CN113480283A - Preparation method of three-dimensional super-hydrophobic gypsum with ultrahigh water-cement ratio - Google Patents
Preparation method of three-dimensional super-hydrophobic gypsum with ultrahigh water-cement ratio Download PDFInfo
- Publication number
- CN113480283A CN113480283A CN202110974914.8A CN202110974914A CN113480283A CN 113480283 A CN113480283 A CN 113480283A CN 202110974914 A CN202110974914 A CN 202110974914A CN 113480283 A CN113480283 A CN 113480283A
- Authority
- CN
- China
- Prior art keywords
- gypsum
- percent
- water
- cement ratio
- hydrophobic
- 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
- 229910052602 gypsum Inorganic materials 0.000 title claims abstract description 68
- 239000010440 gypsum Substances 0.000 title claims abstract description 68
- 239000004568 cement Substances 0.000 title claims abstract description 22
- 230000003075 superhydrophobic effect Effects 0.000 title claims abstract description 14
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 30
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 17
- 239000001257 hydrogen Substances 0.000 claims abstract description 17
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 15
- 229920002545 silicone oil Polymers 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 14
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 13
- 239000011575 calcium Substances 0.000 claims abstract description 13
- 229920000881 Modified starch Polymers 0.000 claims abstract description 10
- 239000011398 Portland cement Substances 0.000 claims abstract description 8
- HHSPVTKDOHQBKF-UHFFFAOYSA-J calcium;magnesium;dicarbonate Chemical compound [Mg+2].[Ca+2].[O-]C([O-])=O.[O-]C([O-])=O HHSPVTKDOHQBKF-UHFFFAOYSA-J 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 7
- 239000011812 mixed powder Substances 0.000 claims description 6
- 239000011259 mixed solution Substances 0.000 claims description 6
- 239000002002 slurry Substances 0.000 claims description 6
- 150000002148 esters Chemical class 0.000 claims description 4
- 230000002209 hydrophobic effect Effects 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 3
- 238000001746 injection moulding Methods 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 abstract description 19
- 239000004566 building material Substances 0.000 abstract description 4
- 239000002910 solid waste Substances 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000005192 partition Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000011449 brick Substances 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract description 2
- 239000006227 byproduct Substances 0.000 description 36
- 239000013078 crystal Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000011148 porous material Substances 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 230000002378 acidificating effect Effects 0.000 description 2
- 238000006477 desulfuration reaction Methods 0.000 description 2
- 230000023556 desulfurization Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
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
- C04B28/14—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
- C04B28/143—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 phosphogypsum
-
- 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
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent 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
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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 invention provides a preparation method of three-dimensional super-hydrophobic gypsum with an ultrahigh water-cement ratio, which comprises the following components in percentage by mass: 100 percent of gypsum, 60 to 140 percent of water, 0.1 to 1 percent of hydrogen-containing silicone oil, 0.5 to 5 percent of Portland cement, 0.5 to 5 percent of calcium sulphoaluminate, 0.1 to 1 percent of pregelatinized starch, 0.1 to 5 percent of nano calcium carbonate and 0.1 to 5 percent of nano calcium magnesium carbonate. The invention solves the problem of poor water resistance of the gypsum under the condition of ultrahigh water-cement ratio, so that the gypsum forms a multi-level waterproof system on a microscopic level, and the water resistance of the gypsum is effectively improved; the method embodies the recycling of the solid waste phosphogypsum, is a green environment-friendly building material, is beneficial to environmental protection, has easily obtained raw materials and simple manufacturing process; the phosphogypsum building block brick treated by the process can be applied to the inner partition walls of toilets and kitchens.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to a preparation method of three-dimensional super-hydrophobic gypsum with an ultrahigh water-cement ratio.
Background
The industrial by-product gypsum is a solid waste. At present, the utilization rate of industrial byproduct gypsum is low, mainly stacking is used, and the pollution to the surrounding environment is large. The industrial by-product gypsum is recycled, so that the solid waste can be recycled, and the environment can be beautified. At present, the utilization of industrial byproduct gypsum in China mainly focuses on the aspects of soil improvement, cement retarder, fired sulfate cement, calcination-free industrial byproduct gypsum, industrial byproduct gypsum building blocks, industrial byproduct gypsum binder and the like. In the aspect of industrial byproduct gypsum building blocks, the industrial byproduct gypsum building blocks are mainly applied to inner partition walls.
The industrial by-product gypsum is mostly acidic and has poor water resistance, and the application of the industrial by-product gypsum in the building material field is severely restricted. The water resistance of the industrial byproduct gypsum material is influenced by the pores formed after water evaporation, the morphology of the industrial byproduct gypsum crystal and the contact point state of the industrial byproduct gypsum crystal. The water resistance of the industrial by-product gypsum can be improved and the application range of the industrial by-product gypsum is expanded by optimizing the industrial by-product gypsum to be alkaline, reducing the internal pores of the industrial by-product gypsum and changing the crystal state of the industrial by-product gypsum. At present, the technical means for improving the water resistance of natural industrial by-product gypsum and industrial by-product gypsum mainly comprise: firstly, organic matters are doped in the gypsum, and after the industrial byproduct gypsum is poured and hardened, the organic matters block pores of the industrial byproduct gypsum or form a film so as to improve the water resistance of the industrial byproduct gypsum; secondly, inorganic powder such as fly ash, slag and the like is adopted, and a hydraulic hydration product is formed in the gap of the industrial by-product gypsum through a hydraulic material, so that the water resistance of the industrial by-product gypsum is improved; thirdly, the salt is used for changing the crystal structure of the industrial byproduct gypsum-based material and changing the contact point state of the industrial byproduct gypsum crystal so as to improve the water resistance of the industrial byproduct gypsum-based material. The prior technical scheme obtains ideal effect when treating the water resistance of the natural industrial by-product gypsum and the desulfurization industrial by-product gypsum. However, when the prior art solution is applied to improve the water resistance of the industrial by-product gypsum, the method has the following limitations: because the industrial by-product gypsum is acidic, the chemical composition, crystal form, particle size distribution, impurity composition, form and distribution are greatly different from those of natural industrial by-product gypsum and desulfurization industrial by-product gypsum, so that the water-resistant effect of the industrial by-product gypsum treated by the prior art is not ideal. In particular, under high water-cement ratio conditions, excellent water-repellent properties cannot be achieved.
The invention provides a preparation process of three-dimensional super-hydrophobic gypsum with an ultrahigh water-cement ratio. The invention provides a method for optimizing the waterproof performance of a gypsum material under an ultrahigh water-cement ratio by improving and optimizing closed holes in the gypsum.
In view of the problems existing in the prior art, how to realize the optimization of the waterproof performance of the gypsum material under the ultrahigh water-cement ratio by improving and optimizing the closed pores inside the gypsum, and the preparation of the three-dimensional super-hydrophobic gypsum with the ultrahigh water-cement ratio is a problem to be solved urgently in the prior art.
Disclosure of Invention
The invention aims to provide a water-resistant phosphogypsum building block and a preparation process thereof, which aim to solve the problem of poor water resistance of gypsum under ultrahigh water-cement ratio and enable the gypsum to form a multi-level waterproof system on a microscopic level;
in order to achieve the purpose, the invention adopts the following technical scheme:
the preparation method of the three-dimensional super-hydrophobic gypsum with the ultrahigh water-cement ratio is characterized by comprising the following steps of:
the preparation method of the three-dimensional super-hydrophobic gypsum with the ultrahigh water-cement ratio comprises the following steps:
step 1: mixing the gypsum, the portland cement, the calcium sulphoaluminate, the pregelatinized starch, the nano calcium carbonate and the nano calcium magnesium carbonate in the proportion to prepare mixed powder;
step 2: mixing water and hydrogen-containing silicone oil, stirring and dispersing to prepare a mixed solution;
and step 3: mixing the mixed solution and the mixed powder to prepare slurry; and then, injection molding and drying the slurry to obtain a finished product.
The hydrogen-containing silicone oil has the parameters of 0.1-1% and the hydrogen content of 0.6-2.0%.
The calcium sulphoaluminate parameter is 0.5-5%, and the expansion rate is 0.3% -0.5%.
0.1 to 5 percent of nano calcium carbonate with the grain diameter of 0.5 to 100 mu m, and the surface of the particle is coated with an ester hydrophobic film.
0.1-5% of nano calcium magnesium carbonate, 0.5-100 μm of particle size, and coating ester hydrophobic film on the surface of the particles.
The invention provides a water-resistant phosphogypsum building block and a preparation process thereof, which solve the problem of poor water resistance of gypsum under ultrahigh water-cement ratio, enable the gypsum to form a multi-level waterproof system on a microscopic level and effectively increase the water resistance of the gypsum. According to the invention, a multi-level waterproof system is formed on a microscopic level, and the water resistance of the phosphogypsum is effectively improved. The invention embodies the recycling of the solid waste phosphogypsum, is a green environment-friendly building material, is beneficial to environmental protection, and has the advantages of easily obtained raw materials and simple manufacturing process. The invention can be applied to the application range of industrial gypsum, and the phosphogypsum building block brick treated by the process can be applied to partition walls in toilets and kitchens.
Drawings
FIG. 1 is a flow chart of the preparation method of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work based on the embodiments of the present invention belong to the scope of the present invention.
Example 1
The sample formula is as follows: 1000g of phosphogypsum, 10g of nano calcium carbonate, 3g of hydrogen-containing silicone oil, 30g of calcium sulphoaluminate and 1000g of water; sample No. P1.
Example 2
The sample formula is as follows: 1000g of phosphogypsum, 10g of nano calcium carbonate, 3g of hydrogen-containing silicone oil, 30g of calcium sulphoaluminate and 1100g of water; sample No. P2.
Example 3
The sample formula is as follows: 1000g of phosphogypsum, 10g of nano calcium carbonate, 3g of hydrogen-containing silicone oil, 30g of calcium sulphoaluminate and 1200g of water; sample No. P3.
Example 4
The sample formula is as follows: 1000g of phosphogypsum, 10g of nano calcium carbonate, 3g of hydrogen-containing silicone oil, 30g of calcium sulphoaluminate, 1300g of water and 3g of pregelatinized starch; sample No. P4.
Example 5
The sample formula is as follows: 1000g of phosphogypsum, 10g of nano calcium carbonate, 3g of hydrogen-containing silicone oil, 30g of calcium sulphoaluminate, 1400g of water and 5g of pregelatinized starch; sample No. P5.
Example 6
The sample formula is as follows: 1000g of phosphogypsum, 10g of nano calcium carbonate, 3g of hydrogen-containing silicone oil, 30g of Portland cement, 1300g of water and 5g of pregelatinized starch; sample No. P6.
Example 7
The sample formula is as follows: 1000g of phosphogypsum, 6g of nano calcium carbonate, 4g of hydrogen-containing silicone oil, 20g of Portland cement, 1300g of water and 3g of pregelatinized starch; sample No. P7.
Example 8
The sample formula is as follows: 1000g of phosphogypsum, 10g of nano calcium carbonate, 3g of hydrogen-containing silicone oil, 20g of Portland cement, 10g of calcium sulphoaluminate, 1300g of water and 3g of pregelatinized starch; sample No. P8.
Example 9
The sample formula is as follows: 1000g of phosphogypsum, 5g of nano calcium carbonate, 5g of nano calcium magnesium carbonate, 3g of hydrogen-containing silicone oil, 20g of portland cement, 10g of calcium sulphoaluminate, 1300g of water and 3g of pregelatinized starch; sample No. P9.
The above example formulation was prepared as follows:
step 1: mixing the gypsum, the portland cement, the calcium sulphoaluminate, the pregelatinized starch, the nano calcium carbonate and the nano calcium magnesium carbonate in the proportions respectively to prepare mixed powder respectively;
step 2: mixing water and hydrogen-containing silicone oil, stirring and dispersing to prepare a mixed solution;
and step 3: mixing the mixed solution and the mixed powder to prepare slurry; and then, injection molding and drying the slurry to obtain a finished product.
The finished product was prepared and the experimental results were as follows:
TABLE 1 Water-resistant phosphogypsum performance index under different formula processes
Therefore, the technical scheme provided by the invention can effectively improve the water resistance of the phosphogypsum building block. The mixing amount and the acidity and alkalinity of each component have important influence on the performance of the phosphogypsum and the production difficulty and easiness.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the preferred embodiments of the invention and described in the specification are only preferred embodiments of the invention and are not intended to limit the invention, and that various changes and modifications may be made without departing from the novel spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. The preparation method of the three-dimensional super-hydrophobic gypsum with the ultrahigh water-cement ratio is characterized by comprising the following steps of:
the preparation method of the three-dimensional super-hydrophobic gypsum with the ultrahigh water-cement ratio comprises the following steps:
step 1: mixing the gypsum, the portland cement, the calcium sulphoaluminate, the pregelatinized starch, the nano calcium carbonate and the nano calcium magnesium carbonate in the proportion to prepare mixed powder;
step 2: mixing water and hydrogen-containing silicone oil, stirring and dispersing to prepare a mixed solution;
and step 3: mixing the mixed solution and the mixed powder to prepare slurry; and then, injection molding and drying the slurry to obtain a finished product.
2. The method for preparing the ultra-high water-cement ratio three-dimensional super-hydrophobic gypsum according to claim 1, wherein the method comprises the following steps: the hydrogen-containing silicone oil has the parameters of 0.1-1% and the hydrogen content of 0.6-2.0%.
3. The method for preparing the ultra-high water-cement ratio three-dimensional super-hydrophobic gypsum according to claim 1, wherein the method comprises the following steps: the calcium sulphoaluminate parameter is 0.5-5%, and the expansion rate is 0.3% -0.5%.
4. The method for preparing the ultra-high water-cement ratio three-dimensional super-hydrophobic gypsum according to claim 1, wherein the method comprises the following steps: 0.1 to 5 percent of nano calcium carbonate with the grain diameter of 0.5 to 100 mu m, and the surface of the particle is coated with an ester hydrophobic film.
5. The method for preparing the ultra-high water-cement ratio three-dimensional super-hydrophobic gypsum according to claim 1, wherein the method comprises the following steps: 0.1-5% of nano calcium magnesium carbonate, 0.5-100 μm of particle size, and coating ester hydrophobic film on the surface of the particles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110974914.8A CN113480283A (en) | 2021-08-24 | 2021-08-24 | Preparation method of three-dimensional super-hydrophobic gypsum with ultrahigh water-cement ratio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110974914.8A CN113480283A (en) | 2021-08-24 | 2021-08-24 | Preparation method of three-dimensional super-hydrophobic gypsum with ultrahigh water-cement ratio |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113480283A true CN113480283A (en) | 2021-10-08 |
Family
ID=77947078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110974914.8A Pending CN113480283A (en) | 2021-08-24 | 2021-08-24 | Preparation method of three-dimensional super-hydrophobic gypsum with ultrahigh water-cement ratio |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113480283A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116425438A (en) * | 2023-04-23 | 2023-07-14 | 泰山学院 | Preparation method and application of super-hydrophobic phosphogypsum powder in solid-phase environment |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS531224A (en) * | 1976-06-25 | 1978-01-09 | Nippon Kokan Kk | Process for water resistant treatment of gypsum or gypsum combined material |
| KR20170002769A (en) * | 2015-06-29 | 2017-01-09 | 주식회사 케이씨씨 | Waterproof agent for a gypsum board and a method for preparing waterproofing gypsum board using the same |
| CN107500698A (en) * | 2017-07-07 | 2017-12-22 | 南通绿洲节能环保产品有限公司 | A kind of water-fast Ardealite block and its preparation technology |
| CN108358580A (en) * | 2018-03-09 | 2018-08-03 | 深圳摩盾环保新材料有限公司 | A kind of resistance to water dispenser spray gypsum base material and preparation method thereof |
| CN110551366A (en) * | 2018-05-30 | 2019-12-10 | 中国石油化工股份有限公司 | Preparation method of super-hydrophobic polyester film |
| CN111018461A (en) * | 2018-10-09 | 2020-04-17 | 中建材创新科技研究院有限公司 | Water-resistant phosphorus gypsum board and preparation method thereof |
| CN112194446A (en) * | 2020-09-27 | 2021-01-08 | 荆门千年健医疗保健科技有限公司 | Gypsum casting forming method, gypsum formed product and application |
| CN112940697A (en) * | 2021-02-25 | 2021-06-11 | 成都泽赛普石油工程技术服务有限公司 | Acid-resistant temporary plugging agent and preparation method thereof |
-
2021
- 2021-08-24 CN CN202110974914.8A patent/CN113480283A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS531224A (en) * | 1976-06-25 | 1978-01-09 | Nippon Kokan Kk | Process for water resistant treatment of gypsum or gypsum combined material |
| KR20170002769A (en) * | 2015-06-29 | 2017-01-09 | 주식회사 케이씨씨 | Waterproof agent for a gypsum board and a method for preparing waterproofing gypsum board using the same |
| CN107500698A (en) * | 2017-07-07 | 2017-12-22 | 南通绿洲节能环保产品有限公司 | A kind of water-fast Ardealite block and its preparation technology |
| CN108358580A (en) * | 2018-03-09 | 2018-08-03 | 深圳摩盾环保新材料有限公司 | A kind of resistance to water dispenser spray gypsum base material and preparation method thereof |
| CN110551366A (en) * | 2018-05-30 | 2019-12-10 | 中国石油化工股份有限公司 | Preparation method of super-hydrophobic polyester film |
| CN111018461A (en) * | 2018-10-09 | 2020-04-17 | 中建材创新科技研究院有限公司 | Water-resistant phosphorus gypsum board and preparation method thereof |
| CN112194446A (en) * | 2020-09-27 | 2021-01-08 | 荆门千年健医疗保健科技有限公司 | Gypsum casting forming method, gypsum formed product and application |
| CN112940697A (en) * | 2021-02-25 | 2021-06-11 | 成都泽赛普石油工程技术服务有限公司 | Acid-resistant temporary plugging agent and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116425438A (en) * | 2023-04-23 | 2023-07-14 | 泰山学院 | Preparation method and application of super-hydrophobic phosphogypsum powder in solid-phase environment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104402364A (en) | Rapid setting type (I type) polymer cement waterproof slurry and preparation method thereof | |
| JP5139777B2 (en) | Sulfate-resistant centrifugal molded concrete composition | |
| CN107500698A (en) | A kind of water-fast Ardealite block and its preparation technology | |
| CN110423137A (en) | A kind of novel environment friendly ardealite high-strength light walling product and preparation method thereof | |
| CN103723988A (en) | Light and high strength aerated concrete prepared with glass powder and preparation method thereof | |
| CN103253916A (en) | Early strength agent for improving strength of phosphorus gypsum cement concrete and preparation method thereof | |
| CN101920520A (en) | Method for preparing gypsum building block with titanium gypsum | |
| CN108863265A (en) | A kind of light cellular partition board gypsum based composite | |
| Ismail et al. | Effect of vinyl acetate effluent in reducing heat of hydration of concrete | |
| CN111454023A (en) | Concrete and preparation method thereof | |
| CN115215617A (en) | Green low-carbon ultrahigh-performance marine concrete and preparation method and application thereof | |
| CN113480283A (en) | Preparation method of three-dimensional super-hydrophobic gypsum with ultrahigh water-cement ratio | |
| CN111620589A (en) | Cement grouting material additive capable of adapting to various working conditions and improving performance of grouting material and preparation method and application thereof | |
| CN108706944B (en) | Phosphogypsum light board prepared from barium slag and preparation method thereof | |
| CN112830752A (en) | High-performance phosphogypsum fiber composite material and preparation method thereof | |
| CN114685077A (en) | Slow-release type coagulation promoting composite material, preparation method thereof and application thereof in cement-based materials | |
| CN102206056B (en) | Preparation method of concrete waterproofer with industrial by-product gysum non-calcining technology | |
| CN110713354A (en) | Phosphorus slag silicon-aluminum-based cementing material and preparation method thereof | |
| CN114349458B (en) | Environment-friendly plastering mortar and preparation method thereof | |
| CN116102314A (en) | Concrete with red mud and limestone powder as auxiliary cementing materials and preparation method thereof | |
| CN113004055B (en) | Green high-thermal-resistance self-insulation building block and preparation method thereof | |
| CN114988798A (en) | Masonry mortar prepared from recycled brick aggregate and preparation method thereof | |
| CN113372081A (en) | High-strength phosphogypsum-based self-leveling mortar, preparation method and application | |
| CN112979261A (en) | Phosphogypsum fireproof gypsum board and preparation method thereof | |
| KR20160072834A (en) | Secondary Products of Soil Concrete |
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: 20211008 |
|
| RJ01 | Rejection of invention patent application after publication |