CN112723842A - Autoclaved aerated concrete block and preparation method thereof - Google Patents
Autoclaved aerated concrete block and preparation method thereof Download PDFInfo
- Publication number
- CN112723842A CN112723842A CN202110016800.2A CN202110016800A CN112723842A CN 112723842 A CN112723842 A CN 112723842A CN 202110016800 A CN202110016800 A CN 202110016800A CN 112723842 A CN112723842 A CN 112723842A
- Authority
- CN
- China
- Prior art keywords
- aerated concrete
- concrete block
- autoclaved aerated
- parts
- equal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/10—Lime cements or magnesium oxide cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/40—Porous or lightweight materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
- C04B2201/32—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Abstract
The invention discloses an autoclaved aerated concrete block and a preparation method thereof. The autoclaved aerated concrete block is prepared from alkali slag, ground sand, Portland cement, quicklime, a gas former and water, and the preparation method comprises the following steps: 1) mixing the caustic sludge, the ground sand, the silicate cement and the quicklime, adding water, stirring, adding a gas former, stirring to prepare slurry, pouring, standing and maintaining to obtain an aerated concrete blank; 2) and cutting the aerated concrete blank, and then carrying out autoclaved curing to obtain the autoclaved aerated concrete block. The autoclaved aerated concrete block prepared by using the alkali slag to replace gypsum has the advantages of low density, high compressive strength, low drying shrinkage value and high heat conductivity coefficient, not only reduces the production cost, but also realizes the resource utilization of the alkali slag.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to an autoclaved aerated concrete block and a preparation method thereof.
Background
The autoclaved aerated concrete block is a novel building material, and is a porous concrete product prepared by using fly ash, lime, cement, gypsum, slag and the like as main raw materials, adding a proper amount of gas former, regulator and bubble stabilizer, and carrying out the processes of burdening, stirring, pouring, standing, cutting, high-pressure steam curing and the like. The autoclaved aerated concrete block has obvious environment-friendly and energy-saving effects, after gas generation, the volume weight of the block is only about 1/5 of that of a common building brick, and the autoclaved aerated concrete block has excellent characteristics of light weight, earthquake resistance, heat preservation, sound insulation, shrinkage resistance, fire resistance and the like. The gypsum used in the autoclaved aerated concrete block is usually desulfurized gypsum, the gypsum has uneven quality and high impurity content, which can cause the quality fluctuation of the autoclaved aerated concrete block product to be large, and the price of the gypsum is also high.
The caustic sludge is the caustic sludge produced in the process of producing soda by an ammonia-soda process in soda production enterprises, about 0.3 ton of caustic sludge can be produced when 1 ton of soda is produced by the ammonia-soda process, the annual output of the soda production enterprises with 80 ten thousand tons is about 1000 ten thousand yuan per year for caustic sludge treatment, and the burden of the enterprises is large. The main component of the alkaline residue comprises CaCO3、Ca(OH)2、CaSO4·2H2O, etc., the untreated caustic sludge has high water content and poor stability, the pH value is generally more than 9, and soil and water pollution is easily caused by long-term stacking. Therefore, the effective treatment and disposal of the caustic sludge always restrict the sustainable development of the caustic soda manufacturing enterprises.
Disclosure of Invention
The invention aims to provide an autoclaved aerated concrete block.
The invention also aims to provide a preparation method of the autoclaved aerated concrete block.
The technical scheme adopted by the invention is as follows:
an autoclaved aerated concrete block is prepared from the following raw materials in parts by mass:
alkali residue: 5-15 parts;
grinding fine sand: 60-70 parts;
portland cement: 10-15 parts;
quick lime: 10-15 parts;
a gas former: 0.07 to 0.09 portion;
water: 50 to 60 portions.
Preferably, the autoclaved aerated concrete block is prepared from the following raw materials in parts by mass:
alkali residue: 10 parts of (A);
grinding fine sand: 65 parts of (1);
portland cement: 12 parts of (1);
quick lime: 12 parts of (1);
a gas former: 0.08 part;
water: and 55 parts.
Preferably, CaSO is contained in the alkaline residue4·2H2The content of O is 10 to 20 percent.
Preferably, the screen allowance of the caustic sludge passing through a 0.043mm square-hole screen is less than or equal to 5 percent.
Preferably, the water content of the caustic sludge is 35-40%.
Preferably, the SiO of the ground sand2The content is more than or equal to 85 percent, and the content of mud is less than or equal to 5 percent.
Preferably, the specific surface area of the fine sand is more than or equal to 350m2/kg, median particle diameter less than or equal to 0.035 mm.
Preferably, the content of the available calcium of the quicklime is more than or equal to 75 percent, the content of the magnesium oxide is less than or equal to 3 percent, the digestion time is more than or equal to 10min, and the digestion temperature is more than or equal to 83 ℃.
Preferably, the screen allowance of the quicklime passing through a 0.08mm square-hole screen is less than or equal to 13 percent.
Preferably, the gas former is aluminum powder.
The preparation method of the autoclaved aerated concrete block comprises the following steps:
1) mixing the alkaline residue, the ground sand, the silicate cement and the quicklime, adding water, stirring, adding a gas former, stirring to prepare slurry, pouring, standing and maintaining to obtain an aerated concrete blank;
2) and cutting the aerated concrete blank, and then carrying out autoclaved curing to obtain the autoclaved aerated concrete block.
Preferably, the preparation method of the autoclaved aerated concrete block comprises the following steps:
1) mixing the caustic sludge, the ground sand, the silicate cement and the quicklime, adding water with the temperature of 45-50 ℃, stirring, adding a gas former, stirring for 30-45 s to prepare slurry, pouring, standing and maintaining for 2.5-3.5 h to obtain an aerated concrete blank;
2) and cutting the aerated concrete blank, and then carrying out autoclaved curing to obtain the autoclaved aerated concrete block.
The strength forming process of the autoclaved aerated concrete block is divided into two stages: the first stage is a standing maintenance stage, the slurry expands along with the gas generation of the gas generating agent, and simultaneously, the Portland cement and the quick lime are quickly hydrated to thicken the slurry to generate high-alkalinity hydrated calcium silicate to form initial strength; and the second stage is an autoclaved curing stage, and is excited by high temperature, the aerated concrete blank body rapidly generates a hydrothermal reaction to generate low-alkalinity calcium silicate hydrate, and meanwhile, the low-alkalinity calcium silicate hydrate is converted to tobermorite, the blank body strength is greatly improved, and finally the finished product building block is obtained.
The invention has the beneficial effects that: the autoclaved aerated concrete block prepared by using the alkali slag to replace gypsum has the advantages of low density, high compressive strength, low drying shrinkage value and high heat conductivity coefficient, not only reduces the production cost, but also realizes the resource utilization of the alkali slag.
Specifically, the method comprises the following steps:
1) the method for preparing the autoclaved aerated concrete block by using the alkali slag to replace the gypsum realizes recycling of the alkali slag, can consume the stock of the alkali slag, solves the problem that the alkali slag cannot be effectively treated for a long time, solves the problem that the autoclaved aerated concrete block containing the desulfurized gypsum has large product quality fluctuation, and reduces the production cost of the autoclaved aerated concrete block;
2) the invention replaces partial fine sand with the alkaline residue on the premise of not influencing various performances of the autoclaved aerated concrete block;
3) the alkaline residue is used for replacing gypsum, so that the alkalinity of slurry can be improved, aluminum powder gas generation is facilitated in the first stage of building block strength formation, the gas generation expansion rate can be improved by 7% at most, particularly for slurry with large initial consistency, a good air hole structure is facilitated to be formed, and 3% -5% of raw materials can be saved in the production process compared with an autoclaved aerated concrete building block containing desulfurized gypsum;
4) the autoclaved aerated concrete block does not need to be added with a foam stabilizer and a water reducing agent, and also does not need to be added with gypsum, so that the performance of the block can reach the standard requirement;
5) the autoclaved aerated concrete block has stable static gas generation process, shorter static curing time than the autoclaved aerated concrete block containing the desulfurized gypsum, improved production rate and no longer curing time;
6) the autoclaved aerated concrete block has good strength index and heat insulation performance, and the dry density of the block is less than 625kg/m according to the test of the prepared finished block of GB/T11969-2008' autoclaved aerated concrete Performance test method3The compression strength is more than 3.5MPa, the requirements of B06 level building block strength and dry density are met, the compression strength is higher than that of autoclaved aerated concrete building blocks containing desulfurized gypsum, the drying shrinkage value is between 0.42mm/m and 0.45mm/m, the heat conductivity coefficient is 0.14W/(m.K), and the compression strength meets the standard specification.
Detailed Description
The invention will be further explained and illustrated with reference to specific examples.
Example 1:
the autoclaved aerated concrete block comprises the following raw materials in percentage by weight:
table 1 table of compositions of raw materials for autoclaved aerated concrete blocks
The preparation method of the autoclaved aerated concrete block comprises the following steps:
1) adding the caustic sludge, the ground sand, the silicate cement and the quicklime into a stirrer, adding water at 50 ℃, stirring for 3min, adding aluminum powder, stirring for 40s to prepare slurry, pouring, controlling the slurry pouring temperature at 45 ℃, standing and maintaining for 3h to obtain an aerated concrete blank;
2) and cutting the aerated concrete blank, then feeding the cut aerated concrete blank into an autoclave, and carrying out autoclave curing to obtain the autoclaved aerated concrete block.
Example 2:
the autoclaved aerated concrete block comprises the following raw materials in percentage by weight:
TABLE 2 table of compositions of raw materials for autoclaved aerated concrete blocks
The preparation method of the autoclaved aerated concrete block comprises the following steps:
1) adding the caustic sludge, the ground sand, the silicate cement and the quicklime into a stirrer, adding water at 50 ℃, stirring for 3min, adding aluminum powder, stirring for 40s to prepare slurry, pouring, controlling the slurry pouring temperature at 45 ℃, standing and maintaining for 3h to obtain an aerated concrete blank;
2) and cutting the aerated concrete blank, then feeding the cut aerated concrete blank into an autoclave, and carrying out autoclave curing to obtain the autoclaved aerated concrete block.
Example 3:
the autoclaved aerated concrete block comprises the following raw materials in percentage by weight:
table 3 table of compositions of raw materials for autoclaved aerated concrete blocks
The preparation method of the autoclaved aerated concrete block comprises the following steps:
1) adding the caustic sludge, the ground sand, the silicate cement and the quicklime into a stirrer, adding water at 50 ℃, stirring for 3min, adding aluminum powder, stirring for 40s to prepare slurry, pouring, controlling the slurry pouring temperature at 45 ℃, standing and maintaining for 3h to obtain an aerated concrete blank;
2) and cutting the aerated concrete blank, then feeding the cut aerated concrete blank into an autoclave, and carrying out autoclave curing to obtain the autoclaved aerated concrete block.
Example 4:
the autoclaved aerated concrete block comprises the following raw materials in percentage by weight:
table 4 table of compositions of raw materials for autoclaved aerated concrete blocks
The preparation method of the autoclaved aerated concrete block comprises the following steps:
1) adding the caustic sludge, the ground sand, the silicate cement and the quicklime into a stirrer, adding water at 50 ℃, stirring for 3min, adding aluminum powder, stirring for 40s to prepare slurry, pouring, controlling the slurry pouring temperature at 45 ℃, standing and maintaining for 3h to obtain an aerated concrete blank;
2) and cutting the aerated concrete blank, then feeding the cut aerated concrete blank into an autoclave, and carrying out autoclave curing to obtain the autoclaved aerated concrete block.
Example 5:
the autoclaved aerated concrete block comprises the following raw materials in percentage by weight:
TABLE 5A table of the composition of the raw materials of autoclaved aerated concrete blocks
The preparation method of the autoclaved aerated concrete block comprises the following steps:
1) adding the caustic sludge, the ground sand, the silicate cement and the quicklime into a stirrer, adding water at 50 ℃, stirring for 3min, adding aluminum powder, stirring for 40s to prepare slurry, pouring, controlling the slurry pouring temperature at 45 ℃, standing and maintaining for 3h to obtain an aerated concrete blank;
2) and cutting the aerated concrete blank, then feeding the cut aerated concrete blank into an autoclave, and carrying out autoclave curing to obtain the autoclaved aerated concrete block. Comparative example 1:
the autoclaved aerated concrete block comprises the following raw materials in percentage by weight:
TABLE 6A table of the composition of the raw materials of autoclaved aerated concrete blocks
The preparation method of the autoclaved aerated concrete block comprises the following steps:
1) adding gypsum, ground sand, portland cement and quicklime into a stirrer, adding water at 50 ℃, stirring for 3min, adding aluminum powder, stirring for 40s to prepare slurry, pouring, controlling the slurry pouring temperature at 45 ℃, standing and maintaining for 3h to obtain an aerated concrete blank;
2) and cutting the aerated concrete blank, then feeding the cut aerated concrete blank into an autoclave, and carrying out autoclave curing to obtain the autoclaved aerated concrete block. And (3) performance testing:
1) the slurries of examples 1-3 and comparative example 1, step 1) were tested for their performance (initial consistency, gas swell height and standing cure time) and the results are shown in the following table:
table 7 slurry performance test results
| Test items | Example 1 | Example 2 | Example 3 | Comparative example 1 |
| Initial consistency (mm) | 316 | 300 | 280 | 310 |
| Height of gas development expansion (%) | 75 | 70 | 66 | 68 |
| Rest maintenance time (min) | 155 | 150 | 140 | 160 |
Note:
initial consistency: the method is carried out by adopting a special tester for aerated concrete, and the tester is in a hollow cylindrical barrel shape, and has an inner diameter of 50mm, an outer diameter of 56mm and a height of 100 mm. The testing process comprises the following steps: selecting a glass plate with a large enough area, wetting in advance, wiping the glass plate with a wet towel to dry the surface of the glass plate, placing a tester in the center of the glass plate, quickly pouring the aerated concrete slurry after stirring into the tester, quickly lifting the tester until the slurry surface at the top of the tester is required to just reach the top of the tester, uniformly dispersing the slurry on the glass plate under the self gravity, measuring the diameters of the slurry in two longest extension directions by using a steel ruler after the slurry is stabilized, and taking the average number of the diameters as the initial consistency of the slurry.
Gas expansion height (gas generating capacity of test slurry): and (3) taking 100mL of the stirred slurry immediately, pouring the slurry into a measuring cylinder with a 250mL measuring range by using a funnel, recording the value of the liquid level in the measuring cylinder until the indication value is not changed any more, and finally increasing the value to be the gas forming expansion height of the slurry.
Static maintenance time (test block production smoothness and continuous production capacity): the slurry can be demoulded and put into a kettle for steam pressure curing for the time required from pouring, mould entering and pre-curing.
As can be seen from Table 7: compared with the slurry of the comparative example 1, the slurry of the example 1 has larger initial consistency, better gas forming capability and less static curing time, which shows that the autoclaved aerated concrete block slurry obtained by replacing gypsum with alkali slag has more excellent performance.
2) The properties (compressive strength, dry density, drying shrinkage value and thermal conductivity) of the autoclaved aerated concrete blocks of examples 1-5 and comparative example 1 were tested, and the test results are shown in the following table:
TABLE 8 Performance test results for autoclaved aerated concrete blocks
| Test items | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Comparative example 1 |
| Compressive strength (MPa) | 3.74 | 3.86 | 3.66 | 3.60 | 3.82 | 3.61 |
| Dry density (kg/m)3) | 605 | 612 | 622 | 585 | 620 | 610 |
| Drying shrinkage value (mm/m) | 0.45 | 0.42 | 0.44 | 0.40 | 0.42 | 0.42 |
| Thermal conductivity (W/(m.K)) | 0.14 | 0.14 | 0.14 | 0.14 | 0.14 | 0.14 |
Note:
compressive strength: the test is carried out according to the GB/T11969-2008 autoclaved aerated concrete performance test method; and selecting test pressing blocks, drying the test pressing blocks in an electrothermal blowing drying oven at 60 ℃ until the water content is 10%, and then testing by using a compression testing machine.
Dry density: the test is carried out according to the GB/T11969-2008 autoclaved aerated concrete performance test method; and drying the test block in an electrothermal blowing drying box at 105 ℃ to constant weight, measuring the axial sizes of the test block in the length direction, the width direction and the height direction, calculating to obtain the volume of the test block, and further obtaining the dry density of the test block.
Drying shrinkage value: the test is carried out according to a rapid test method in GB/T11969-2008 autoclaved aerated concrete performance test method.
Coefficient of thermal conductivity: the test is carried out according to the GB/T11969-2008 autoclaved aerated concrete performance test method.
As can be seen from Table 8:
1) compared with the autoclaved aerated concrete block of the comparative example 1, the autoclaved aerated concrete block of the embodiment 1 has higher compressive strength, which shows that the autoclaved aerated concrete block obtained by using the alkali slag to replace gypsum has more excellent performance;
2) the autoclaved aerated concrete block belongs to the grade of B06, and the dry density of the block is not more than 625kg/m3The compression strength is more than or equal to 3.5MPa, the drying shrinkage value is between 0.42mm/m and 0.45mm/m, and the heat conductivity coefficient can reach 0.14W/(m.K), which all meet the specification.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (10)
1. The autoclaved aerated concrete block is characterized by being prepared from the following raw materials in parts by mass:
alkali residue: 5-15 parts;
grinding fine sand: 60-70 parts;
portland cement: 10-15 parts;
quick lime: 10-15 parts;
a gas former: 0.07 to 0.09 portion;
water: 50 to 60 portions.
2. The autoclaved aerated concrete block according to claim 1, characterized in that: the feed is prepared from the following raw materials in parts by mass:
alkali residue: 10 parts of (A);
grinding fine sand: 65 parts of (1);
portland cement: 12 parts of (1);
quick lime: 12 parts of (1);
a gas former: 0.08 part;
water: and 55 parts.
3. The autoclaved aerated concrete block according to claim 1 or 2, characterized in that: CaSO in the alkaline residue4·2H2The content of O is 10 to 20 percent.
4. The autoclaved aerated concrete block according to claim 3, characterized in that: the screen allowance of the caustic sludge passing through a 0.043mm square hole screen is less than or equal to 5 percent.
5. The autoclaved aerated concrete block according to claim 4, characterized in that: the water content of the caustic sludge is 35-40%.
6. The autoclaved aerated concrete block according to claim 1 or 2, characterized in that: SiO of the ground sand2The content is more than or equal to 85 percent, and the content of mud is less than or equal to 5 percent.
7. According to claim 6The autoclaved aerated concrete block is characterized in that: the specific surface area of the ground sand is more than or equal to 350m2/kg, median particle diameter less than or equal to 0.035 mm.
8. The autoclaved aerated concrete block according to claim 1 or 2, characterized in that: the content of the effective calcium of the quicklime is more than or equal to 75 percent, the content of the magnesium oxide is less than or equal to 3 percent, the digestion time is more than or equal to 10min, and the digestion temperature is more than or equal to 83 ℃.
9. The autoclaved aerated concrete block according to claim 8, characterized in that: the screen allowance of the quicklime passing through a 0.08mm square-hole screen is less than or equal to 13 percent.
10. The preparation method of the autoclaved aerated concrete block as set forth in any one of claims 1 to 9, characterized by comprising the steps of:
1) mixing the alkaline residue, the ground sand, the silicate cement and the quicklime, adding water, stirring, adding a gas former, stirring to prepare slurry, pouring, standing and maintaining to obtain an aerated concrete blank;
2) and cutting the aerated concrete blank, and then carrying out autoclaved curing to obtain the autoclaved aerated concrete block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110016800.2A CN112723842A (en) | 2021-01-07 | 2021-01-07 | Autoclaved aerated concrete block and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110016800.2A CN112723842A (en) | 2021-01-07 | 2021-01-07 | Autoclaved aerated concrete block and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112723842A true CN112723842A (en) | 2021-04-30 |
Family
ID=75590865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110016800.2A Pending CN112723842A (en) | 2021-01-07 | 2021-01-07 | Autoclaved aerated concrete block and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112723842A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102424604A (en) * | 2011-08-12 | 2012-04-25 | 刘应贵 | Method for producing gas-filled light building blocks by using alkaline residue |
| WO2016019774A1 (en) * | 2014-08-06 | 2016-02-11 | 华南理工大学 | Method for preparing chlorine-removal alkali residue mixture by utilizing alkali residues through ammonia-soda process and application thereof |
| CN105669146A (en) * | 2016-02-02 | 2016-06-15 | 福州大学 | Autoclaved aerated concrete block containing neutral sodium-salt alkali activated slag concrete and preparation method of autoclaved aerated concrete block |
| CN108424094A (en) * | 2018-04-28 | 2018-08-21 | 武汉科技大学 | A kind of building waste/alkaline residue base autoclave aerated concrete building block and preparation method thereof |
| CN109422514A (en) * | 2017-08-29 | 2019-03-05 | 新特能源股份有限公司 | Air-entrained concrete building block and preparation method thereof |
-
2021
- 2021-01-07 CN CN202110016800.2A patent/CN112723842A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102424604A (en) * | 2011-08-12 | 2012-04-25 | 刘应贵 | Method for producing gas-filled light building blocks by using alkaline residue |
| WO2016019774A1 (en) * | 2014-08-06 | 2016-02-11 | 华南理工大学 | Method for preparing chlorine-removal alkali residue mixture by utilizing alkali residues through ammonia-soda process and application thereof |
| CN105669146A (en) * | 2016-02-02 | 2016-06-15 | 福州大学 | Autoclaved aerated concrete block containing neutral sodium-salt alkali activated slag concrete and preparation method of autoclaved aerated concrete block |
| CN109422514A (en) * | 2017-08-29 | 2019-03-05 | 新特能源股份有限公司 | Air-entrained concrete building block and preparation method thereof |
| CN108424094A (en) * | 2018-04-28 | 2018-08-21 | 武汉科技大学 | A kind of building waste/alkaline residue base autoclave aerated concrete building block and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 梁咏宁等: "环保型蒸压砂加气混凝土砌块的制备研究", 《墙材革新与建筑节能》 * |
| 虞焕新等: "《建筑工程基础（下）》", 30 June 2005, 中国地质大学出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110642585B (en) | Aerated concrete block and preparation process thereof | |
| CN105541384B (en) | A kind of ultralight foam concrete and preparation method thereof | |
| CN113968701B (en) | CO (carbon monoxide) 2 Light concrete for driving consolidation and preparation method thereof | |
| CN112500011B (en) | Preparation method of carbonized steel slag lightweight aggregate and concrete containing carbonized steel slag lightweight aggregate | |
| CN111423160B (en) | Light geopolymer thermal insulation material and preparation method thereof | |
| CN105777184B (en) | Autoclaved aerated concrete building block adopting ceramic polishing waste and preparation method thereof | |
| CN110734300A (en) | aerated concrete blocks and preparation process thereof | |
| CN113716924B (en) | Autoclaved aerated concrete block and preparation method thereof | |
| CN110105013A (en) | A kind of high-strength cracking resistance foam concrete and preparation method thereof | |
| CN109626932B (en) | Autoclaved aerated concrete plate and preparation method thereof | |
| CN113620646B (en) | High-alumina fly ash self-insulation autoclaved aerated concrete block and preparation method thereof | |
| KR100947926B1 (en) | Manufacturing method of hydro-thermal reaction lightweight foam concrete using waste concrete sludge | |
| CN103113075A (en) | Low-density aerated concrete product and preparation method thereof | |
| CN106278029B (en) | A kind of alkali-activated carbonatite large-doping-amount fly ash cement foaming insulation board and preparation method thereof | |
| CN102745959B (en) | Ceramsite self-insulation building block and preparation method | |
| CN102875181A (en) | Expanded Polystyrene (EPS) light aggregate concrete and preparation method thereof | |
| CN106316443A (en) | Fly ash aerated concrete blocks with sinter-dried desulfurization ash and preparation method thereof | |
| CN112079597A (en) | Carbonized cement paste powder high-ductility fiber cement composite material and preparation method thereof | |
| CN112723842A (en) | Autoclaved aerated concrete block and preparation method thereof | |
| CN114605134A (en) | High-strength low-density autoclaved aerated concrete and preparation method thereof | |
| CN114890809A (en) | Steel slag-based high-carbon-fixation-quantity non-autoclaved aerated concrete and preparation method thereof | |
| CN115385623A (en) | Carbon absorption foam concrete based on industrial waste residues and preparation method thereof | |
| CN112250467B (en) | Sepiolite aerated concrete block and preparation process thereof | |
| CN114988835A (en) | Carbide slag-based high-solid-carbon-content non-autoclaved aerated concrete and preparation method thereof | |
| CN114538874A (en) | Method for preparing autoclaved aerated concrete block by utilizing copper tailing wet milling heating activation technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210430 |
|
| RJ01 | Rejection of invention patent application after publication |