CN103755274A - Aerated concrete block and preparation method thereof - Google Patents
Aerated concrete block and preparation method thereof Download PDFInfo
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- CN103755274A CN103755274A CN201310718311.7A CN201310718311A CN103755274A CN 103755274 A CN103755274 A CN 103755274A CN 201310718311 A CN201310718311 A CN 201310718311A CN 103755274 A CN103755274 A CN 103755274A
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Abstract
The invention belongs to the technical field of building materials and particularly relates to an aerated concrete block and a preparation method thereof. The technical scheme is as follows: the aerated concrete block comprises the following components in parts by weight: 20-50 parts of cement, 20-55 parts of shale ash, 10-40 parts of mineral powder, 0.08-0.12 part of foam stabilizer, 0.5-3 parts of natural gypsum and 3-7 parts of hydrogen peroxide, wherein the ratio of water to material is 0.58-0.65. The heat self-preservation aerated concrete block prepared by the invention has the low volume weight of 200-500kg/m<3>, the heat conductivity coefficient of 0.06-0.12W/m.k and the compensative strength of 0.8-3MPa, and various indexes such as fire resistance, freezing resistance and the like of the aerated concrete block can be up to the national traditional autoclaved aerated concrete standard.
Description
Technical field
The invention belongs to building material technical field, relate in particular to a kind of air-entrained concrete building block and preparation method.
Background technology
Lack of energy and Economic development are the important topics that the world today faces jointly.Along with the anxiety of Energy situation and the growth at full speed of building energy consumption, building energy conservation becomes more and more important.In recent years, under national policy and relevant government department support energetically, particularly big and medium-sized cities, 170, the whole nation in 2003 ban use of the appearance of solid clay common brick policy, and novel wall material, take energy-conservation, joint soil, sharp useless, environmental protection and functional as developing direction, has obtained fast development.Along with the development of novel wall material, the power-saving technology in new variety walling production process improves greatly.But the heat transfer coefficient of many new variety wallings itself is larger, and body of wall is prone to the problems such as crack, makes architectural exterior-protecting construction heat insulating effect poor, still can not realize the object that the raising of building energy conservation produces a desired effect.
At present, common external wall energy-saving heat insulation system has three kinds, i.e. exterior wall internal insulation system, external wall heat insulation system and outer wall self heat-preserving system.Exterior wall internal insulation system and external wall heat insulation system are the building energy conservation modes that domestic contrast is popular, in inner side of outer wall or outside, install organic insulation material additional, play the effect of heat-insulation and heat-preservation.These organic lagging materials are mainly derived from petroleum by-product, comprise expansion polyphenyl plate (EPS), extruded polystyrene board (XPS), polyurethane coating (SPU) and granular polystyrene etc.From the whole country, organic external thermal insulation system has occupied more than 75% share in the current external wall outer insulation of China market.The great advantage of organic insulation material is that light weight, insulation, thermal insulation are good, and cost is also low, but its poor stability is easily aging, easy firing, and fire resistance is low, and smog is large during burning, toxicity is large.In Nanjing, encircle International Square, Harbin longitude and latitude 360 is spent Gemini mansion, the generation of several the fire disaster accidents such as the Olympic Sports Center, Jinan, impel the Ministry of Public Security on March 14th, 2011, to issue the notice > > of < < about further clear and definite covil construction heat insulating material for external fire supervision management relevant requirements, be called for short ' No. 65 ', public logical word waits file [2009] No. 46, requiring covil construction heat insulating material for external must adopt incendivity is the material of A level, thereby building material industry has been proposed to new higher requirement.
Outer wall self heat-preserving is built by laying bricks or stones with single materials for wall, and can not rely on other lagging materials and reach a kind of body of wall of the requirement of building energy conservation 65%, and this materials for wall itself has the performance of certain heat insulating.As mainly contain self-conserving heat type air-entrained concrete building block, perforated brick, hollow brick and various concrete hollow block from the single-material of energy-saving wall.
Self-conserving heat type gas concrete is the New Building Materials of a kind of lightweight, porous, have that quality is light, good heat insulation, can process and the A level advantage such as do not burn, can make building block, sheet material and the heat insulating products of different size, its weather resistance can with the same life-span of buildings, comprehensive cost is also lower than external wall heat insulation system.But, current comparatively ripe industrial Aerated concrete products, its over dry unit weight mostly is 500 ~ 600kg/m3, cannot meet the energy-conservation more than 65% further energy conservation standard of single-material; Adopt non-evaporating pressure foamed concrete, its intensity is very low, and has certain difficulty when construction and maintenance; Exterior wall internal insulation system, can reduce effective living space, and cost is higher when interior construction.External wall heat insulation system, outside working procedure is more complicated, and intensity is lower and will regularly replace; External wall heat insulation system and exterior wall internal insulation system, the lagging material of selecting is all organic materials, but larger defect is poor stability, easily aging, easy firing, fire resistance is low, and smog is large during burning, toxicity is large.For low unit weight, low heat conduction and high-intensity B02, B03, B04 level self-conserving heat type air-entrained concrete building block, study less.
Tens00000000 tons of the annual industrial solid castoffs producing of China, then processing and utilizing rate is low, environmental pollution is serious.Develop various industrial solid castoff treatment technologies, impel its recycling, become problem demanding prompt solution.Along with improving constantly and the tight demand of energy-saving and emission-reduction of domestic construction security requirement, utilize industrial solid castoff to prepare the important directions that novel low unit weight outer wall self heat-preserving material has been energy-saving building materials development.
Low thermal-conductivity aerated concrete of CN102167619B and preparation method thereof, utilize multiple silicate base material and the compound component of getting angry to prepare goods, various and the blending process relative complex of its raw material type, and required cost is much higher with respect to the present invention, and more difficult quantification produces.CN102701659A B02 level lightweight sand aerated concrete PLASTIC LAMINATED, it uses large volume quartz sand and lime to make raw material in process of production, and cost value is higher with respect to the present invention; It selects aluminium powder for the material of getting angry, for low unit weight gas concrete, goods pore structure poor and also produce more difficult control.
Summary of the invention
The object of the invention is to, overcome the deficiencies in the prior art, a kind of air-entrained concrete building block and preparation method are provided.The present invention fully utilizes solid waste (useless aerated bricks building block, high calcium shale ashes, slag powders, flyash etc.), be equipped with again a certain proportion of calcareous material (cement, lime etc.), through stirring, get angry, build, quietly stop, steam press maintenance prepares low unit weight between 200-500kg/m
3, thermal conductivity is between 0.06-0.1 2W/m.k, and ultimate compression strength is at 0.8-3 MPa, and each indexs such as resistivity against fire, frost resistance all can reach the self-conserving heat type air-entrained concrete building block of national existing steam-pressing aero-concrete standard.When moulding, foam, pore is than the warming plate that is easier to control and can prepare any size.
For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of air-entrained concrete building block, comprise by weight following composition: cement 20-50 part, shale ashes 20-55 part, breeze 10-40 part, suds-stabilizing agent 0.08-0.12 part, plaster of paris 0.5-3 part, hydrogen peroxide 3-7 part, ratio of water to material 0.58-0.65.
Hydrogen peroxide is that mass percentage concentration is 30% analytical pure.
Described cement is composite Portland cement.
The preparation method of suds-stabilizing agent of the present invention is: get 1 weight part oleic acid and mix with 2-4 weight part trolamine, be diluted with water to again the solution that mass concentration is 30-50%, in the solution of dilution, mix the solution quality per-cent that accounts for dilution and be 3-5% ether of cellulose and mix.
Suds-stabilizing agent has the effect of steady bubble and thickening, can guarantee the stability of bubble and the homogeneity of dispersion, extends the time that bubble stabilizes exists, and also contributes to improve the fine and closely wovenization degree of bubble simultaneously.
The present invention also comprises regulating the qi flowing in the channels agent 0-0.5 weight part, and described regulating the qi flowing in the channels agent is: Na
2siO
39H
2o.Regulating the qi flowing in the channels agent is hydrogen peroxide stabilizer, is used for the chemical reaction of modification stability hydrogen peroxide, effectively reduces its raising rate in slip whipping process, guarantees the stability that stirs and build.
The present invention also comprises useless building block 0-20 weight part.Useless building block is the waste aerocrete building block producing in process of factory production, in actual production many as waste stack need not, greatly wasted resource.In experiment, it is levigately incorporated into the effect that can play " crystal seed " in batching, improving hydrated product in experiment goods especially has the crystallization degree of the tobermorite of significant contribution to intensity.
The present invention also comprises flyash 0-15 weight part.Flyash is high-quality II level flyash, is the flying dust emitting after burning under the super sea coal condition of high temperature of fuel-burning power plant, is the mixing material with volcano grey matter activity.The temperature of combustion of flyash is high more a lot of than the temperature of combustion of shale ashes, and shape is more regular, contains a large amount of globular glass bodies, has " micro aggregate effect " and " filling effect "; Its fineness ratio cement is little, with it, replaces part of cement, and the mobility of slurry can be improved in effectively filler particles gap, increases degree of compactness.
The preparation method of air-entrained concrete building block, comprises the following steps:
1) pre-treatment of raw material: above-mentioned starting material are mixed in proportion and stir, shale ashes fineness is 6-30%, and 45um tails over, and useless building block fineness is 5-20%, and 45um tails over, and flyash and breeze carry out drying and processing, cement selection 45.2R composite Portland cement;
Shale ashes are also kerosene shale ash, to adopt by fuel-burning power plant the flying dust emitting after oil shale combustion, but temperature of combustion is lower, original state kerosene shale ash particle is the noncrystalline state of irregular, loosely organized porous, aggregation force is larger, and water requirement is also larger, is unfavorable for the raising of goods degree of compactness and intensity; Through levigate processing, there is the specific surface area while improving the fineness of kerosene shale ash particle and homogeneity, increase chemical reaction and strengthen the effect of its pozzolanic activity, be conducive to the raising of goods pore hole wall compactness extent and intensity.
2) get compound and add water to make slurry, and slip is stirred, controlling slip diffusibleness is 20-26cm, slurry temperature 20-55 ℃;
3) foaming: add suds-stabilizing agent and hydrogen peroxide in slip, pour immediately die for molding into after stirring 5-30s;
4) quietly stop maintenance: the goods of moulding are put into the quiet chamber of stopping and carried out vapor cure 6-12 hour, temperature 40-60 ℃, humidity 80-95%;
5) steam press maintenance: after goods cutting, 0.8-1.2MPa carries out steam press maintenance 5-9 hour, the 2-3h that boosts, constant voltage 4-6h, step-down 2-3h.
Step 2 described in the inventive method) get compound and add water to make slurry, add regulating the qi flowing in the channels agent simultaneously, and slip is stirred, controlling slip diffusibleness is 20-26cm, slurry temperature 20-55 ℃.
The invention has the beneficial effects as follows: the waste solid waste that can account for utilizations a large amount of between 65-75% of industry in the present invention, can realize as much as possible the abundant recycling of waste resource, can reach the relevant criterion of national gas concrete.
The present invention can effectively utilize the kerosene shale ash of high calcium, and utilization ratio can account for the 20-55% of total amount, can effectively process the oil shale waste slag problem producing in industrial production; Meanwhile, the present invention produce in admixture the discarded air-entrained concrete building block of 0-20% do crystal seed, when making full use of waste resource, also greatly improved the performance of goods.
The present invention adopts hydrogen peroxide to prepare air-entrained concrete building block, and pore is evenly closely knit, can effectively improve the pressure distribution while preparing pressurized, improves ultimate compression strength and the heat-insulating property of goods
The fairly simple convenience of industrial technique realizing, convenient operation and yield rate are high.Because raw material multiselect is prepared with waste, thereby arrange with low cost, can guarantee under the prerequisite of ultralow unit weight, high strength and low thermal conductivity, can prepare as required the self-conserving heat type air-entrained concrete building block of B02, B03, B04 different grades, and construction is simple, do not need to add again organic insulation material and just can play good heat insulation effect, can effectively reduce the holistic cost of building construction; And because itself unit weight is just little, can reduce house deadweight.
Goods can be as required, cuts into the product of different size shape.
The present invention has utilized the preparation of inorganic solid waste material, flame-resistant high-temperature-resistant, and resistance to compression and folding strength are all significantly higher than traditional inorganic heat insulation material; The present invention can meet and meets B02, the B03 of national standard, the manufacture of B04 level self-conserving heat type air-entrained concrete building block, unit weight is low, intensity is high and heat-insulating property higher than traditional B05, B06 level gas concrete; These goods can not rely on other lagging materials and reach the requirement of building energy conservation 65%, do not need to glue to add lagging material again.Simultaneously because itself unit weight is low, the load-bearing of the buildings also reducing when reducing operational procedure; These goods are to utilize industrial residue to reduce the pressure that waste causes environment, belong to the environmentfriendly products of green non-pollution.
Accompanying drawing explanation
Fig. 1 is preparation method's schema of the present invention.
Embodiment
Embodiment 1
A kind of air-entrained concrete building block, comprises following composition: shale ashes 24.7, breeze 29.7, cement 44.6, gypsum 0.99, suds-stabilizing agent 0.11, regulating the qi flowing in the channels agent 0.3, hydrogen peroxide 5.0, ratio of water to material 0.62 by weight;
1. the preparation method of suds-stabilizing agent, comprises the following steps:
Get 1 weight part oleic acid and mix with 2-4 weight part trolamine, then be diluted with water to the solution that mass concentration is 30-50%, in the solution of dilution, mix the solution quality per-cent that accounts for dilution and be 3-5% ether of cellulose and mix.
2. the preparation method of air-entrained concrete building block, comprises the following steps:
1) pre-treatment of raw material: above-mentioned starting material are mixed in proportion and stir, shale ashes fineness is 6-30%, and 45um tails over, and breeze carries out drying and processing, cement selection 45.2R composite Portland cement;
2) get compound and add water to make slurry, add regulating the qi flowing in the channels agent simultaneously, and slip is stirred, controlling slip diffusibleness is 20-26cm, slurry temperature 20-55 ℃;
3) foaming: add suds-stabilizing agent and hydrogen peroxide in slip, pour immediately die for molding into after stirring 5-30s;
4) quietly stop maintenance: the goods of moulding are put into the quiet chamber of stopping and carried out vapor cure 6-12 hour, temperature 40-60 ℃, humidity 80-95%;
5) steam press maintenance: after goods cutting, 0.8-1.2MPa carries out steam press maintenance 5-9 hour, the 2-3h that boosts, constant voltage 4-6h, step-down 2-3h.As shown in Figure 1.
Product properties: over dry unit weight 255/kg/m
3, ultimate compression strength 1.16/MPa, specific tenacity 4.55 × 10
-3nM/Kg, thermal conductivity 0.0794/W/ (mk).
Embodiment 2
A kind of air-entrained concrete building block, comprises following composition: shale ashes 49.5, breeze 14.9, cement 34.7, gypsum 0.99, suds-stabilizing agent 0.11, regulating the qi flowing in the channels agent 0.3, hydrogen peroxide 4.0, ratio of water to material 0.60 by weight; Preparation method is with embodiment 1.
Product properties: over dry unit weight 286/kg/m
3, ultimate compression strength 1.01/MPa, specific tenacity 3.46 × 10
-3nM/Kg, thermal conductivity 0.0853/W/ (mk).
Embodiment 3
A kind of air-entrained concrete building block, comprises following composition by weight: shale ashes 39.5, breeze 26.3, cement 21.9, useless building block 10.5, gypsum 1.8, suds-stabilizing agent 0.11, regulating the qi flowing in the channels agent 0.3, hydrogen peroxide 3.5, ratio of water to material 0.61; Preparation method is with embodiment 1, and wherein useless building block fineness is 5-20%, and 45um tails over.
Product properties: over dry unit weight 329kg/m
3, ultimate compression strength 1.33/MPa, specific tenacity 4.04 × 10
-3nM/Kg, thermal conductivity 0.1013/W/ (mk).
Embodiment 4
A kind of air-entrained concrete building block, comprises following composition: shale ashes 26.3, breeze 24.8, cement 34.7, flyash 13.3, gypsum 0.99, suds-stabilizing agent 0.11, regulating the qi flowing in the channels agent 0.3, hydrogen peroxide 4.0, ratio of water to material 0.58 by weight; Preparation method is with embodiment 1, and wherein flyash carries out drying and processing.
Product properties: over dry unit weight 294/kg/m
3, ultimate compression strength 1.41/MPa, specific tenacity 4.80 × 10
-3nM/Kg, thermal conductivity 0.0937/W/ (mk).
Embodiment 5
A kind of air-entrained concrete building block, comprises following composition by weight: shale ashes 37.4, breeze 23.4, cement 28, flyash 4.7, useless building block 6, gypsum 1.0, suds-stabilizing agent 0.11, regulating the qi flowing in the channels agent 0.3, hydrogen peroxide 4.0, ratio of water to material 0.60; Preparation method is with implementing 1, and wherein useless building block fineness is 5-20%, and 45um tails over, and flyash carries out drying and processing.
Product properties: over dry unit weight 283/kg/m
3, ultimate compression strength 1.37/MPa, specific tenacity 4.84 × 10
-3nM/Kg, thermal conductivity 0.0895/W/ (mk).
The every finger ticket of air-entrained concrete building block that each embodiment makes is above equal to or higher than national standard,
The concerned countries standard (GB 11968-2006) of autoclave aerated concrete building block performance:
The dry density (kg/m3) of table 1 building block
The intensity rank of table 2 building block
The cubic compressive strength (MPa) of table 3 building block
The thermal conductivity (W/ (mk)) of table 4 building block
Claims (9)
1. an air-entrained concrete building block, it is characterized in that: comprise by weight following composition: cement 20-50 part, shale ashes 20-55 part, breeze 10-40 part, suds-stabilizing agent 0.08-0.12 part, plaster of paris 0.5-3 part, hydrogen peroxide 3-7 part, ratio of water to material 0.58-0.65.
2. Ju air-entrained concrete building block claimed in claim 1, is characterized in that: described cement is composite Portland cement.
3. Ju air-entrained concrete building block claimed in claim 1, it is characterized in that: the preparation method of described suds-stabilizing agent is: the preparation method of suds-stabilizing agent is: get 1 weight part oleic acid and mix with 2-4 weight part trolamine, be diluted with water to again the solution that mass concentration is 30-50%, in the solution of dilution, mix the solution quality per-cent that accounts for dilution and be 3-5% ether of cellulose and mix.
4. Ju air-entrained concrete building block claimed in claim 1, is characterized in that: also comprise regulating the qi flowing in the channels agent 0-0.5 weight part.
5. Ju air-entrained concrete building block claimed in claim 4, is characterized in that: described regulating the qi flowing in the channels agent is: Na
2siO
39H
2o.
6. Ju air-entrained concrete building block claimed in claim 1, is characterized in that: also comprise useless building block 0-20 weight part.
7. Ju air-entrained concrete building block claimed in claim 1, is characterized in that: also comprise flyash 0-15 weight part.
8. the preparation method of air-entrained concrete building block, is characterized in that: comprise the following steps:
1) pre-treatment of raw material: above-mentioned starting material are mixed in proportion and stir, shale ashes fineness is 6-30%, and 45um tails over, and useless building block fineness is 5-20%, and 45um tails over, and flyash and breeze carry out drying and processing, cement selection 45.2R composite Portland cement;
2) get compound and add water to make slurry, and slip is stirred, controlling slip diffusibleness is 20-26cm, slurry temperature 20-55 ℃;
3) foaming: add suds-stabilizing agent and hydrogen peroxide in slip, pour immediately die for molding into after stirring 5-30s;
4) quietly stop maintenance: the goods of moulding are put into the quiet chamber of stopping and carried out vapor cure 6-12 hour, temperature 40-60 ℃, humidity 80-95%;
5) steam press maintenance: after goods cutting, 0.8-1.2MPa carries out steam press maintenance 5-9 hour, the 2-3h that boosts, constant voltage 4-6h, step-down 2-3h.
9. the preparation method of a Ju air-entrained concrete building block claimed in claim 8, it is characterized in that: described step 2) get compound and add water to make slurry, add regulating the qi flowing in the channels agent simultaneously, and slip is stirred, controlling slip diffusibleness is 20-26cm, slurry temperature 20-55 ℃.
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| CN104446618A (en) * | 2014-11-14 | 2015-03-25 | 安徽中龙建材科技有限公司 | Glass fiber autoclaved lightweight concrete (ALC) slab and preparation method thereof |
| CN104446620A (en) * | 2014-11-14 | 2015-03-25 | 安徽中龙建材科技有限公司 | Steel fiber autoclaved aerated concrete (ALC) board and preparation method thereof |
| CN104563379A (en) * | 2014-12-26 | 2015-04-29 | 济南大学 | Preparation method for EPS (expandable polystyrene)-foam cement composite self-insulation vertical wall block |
| CN105110675A (en) * | 2015-07-21 | 2015-12-02 | 广东省建筑材料研究院 | Composite foam stabilizer for autoclaved aerated concrete and preparation method thereof |
| CN105314901A (en) * | 2015-12-07 | 2016-02-10 | 海阳龙凤热电有限公司 | Cementing material used for mine filling and using method thereof |
| CN105503105A (en) * | 2015-12-25 | 2016-04-20 | 河南兴安新型建筑材料有限公司 | Lime-free and low-density autoclaved aerated concrete block and preparation method thereof |
| CN105712672A (en) * | 2016-02-03 | 2016-06-29 | 陈翔 | Lightweight concrete |
| CN105948803A (en) * | 2016-06-02 | 2016-09-21 | 湖州汇能新材料科技有限公司 | Preparing method for aerated concrete products |
| CN105985135A (en) * | 2016-04-06 | 2016-10-05 | 铜陵丰泽建材科技有限公司 | Anti-freezing aerated brick and preparation method thereof |
| CN106242463A (en) * | 2016-07-19 | 2016-12-21 | 仇颖莹 | A kind of preparation method of low unit weight high intensity aerated bricks |
| CN107098725A (en) * | 2017-06-07 | 2017-08-29 | 合肥励仙电力工程有限公司 | A kind of frost-resistant concrete building block and preparation method thereof |
| CN107344836A (en) * | 2017-08-28 | 2017-11-14 | 贵州大学 | A kind of environment-friendly type autoclave aerated concrete building block |
| CN111302751A (en) * | 2020-02-27 | 2020-06-19 | 济南大学 | Wall material composite material |
| CN111302752A (en) * | 2020-03-05 | 2020-06-19 | 贵州美可斯建筑工程技术有限公司 | Polystyrene particle gypsum block and processing method thereof |
| CN112723912A (en) * | 2021-02-06 | 2021-04-30 | 呼伦贝尔学院 | Assembled wall body for fire-free overwintering greenhouse in alpine region |
| CN113462178A (en) * | 2021-07-26 | 2021-10-01 | 群康(上海)新材料科技有限公司 | Modified asphalt and preparation method thereof |
| CN113735613A (en) * | 2021-07-14 | 2021-12-03 | 襄阳华壁新型建材有限公司 | Autoclaved aerated concrete block and preparation method thereof |
| CN114213096A (en) * | 2022-01-13 | 2022-03-22 | 太原钢铁(集团)有限公司 | Preparation method of fly ash autoclaved aerated concrete building block with hydrogen peroxide as foaming agent |
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| CN104446618A (en) * | 2014-11-14 | 2015-03-25 | 安徽中龙建材科技有限公司 | Glass fiber autoclaved lightweight concrete (ALC) slab and preparation method thereof |
| CN104446620A (en) * | 2014-11-14 | 2015-03-25 | 安徽中龙建材科技有限公司 | Steel fiber autoclaved aerated concrete (ALC) board and preparation method thereof |
| CN104563379A (en) * | 2014-12-26 | 2015-04-29 | 济南大学 | Preparation method for EPS (expandable polystyrene)-foam cement composite self-insulation vertical wall block |
| CN105110675A (en) * | 2015-07-21 | 2015-12-02 | 广东省建筑材料研究院 | Composite foam stabilizer for autoclaved aerated concrete and preparation method thereof |
| CN105314901A (en) * | 2015-12-07 | 2016-02-10 | 海阳龙凤热电有限公司 | Cementing material used for mine filling and using method thereof |
| CN105503105A (en) * | 2015-12-25 | 2016-04-20 | 河南兴安新型建筑材料有限公司 | Lime-free and low-density autoclaved aerated concrete block and preparation method thereof |
| CN105712672A (en) * | 2016-02-03 | 2016-06-29 | 陈翔 | Lightweight concrete |
| CN105985135A (en) * | 2016-04-06 | 2016-10-05 | 铜陵丰泽建材科技有限公司 | Anti-freezing aerated brick and preparation method thereof |
| CN105948803A (en) * | 2016-06-02 | 2016-09-21 | 湖州汇能新材料科技有限公司 | Preparing method for aerated concrete products |
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| CN107098725A (en) * | 2017-06-07 | 2017-08-29 | 合肥励仙电力工程有限公司 | A kind of frost-resistant concrete building block and preparation method thereof |
| CN107344836A (en) * | 2017-08-28 | 2017-11-14 | 贵州大学 | A kind of environment-friendly type autoclave aerated concrete building block |
| CN111302751A (en) * | 2020-02-27 | 2020-06-19 | 济南大学 | Wall material composite material |
| CN111302752A (en) * | 2020-03-05 | 2020-06-19 | 贵州美可斯建筑工程技术有限公司 | Polystyrene particle gypsum block and processing method thereof |
| CN112723912A (en) * | 2021-02-06 | 2021-04-30 | 呼伦贝尔学院 | Assembled wall body for fire-free overwintering greenhouse in alpine region |
| CN113735613A (en) * | 2021-07-14 | 2021-12-03 | 襄阳华壁新型建材有限公司 | Autoclaved aerated concrete block and preparation method thereof |
| CN113462178A (en) * | 2021-07-26 | 2021-10-01 | 群康(上海)新材料科技有限公司 | Modified asphalt and preparation method thereof |
| CN114213096A (en) * | 2022-01-13 | 2022-03-22 | 太原钢铁(集团)有限公司 | Preparation method of fly ash autoclaved aerated concrete building block with hydrogen peroxide as foaming agent |
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