CN115259824A - Lightweight plastering gypsum and preparation method thereof - Google Patents
Lightweight plastering gypsum and preparation method thereof Download PDFInfo
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- CN115259824A CN115259824A CN202210860215.5A CN202210860215A CN115259824A CN 115259824 A CN115259824 A CN 115259824A CN 202210860215 A CN202210860215 A CN 202210860215A CN 115259824 A CN115259824 A CN 115259824A
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- 239000010440 gypsum Substances 0.000 title claims abstract description 133
- 229910052602 gypsum Inorganic materials 0.000 title claims abstract description 133
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000000843 powder Substances 0.000 claims abstract description 56
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 38
- 239000002562 thickening agent Substances 0.000 claims abstract description 21
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 238000003756 stirring Methods 0.000 claims description 24
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 12
- 239000002002 slurry Substances 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 239000002893 slag Substances 0.000 claims description 11
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 claims description 8
- 239000004568 cement Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 239000011521 glass Substances 0.000 claims description 7
- 229920002472 Starch Polymers 0.000 claims description 6
- 239000000440 bentonite Substances 0.000 claims description 6
- 229910000278 bentonite Inorganic materials 0.000 claims description 6
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 102000004169 proteins and genes Human genes 0.000 claims description 6
- 108090000623 proteins and genes Proteins 0.000 claims description 6
- 150000003839 salts Chemical class 0.000 claims description 6
- 239000008107 starch Substances 0.000 claims description 6
- 235000019698 starch Nutrition 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 6
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 5
- 229910019142 PO4 Inorganic materials 0.000 claims description 5
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 claims description 5
- 229940103272 aluminum potassium sulfate Drugs 0.000 claims description 5
- 239000001110 calcium chloride Substances 0.000 claims description 5
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 5
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 5
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 claims description 5
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 claims description 5
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 claims description 5
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 claims description 5
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 claims description 5
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 5
- 239000010452 phosphate Substances 0.000 claims description 5
- GRLPQNLYRHEGIJ-UHFFFAOYSA-J potassium aluminium sulfate Chemical compound [Al+3].[K+].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O GRLPQNLYRHEGIJ-UHFFFAOYSA-J 0.000 claims description 5
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 claims description 5
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 4
- 235000019738 Limestone Nutrition 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 150000004996 alkyl benzenes Chemical class 0.000 claims description 4
- 229940077388 benzenesulfonate Drugs 0.000 claims description 4
- 239000004571 lime Substances 0.000 claims description 4
- 239000006028 limestone Substances 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 239000010936 titanium Substances 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 229920000881 Modified starch Polymers 0.000 claims description 3
- 239000011398 Portland cement Substances 0.000 claims description 3
- 150000004645 aluminates Chemical class 0.000 claims description 3
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 claims description 3
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 3
- 239000000194 fatty acid Substances 0.000 claims description 3
- 229930195729 fatty acid Natural products 0.000 claims description 3
- 150000004665 fatty acids Chemical class 0.000 claims description 3
- 239000010881 fly ash Substances 0.000 claims description 3
- 239000001397 quillaja saponaria molina bark Substances 0.000 claims description 3
- 229930182490 saponin Natural products 0.000 claims description 3
- 150000007949 saponins Chemical class 0.000 claims description 3
- 229910021487 silica fume Inorganic materials 0.000 claims description 3
- 235000011148 calcium chloride Nutrition 0.000 claims description 2
- 229920000609 methyl cellulose Polymers 0.000 claims description 2
- 239000001923 methylcellulose Substances 0.000 claims description 2
- 235000010981 methylcellulose Nutrition 0.000 claims description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 2
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 claims description 2
- 229910052939 potassium sulfate Inorganic materials 0.000 claims description 2
- 235000011151 potassium sulphates Nutrition 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims 1
- 230000007547 defect Effects 0.000 abstract description 5
- 239000002910 solid waste Substances 0.000 abstract description 4
- 239000004566 building material Substances 0.000 abstract description 2
- 235000012216 bentonite Nutrition 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 3
- 125000002467 phosphate group Chemical group [H]OP(=O)(O[H])O[*] 0.000 description 3
- 239000011083 cement mortar Substances 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 239000004005 microsphere Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- -1 alkylbenzene sulfonate Chemical class 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
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
- C04B28/16—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 anhydrite, e.g. Keene's cement
-
- 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
-
- 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
- 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
-
- 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
- C04B2201/50—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 invention discloses light plastering gypsum and a preparation method thereof, belonging to the technical field of building materials and preparation methods thereof, wherein the light plastering gypsum is prepared by mixing 300-700 parts by weight of gypsum powder, 50-100 parts by weight of exciting agent, 200-500 parts by weight of admixture, 0.5-3 parts by weight of thickening agent, 40-80 parts by weight of vitrified micro bubbles, 0.01-0.5 part by weight of air entraining agent and 0.01-5 parts by weight of retarder. The lightweight plastering gypsum of the invention utilizes the dual-excitation admixture of gypsum and excitant to effectively utilize the accumulated solid waste admixture, and overcomes the quality defects caused by overburning and underburning of gypsum in the traditional lightweight plastering gypsum and the self limitations of the lightweight plastering gypsum that the lightweight plastering gypsum is not waterproof and the later strength is not increased.
Description
Technical Field
The invention relates to the technical field of building materials and preparation methods thereof, in particular to light plastering gypsum and a preparation method thereof.
Background
Due to the self limitation of cement mortar plastering, the bonding strength of a plastering layer and a wall body is low, and further, various quality problems such as cracking, shelling and even peeling occur, and the apparent quality and the use function of a building are seriously influenced. With the rapid development of gypsum products, the plastering gypsum products effectively solve the common quality problems of hollowing, cracking, falling and the like in plastering engineering by the characteristics of excellent construction performance, good caking property and the like, and become an ideal substitute product for cement mortar and mixed mortar. Therefore, the lightweight plastering gypsum is increasingly recognized, popularized and used in China and is vigorous in development.
With the rapid development of global industrialization, solid waste is accumulated. The solid wastes are often made into low-activity admixtures through grinding, and the admixtures are often low in activity and difficult to digest and absorb in a large area in the building industry. The cementing material of the light plastering gypsum is mainly gypsum, and how to utilize the low-activity admixtures solves the quality defects caused by over-burning and under-burning of the existing gypsum and the self limitations that the light plastering gypsum is not waterproof and the later strength is not increased, thus the problems need to be solved urgently.
Disclosure of Invention
The embodiment of the invention provides light plastering gypsum and a preparation method thereof, which aim to solve the technical problem of using the light plastering gypsum in the prior art.
The embodiment of the invention adopts the following technical scheme: the light plastering gypsum is prepared by using the gypsum as the main material and using the exciting agent as the auxiliary material for double excitation, and the activity of the admixture is improved, and the defect that the light plastering gypsum is not water-resistant is also solved after the admixtures are hydrated. A light plastering gypsum is characterized in that: the lightweight plastering gypsum comprises the following components in parts by weight: 300-700 parts of gypsum powder, 5-100 parts of exciting agent, 200-500 parts of admixture, 0.5-3 parts of thickening agent, 40-80 parts of vitrified micro bubbles, 0.01-0.5 part of air entraining agent and 0.01-5 parts of retarder.
Furthermore, the gypsum powder in the light plastering gypsum formula system is one or more of natural anhydrite, desulfurized gypsum, phosphogypsum and titanium gypsum.
Further, the excitant in the light plastering gypsum formula system is one or more of Portland cement clinker, sulphoaluminate cement clinker, aluminate cement clinker, lime, potassium sulfate, calcium chloride and aluminum potassium sulfate.
Furthermore, the light plastering gypsum formula system of the invention is doped withThe mixture is one or more of water-quenched blast furnace slag powder, fly ash, silica fume, metakaolin, steel slag powder, limestone powder and slag powder, and the specific surface area is 300-1000m2/kg。
Further, the thickening agent in the light plastering gypsum formula system is one or more of hydroxypropyl methyl cellulose, bentonite, pregelatinized starch, methyl cellulose, starch ether and magnesium aluminum silicate.
Furthermore, the granularity of the vitrified microsphere glass in the light plastering gypsum formula system is 70-90 meshes, and the volume weight of the vitrified microsphere glass is 80-130kg/m3。
Furthermore, the air entraining agent in the light plastering gypsum formula system is one or more of rosin air entraining agent, alkylbenzene sulfonate air entraining agent, saponin air entraining agent, fatty acid, resin acid and salt thereof.
Furthermore, the retarder in the light plastering gypsum formula system is one or more of soluble salt retarder, phosphate retarder and protein retarder.
The preparation method of the light plastering gypsum is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps: uniformly mixing the gypsum powder, the excitant, the admixture, the thickening agent, the vitrified micro bubbles, the air entraining agent and the retarder to prepare the light plastering gypsum powder.
Step two: weighing 40-80 wt% of water in the lightweight plastering gypsum powder, and adding the water into a stirring container;
step three: slowly adding the light plastering gypsum powder into a stirring container, stirring while adding, stirring for 1-5 minutes to prepare light plastering gypsum slurry, uniformly coating the light plastering gypsum slurry on a wall, and curing to obtain the light plastering gypsum.
The embodiment of the invention adopts at least one technical scheme which can achieve the following beneficial effects:
the lightweight plastering gypsum is prepared by mixing 300-700 parts by weight of gypsum powder, 5-100 parts by weight of excitant, 200-500 parts by weight of admixture, 0.5-3 parts by weight of thickener, 40-80 parts by weight of vitrified micro bubbles, 0.01-0.5 part by weight of air entraining agent and 0.01-5 parts by weight of retarder. The lightweight plastering gypsum of the invention utilizes the dual-excitation admixture of gypsum and excitant to effectively utilize the accumulated solid waste admixture, and overcomes the quality defects caused by overburning and underburning of gypsum in the traditional lightweight plastering gypsum and the self limitations of the lightweight plastering gypsum that the lightweight plastering gypsum is not waterproof and the later strength is not increased.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention adopts the following technical scheme: the light plastering gypsum is prepared by using the gypsum as the main material and using the exciting agent as the auxiliary material for double excitation, and the activity of the admixture is improved, and the defect that the light plastering gypsum is not water-resistant is also solved after the admixtures are hydrated. A light plastering gypsum is characterized in that: the lightweight plastering gypsum comprises the following components in parts by weight: 300-700 parts of gypsum powder, 5-100 parts of excitant, 200-500 parts of admixture, 0.5-3 parts of thickener, 40-80 parts of vitrified micro bubbles, 0.01-0.5 part of air entraining agent and 0.01-5 parts of retarder.
Example 1
The light plastering gypsum comprises the following components in parts by weight: 350kg of gypsum powder, 85kg of excitant, 500kg of admixture, 2kg of thickener, 60kg of vitrified micro bubbles, 0.07kg of air entraining agent and 0.5kg of retarder.
The gypsum powder is a mixture of natural anhydrite and desulfurized gypsum.
The excitant is a mixture of sulphoaluminate cement clinker, aluminate cement clinker, calcium chloride and aluminum potassium sulfate.
The admixture is water-quenched blast furnace slag powder, steel slag powder and limestone powder, and the specific surface area of the admixture is 400m2/kg。
The thickening agent is hydroxypropyl methyl cellulose, bentonite and starch ether.
The glass granularity of the vitrified micro bubbles is 80 meshes, and the volume weight of the vitrified micro bubbles is 100kg/m3。
The air entraining agent is rosin air entraining agent or alkyl benzene sulfonate air entraining agent.
The retarder is phosphate retarder or protein retarder.
According to the formula, the preparation method of the light plastering gypsum comprises the following steps:
the method comprises the following steps: uniformly mixing the gypsum powder, the excitant, the admixture, the thickening agent, the vitrified micro bubbles, the air entraining agent and the retarder to prepare the light plastering gypsum powder.
Step two: weighing 55 wt% of water in the lightweight plastering gypsum powder, and adding the lightweight plastering gypsum powder into a stirring container;
step three: and slowly adding the light plastering gypsum powder into a stirring container, stirring while adding, stirring for 3 minutes to prepare light plastering gypsum slurry, uniformly coating the light plastering gypsum slurry on a wall, and curing to obtain the light plastering gypsum.
Example 2
The light plastering gypsum comprises the following components in parts by weight: 400kg of gypsum powder, 50kg of excitant, 475kg of admixture, 3kg of thickener, 70kg of vitrified micro bubbles, 0.1kg of air entraining agent and 0.8kg of retarder.
The gypsum powder is desulfurized gypsum and phosphogypsum.
The activator is sulphoaluminate cement clinker, calcium chloride and lime.
The admixture is water-quenched blast furnace slag powder, fly ash, metakaolin and steel slag powder, and the specific surface area is 900m2/kg。
The thickening agent is bentonite, starch ether and magnesium aluminum silicate.
The glass granularity of the vitrified micro bubbles is 70 meshes, and the volume weight of the vitrified micro bubbles is 90kg/m3。
The air entraining agent is saponin air entraining agent, fatty acid, resin acid or their salts.
The retarder is soluble salt retarder or protein retarder.
According to the formula, the preparation method of the light plastering gypsum comprises the following steps:
the method comprises the following steps: uniformly mixing the gypsum powder, the excitant, the admixture, the thickening agent, the vitrified micro bubbles, the air entraining agent and the retarder to prepare the light plastering gypsum powder.
Step two: weighing 60 wt% of water in the lightweight plastering gypsum powder, and adding the water into a stirring container;
step three: slowly adding the light plastering gypsum powder into a stirring container, stirring while adding, stirring for 2 minutes to prepare light plastering gypsum slurry, uniformly coating the light plastering gypsum slurry on a wall, and curing to obtain the light plastering gypsum.
Example 3
The light plastering gypsum comprises the following components in parts by weight: 500kg of gypsum powder, 20kg of excitant, 500kg of admixture, 3kg of thickener, 45kg of vitrified micro bubbles, 0.07kg of air entraining agent and 4kg of retarder.
The gypsum powder is natural anhydrite, phosphogypsum and titanium gypsum.
The excitant is portland cement clinker, lime, calcium chloride and aluminum potassium sulfate.
The admixture is water-quenched blast furnace slag powder, silica fume and metakaolin, and the specific surface area is 800m2/kg。
The thickener is hydroxypropyl methylcellulose, carboxymethyl cellulose, bentonite, and starch ether.
The glass granularity of the vitrified micro bubbles is 80 meshes, and the volume weight of the vitrified micro bubbles is 100kg/m3。
The air entraining agent is rosin air entraining agent or alkyl benzene sulfonate air entraining agent.
The retarder is phosphate retarder or protein retarder.
According to the formula, the preparation method of the light plastering gypsum comprises the following steps:
the method comprises the following steps: uniformly mixing the gypsum powder, the excitant, the admixture, the thickening agent, the vitrified micro bubbles, the air entraining agent and the retarder to prepare the light plastering gypsum powder.
Step two: weighing 55 wt% of water in the lightweight plastering gypsum powder, and adding the weighed water into a stirring container;
step three: and slowly adding the light plastering gypsum powder into a stirring container, stirring while adding, stirring for 2 minutes to prepare light plastering gypsum slurry, uniformly coating the light plastering gypsum slurry on a wall, and curing to obtain the light plastering gypsum.
Example 4
The light plastering gypsum comprises the following components in parts by weight: 680kg of gypsum powder, 40kg of excitant, 200kg of admixture, 0.5kg of thickener, 75kg of vitrified micro bubbles, 0.15kg of air entraining agent and 3kg of retarder.
The gypsum powder is natural anhydrite, phosphogypsum and titanium gypsum.
The excitant is sulphoaluminate cement clinker and aluminum potassium sulfate.
The admixture is metakaolin and limestone powder, and the specific surface area is 700m2/kg。
The thickening agent is hydroxypropyl methyl cellulose, pregelatinized starch, bentonite and starch ether.
The glass granularity of the vitrified micro bubbles is 100 meshes, and the volume weight of the vitrified micro bubbles is 125kg/m3。
The air entraining agent is rosin air entraining agent or alkyl benzene sulfonate air entraining agent.
The retarder is phosphate retarder or protein retarder.
According to the formula, the preparation method of the light plastering gypsum comprises the following steps:
the method comprises the following steps: uniformly mixing the gypsum powder, the excitant, the admixture, the thickening agent, the vitrified micro bubbles, the air entraining agent and the retarder to prepare the light plastering gypsum powder.
Step two: weighing 70% water by weight of the lightweight plastering gypsum powder, and adding the lightweight plastering gypsum powder into a stirring container;
step three: slowly adding the light plastering gypsum powder into a stirring container, stirring while adding, stirring for 5 minutes to prepare light plastering gypsum slurry, uniformly coating the light plastering gypsum slurry on a wall, and curing to obtain the light plastering gypsum.
The performance of the light plastering gypsum prepared in the embodiments 1 to 4 of the invention is carried out according to the standard specified in the standard plastering gypsum GB/T28627-2012, and the obtained test results are as follows:
the light plastering gypsum prepared by the invention meets the requirements of national standards.
The above description is only an example of the present invention and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (9)
1. A light plastering gypsum is characterized in that: the lightweight plastering gypsum comprises the following components in parts by weight: 300-700 parts of gypsum powder, 5-100 parts of excitant, 200-500 parts of admixture, 0.5-3 parts of thickener, 40-80 parts of vitrified micro bubbles, 0.01-0.5 part of air entraining agent and 0.01-5 parts of retarder.
2. The lightweight plastering gypsum of claim 1, wherein: the gypsum powder is one or more of natural anhydrite, desulfurized gypsum, phosphogypsum and titanium gypsum.
3. The lightweight plastering gypsum of claim 1, wherein: the excitant is one or more of portland cement clinker, sulphoaluminate cement clinker, aluminate cement clinker, lime, potassium sulfate, calcium chloride and aluminum potassium sulfate.
4. The lightweight plastering gypsum of claim 1, wherein: the admixture is one or more of water-quenched blast furnace slag powder, fly ash, silica fume, metakaolin, steel slag powder, limestone powder and slag powder, and the specific surface area is 300-1000m2/kg。
5. The lightweight plastering gypsum of claim 1, wherein: the thickening agent is one or more of hydroxypropyl methyl cellulose, bentonite, pregelatinized starch, methyl cellulose, starch ether and magnesium aluminum silicate.
6. The lightweight plastering gypsum of claim 1, wherein: the glass particle size of the vitrified micro bubbles is 70-90 meshes, and the volume weight of the vitrified micro bubbles is 80-130kg/m3。
7. The lightweight plastering gypsum of claim 1, wherein: the air entraining agent is one or more of rosin air entraining agent, alkyl benzene sulfonate air entraining agent, saponin air entraining agent, fatty acid, resin acid and salt thereof.
8. The lightweight plastering gypsum of claim 1, wherein: the retarder is one or more of soluble salt retarder, phosphate retarder and protein retarder.
9. A preparation method of light plastering gypsum is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps: uniformly mixing the gypsum powder, the excitant, the admixture, the thickening agent, the vitrified micro bubbles, the air entraining agent and the retarder to prepare the light plastering gypsum powder.
Step two: weighing 40-80 wt% of water in the lightweight plastering gypsum powder, and adding the water into a stirring container;
step three: slowly adding the light plastering gypsum powder into a stirring container, stirring while adding, stirring for 1-5 minutes to prepare light plastering gypsum slurry, uniformly coating the light plastering gypsum slurry on a wall, and curing to obtain the light plastering gypsum.
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| CN116462476A (en) * | 2023-04-06 | 2023-07-21 | 石河子大学 | Calcination-free dihydrate gypsum-based waterproof and anti-cracking plastering mortar |
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