CN114057463A - Anti-crack gypsum mortar capable of effectively filling cracks or cavities and preparation method thereof - Google Patents
Anti-crack gypsum mortar capable of effectively filling cracks or cavities and preparation method thereof Download PDFInfo
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- CN114057463A CN114057463A CN202111314490.9A CN202111314490A CN114057463A CN 114057463 A CN114057463 A CN 114057463A CN 202111314490 A CN202111314490 A CN 202111314490A CN 114057463 A CN114057463 A CN 114057463A
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- 239000011426 gypsum mortar Substances 0.000 title claims abstract description 107
- 238000011049 filling Methods 0.000 title claims abstract description 40
- 238000002360 preparation method Methods 0.000 title description 15
- 239000010440 gypsum Substances 0.000 claims abstract description 122
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 122
- 239000000843 powder Substances 0.000 claims abstract description 121
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 85
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 77
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 39
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 claims abstract description 34
- 239000002994 raw material Substances 0.000 claims abstract description 28
- 229920001971 elastomer Polymers 0.000 claims abstract description 22
- 239000000835 fiber Substances 0.000 claims abstract description 17
- 239000004033 plastic Substances 0.000 claims abstract description 9
- 238000003756 stirring Methods 0.000 claims description 30
- 239000004570 mortar (masonry) Substances 0.000 claims description 24
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid group Chemical group C(CC(O)(C(=O)O)CC(=O)O)(=O)O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 21
- 239000011800 void material Substances 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 17
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 14
- 239000000194 fatty acid Substances 0.000 claims description 14
- 229930195729 fatty acid Natural products 0.000 claims description 14
- 150000004665 fatty acids Chemical class 0.000 claims description 14
- 238000005187 foaming Methods 0.000 claims description 14
- 239000011229 interlayer Substances 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 14
- 238000005303 weighing Methods 0.000 claims description 14
- 238000002156 mixing Methods 0.000 claims description 12
- 239000002253 acid Substances 0.000 claims description 9
- 238000004078 waterproofing Methods 0.000 claims description 9
- 229920001732 Lignosulfonate Polymers 0.000 claims description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 7
- 239000002861 polymer material Substances 0.000 claims description 7
- 229910052710 silicon Inorganic materials 0.000 claims description 7
- 239000010703 silicon Substances 0.000 claims description 7
- 239000002002 slurry Substances 0.000 claims description 7
- 238000010276 construction Methods 0.000 abstract description 8
- 230000009471 action Effects 0.000 abstract description 3
- 238000005336 cracking Methods 0.000 abstract description 3
- 239000012535 impurity Substances 0.000 abstract description 3
- 230000007797 corrosion Effects 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 7
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 5
- 235000011941 Tilia x europaea Nutrition 0.000 description 5
- 239000004568 cement Substances 0.000 description 5
- 239000011083 cement mortar Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 239000004571 lime Substances 0.000 description 5
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 4
- 239000011575 calcium Substances 0.000 description 4
- 229910052791 calcium Inorganic materials 0.000 description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 description 4
- 239000011707 mineral Substances 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 239000002893 slag Substances 0.000 description 4
- 239000002518 antifoaming agent Substances 0.000 description 3
- 239000004927 clay Substances 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- -1 polypropylene Polymers 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- 230000003449 preventive effect Effects 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 239000011398 Portland cement Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 150000004683 dihydrates Chemical class 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000010881 fly ash Substances 0.000 description 2
- 239000011431 lime mortar Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000011325 microbead Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- ZNCPFRVNHGOPAG-UHFFFAOYSA-L sodium oxalate Chemical compound [Na+].[Na+].[O-]C(=O)C([O-])=O ZNCPFRVNHGOPAG-UHFFFAOYSA-L 0.000 description 2
- 229940039790 sodium oxalate Drugs 0.000 description 2
- 239000002910 solid waste Substances 0.000 description 2
- CTFFKFYWSOSIAA-UHFFFAOYSA-N 5-bromo-n-(4-bromophenyl)-2-hydroxybenzamide Chemical compound OC1=CC=C(Br)C=C1C(=O)NC1=CC=C(Br)C=C1 CTFFKFYWSOSIAA-UHFFFAOYSA-N 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- 239000004354 Hydroxyethyl cellulose Substances 0.000 description 1
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- YYRMJZQKEFZXMX-UHFFFAOYSA-N calcium;phosphoric acid Chemical compound [Ca+2].OP(O)(O)=O.OP(O)(O)=O YYRMJZQKEFZXMX-UHFFFAOYSA-N 0.000 description 1
- 229920000891 common polymer Polymers 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000006071 cream Substances 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001804 emulsifying effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000004005 microsphere Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010451 perlite Substances 0.000 description 1
- 235000019362 perlite Nutrition 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002426 superphosphate Substances 0.000 description 1
- BPCXHCSZMTWUBW-UHFFFAOYSA-N triethoxy(1,1,2,2,3,3,4,4,5,5,8,8,8-tridecafluorooctyl)silane Chemical compound CCO[Si](OCC)(OCC)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)CCC(F)(F)F BPCXHCSZMTWUBW-UHFFFAOYSA-N 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 229910000166 zirconium phosphate Inorganic materials 0.000 description 1
- LEHFSLREWWMLPU-UHFFFAOYSA-B zirconium(4+);tetraphosphate Chemical compound [Zr+4].[Zr+4].[Zr+4].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LEHFSLREWWMLPU-UHFFFAOYSA-B 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
- C04B28/165—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 containing synthetic anhydrite
-
- 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
- C04B2111/00663—Uses not provided for elsewhere in C04B2111/00 as filling material for cavities or the like
-
- 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
-
- 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
- C04B2111/21—Efflorescence resistance
-
- 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
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 an anti-crack gypsum mortar capable of effectively filling cracks or cavities, which is prepared from the following raw materials in parts by weight: 150-200 parts of gypsum powder, 55-85 parts of desulfurized gypsum, 35-55 parts of phosphogypsum-based gypsum powder, 0.1-0.5 part of retarder, 0.1-0.5 part of waterproof agent, 0.1-0.5 part of water reducing agent, 1-5 parts of anti-crack fiber and 0.5-1.0 part of rubber powder. The anti-crack gypsum mortar can effectively inhibit the plastic cracking of the gypsum mortar, does not fall off or crack under the action of self weight and environment in construction or for a long time, can effectively protect the wall and the ground from being eroded by wind, rain and harmful impurities, improves the moisture-proof, corrosion-resistant and weathering-resistant performances, and increases the durability.
Description
Technical Field
The invention belongs to the technical field of building materials, and particularly relates to anti-crack gypsum mortar capable of effectively filling cracks or cavities and a preparation method thereof.
Background
Compared with the traditional cement mortar, the gypsum mortar has the advantages of rapid construction, no hollowing and cracking, high strength, light dead weight, good fireproof and heat-insulating properties and the like, is widely applied to the field of building construction in recent years, and has the tendency of comprehensively replacing the traditional cement mortar. Mortar is a commonly used building material, generally used in masonry and plastering. The mortar is prepared by mixing a cementing material (cement, lime, clay and the like) and fine aggregate (sand) with water. According to the composition materials, the method can be divided into: gypsum mortar: the mortar is prepared from lime cream, sand and water according to a certain proportion, and is generally used for masonry and a plastering layer which have low strength requirement and are not affected by humidity; cement mortar: the mortar is prepared from cement, sand and water according to a certain proportion, and is generally used for brickworks, wall surfaces or ground surfaces and the like in a humid environment or water; mixing mortar: the mortar is prepared by adding proper admixture such as fly ash, diatomite and the like into cement or lime mortar to save the using amount of portland cement or lime and improve the workability of the mortar, and the common mixed mortar comprises cement lime mortar, cement clay mortar, lime clay mortar and the like. The method is divided into the following steps according to different purposes: masonry mortar, finishing mortar (including decorative mortar and waterproof mortar), bonding mortar and the like. At present, in the production process of commercially available gypsum mortar, a large amount of high-price heat-insulating materials such as vitrified micro-beads, expanded perlite, polystyrene microspheres and the like are generally required to be introduced, so that the price of the gypsum mortar is high; in addition, the conventional gypsum mortar is deteriorated with time, and is inferior in durability and water resistance.
The gypsum mortar is a high-efficiency and energy-saving leveling material for plastering indoor wall surfaces and top plates of buildings, and is a substitute product of traditional cement mortar. The gypsum mortar is used as a novel interior decoration material, has light weight, heat preservation, fire prevention and small drying shrinkage coefficient, has strong bonding force with a base material, does not bulge and crack, and is an interior wall leveling and plastering material with excellent performance. In the prior art, there are already a number of publications on gypsum mortars, for example:
1. patent application CN202110065585.5 discloses a gypsum mortar, which is prepared from the following raw materials in parts by weight: 120-160 parts of desulfurized gypsum, 20-32 parts of cement, 5-10 parts of fine sand, 18-37 parts of mineral admixture, 25-50 parts of vitrified micro-beads, 50-80 parts of fly ash, 10-15 parts of lignocellulose, 2-5 parts of water reducing agent, 1-3 parts of water retaining agent, 1-3 parts of mildew preventive, 5-12 parts of dispersible latex powder, 3-5 parts of retarder and 1-2 parts of defoaming agent, the gypsum mortar further comprises the balance of water, and the mineral admixture comprises 20-30 parts of blast furnace slag, 5-10 parts of bentonite, 20-30 parts of silica powder, 15-20 parts of triple superphosphate, 5-10 parts of talcum powder and water. The method ensures the mildew resistance of the gypsum mortar, ensures the lightweight gypsum mortar to be compact, can ensure the sound insulation performance, can ensure the structural stability under long-term use, and is favorable for meeting the industrial production requirement.
2. Patent application CN202010116017.9 discloses a phosphogypsum mortar for a load-bearing structure and a preparation method thereof, wherein the phosphogypsum mortar for the load-bearing structure comprises the following components of phosphogypsum, mineral powder, lime calcium, a gypsum retarder, a defoaming agent, a polycarboxylic acid water reducing agent, calcium sulphoaluminate, sodium oxalate, dihydrate gypsum and polypropylene short fibers, and the preparation method comprises the following steps: mixing calcium sulphoaluminate, sodium oxalate and dihydrate gypsum, and carrying out mixing grinding to obtain a mixture; uniformly mixing the phosphogypsum, mineral powder, ash calcium, a gypsum retarder, a defoaming agent, a polycarboxylic acid water reducing agent, polypropylene short fibers and the mixture, adding water and uniformly stirring to obtain the phosphogypsum mortar for the load-bearing structure. By the mode, the method has the advantages of convenient raw material source, coordination of all components, good physical properties after compounding, simple manufacturing method, no need of excessive operating skills and wide application range.
3. Patent application CN202010297538.9 discloses a slag-based mildew-proof heat-preservation gypsum mortar and a preparation method thereof, wherein the slag-based mildew-proof heat-preservation gypsum mortar is prepared from the following raw materials in percentage by mass by taking solid waste beta gypsum powder and lightweight aggregate of a coal-fired power plant as main raw materials: 18-25% of beta gypsum powder, 30-35% of lightweight aggregate with the particle size of 1.0-2.2 mm, 35-49% of lightweight aggregate with the particle size of 0.2-0.5 mm, 1-1.5% of hydroxyethyl cellulose, 0.5-1% of portland cement, 0.5-1% of mildew preventive and 1-1.5% of foaming agent; the mildew preventive is prepared from zirconium phosphate loaded with silver ions/bromosalicylanilide and tridecafluorooctyltriethoxysilane 1: (2-4) by mass ratio. The method takes the solid waste of the coal-fired power plant as the main raw material, which accounts for more than 95 percent of the total mass of the gypsum mortar, realizes the resource utilization of the waste, has cheap and easily obtained raw materials, obviously reduces the production cost of the gypsum mortar, and simultaneously has lighter weight compared with the traditional gypsum mortar, and obviously improves the performances of water resistance, moisture resistance, mildew resistance, bacteria resistance, heat insulation, sound insulation, noise reduction and shock absorption.
The basic wall material is basically not required to be treated in the gypsum mortar construction process, so the water absorption performance of the basic wall material directly influences the water retention performance of the gypsum mortar. External construction environmental factors such as temperature, wind speed and humidity cause the gypsum mortar to lose water too quickly before setting and hardening, so that the product is plastically cracked, and therefore the conventional gypsum mortar cannot be used for filling cracks or cavities.
Disclosure of Invention
The invention provides anti-crack gypsum mortar for effectively filling cracks or cavities and a preparation method thereof to solve the technical problems.
In order to achieve the above purpose, the invention adopts the following technical scheme:
an anti-crack gypsum mortar capable of effectively filling cracks or cavities is prepared from the following raw materials in parts by weight: 150-200 parts of gypsum powder, 55-85 parts of desulfurized gypsum, 35-55 parts of phosphogypsum-based gypsum powder, 0.1-0.5 part of retarder, 0.1-0.5 part of waterproof agent, 0.1-0.5 part of water reducing agent, 1-5 parts of anti-crack fiber and 0.5-1.0 part of rubber powder.
Further, the gypsum powder is phosphogypsum-based gypsum powder, is gypsum powder calcined at a high temperature of 300-450 ℃, and contains about 30% of anhydrous type beta gypsum.
Further, the desulfurized gypsum is gypsum calcined at 155-175 ℃ for 1.8-2.3 h.
Further, the phosphogypsum-based gypsum powder is gypsum powder calcined at a high temperature of 300-450 ℃, and contains about 30% of anhydrous type beta gypsum.
Further, the retarder is citric acid.
Further, the waterproof agent is a dry powder type fatty acid waterproof agent or a water type organic silicon waterproof agent; when the waterproof agent is a dry powder type fatty acid waterproof agent, the waterproof agent is directly mixed and stirred with gypsum powder and other raw materials when in use; when the water-proofing agent is an aqueous organosilicon water-proofing agent, the water-proofing agent and water are stirred and emulsified at high speed in a stirrer with the rotating speed of 1200-1500 r/min.
Further, the water reducing agent is a polycarboxylic acid water reducing agent or a lignosulfonate water reducing agent.
Furthermore, the rubber powder is common polymer materials such as plastic powder.
Further, the preparation method of the anti-crack gypsum mortar capable of effectively filling cracks or cavities comprises the following steps:
(1) weighing: weighing gypsum powder, desulfurized gypsum, phosphogypsum-based gypsum powder, a retarder, a waterproof agent, a water reducing agent, anti-crack fibers and rubber powder according to the weight percentage for later use;
(2) mixing: and (2) feeding the raw materials in the step (1) into a mixer, opening a mixer stirrer, and fully stirring at the rotating speed of 160-200 r/min for 5-10 min to uniformly stir all the materials to obtain the crack or cavity effectively filled anti-crack gypsum mortar.
Further, a method for using the crack or void effective filling crack or void resistant gypsum mortar as described above, comprising the steps of: firstly, measuring and calculating the volume of a space to be blocked or filled, then adding water into the anti-crack gypsum mortar, stirring by using a high-speed forced stirrer, and quickly and directly pouring the stirred anti-crack gypsum mortar slurry into a house interlayer or hole space to be filled within 100-120 s; and (3) calculating the volume of the space according to the fact that the volume of the foamed anti-crack gypsum mortar is 4-5 times of the volume of the foamed anti-crack gypsum mortar before foaming, stirring for 30-35 s, and pouring the mortar into an interlayer or a hole of a house for 15-20 min to complete foaming.
The retarder has the function of adjusting the setting speed of the gypsum mortar and ensuring the construction performance of the product. The retarder and the addition amount used in the invention can make the setting time of the gypsum mortar more than or equal to 30 min.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
the anti-crack gypsum mortar can effectively inhibit the plastic cracking of the gypsum mortar, does not fall off or crack under the action of self weight and environment in construction or for a long time, can effectively protect the wall and the ground from being eroded by wind, rain and harmful impurities, improves the moisture-proof, corrosion-resistant and weathering-resistant performances, and increases the durability.
Detailed Description
The following is a detailed description of the embodiments of the present invention, but the present invention is not limited to these embodiments, and any modifications or substitutions in the basic spirit of the embodiments are included in the scope of the present invention as claimed in the claims.
Example 1
An anti-crack gypsum mortar capable of effectively filling cracks or cavities is prepared from the following raw materials in parts by weight: 150 parts of gypsum powder, 55 parts of desulfurized gypsum, 35 parts of phosphogypsum-based gypsum powder, 0.1 part of retarder, 0.1 part of waterproof agent, 0.1 part of water reducing agent, 1 part of anti-crack fiber and 0.5 part of rubber powder.
Further, the gypsum powder is phosphogypsum-based gypsum powder, is gypsum powder calcined at a high temperature of 300 ℃ and contains about 30 percent of anhydrous type beta gypsum; the desulfurized gypsum is gypsum calcined at 155 ℃ for 1.8 h; the phosphogypsum-based gypsum powder is gypsum powder calcined at a high temperature of 300-450 ℃, and contains about 30% of anhydrous type beta gypsum; the retarder is citric acid; the waterproof agent is a dry powder type fatty acid waterproof agent or a water agent type organic silicon waterproof agent; when the waterproof agent is a dry powder type fatty acid waterproof agent, the waterproof agent is directly mixed and stirred with gypsum powder and other raw materials when in use; when the waterproof agent is water-based organosilicon waterproof agent, the waterproof agent and water are stirred and emulsified at high speed in a stirrer with the rotating speed of 1200 r/min; the water reducing agent is a polycarboxylic acid water reducing agent or a lignosulfonate water reducing agent; the rubber powder is common high polymer materials such as plastic powder and the like.
A preparation method of anti-crack gypsum mortar capable of effectively filling cracks or cavities comprises the following steps:
(1) weighing: weighing gypsum powder, desulfurized gypsum, phosphogypsum-based gypsum powder, a retarder, a waterproof agent, a water reducing agent, anti-crack fibers and rubber powder according to the weight percentage for later use;
(2) mixing: and (2) feeding the raw materials in the step (1) into a mixer, opening a mixer stirrer, and fully stirring at the rotating speed of 160r/min for 5min to uniformly stir the materials to obtain the anti-crack gypsum mortar capable of effectively filling cracks or cavities.
A method for using the crack or void effective filling crack or void resistant gypsum mortar as described above, comprising the steps of: firstly, measuring and calculating the volume of a space to be blocked or filled, then adding water into the anti-crack gypsum mortar, stirring by using a high-speed forced stirrer, and quickly and directly pouring the stirred anti-crack gypsum mortar slurry into a house interlayer or a hole space to be filled within 100 seconds; and (3) calculating the volume of the space according to the fact that the volume of the foamed anti-crack gypsum mortar is 4-5 times of the volume of the foamed anti-crack gypsum mortar before foaming, stirring for 30s, and pouring the mortar into an interlayer or a hole of a house for 15min to complete foaming.
Example 2
An anti-crack gypsum mortar capable of effectively filling cracks or cavities is prepared from the following raw materials in parts by weight: 200 parts of gypsum powder, 85 parts of desulfurized gypsum, 55 parts of phosphogypsum-based gypsum powder, 0.5 part of retarder, 0.5 part of waterproof agent, 0.5 part of water reducing agent, 5 parts of anti-crack fiber and 1.0 part of rubber powder.
Further, the gypsum powder is phosphogypsum-based gypsum powder, is gypsum powder calcined at the high temperature of 450 ℃ and contains about 30 percent of anhydrous type beta gypsum; the desulfurized gypsum is gypsum calcined at 175 ℃ for 2.3 h; the phosphogypsum-based gypsum powder is gypsum powder calcined at a high temperature of 450 ℃ and contains about 30 percent of anhydrous type beta gypsum; the retarder is citric acid; the waterproof agent is a dry powder type fatty acid waterproof agent or a water agent type organic silicon waterproof agent; when the waterproof agent is a dry powder type fatty acid waterproof agent, the waterproof agent is directly mixed and stirred with gypsum powder and other raw materials when in use; when the waterproof agent is water-based organosilicon waterproof agent, the waterproof agent and water are stirred and emulsified at high speed in a stirrer with the rotating speed of 1500 r/min; the water reducing agent is a polycarboxylic acid water reducing agent or a lignosulfonate water reducing agent; the rubber powder is common high polymer materials such as plastic powder and the like.
A preparation method of anti-crack gypsum mortar capable of effectively filling cracks or cavities comprises the following steps:
(1) weighing: weighing gypsum powder, desulfurized gypsum, phosphogypsum-based gypsum powder, a retarder, a waterproof agent, a water reducing agent, anti-crack fibers and rubber powder according to the weight percentage for later use;
(2) mixing: and (2) feeding the raw materials in the step (1) into a mixer, opening a mixer stirrer, and fully stirring at the rotating speed of 200r/min for 10min to uniformly stir the materials to obtain the anti-crack gypsum mortar capable of effectively filling cracks or cavities.
A method for using the crack or void effective filling crack or void resistant gypsum mortar as described above, comprising the steps of: firstly, measuring and calculating the volume of a space to be blocked or filled, then adding water into the anti-crack gypsum mortar, stirring by using a high-speed forced stirrer, and quickly and directly pouring the stirred anti-crack gypsum mortar slurry into a house interlayer or a hole space to be filled within 120 s; and (3) calculating the volume of the space according to the volume of the foamed anti-crack gypsum mortar which is 5 times of the volume of the foamed anti-crack gypsum mortar before foaming, stirring for 35s, and pouring the mortar into the interlayer or the hole of the house for 20min to complete foaming.
Example 3
An anti-crack gypsum mortar capable of effectively filling cracks or cavities is prepared from the following raw materials in parts by weight: 160 parts of gypsum powder, 65 parts of desulfurized gypsum, 40 parts of phosphogypsum-based gypsum powder, 0.2 part of retarder, 0.2 part of waterproof agent, 0.2 part of water reducing agent, 2 parts of anti-crack fiber and 0.6 part of rubber powder.
Further, the gypsum powder is phosphogypsum-based gypsum powder, is gypsum powder calcined at the high temperature of 350 ℃ and contains about 30 percent of anhydrous type beta gypsum; the desulfurized gypsum is gypsum calcined at 160 ℃ for 1.9 h; the phosphogypsum-based gypsum powder is gypsum powder calcined at the high temperature of 350 ℃ and contains about 30 percent of anhydrous type beta gypsum; the retarder is citric acid; the waterproof agent is a dry powder type fatty acid waterproof agent or a water agent type organic silicon waterproof agent; when the waterproof agent is a dry powder type fatty acid waterproof agent, the waterproof agent is directly mixed and stirred with gypsum powder and other raw materials when in use; when the waterproof agent is an aqueous organosilicon waterproof agent, the waterproof agent and water are stirred and emulsified at high speed in a stirrer with the rotating speed of 1200-1500 r/min; the water reducing agent is a polycarboxylic acid water reducing agent or a lignosulfonate water reducing agent; the rubber powder is common high polymer materials such as plastic powder and the like.
A preparation method of anti-crack gypsum mortar capable of effectively filling cracks or cavities comprises the following steps:
(1) weighing: weighing gypsum powder, desulfurized gypsum, phosphogypsum-based gypsum powder, a retarder, a waterproof agent, a water reducing agent, anti-crack fibers and rubber powder according to the weight percentage for later use;
(2) mixing: and (2) feeding the raw materials in the step (1) into a mixer, opening a mixer stirrer, and fully stirring at the rotating speed of 170r/min for 6min to uniformly stir the materials to obtain the anti-crack gypsum mortar capable of effectively filling cracks or cavities.
A method for using the crack or void effective filling crack or void resistant gypsum mortar as described above, comprising the steps of: firstly, measuring and calculating the volume of a space to be blocked or filled, then adding water into the anti-crack gypsum mortar, stirring by using a high-speed forced stirrer, and quickly and directly pouring the stirred anti-crack gypsum mortar slurry into a building interlayer or a hole space to be filled within 105 s; and (3) calculating the volume of the space according to the fact that the volume of the foamed anti-crack gypsum mortar is 4.2 times of that of the gypsum mortar before foaming, stirring for 31s, and pouring the gypsum mortar into the interlayer or the hole of the house for 16min to complete foaming.
Example 4
An anti-crack gypsum mortar capable of effectively filling cracks or cavities is prepared from the following raw materials in parts by weight: 190 parts of gypsum powder, 75 parts of desulfurized gypsum, 50 parts of phosphogypsum-based gypsum powder, 0.4 part of retarder, 0.4 part of waterproof agent, 0.4 part of water reducing agent, 4 parts of anti-crack fiber and 0.9 part of rubber powder.
Further, the gypsum powder is phosphogypsum-based gypsum powder, is gypsum powder calcined at the high temperature of 400 ℃, and contains about 30 percent of anhydrous type beta gypsum; the desulfurized gypsum is gypsum calcined at 170 ℃ for 2.2 hours; the phosphogypsum-based gypsum powder is gypsum powder calcined at a high temperature of 400 ℃ and contains about 30 percent of anhydrous type beta gypsum; the retarder is citric acid; the waterproof agent is a dry powder type fatty acid waterproof agent or a water agent type organic silicon waterproof agent; when the waterproof agent is a dry powder type fatty acid waterproof agent, the waterproof agent is directly mixed and stirred with gypsum powder and other raw materials when in use; when the waterproof agent is water-based organosilicon waterproof agent, the waterproof agent and water are stirred and emulsified at high speed in a stirrer with the rotating speed of 1400 r/min; the water reducing agent is a polycarboxylic acid water reducing agent or a lignosulfonate water reducing agent; the rubber powder is common high polymer materials such as plastic powder and the like.
A preparation method of anti-crack gypsum mortar capable of effectively filling cracks or cavities comprises the following steps:
(1) weighing: weighing gypsum powder, desulfurized gypsum, phosphogypsum-based gypsum powder, a retarder, a waterproof agent, a water reducing agent, anti-crack fibers and rubber powder according to the weight percentage for later use;
(2) mixing: and (2) feeding the raw materials in the step (1) into a mixer, opening a mixer stirrer, and fully stirring at the rotating speed of 190r/min for 9min to uniformly stir the materials to obtain the anti-crack gypsum mortar capable of effectively filling cracks or cavities.
A method for using the crack or void effective filling crack or void resistant gypsum mortar as described above, comprising the steps of: firstly, measuring and calculating the volume of a space to be blocked or filled, then adding water into the anti-crack gypsum mortar, stirring by using a high-speed forced stirrer, and quickly and directly pouring the stirred anti-crack gypsum mortar slurry into a house interlayer or a hole space to be filled within 115 seconds; and (3) calculating the volume of the space according to the fact that the volume of the foamed anti-crack gypsum mortar is 4.8 times of that of the gypsum mortar before foaming, stirring for 34s, and pouring the gypsum mortar into the interlayer or the hole of the house for 19min to complete foaming.
Example 5
An anti-crack gypsum mortar capable of effectively filling cracks or cavities is prepared from the following raw materials in parts by weight: 180 parts of gypsum powder, 70 parts of desulfurized gypsum, 45 parts of phosphogypsum-based gypsum powder, 0.3 part of retarder, 0.3 part of waterproof agent, 0.3 part of water reducing agent, 3 parts of anti-crack fiber and 0.7 part of rubber powder.
Further, the gypsum powder is phosphogypsum-based gypsum powder, is gypsum powder calcined at the high temperature of 380 ℃, and contains about 30 percent of anhydrous type beta gypsum; the desulfurized gypsum is gypsum calcined at 165 ℃ for 2.0 h; the phosphogypsum-based gypsum powder is gypsum powder calcined at a high temperature of 380 ℃ and contains about 30 percent of anhydrous type beta gypsum; the retarder is citric acid; the waterproof agent is a dry powder type fatty acid waterproof agent or a water agent type organic silicon waterproof agent; when the waterproof agent is a dry powder type fatty acid waterproof agent, the waterproof agent is directly mixed and stirred with gypsum powder and other raw materials when in use; when the water-proofing agent is water-based organosilicon water-proofing agent, firstly stirring and emulsifying the water-proofing agent and water at high speed in a stirrer with the rotating speed of 1350 r/min; the water reducing agent is a polycarboxylic acid water reducing agent or a lignosulfonate water reducing agent; the rubber powder is common high polymer materials such as plastic powder and the like.
A preparation method of anti-crack gypsum mortar capable of effectively filling cracks or cavities comprises the following steps:
(1) weighing: weighing gypsum powder, desulfurized gypsum, phosphogypsum-based gypsum powder, a retarder, a waterproof agent, a water reducing agent, anti-crack fibers and rubber powder according to the weight percentage for later use;
(2) mixing: and (2) feeding the raw materials in the step (1) into a mixer, opening a mixer stirrer, and fully stirring at the rotating speed of 180r/min for 8min to uniformly stir the materials to obtain the anti-crack gypsum mortar capable of effectively filling cracks or cavities.
A method for using the crack or void effective filling crack or void resistant gypsum mortar as described above, comprising the steps of: firstly, measuring and calculating the volume of a space to be blocked or filled, then adding water into the anti-crack gypsum mortar, stirring by using a high-speed forced stirrer, and quickly and directly pouring the stirred anti-crack gypsum mortar slurry into a house interlayer or a hole space to be filled within 110 s; and (3) calculating the volume of the space according to the condition that the volume of the foamed anti-crack gypsum mortar is 4.5 times of the volume of the foamed anti-crack gypsum mortar before foaming, stirring for 33s, and pouring the mortar into the interlayer or the hole of the house for 18min to complete foaming.
Comparative example 1
The gypsum mortar was prepared according to the example method in patent application CN202110065585.5 (a gypsum mortar).
Comparative example 2
Gypsum mortar was prepared according to the example method in patent application CN202010116017.9 (an ardealite mortar for load bearing structures and its preparation method).
Comparative example 3
The gypsum mortar was prepared according to the example method in patent application CN202010297538.9 (a slag-based mildewproof heat-preserving gypsum mortar and its preparation method).
To further illustrate that the present invention can achieve the technical effects, the following experiments were performed:
the gypsum mortar prepared in the embodiments 1-5 and the comparative examples 1-2 is used for filling cracks or cavities, and the result shows that the gypsum mortar prepared in the comparative examples 1-2 does not fall off or crack under the action of self weight and environment in construction or for a long time after being filled, but the crack-resistant gypsum mortar does not have the problems, can effectively prevent water and fire, and can effectively avoid uncontrollable factors in the aspect of safety.
To sum up, this application crack resistant gypsum mortar can effectively restrain gypsum mortar plasticity fracture, in the construction or long-term dead weight and environmental effect down do not drop, do not ftracture, can effectively protect wall body, ground not receive the erosion of wind and rain and harmful impurity, improve dampproofing, anticorrosion, weather-resistant performance, increase durability.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (10)
1. The anti-crack gypsum mortar capable of effectively filling cracks or cavities is characterized by being prepared from the following raw materials in parts by weight: 150-200 parts of gypsum powder, 55-85 parts of desulfurized gypsum, 35-55 parts of phosphogypsum-based gypsum powder, 0.1-0.5 part of retarder, 0.1-0.5 part of waterproof agent, 0.1-0.5 part of water reducing agent, 1-5 parts of anti-crack fiber and 0.5-1.0 part of rubber powder.
2. The crack or void effective filling gypsum mortar of claim 1, wherein: the gypsum powder is phosphogypsum-based gypsum powder, is gypsum powder calcined at a high temperature of 300-450 ℃, and contains about 30% of anhydrous type beta gypsum.
3. The crack or void effective filling gypsum mortar of claim 1, wherein: the desulfurized gypsum is gypsum calcined at 155-175 ℃ for 1.8-2.3 h.
4. The crack or void effective filling gypsum mortar of claim 1, wherein: the phosphogypsum-based gypsum powder is gypsum powder calcined at a high temperature of 300-450 ℃ and contains about 30 percent of anhydrous type beta gypsum.
5. The crack or void effective filling gypsum mortar of claim 1, wherein: the retarder is citric acid.
6. The crack or void effective filling gypsum mortar of claim 1, wherein: the waterproof agent is a dry powder type fatty acid waterproof agent or a water agent type organic silicon waterproof agent; when the waterproof agent is a dry powder type fatty acid waterproof agent, the waterproof agent is directly mixed and stirred with gypsum powder and other raw materials when in use; when the water-proofing agent is an aqueous organosilicon water-proofing agent, the water-proofing agent and water are stirred and emulsified at high speed in a stirrer with the rotating speed of 1200-1500 r/min.
7. The crack or void effective filling gypsum mortar of claim 1, wherein: the water reducing agent is a polycarboxylic acid water reducing agent or a lignosulfonate water reducing agent.
8. The crack or void effective filling gypsum mortar of claim 1, wherein: the rubber powder is common high polymer materials such as plastic powder and the like.
9. The method for preparing the crack or cavity filling effective crack or cavity crack resistant gypsum mortar according to any one of claims 1 to 8, comprising the following steps:
(1) weighing: weighing gypsum powder, desulfurized gypsum, phosphogypsum-based gypsum powder, a retarder, a waterproof agent, a water reducing agent, anti-crack fibers and rubber powder according to the weight percentage for later use;
(2) mixing: and (2) feeding the raw materials in the step (1) into a mixer, opening a mixer stirrer, and fully stirring at the rotating speed of 160-200 r/min for 5-10 min to uniformly stir all the materials to obtain the crack or cavity effectively filled anti-crack gypsum mortar.
10. A method of using the crack or void efficient filling crack or void resistant gypsum mortar of any one of claims 1-9, comprising the steps of: firstly, measuring and calculating the volume of a space to be blocked or filled, then adding water into the anti-crack gypsum mortar, stirring by using a high-speed forced stirrer, and quickly and directly pouring the stirred anti-crack gypsum mortar slurry into a house interlayer or hole space to be filled within 100-120 s; and (3) calculating the volume of the space according to the fact that the volume of the foamed anti-crack gypsum mortar is 4-5 times of the volume of the foamed anti-crack gypsum mortar before foaming, stirring for 30-35 s, and pouring the mortar into an interlayer or a hole of a house for 15-20 min to complete foaming.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114773019A (en) * | 2022-05-16 | 2022-07-22 | 安徽盛城新型材料有限公司 | Caulking plaster with high crack resistance |
| CN114853427A (en) * | 2022-06-13 | 2022-08-05 | 诸暨市幄肯中智新材料有限公司 | Enhanced polymer ball filled light composite material and preparation method thereof |
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| WO2012159848A1 (en) * | 2011-05-24 | 2012-11-29 | Wacker Chemie Ag | Process for producing protective colloid-stabilized polymers |
| CN104556925A (en) * | 2013-10-16 | 2015-04-29 | 同济大学 | Gypsum-based seal mortar for through-wall holes and preparation method of gypsum-based seal mortar |
| CN105016693A (en) * | 2015-07-08 | 2015-11-04 | 济南大学 | Caulking anti-crack mortar |
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2021
- 2021-11-08 CN CN202111314490.9A patent/CN114057463A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2012159848A1 (en) * | 2011-05-24 | 2012-11-29 | Wacker Chemie Ag | Process for producing protective colloid-stabilized polymers |
| CN104556925A (en) * | 2013-10-16 | 2015-04-29 | 同济大学 | Gypsum-based seal mortar for through-wall holes and preparation method of gypsum-based seal mortar |
| CN105016693A (en) * | 2015-07-08 | 2015-11-04 | 济南大学 | Caulking anti-crack mortar |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114773019A (en) * | 2022-05-16 | 2022-07-22 | 安徽盛城新型材料有限公司 | Caulking plaster with high crack resistance |
| CN114853427A (en) * | 2022-06-13 | 2022-08-05 | 诸暨市幄肯中智新材料有限公司 | Enhanced polymer ball filled light composite material and preparation method thereof |
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