CN113800850A - Quick-drying high-strength thin-spraying material and preparation method thereof - Google Patents
Quick-drying high-strength thin-spraying material and preparation method thereof Download PDFInfo
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- CN113800850A CN113800850A CN202111076249.7A CN202111076249A CN113800850A CN 113800850 A CN113800850 A CN 113800850A CN 202111076249 A CN202111076249 A CN 202111076249A CN 113800850 A CN113800850 A CN 113800850A
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- 239000000463 material Substances 0.000 title claims abstract description 132
- 238000005507 spraying Methods 0.000 title claims abstract description 45
- 238000001035 drying Methods 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title abstract description 11
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims abstract description 72
- 239000004088 foaming agent Substances 0.000 claims abstract description 28
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 claims abstract description 19
- FALRKNHUBBKYCC-UHFFFAOYSA-N 2-(chloromethyl)pyridine-3-carbonitrile Chemical compound ClCC1=NC=CC=C1C#N FALRKNHUBBKYCC-UHFFFAOYSA-N 0.000 claims abstract description 18
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000002904 solvent Substances 0.000 claims abstract description 18
- 229940014800 succinic anhydride Drugs 0.000 claims abstract description 18
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 17
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims abstract description 14
- 239000003054 catalyst Substances 0.000 claims abstract description 12
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims abstract description 10
- 238000003756 stirring Methods 0.000 claims description 88
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 46
- 229910001868 water Inorganic materials 0.000 claims description 37
- 238000010438 heat treatment Methods 0.000 claims description 30
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 22
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 20
- 229940043237 diethanolamine Drugs 0.000 claims description 18
- 239000004568 cement Substances 0.000 claims description 14
- 239000007921 spray Substances 0.000 claims description 14
- 239000000654 additive Substances 0.000 claims description 11
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 11
- 239000004576 sand Substances 0.000 claims description 11
- 239000003381 stabilizer Substances 0.000 claims description 11
- BNGXYYYYKUGPPF-UHFFFAOYSA-M (3-methylphenyl)methyl-triphenylphosphanium;chloride Chemical compound [Cl-].CC1=CC=CC(C[P+](C=2C=CC=CC=2)(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1 BNGXYYYYKUGPPF-UHFFFAOYSA-M 0.000 claims description 10
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 10
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 10
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 10
- AMVQGJHFDJVOOB-UHFFFAOYSA-H aluminium sulfate octadecahydrate Chemical compound O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.[Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O AMVQGJHFDJVOOB-UHFFFAOYSA-H 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 10
- 238000004821 distillation Methods 0.000 claims description 10
- 229910052757 nitrogen Inorganic materials 0.000 claims description 10
- 229920005646 polycarboxylate Polymers 0.000 claims description 10
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims description 9
- 239000008213 purified water Substances 0.000 claims description 9
- 239000008030 superplasticizer Substances 0.000 claims description 9
- 230000000996 additive effect Effects 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 7
- -1 polypropylene Polymers 0.000 claims description 5
- 238000010992 reflux Methods 0.000 claims description 5
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Natural products CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 239000004743 Polypropylene Substances 0.000 claims description 2
- 239000011398 Portland cement Substances 0.000 claims description 2
- 239000000835 fiber Substances 0.000 claims description 2
- 239000003365 glass fiber Substances 0.000 claims description 2
- VANNPISTIUFMLH-UHFFFAOYSA-N glutaric anhydride Chemical compound O=C1CCCC(=O)O1 VANNPISTIUFMLH-UHFFFAOYSA-N 0.000 claims description 2
- GVALZJMUIHGIMD-UHFFFAOYSA-H magnesium phosphate Chemical compound [Mg+2].[Mg+2].[Mg+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O GVALZJMUIHGIMD-UHFFFAOYSA-H 0.000 claims description 2
- 239000004137 magnesium phosphate Substances 0.000 claims description 2
- 229960002261 magnesium phosphate Drugs 0.000 claims description 2
- 229910000157 magnesium phosphate Inorganic materials 0.000 claims description 2
- 235000010994 magnesium phosphates Nutrition 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- JOXIMZWYDAKGHI-UHFFFAOYSA-N p-toluenesulfonic acid Substances CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 claims description 2
- 125000005489 p-toluenesulfonic acid group Chemical group 0.000 claims description 2
- 229920001155 polypropylene Polymers 0.000 claims description 2
- 239000005060 rubber Substances 0.000 claims description 2
- QDWYPRSFEZRKDK-UHFFFAOYSA-M sodium;sulfamate Chemical group [Na+].NS([O-])(=O)=O QDWYPRSFEZRKDK-UHFFFAOYSA-M 0.000 claims description 2
- 125000003944 tolyl group Chemical group 0.000 claims description 2
- 239000004604 Blowing Agent Substances 0.000 claims 1
- 229910001653 ettringite Inorganic materials 0.000 abstract description 6
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 abstract description 3
- 239000000920 calcium hydroxide Substances 0.000 abstract description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 abstract description 3
- 230000015271 coagulation Effects 0.000 abstract description 3
- 238000005345 coagulation Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 14
- 239000011435 rock Substances 0.000 description 8
- 238000007792 addition Methods 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 230000005501 phase interface Effects 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000008139 complexing agent Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 125000001165 hydrophobic group Chemical group 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000011378 shotcrete Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012360 testing method Methods 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
- C04B28/02—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
- 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
- C04B28/34—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 cold phosphate binders
- C04B28/344—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 cold phosphate binders the phosphate binder being present in the starting composition solely as one or more phosphates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F291/00—Macromolecular compounds obtained by polymerising monomers on to macromolecular compounds according to more than one of the groups C08F251/00 - C08F289/00
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/68—Polyesters containing atoms other than carbon, hydrogen and oxygen
- C08G63/685—Polyesters containing atoms other than carbon, hydrogen and oxygen containing nitrogen
- C08G63/6854—Polyesters containing atoms other than carbon, hydrogen and oxygen containing nitrogen derived from polycarboxylic acids and polyhydroxy compounds
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/10—Accelerators; Activators
- C04B2103/12—Set accelerators
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/42—Pore formers
-
- 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
- C04B2111/00034—Physico-chemical characteristics of the mixtures
- C04B2111/00146—Sprayable or pumpable mixtures
- C04B2111/00155—Sprayable, i.e. concrete-like, materials able to be shaped by spraying instead of by casting, e.g. gunite
-
- 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
- C04B2111/00724—Uses not provided for elsewhere in C04B2111/00 in mining operations, e.g. for backfilling; in making tunnels or galleries
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/40—Mortars, concrete or artificial stone characterised by specific physical values for gas flow through the material
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a quick-drying high-strength thin-spraying material and a preparation method thereof, and relates to the technical field of thin-spraying materials, diethanolamine is added into a three-mouth bottle, succinic anhydride is added into a solvent N, N-dimethylacetamide and transferred into a constant-pressure dropping funnel, and is dripped into the three-mouth bottle to obtain an intermediate A, the intermediate A is added into the three-mouth bottle, a catalyst is added, a water-carrying agent is added, and glycerol is dripped into the three-mouth bottle to obtain a foaming agent, and the foaming agent is added to solve the problems of low compressive strength and low flexural strength of a spraying material; the generation of the ettringite can be mutually overlapped to form a compact space network structure, so that the effects of accelerating coagulation and improving early strength are achieved, the reduction of interfacial tension improves the solubility of calcium hydroxide, and the ettringite can react with aluminum hydroxide and aluminum sulfate components in a thin spraying material system to generate more ettringite, so that the aims of accelerating coagulation and early strength are achieved.
Description
Technical Field
The invention relates to the technical field of thin spraying materials, in particular to a fast-drying high-strength thin spraying material and a preparation method thereof.
Background
The weathering of the bare coal rock mass is mainly influenced by wind and water, the inherent water-gas balance inside the bare surrounding rock is broken by the weathering, when the underground air is moist and contains a large amount of water, the tunnel surrounding rock absorbs the water in the air, the rock mass absorbs the water and softens, the rock mass softens and disintegrates, the strength is reduced, when the underground air is dry, the flowing wind flow takes away the original water in the rock mass, the rock mass weathers and cracks, and the strength of the rock mass is reduced.
Traditional dry-type whitewashing technique, fortune material work load is big, and the auxiliary transport is difficult, and is with high costs, adopts thin spouting technique can reduce fortune material work load and cost when guaranteeing isolation and sealing performance, but current spraying material can't realize the rapid hardening, and resistance to compression and rupture strength are low.
Disclosure of Invention
In order to overcome the technical problems, the invention aims to provide a quick-drying high-strength thin-spraying material and a preparation method thereof, wherein the preparation method comprises the following steps:
(1) adding diethanolamine into a three-mouth bottle, adding succinic anhydride into a solvent N, N-dimethylacetamide, transferring into a constant-pressure dropping funnel, dropwise adding into the three-mouth bottle to obtain an intermediate A, adding the intermediate A into the three-mouth bottle, adding a catalyst, adding a water-carrying agent, and dropwise adding glycerol into the three-mouth bottle to obtain the foaming agent, wherein the foaming agent is added to solve the problem of low compressive strength and low flexural strength of a spraying material;
(2) pouring purified water into a three-mouth flask, pouring aluminum sulfate octadecahydrate into the three-mouth flask to obtain a material D, adding diethanolamine into the three-mouth flask containing the material D in a dropwise manner, adding aluminum sulfate and aluminum nitrate into the three-mouth flask to obtain a material E, adding acrylamide into the material E, dropwise adding triethanolamine to obtain a material G, adding acrylic acid, a polycarboxylate superplasticizer macromonomer and water into the three-mouth flask, adding ammonium persulfate to obtain a material H, uniformly mixing the material G with the material H to obtain the accelerator, and adding the accelerator to solve the problem that the existing spraying material cannot be rapidly hardened.
The purpose of the invention can be realized by the following technical scheme:
a quick-drying high-strength thin-spraying material comprises the following components in parts by weight:
20-30 parts of sand, 20-30 parts of professional cement, 20-30 parts of a specially-formulated additive, 1-10 parts of an accelerator, 1-10 parts of micro powder, 1-10 parts of a foaming agent, 1-5 parts of a stabilizer and 100 parts of water;
the fast-drying high-strength thin spray material is prepared by the following steps:
s1: adding the sand, the professional cement and the stabilizer into stirring equipment, and stirring for 5-10 min;
s2: adding additive and micropowder with special formula, stirring for 4-8min at rotation speed of 15-30 rpm, adding accelerator, and stirring for 1-2min at rotation speed of 35-45 rpm to obtain a material;
s3: and spraying the standby material at a required position by using a spraying pump, and curing to obtain the fast-drying high-strength thin spraying material.
As a further scheme of the invention: the special cement is ordinary portland cement or magnesium phosphate cement, the special formula additive is one or two or more of aeolian sand, polypropylene fiber, glass fiber and rubber powder which are mixed according to any proportion, and the stabilizer is sodium sulfamate.
As a further scheme of the invention: the foaming agent is prepared by the following preparation steps:
s31: adding diethanolamine into a three-mouth bottle, adding a solvent N, N-dimethylacetamide, introducing nitrogen, opening a magnetic stirrer, adding succinic anhydride into the solvent N, N-dimethylacetamide, completely dissolving the succinic anhydride, transferring the succinic anhydride into a constant-pressure dropping funnel, dropping into the three-mouth bottle, controlling the dropping speed to be 1-2 drops/s, reacting at room temperature for 6-8 hours, and carrying out reduced pressure distillation to obtain an intermediate A;
s32: adding the intermediate A into a three-mouth bottle, opening a magnetic stirrer, introducing nitrogen, adding a catalyst into the three-mouth bottle, adding a water-carrying agent, adding glycerol into a solvent N, N-dimethylacetamide to completely dissolve the glycerol, transferring the glycerol into a constant-pressure dropping funnel, dropping the glycerol into the three-mouth bottle at a dropping speed of 1-2 drops/s, simultaneously heating to 150-160 ℃, opening condensed water to reflux, keeping the temperature unchanged, reacting for 24-26h, and carrying out reduced pressure distillation to obtain the foaming agent.
As a further scheme of the invention: in step S31, the molar ratio of diethanolamine to glutaric anhydride is 1: 1.
As a further scheme of the invention: in the step S32, the catalyst is p-toluenesulfonic acid, the water-carrying agent is toluene, and the dosage ratio of the intermediate a, the catalyst, the water-carrying agent and glycerol is 18.1 g: 0.10 g: 36mL of: 0.92 g.
As a further scheme of the invention: the accelerator is prepared by the following steps:
s61: pouring purified water into a three-neck flask, gradually heating to 70-80 ℃ in a water bath kettle, pouring aluminum sulfate octadecahydrate into the three-neck flask, keeping the stirring state, and stirring for 20-30min to obtain a material D;
s62: adding diethanolamine into a three-neck flask containing the material D in a dropwise manner, controlling the dropwise adding speed to be 1-2 drops/s, keeping stirring for 30-40min, adding aluminum sulfate and aluminum nitrate into the three-neck flask, and stirring for 20-30min to obtain a material E;
s63: adding acrylamide into the material E, keeping the temperature at 70-90 ℃, stirring for 30-40min, dropwise adding triethanolamine, controlling the dropwise adding speed to be 1-2 drops/s, keeping the stirring state for 30-40min, stopping heating, and recovering the room temperature to obtain a material G;
s64: adding acrylic acid, a polycarboxylate superplasticizer macromonomer and water into a three-neck flask, heating in a water bath to 65-75 ℃, stirring for 30-40min, adding ammonium persulfate, stirring for 45-55min, adding aluminum hydroxide, stirring for 1-2H, stopping heating, and keeping a stirring state for natural cooling to obtain a material H;
s65: and (3) uniformly mixing the material G and the material H, keeping the temperature and stirring for 30-40min at 65-70 ℃, stopping heating, keeping stirring and cooling to room temperature to obtain the accelerator.
As a further scheme of the invention: the using amount ratio of the purified water to the aluminum sulfate octadecahydrate in the step S61 is 38 g: 49 g; in the step S62, the dosage ratio of the diethanol amine, the material D, the aluminum sulfate and the aluminum nitrate is 6 g: 77 g: 8 g: 2g of the total weight.
As a further scheme of the invention: in the step S63, the dosage ratio of the material E, the acrylamide and the triethanolamine is 81 g: 2 g: 6 g.
As a further scheme of the invention: in the step S64, the mass fraction of ammonium persulfate is 20%, and the use ratio of acrylic acid, polycarboxylate superplasticizer macromonomer, water, ammonium persulfate and aluminum hydroxide is 20 g: 100 g: 400 g: 1.0 g: 30G, wherein the dosage ratio of the material G to the material H in the step S65 is 19G: 1g of the total weight of the composition.
A preparation method of a quick-drying high-strength thin-spraying material is disclosed, and the quick-drying high-strength thin-spraying material is prepared by the following steps:
s1: adding the sand, the professional cement and the stabilizer into stirring equipment, and stirring for 5-10 min;
s2: adding additive and micropowder with special formula, stirring for 4-8min at rotation speed of 15-30 rpm, adding accelerator, and stirring for 1-2min at rotation speed of 35-45 rpm to obtain a material;
s3: and spraying the standby material at a required position by using a spraying pump, and curing to obtain the fast-drying high-strength thin spraying material.
The invention has the beneficial effects that:
the invention adds diethanolamine into a three-mouth bottle, adds succinic anhydride into solvent N, N-dimethylacetamide, transfers into a constant pressure dropping funnel, drops into the three-mouth bottle to obtain an intermediate A, adds the intermediate A into the three-mouth bottle, adds a catalyst, adds a water-carrying agent, drops glycerol into the three-mouth bottle to obtain the foaming agent, the interfacial activity of the foaming agent and the foaming effect of the foaming agent are complementary, the foaming agent is added into a thin spray material to greatly reduce the surface tension, when bubbles are generated, the generated bubbles enlarge the phase interface of two phases to increase the surface energy, positive adsorption can be formed at the boundary of the two phase interface after the foaming agent is added, hydrophilic groups face water, hydrophobic groups face air, molecules are arranged directionally, an adsorption layer is formed on the surface, and the intermolecular attraction force ensures that the foaming agent has good mechanical strength, the foaming agent molecules are regularly distributed on two sides of the formed molecular liquid film, and the like charges of the molecules generate repulsion, so that the bubbles are difficult to approach due to the repulsion, the bubbles have good stability, and the aim of improving the compressive strength and the breaking strength of the thin spray material is fulfilled;
pouring purified water into a three-neck flask, pouring aluminum sulfate octadecahydrate into the three-neck flask to obtain a material D, adding diethanolamine into the three-neck flask containing the material D in a dropwise manner, adding aluminum sulfate and aluminum nitrate into the three-neck flask to obtain a material E, adding acrylamide into the material E, dropwise adding triethanolamine to obtain a material G, adding acrylic acid, adding a polycarboxylate superplasticizer macromonomer and water into a three-neck flask, adding ammonium persulfate to obtain a material H, uniformly mixing the material G and the material H to obtain the accelerating agent, adding a large amount of aluminum ions introduced by aluminum sulfate octadecahydrate for hydrolysis to obtain aluminum hydroxide which can react with calcium hydroxide to generate ettringite, wherein the ettringite can be mutually overlapped to form a compact space network structure, so that the accelerating agent and the early strength are realized, the added aluminum nitrate is easily dissolved in water to provide aluminum ions, and the later strength loss caused by the introduction of excessive sulfate ions into the aluminum sulfate can be prevented;
the acrylic acid and the polycarboxylate water reducing agent macromonomer are added as organic acid complexing agents, so that the solubility of aluminum ions can be improved, the concentration of aluminum sulfate is further reduced, the crystallization instability of supersaturated aluminum sulfate solution is prevented, the initial fluidity of the thin spray material is improved, the uniformity of the structure is improved, the triethanolamine can enable the interfacial tension between the thin spray material and water to be reduced rapidly, the thin spray material is enabled to be contacted with the water more sufficiently, the thin spray material is enabled to be hydrated sufficiently, the hydration rate is accelerated, the solubility of calcium hydroxide is improved due to the reduction of the interfacial tension, and more ettringite can be generated by reacting with the aluminum hydroxide and the aluminum sulfate in a thin spray material system, so that the purposes of accelerating coagulation and early strength are achieved.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
the embodiment is a fast-drying high-strength thin-spraying material, which is prepared by the following steps:
s1: adding the sand, the professional cement and the stabilizer into stirring equipment, and stirring for 5 min;
s2: adding additives and micro powder with a special formula, keeping the rotating speed at 30 revolutions per minute, stirring for 8min, adding an accelerator, increasing the rotating speed to 45 revolutions per minute, and stirring for 2min to obtain a standby material;
s3: spraying the standby material at a required position by using a spraying pump, wherein the spraying thickness is 15mm, and 30kg of the standby material is used per square meter, and curing to obtain the quickly-dried high-strength thin spraying material;
wherein the foaming agent is prepared by the following preparation steps:
s31: adding diethanolamine into a three-mouth bottle, adding a solvent N, N-dimethylacetamide, introducing nitrogen, opening a magnetic stirrer, adding succinic anhydride into the solvent N, N-dimethylacetamide, completely dissolving the succinic anhydride, transferring the succinic anhydride into a constant-pressure dropping funnel, dropping into the three-mouth bottle, controlling the dropping speed to be 1 drop/s, reacting at room temperature for 6 hours, and carrying out reduced pressure distillation to obtain an intermediate A;
s32: adding the intermediate A into a three-mouth bottle, opening a magnetic stirrer, introducing nitrogen, adding a catalyst into the three-mouth bottle, adding a water-carrying agent, adding glycerol into a solvent N, N-dimethylacetamide to completely dissolve the glycerol, transferring the glycerol into a constant-pressure dropping funnel, dropping the glycerol into the three-mouth bottle, controlling the dropping speed to be 1 drop/s, simultaneously starting heating to 150 ℃, opening condensed water to reflux, keeping the temperature unchanged, reacting for 24 hours, and carrying out reduced pressure distillation to obtain the foaming agent;
the accelerator is prepared by the following steps:
s61: pouring purified water into a three-neck flask, gradually heating to 70 ℃ in a water bath kettle, pouring aluminum sulfate octadecahydrate into the three-neck flask, keeping the stirring state, and stirring for 20min to obtain a material D;
s62: adding diethanolamine into a three-neck flask containing the material D in a dropwise manner, controlling the dropwise adding speed to be 1 drop/s, keeping stirring for 30min, adding aluminum sulfate and aluminum nitrate into the three-neck flask, and stirring for 20min to obtain a material E;
s63: adding acrylamide into the material E, keeping the temperature at 70 ℃, stirring for 30min, dropwise adding triethanolamine, controlling the dropwise adding speed to be 1 drop/s, keeping the stirring state for 30min, stopping heating, and recovering the room temperature to obtain a material G;
s64: adding acrylic acid, a polycarboxylate superplasticizer macromonomer and water into a three-neck flask, heating in a water bath to 65 ℃, stirring for 30min, adding ammonium persulfate, stirring for 45min, adding aluminum hydroxide, stirring for 1H, stopping heating, and keeping the stirring state for natural cooling to obtain a material H;
s65: and (3) uniformly mixing the material G and the material H, keeping the temperature and stirring for 30min at 65 ℃, stopping heating, keeping stirring and cooling to room temperature to obtain the accelerator.
Example 2:
the embodiment is a fast-drying high-strength thin-spraying material, which is prepared by the following steps:
s1: adding the sand, the professional cement and the stabilizer into stirring equipment, and stirring for 8 min;
s2: adding additives and micro powder with a special formula, keeping the rotating speed at 30 revolutions per minute, stirring for 8min, adding an accelerator, increasing the rotating speed to 45 revolutions per minute, and stirring for 2min to obtain a standby material;
s3: spraying the standby material at a required position by using a spraying pump, wherein the spraying thickness is 20mm, and 42kg of the standby material is used per square meter, and curing to obtain the quickly-dried high-strength thin spraying material;
wherein the foaming agent is prepared by the following preparation steps:
s31: adding diethanolamine into a three-mouth bottle, adding a solvent N, N-dimethylacetamide, introducing nitrogen, opening a magnetic stirrer, adding succinic anhydride into the solvent N, N-dimethylacetamide, completely dissolving the succinic anhydride, transferring the succinic anhydride into a constant-pressure dropping funnel, dropping into the three-mouth bottle, controlling the dropping speed to be 2 drops/s, reacting at room temperature for 6 hours, and carrying out reduced pressure distillation to obtain an intermediate A;
s32: adding the intermediate A into a three-mouth bottle, opening a magnetic stirrer, introducing nitrogen, adding a catalyst into the three-mouth bottle, adding a water-carrying agent, adding glycerol into a solvent N, N-dimethylacetamide to completely dissolve the glycerol, transferring the glycerol into a constant-pressure dropping funnel, dropping the glycerol into the three-mouth bottle, controlling the dropping speed to be 1 drop/s, simultaneously starting heating to 150 ℃, opening condensed water to reflux, keeping the temperature unchanged, reacting for 24 hours, and carrying out reduced pressure distillation to obtain the foaming agent;
the accelerator is prepared by the following steps:
s61: pouring purified water into a three-neck flask, gradually heating to 80 ℃ in a water bath kettle, pouring aluminum sulfate octadecahydrate into the three-neck flask, keeping the stirring state, and stirring for 30min to obtain a material D;
s62: adding diethanolamine into a three-neck flask containing the material D in a dropwise manner, controlling the dropwise adding speed to be 2 drops/s, keeping stirring for 40min, adding aluminum sulfate and aluminum nitrate into the three-neck flask, and stirring for 30min to obtain a material E;
s63: adding acrylamide into the material E, keeping the temperature at 90 ℃, stirring for 40min, dropwise adding triethanolamine, controlling the dropwise adding speed to be 2 drops/s, keeping the stirring state for 40min, stopping heating, and recovering the room temperature to obtain a material G;
s64: adding acrylic acid, a polycarboxylate superplasticizer macromonomer and water into a three-neck flask, heating in a water bath to 75 ℃, stirring for 40min, adding ammonium persulfate, stirring for 55min, adding aluminum hydroxide, stirring for 2H, stopping heating, and keeping the stirring state for natural cooling to obtain a material H;
s65: and (3) uniformly mixing the material G and the material H, keeping the temperature and stirring for 40min at the temperature of 70 ℃, stopping heating, keeping stirring and cooling to room temperature to obtain the accelerator.
Example 3:
the embodiment is a fast-drying high-strength thin-spraying material, which is prepared by the following steps:
s1: adding the sand, the professional cement and the stabilizer into stirring equipment, and stirring for 10 min;
s2: adding additives and micro powder with a special formula, keeping the rotating speed at 30 revolutions per minute, stirring for 8min, adding an accelerator, increasing the rotating speed to 45 revolutions per minute, and stirring for 2min to obtain a standby material;
s3: spraying the standby material at a required position by using a spraying pump, wherein the spraying thickness is 20mm, and 42kg of the standby material is used per square meter, and curing to obtain the quickly-dried high-strength thin spraying material;
wherein the foaming agent is prepared by the following preparation steps:
s31: adding diethanolamine into a three-mouth bottle, adding a solvent N, N-dimethylacetamide, introducing nitrogen, opening a magnetic stirrer, adding succinic anhydride into the solvent N, N-dimethylacetamide, completely dissolving the succinic anhydride, transferring the succinic anhydride into a constant-pressure dropping funnel, dropping into the three-mouth bottle, controlling the dropping speed to be 2 drops/s, reacting at room temperature for 8 hours, and carrying out reduced pressure distillation to obtain an intermediate A;
s32: adding the intermediate A into a three-mouth bottle, opening a magnetic stirrer, introducing nitrogen, adding a catalyst into the three-mouth bottle, adding a water-carrying agent, adding glycerol into a solvent N, N-dimethylacetamide to completely dissolve the glycerol, transferring the glycerol into a constant-pressure dropping funnel, dropping into the three-mouth bottle, controlling the dropping speed to be 2 drops/s, simultaneously starting heating to 160 ℃, opening condensed water to reflux, keeping the temperature unchanged, reacting for 26 hours, and carrying out reduced pressure distillation to obtain the foaming agent;
the accelerator is prepared by the following steps:
s61: pouring purified water into a three-neck flask, gradually heating to 80 ℃ in a water bath kettle, pouring aluminum sulfate octadecahydrate into the three-neck flask, keeping the stirring state, and stirring for 30min to obtain a material D;
s62: adding diethanolamine into a three-neck flask containing the material D in a dropwise manner, controlling the dropwise adding speed to be 2 drops/s, keeping stirring for 40min, adding aluminum sulfate and aluminum nitrate into the three-neck flask, and stirring for 30min to obtain a material E;
s63: adding acrylamide into the material E, keeping the temperature at 90 ℃, stirring for 40min, dropwise adding triethanolamine, controlling the dropwise adding speed to be 2 drops/s, keeping the stirring state for 40min, stopping heating, and recovering the room temperature to obtain a material G;
s64: adding acrylic acid, a polycarboxylate superplasticizer macromonomer and water into a three-neck flask, heating in a water bath to 75 ℃, stirring for 40min, adding ammonium persulfate, stirring for 55min, adding aluminum hydroxide, stirring for 2H, stopping heating, and keeping the stirring state for natural cooling to obtain a material H;
s65: and (3) uniformly mixing the material G and the material H, keeping the temperature and stirring for 40min at the temperature of 70 ℃, stopping heating, keeping stirring and cooling to room temperature to obtain the accelerator.
Comparative example 1:
compared with the example 3, the comparative example does not add the foaming agent, and the rest steps are the same;
comparative example 2:
the comparative example uses an 8888 type accelerator instead of the accelerator, and the rest steps are the same;
the quick-drying high-strength thin-sprayed materials of examples 1 to 3 and comparative examples 1 to 2 were tested, the setting time and strength of the cement paste were measured according to the standard of "quick-setting admixture for sprayed concrete" (JC477-2005), and the strength of the blank set was tested according to the Cement mortar Strength test method (GB/T17671-1999);
the results are shown in the following table:
as can be seen from the above table, under the same test conditions, the initial setting time of the experimental example reached 31 to 35min, the initial setting time of the comparative example 1 without the addition of the foaming agent was 46min, the initial setting time of the comparative example 2 using the 8888 type quick-setting admixture in place of the quick-setting admixture was 70min, the compressive strength of the experimental example 1d reached 23 to 25MPa, the compressive strength after 1d of the comparative example 1 without the addition of the foaming agent was 10MPa, the compressive strength after 1d of the comparative example 2 using the 8888 type quick-setting admixture in place of the quick-setting admixture was 15MPa, the compressive strength of the experimental example 7d reached 34 to 38MPa, the compressive strength after 7d of the comparative example 1 without the addition of the foaming agent was 21MPa, the compressive strength after 7d of the comparative example 2 using the 8888 type quick-setting admixture in place of the quick-setting admixture was 26MPa, the compressive strength of the experimental example 28d reached 58 to 66MPa, and the compressive strength after 28d of the comparative example 1 without the addition of the foaming agent was 39MPa, the compressive strength of the comparative example 2 using the 8888 type accelerating agent instead of the accelerating agent is 48MPa after 28d, and the data of the experimental example are all superior to the comparative example, which shows that the addition of the accelerating agent and the foaming agent can obviously improve the setting speed and the compressive strength of the material.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is illustrative and explanatory only and is not intended to be exhaustive or to limit the invention to the precise embodiments described, and various modifications, additions, and substitutions may be made by those skilled in the art without departing from the scope of the invention or exceeding the scope of the claims.
Claims (10)
1. The fast-drying high-strength thin-spraying material is characterized by comprising the following components in parts by weight:
20-30 parts of sand, 20-30 parts of professional cement, 20-30 parts of a specially-formulated additive, 1-10 parts of an accelerator, 1-10 parts of micro powder, 1-10 parts of a foaming agent, 1-5 parts of a stabilizer and 100 parts of water and 200 parts of water;
the fast-drying high-strength thin spray material is prepared by the following steps:
s1: adding the sand, the professional cement and the stabilizer into stirring equipment, and stirring for 5-10 min;
s2: adding additive and micropowder with special formula, stirring for 4-8min at rotation speed of 15-30 rpm, adding accelerator, and stirring for 1-2min at rotation speed of 35-45 rpm to obtain a material;
s3: and spraying the standby material at a required position by using a spraying pump, and curing to obtain the fast-drying high-strength thin spraying material.
2. The quick-drying high-strength thin spray material as claimed in claim 1, wherein the professional cement is ordinary portland cement or magnesium phosphate cement, the specially-prepared additive is one or more of aeolian sand, polypropylene fiber, glass fiber and rubber powder which are mixed according to any proportion, and the stabilizer is sodium sulfamate.
3. The fast-drying, high-strength thin blown material of claim 1 wherein said blowing agent is prepared by the steps of:
s31: adding diethanolamine into a three-mouth bottle, adding a solvent N, N-dimethylacetamide, introducing nitrogen, opening a magnetic stirrer, adding succinic anhydride into the solvent N, N-dimethylacetamide, completely dissolving the succinic anhydride, transferring the succinic anhydride into a constant-pressure dropping funnel, dropping into the three-mouth bottle, controlling the dropping speed to be 1-2 drops/s, reacting at room temperature for 6-8 hours, and carrying out reduced pressure distillation to obtain an intermediate A;
s32: adding the intermediate A into a three-mouth bottle, opening a magnetic stirrer, introducing nitrogen, adding a catalyst into the three-mouth bottle, adding a water-carrying agent, adding glycerol into a solvent N, N-dimethylacetamide to completely dissolve the glycerol, transferring the glycerol into a constant-pressure dropping funnel, dropping the glycerol into the three-mouth bottle at a dropping speed of 1-2 drops/s, simultaneously heating to 150-160 ℃, opening condensed water to reflux, keeping the temperature unchanged, reacting for 24-26h, and carrying out reduced pressure distillation to obtain the foaming agent.
4. The fast drying, high strength and thin spraying material of claim 3, wherein the molar ratio of the diethanolamine to the glutaric anhydride in step S31 is 1: 1.
5. The fast-drying high-strength thin spray material of claim 3, wherein in step S32, the catalyst is p-toluenesulfonic acid, the water-carrying agent is toluene, and the dosage ratio of the intermediate A, the catalyst, the water-carrying agent and glycerol is 18.1 g: 0.10 g: 36mL of: 0.92 g.
6. The quick-drying high-strength thin spray material as claimed in claim 1, wherein the quick-setting admixture is prepared by the following steps:
s61: pouring purified water into a three-neck flask, gradually heating to 70-80 ℃ in a water bath kettle, pouring aluminum sulfate octadecahydrate into the three-neck flask, keeping the stirring state, and stirring for 20-30min to obtain a material D;
s62: adding diethanolamine into a three-neck flask containing the material D in a dropwise manner, controlling the dropwise adding speed to be 1-2 drops/s, keeping stirring for 30-40min, adding aluminum sulfate and aluminum nitrate into the three-neck flask, and stirring for 20-30min to obtain a material E;
s63: adding acrylamide into the material E, keeping the temperature at 70-90 ℃, stirring for 30-40min, dropwise adding triethanolamine, controlling the dropwise adding speed to be 1-2 drops/s, keeping the stirring state for 30-40min, stopping heating, and recovering the room temperature to obtain a material G;
s64: adding acrylic acid, a polycarboxylate superplasticizer macromonomer and water into a three-neck flask, heating in a water bath to 65-75 ℃, stirring for 30-40min, adding ammonium persulfate, stirring for 45-55min, adding aluminum hydroxide, stirring for 1-2H, stopping heating, and keeping a stirring state for natural cooling to obtain a material H;
s65: and (3) uniformly mixing the material G and the material H, keeping the temperature and stirring for 30-40min at 65-70 ℃, stopping heating, keeping stirring and cooling to room temperature to obtain the accelerator.
7. The fast-drying high-strength thin spray material as claimed in claim 6, wherein the ratio of the purified water to the aluminum sulfate octadecahydrate in step S61 is 38 g: 49 g; in the step S62, the dosage ratio of the diethanol amine, the material D, the aluminum sulfate and the aluminum nitrate is 6 g: 77 g: 8 g: 2g of the total weight.
8. The fast-drying high-strength thin spray material as claimed in claim 6, wherein the amount ratio of the material E, the acrylamide and the triethanolamine in step S63 is 81 g: 2 g: 6 g.
9. The fast-drying high-strength thin spraying material according to claim 6, wherein the mass fraction of the ammonium persulfate in the step S64 is 20%, and the use ratio of the acrylic acid, the polycarboxylate superplasticizer macromonomer, the water, the ammonium persulfate and the aluminum hydroxide is 20 g: 100 g: 400 g: 1.0 g: 30G, wherein the dosage ratio of the material G to the material H in the step S65 is 19G: 1g of the total weight of the composition.
10. The method for preparing a rapid-drying high-strength thin jet material as claimed in claim 1, wherein the rapid-drying high-strength thin jet material is prepared by the following steps:
s1: adding the sand, the professional cement and the stabilizer into stirring equipment, and stirring for 5-10 min;
s2: adding additive and micropowder with special formula, stirring for 4-8min at rotation speed of 15-30 rpm, adding accelerator, and stirring for 1-2min at rotation speed of 35-45 rpm to obtain a material;
s3: and spraying the standby material at a required position by using a spraying pump, and curing to obtain the fast-drying high-strength thin spraying material.
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