-27 | 上海十三冶建设有限公司 | Preparation method of foam concrete capable of being used for mass casting without vibration puddling |
| CN105906371A (en) * | 2016-04-25 | 2016-08-31 | 广东省建筑科学研究院集团股份有限公司 | Production method of lightweight concrete prefabricated big panels |
| CN105906371B (en) * | 2016-04-25 | 2019-01-11 | 广东省建筑科学研究院集团股份有限公司 | A kind of preparation method of lightweight concrete assembled large panel |
| CN107216102A (en) * | 2017-07-05 | 2017-09-29 | 肥西县碧涛建材有限公司 | A kind of air-entrained concrete building block and preparation method thereof |
| CN107188501A (en) * | 2017-07-13 | 2017-09-22 | 长荣新材料技术有限公司 | Foam concrete heat-preserving plate and preparation method and apparatus thereof |
| CN110282922A (en) * | 2019-06-17 | 2019-09-27 | 荆晨 | A kind of production technology of Novel foam concrete building block |
| CN110590249A (en) * | 2019-09-05 | 2019-12-20 | 张建华 | Raw material for producing foam concrete and preparation method thereof |
| CN113530414A (en) * | 2021-07-05 | 2021-10-22 | 河南华泰新材科技股份有限公司 | Fireproof door core plate and production process thereof |
| CN115196924A (en) * | 2022-08-03 | 2022-10-18 | 新疆北新建材工业集团有限公司 | Preparation method of light-weight high-strength solid waste base foaming geopolymer self-insulation building block |
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Application publication date: 20150812 |
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