CN113264741B - 900 ℃ high-temperature-resistant C80 cement-based micro-expansion grouting material and preparation method and application thereof - Google Patents
900 ℃ high-temperature-resistant C80 cement-based micro-expansion grouting material and preparation method and application thereof Download PDFInfo
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- CN113264741B CN113264741B CN202110758718.7A CN202110758718A CN113264741B CN 113264741 B CN113264741 B CN 113264741B CN 202110758718 A CN202110758718 A CN 202110758718A CN 113264741 B CN113264741 B CN 113264741B
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- 239000000463 material Substances 0.000 title claims abstract description 87
- 239000004568 cement Substances 0.000 title claims abstract description 58
- 238000002360 preparation method Methods 0.000 title claims description 20
- 239000004576 sand Substances 0.000 claims abstract description 66
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 57
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 33
- 239000000843 powder Substances 0.000 claims abstract description 30
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 27
- 239000002253 acid Substances 0.000 claims abstract description 26
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 14
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 14
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims abstract description 14
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000004115 Sodium Silicate Substances 0.000 claims abstract description 13
- 239000004033 plastic Substances 0.000 claims abstract description 13
- 235000019795 sodium metasilicate Nutrition 0.000 claims abstract description 13
- 229910052911 sodium silicate Inorganic materials 0.000 claims abstract description 13
- 229920002748 Basalt fiber Polymers 0.000 claims abstract description 11
- 229910021538 borax Inorganic materials 0.000 claims abstract 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 abstract description 11
- 235000010339 sodium tetraborate Nutrition 0.000 claims abstract description 11
- 239000004328 sodium tetraborate Substances 0.000 claims abstract description 11
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 10
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 10
- 239000004816 latex Substances 0.000 claims abstract description 10
- 229920000126 latex Polymers 0.000 claims abstract description 10
- 229920000570 polyether Polymers 0.000 claims abstract description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 88
- 238000001035 drying Methods 0.000 claims description 50
- 239000000243 solution Substances 0.000 claims description 31
- 230000007246 mechanism Effects 0.000 claims description 25
- XXROGKLTLUQVRX-UHFFFAOYSA-N allyl alcohol Chemical compound OCC=C XXROGKLTLUQVRX-UHFFFAOYSA-N 0.000 claims description 18
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 17
- 239000002245 particle Substances 0.000 claims description 13
- 238000003756 stirring Methods 0.000 claims description 12
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 claims description 10
- 229910021418 black silicon Inorganic materials 0.000 claims description 10
- 239000000377 silicon dioxide Substances 0.000 claims description 10
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 9
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 9
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 9
- 238000005507 spraying Methods 0.000 claims description 9
- 239000008367 deionised water Substances 0.000 claims description 8
- 229910021641 deionized water Inorganic materials 0.000 claims description 8
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 8
- 235000011152 sodium sulphate Nutrition 0.000 claims description 8
- AEUVIXACNOXTBX-UHFFFAOYSA-N 1-sulfanylpropan-1-ol Chemical compound CCC(O)S AEUVIXACNOXTBX-UHFFFAOYSA-N 0.000 claims description 7
- 239000011398 Portland cement Substances 0.000 claims description 7
- 239000012452 mother liquor Substances 0.000 claims description 7
- 239000003999 initiator Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 5
- ZZZCUOFIHGPKAK-UHFFFAOYSA-N D-erythro-ascorbic acid Natural products OCC1OC(=O)C(O)=C1O ZZZCUOFIHGPKAK-UHFFFAOYSA-N 0.000 claims description 5
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 claims description 5
- 229930003268 Vitamin C Natural products 0.000 claims description 5
- 238000010521 absorption reaction Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 125000005395 methacrylic acid group Chemical group 0.000 claims description 5
- 239000011259 mixed solution Substances 0.000 claims description 5
- 239000004575 stone Substances 0.000 claims description 5
- 235000002906 tartaric acid Nutrition 0.000 claims description 5
- 239000011975 tartaric acid Substances 0.000 claims description 5
- 235000019154 vitamin C Nutrition 0.000 claims description 5
- 239000011718 vitamin C Substances 0.000 claims description 5
- 229920006395 saturated elastomer Polymers 0.000 claims description 4
- BDAGIHXWWSANSR-UHFFFAOYSA-M Formate Chemical compound [O-]C=O BDAGIHXWWSANSR-UHFFFAOYSA-M 0.000 claims description 3
- 239000004280 Sodium formate Substances 0.000 claims description 3
- 235000019254 sodium formate Nutrition 0.000 claims description 3
- 238000009435 building construction Methods 0.000 claims description 2
- 229910010271 silicon carbide Inorganic materials 0.000 abstract description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 2
- 239000011863 silicon-based powder Substances 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 description 20
- 238000005303 weighing Methods 0.000 description 10
- 239000003245 coal Substances 0.000 description 8
- 239000010413 mother solution Substances 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- 238000005336 cracking Methods 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 230000004069 differentiation Effects 0.000 description 4
- 239000012856 weighed raw material Substances 0.000 description 4
- 239000006004 Quartz sand Substances 0.000 description 3
- 150000004645 aluminates Chemical class 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 230000000977 initiatory effect Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000002572 peristaltic effect Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000000740 bleeding effect Effects 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 2
- 239000000292 calcium oxide Substances 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 238000003889 chemical engineering Methods 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 238000005272 metallurgy Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229920005646 polycarboxylate Polymers 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000008030 superplasticizer Substances 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- RBTBFTRPCNLSDE-UHFFFAOYSA-N 3,7-bis(dimethylamino)phenothiazin-5-ium Chemical compound C1=CC(N(C)C)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 RBTBFTRPCNLSDE-UHFFFAOYSA-N 0.000 description 1
- DKIDEFUBRARXTE-UHFFFAOYSA-N 3-mercaptopropanoic acid Chemical compound OC(=O)CCS DKIDEFUBRARXTE-UHFFFAOYSA-N 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910000272 alkali metal oxide Inorganic materials 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000030279 gene silencing Effects 0.000 description 1
- 239000008233 hard water Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 206010022000 influenza Diseases 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000002687 intercalation Effects 0.000 description 1
- 238000009830 intercalation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 229910001425 magnesium ion Inorganic materials 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 229960000907 methylthioninium chloride Drugs 0.000 description 1
- 239000010446 mirabilite Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229910052901 montmorillonite Inorganic materials 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000003469 silicate cement Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000007704 transition Effects 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
- C04B12/00—Cements not provided for in groups C04B7/00 - C04B11/00
- C04B12/04—Alkali metal or ammonium silicate cements ; Alkyl silicate cements; Silica sol cements; Soluble silicate 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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/06—Quartz; Sand
-
- 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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/32—Carbides; Nitrides; Borides ; Silicides
- C04B14/322—Carbides
- C04B14/324—Silicon carbide
-
- 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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/38—Fibrous materials; Whiskers
- C04B14/46—Rock wool ; Ceramic or silicate fibres
- C04B14/4643—Silicates other than zircon
-
- 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
- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
- C04B22/06—Oxides, Hydroxides
- C04B22/066—Magnesia; Magnesium hydroxide
-
- 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
- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
- C04B22/08—Acids or salts thereof
-
- 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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/70—Grouts, e.g. injection mixtures for cables for prestressed concrete
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Civil Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to a 900 ℃ high-temperature-resistant C80 cement-based micro-expansion grouting material, which comprises the following components in parts by weight: 120 portions of cement 105-plus-material, 6-12 portions of silicon powder, 78-107 portions of machine-made sand, 20-30 portions of silicon carbide with the grain diameter of 0.15-10.0mm, 0.5-1 portion of redispersible latex powder, 0.04-0.06 portion of basalt fiber, 2-3 portions of sodium tetraborate, 4-6 portions of powdery anhydrous sodium metasilicate, 2-3 portions of magnesium oxide expanding agent, 1-1.5 portions of early strength admixture, 0.7-1.1 portions of powdery polycarboxylic acid water reducing agent, 0.1-0.2 portion of polyether defoaming agent and 0.005-0.015 portion of plastic expanding agent. The components are weighed according to a proportion, and then added with a certain weight part of water to be stirred and uniformly mixed, so as to obtain the high-temperature-resistant cement-based micro-expansion grouting material.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to a 900 ℃ high-temperature resistant C80 cement-based micro-expansion grouting material, and a preparation method and application thereof.
Background
The grouting material is a cement-based engineering material with certain fluidity and micro-expansibility, and is mainly used in the projects of secondary grouting of equipment foundations, anchoring of foundation bolts, reinforcing of concrete, repairing and the like. The fine aggregate of the traditional grouting material mostly adopts quartz sand, river sand and the like, for example, the invention patent of CN202011086036.8 discloses a self-infiltration grouting material for semi-flexible pavement and a preparation method thereof, wherein the quartz sand is adopted as the fine aggregate, the sand is expensive and faces the problem of resource exhaustion, the cost for preparing the grouting material is increasingly higher, and the existing grouting material prepared by using common silicate cement is easy to crack, break and differentiate and has poor high temperature resistance when being applied to the parts of a converter track of a steel mill, a kiln track and various high temperature environments, such as primary and secondary chemical engineering, metallurgy strengthening grouting, heat-resistant ground of a special workshop, a smoke exhaust channel of an aircraft engine maintenance workshop, a sound-absorbing cylinder of a missile launching well, and the like, and the important industrial fields of coal unloading ditch, coal hopper, coal storage bin, dry coal grate, tipper, dragger, water treatment and high temperature resistance in the power generation industry.
Disclosure of Invention
The invention aims to provide a 900 ℃ high-temperature-resistant C80 cement-based micro-expansion grouting material, and a preparation method and application thereof, and aims to solve the problems that the existing grouting material is high in production cost, poor in strength and easy to crack, break and differentiate at high temperature.
The technical scheme adopted by the invention to solve the technical problems is as follows:
the 900 ℃ high-temperature-resistant C80 cement-based micro-expansion grouting material comprises the following components in parts by weight: 120 parts of cement 105-containing material, 6-12 parts of silica powder, 78-107 parts of machine-made sand, 20-30 parts of black silicon carbide with the particle size of 0.15-10.0mm, 0.5-1 part of redispersible latex powder, 0.04-0.06 part of basalt fiber, 2-3 parts of sodium tetraborate, 4-6 parts of powdery anhydrous sodium metasilicate, 2-3 parts of magnesium oxide expanding agent, 1-1.5 parts of early strength agent, 0.7-1.1 part of powdery polycarboxylic acid high-performance water reducing agent, 0.1-0.2 part of powdery polyether defoaming agent and 0.005-0.015 part of plastic expanding agent.
Further, the machine-made sand comprises 10-15 parts of drying machine-made pure mountain sand with the grain diameter of 0.15-1.0mm, 30-45 parts of drying machine-made pure mountain sand with the grain diameter of 1.0-2.0mm, 35-42 parts of drying machine-made pure mountain sand with the grain diameter of 2.0-4.0mm, 2-3 parts of drying machine-made pure mountain sand with the grain diameter of 4.0-5.0mm and 2-3 parts of drying aggregate with the grain diameter of 5.0-10.0 mm.
Furthermore, the MB value of the machine-made sand is less than or equal to 1.4, the crushing value is less than or equal to 16%, the saturated surface dry water absorption rate is less than or equal to 2.2%, and the stone powder content is less than or equal to 5%.
Further, the cement is ordinary portland cement.
Further, the early strength agent is anhydrous sodium sulphate or formate early strength agent.
Further, the polycarboxylate superplasticizer is prepared by the following method:
(1) dissolving acrylic acid and methacrylic tartaric acid monoester in deionized water to prepare solution A, and dissolving vitamin C and mercaptopropanol in water to prepare solution B;
(2) under stirring, firstly adding H into the mixed solution of the allyl alcohol polyoxyethylene ether and the maleic anhydride which are heated to 60-70 DEG C 2 O 2 Uniformly dripping the solution A and the solution B prepared in the step (1) with an initiator, and preserving the heat for 4 hours to obtain intermediate mother liquor;
(3) and (3) cooling the intermediate mother liquor to 30-40 ℃, adjusting the pH value to 7, and drying and spraying powder to obtain the powdery polycarboxylic acid high-performance water reducing agent.
Further, the dropping speed of the solution A is 1mL/min, and the dropping speed of the solution B is 0.8 mL/min.
Further, the MB value of the machine-made sand is less than or equal to 1.8 in an MB value range of 1.4, the crushing value is less than or equal to 16%, the saturated surface dry water absorption rate is less than or equal to 2.2%, and the content of the stone powder is less than or equal to 5%.
A preparation method of a 900 ℃ high-temperature-resistant C80 cement-based micro-expansion grouting material comprises the steps of weighing the components in proportion, adding water accounting for 13% of the weight of all the raw material components, and uniformly stirring to obtain the cement-based micro-expansion grouting material.
The 900 ℃ high-temperature-resistant C80 cement-based micro-expansion grouting material is applied to building construction.
The invention has the beneficial effects that:
1. the fine aggregate adopts the machine-made sand as the raw material, particularly, the machine-made sand adopts the pure mountain sand of red tuff machine-made from Jinhua in Zhejiang specially, compared with river sand or quartz sand, the production cost of the grouting material is greatly reduced, the cost performance of the grouting material is high, the machine-made sand is prepared by adopting four grading intervals, the blending utilization rate of the machine-made sand is improved, the uniformly distributed aggregate after blending is improved, the prepared grouting material is not easy to float on the surface and separate due to bleeding, the grouting material is full and has good fluidity and easy grouting.
2. Compared with the existing expanding agent which mostly adopts calcium oxide or calcium sulphoaluminate, the magnesium oxide expanding agent adopts the magnesium oxide expanding agent, the crystal nucleus of the magnesium oxide is about 200 nanometers, the crystal nucleus of the calcium oxide is about 10 micrometers, and the crystal nucleus is reduced by about 50 times, so that the magnesium oxide expanding agent and the plastic expanding agent react slowly and uniformly under the synergistic action, the crack resistance of the grouting material is improved, micro expansion can be generated at the plastic stage of the grouting material to compensate the contraction at the plastic stage, the vertical expansion rate of 3 hours can reach 3.0%, the compactness and the filling property of the grouting material are enhanced, the phenomena of cracking, crushing, scattering, differentiation and the like of the grouting material at high temperature are avoided, and the high temperature resistance and the strength requirements of the grouting material are improved.
3. The invention adopts the synergistic effect of the sodium tetraborate, the powdery anhydrous sodium metasilicate, the basalt fiber and the machine-made sand, improves the compactness of the grouting material, has zero bleeding rate under the pressure of 0.36MPa, no slump loss in 2 hours, high early strength and high strength, the 1d strength after pouring can reach more than 30MPa, the final strength can reach more than 80MPa, the ratio of the compressive strength of a test piece soaking end subjected to thermal shock for 20 times to the compressive strength of a test piece subjected to standard maintenance for 28 hours is 98%, and the compressive strength after firing at 900 ℃ for 3 hours can reach more than 82MPa, further avoids the phenomena of cracking, crushing, scattering, differentiation and the like of the grouting material under high temperature, and improves the high temperature resistance of the grouting material again due to the addition of boron element.
4. The black silicon carbide adopted by the invention can effectively increase the rigidity of the aggregate, improve the strength of the grouting material and improve the high-temperature resistance of the grouting material, the industrial silicon carbide is brown to black due to the impurities such as iron, and the rainbow-like luster on the crystal is caused by a silicon dioxide passivation layer generated on the surface of the industrial silicon carbide. Silicon carbide does not melt at any known temperature, sublimes at 2700 c, and is also highly inert chemically. Coefficient of thermal expansion of silicon carbide (4.0X 10) -6 /K) are very low, while no discontinuous thermal expansion occurs which might be causedAnd (5) phase transition. The anhydrous sodium metasilicate has uniform particles, large specific surface area and high oil absorption value, is favorable for removing oil stains, has the total content of anhydrous sodium metasilicate total alkali and silicon dioxide of more than or equal to 94 percent, improves the binding capacity to Ca and Mg ions compared with hydrated sodium metasilicate, promotes hard water softening, and adjusts and stabilizes the pH value.
5. The powdery S11-F polycarboxylic acid high-performance water reducing agent is prepared from a slump retaining mother solution which is independently developed, the water reducing agent is prepared by adopting hydrogen peroxide as an initiator and maleic anhydride and allyl alcohol polyoxyethylene ether as monomers, performing polymerization reaction under a certain process, drying and spraying powder, and is relatively common polycarboxylic acid water reducing agent, the water reducing rate can reach 40 percent, a cross-linking structure and a certain branched chain structure among molecular chains are formed through polymerization reaction, the structural form of the molecular chains is more rigid, the molecular chains are not easy to be absorbed in the intercalation of montmorillonite, the obtained grouting material is not easy to bleed, the loss of fluidity is small, and the prepared grouting material is soft like satin, the strength is not reduced, the prepared grouting material has excellent fluidity retention performance and filling degree under 2 hours, the phenomena of cracking, crushing, scattering, differentiation and the like of the grouting material at high temperature are further avoided, and the high temperature resistance of the grouting material is improved.
6. The powdery S11-F polycarboxylate superplasticizer is prepared from a self-developed slump-retaining mother solution, mercaptopropanol is added in the preparation process to replace mercaptopropionic acid commonly used in the existing preparation process, and the mercaptopropanol is low in price, free of odor and not easy to crystallize in winter in the north.
7. The powdery S11-F polycarboxylic acid series high-performance water reducing agent is an autonomously developed powdery S11-F polycarboxylic acid series high-performance water reducing agent, has small enough fluidity loss, widens the use range of machine-made sand, enables the III type machine-made sand with the MB value less than or equal to 1.8 and the stone powder content less than or equal to 5.0 percent to be adopted when preparing grouting material, and the prepared grouting material meets the harsh fluidity requirement of a construction site and still has excellent high temperature resistance when used at high temperature after being maintained.
8. The cement of the invention is common Portland cement with low price and wide material selection, but not aluminate refractory cement with high cost, and the prepared grouting material not only meets the requirement of high temperature resistance, but also reaches the high strength of C80, and has excellent cost performance.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The specific embodiment of the invention provides a 900 ℃ high-temperature-resistant C80 cement-based micro-expansion grouting material, and a preparation method and application thereof. The 900 ℃ high-temperature-resistant C80 cement-based micro-expansion grouting material comprises the following components in parts by weight: 120 portions of 105-12 portions of cement, 6-12 portions of silicon powder, 78-107 portions of machine-made sand, 4-6 portions of black silicon carbide with the grain diameter of 0.15-10.0mm, 0.5-1 portion of redispersible latex powder, 0.04-0.06 portion of basalt fiber, 2-3 portions of sodium tetraborate, 4-6 portions of powdery anhydrous sodium metasilicate, 2-3 portions of magnesium oxide expanding agent, 1-1.5 portions of early strength admixture, 0.7-1.1 portions of powdery polycarboxylic acid high-performance water reducing agent, 0.1-0.2 portions of powdery polyether defoaming agent and 0.005-0.015 portion of plastic expanding agent.
Specifically, the machine-made sand comprises 10-15 parts of drying machine-made pure mountain sand with the particle size of 0.15-1.0mm, 30-45 parts of drying machine-made pure mountain sand with the particle size of 1.0-2.0mm, 35-42 parts of drying machine-made pure mountain sand with the particle size of 2.0-4.0mm, 2-3 parts of drying machine-made pure mountain sand with the particle size of 4.0-5.0mm and 2-3 parts of drying aggregate with the particle size of 5.0-10.0 mm.
Specifically, the MB value (methylene blue value, which represents the content of mud powder in the machine-made sand) of the machine-made sand is less than or equal to 1.6, the crushing value is less than or equal to 16%, the saturated surface dry water absorption is less than or equal to 2.2%, and the stone powder content is less than or equal to 5%.
The cement is ordinary portland cement, ordinary portland cement No. 42.5 cement and/or ordinary portland cement No. 52.5 cement can be used, in addition, the high-temperature resistance of the whole grouting material can be improved by using aluminate refractory cement, but the manufacturing cost of the ordinary portland cement used in the invention is lower compared with the use of aluminate refractory cement.
The early strength agent is anhydrous sodium sulphate or formate early strength agent.
The properties of the respective raw material components defined in the present invention as described above can be applied to the following examples.
Example 1:
the 900 ℃ high-temperature-resistant C80 cement-based micro-expansion grouting material comprises the following components in parts by weight: 105 parts of cement, 12 parts of silica powder, 15 parts of drying mechanism pure hill sand with the grain diameter of 0.15-1.0mm, 30 parts of drying mechanism pure hill sand with the grain diameter of 1.0-2.0mm, 40 parts of drying mechanism pure hill sand with the grain diameter of 2.0-4.0mm, 3 parts of drying mechanism pure hill sand with the grain diameter of 4.0-5.0mm, 3 parts of drying aggregate with the grain diameter of 5.0-10.0mm, 28 parts of black silicon carbide with the grain diameter of 0.15-10.0mm, 1 part of redispersible latex powder, 0.06 part of basalt fiber, 3 parts of sodium tetraborate, 5 parts of powdery sodium metasilicate, 3 parts of magnesium oxide expanding agent, 1.5 parts of anhydrous sodium sulphate, 1.1 part of powdery polycarboxylic acid high-performance water reducing agent, 0.2 part of powdery polyether defoaming agent and 0.015 part of plastic expanding agent.
A preparation method of a 900 ℃ high-temperature-resistant C80 cement-based micro-expansion grouting material comprises the steps of weighing and metering all raw material components of the grouting material according to a ratio, adding water accounting for 13% of the weight of all the raw material components into all the raw material components after weighing, putting the raw material components into a stirrer, and stirring to obtain the cement-based micro-expansion grouting material A, wherein the weight of the added water accounts for 13% of the weight of all the raw material components after weighing.
Example 2:
the 900 ℃ high-temperature-resistant C80 cement-based micro-expansion grouting material comprises the following components in parts by weight: 118 parts of cement, 6 parts of silica powder, 13 parts of drying mechanism pure hill sand with the grain diameter of 0.15-1.0mm, 36.5 parts of drying mechanism pure hill sand with the grain diameter of 1.0-2.0mm, 42 parts of drying mechanism pure hill sand with the grain diameter of 2.0-4.0mm, 2 parts of drying mechanism pure hill sand with the grain diameter of 4.0-5.0mm, 3 parts of drying aggregate with the grain diameter of 5.0-10.0mm, 20 parts of black silicon carbide with the grain diameter of 0.15-10.0mm, 0.5 part of redispersible latex powder, 0.04 part of basalt fiber, 2 parts of sodium tetraborate, 4 parts of powdery sodium metasilicate, 2 parts of magnesium oxide expanding agent, 1 part of anhydrous sodium sulphate, 0.7 part of powdery polycarboxylic acid high-performance water reducing agent, 0.1 part of powdery polyether defoaming agent and 0.005 part of plastic expanding agent.
A preparation method of a 900 ℃ high-temperature-resistant C80 cement-based micro-expansion grouting material comprises the steps of weighing and metering all raw material components of the grouting material according to a ratio, adding water accounting for 13% of the weight of all the raw material components into all the raw material components after weighing, putting the mixture into a stirrer, and stirring to obtain a cement-based micro-expansion grouting material B.
Example 3:
the 900 ℃ high-temperature-resistant C80 cement-based micro-expansion grouting material comprises the following components in parts by weight: 110 parts of cement, 8 parts of silica powder, 10 parts of drying mechanism pure hill sand with the grain diameter of 0.15-1.0mm, 42 parts of drying mechanism pure hill sand with the grain diameter of 1.0-2.0mm, 36 parts of drying mechanism pure hill sand with the grain diameter of 2.0-4.0mm, 2 parts of drying mechanism pure hill sand with the grain diameter of 4.0-5.0mm, 2 parts of drying aggregate with the grain diameter of 5.0-10.0mm, 25 parts of black silicon carbide with the grain diameter of 0.15-10.0mm, 0.75 part of redispersible latex powder, 0.05 part of basalt fiber, 2.5 parts of sodium tetraborate, 6 parts of powdery sodium metasilicate anhydrous, 2.5 parts of magnesium oxide expanding agent, 1.25 parts of glauber salt, 0.9 part of powdery polycarboxylic acid high-performance water reducing agent, 0.7 part of powdery polyether defoaming agent and 0.0055 part of plastic expanding agent.
A preparation method of a 900 ℃ high-temperature-resistant C80 cement-based micro-expansion grouting material comprises the steps of weighing and metering all raw material components of the grouting material according to a ratio, adding water accounting for 13% of the weight of all the raw material components into all the weighed raw material components, and stirring in a stirrer to obtain the cement-based micro-expansion grouting material C.
Example 4:
the 900 ℃ high-temperature-resistant C80 cement-based micro-expansion grouting material comprises the following components in parts by weight: 105 parts of cement, 12 parts of silica powder, 15 parts of drying mechanism pure hill sand with the grain diameter of 0.15-1.0mm, 30 parts of drying mechanism pure hill sand with the grain diameter of 1.0-2.0mm, 40 parts of drying mechanism pure hill sand with the grain diameter of 2.0-4.0mm, 3 parts of drying mechanism pure hill sand with the grain diameter of 4.0-5.0mm, 3 parts of drying aggregate with the grain diameter of 5.0-10.0mm, 28 parts of black silicon carbide with the grain diameter of 0.15-10.0mm, 1 part of redispersible latex powder, 0.06 part of basalt fiber, 3 parts of sodium tetraborate, 5 parts of powdery sodium metasilicate, 3 parts of magnesium oxide expanding agent, 1.5 parts of anhydrous sodium sulphate, 1.1 part of powdery polycarboxylic acid high-performance water reducing agent, 0.2 part of powdery polyether defoaming agent and 0.015 part of plastic expanding agent, the powdery polycarboxylic acid high-performance water reducing agent is prepared by spraying an S11-F polycarboxylic acid high-performance water reducing agent which is independently developed, and is prepared by the following method:
(1) dissolving 15g of acrylic acid and 200g of methacrylic tartaric acid monoester in deionized water to prepare solution A, and dissolving 0.5g of vitamin C and 0.39g of mercaptopropanol in water to prepare solution B;
(2) putting 100g of allyl alcohol polyoxyethylene ether, 17g of maleic anhydride and 100g of deionized water into a four-neck flask, putting the four-neck flask into an oil bath pot, heating to 60-70 ℃, firstly adding 3.8g of 27.5% H into a mixed solution of the allyl alcohol polyoxyethylene ether and the maleic anhydride which are heated to 60-70 ℃ under stirring 2 O 2 Initiating an initiator, and then starting to uniformly dropwise add the solution A and the solution B into the four-neck flask by using a peristaltic pump, wherein the dropwise adding speed of the solution A is 1mL/min, the dropwise adding speed of the solution B is 0.8mL/min, and after the dropwise adding is finished, keeping the temperature for 4 hours to obtain an intermediate mother solution;
(3) and (3) cooling the intermediate mother liquor to 30-40 ℃, adjusting the pH value to 7, and drying and spraying powder to obtain the polycarboxylic acid water reducer.
A preparation method of a 900 ℃ high-temperature-resistant C80 cement-based micro-expansion grouting material comprises the steps of weighing and metering all raw material components of the grouting material according to a ratio, adding water accounting for 13% of the weight of all the raw material components into all the weighed raw material components, and stirring in a stirrer to obtain a cement-based micro-expansion grouting material D.
Example 5:
the 900 ℃ high-temperature-resistant C80 cement-based micro-expansion grouting material comprises the following components in parts by weight: 105 parts of cement, 12 parts of silica powder, 15 parts of drying mechanism pure hill sand with the grain diameter of 0.15-1.0mm, 30 parts of drying mechanism pure hill sand with the grain diameter of 1.0-2.0mm, 40 parts of drying mechanism pure hill sand with the grain diameter of 2.0-4.0mm, 3 parts of drying mechanism pure hill sand with the grain diameter of 4.0-5.0mm, 3 parts of drying aggregate with the grain diameter of 5.0-10.0mm, 28 parts of black silicon carbide with the grain diameter of 0.15-10.0mm, 1 part of redispersible latex powder, 0.06 part of basalt fiber, 3 parts of sodium tetraborate, 5 parts of powdery sodium metasilicate, 3 parts of magnesium oxide expanding agent, 1.5 parts of anhydrous sodium sulphate, 1.1 part of powdery polycarboxylic acid high-performance water reducing agent, 0.2 part of powdery polyether defoaming agent and 0.015 part of plastic expanding agent, the powdery polycarboxylic acid high-performance water reducing agent is prepared by spraying an S11-F polycarboxylic acid high-performance water reducing agent which is independently developed, and is prepared by the following method:
(1) dissolving 15g of acrylic acid and 200g of methacrylic tartaric acid monoester in deionized water to prepare solution A, and dissolving 0.5g of vitamin C and 0.39g of mercaptopropanol in water to prepare solution B;
(2) putting 100g of allyl alcohol polyoxyethylene ether, 17g of maleic anhydride and 100g of deionized water into a four-neck flask, putting the four-neck flask into an oil bath pot, heating to 60-70 ℃, firstly adding 3.8g of 27.5% H into a mixed solution of the allyl alcohol polyoxyethylene ether and the maleic anhydride which are heated to 60-70 ℃ under stirring 2 O 2 Initiating an initiator, starting to uniformly dropwise add the solution A and the solution B into the four-neck flask by using a peristaltic pump, wherein the dropwise adding speed of the solution A is 1mL/min, the dropwise adding speed of the solution B is 0.8mL/min, and preserving heat for 4 hours after the dropwise adding is finished to obtain an intermediate mother solution;
(3) and (3) cooling the intermediate mother liquor to 30-40 ℃, adjusting the pH value to 7, and drying and spraying powder to obtain the powdery polycarboxylic acid high-performance water reducer.
At present, the MB value of the machine-made sand is controlled below 1.4 when the machine-made sand is used, so that the prepared grouting material has smaller slump loss, a large amount of machine-made sand cannot be applied to the preparation of the grouting material, and the preparation cost of the grouting material is invisibly increased.
A preparation method of a 900 ℃ high-temperature-resistant C80 cement-based micro-expansion grouting material comprises the steps of weighing and metering all raw material components of the grouting material according to a ratio, adding water accounting for 13% of the weight of all the raw material components into all the weighed raw material components, putting the raw material components into a stirrer, and stirring to obtain the cement-based micro-expansion grouting material E.
Example 6:
the 900 ℃ high-temperature resistant C80 cement-based micro-expansion grouting material comprises the following components in parts by weight: 118 parts of cement, 6 parts of silica powder, 13 parts of drying mechanism pure hill sand with the particle size of 0.15-1.0mm, 36.5 parts of drying mechanism pure hill sand with the particle size of 1.0-2.0mm, 42 parts of drying mechanism pure hill sand with the particle size of 2.0-4.0mm, 5 parts of drying mechanism pure hill sand with the particle size of 4.0-10.0mm, 20 parts of black silicon carbide with the particle size of 0.15-10.0mm, 0.5 part of redispersible latex powder, 0.04 part of basalt fiber, 2 parts of sodium tetraborate, 4 parts of powdery anhydrous sodium metasilicate, 2 parts of magnesium oxide expanding agent, 1 part of anhydrous sodium sulphate, 0.7 part of powdery polycarboxylic acid high-performance water reducing agent, 0.1 part of powdery polyether defoaming agent and 0.005 part of plastic expanding agent. The powdery polycarboxylic acid high-performance water reducing agent is prepared by spraying an S11-F polycarboxylic acid high-performance water reducing agent which is independently developed, and is prepared by the following method:
(1) dissolving 15g of acrylic acid and 200g of methacrylic tartaric acid monoester in deionized water to prepare solution A, and dissolving 0.5g of vitamin C and 0.39g of mercaptopropanol in water to prepare solution B;
(2) putting 100g of allyl alcohol polyoxyethylene ether, 17g of maleic anhydride and 100g of deionized water into a four-neck flask, putting the four-neck flask into an oil bath pot, heating to 60-70 ℃, firstly adding 3.8g of 27.5% H into a mixed solution of the allyl alcohol polyoxyethylene ether and the maleic anhydride which are heated to 60-70 ℃ under stirring 2 O 2 Initiating an initiator, and then starting to uniformly dropwise add the solution A and the solution B into the four-neck flask by using a peristaltic pump, wherein the dropwise adding speed of the solution A is 1mL/min, the dropwise adding speed of the solution B is 0.8mL/min, and after the dropwise adding is finished, keeping the temperature for 4 hours to obtain an intermediate mother solution;
(3) and (3) cooling the intermediate mother liquor to 30-40 ℃, adjusting the pH value to 7, and drying and spraying powder to obtain the powdery polycarboxylic acid high-performance water reducing agent.
At present, the MB value of the machine-made sand is controlled below 1.4 when the machine-made sand is used, so that the prepared grouting material has smaller slump loss, a large amount of machine-made sand cannot be applied to the preparation of the grouting material, and the preparation cost of the grouting material is invisibly increased.
A preparation method of a 900 ℃ high-temperature-resistant C80 cement-based micro-expansion grouting material comprises the steps of weighing and metering all raw material components of the grouting material according to a ratio, adding water accounting for 13% of the weight of all the raw material components into all the weighed raw material components, and stirring in a stirrer to obtain a cement-based micro-expansion grouting material F.
The grouting materials obtained in the embodiments are tested for product performance according to GB/T5072-2008 'test method for normal temperature compressive strength of refractory material' and GB/T50448-2015 'technical specification for application of cement-based grouting material', and the test results are shown in Table 1.
Table 1 results of performance test of grouting materials prepared in examples
According to the inspection results, the grouting material obtained by the embodiment of the invention has excellent compressive strength, better vertical micro-expansion rate, excellent compressive strength at 900 ℃, good high temperature resistance, and can effectively avoid the phenomena of cracking, crushing, scattering, differentiation and the like when being applied to the parts of converter rails, kiln rails and various high-temperature environments of steel mills, primary and secondary chemical engineering, metallurgy reinforced grouting, heat-resistant ground of special workshops, exhaust flues of aircraft engine maintenance workshops, silencing barrels of missile launching wells and the like, and important industrial fields of coal discharge ditches, coal hoppers, coal storage bins, dry coal grids, tippers, slag conveyors and water treatment high temperature resistance in the power generation industry.
It should be noted that the above embodiments are only for illustrating the present invention, but the present invention is not limited to the above embodiments, and any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention fall within the protection scope of the present invention.
Claims (6)
1. The 900 ℃ high-temperature-resistant C80 cement-based micro-expansion grouting material is characterized by comprising the following components in parts by weight: 120 parts of cement 105-containing material, 6-12 parts of silica powder, 78-107 parts of machine-made sand, 20-30 parts of black silicon carbide with the particle size of 0.15-10.0mm, 0.5-1 part of redispersible latex powder, 0.04-0.06 part of basalt fiber, 2-3 parts of sodium tetraborate, 4-6 parts of powdery anhydrous sodium metasilicate, 2-3 parts of magnesium oxide expanding agent, 1-1.5 parts of early strength agent, 0.7-1.1 part of powdery polycarboxylic acid high-performance water reducing agent, 0.1-0.2 part of powdery polyether defoaming agent and 0.005-0.015 part of plastic expanding agent;
the machine-made sand comprises 10-15 parts of drying machine-made pure mountain sand with the grain diameter of 0.15-1.0mm, 30-45 parts of drying machine-made pure mountain sand with the grain diameter of 1.0-2.0mm, 35-42 parts of drying machine-made pure mountain sand with the grain diameter of 2.0-4.0mm, 2-3 parts of drying machine-made pure mountain sand with the grain diameter of 4.0-5.0mm and 2-3 parts of drying aggregate with the grain diameter of 5.0-10.0 mm;
the cement is ordinary portland cement;
the powdery polycarboxylic acid high-performance water reducing agent is prepared by the following method:
(1) dissolving acrylic acid and methacrylic tartaric acid monoester in deionized water to prepare solution A, and dissolving vitamin C and mercaptopropanol in water to prepare solution B;
(2) under stirring, firstly adding H into the mixed solution of allyl alcohol polyoxyethylene ether and maleic anhydride which is heated to 60-70 DEG C 2 O 2 Uniformly dripping the solution A and the solution B prepared in the step (1) with an initiator, and preserving the heat for 4 hours to obtain intermediate mother liquor;
(3) cooling the intermediate mother liquor to 30-40 ℃, adjusting the pH value to 7, and drying and spraying powder to obtain the powdery polycarboxylic acid high-performance water reducing agent;
the MB value of the mechanism sand is less than or equal to 1.8 and less than or equal to 1.4.
2. The 900 ℃ high temperature resistant C80 cement-based micro-expansion grouting material as claimed in claim 1, wherein the crushing value of the machine-made sand is less than or equal to 16%, the saturated surface dry water absorption is less than or equal to 2.2%, and the stone powder content is less than or equal to 5%.
3. The 900 ℃ high temperature resistant C80 cement-based micro-expansive grouting material as claimed in claim 1, wherein the early strength agent is anhydrous sodium sulphate or formate early strength agent.
4. The 900 ℃ high temperature resistant C80 cement-based micro-expansive grouting material as claimed in claim 1, wherein the dropping speed of the A solution is 1mL/min, and the dropping speed of the B solution is 0.8 mL/min.
5. The preparation method of the 900 ℃ high temperature resistant C80 cement-based micro-expansion grouting material as claimed in any one of claims 1-4, characterized in that, the components are weighed according to the proportion, and then 13% by weight of water is added to be stirred and mixed uniformly, so as to obtain the high temperature resistant cement-based micro-expansion grouting material.
6. Use of a 900 ℃ high temperature resistant C80 cement-based micro-expansive grouting material as claimed in any one of claims 1-4 in building construction.
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