CN116425449B - Mortar additive and application thereof - Google Patents
Mortar additive and application thereof Download PDFInfo
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- CN116425449B CN116425449B CN202310301982.7A CN202310301982A CN116425449B CN 116425449 B CN116425449 B CN 116425449B CN 202310301982 A CN202310301982 A CN 202310301982A CN 116425449 B CN116425449 B CN 116425449B
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- 239000004570 mortar (masonry) Substances 0.000 title claims abstract description 115
- 239000000654 additive Substances 0.000 title claims abstract description 55
- 230000000996 additive effect Effects 0.000 title claims abstract description 54
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical class O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims abstract description 117
- 238000002156 mixing Methods 0.000 claims abstract description 73
- 229920005989 resin Polymers 0.000 claims abstract description 40
- 239000011347 resin Substances 0.000 claims abstract description 40
- 239000002994 raw material Substances 0.000 claims abstract description 33
- RYAGRZNBULDMBW-UHFFFAOYSA-L calcium;3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical class [Ca+2].COC1=CC=CC(CC(CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O RYAGRZNBULDMBW-UHFFFAOYSA-L 0.000 claims abstract description 32
- 239000000084 colloidal system Substances 0.000 claims abstract description 30
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims abstract description 27
- 238000003756 stirring Methods 0.000 claims abstract description 24
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 19
- 235000019353 potassium silicate Nutrition 0.000 claims abstract description 19
- QNVRIHYSUZMSGM-UHFFFAOYSA-N hexan-2-ol Chemical compound CCCCC(C)O QNVRIHYSUZMSGM-UHFFFAOYSA-N 0.000 claims abstract 8
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 claims abstract 4
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract 4
- 238000002360 preparation method Methods 0.000 claims description 45
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 33
- 238000006243 chemical reaction Methods 0.000 claims description 24
- WGTYBPLFGIVFAS-UHFFFAOYSA-M tetramethylammonium hydroxide Chemical compound [OH-].C[N+](C)(C)C WGTYBPLFGIVFAS-UHFFFAOYSA-M 0.000 claims description 24
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 22
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 22
- 239000006260 foam Substances 0.000 claims description 22
- 238000010438 heat treatment Methods 0.000 claims description 22
- 239000003607 modifier Substances 0.000 claims description 22
- 239000000178 monomer Substances 0.000 claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 229920005551 calcium lignosulfonate Polymers 0.000 claims description 14
- -1 isopentenyl Chemical group 0.000 claims description 14
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 13
- 238000010276 construction Methods 0.000 claims description 13
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 13
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 13
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 13
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 13
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 13
- 238000005507 spraying Methods 0.000 claims description 12
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims description 11
- ROMCRKSGDFOTBY-UHFFFAOYSA-N CCC[SiH2]C Chemical compound CCC[SiH2]C ROMCRKSGDFOTBY-UHFFFAOYSA-N 0.000 claims description 11
- 229920000877 Melamine resin Polymers 0.000 claims description 11
- 239000004115 Sodium Silicate Substances 0.000 claims description 11
- 229960000583 acetic acid Drugs 0.000 claims description 11
- 229910021538 borax Inorganic materials 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 11
- 238000007599 discharging Methods 0.000 claims description 11
- UQGFMSUEHSUPRD-UHFFFAOYSA-N disodium;3,7-dioxido-2,4,6,8,9-pentaoxa-1,3,5,7-tetraborabicyclo[3.3.1]nonane Chemical compound [Na+].[Na+].O1B([O-])OB2OB([O-])OB1O2 UQGFMSUEHSUPRD-UHFFFAOYSA-N 0.000 claims description 11
- WNAHIZMDSQCWRP-UHFFFAOYSA-N dodecane-1-thiol Chemical compound CCCCCCCCCCCCS WNAHIZMDSQCWRP-UHFFFAOYSA-N 0.000 claims description 11
- 238000001914 filtration Methods 0.000 claims description 11
- 239000012362 glacial acetic acid Substances 0.000 claims description 11
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims description 11
- HMMGMWAXVFQUOA-UHFFFAOYSA-N octamethylcyclotetrasiloxane Chemical compound C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1 HMMGMWAXVFQUOA-UHFFFAOYSA-N 0.000 claims description 11
- IWZKICVEHNUQTL-UHFFFAOYSA-M potassium hydrogen phthalate Chemical compound [K+].OC(=O)C1=CC=CC=C1C([O-])=O IWZKICVEHNUQTL-UHFFFAOYSA-M 0.000 claims description 11
- 229920002545 silicone oil Polymers 0.000 claims description 11
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 11
- 239000004328 sodium tetraborate Substances 0.000 claims description 11
- 235000010339 sodium tetraborate Nutrition 0.000 claims description 11
- 239000000853 adhesive Substances 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 5
- 239000003365 glass fiber Substances 0.000 claims 1
- 239000004568 cement Substances 0.000 abstract description 17
- 238000012360 testing method Methods 0.000 abstract description 7
- 238000012423 maintenance Methods 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 14
- 239000000203 mixture Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 230000014759 maintenance of location Effects 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- SMRKAPSTEFVTEH-UHFFFAOYSA-N 2-Methyl-dodecane-5-one Natural products CCCCCCCC(=O)CCC(C)C SMRKAPSTEFVTEH-UHFFFAOYSA-N 0.000 description 2
- KWOLFJPFCHCOCG-UHFFFAOYSA-N Acetophenone Chemical compound CC(=O)C1=CC=CC=C1 KWOLFJPFCHCOCG-UHFFFAOYSA-N 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- 229920001732 Lignosulfonate Polymers 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 235000010755 mineral Nutrition 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 2
- 235000021314 Palmitic acid Nutrition 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 1
- 235000011130 ammonium sulphate Nutrition 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- KZNICNPSHKQLFF-UHFFFAOYSA-N dihydromaleimide Natural products O=C1CCC(=O)N1 KZNICNPSHKQLFF-UHFFFAOYSA-N 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- NVVZQXQBYZPMLJ-UHFFFAOYSA-N formaldehyde;naphthalene-1-sulfonic acid Chemical compound O=C.C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 NVVZQXQBYZPMLJ-UHFFFAOYSA-N 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000011325 microbead Substances 0.000 description 1
- WQEPLUUGTLDZJY-UHFFFAOYSA-N n-Pentadecanoic acid Natural products CCCCCCCCCCCCCCC(O)=O WQEPLUUGTLDZJY-UHFFFAOYSA-N 0.000 description 1
- DVEKCXOJTLDBFE-UHFFFAOYSA-N n-dodecyl-n,n-dimethylglycinate Chemical compound CCCCCCCCCCCC[N+](C)(C)CC([O-])=O DVEKCXOJTLDBFE-UHFFFAOYSA-N 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000000979 retarding effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229910021487 silica fume Inorganic materials 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229960002317 succinimide Drugs 0.000 description 1
- DZLFLBLQUQXARW-UHFFFAOYSA-N tetrabutylammonium Chemical compound CCCC[N+](CCCC)(CCCC)CCCC DZLFLBLQUQXARW-UHFFFAOYSA-N 0.000 description 1
- 239000011592 zinc chloride Substances 0.000 description 1
- 235000005074 zinc chloride Nutrition 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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- 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
- C04B28/02—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 hydraulic cements other than calcium sulfates
- C04B28/04—Portland 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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/02—Selection of the hardening environment
- C04B40/0277—Hardening promoted by using additional water, e.g. by spraying water on the green concrete element
-
- 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)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a mortar additive and application thereof, and belongs to the technical field of concrete. The mortar additive comprises the following raw materials in parts by weight: modified calcium lignosulfonate: 10-30 parts of phosphogypsum: 5-15 parts of silicon carbide powder: 1-3 parts of modified polyacrylamide colloid: 30-50 parts of modified formaldehyde resin: 8-16 parts of water glass: 20-40 parts of methyl amyl alcohol: 14-20 parts; the application method comprises the following steps: transferring the raw materials of the mortar additive into a stirrer for stirring and mixing, and pouring into a mould; curing the concrete in the mould. Through tests, after the additive is mixed with P.O 42.5.5 cement in the embodiment, the performance parameters such as flexural strength, compressive strength, final setting time and the like, such as plasticity maintenance time, are effectively improved.
Description
Technical Field
The invention belongs to the technical field of concrete, and particularly relates to an improved mortar additive and application thereof.
Background
The existing anti-floating anchor concrete is mainly used for improving the strength of the concrete by means of reducing the water cement ratio, increasing the consumption of cementing materials, optimizing fine sand, stones and the like, but the viscosity of the concrete is increased, the fluidity is reduced, so that the pumpability of the concrete is reduced, the construction efficiency is greatly reduced, and the popularization and the application of the anti-floating anchor concrete in the super high-rise field are greatly limited especially for the anti-floating anchor concrete. In order to solve the problems of high viscosity, poor fluidity and the like of an anti-floating anchor concrete mixture, two main methods exist at present: the first method is to mix superfine powder such as superfine mineral powder, silica fume, microbeads and the like, optimize the grain composition of the glue material to reduce the viscosity of the concrete, but the addition of the superfine powder can greatly increase the cost of the concrete, and the viscosity reduction effect of the anti-floating anchor concrete can not completely meet the requirement; the second type adopts viscosity-reducing additive, and the slump retention time of the concrete mixture cannot be ensured.
For example, chinese invention issued patent, publication No.: CN106477943B, its technical scheme relates to: the material is prepared from the following raw materials in parts by weight: 16-22 parts of calcium hydroxide, 10-16 parts of isopropanol, 8-12 parts of zinc chloride, 2-8 parts of 2-methyl-dodecane-5-one, 4-10 parts of dodecyl dimethyl betaine, 2-6 parts of lignosulfonate, 1-5 parts of alkyl succinimide, 6-10 parts of acetophenone, 2-8 parts of ammonium sulfate, 4-10 parts of tetrabutylammonium borohydride, 5-9 parts of palmitic acid and 6-12 parts of stigmatrienol. However, the above technical solution is tested by the my, and the effect is general, and a long final setting time is required, so that the method is not suitable for large-scale popularization and application in north, especially in northeast.
Disclosure of Invention
1. Problems to be solved
According to the test, after the external additive is mixed with P.O 42.5 cement, the performance parameters such as flexural strength, compressive strength, final setting, plastic time retention and the like are effectively improved.
2. Technical proposal
In order to solve the problems, the invention adopts the following technical scheme.
The mortar additive comprises the following raw materials in parts by weight:
the mortar admixture as described above,
The adhesive comprises the following raw materials in parts by weight:
the mortar admixture as described above,
The adhesive comprises the following raw materials in parts by weight:
the mortar admixture as described above,
The preparation method of the modified calcium lignosulfonate comprises the following steps:
Polyvinyl alcohol, glycerol, 3-glycidol propyl methyl silane and tetramethyl ammonium hydroxide are mixed according to the mass ratio of (20-30): (50-60): (5-8): (2-10), heating to 100-120 ℃, removing floating foam, pouring the foam onto calcium lignosulfonate, stirring and uniformly mixing, and naturally airing.
The mortar admixture as described above,
The preparation method of the modified polyacrylamide colloid comprises the following steps:
Ethylene-vinyl acetate copolymer, acrylamide monomer, silicone oil, isopentenyl polyoxyethylene ether and dodecyl mercaptan are mixed according to the mass ratio of (50-55): (60-70): (80-85): (100-120): (30-35), transferring the mixture into a screw machine, and setting the discharging temperature to be 60-65 ℃ to obtain the colloid.
The mortar admixture as described above,
The preparation method of the modified formaldehyde resin comprises the following steps:
Mixing octamethyl cyclotetrasiloxane, potassium hydrogen phthalate, glacial acetic acid and acetone to obtain a modifier, heating and mixing melamine and formaldehyde to obtain formaldehyde resin monomer, adding the modifier into the formaldehyde resin monomer, controlling the reaction temperature to be 65-70 ℃, and cooling after the reaction.
The mortar admixture as described above,
The preparation method of the water glass comprises the following steps:
sodium tetraborate and sodium silicate with the mass concentration of 60% are mixed according to the mass ratio of (2-6): (17-20), and then vacuum filtering.
The use of a mortar admixture as described above,
The application method comprises the following steps:
Transferring the raw materials of the mortar additive into a stirrer for stirring and mixing, and pouring into a mould; curing the concrete in the mould.
The application of the mortar additive,
The specific operation of pouring into the mold is as follows:
And (3) carrying out standing treatment on the concrete, wherein the standing pressure is 8-10 MPa, the standing temperature is 25 ℃, the standing humidity is 40-60%, and the standing time is 72h.
The application of the mortar additive,
The operation mode of curing is as follows:
removing the mould, transferring the mould into a curing chamber of a construction site, controlling the temperature of the curing chamber to be 25 ℃, and controlling the humidity of the curing chamber to be 80%; the curing period was 28d, wherein the spraying of water on the concrete surface was performed every 7 d.
3. Advantageous effects
Compared with the prior art, the invention has the beneficial effects that:
According to tests, in the invention, after the admixture in the examples 1-5 is mixed with P.O 42.5 cement, the performance parameters such as flexural strength, compressive strength, final setting time and the like, such as plastic time, are effectively improved; specifically, in comparative example 1, the modified calcium lignosulfonate was removed, and it was found that the compressive strength and flexural strength parameters were significantly reduced, and the final setting time/retention plasticity time was increased, and it was found that the interaction of polyvinyl alcohol and tetramethylammonium hydroxide functions to improve calcium lignosulfonate, and although the prior art also discloses the use of an admixture of modified polyacrylamide colloid, in comparative example 2, the modified polyacrylamide colloid required an ethylene-vinyl acetate copolymer in combination with isopentenyl polyoxyethylene ether, so that the friction force between cement raw material particles was reduced, and the curing effect of cement was promoted. In comparative example 3, the modified formaldehyde resin was removed from the retarder in the admixture, and the conventional admixture was rarely added with the above substances, which is required to consider that the hydration progress of cement would be affected in a usual case, and the rate of mortar crystallization was retarded. Comparative examples 4 and 5 were subjected to a water glass removal treatment, which, through years of empirical analysis, may be involved in the bleed air effect, whereas water glass may reduce the segregation reaction of the mortar and thus increase the strength.
Detailed Description
The invention is further described below in connection with specific embodiments.
Example 1
The mortar additive comprises the following raw materials in parts by weight:
the mortar admixture as described above,
The preparation method of the modified calcium lignosulfonate comprises the following steps:
Polyvinyl alcohol, glycerol, 3-glycidol propyl methyl silane and tetramethyl ammonium hydroxide are mixed according to the mass ratio of 30:55:7: and 6, mixing, heating to 120 ℃, removing floating foam, pouring the foam onto calcium lignosulfonate, stirring and uniformly mixing, and naturally airing.
The mortar admixture as described above,
The preparation method of the modified polyacrylamide colloid comprises the following steps:
Ethylene-vinyl acetate copolymer, acrylamide monomer, silicone oil, isopentenyl polyoxyethylene ether and dodecyl mercaptan are mixed according to the mass ratio of 53:65:83:120:33, transferring to a screw machine, setting the discharging temperature to 64 ℃, and obtaining the colloid.
The mortar admixture as described above,
The preparation method of the modified formaldehyde resin comprises the following steps:
mixing octamethyl cyclotetrasiloxane, potassium hydrogen phthalate, glacial acetic acid and acetone to obtain a modifier, heating and mixing melamine and formaldehyde to obtain formaldehyde resin monomer, adding the modifier into the formaldehyde resin monomer, controlling the reaction temperature to be 68 ℃, and cooling after the reaction.
The mortar admixture as described above,
The preparation method of the water glass comprises the following steps:
mixing sodium tetraborate with 60% sodium silicate by mass ratio of 4:19, and then vacuum filtering.
The use of a mortar admixture as described above,
The application method comprises the following steps:
Transferring the raw materials of the mortar additive into a stirrer for stirring and mixing, and pouring into a mould; curing the concrete in the mould.
The application of the mortar additive,
The specific operation of pouring into the mold is as follows:
The concrete was subjected to a leaving process in which the pressure of leaving was 9MPa, in which the temperature of leaving was 25 ℃, in which the humidity of leaving was 50%, and in which the time of leaving was 72 hours.
The application of the mortar additive,
The operation mode of curing is as follows:
removing the mould, transferring the mould into a curing chamber of a construction site, controlling the temperature of the curing chamber to be 25 ℃, and controlling the humidity of the curing chamber to be 80%; the curing period was 28d, wherein the spraying of water on the concrete surface was performed every 7 d.
Example 2
The mortar additive comprises the following raw materials in parts by weight:
the mortar admixture as described above,
The preparation method of the modified calcium lignosulfonate comprises the following steps:
Polyvinyl alcohol, glycerol, 3-glycidol propyl methyl silane and tetramethyl ammonium hydroxide are mixed according to the mass ratio of 30:60:8:19, heating to 120 ℃, removing floating foam, pouring the foam onto calcium lignosulfonate, stirring and uniformly mixing, and naturally airing.
The mortar admixture as described above,
The preparation method of the modified polyacrylamide colloid comprises the following steps:
ethylene-vinyl acetate copolymer, acrylamide monomer, silicone oil, isopentenyl polyoxyethylene ether and dodecyl mercaptan are mixed according to the mass ratio of 55:70:85:120:35, transferring the mixture into a screw machine, and setting the discharging temperature to 65 ℃ to obtain the colloid.
The mortar admixture as described above,
The preparation method of the modified formaldehyde resin comprises the following steps:
Mixing octamethyl cyclotetrasiloxane, potassium hydrogen phthalate, glacial acetic acid and acetone to obtain a modifier, heating and mixing melamine and formaldehyde to obtain formaldehyde resin monomer, adding the modifier into the formaldehyde resin monomer, controlling the reaction temperature to be 70 ℃, and cooling after the reaction.
The mortar admixture as described above,
The preparation method of the water glass comprises the following steps:
mixing sodium tetraborate with 60% sodium silicate by mass ratio of 6:20, mixing, and vacuum filtering.
The use of a mortar admixture as described above,
The application method comprises the following steps:
Transferring the raw materials of the mortar additive into a stirrer for stirring and mixing, and pouring into a mould; curing the concrete in the mould.
The application of the mortar additive,
The specific operation of pouring into the mold is as follows:
the concrete was subjected to a leaving process in which the pressure of leaving was 10MPa, in which the temperature of leaving was 25 ℃, in which the humidity of leaving was 60%, and in which the time of leaving was 72 hours.
The application of the mortar additive,
The operation mode of curing is as follows:
removing the mould, transferring the mould into a curing chamber of a construction site, controlling the temperature of the curing chamber to be 25 ℃, and controlling the humidity of the curing chamber to be 80%; the curing period was 28d, wherein the spraying of water on the concrete surface was performed every 7 d.
Example 3
The mortar additive comprises the following raw materials in parts by weight:
the mortar admixture as described above,
The preparation method of the modified calcium lignosulfonate comprises the following steps:
Polyvinyl alcohol, glycerol, 3-glycidol propyl methyl silane and tetramethyl ammonium hydroxide are mixed according to the mass ratio of 20:60:5:10, heating to 100 ℃, removing floating foam, pouring the foam onto calcium lignosulfonate, stirring and uniformly mixing, and naturally airing.
The mortar admixture as described above,
The preparation method of the modified polyacrylamide colloid comprises the following steps:
ethylene-vinyl acetate copolymer, acrylamide monomer, silicone oil, isopentenyl polyoxyethylene ether and dodecyl mercaptan are mixed according to the mass ratio of 50:70:80:120:30, mixing, transferring to a screw machine, and setting the discharging temperature to 60 ℃ to obtain the colloid.
The mortar admixture as described above,
The preparation method of the modified formaldehyde resin comprises the following steps:
Mixing octamethyl cyclotetrasiloxane, potassium hydrogen phthalate, glacial acetic acid and acetone to obtain a modifier, heating and mixing melamine and formaldehyde to obtain formaldehyde resin monomer, adding the modifier into the formaldehyde resin monomer, controlling the reaction temperature to be 65 ℃, and cooling after the reaction.
The mortar admixture as described above,
The preparation method of the water glass comprises the following steps:
mixing sodium tetraborate with 60% sodium silicate by mass ratio of 2:20, mixing, and vacuum filtering.
The use of a mortar admixture as described above,
The application method comprises the following steps:
Transferring the raw materials of the mortar additive into a stirrer for stirring and mixing, and pouring into a mould; curing the concrete in the mould.
The application of the mortar additive,
The specific operation of pouring into the mold is as follows:
The concrete was subjected to a leaving process in which the pressure of leaving was 8MPa, in which the temperature of leaving was 25 ℃, in which the humidity of leaving was 40%, and in which the time of leaving was 72 hours.
The application of the mortar additive,
The operation mode of curing is as follows:
removing the mould, transferring the mould into a curing chamber of a construction site, controlling the temperature of the curing chamber to be 25 ℃, and controlling the humidity of the curing chamber to be 80%; the curing period was 28d, wherein the spraying of water on the concrete surface was performed every 7 d.
Example 4
The mortar additive comprises the following raw materials in parts by weight:
the mortar admixture as described above,
The preparation method of the modified calcium lignosulfonate comprises the following steps:
Polyvinyl alcohol, glycerol, 3-glycidol propyl methyl silane and tetramethyl ammonium hydroxide are mixed according to the mass ratio of 30:50:8:2, mixing, heating to 100 ℃, removing floating foam, pouring the foam onto calcium lignosulfonate, stirring and mixing uniformly, and naturally airing.
The mortar admixture as described above,
The preparation method of the modified polyacrylamide colloid comprises the following steps:
Ethylene-vinyl acetate copolymer, acrylamide monomer, silicone oil, isopentenyl polyoxyethylene ether and dodecyl mercaptan are mixed according to the mass ratio of 55:60:85:100:35, transferring the mixture into a screw machine, and setting the discharging temperature to 60 ℃ to obtain the colloid.
The mortar admixture as described above,
The preparation method of the modified formaldehyde resin comprises the following steps:
Mixing octamethyl cyclotetrasiloxane, potassium hydrogen phthalate, glacial acetic acid and acetone to obtain a modifier, heating and mixing melamine and formaldehyde to obtain formaldehyde resin monomer, adding the modifier into the formaldehyde resin monomer, controlling the reaction temperature to be 65 ℃, and cooling after the reaction.
The mortar admixture as described above,
The preparation method of the water glass comprises the following steps:
mixing sodium tetraborate with 60% sodium silicate by mass ratio of 6:20, mixing, and vacuum filtering.
The use of a mortar admixture as described above,
The application method comprises the following steps:
Transferring the raw materials of the mortar additive into a stirrer for stirring and mixing, and pouring into a mould; curing the concrete in the mould.
The application of the mortar additive,
The specific operation of pouring into the mold is as follows:
The concrete was subjected to a leaving process in which the pressure of leaving was 8MPa, in which the temperature of leaving was 25 ℃, in which the humidity of leaving was 40%, and in which the time of leaving was 72 hours.
The application of the mortar additive,
The operation mode of curing is as follows:
removing the mould, transferring the mould into a curing chamber of a construction site, controlling the temperature of the curing chamber to be 25 ℃, and controlling the humidity of the curing chamber to be 80%; the curing period was 28d, wherein the spraying of water on the concrete surface was performed every 7 d.
Example 5
The mortar additive comprises the following raw materials in parts by weight:
the mortar admixture as described above,
The preparation method of the modified calcium lignosulfonate comprises the following steps:
Polyvinyl alcohol, glycerol, 3-glycidol propyl methyl silane and tetramethyl ammonium hydroxide are mixed according to the mass ratio of 20:50:5:2, mixing, heating to 100 ℃, removing floating foam, pouring the foam onto calcium lignosulfonate, stirring and mixing uniformly, and naturally airing.
The mortar admixture as described above,
The preparation method of the modified polyacrylamide colloid comprises the following steps:
ethylene-vinyl acetate copolymer, acrylamide monomer, silicone oil, isopentenyl polyoxyethylene ether and dodecyl mercaptan are mixed according to the mass ratio of 50:60:80:100:30, mixing, transferring to a screw machine, and setting the discharging temperature to 60 ℃ to obtain the colloid.
The mortar admixture as described above,
The preparation method of the modified formaldehyde resin comprises the following steps:
Mixing octamethyl cyclotetrasiloxane, potassium hydrogen phthalate, glacial acetic acid and acetone to obtain a modifier, heating and mixing melamine and formaldehyde to obtain formaldehyde resin monomer, adding the modifier into the formaldehyde resin monomer, controlling the reaction temperature to be 65 ℃, and cooling after the reaction.
The mortar admixture as described above,
The preparation method of the water glass comprises the following steps:
Mixing sodium tetraborate with 60% sodium silicate by mass ratio of 2:17, and then vacuum filtering.
The use of a mortar admixture as described above,
The application method comprises the following steps:
Transferring the raw materials of the mortar additive into a stirrer for stirring and mixing, and pouring into a mould; curing the concrete in the mould.
The application of the mortar additive,
The specific operation of pouring into the mold is as follows:
The concrete was subjected to a leaving process in which the pressure of leaving was 8MPa, in which the temperature of leaving was 25 ℃, in which the humidity of leaving was 40%, and in which the time of leaving was 72 hours.
The application of the mortar additive,
The operation mode of curing is as follows:
removing the mould, transferring the mould into a curing chamber of a construction site, controlling the temperature of the curing chamber to be 25 ℃, and controlling the humidity of the curing chamber to be 80%; the curing period was 28d, wherein the spraying of water on the concrete surface was performed every 7 d.
Comparative example 1
The mortar additive comprises the following raw materials in parts by weight:
the mortar admixture as described above,
The preparation method of the modified polyacrylamide colloid comprises the following steps:
ethylene-vinyl acetate copolymer, acrylamide monomer, silicone oil, isopentenyl polyoxyethylene ether and dodecyl mercaptan are mixed according to the mass ratio of 50:60:80:100:30, mixing, transferring to a screw machine, and setting the discharging temperature to 60 ℃ to obtain the colloid.
The mortar admixture as described above,
The preparation method of the modified formaldehyde resin comprises the following steps:
Mixing octamethyl cyclotetrasiloxane, potassium hydrogen phthalate, glacial acetic acid and acetone to obtain a modifier, heating and mixing melamine and formaldehyde to obtain formaldehyde resin monomer, adding the modifier into the formaldehyde resin monomer, controlling the reaction temperature to be 65 ℃, and cooling after the reaction.
The mortar admixture as described above,
The preparation method of the water glass comprises the following steps:
Mixing sodium tetraborate with 60% sodium silicate by mass ratio of 2:17, and then vacuum filtering.
The use of a mortar admixture as described above,
The application method comprises the following steps:
Transferring the raw materials of the mortar additive into a stirrer for stirring and mixing, and pouring into a mould; curing the concrete in the mould.
The application of the mortar additive,
The specific operation of pouring into the mold is as follows:
The concrete was subjected to a leaving process in which the pressure of leaving was 8MPa, in which the temperature of leaving was 25 ℃, in which the humidity of leaving was 40%, and in which the time of leaving was 72 hours.
The application of the mortar additive,
The operation mode of curing is as follows:
removing the mould, transferring the mould into a curing chamber of a construction site, controlling the temperature of the curing chamber to be 25 ℃, and controlling the humidity of the curing chamber to be 80%; the curing period was 28d, wherein the spraying of water on the concrete surface was performed every 7 d.
Comparative example 2
The mortar additive comprises the following raw materials in parts by weight:
the mortar admixture as described above,
The preparation method of the modified calcium lignosulfonate comprises the following steps:
Polyvinyl alcohol, glycerol, 3-glycidol propyl methyl silane and tetramethyl ammonium hydroxide are mixed according to the mass ratio of 20:50:5:2, mixing, heating to 100 ℃, removing floating foam, pouring the foam onto calcium lignosulfonate, stirring and mixing uniformly, and naturally airing.
The mortar admixture as described above,
The preparation method of the modified formaldehyde resin comprises the following steps:
Mixing octamethyl cyclotetrasiloxane, potassium hydrogen phthalate, glacial acetic acid and acetone to obtain a modifier, heating and mixing melamine and formaldehyde to obtain formaldehyde resin monomer, adding the modifier into the formaldehyde resin monomer, controlling the reaction temperature to be 65 ℃, and cooling after the reaction.
The mortar admixture as described above,
The preparation method of the water glass comprises the following steps:
Mixing sodium tetraborate with 60% sodium silicate by mass ratio of 2:17, and then vacuum filtering.
The use of a mortar admixture as described above,
The application method comprises the following steps:
Transferring the raw materials of the mortar additive into a stirrer for stirring and mixing, and pouring into a mould; curing the concrete in the mould.
The application of the mortar additive,
The specific operation of pouring into the mold is as follows:
The concrete was subjected to a leaving process in which the pressure of leaving was 8MPa, in which the temperature of leaving was 25 ℃, in which the humidity of leaving was 40%, and in which the time of leaving was 72 hours.
The application of the mortar additive,
The operation mode of curing is as follows:
removing the mould, transferring the mould into a curing chamber of a construction site, controlling the temperature of the curing chamber to be 25 ℃, and controlling the humidity of the curing chamber to be 80%; the curing period was 28d, wherein the spraying of water on the concrete surface was performed every 7 d.
Comparative example 3
The mortar additive comprises the following raw materials in parts by weight:
the mortar admixture as described above,
The preparation method of the modified calcium lignosulfonate comprises the following steps:
Polyvinyl alcohol, glycerol, 3-glycidol propyl methyl silane and tetramethyl ammonium hydroxide are mixed according to the mass ratio of 20:50:5:2, mixing, heating to 100 ℃, removing floating foam, pouring the foam onto calcium lignosulfonate, stirring and mixing uniformly, and naturally airing.
The mortar admixture as described above,
The preparation method of the modified polyacrylamide colloid comprises the following steps:
ethylene-vinyl acetate copolymer, acrylamide monomer, silicone oil, isopentenyl polyoxyethylene ether and dodecyl mercaptan are mixed according to the mass ratio of 50:60:80:100:30, mixing, transferring to a screw machine, and setting the discharging temperature to 60 ℃ to obtain the colloid.
The mortar admixture as described above,
The preparation method of the water glass comprises the following steps:
Mixing sodium tetraborate with 60% sodium silicate by mass ratio of 2:17, and then vacuum filtering.
The use of a mortar admixture as described above,
The application method comprises the following steps:
Transferring the raw materials of the mortar additive into a stirrer for stirring and mixing, and pouring into a mould; curing the concrete in the mould.
The application of the mortar additive,
The specific operation of pouring into the mold is as follows:
The concrete was subjected to a leaving process in which the pressure of leaving was 8MPa, in which the temperature of leaving was 25 ℃, in which the humidity of leaving was 40%, and in which the time of leaving was 72 hours.
The application of the mortar additive,
The operation mode of curing is as follows:
removing the mould, transferring the mould into a curing chamber of a construction site, controlling the temperature of the curing chamber to be 25 ℃, and controlling the humidity of the curing chamber to be 80%; the curing period was 28d, wherein the spraying of water on the concrete surface was performed every 7 d.
Comparative example 4
The mortar additive comprises the following raw materials in parts by weight:
the mortar admixture as described above,
The preparation method of the modified calcium lignosulfonate comprises the following steps:
Polyvinyl alcohol, glycerol, 3-glycidol propyl methyl silane and tetramethyl ammonium hydroxide are mixed according to the mass ratio of 20:50:5:2, mixing, heating to 100 ℃, removing floating foam, pouring the foam onto calcium lignosulfonate, stirring and mixing uniformly, and naturally airing.
The mortar admixture as described above,
The preparation method of the modified polyacrylamide colloid comprises the following steps:
ethylene-vinyl acetate copolymer, acrylamide monomer, silicone oil, isopentenyl polyoxyethylene ether and dodecyl mercaptan are mixed according to the mass ratio of 50:60:80:100:30, mixing, transferring to a screw machine, and setting the discharging temperature to 60 ℃ to obtain the colloid.
The mortar admixture as described above,
The preparation method of the modified formaldehyde resin comprises the following steps:
Mixing octamethyl cyclotetrasiloxane, potassium hydrogen phthalate, glacial acetic acid and acetone to obtain a modifier, heating and mixing melamine and formaldehyde to obtain formaldehyde resin monomer, adding the modifier into the formaldehyde resin monomer, controlling the reaction temperature to be 65 ℃, and cooling after the reaction.
The mortar admixture as described above,
The preparation method of the water glass comprises the following steps:
Mixing sodium tetraborate with 60% sodium silicate by mass ratio of 2:17, and then vacuum filtering.
The use of a mortar admixture as described above,
The application method comprises the following steps:
Transferring the raw materials of the mortar additive into a stirrer for stirring and mixing, and pouring into a mould; curing the concrete in the mould.
The application of the mortar additive,
The specific operation of pouring into the mold is as follows:
The concrete was subjected to a leaving process in which the pressure of leaving was 8MPa, in which the temperature of leaving was 25 ℃, in which the humidity of leaving was 40%, and in which the time of leaving was 72 hours.
The application of the mortar additive,
The operation mode of curing is as follows:
removing the mould, transferring the mould into a curing chamber of a construction site, controlling the temperature of the curing chamber to be 25 ℃, and controlling the humidity of the curing chamber to be 80%; the curing period was 28d, wherein the spraying of water on the concrete surface was performed every 7 d.
Comparative example 5
The mortar additive comprises the following raw materials in parts by weight:
the mortar admixture as described above,
The preparation method of the modified calcium lignosulfonate comprises the following steps:
Polyvinyl alcohol, glycerol, 3-glycidol propyl methyl silane and tetramethyl ammonium hydroxide are mixed according to the mass ratio of 20:50:5:2, mixing, heating to 100 ℃, removing floating foam, pouring the foam onto calcium lignosulfonate, stirring and mixing uniformly, and naturally airing.
The mortar admixture as described above,
The preparation method of the modified polyacrylamide colloid comprises the following steps:
ethylene-vinyl acetate copolymer, acrylamide monomer, silicone oil, isopentenyl polyoxyethylene ether and dodecyl mercaptan are mixed according to the mass ratio of 50:60:80:100:30, mixing, transferring to a screw machine, and setting the discharging temperature to 60 ℃ to obtain the colloid.
The mortar admixture as described above,
The preparation method of the modified formaldehyde resin comprises the following steps:
Mixing octamethyl cyclotetrasiloxane, potassium hydrogen phthalate, glacial acetic acid and acetone to obtain a modifier, heating and mixing melamine and formaldehyde to obtain formaldehyde resin monomer, adding the modifier into the formaldehyde resin monomer, controlling the reaction temperature to be 65 ℃, and cooling after the reaction.
The use of a mortar admixture as described above,
The application method comprises the following steps:
Transferring the raw materials of the mortar additive into a stirrer for stirring and mixing, and pouring into a mould; curing the concrete in the mould.
The application of the mortar additive,
The specific operation of pouring into the mold is as follows:
The concrete was subjected to a leaving process in which the pressure of leaving was 8MPa, in which the temperature of leaving was 25 ℃, in which the humidity of leaving was 40%, and in which the time of leaving was 72 hours.
The application of the mortar additive,
The operation mode of curing is as follows:
removing the mould, transferring the mould into a curing chamber of a construction site, controlling the temperature of the curing chamber to be 25 ℃, and controlling the humidity of the curing chamber to be 80%; the curing period was 28d, wherein the spraying of water on the concrete surface was performed every 7 d.
Test case
The preparation test for the anti-floating anchor rod comprises the following steps:
the additives prepared in example 15 and comparative examples 1 to 5 were selected and tested for the following properties:
Testing was performed by entrusting university of hunan to identify detection center limited company, wherein the condition parameters of the testing are as follows:
(1) P.O 42.5 the mass ratio between cement and admixture is 80:3, a step of;
(2) The national standard method of reference: JGJ/T70-2009 building mortar basic performance test method.
As shown in Table 1, in the invention, after the admixture is mixed with P.O 42.5 cement in examples 1-5, the flexural strength, compressive strength, final setting time and other performance parameters are effectively improved; specifically, in comparative example 1, the modified calcium lignosulfonate was removed, and it was found that the compressive strength and flexural strength parameters were significantly reduced, and the final setting time/retention plasticity time was increased, and it was found that the interaction of polyvinyl alcohol and tetramethylammonium hydroxide functions to improve calcium lignosulfonate, and although the prior art also discloses the use of an admixture of modified polyacrylamide colloid, in comparative example 2, the modified polyacrylamide colloid required an ethylene-vinyl acetate copolymer in combination with isopentenyl polyoxyethylene ether, so that the friction force between cement raw material particles was reduced, and the curing effect of cement was promoted. In comparative example 3, the modified formaldehyde resin was removed from the retarder in the admixture, and the conventional admixture was rarely added with the above substances, which is required to consider that the hydration progress of cement would be affected in a usual case, and the rate of mortar crystallization was retarded. Comparative examples 4 and 5 were subjected to a water glass removal treatment, which, through years of empirical analysis, may be involved in the bleed air effect, whereas water glass may reduce the segregation reaction of the mortar and thus increase the strength. In addition, the modified calcium lignosulfonate can reduce the mixing water consumption of the concrete admixture under the condition of maintaining the slump of the concrete unchanged. Most of the anionic surfactants include lignosulfonate and naphthalene sulfonate formaldehyde polymers. After the concrete mixture is added, the cement particles are dispersed, so that the workability of the cement particles can be improved, the unit water consumption is reduced, the fluidity of the concrete mixture is improved, or the unit cement consumption is reduced, and the cement is saved. In addition, there is no better solution for the final setting time in the prior art, and substances such as modified formaldehyde resin exert a retarding effect by blocking the dissolution of cement clinker minerals.
Table 1 results of basic Performance test
The foregoing is a further elaboration of the present invention in connection with the detailed description, and it is not intended that the invention be limited to the specific embodiments shown, but rather that a number of simple deductions or substitutions be made by one of ordinary skill in the art without departing from the spirit of the invention, should be considered as falling within the scope of the invention as defined in the appended claims.
Claims (6)
1. A mortar admixture characterized in that:
The adhesive comprises the following raw materials in parts by weight:
10-30 parts of modified calcium lignosulfonate,
5-15 Parts of phosphogypsum,
1 To 3 parts of silicon carbide powder,
30-50 Parts of modified polyacrylamide colloid,
8-16 Parts of modified formaldehyde resin,
20-40 Parts of water glass,
14-20 Parts of methyl amyl alcohol;
The preparation method of the modified calcium lignosulfonate comprises the following steps:
Polyvinyl alcohol, glycerol, 3-glycidol propyl methyl silane and tetramethyl ammonium hydroxide are mixed according to the mass ratio of (20-30): (50-60): (5-8): (2-10), heating to 100-120 ℃, removing floating foam, pouring the foam onto calcium lignosulfonate, stirring and uniformly mixing, and naturally airing to obtain the calcium lignosulfonate;
The preparation method of the modified polyacrylamide colloid comprises the following steps:
ethylene-vinyl acetate copolymer, acrylamide monomer, silicone oil, isopentenyl polyoxyethylene ether and dodecyl mercaptan are mixed according to the mass ratio of (50-55): (60-70): (80-85): (100-120): (30-35) mixing, transferring into a screw machine, and setting the discharging temperature to be 60-65 ℃ to obtain colloid;
The preparation method of the modified formaldehyde resin comprises the following steps:
mixing octamethyl cyclotetrasiloxane, potassium hydrogen phthalate, glacial acetic acid and acetone to obtain a modifier, then heating and mixing melamine and formaldehyde to obtain formaldehyde resin monomer, adding the modifier into the formaldehyde resin monomer, controlling the reaction temperature to be 65-70 ℃, and cooling after the reaction;
The preparation method of the water glass comprises the following steps:
sodium tetraborate and sodium silicate with the mass concentration of 60% are mixed according to the mass ratio of (2-6): (17-20), and then vacuum filtering.
2. The mortar admixture according to claim 1, wherein:
The adhesive comprises the following raw materials in parts by weight:
15-30 parts of modified calcium lignosulfonate,
5-10 Parts of phosphogypsum,
1 To 3 parts of silicon carbide powder,
35-50 Parts of modified polyacrylamide colloid,
8-12 Parts of modified formaldehyde resin,
20-32 Parts of water glass,
14-20 Parts of methyl amyl alcohol.
3. The mortar admixture according to claim 2, wherein:
The adhesive comprises the following raw materials in parts by weight:
19 parts of modified calcium lignosulfonate,
8 Parts of phosphogypsum,
2 Parts of silicon carbide powder,
44 Parts of modified polyacrylamide colloid,
9 Parts of modified formaldehyde resin,
30 Parts of water glass, namely, a glass fiber,
18 Parts of methyl amyl alcohol.
4. Use of a mortar admixture according to claim 1, characterized in that:
the application method comprises the following steps:
Transferring the raw materials of the mortar additive into a stirrer for stirring and mixing, and pouring into a mould; curing the concrete in the mould.
5. The use of a mortar admixture according to claim 4, wherein:
the specific operation of pouring into the mold is as follows:
And (3) carrying out standing treatment on the concrete, wherein the standing pressure is 8-10 MPa, the standing temperature is 25 ℃, the standing humidity is 40-60%, and the standing time is 72h.
6. The use of a mortar admixture according to claim 4, wherein:
The operation mode of curing is as follows:
Removing the mould, transferring the mould into a curing chamber of a construction site, controlling the temperature of the curing chamber to be 25 ℃, and controlling the humidity of the curing chamber to be 80%; the curing period was 28d, wherein the spraying of water on the concrete surface was performed every 7 d.
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| CN103936326A (en) * | 2014-04-14 | 2014-07-23 | 淮安市建筑工程检测中心有限公司 | Admixture special for color concrete and application method and using method of admixture |
| CN108033708A (en) * | 2017-12-19 | 2018-05-15 | 萧县沃德化工科技有限公司 | A kind of efficient cement water reducing agent |
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| CN113831052B (en) * | 2021-11-25 | 2022-03-18 | 河北恒誉伟业建材有限公司 | Special additive for assembled mortar products |
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| CN108033708A (en) * | 2017-12-19 | 2018-05-15 | 萧县沃德化工科技有限公司 | A kind of efficient cement water reducing agent |
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