CN103449838B - Foamed cement board taking foamed cement board leftovers as regenerated aggregates - Google Patents
Foamed cement board taking foamed cement board leftovers as regenerated aggregates Download PDFInfo
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- CN103449838B CN103449838B CN201310381334.3A CN201310381334A CN103449838B CN 103449838 B CN103449838 B CN 103449838B CN 201310381334 A CN201310381334 A CN 201310381334A CN 103449838 B CN103449838 B CN 103449838B
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- cement plate
- foam cement
- regenerated aggregate
- cement board
- foamed cement
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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Abstract
The invention relates to a foamed cement board taking foamed cement board leftovers as regenerated aggregates. The foamed cement board is prepared from common silicate cement, coal ash, the regenerated aggregates, hydrogen peroxide, zinc stearate, bentonite, an early strength agent, a water reducer and polypropylene fiber. The regenerated aggregates in the foamed cement board are formed by sequentially crushing, sieving and processing the foamed cement board leftovers. The foamed cement board is prepared by the steps: uniformly carrying out dry mixing on the common silicate cement, the coal ash, the regenerated aggregates, the zinc stearate, the bentonite, the early strength agent, the water reducer and the polypropylene fiber according to a certain mixing ratio, then, adding water into the mixture to stir, and finally, doping the hydrogen peroxide to chemically foam, and hydrating and hardening to obtain the foamed cement board. By using the foamed cement board, the problems such as building waste disposal, ecological environment pollution caused by the building waste disposal and the like are solved; and meanwhile, natural aggregates are replaced with the regenerated aggregates formed by processing the foamed cement board leftovers, so that the production burden caused by the fact that the natural aggregates are deficient day by day is also relieved. The foamed cement board prepared by the invention is low in cost, convenient to construct and good in heat insulation property and can be used for external insulation of external walls of house buildings.
Description
Technical field
The invention belongs to building material technical field, be specifically related to a kind of foam cement plate that foam cement plate tankage are regenerated aggregate of take.
Background technology
It is little that foam cement plate has dry apparent density, and thermal conductivity is low, and the advantage such as low and easy construction of cost, is produced widely and apply at present.But exist in its production process, foaming is unstable is difficult to the shortcomings such as control with moulding, causes corner inhomogeneous, and goods surrounding needs cutting, and the tankage that are cut just become industrial waste.According to statistics, the amount of tankage accounts for 5% left and right of foam cement plate factory turnout.Owing to lacking regenerative use technology, factory just piles up simply to this, finally transports rubbish stockyard to and abandons, and not only takies large-area soil, and has caused to a certain extent environmental pollution.At present, the annual production of this type of waste is quite high, if can not be recycled, is not only the waste of resource, more can bring great burden to environment.
It is agglutinate that foam cement plate prepared by the present invention mainly be take ordinary Portland cement and flyash, the fine aggregate that the foam cement plate tankage of take obtain after processing is regenerated aggregate, take hydrogen peroxide as whipping agent, its easy construction, good heat insulating, the external wall outer insulation demand that can meet different areas building construction, has excellent economic benefit and environmental benefit.
Summary of the invention
The object of the present invention is to provide a kind of easy construction, the high and good heat insulating of intensity take the foam cement plate that foam cement plate tankage are regenerated aggregate.
The present invention proposes take the foam cement plate that foam cement plate tankage are regenerated aggregate, and it take ordinary Portland cement and flyash is agglutinate, and the foam cement plate tankage of take are regenerated aggregate, take hydrogen peroxide as whipping agent, and are aided with multiple admixture.The present invention proposes take the foam cement plate that foam cement plate tankage are regenerated aggregate, ordinary Portland cement, flyash, regenerated aggregate, hydrogen peroxide, Zinic stearas, wilkinite, hardening accelerator, water reducer and polypropylene fibre, consist of, the weight ratio of each component is:
Ordinary Portland cement 100
Flyash 5-30
Regenerated aggregate 20-50
Hydrogen peroxide 4-10
Zinic stearas 1-10
Wilkinite 1-15
Hardening accelerator 0.5-4
Water reducer 0.5-5
Polypropylene fibre 1-10.
Each component preferably weight ratio is:
Ordinary Portland cement 100
Flyash 10-20
Regenerated aggregate 25-45
Hydrogen peroxide 5-8
Zinic stearas 2-6
Wilkinite 3-10
Hardening accelerator 1-3
Water reducer 1-3
Polypropylene fibre 2-5.
In the present invention, described ordinary Portland cement is a kind of in 42.5 grades or 52.5 grades of ordinary Portland cements.
In the present invention, described flyash is
level high-calcium fly ass, its free calcium oxide content≤3.0%, loss on ignition≤5.0%.
In the present invention, described regenerated aggregate is that foam cement plate tankage process through broken and screening, and maximum particle diameter is 2.5mm, and tap density is (300-800) kg/m
3, voidage is 13%-25%.The shared weight percent of each particle size range wherein: 1.25 mm-2.5mm diameter is 9.5%; 0.16 mm-1.25mm diameter is 65.4%; Being less than 0.16mm diameter is 25.1%.
In the present invention, the mass concentration of described hydrogen peroxide is 30%.
In the present invention, described Zinic stearas is a kind of white powder, chemical pure, zinc oxide content 13.5%-15.5%.
In the present invention, described wilkinite is sodium bentonite.
In the present invention, described hardening accelerator is a kind of in vitriol or meta-aluminate.
In the present invention, described water reducer is sulfamate based water reducer.
In the present invention, described polypropylene fibre length is 3mm-9mm.
The present invention proposes take the preparation method of the foam cement plate that foam cement plate tankage are regenerated aggregate, and concrete steps are as follows:
(1) foam cement plate tankage are broken, pass through successively 2.5mm, 1.25mm, the screen cloth of 0.16mm, obtains particle size range and is respectively 1.25 mm-2.5mm, and 0.16mm-1.25mm is less than three kinds of regenerated aggregates of 0.16mm;
(2) by the shared weight percent preparation of each particle size range regenerated aggregate: 1.25mm-2.5mm, be 9.5%; 0.16 mm-1.25mm is 65.4%; Being less than 0.16mm is 25.1%;
(3) take by weight proportion step (2) gained regenerated aggregate, ordinary Portland cement, flyash, Zinic stearas, wilkinite, hardening accelerator, water reducer and the polypropylene fibre having prepared, adding water stirs, mix again hydrogen peroxide and stir 20s, pour die for molding into, the demoulding after 1d, and cut according to required specification, obtain desired product.
In the present invention, cement is as main bonding component, and flyash, as adulterant, forms plural gel system together with cement.High-calcium fly ass typically refers to the higher flyash of a kind of CaO composition that fuel-burning power plant adopts brown coal, sub-bituminous coal to give off as fuel, is a kind of some amount hydraulicity crystal mineral that both contained, and contains again the material of lateral reactivity material.
In the present invention, hydrogen peroxide is as whipping agent, because there being a small amount of metal ion in cement slurry, as Fe
3+and Cu
2+and hydrogen peroxide is in the situation that these metal ions exist, can there is selfoxidation-reduction reaction, it is disproportionation reaction, gas is emitted in reaction, when the gas forming rate of hydrogen peroxide and slip hardening rate mate preferably, make to form vesicular structure after slurry sclerosis, so the excellent properties such as foam cement plate has high-strength light and thermal conductivity is low.
In the present invention, Zinic stearas, as suds-stabilizing agent, can improve viscosity and the stability of foam, reduces bubble mobility, extends the bubble burst transformation period.
In the present invention, wilkinite increases the viscosity of cement slurry, is beneficial to the stable of foam, can obviously improve the workability of slurry simultaneously, makes it be easy to moulding.Hardening accelerator promotes the setting and harden of cement slurry, improves early strength, and the hardening rate of slurry is mated with rate of gas release better, prevents the mould phenomenon of collapsing.Water reducer can improve the workability of slurry, or while keeping degree of mobilization identical, reduces water consumption, can obviously improve the intensity after slurry sclerosis.
In the present invention, polypropylene fibre, as fortifying fibre, can effectively improve splitting resistance, frost resistance and the impermeability of foam cement plate.Polypropylene fibre energy apparatus with shock absorbing, effectively reduces crackle, and amplified medium material continuity reduces shockwave and is blocked the stress raisers that cause, thereby can greatly improve the shock resistance of foam cement plate.
Beneficial effect of the present invention is: the present invention is a kind of foam cement plate that foam cement plate tankage are regenerated aggregate of take, and its intensity is high, good heat insulating, and easy construction, is convenient to improve and produces and operating efficiency.It is starting material that product of the present invention adopts trade waste in a large number, and the cost of material is low, has significant economic benefit and environmental benefit.The foam cement plate intensity that the present invention prepares is high, and good heat insulating can be used for the external wall outer insulation of building construction.
Embodiment
Below by embodiment, further illustrate the present invention.
Embodiment 1, a kind ofly take the foam cement plate that foam cement plate tankage are aggregate production, by 42.5 grades of ordinary Portland cements 100, flyash 5, regenerated aggregate 20, hydrogen peroxide 4, Zinic stearas 1, wilkinite 1, vitriol hardening accelerator 0.5, water reducer 0.5, polypropylene fibre 1, water cement ratio is 0.64, by definite stirring technique, stirs, and obtains desired product.The performance test results is in Table 1.
Embodiment 2, a kind ofly take the foam cement plate that foam cement plate tankage are regenerated aggregate, by 52.5 grades of ordinary Portland cements 100, flyash 30, regenerated aggregate 50, hydrogen peroxide 6, Zinic stearas 6, wilkinite 5, meta-aluminate hardening accelerator 1, water reducer 2, polypropylene fibre 4, water cement ratio is 0.64, by definite stirring technique, stirs, and obtains desired product.The performance test results is in Table 1.
Embodiment 3, a kind ofly take the foam cement plate that foam cement plate tankage are regenerated aggregate, by 52.5 grades of ordinary Portland cements 100, flyash 20, regenerated aggregate 35, hydrogen peroxide 7, Zinic stearas 4, wilkinite 7, vitriol hardening accelerator 3, water reducer 3, polypropylene fibre 2, water cement ratio is 0.64, by definite stirring technique, stirs, and obtains desired product.The performance test results is in Table 1.
Embodiment 4, a kind ofly take the foam cement plate that foam cement plate tankage are regenerated aggregate, by 42.5 grades of ordinary Portland cements 100, flyash 30, regenerated aggregate 50, hydrogen peroxide 10, Zinic stearas 10, wilkinite 15, meta-aluminate hardening accelerator 4, water reducer 5, polypropylene fibre 10, water cement ratio is 0.64, by definite stirring technique, stirs, and obtains required product.The performance test results is in Table 1.
table 1 embodiment the performance test results
Claims (8)
1. take the foam cement plate that foam cement plate tankage are regenerated aggregate for one kind, it is characterized in that this foam cement plate is comprised of ordinary Portland cement, flyash, regenerated aggregate, hydrogen peroxide, Zinic stearas, wilkinite, hardening accelerator, water reducer and polypropylene fibre, the weight ratio of each component is:
Ordinary Portland cement 100
Flyash 5-30
Regenerated aggregate 20-50
Hydrogen peroxide 4-10
Zinic stearas 1-10
Wilkinite 1-15
Hardening accelerator 0.5-4
Water reducer 0.5-5
Polypropylene fibre 1-10;
Wherein: described regenerated aggregate is that foam cement plate tankage form through crushing and screening, and maximum particle diameter is 2.5mm, and tap density is (300-800) kg/m
3, voidage is 13%-25%; The shared weight percent of each particle size range wherein: 1.25 mm-2.5mm diameter is 9.5%; 0.16 mm-1.25mm diameter is 65.4%; Being less than 0.16mm diameter is 25.1%; Described wilkinite is sodium bentonite, and described hardening accelerator is a kind of in vitriol or meta-aluminate, and described water reducer is sulfamate based water reducer;
Described foam cement plate obtains by following preparation method, and concrete steps are as follows:
(1) foam cement plate tankage are broken, pass through successively 2.5mm, 1.25mm, the screen cloth of 0.16mm, obtains particle size range and is respectively 1.25 mm-2.5mm, and 0.16-1.25mm is less than three kinds of regenerated aggregates of 0.16mm;
(2) by the shared weight percent preparation of each particle size range regenerated aggregate: 1.25mm-2.5mm, be 9.5%; 0.16 mm-1.25mm is 65.4%; Being less than 0.16mm is 25.1%;
(3) take by weight proportion step (2) gained regenerated aggregate, ordinary Portland cement, flyash, Zinic stearas, wilkinite, hardening accelerator, water reducer and the polypropylene fibre having prepared, adding water stirs, mix again hydrogen peroxide and stir 20s, pour die for molding into, the demoulding after 1d, and cut according to required specification, obtain desired product.
2. according to claim 1ly take the foam cement plate that foam cement plate tankage are regenerated aggregate, it is characterized in that the weight ratio of each component is:
Ordinary Portland cement 100
Flyash 10-20
Regenerated aggregate 25-45
Hydrogen peroxide 5-8
Zinic stearas 2-6
Wilkinite 3-10
Hardening accelerator 1-3
Water reducer 1-3
Polypropylene fibre 2-5.
3. according to claim 1ly take the foam cement plate that foam cement plate tankage are regenerated aggregate, it is characterized in that described ordinary Portland cement is a kind of in 42.5 grades or 52.5 grades of ordinary Portland cements.
4. according to claim 1ly take the foam cement plate that foam cement plate tankage are regenerated aggregate, it is characterized in that described flyash is I level high-calcium fly ass, its free calcium oxide content≤3.0%, loss on ignition≤5.0%.
5. according to claim 1ly take the foam cement plate that foam cement plate tankage are regenerated aggregate, the mass concentration that it is characterized in that described hydrogen peroxide is 30%.
6. according to claim 1ly take the foam cement plate that foam cement plate tankage are regenerated aggregate, it is characterized in that described Zinic stearas is white powder, chemical pure, zinc oxide content 13.5%-15.5%.
7. according to claim 1ly take the foam cement plate that foam cement plate tankage are regenerated aggregate, it is characterized in that described polypropylene fibre is that length is the polypropylene fibre of 3mm-9mm.
8. a preparation method of take the foam cement plate that foam cement plate tankage are regenerated aggregate as claimed in claim 1, is characterized in that concrete steps are as follows:
(1) foam cement plate tankage are broken, pass through successively 2.5mm, 1.25mm, the screen cloth of 0.16mm, obtains particle size range and is respectively 1.25 mm-2.5mm, and 0.16-1.25mm is less than three kinds of regenerated aggregates of 0.16mm;
(2) by the shared weight percent preparation of each particle size range regenerated aggregate: 1.25mm-2.5mm, be 9.5%; 0.16 mm-1.25mm is 65.4%; Being less than 0.16mm is 25.1%;
(3) take by weight proportion step (2) gained regenerated aggregate, ordinary Portland cement, flyash, Zinic stearas, wilkinite, hardening accelerator, water reducer and the polypropylene fibre having prepared, adding water stirs, mix again hydrogen peroxide and stir 20s, pour die for molding into, the demoulding after 1d, and cut according to required specification, obtain desired product.
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| CN201310381334.3A CN103449838B (en) | 2013-08-28 | 2013-08-28 | Foamed cement board taking foamed cement board leftovers as regenerated aggregates |
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|---|---|---|---|
| CN201310381334.3A CN103449838B (en) | 2013-08-28 | 2013-08-28 | Foamed cement board taking foamed cement board leftovers as regenerated aggregates |
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| CN103449838A CN103449838A (en) | 2013-12-18 |
| CN103449838B true CN103449838B (en) | 2014-12-10 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103819159B (en) * | 2014-01-20 | 2015-11-04 | 同济大学 | A kind of with wilkinite and dextrin be water-keeping thickening material ground mortar and using method thereof |
| CN104909663B (en) * | 2015-06-10 | 2017-07-11 | 湖北大学 | A kind of materials recycling phase transformation cement foaming insulation board and preparation method thereof |
| CN105837124B (en) * | 2016-04-25 | 2018-01-02 | 苏州能华节能环保科技有限公司 | A kind of Multi-hole energy-saving insulation material |
| CN107298555A (en) * | 2017-04-13 | 2017-10-27 | 越艳 | Utilize chemical foaming technology technology production foamed concrete and preparation method thereof |
| CN107265967B (en) * | 2017-05-22 | 2020-02-14 | 西南科技大学 | Heat-insulating and shock-absorbing bentonite modified cement-based porous material for roadbed in frozen soil area |
| CN109293312B (en) * | 2018-11-19 | 2021-06-11 | 广西科技大学 | Anti-crack recycled concrete and preparation method thereof |
| CN113735536A (en) * | 2021-09-09 | 2021-12-03 | 泸州时为节能科技有限公司 | High-early-strength binary system energy-saving insulation board and production method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1603271A (en) * | 2003-09-30 | 2005-04-06 | 上海德志建筑设备有限公司 | Ecological environment-friendly type wallboard with regeneration aggregate function and method of manufacture the same |
| CN102633520B (en) * | 2012-03-13 | 2014-05-14 | 江苏南瓷绝缘子股份有限公司 | Method for quickly manufacturing foam cement heat-insulation plate |
| CN103253913B (en) * | 2013-05-10 | 2015-11-25 | 山西大同大学 | A kind of preparation method of basalt fibre reinforced foam concrete heat-insulating matrix material |
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