CN115028426A - Gypsum-based self-leveling mortar proportioning method - Google Patents
Gypsum-based self-leveling mortar proportioning method Download PDFInfo
- Publication number
- CN115028426A CN115028426A CN202210654343.4A CN202210654343A CN115028426A CN 115028426 A CN115028426 A CN 115028426A CN 202210654343 A CN202210654343 A CN 202210654343A CN 115028426 A CN115028426 A CN 115028426A
- Authority
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- China
- Prior art keywords
- gypsum
- parts
- based self
- mortar
- leveling
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- 239000010440 gypsum Substances 0.000 title claims abstract description 51
- 229910052602 gypsum Inorganic materials 0.000 title claims abstract description 51
- 239000004570 mortar (masonry) Substances 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000000835 fiber Substances 0.000 claims abstract description 33
- 239000000843 powder Substances 0.000 claims abstract description 27
- 229920000728 polyester Polymers 0.000 claims abstract description 21
- 239000011398 Portland cement Substances 0.000 claims abstract description 10
- 229910001570 bauxite Inorganic materials 0.000 claims abstract description 8
- 239000010451 perlite Substances 0.000 claims abstract description 7
- 235000019362 perlite Nutrition 0.000 claims abstract description 7
- 239000004576 sand Substances 0.000 claims abstract description 7
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 18
- 239000002994 raw material Substances 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000006477 desulfuration reaction Methods 0.000 claims description 7
- 230000023556 desulfurization Effects 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 239000002002 slurry Substances 0.000 claims description 7
- 239000002518 antifoaming agent Substances 0.000 claims description 6
- 239000012046 mixed solvent Substances 0.000 claims description 6
- -1 polyethylene terephthalate Polymers 0.000 claims description 6
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 6
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 6
- 239000002699 waste material Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 3
- 239000006227 byproduct Substances 0.000 claims description 3
- 239000010883 coal ash Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 239000003546 flue gas Substances 0.000 claims description 3
- 239000010881 fly ash Substances 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 239000011259 mixed solution Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 235000011837 pasties Nutrition 0.000 claims description 3
- 238000010008 shearing Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 9
- 206010016807 Fluid retention Diseases 0.000 abstract description 4
- 238000001354 calcination Methods 0.000 abstract description 3
- 238000005336 cracking Methods 0.000 abstract description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance 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
- C04B28/142—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
- C04B16/00—Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B16/04—Macromolecular compounds
- C04B16/06—Macromolecular compounds fibrous
- C04B16/0675—Macromolecular compounds fibrous from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B16/0683—Polyesters, e.g. polylactides
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/12—Flooring or floor layers made of masses in situ, e.g. seamless magnesite floors, terrazzo gypsum floors
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F21/00—Implements for finishing work on buildings
- E04F21/20—Implements for finishing work on buildings for laying flooring
- E04F21/24—Implements for finishing work on buildings for laying flooring of masses made in situ, e.g. smoothing tools
-
- 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
- C04B2111/60—Flooring materials
- C04B2111/62—Self-levelling compositions
-
- 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
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Ceramic Engineering (AREA)
- Civil Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to the technical field of mortar proportioning, in particular to a gypsum-based self-leveling mortar proportioning method, which solves the problem that the crack resistance and strength of gypsum-based self-leveling mortar in the prior art need to be improved. A gypsum-based self-leveling mortar proportioning method comprises the following components in parts by weight: 50-200 parts of Portland cement, 200-350 parts of desulfurized gypsum powder, 30-100 parts of perlite, 50-100 parts of sand and 150-250 parts of bauxite powder. According to the invention, the desulfurized gypsum powder is directly doped into the mortar, and can form a gelling system together with the bauxite powder and the portland cement, so that the step of calcining the desulfurized gypsum is saved, the energy is saved, and the polyester fiber added with the micropores has good tensile strength and elastic modulus, can enhance the compressive property and toughness of the mortar, can increase the water retention of the fiber, simultaneously improves the surface friction force, improves the combination effect with the mortar, and improves the anti-cracking effect on the mortar.
Description
Technical Field
The invention relates to the technical field of mortar proportioning, in particular to a gypsum-based self-leveling mortar proportioning method.
Background
The self-leveling gypsum is short for self-leveling ground leveling gypsum, is also called gypsum-based self-leveling mortar, and is dry powder mortar specially used for ground leveling, which is prepared by elaborately preparing and uniformly mixing gypsum materials, special aggregate and various building chemical additives in a factory, and a base layer has great influence on cement-based self-leveling, such as base layer flatness, surface strength, age and the like;
when the existing gypsum-based self-leveling mortar is used, a large amount of water and cement are required to be injected for dissolving, so that raw materials are greatly wasted, the strength is relatively low, and cracks can appear after long-time use;
therefore, a gypsum-based self-leveling mortar proportioning method is provided to solve the problems.
Disclosure of Invention
The invention aims to provide a gypsum-based self-leveling mortar proportioning method, which solves the problem that the crack resistance and strength of gypsum-based self-leveling mortar in the prior art need to be improved.
In order to achieve the purpose, the invention adopts the following technical scheme:
a gypsum-based self-leveling mortar proportioning method comprises the following components in parts by weight: 50-200 parts of portland cement, 200-350 parts of desulfurized gypsum powder, 30-100 parts of perlite, 50-100 parts of sand, 150-250 parts of bauxite powder, 10-25 parts of polyester fiber, 1-3 parts of fly ash, 0.5-1.0 part of defoaming agent and 0.5-1.2 parts of citric acid waste residue;
the method comprises the following steps:
the method comprises the following steps: dissolving basic gel material portland cement, sand, desulfurized gypsum powder and a defoaming agent into water to prepare a mixed raw material; then adding the perlite as an aggregate into the mixed raw materials and uniformly mixing;
step two: dissolving citric acid waste residues, bauxite powder, coal ash and polyester fibers into water to prepare a mixed solvent, and then adding the mixed solvent and the mixed raw materials into a stirring barrel for stirring;
step three: standing the mixture obtained in the step two, and then stirring;
step four: pouring a small amount of the stirred mixed solution into the ground to observe the flowing condition;
step five: and pouring the prepared gypsum-based self-leveling mortar into the ground for self-leveling.
Preferably, the diameter of the polyester fiber is 0.05-0.08mm, and the length of the polyester fiber is 5-10 mm.
Preferably, the polyester fiber is prepared by the following method: and (3) spraying the molten polyethylene terephthalate through a profiled spinneret plate, shearing the polyethylene terephthalate into short fibers, and treating the short fibers in the normal-pressure reactive plasma.
Preferably, in the third step, the self-leveling material is required to be kept stand for 2min to 3min to be fully wetted, and after bubbles are removed, the slurry is stirred for 2min to 3min to be uniform and pasty.
Preferably, the desulfurized gypsum powder is prepared by drying, crushing and grinding desulfurized gypsum slurry which is a flue gas desulfurization byproduct at 50-70 ℃, and the particle size of the desulfurized gypsum powder is smaller than 100 meshes.
Preferably, the ground construction temperature of the gypsum-based self-leveling mortar is 5-35 ℃, and the relative humidity is not higher than 80%.
The invention has the following beneficial effects:
the desulfurization gypsum powder is directly doped into the mortar, and a gelling system can be formed together with the bauxite powder and the portland cement, so that the step of calcination treatment of the desulfurization gypsum is saved, the energy is saved, the microporous polyester fiber is added, the polyester fiber has good tensile strength and elastic modulus, the compression resistance and toughness of the mortar can be enhanced, the micropores can increase the water retention of the fiber, the surface friction force is improved, the combination effect with the mortar is improved, and the anti-cracking effect on the mortar is improved.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
Example one
A gypsum-based self-leveling mortar proportioning method comprises the following components in parts by weight: 50-200 parts of portland cement, 200-350 parts of desulfurized gypsum powder, 30-100 parts of perlite, 50-100 parts of sand, 150-250 parts of alumyte powder, 10-25 parts of polyester fiber, 1-3 parts of fly ash, 0.5-1.0 part of defoaming agent and 0.5-1.2 parts of citric acid waste residue;
in this embodiment, directly mix the mortar through desulfurization gypsum powder, can form the gelatinization system jointly with aluminous clay powder and portland cement, save the step of the calcination processing to desulfurization gypsum, the energy saving, through adding the polyester fiber that has the micropore, polyester fiber has good tensile strength and elastic modulus, can strengthen the compressive property and the toughness of mortar, the micropore can increase fibrous water retention, improve the frictional force on surface simultaneously, improve the combination effect with the mortar, improve the anti-crack effect to the mortar.
Example two
A gypsum-based self-leveling mortar proportioning method comprises the following steps:
the method comprises the following steps: dissolving basic gel material portland cement, sand, desulfurized gypsum powder and a defoaming agent into water to prepare a mixed raw material; then adding the perlite as an aggregate into the mixed raw materials and uniformly mixing;
step two: dissolving citric acid waste residues, bauxite powder, coal ash and polyester fibers into water to prepare a mixed solvent, and then adding the mixed solvent and the mixed raw materials into a stirring barrel for stirring;
step three: standing the mixture obtained in the step two, and then stirring;
step four: pouring a small amount of the mixed solution after stirring into the ground to observe the flowing condition;
step five: pouring the prepared gypsum-based self-leveling mortar into the ground for self-leveling;
in this embodiment: the polyester fiber has good tensile strength and elastic modulus, can enhance the compressive property and toughness of the mortar, and the micropores can increase the water retention of the fiber, improve the surface friction force, improve the bonding effect with the mortar and improve the anti-cracking effect on the mortar;
in one embodiment, the diameter of the polyester fiber is 0.05-0.08mm, the length of the polyester fiber is 5-10mm, and the polyester fiber is prepared by the following method: the method comprises the following steps of spraying molten polyethylene terephthalate through a profiled spinneret plate, shearing the molten polyethylene terephthalate into short fibers, and placing the short fibers into normal-pressure reactive plasma for treatment, wherein the specific treatment mode can increase the oxygen content on the surface of the fibers, reduce the contact angle, increase the water absorption of the fibers and the combination crack resistance of the fibers and mortar, but the oxygen content cannot be excessive, otherwise, the density of the plasma can be reduced, and the etching effect is influenced.
In one embodiment, in the third step, the self-leveling material is required to be kept stand for 2min to 3min to be fully wetted, after bubbles are removed, the slurry is stirred for 2min to 3min to be uniform and pasty, and specifically, the bubbles are removed by adopting a self-leveling defoaming roller to deflate after the slurry is flattened.
In one embodiment, the desulfurized gypsum powder is prepared by drying, crushing and grinding desulfurized gypsum slurry which is a flue gas desulfurization byproduct at 50-70 ℃, the particle size of the desulfurized gypsum powder is less than 100 meshes, the ground construction temperature of the gypsum-based self-leveling mortar is 5-35 ℃, and the relative humidity is not higher than 80%.
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, which are merely illustrative of the principles of the invention, but various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The gypsum-based self-leveling mortar proportioning method is characterized by comprising the following components in parts by weight: 50-200 parts of portland cement, 200-350 parts of desulfurized gypsum powder, 30-100 parts of perlite, 50-100 parts of sand, 150-250 parts of bauxite powder, 10-25 parts of polyester fiber, 1-3 parts of fly ash, 0.5-1.0 part of defoaming agent and 0.5-1.2 parts of citric acid waste residue;
the method comprises the following steps:
the method comprises the following steps: dissolving basic gel material portland cement, sand, desulfurized gypsum powder and a defoaming agent into water to prepare a mixed raw material; then adding the perlite as an aggregate into the mixed raw material and uniformly mixing;
step two: dissolving citric acid waste residues, bauxite powder, coal ash and polyester fibers into water to prepare a mixed solvent, and then adding the mixed solvent and the mixed raw materials into a stirring barrel for stirring;
step three: standing the mixture obtained in the step two, and then stirring;
step four: pouring a small amount of the stirred mixed solution into the ground to observe the flowing condition;
step five: and pouring the prepared gypsum-based self-leveling mortar into the ground for self-leveling.
2. The proportioning method of gypsum-based self-leveling mortar of claim 1, wherein the diameter of the polyester fiber is 0.05-0.08mm, and the length of the polyester fiber is 5-10 mm.
3. The proportioning method of the gypsum-based self-leveling mortar according to claim 1, wherein the polyester fiber is prepared by the following method: and (3) spraying the molten polyethylene terephthalate through a profiled spinneret plate, shearing the polyethylene terephthalate into short fibers, and treating the short fibers in the normal-pressure reactive plasma.
4. A gypsum-based self-leveling mortar proportioning method according to claim 1, characterized in that in the third step, the self-leveling material is required to be kept stand for 2min to 3min to be fully wetted, and after bubbles are removed, the slurry is stirred for 2min to 3min to be uniform pasty.
5. The method for proportioning the gypsum-based self-leveling mortar according to claim 1, wherein the desulfurized gypsum powder is prepared by drying, crushing and grinding a desulfurized gypsum slurry which is a flue gas desulfurization byproduct at 50-70 ℃, and the particle size of the desulfurized gypsum powder is less than 100 meshes.
6. The method for proportioning the gypsum-based self-leveling mortar according to claim 1, wherein the ground construction temperature of the gypsum-based self-leveling mortar is 5-35 ℃, and the relative humidity is not higher than 80%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210654343.4A CN115028426A (en) | 2022-06-10 | 2022-06-10 | Gypsum-based self-leveling mortar proportioning method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210654343.4A CN115028426A (en) | 2022-06-10 | 2022-06-10 | Gypsum-based self-leveling mortar proportioning method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115028426A true CN115028426A (en) | 2022-09-09 |
Family
ID=83123565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210654343.4A Withdrawn CN115028426A (en) | 2022-06-10 | 2022-06-10 | Gypsum-based self-leveling mortar proportioning method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115028426A (en) |
-
2022
- 2022-06-10 CN CN202210654343.4A patent/CN115028426A/en not_active Withdrawn
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20220909 |
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| WW01 | Invention patent application withdrawn after publication |