CN115340345A - High-coating-rate gypsum-based plastering mortar - Google Patents
High-coating-rate gypsum-based plastering mortar Download PDFInfo
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- CN115340345A CN115340345A CN202210774248.8A CN202210774248A CN115340345A CN 115340345 A CN115340345 A CN 115340345A CN 202210774248 A CN202210774248 A CN 202210774248A CN 115340345 A CN115340345 A CN 115340345A
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- 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
- C04B28/14—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 calcium sulfate cements
- C04B28/142—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 calcium sulfate cements containing synthetic or waste calcium sulfate cements
- C04B28/144—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 calcium sulfate cements containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being a flue gas desulfurization product
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- 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
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00482—Coating or impregnation materials
- C04B2111/00508—Cement paints
-
- 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
- C04B2201/10—Mortars, concrete or artificial stone characterised by specific physical values for the viscosity
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The gypsum-based plastering mortar material comprises 50 to 90 parts by weight of gypsum clinker prepared from gypsum raw materials, 5 to 15 parts by weight of vitrified micro bubbles, 5 to 20 parts by weight of heavy calcium carbonate, 0.001 to 0.2 part by weight of retarder, 0.1 to 0.5 part by weight of cellulose ether, 0.05 to 0.3 part by weight of starch ether and 0.5 to 6 parts by weight of calcined product; the calcined product is a calcined product of fly ash and calcium sulfate; optionally, the calcium sulphate is selected from any one or more of calcium sulphate dihydrate, calcium sulphate hemihydrate and calcium sulphate anhydrite. The gypsum-based plastering mortar uses the desulfurized building gypsum as a raw material, realizes resource utilization of the desulfurized gypsum, and has the characteristics of good construction effect, low comprehensive cost and high coating rate.
Description
Technical Field
The present invention relates to, but is not limited to, the technical field of novel building materials, and particularly relates to, but is not limited to, a gypsum-based plastering mortar.
Background
The gypsum is used as a green environment-friendly building material, has a plurality of excellent performances, and is a building material commonly used for decoration. The gypsum-based plastering mortar is a novel replacement type inner wall plastering material formed by combining gypsum, aggregate, an additive and mixing water. In foreign countries, the lightweight plastering material is the most utilized inner wall plastering material, and the usage amount of the lightweight plastering material in China is rapidly increased in recent years. Compared with the traditional cement mortar, the interior wall plastering gypsum mortar has the advantages of light volume weight, heat preservation and sound insulation, energy conservation and emission reduction, quick setting and hardening, short construction period, good construction quality, excellent performance and the like, and becomes one of the novel building materials which are rapidly developed in recent years in China.
Disclosure of Invention
The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.
The application provides gypsum-based plastering mortar prepared by using gypsum clinker, which has higher coating rate and good construction performance and can be directly coated on the surface of a building wall or pasted on the surface of the building wall after being cast into a prefabricated plate in a cast-in-place manner.
The gypsum-based plastering mortar material comprises 50 to 90 parts by weight of gypsum clinker prepared from gypsum raw materials, 5 to 15 parts by weight of vitrified micro bubbles, 5 to 20 parts by weight of heavy calcium carbonate, 0.001 to 0.2 part by weight of retarder, 0.1 to 0.5 part by weight of cellulose ether, 0.05 to 0.3 part by weight of starch ether and 0.5 to 6 parts by weight of calcined product;
the calcined product is a calcined product of fly ash and calcium sulfate;
in one embodiment provided herein, the gypsum-based plastering mortar material consists only of 50 to 90 parts by weight of gypsum clinker prepared from gypsum raw materials, 5 to 15 parts by weight of vitrified beads, 5 to 20 parts by weight of triple superphosphate, 0.001 to 0.2 parts by weight of retarder, 0.1 to 0.5 parts by weight of cellulose ether and 0.05 to 0.3 parts by weight of starch ether, and 0.5 to 6 parts by weight of calcined product.
In one embodiment provided herein, the calcium sulfate is selected from any one or more of calcium sulfate dihydrate, calcium sulfate hemihydrate, and calcium sulfate anhydrite.
In one embodiment provided herein, the weight ratio of the fly ash to calcium sulfate in the raw material of the calcined product is (0.5 to 5): 1;
in one embodiment provided herein, the fly ash and calcium sulfate are calcined at a temperature of 700 ℃ to 1100 ℃;
in one embodiment provided herein, the calcination time of the fly ash and calcium sulfate is 20min to 2h. Optionally, calcining for 20min to 2h, and naturally cooling to room temperature for storage.
In one embodiment provided herein, the retarder is selected from any one or more of a protein retarder, a modified amino acid salt retarder, a boric acid retarder, a citric acid retarder, a tartaric acid retarder, borax, slaked lime, and a phosphate retarder (sodium hexametaphosphate, sodium polyphosphate, and ammonium phosphate).
In one embodiment provided herein, the cellulose ether has a viscosity of from 300 mpa-s to 100000 mpa-s;
in one embodiment provided herein, the cellulose ether is selected from any one or more of hydroxypropyl methyl cellulose ether, and hydroxyethyl methyl cellulose ether;
in one embodiment provided herein, the starch ether is selected from any one or more of hydroxypropyl starch ether, hydroxyalkyl starch, carboxymethyl starch, and starch ethers obtained by modifying natural polymers of polysaccharides.
In one embodiment provided herein, the gypsum clinker has a dry volume weight of 500 to 900g/L;
in one embodiment provided herein, the gypsum clinker has a particle size of 80 mesh to 100 mesh.
In one embodiment provided by the application, the ion content in the desulfurized gypsum raw material for preparing desulfurized building gypsum meets the standard requirements of Chinese national standard GB/T37785-2019 flue gas desulfurized gypsum.
In one embodiment, the gypsum-based plastering mortar material further comprises 0 to 2 parts by weight of latex powder and 0 to 5 parts by weight of mineral fiber based on 50 to 90 parts by weight of gypsum clinker prepared from a gypsum raw material.
In one embodiment provided herein, the mineral fibers are selected from any one or more of sepiolite fibers, alumina silicate fibers, glass fibers, and gypsum fibers.
In one embodiment provided herein, the latex powder is selected from any one or more of a vinyl acetate-ethylene copolymer and a vinyl acetate homopolymer;
in one embodiment provided herein, the latex powder has a minimum film forming temperature of 0 ℃ to 4 ℃;
in one embodiment provided herein, the density of the vitrified micro bubbles is 80kg/m 3 To 110kg/m 3 。
In the embodiment of the application, the expanded and vitrified bead meets the requirements of Chinese building material industry standard JC/T1042-2007 expanded and vitrified bead, and the physical and mechanical performance index meets the requirements of I and II standards.
In another aspect, the present application provides a method for preparing the gypsum-based plastering mortar material, comprising the following steps: uniformly mixing the desulfurized gypsum clinker, the retarder, the latex powder, the cellulose ether and the starch ether to prepare premixed powder; and then uniformly mixing the premixed powder, the calcined product, the vitrified micro bubbles, the mineral fibers and the heavy calcium carbonate.
In yet another aspect, the present application provides a gypsum-based plastering mortar, comprising the above gypsum-based plastering mortar material and water;
in one embodiment provided herein, the gypsum-based render mortar material and water are present in a weight ratio of 1 (0.30 to 0.95).
In one embodiment provided herein, the amount of water is determined according to the method of "determination of water usage for standard diffusivity" in the national standard GB/T28627-2012.
In yet another aspect, the present application provides the use of a composition comprising, in parts by weight, 50 to 90 parts of gypsum clinker prepared from gypsum raw materials, 5 to 15 parts of vitrified microbeads, 5 to 20 parts of triple superphosphate, 0.001 to 0.2 parts of retarder, 0.1 to 0.5 parts of cellulose ether and 0.05 to 0.3 parts of starch ether, and 0.5 to 6 parts of calcined product, for increasing the coating rate of a gypsum-based mortar.
The gypsum-based plastering mortar uses desulfurized building gypsum as a main raw material, and therefore is completely different from a traditional plastering mortar system and has a high coating rate. Meanwhile, the porous structure of the gypsum enables the gypsum to have the advantages of environmental protection, quick construction, heat preservation and the like.
The gypsum-based plastering mortar has high strength and strong bonding force with a base layer, and each performance meets the specified requirements of plastering gypsum in Chinese national standard GB/T28627-2012 plastering gypsum. Compared with the existing mortar, the gypsum-based plastering mortar has the following advantages:
1. the desulfurized building gypsum is used as a main raw material, so that the resource utilization of the desulfurized gypsum is realized, and the heat insulation performance of the plastering mortar is improved.
2. The building envelope has good heat insulation performance, and can effectively reduce the energy consumption of the building envelope; meanwhile, the sound insulation, temperature adjustment and humidity adjustment performances are good.
3. The coating rate is higher than or equal to 160m 2 The gypsum-based plastering mortar material has the advantages of saving materials, effectively improving the service performance of the mortar and reducing the construction cost (coating thickness is 1cm, and the weight ratio of the gypsum-based plastering mortar material to water is 1 (0.30-0.95)). And the gypsum-based plastering mortar has small drying shrinkage or hardening shrinkage.
4. The mixing amount of various additives is optimized, the coordination and coordination effects of the various additives are exerted to the greatest extent on the premise of reducing the use amount of the additives, and the performance of the plastering mortar is optimized.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the application. Other advantages of the present application may be realized and attained by the invention in its aspects as described in the specification.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, embodiments of the present application are described in detail below. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The desulfurized building gypsum clinker used in the following examples is prepared by self-calcination, and the volume weight of the gypsum clinker is about 850g/L, and the granularity is 80 meshes to 100 meshes.
The retarder used in the examples and comparative examples was Retardan-2000P (modified amino acid salt based retarder) from Shanghai south-Henan trade, inc. The retarder used in the examples was also hexametaphosphate, available from Beijing GmbH, a national pharmaceutical group chemical reagent.
The rubber powder used in the examples and comparative examples was a vinyl acetate-ethylene copolymer (minimum film forming temperature of 4 ℃ C.), a Wake 5010N redispersible latex powder from Guangdong lake science Co., ltd.
The cellulose ethers used in the examples and comparative examples were hydroxyethyl cellulose ether (60000 viscosity) from shanghai south trade ltd, trade mark M6456;
the starch ethers used in the examples and comparative examples were hydroxypropyl starch ether, available from Tokyo technologies, inc. and 301 brand;
the mineral fibers used in the examples and comparative examples were glass fibers having an average length of 6mm and an average diameter of 13 μm.
The vitrified small balls used in the examples and comparative examples were expanded vitrified small balls having a density of 92kg/m 3 70 meshes to 90 meshes.
The fly ash used in the examples and comparative examples was purchased from thermal power plants, grade II fly ash, in whitehill cities.
Examples and comparative examples
1. Preparation of gypsum-based plastering material
Step 0: calcining the desulfurized gypsum raw material and the fly ash (the weight ratio is 1:1) at 800 ℃ for 1h, preserving the heat for 30min, and naturally cooling to room temperature to obtain a calcined product;
step 1: weighing the components in parts by weight in Table 1;
step 2: uniformly mixing the desulfurized building gypsum clinker, the retarder, the latex powder, the cellulose ether and the starch ether to obtain premixed powder;
and step 3: uniformly mixing the premixed powder obtained in the step 2 with a calcined product, vitrified microbeads, mineral fibers and heavy calcium carbonate (the granularity is 150-400 meshes) to obtain a mixture;
and 4, step 4: the water was mixed in the amounts shown in Table 1.
And 5: and (4) mixing the gypsum-based plastering material prepared in the step (3) with the mixing water weighed in the step (4) to prepare the gypsum-based plastering mortar.
The retarder of example 1 and example 2 was Retardan-2000P0.5 parts to + sodium hexametaphosphate 0.2 parts; the retarder in example 3, comparative example 1 and comparative example 2 was Retardan-2000P. As shown in table 1.
TABLE 1
Test example 1
The setting time, the water retention rate, the flexural strength and the compressive strength of the gypsum-based plastering mortar prepared by the method are tested according to the method specified in the Chinese national standard GB/T28627-2012 plastering Gypsum. The tensile bond strength of the gypsum-based plastering mortar prepared above was tested according to the method specified in the building industry construction standard of china JGJ/70-2009 "test method for basic performance of building mortar", as shown in table 2.
TABLE 2
As can be seen from Table 2, the performance of the plastering mortar prepared by the method meets the national standard requirements, and the performance is equivalent to that of other mortars except that the coating rate is greatly improved.
The gypsum-based plastering mortar prepared in the embodiment of the application greatly increases the coating rate of the gypsum-based mortar, improves the construction efficiency and the survival rate, and can use less materials to coat more areas.
Claims (10)
1. A gypsum-based plastering mortar material, wherein the gypsum-based plastering mortar material comprises 50 to 90 parts by weight of gypsum clinker prepared from a gypsum raw material, 5 to 15 parts by weight of vitrified microbeads, 5 to 20 parts by weight of triple superphosphate, 0.001 to 0.2 part by weight of retarder, 0.1 to 0.5 part by weight of cellulose ether and 0.05 to 0.3 part by weight of starch ether, and 0.5 to 6 parts by weight of calcined product;
the calcined product is a calcined product of fly ash and calcium sulfate;
optionally, the calcium sulphate is selected from any one or more of calcium sulphate dihydrate, calcium sulphate hemihydrate and calcium sulphate anhydrite.
2. The gypsum-based render mortar material of claim 1, wherein the raw material of the calcined product has a weight ratio of the fly ash to calcium sulfate of (0.5 to 5): 1;
optionally, the calcination temperature of the fly ash and calcium sulfate is 700 ℃ to 1100 ℃;
optionally, the calcination time of the fly ash and the calcium sulfate is 20min to 2h.
3. The gypsum-based render mortar material of claim 1, wherein the set retarder is selected from any one or more of a protein set retarder, a modified amino acid salt set retarder, a boric acid set retarder, a citric acid set retarder, a tartaric acid set retarder, borax, slaked lime, and a phosphate set retarder.
4. The gypsum-based render mortar material of claim 1, wherein the cellulose ether has a viscosity of from 300 mpa-s to 100000 mpa-s;
optionally, the cellulose ether is selected from any one or more of hydroxypropyl methyl cellulose ether, and hydroxyethyl methyl cellulose ether;
the starch ether is selected from one or more of hydroxypropyl starch ether, hydroxyalkyl starch, carboxymethyl starch and starch ether obtained by modifying natural polymers of polysaccharides.
5. The gypsum-based render mortar material of claim 1, wherein the gypsum clinker has a dry volume weight of from 500 to 900g/L;
optionally, the desulfurized building gypsum has a particle size of from 80 mesh to 100 mesh.
6. The gypsum-based plastering mortar material of claim 1, wherein the gypsum-based plastering mortar material further comprises 0 to 2 parts by weight of latex powder and 0 to 5 parts by weight of mineral fiber, based on 50 to 90 parts by weight of a gypsum clinker prepared from a gypsum raw material.
7. The gypsum-based render mortar material of claim 6, wherein the mineral fibers are selected from any one or more of sepiolite fibers, aluminum silicate fibers, glass fibers, and gypsum fibers.
8. The gypsum-based render mortar material of claim 6 or 7, wherein the latex powder is selected from any one or more of a vinyl acetate-ethylene copolymer and a vinyl acetate homopolymer;
optionally, the lowest film forming temperature of the latex powder is 0 ℃ to 4 ℃;
optionally, the density of the vitrified micro bubbles is 80kg/m 3 To 110kg/m 3 。
9. Method for the preparation of a gypsum-based render mortar material according to any one of claims 6 to 8, comprising the following steps: uniformly mixing the desulfurized gypsum clinker, the retarder, the latex powder, the cellulose ether and the starch ether to prepare premixed powder; and then uniformly mixing the premixed powder, the calcined product, the vitrified micro bubbles, the mineral fibers and the heavy calcium carbonate.
10. A gypsum-based plastering mortar comprising the gypsum-based plastering mortar material of any one of claims 1 to 8 and water.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210774248.8A CN115340345B (en) | 2022-07-01 | 2022-07-01 | Gypsum-based plastering mortar with high coating rate |
| PCT/CN2022/126193 WO2024000934A1 (en) | 2022-07-01 | 2022-10-19 | Gypsum-based plastering mortar having high spreading rate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210774248.8A CN115340345B (en) | 2022-07-01 | 2022-07-01 | Gypsum-based plastering mortar with high coating rate |
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| Publication Number | Publication Date |
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| CN115340345A true CN115340345A (en) | 2022-11-15 |
| CN115340345B CN115340345B (en) | 2023-08-15 |
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| CN202210774248.8A Active CN115340345B (en) | 2022-07-01 | 2022-07-01 | Gypsum-based plastering mortar with high coating rate |
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| WO (1) | WO2024000934A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103319193A (en) * | 2013-05-24 | 2013-09-25 | 广西大学 | Method for preparing microporous sulphoaluminate type inorganic material by industrial waste residues |
| WO2015124044A1 (en) * | 2014-02-24 | 2015-08-27 | 唐山北极熊建材有限公司 | Rapid-setting and hardening, high-belite sulfoaluminate cement clinker as well as application and production process thereof |
| CN105776150A (en) * | 2014-12-23 | 2016-07-20 | 中国科学院过程工程研究所 | Method for cooperative activation of fly ash and decomposition of gypsum for recovery of sulfur resource |
| CN110395959A (en) * | 2019-07-26 | 2019-11-01 | 贵州中能高新材料有限公司 | A kind of gypsum base thermal insulation mortar and preparation method thereof |
| CN114276107A (en) * | 2021-12-24 | 2022-04-05 | 泰山石膏有限公司 | Quick-calcined light plastering gypsum and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9932271B2 (en) * | 2013-12-06 | 2018-04-03 | Georgia-Pacific Gypsum Llc | Gypsum composites containing cementitious materials and methods |
-
2022
- 2022-07-01 CN CN202210774248.8A patent/CN115340345B/en active Active
- 2022-10-19 WO PCT/CN2022/126193 patent/WO2024000934A1/en unknown
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103319193A (en) * | 2013-05-24 | 2013-09-25 | 广西大学 | Method for preparing microporous sulphoaluminate type inorganic material by industrial waste residues |
| WO2015124044A1 (en) * | 2014-02-24 | 2015-08-27 | 唐山北极熊建材有限公司 | Rapid-setting and hardening, high-belite sulfoaluminate cement clinker as well as application and production process thereof |
| CN105776150A (en) * | 2014-12-23 | 2016-07-20 | 中国科学院过程工程研究所 | Method for cooperative activation of fly ash and decomposition of gypsum for recovery of sulfur resource |
| CN110395959A (en) * | 2019-07-26 | 2019-11-01 | 贵州中能高新材料有限公司 | A kind of gypsum base thermal insulation mortar and preparation method thereof |
| CN114276107A (en) * | 2021-12-24 | 2022-04-05 | 泰山石膏有限公司 | Quick-calcined light plastering gypsum and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| WO2024000934A1 (en) | 2024-01-04 |
| CN115340345B (en) | 2023-08-15 |
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