CN102674771A - High iron slag power doped wave-absorbing foam concrete and preparation method thereof - Google Patents
High iron slag power doped wave-absorbing foam concrete and preparation method thereof Download PDFInfo
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- CN102674771A CN102674771A CN2012101572013A CN201210157201A CN102674771A CN 102674771 A CN102674771 A CN 102674771A CN 2012101572013 A CN2012101572013 A CN 2012101572013A CN 201210157201 A CN201210157201 A CN 201210157201A CN 102674771 A CN102674771 A CN 102674771A
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
The invention relates to a preparation method of high iron slag power doped wave-absorbing foam concrete, wherein the preparation method comprises the step of mixing cement, a physical foaming agent, an addition agent, microfiber, a polycarboxylic acid efficient water reducing agent and water. The preparation method is characterized in that the addition agent is high iron slag power, wherein the high iron slag power and cement are mixed according to the mass ratio of (10-40):(60-90). The adopted material for preparing the foam concrete comprises the high iron slag power which belongs to byproducts in the steel smelting process, wherein the high iron slag power contains a great amount of ferric oxide components, has the properties of magnetism loss and dielectric loss, and can act as a wave-absorbing agent of a cheap building material; and the high iron slag power has wide sources, is low in price, can turn waste into wealth when being used as the building material, and achieves the aim of energy conservation and environment friendliness.
Description
Technical field
The present invention relates to a kind of admixture high ferro slag powders and inhale ripple foamed concrete and preparation method thereof, belong to the interleaving techniques field of architectural materials science and electromagnetism science.
Background technology
Inhale ripple foamed concrete and be and can incident electromagnetic wave be changed into the energy of other form and a kind of building function material that hertzian wave is dissipated; It is to alleviating the buildings deadweight; The elimination electromagenetic wave radiation alleviates building energy consumption and the stealthy of military architecture thing has great importance.Foamed concrete has characteristics such as lightweight, thermal and insulating performance is good, the sound-proof refractory performance is good, is widely used in the energy-saving wall material.Research for wave-absorbing material applied to buildings at present mainly concentrates on materials such as adding metal-powder, ferrite, fiber, powdered carbon, whisker, EPS in the cement-based material; Though can improve its absorbing property; But because the adding of wave absorbing agent; Can influence the intensity of cement-based material, resulting suction wave building density of material is big, cost is high.
Summary of the invention
The object of the present invention is to provide a kind of admixture high ferro slag powders foamed concrete, the density that effectively solves material is big, cost is high, can not take into account shortcomings such as heat-insulating property.
The preparation method of admixture high ferro slag powders foamed concrete of the present invention comprises cement, pneumatogen, and admix, primitive fiber, high-efficiency water-reducing agent of poly-carboxylic acid and water blended step is characterized in that described admix is the high ferro slag powders; Wherein, described high ferro slag powders is that mix 10 ~ 40:60 ~ 90 with cement by mass ratio.
Among the above-mentioned preparation method of the present invention, for the optimisation technique scheme, the specific surface area of described high ferro slag powders is preferably more than 600m
2/ kg, iron oxide content is preferably more than 30%.
Among the above-mentioned preparation method of the present invention, for further optimization, described cement is preferably silicate cement or ordinary Portland cement.
Among the above-mentioned preparation method of the present invention, described primitive fiber is preferably calcium carbonate crystal whisker or carbon nanotube.
Among the above-mentioned preparation method of the present invention,, particularly, comprise the steps: for optimization further
1. with primitive fiber, high ferro slag powders and cement mixing, stir, get the material I; Wherein, described high ferro slag powders is that mix 10 ~ 40:60 ~ 90 with cement by mass ratio;
2. pneumatogen is mixed with water, the system bubble gets foam;
3. with material I, high-efficiency water-reducing agent of poly-carboxylic acid and water mix, and obtain slurry;
4. foam and slurry are mixed, stir, get the material II;
5. moulding: the material II is injected mould, and shake is flat, 20 ± 2 ℃ of temperature, and relative humidity＞95% time, maintenance 24 hours;
6. the demoulding;
7. at 20 ± 2 ℃, relative humidity＞95% time maintenance is to the length of time.
Those skilled in the art can obtain the suction ripple foamed concrete of the present invention of different volumes density through the proportioning between the adjustment raw material.
Another object of the present invention is to the foamed concrete that provides above-mentioned arbitrary said method to prepare.
Therefore, the present invention has the following advantages:
(1) adopts preparation to inhale in the material of ripple foamed concrete and comprise the high ferro slag powders; The high ferro steel-making slag powder belongs to the sub product in the steelmaking process; It contains a large amount of iron oxide component, has magnetic loss and dielectric loss characteristics, can be used as cheap material of construction wave absorbing agent; And high ferro steel-making slag powder wide material sources, cheap, utilize its preparation material of construction, can turn waste into wealth, reach the purpose of energy-saving and environmental protection.
(2) there be the even bubble of a large amount of diameters in the foamed concrete at 0.1 ~ 1mm; In the middle of wave-absorber system, serve as the ripple body; Improved the transmission path of hertzian wave in concrete because the parcel of cement slurry, bubble formation ball-type resonant cavity one by one; After hertzian wave incident, a series of scattering of generation and reflection cause electromagnetic loss in cavity.
(3) levigate high ferro slag powders has certain activity; It is a kind of active admixture of cement concrete; Red stone in the high ferro slag powders is the wave absorbing agent that a kind of its existing ferrimagnetism has dielectric properties again simultaneously, can produce dielectric loss and can produce the mangneto loss again.After adding the foamed concrete system, improve the electromagnetic performance and the impedance matching performance of whole system, improved the wave-sucking performance of foamed concrete.
(4) foamed concrete of the present invention, it is good to have an absorbing property, and it is wide to absorb frequency range, the characteristics of good heat insulating.Those skilled in the art can obtain the suction ripple foamed concrete of the present invention of different performance through adjustment proportioning and wave absorbing agent volume.
Description of drawings
Accompanying drawing 1 width of cloth of the present invention,
Fig. 1 is embodiment 1 and embodiment 2 absorbing property test patterns, and wherein, a is the absorbing property test of embodiment 1, and b is the absorbing property test of embodiment 2.
Fig. 2 is the powerful microscope photo of embodiment 1.
Embodiment
Following non-limiting example can make those of ordinary skill in the art more fully understand the present invention, but does not limit the present invention in any way.Ordinary Portland cement used in the present invention derives from the PO42.5R cement that cement mill, little wild field, Dalian produces; The high ferro slag powders derives from Angang Stock Co., Ltd, and converter shrend slag is processed after levigate; High-efficiency water-reducing agent of poly-carboxylic acid is purchased in Dalian Mingyuanquan Technology Development Co., Ltd., and model is MZ-10; The animal/vegetable protein composite foamable agent derives from SY-F30 " shield " cement blowing agent that Yantai, Shandong generation is produced with building machinery ltd.
Foamed concrete of the present invention is investigated through test heat-insulating property and absorbing property; Heat-insulating property is measured through thermal conductivity measuring apparatus; Absorbing property adopts arc reflection method in no echo darkroom, to test, and test result is represented with dB.
High ferro slag powders used in the present invention component concentration such as following table:
| Element | Fe | Fe 2O 3 | SiO 2 | Al 2O 3 | CaO | MgO |
| Content/% | 0.23 | 32.16 | 15.42 | 6.36 | 35.92 | 4.83 |
Embodiment 1 foamed concrete design volume density 400kg/m
3, thickness is 25mm
1. 5g calcium carbonate crystal whisker, 300g high ferro slag powders, 700g ordinary Portland cement are mixed, stir, get the material I;
2. 10g animal/vegetable protein composite foamable agent is mixed with 200g water, system bubble 3min gets foam;
3. with the material I, 10g high-efficiency water-reducing agent of poly-carboxylic acid and 300g water mix, and obtain slurry;
4. foam and slurry are mixed, stir, get the material II;
5. moulding: the material II is injected mould, and shake is flat, 20 ± 2 ℃ of temperature, and maintenance 24h in the cement conservation case of relative humidity＞95%;
6. the demoulding;
7. at 20 ± 2 ℃, maintenance to 28 day length of time in the curing room of relative humidity＞95%.
In electric drying oven with forced convection, 60 ℃ are carried out performance test behind the oven dry 24h down, are 0.122W/mK through detecting thermal conductivity with goods; The test result of absorbing property is as shown in Figure 1.
1. 5g carbon nanotube, 200g high ferro slag powders, 800g ordinary Portland cement are mixed, stir, get the material I;
2. 10g animal/vegetable protein composite foamable agent is mixed with 100g water, system bubble 3min gets foam;
3. with the material I, 10g high-efficiency water-reducing agent of poly-carboxylic acid and 400g water mix, and obtain slurry;
4. foam and slurry are mixed, stir, get the material II;
5. moulding: the material II is injected mould, and shake is flat, 20 ± 2 ℃ of temperature, and maintenance 24h in the cement conservation case of relative humidity＞95%;
6. the demoulding;
7. at 20 ± 2 ℃, maintenance to 28 day length of time in the curing room of relative humidity＞95%.
In electric drying oven with forced convection, 60 ℃ are carried out performance test behind the oven dry 24h down, are 0.138W/mK through detecting thermal conductivity with goods; The test result of absorbing property is as shown in Figure 1.
As can beappreciated from fig. 1, the foamed concrete that embodiment 1 makes reflectivity when 17.4GHz is minimum, has reached-9.4dB, presents more to high frequency the situation that absorbing property is good more; The foamed concrete that embodiment 2 makes reflectivity when 14.4GHz is minimum, has reached-21.8dB, also presents more to high frequency the situation that absorbing property is good more.
Claims (6)
1. the preparation method of an admixture high ferro slag powders foamed concrete comprises cement, pneumatogen, and admix, primitive fiber, high-efficiency water-reducing agent of poly-carboxylic acid and water blended step is characterized in that described admix is the high ferro slag powders; Wherein, described high ferro slag powders is that mix 10 ~ 40:60 ~ 90 with cement by mass ratio.
2. preparation method according to claim 1, the specific surface area that it is characterized in that described high ferro slag powders is greater than 600m
2/ kg, iron oxide content is greater than 30%.
3. preparation method according to claim 1 and 2 is characterized in that described cement is silicate cement or ordinary Portland cement.
4. preparation method according to claim 3 is characterized in that described primitive fiber is calcium carbonate crystal whisker or carbon nanotube.
5. according to claim 1 or 4 described preparing methods, comprise the steps:
1. with primitive fiber, high ferro slag powders and cement mixing, stir, get the material I; Wherein, described high ferro slag powders is that mix 10 ~ 40:60 ~ 90 with cement by mass ratio;
2. pneumatogen is mixed with water, the system bubble gets foam;
3. with material I, high-efficiency water-reducing agent of poly-carboxylic acid and water mix, and obtain slurry;
4. foam and slurry are mixed, stir, get the material II;
5. moulding: the material II is injected mould, and shake is flat, 20 ± 2 ℃ of temperature, and relative humidity＞95% time, maintenance 24 hours;
6. the demoulding;
7. at 20 ± 2 ℃, relative humidity＞95% time maintenance is to the length of time.
6. the foamed concrete for preparing of the described method of claim 1.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101572013A CN102674771B (en) | 2012-05-18 | 2012-05-18 | High iron slag power doped wave-absorbing foam concrete and preparation method thereof |
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| CN2012101572013A CN102674771B (en) | 2012-05-18 | 2012-05-18 | High iron slag power doped wave-absorbing foam concrete and preparation method thereof |
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| CN102674771A true CN102674771A (en) | 2012-09-19 |
| CN102674771B CN102674771B (en) | 2013-11-06 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103011723A (en) * | 2012-12-12 | 2013-04-03 | 首钢总公司 | Heavily-doped steel slag foam concrete building block and preparation method thereof |
| CN106082860A (en) * | 2016-06-15 | 2016-11-09 | 重庆天维绿色建筑技术开发有限公司 | A kind of expanded material and preparation method and application |
| CN106220067A (en) * | 2016-08-04 | 2016-12-14 | 广西玉林市绿盛科贸有限责任公司 | A kind of slag fire-retardant heat insulation foam concrete and preparation method thereof |
| CN108558328A (en) * | 2018-04-04 | 2018-09-21 | 北京工业大学 | A kind of Electromagnetically shielding cement based composites and preparation method thereof |
| CN109704674A (en) * | 2019-01-16 | 2019-05-03 | 湖北大学 | A kind of whisker reinforcement dry slag pervious concrete |
| CN109930091A (en) * | 2017-12-19 | 2019-06-25 | 宜兴安纳西智能机械设备有限公司 | One kind takes up stacked laminator lifting platform material |
| CN109956735A (en) * | 2017-12-14 | 2019-07-02 | 卢松 | A kind of lightweight inhales the preparation method of wave aerated bricks |
| CN112812612A (en) * | 2021-02-08 | 2021-05-18 | 大连理工大学 | Building wave-absorbing coating based on magnesium oxide excited steel slag and preparation method thereof |
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| CN1145885A (en) * | 1995-09-21 | 1997-03-26 | 河北省城乡勘察院 | Building concrete |
| CN101723632A (en) * | 2009-11-23 | 2010-06-09 | 河北科技大学 | Process for preparing load-bearing foam concrete blocks |
| CN102199021A (en) * | 2011-03-26 | 2011-09-28 | 大连理工大学 | Nano-material composite concrete with super high performance |
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2012
- 2012-05-18 CN CN2012101572013A patent/CN102674771B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1145885A (en) * | 1995-09-21 | 1997-03-26 | 河北省城乡勘察院 | Building concrete |
| CN101723632A (en) * | 2009-11-23 | 2010-06-09 | 河北科技大学 | Process for preparing load-bearing foam concrete blocks |
| CN102199021A (en) * | 2011-03-26 | 2011-09-28 | 大连理工大学 | Nano-material composite concrete with super high performance |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103011723A (en) * | 2012-12-12 | 2013-04-03 | 首钢总公司 | Heavily-doped steel slag foam concrete building block and preparation method thereof |
| CN103011723B (en) * | 2012-12-12 | 2015-02-25 | 首钢总公司 | Heavily-doped steel slag foam concrete building block and preparation method thereof |
| CN106082860A (en) * | 2016-06-15 | 2016-11-09 | 重庆天维绿色建筑技术开发有限公司 | A kind of expanded material and preparation method and application |
| CN106082860B (en) * | 2016-06-15 | 2018-06-22 | 重庆天维绿色建筑技术开发有限公司 | A kind of expanded material and preparation method and application |
| CN106220067A (en) * | 2016-08-04 | 2016-12-14 | 广西玉林市绿盛科贸有限责任公司 | A kind of slag fire-retardant heat insulation foam concrete and preparation method thereof |
| CN109956735A (en) * | 2017-12-14 | 2019-07-02 | 卢松 | A kind of lightweight inhales the preparation method of wave aerated bricks |
| CN109956735B (en) * | 2017-12-14 | 2021-12-28 | 内蒙古阜丰生物科技有限公司 | Preparation method of light wave-absorbing aerated brick |
| CN109930091A (en) * | 2017-12-19 | 2019-06-25 | 宜兴安纳西智能机械设备有限公司 | One kind takes up stacked laminator lifting platform material |
| CN108558328A (en) * | 2018-04-04 | 2018-09-21 | 北京工业大学 | A kind of Electromagnetically shielding cement based composites and preparation method thereof |
| CN109704674A (en) * | 2019-01-16 | 2019-05-03 | 湖北大学 | A kind of whisker reinforcement dry slag pervious concrete |
| CN112812612A (en) * | 2021-02-08 | 2021-05-18 | 大连理工大学 | Building wave-absorbing coating based on magnesium oxide excited steel slag and preparation method thereof |
| CN112812612B (en) * | 2021-02-08 | 2022-05-13 | 大连理工大学 | Building wave-absorbing coating based on magnesium oxide excited steel slag and preparation method thereof |
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| CN102674771B (en) | 2013-11-06 |
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