CN117985999A - Organic-inorganic composite grouting material for road repair and reinforcement - Google Patents
Organic-inorganic composite grouting material for road repair and reinforcement Download PDFInfo
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- CN117985999A CN117985999A CN202410399217.8A CN202410399217A CN117985999A CN 117985999 A CN117985999 A CN 117985999A CN 202410399217 A CN202410399217 A CN 202410399217A CN 117985999 A CN117985999 A CN 117985999A
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- sepiolite
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- 239000000463 material Substances 0.000 title claims abstract description 68
- 239000002131 composite material Substances 0.000 title claims abstract description 56
- 230000002787 reinforcement Effects 0.000 title claims description 23
- 230000008439 repair process Effects 0.000 title claims description 22
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 53
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 52
- 239000004113 Sepiolite Substances 0.000 claims abstract description 50
- 229910052624 sepiolite Inorganic materials 0.000 claims abstract description 50
- 235000019355 sepiolite Nutrition 0.000 claims abstract description 50
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000000843 powder Substances 0.000 claims abstract description 31
- 150000002895 organic esters Chemical class 0.000 claims abstract description 28
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 27
- 239000012948 isocyanate Substances 0.000 claims abstract description 24
- 150000002513 isocyanates Chemical class 0.000 claims abstract description 24
- 229920001577 copolymer Polymers 0.000 claims abstract description 22
- IMNIMPAHZVJRPE-UHFFFAOYSA-N triethylenediamine Chemical compound C1CN2CCN1CC2 IMNIMPAHZVJRPE-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229920003169 water-soluble polymer Polymers 0.000 claims abstract description 16
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- BPXVHIRIPLPOPT-UHFFFAOYSA-N 1,3,5-tris(2-hydroxyethyl)-1,3,5-triazinane-2,4,6-trione Chemical compound OCCN1C(=O)N(CCO)C(=O)N(CCO)C1=O BPXVHIRIPLPOPT-UHFFFAOYSA-N 0.000 claims abstract description 11
- BDAGIHXWWSANSR-UHFFFAOYSA-M Formate Chemical compound [O-]C=O BDAGIHXWWSANSR-UHFFFAOYSA-M 0.000 claims abstract description 11
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000008367 deionised water Substances 0.000 claims abstract description 11
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 11
- YDEXUEFDPVHGHE-GGMCWBHBSA-L disodium;(2r)-3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical compound [Na+].[Na+].COC1=CC=CC(C[C@H](CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O YDEXUEFDPVHGHE-GGMCWBHBSA-L 0.000 claims abstract description 11
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229940096992 potassium oleate Drugs 0.000 claims abstract description 11
- MLICVSDCCDDWMD-KVVVOXFISA-M potassium;(z)-octadec-9-enoate Chemical compound [K+].CCCCCCCC\C=C/CCCCCCCC([O-])=O MLICVSDCCDDWMD-KVVVOXFISA-M 0.000 claims abstract description 11
- BYACHAOCSIPLCM-UHFFFAOYSA-N 2-[2-[bis(2-hydroxyethyl)amino]ethyl-(2-hydroxyethyl)amino]ethanol Chemical compound OCCN(CCO)CCN(CCO)CCO BYACHAOCSIPLCM-UHFFFAOYSA-N 0.000 claims abstract description 6
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 5
- 238000002360 preparation method Methods 0.000 claims description 37
- 238000003756 stirring Methods 0.000 claims description 35
- 238000000034 method Methods 0.000 claims description 21
- 239000002002 slurry Substances 0.000 claims description 21
- 238000001035 drying Methods 0.000 claims description 19
- 239000007788 liquid Substances 0.000 claims description 16
- URAYPUMNDPQOKB-UHFFFAOYSA-N triacetin Chemical compound CC(=O)OCC(OC(C)=O)COC(C)=O URAYPUMNDPQOKB-UHFFFAOYSA-N 0.000 claims description 16
- 239000000243 solution Substances 0.000 claims description 15
- 239000004115 Sodium Silicate Substances 0.000 claims description 14
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 14
- 238000006243 chemical reaction Methods 0.000 claims description 13
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 12
- 239000002245 particle Substances 0.000 claims description 12
- 239000011734 sodium Substances 0.000 claims description 12
- 229910052708 sodium Inorganic materials 0.000 claims description 12
- FMGBDYLOANULLW-UHFFFAOYSA-N 3-isocyanatopropyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)CCCN=C=O FMGBDYLOANULLW-UHFFFAOYSA-N 0.000 claims description 11
- 235000019820 disodium diphosphate Nutrition 0.000 claims description 11
- GYQBBRRVRKFJRG-UHFFFAOYSA-L disodium pyrophosphate Chemical compound [Na+].[Na+].OP([O-])(=O)OP(O)([O-])=O GYQBBRRVRKFJRG-UHFFFAOYSA-L 0.000 claims description 11
- XLUBVTJUEUUZMR-UHFFFAOYSA-B silicon(4+);tetraphosphate Chemical compound [Si+4].[Si+4].[Si+4].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O XLUBVTJUEUUZMR-UHFFFAOYSA-B 0.000 claims description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 10
- 238000002844 melting Methods 0.000 claims description 10
- 230000008018 melting Effects 0.000 claims description 10
- 238000004806 packaging method and process Methods 0.000 claims description 10
- 229920003023 plastic Polymers 0.000 claims description 10
- 239000004033 plastic Substances 0.000 claims description 10
- 235000019795 sodium metasilicate Nutrition 0.000 claims description 10
- 239000001087 glyceryl triacetate Substances 0.000 claims description 8
- 235000013773 glyceryl triacetate Nutrition 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 8
- 229960002622 triacetin Drugs 0.000 claims description 8
- 238000000498 ball milling Methods 0.000 claims description 6
- GTCAXTIRRLKXRU-UHFFFAOYSA-N methyl carbamate Chemical compound COC(N)=O GTCAXTIRRLKXRU-UHFFFAOYSA-N 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- KODLUXHSIZOKTG-UHFFFAOYSA-N 1-aminobutan-2-ol Chemical compound CCC(O)CN KODLUXHSIZOKTG-UHFFFAOYSA-N 0.000 claims description 4
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 claims description 4
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 claims description 4
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 4
- SLINHMUFWFWBMU-UHFFFAOYSA-N Triisopropanolamine Chemical compound CC(O)CN(CC(C)O)CC(C)O SLINHMUFWFWBMU-UHFFFAOYSA-N 0.000 claims description 4
- 238000011049 filling Methods 0.000 claims description 4
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 4
- LTMRRSWNXVJMBA-UHFFFAOYSA-L 2,2-diethylpropanedioate Chemical compound CCC(CC)(C([O-])=O)C([O-])=O LTMRRSWNXVJMBA-UHFFFAOYSA-L 0.000 claims description 3
- JTXMVXSTHSMVQF-UHFFFAOYSA-N 2-acetyloxyethyl acetate Chemical compound CC(=O)OCCOC(C)=O JTXMVXSTHSMVQF-UHFFFAOYSA-N 0.000 claims description 3
- MUXOBHXGJLMRAB-UHFFFAOYSA-N Dimethyl succinate Chemical compound COC(=O)CCC(=O)OC MUXOBHXGJLMRAB-UHFFFAOYSA-N 0.000 claims description 3
- 229920002873 Polyethylenimine Polymers 0.000 claims description 3
- BEPAFCGSDWSTEL-UHFFFAOYSA-N dimethyl malonate Chemical compound COC(=O)CC(=O)OC BEPAFCGSDWSTEL-UHFFFAOYSA-N 0.000 claims description 3
- JFCQEDHGNNZCLN-UHFFFAOYSA-N glutaric acid Chemical compound OC(=O)CCCC(O)=O JFCQEDHGNNZCLN-UHFFFAOYSA-N 0.000 claims description 3
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 claims description 3
- LOMVENUNSWAXEN-UHFFFAOYSA-N Methyl oxalate Chemical compound COC(=O)C(=O)OC LOMVENUNSWAXEN-UHFFFAOYSA-N 0.000 claims description 2
- 150000004985 diamines Chemical class 0.000 claims description 2
- 150000003627 tricarboxylic acid derivatives Chemical class 0.000 claims description 2
- 238000010257 thawing Methods 0.000 abstract description 9
- 230000008014 freezing Effects 0.000 abstract 1
- 238000007710 freezing Methods 0.000 abstract 1
- 239000004568 cement Substances 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 7
- 238000004132 cross linking Methods 0.000 description 7
- 239000002994 raw material Substances 0.000 description 6
- 230000007547 defect Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 235000019353 potassium silicate Nutrition 0.000 description 4
- 239000000654 additive Substances 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 229920000876 geopolymer Polymers 0.000 description 3
- DIHKMUNUGQVFES-UHFFFAOYSA-N n,n,n',n'-tetraethylethane-1,2-diamine Chemical compound CCN(CC)CCN(CC)CC DIHKMUNUGQVFES-UHFFFAOYSA-N 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- AGNTUZCMJBTHOG-UHFFFAOYSA-N 3-[3-(2,3-dihydroxypropoxy)-2-hydroxypropoxy]propane-1,2-diol Chemical compound OCC(O)COCC(O)COCC(O)CO AGNTUZCMJBTHOG-UHFFFAOYSA-N 0.000 description 2
- 239000004971 Cross linker Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- -1 alkaline excitant Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 238000007596 consolidation process Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- LOMVENUNSWAXEN-NUQCWPJISA-N dimethyl oxalate Chemical group CO[14C](=O)[14C](=O)OC LOMVENUNSWAXEN-NUQCWPJISA-N 0.000 description 1
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- RWLDAJMGAVDXSH-UHFFFAOYSA-N ethane-1,1,2-tricarboxylic acid Chemical group OC(=O)CC(C(O)=O)C(O)=O RWLDAJMGAVDXSH-UHFFFAOYSA-N 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- ODGAOXROABLFNM-UHFFFAOYSA-N polynoxylin Chemical compound O=C.NC(N)=O ODGAOXROABLFNM-UHFFFAOYSA-N 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- BHZOKUMUHVTPBX-UHFFFAOYSA-M sodium acetic acid acetate Chemical class [Na+].CC(O)=O.CC([O-])=O BHZOKUMUHVTPBX-UHFFFAOYSA-M 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000006467 substitution reaction 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
- C04B28/24—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 alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
-
- 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
- C04B2111/72—Repairing or restoring existing buildings or building materials
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Polyurethanes Or Polyureas (AREA)
- Sealing Material Composition (AREA)
Abstract
An organic-inorganic composite grouting material for repairing and reinforcing a road, which belongs to the technical field of road engineering and consists of A, B components; the A consists of sodium water glass solution, water-soluble polymer, sepiolite supported cross-linking agent, tetrahydroxyethyl ethylenediamine, 1,3, 5-tri (2-hydroxyethyl) cyanuric acid, pentaerythritol, triethanolamine, magnesium aluminum silicate, triethylene diamine, 2-hydroxy-N, N, N-trimethyl-1-propylamine formate, potassium oleate, sodium lignin sulfonate, polyether-siloxane copolymer and deionized water; b consists of isocyanate, a composite powder curing agent, an organic ester curing agent and a polyether-siloxane copolymer; the fluidity of the grouting material is 7-11 s, initial setting is 40-52 min, final setting is 57-69 min, compressive strength is 20.6-25.7 MPa for 3 days, 40.5-46.1 MPa for 7 days, 60.3-64.2 MPa for 28 days, and 10 times of freezing and thawing expansion rate is 0.1-0.4%.
Description
Technical Field
The invention relates to an organic-inorganic composite grouting material for road repair and reinforcement, belonging to the technical field of road engineering.
Background
For a long time, maintenance technologies such as integral digging, replacement and the like are mostly adopted for repairing road subgrade defects and base layer damages, and the method is direct and effective, but has long construction period, large structural disturbance, long-time traffic influence, difficult adaptation to the high-efficiency requirements of urban road traffic and serious influence on urban environment. Grouting reinforcement technology based on grouting materials is expanded from geotechnical engineering to road engineering, and is gradually popularized particularly in daily maintenance, middle and small repair and other engineering of roads. The quality of road repair reinforcement plays a crucial decisive role in grouting materials.
The grouting material mainly comprises two major types of inorganic series and organic series, wherein the inorganic series comprises cement type slurry and water glass type slurry, and the organic series mainly comprises acrylamide type slurry, epoxy resin type slurry, unsaturated ester type slurry, urea formaldehyde type slurry and polyurethane type slurry. The cement slurry has poor fluidity, is difficult to control, is difficult to inject into small gaps, has serious shrinkage after curing, and is not suitable for road repair and reinforcement. The water glass slurry has good pourability and low cost, but has the problems of insufficient curing strength and durability. The grouting materials of the organic series have good fluidity and permeability, the gelation time can be accurately controlled, the construction adjustable range is wide, the toughness after consolidation is strong, but the defects are obvious, the compressive strength of the consolidated body is not very good, and the price is much more expensive than that of the grouting materials of the inorganic series. Therefore, the organic-inorganic composite grouting material is an effective path for reducing the cost and improving the quality of the grouting solidified body, and the industry has studied and explored the aspects.
Chinese patent CN114644490a discloses a grouting material for road reinforcement and repair, which comprises 60-80 parts of cementing material, 15-25 parts of admixture, 2-8 parts of stabilizer, 0.2-0.8 part of anionic surfactant and 0.2-1 part of coagulant; wherein the stabilizer comprises 1-5.3 parts of sulphoaluminate and 1-2.7 parts of talcum powder. The fluidity of the grouting material after being mixed by adding water can reach 19-22 s, the final setting time is only 4-5 h, the flexural strength of the grouting consolidation body in 3 days and 28 days can reach 5.1-5.9 MPa, 8-8.9 MPa, the compressive strength in 3 days and 28 days is 22-26 MPa, 53-61 MPa, and the volume expansion rate is 0.02-0.08%. The grouting material prepared by the patent has the advantages that the main cementing material is cement, the flowing auxiliary agent is high polymer, the fineness of cement particles is 400-500 meshes, the particles are relatively large, the fluidity is definitely not particularly good, the disclosed data also show that the fluidity of the slurry is above 20 seconds, the slurry is difficult to fill fine slits before the gel is solidified in the grouting process, and the final repairing and reinforcing effects are greatly influenced.
Chinese patent CN116947389a discloses a geopolymer grouting material and a preparation method thereof, comprising siliceous raw materials, aluminum raw materials, calcareous raw materials, alkaline excitant, composite additive and early strength agent; wherein the alkaline excitant is a mixture of sodium silicate and sodium metaaluminate, and the composite additive is a mixture of polycarboxylic acid, triethanolamine and ethylene-vinyl acetate copolymer; the preparation method comprises the steps of firstly drying siliceous raw materials, aluminum raw materials and calcium raw materials, mixing and ball milling, then adding an alkaline trigger, a composite additive and an early strength agent, uniformly mixing to form a mixture, and finally mixing according to a water-cement ratio to form the geopolymer grouting material. The geopolymer grouting material prepared by the patent is composite grouting material of water glass and high polymer, the fluidity can reach 19 seconds, and is not particularly ideal, and the compressive strength of a solidified body obtained by grouting is not too high, and is below 60 MPa.
As can be seen from the above discussion, the existing organic-inorganic composite grouting material still has the remarkable defects of poor fluidity, low strength and the like, so that the development of the organic-inorganic composite grouting material with good fluidity and high strength has very practical significance for repairing and reinforcing roads in China.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides an organic-inorganic composite grouting material for road repair and reinforcement, which realizes the following aims: and preparing the organic-inorganic composite grouting material with good fluidity and high strength.
In order to achieve the aim of the invention, the invention adopts the following technical scheme:
The organic-inorganic composite grouting material for road repair and reinforcement consists of a component A and a component B, wherein the component A and the component B are mixed according to the mass ratio of 1:0.8-1.3 during grouting;
The specific formula of the component A comprises the following components in parts by weight:
70-100 parts of sodium water glass solution,
2-9 Parts of water-soluble polymer,
25-50 Parts of sepiolite-loaded cross-linking agent,
1-4 Parts of tetrahydroxyethyl ethylenediamine,
1-4 Parts of 1,3, 5-tri (2-hydroxyethyl) cyanuric acid,
10-30 Parts of pentaerythritol,
2-8 Parts of triethanolamine,
0.3 To 0.9 part of magnesium aluminum silicate,
0.3 To 1 part of triethylenediamine,
0.5-1 Part of 2-hydroxy-N, N, N-trimethyl-1-propylamine formate,
0.5 To 1.1 parts of potassium oleate,
0.5-3 Parts of sodium lignin sulfonate,
0.1 To 0.5 part of polyether-siloxane copolymer,
35-55 Parts of deionized water;
In the sodium water glass solution, the mass fraction of sodium metasilicate is 15-35 wt%, and the modulus of the sodium metasilicate is 1.5-3.5;
the water-soluble polymer is one of polyvinyl alcohol and polyethyleneimine;
the specific formula of the component B comprises the following components in parts by weight:
100-140 parts of isocyanate,
10-20 Parts of composite powder curing agent,
15-25 Parts of organic ester curing agent,
0.1-0.3 Parts of polyether-siloxane copolymer;
the isocyanate is one of toluene diisocyanate and diphenylmethane diisocyanate;
The organic ester curing agent is one of triacetin, 3-hydroxy-3-carboxyl tributyl glutarate, 1, 2-ethane triethyl tricarboxylic acid, dimethyl oxalate, dimethyl succinate, dimethyl malonate, diethyl malonate and methyl carbamate;
the following is a further improvement of the above technical scheme:
step1, preparation of sepiolite load cross-linking agent
Drying sepiolite at 110-140 ℃ for 2-5 hours, placing the sepiolite into a thoroughly dried anhydrous vacuum sealed mixing kettle, continuously vacuumizing to maintain the pressure in the kettle at minus 0.095 to minus 0.1MPa, keeping negative pressure for 18-26 hours, sucking the cross-linking agent melted into a liquid state into a reaction kettle by virtue of the negative pressure, raising the temperature in the kettle to the melting point temperature of the cross-linking agent in advance and keeping the constant temperature, keeping the suction amount of the cross-linking agent at the lowest suction amount by taking the sepiolite in the whole immersed kettle as the minimum suction amount, standing for 18-29 hours in a sealed state at constant temperature, transferring the materials in the kettle into a sealed dry centrifuge, centrifugally separating, keeping the temperature of the materials at the melting point temperature of the cross-linking agent in the transferring and separating process, and putting the solid obtained by centrifugal separation into a dry sealed container for standby;
the particle size of the sepiolite is 20-5000 nm;
The cross-linking agent is one of triglycerin, 2-hydroxyethylamine, triisopropanolamine, 2-hydroxybutylamine and 1, 2-ethylene glycol diacetate.
Step 2, preparation of the composite powder curing agent
Putting sodium fluosilicate, water-soluble silicon phosphate and disodium dihydrogen pyrophosphate into a vacuum oven, drying at 80-95 ℃ for 15-19 hours, putting into a dry ball mill, adding absolute ethyl alcohol and 3-isocyanatopropyl trimethoxysilane, ball milling to a particle size of 0.01-1 mu m, discharging to obtain slurry, and putting the slurry into the vacuum oven for drying at 60-75 ℃ for 12-18 hours to obtain a composite powder curing agent;
The mass ratio of the sodium fluosilicate to the water-soluble silicon phosphate to the disodium dihydrogen pyrophosphate to the anhydrous ethanol to the 3-isocyanatopropyl trimethoxy silane is 6-20:15-45:10-50:40-70:3-9.
Step3, preparation of component A
According to the specific formula of the component A in parts by weight, deionized water, polyether-siloxane copolymer, sodium lignin sulfonate, potassium oleate, 2-hydroxy-N, N, N-trimethyl-1-propylamine formate, triethylene diamine, triethanolamine, pentaerythritol and sepiolite load cross-linking agent are placed into a dry double-planetary stirrer, stirring and dispersing are carried out for 8-14 hours under the conditions of controlling stirring speed to 80-110 r/min and dispersing speed to 5000-7500 r/min, then tetraethylene diamine, 1,3, 5-tris (2-hydroxyethyl) cyanuric acid and sodium water glass solution are added, stirring and dispersing are carried out for 4-7 hours continuously, then water-soluble polymer is added, stirring and dispersing are carried out continuously for 2-5 hours, magnesium aluminum silicate is added, stirring and dispersing are carried out continuously for 3-5 hours, mixed liquid is obtained, and the mixed liquid is filled into a plastic packaging barrel after vacuum defoaming, so that the component A is obtained.
Step 4, preparation of the component B
According to the specific formula of the component B in parts by weight, isocyanate, a composite powder curing agent, an organic ester curing agent and a polyether-siloxane copolymer are placed into a dry double-planetary stirrer, stirring speed is controlled to be 80-110 r/min, dispersing speed is controlled to be 5000-7500 r/min, stirring and dispersing are carried out for 14-20 hours, and after vacuum defoamation, the component B is obtained by filling the components into a dry plastic packaging barrel and introducing nitrogen for protection.
Compared with the prior art, the invention has the following beneficial effects:
1. The invention uses sepiolite to load cross-linking agents such as triglycerin, 2-hydroxy ethylamine, triisopropanolamine, 2-hydroxy butylamine, 1, 2-glycol diacetate and the like, after the component A and the component B are mixed, the cross-linking agents gradually overflow from the inner hole of the sepiolite and react with isocyanate in a cross-linking way along with the exothermic reaction of isocyanate, and the way of gradually releasing the cross-linking agents by the reaction heat can control the speed of the cross-linking gel reaction, so that the grouting material maintains certain fluidity in a quite long time, the penetration of the grouting material into micro gaps is facilitated, the cross-linking curing reaction is carried out around the center point of the sepiolite, the sepiolite is positioned in the center position of a cross-linking curing network, the reinforcing effect of the sepiolite on the cured body of the grouting material is further promoted and increased, and the compressive strength and the freeze-thawing resistance of the final cured body are greatly improved;
2. According to the invention, the 3-isocyanatopropyl trimethoxy silane is used for carrying out surface modification on the composite powder curing agent composed of sodium fluosilicate, water-soluble silicon phosphate and disodium dihydrogen pyrophosphate, and the polar groups on the surfaces of the three powders are replaced by isocyanate functional groups or siloxane functional groups, so that the three powders are easier to be uniformly dispersed in the component B taking isocyanate as a main body, and after the component A and the component B are mixed with each other, the composite powder curing agent can promote the crosslinking curing reaction of sodium water glass, so that the compactness of a water glass consolidated body is improved, and finally the compressive strength and the freeze-thawing resistance of the grouting material cured body are greatly improved;
3. The organic ester curing agents added into the component B are all low-viscosity liquid, have very good fluidity and very good isocyanate compatibility, so that the component B can still keep very good fluidity after a certain amount of powder is added, and after the component A and the component B are mixed and react to release a great amount of reaction heat, the organic ester curing agents can be rapidly hydrolyzed to generate corresponding weak acid so as to promote and participate in the crosslinking curing reaction of sodium silicate, and meanwhile, the degree of compactness of a sodium silicate crosslinking network is improved, and finally, the compressive strength and freeze-thaw resistance of a grouting material curing body are greatly improved;
4. The fluidity of the organic-inorganic composite grouting material for road repair and reinforcement is 7-11 s, the initial setting time is 40-52 min, the final setting time is 57-69 min, the compressive strength is 20.6-25.7 MPa, the compressive strength is 40.5-46.1 MPa, the compressive strength is 28d is 60.3-64.2 MPa, and the 10-time freeze thawing expansion rate is 0.1-0.4%.
Detailed Description
The following description of the preferred embodiments of the present invention is provided for the purpose of illustration and explanation only and is not intended to limit the present invention.
Example 1: organic-inorganic composite grouting material for road repair and reinforcement
Step1, preparation of sepiolite load cross-linking agent
Drying sepiolite at 130 ℃ for 4 hours, putting the sepiolite into a thoroughly dried anhydrous vacuum airtight mixing kettle, continuously vacuumizing to maintain the pressure in the kettle at-0.096 MPa, keeping the negative pressure for 23 hours, sucking the cross-linking agent melted into a liquid state into the reaction kettle by virtue of the negative pressure, raising the temperature in the kettle to the melting point temperature of the cross-linking agent in advance, keeping the constant temperature, keeping the suction amount of the cross-linking agent at the lowest suction amount by taking the sepiolite in the whole immersed kettle, keeping the constant temperature in a closed state for 25 hours after the minimum suction amount is reached, transferring the materials in the kettle into a closed drying centrifuge, centrifugally separating, keeping the temperature of the materials at the melting point temperature of the cross-linking agent in the transferring and separating process, and putting the solid obtained by centrifugal separation into a dry closed container for standby;
the particle size of the sepiolite is 130nm;
The cross-linking agent is triglycerin.
Step 2, preparation of the composite powder curing agent
Drying sodium fluosilicate, water-soluble silicon phosphate and disodium dihydrogen pyrophosphate in a vacuum oven at 89 ℃ for 18 hours, putting the dried materials in a dry ball mill, adding absolute ethyl alcohol and 3-isocyanatopropyl trimethoxy silane, ball milling to the particle size of 0.6 mu m, discharging to obtain slurry, and drying the slurry in the vacuum oven at 68 ℃ for 15 hours to obtain the composite powder curing agent;
The mass ratio of the sodium fluosilicate to the water-soluble silicon phosphate to the disodium dihydrogen pyrophosphate to the anhydrous ethanol to the 3-isocyanatopropyl trimethoxysilane is 14:33:36:55:4.
Step3, preparation of component A
The specific formula of the component A comprises the following components in parts by weight:
87 parts of sodium water glass solution,
5 Parts of water-soluble polymer,
29 Parts of sepiolite supported cross-linking agent,
2 Parts of tetrahydroxyethyl ethylenediamine,
3 Parts of 1,3, 5-tris (2-hydroxyethyl) cyanuric acid,
22 Parts of pentaerythritol,
5 Parts of triethanolamine,
0.5 Part of magnesium aluminum silicate,
0.7 Part of triethylene diamine,
0.8 Part of 2-hydroxy-N, N, N-trimethyl-1-propylamine formate,
0.9 Part of potassium oleate,
2 Parts of sodium lignin sulfonate,
0.4 Part of polyether-siloxane copolymer,
46 Parts of deionized water;
In the sodium water glass solution, the mass fraction of sodium metasilicate is 19wt%, and the modulus of the sodium metasilicate is 1.9;
The water-soluble polymer is polyvinyl alcohol;
According to the specific formula of the component A in parts by weight, deionized water, polyether-siloxane copolymer, sodium lignin sulfonate, potassium oleate, 2-hydroxy-N, N, N-trimethyl-1-propylamine formate, triethylene diamine, triethanolamine, pentaerythritol and sepiolite load cross-linking agent are placed into a dry double-planetary stirrer, stirring and dispersing are carried out for 13 hours under the conditions of controlling stirring speed to 95 r/min and dispersing speed to 6800 r/min, then tetraethyl ethylenediamine, 1,3, 5-tris (2-hydroxyethyl) cyanuric acid and sodium water glass solution are added, stirring and dispersing are continued for 6 hours, then water-soluble polymer is added, stirring and dispersing are continued for 4 hours, magnesium aluminum silicate is added, stirring and dispersing are continued for 4 hours, mixed material liquid is obtained, and after vacuum defoaming, the mixed material liquid is filled into a plastic packaging barrel, and the component A is obtained.
Step 4, preparation of the component B
The specific formula of the component B comprises the following components in parts by weight:
135 parts of isocyanate,
17 Parts of composite powder curing agent,
19 Parts of organic ester curing agent,
0.2 Parts of polyether-siloxane copolymer;
the isocyanate is toluene diisocyanate;
the organic ester curing agent is glyceryl triacetate;
According to the specific formula of the component B in parts by weight, isocyanate, a composite powder curing agent, an organic ester curing agent and a polyether-siloxane copolymer are placed into a dry double-planetary stirrer, stirring and dispersing are carried out for 18 hours under the conditions of controlling stirring speed to be 85 revolutions per minute and dispersing speed to be 5800 revolutions per minute, and the component B is obtained after filling into a dry plastic packaging barrel and introducing nitrogen for protection after vacuum defoaming.
Example 2: organic-inorganic composite grouting material for road repair and reinforcement
Step1, preparation of sepiolite load cross-linking agent
Drying sepiolite at 110 ℃ for 2 hours, putting the sepiolite into a thoroughly dried anhydrous vacuum airtight mixing kettle, continuously vacuumizing to maintain the pressure in the kettle at-0.095 MPa, keeping the negative pressure for 18 hours, sucking the cross-linking agent melted into a liquid state into the reaction kettle by virtue of the negative pressure, raising the temperature in the kettle to the melting point temperature of the cross-linking agent in advance, keeping the constant temperature, keeping the suction amount of the cross-linking agent at the lowest suction amount by taking the sepiolite in the whole immersed kettle, keeping the constant temperature for 18 hours in a closed state after reaching the lowest suction amount, transferring the materials in the kettle into a closed drying centrifuge, centrifugally separating, keeping the temperature of the materials at the melting point temperature of the cross-linking agent in the transferring and separating process, and putting the solid obtained by centrifugal separation into a dry closed container for standby;
The particle size of the sepiolite is 20nm;
the cross-linking agent is 2-hydroxy ethylamine.
Step 2, preparation of the composite powder curing agent
Drying sodium fluosilicate, water-soluble silicon phosphate and disodium dihydrogen pyrophosphate in a vacuum oven at 80 ℃ for 15 hours, putting in a dry ball mill, adding absolute ethyl alcohol and 3-isocyanatopropyl trimethoxy silane, ball milling to a particle size of 0.01 mu m, discharging to obtain slurry, and drying the slurry in the vacuum oven at 60 ℃ for 12 hours to obtain a composite powder curing agent;
The mass ratio of the sodium fluosilicate to the water-soluble silicon phosphate to the disodium dihydrogen pyrophosphate to the anhydrous ethanol to the 3-isocyanatopropyl trimethoxy silane is 6:15:10:40:3.
Step3, preparation of component A
The specific formula of the component A comprises the following components in parts by weight:
70 parts of sodium water glass solution,
2 Parts of water-soluble polymer,
Sepiolite loaded cross-linking agent 25 parts,
1 Part of tetrahydroxyethyl ethylenediamine,
1 Part of 1,3, 5-tris (2-hydroxyethyl) cyanuric acid,
10 Parts of pentaerythritol,
2 Parts of triethanolamine,
0.3 Part of magnesium aluminum silicate,
0.3 Part of triethylene diamine,
0.5 Part of 2-hydroxy-N, N, N-trimethyl-1-propylamine formate,
0.5 Part of potassium oleate,
0.5 Part of sodium lignin sulfonate,
0.1 Part of polyether-siloxane copolymer,
35 Parts of deionized water;
in the sodium water glass solution, the mass fraction of sodium metasilicate is 15wt%, and the modulus of the sodium metasilicate is 1.5;
the water-soluble polymer is polyethyleneimine;
According to the specific formula of the component A in parts by weight, deionized water, polyether-siloxane copolymer, sodium lignin sulfonate, potassium oleate, 2-hydroxy-N, N, N-trimethyl-1-propylamine formate, triethylene diamine, triethanolamine, pentaerythritol and sepiolite load cross-linking agent are placed into a dry double-planetary stirrer, stirring and dispersing are carried out for 8 hours under the conditions of controlling stirring speed to 80 r/min and dispersing speed to 5000 r/min, then tetraethyl ethylenediamine, 1,3, 5-tris (2-hydroxyethyl) cyanuric acid and sodium water glass solution are added, stirring and dispersing are continued for 4 hours, then water-soluble polymer is added, magnesium aluminum silicate is added after stirring and dispersing are continued for 2 hours, mixed material liquid is obtained after stirring and dispersing are continued for 3 hours, and the mixed material liquid is filled into a plastic packaging barrel after vacuum defoaming, so that the component A is obtained.
Step 4, preparation of the component B
The specific formula of the component B comprises the following components in parts by weight:
100 parts of isocyanate,
10 Parts of composite powder curing agent,
15 Parts of organic ester curing agent,
0.1 Part of polyether-siloxane copolymer;
The isocyanate is diphenylmethane diisocyanate;
the organic ester curing agent is 3-hydroxy-3-carboxyl tributyl glutarate;
according to the specific formula of the component B in parts by weight, isocyanate, a composite powder curing agent, an organic ester curing agent and a polyether-siloxane copolymer are placed into a dry double-planetary stirrer, stirring and dispersing are carried out for 14 hours under the conditions of controlling stirring speed to 80 rpm and dispersing speed to 5000 rpm, and the component B is obtained after vacuum defoamation, filled into a dry plastic packaging barrel and nitrogen protection is introduced.
Example 3: organic-inorganic composite grouting material for road repair and reinforcement
Step1, preparation of sepiolite load cross-linking agent
Drying sepiolite at 140 ℃ for 5 hours, putting the sepiolite into a thoroughly dried anhydrous vacuum airtight mixing kettle, continuously vacuumizing to maintain the pressure in the kettle at-0.1 MPa, keeping the negative pressure for 26 hours, sucking the cross-linking agent melted into a liquid state into the reaction kettle by virtue of the negative pressure, raising the temperature in the kettle to the melting point temperature of the cross-linking agent in advance, keeping the constant temperature, keeping the suction amount of the cross-linking agent at the lowest suction amount by taking the sepiolite in the whole immersed kettle, keeping the constant temperature in a closed state for 29 hours after the minimum suction amount is reached, transferring the materials in the kettle into a closed drying centrifuge, centrifugally separating, keeping the temperature of the materials at the melting point temperature of the cross-linking agent in the transferring and separating process, and putting the solid obtained by centrifugal separation into a dry closed container for standby;
The particle size of the sepiolite is 5000nm;
The cross-linking agent is triisopropanolamine.
Step 2, preparation of the composite powder curing agent
Drying sodium fluosilicate, water-soluble silicon phosphate and disodium dihydrogen pyrophosphate in a vacuum oven for 19 hours at 95 ℃, then placing in a dry ball mill, then adding absolute ethyl alcohol and 3-isocyanatopropyl trimethoxy silane, ball milling to a particle size of 1 mu m, discharging to obtain slurry, and then placing the slurry in the vacuum oven for drying at 75 ℃ for 18 hours to obtain a composite powder curing agent;
The mass ratio of the sodium fluosilicate to the water-soluble silicon phosphate to the disodium dihydrogen pyrophosphate to the anhydrous ethanol to the 3-isocyanatopropyl trimethoxysilane is 20:45:50:70:9.
Step3, preparation of component A
The specific formula of the component A comprises the following components in parts by weight:
100 parts of sodium water glass solution,
9 Parts of water-soluble polymer,
50 Parts of sepiolite supported cross-linking agent,
4 Parts of tetrahydroxyethyl ethylenediamine,
4 Parts of 1,3, 5-tris (2-hydroxyethyl) cyanuric acid,
30 Parts of pentaerythritol,
Triethanolamine 8 parts,
0.9 Part of magnesium aluminum silicate,
1 Part of triethylene diamine,
1 Part of 2-hydroxy-N, N, N-trimethyl-1-propylamine formate,
1.1 Parts of potassium oleate,
3 Parts of sodium lignin sulfonate,
0.5 Part of polyether-siloxane copolymer,
55 Parts of deionized water;
In the sodium water glass solution, the mass fraction of sodium metasilicate is 35wt%, and the modulus of the sodium metasilicate is 3.5;
The water-soluble polymer is polyvinyl alcohol;
According to the specific formula of the component A in parts by weight, deionized water, polyether-siloxane copolymer, sodium lignin sulfonate, potassium oleate, 2-hydroxy-N, N, N-trimethyl-1-propylamine formate, triethylene diamine, triethanolamine, pentaerythritol and sepiolite load cross-linking agent are placed into a dry double-planetary stirrer, stirring and dispersing are carried out for 14 hours under the conditions of controlling stirring speed to be 110 r/min and dispersing speed to be 7500 r/min, then tetraethyl ethylenediamine, 1,3, 5-tris (2-hydroxyethyl) cyanuric acid and sodium silicate solution are added, stirring and dispersing are continued for 7 hours, then water-soluble polymer is added, stirring and dispersing are continued for 5 hours, magnesium aluminum silicate is added, stirring and dispersing are continued for 5 hours, mixed material liquid is obtained, and after vacuum defoaming, the mixed material liquid is filled into a plastic packaging barrel, and the component A is obtained.
Step 4, preparation of the component B
The specific formula of the component B comprises the following components in parts by weight:
140 parts of isocyanate,
20 Parts of composite powder curing agent,
25 Parts of organic ester curing agent,
0.3 Parts of polyether-siloxane copolymer;
The isocyanate is diphenylmethane diisocyanate;
The organic ester curing agent is 1, 2-ethane tricarboxylic acid triethyl ester;
According to the specific formula of the component B in parts by weight, isocyanate, a composite powder curing agent, an organic ester curing agent and a polyether-siloxane copolymer are placed into a dry double-planetary stirrer, stirring and dispersing are carried out for 20 hours under the conditions of controlling stirring speed to 110 revolutions per minute and dispersing speed to 7500 revolutions per minute, and the component B is obtained after vacuum defoamation, filling into a dry plastic packaging barrel and nitrogen protection.
Example 4: organic-inorganic composite grouting material for road repair and reinforcement
Step1, preparation of sepiolite load cross-linking agent
Example 1 the same procedure as in example 1 was followed except that the crosslinker, triglycerol, was replaced by 2-hydroxybutylamine in equal amounts.
Step 2 was performed as in example 1;
Step 3 the procedure is as in example 1;
step 4, preparation of the component B
Example 1 the same procedure as in example 1 was followed except that the organic ester curative glyceryl triacetate was replaced with dimethyl oxalate.
Example 5: organic-inorganic composite grouting material for road repair and reinforcement
Step1, preparation of sepiolite load cross-linking agent
Example 1 the same procedure as in example 1 was followed except that the crosslinker, triglycerol, was replaced by 1, 2-ethylene glycol diacetate.
Step 2 was performed as in example 1;
Step 3 the procedure is as in example 1;
step 4, preparation of the component B
Example 1 the same procedure as in example 1 was followed except that the organic ester curative glyceryl triacetate was replaced with dimethyl succinate.
Example 6: organic-inorganic composite grouting material for road repair and reinforcement
Steps 1, 2, 3 are the same as in example 1;
step 4, preparation of the component B
Example 1 the same procedure as in example 1 was followed except that the organic ester curative glyceryl triacetate was replaced with dimethyl malonate.
Example 7: organic-inorganic composite grouting material for road repair and reinforcement
Steps 1, 2, 3 are the same as in example 1;
step 4, preparation of the component B
Example 1 the same procedure as in example 1 was followed except that the organic ester curative glyceryl triacetate was replaced with diethyl malonate.
Example 8: organic-inorganic composite grouting material for road repair and reinforcement
Steps 1, 2, 3 are the same as in example 1;
step 4, preparation of the component B
Example 1 the same procedure as in example 1 was followed except that the organic ester curative glyceryl triacetate was replaced with methyl carbamate in equal amounts.
Comparative example 1: based on the example 1, the preparation of the sepiolite load cross-linking agent in the step 1 is not carried out, 29 parts of the sepiolite load cross-linking agent is replaced by 29 parts of sepiolite in the preparation of the component A in the step 3, the specific operation is as follows:
step 1, preparing sepiolite load cross-linking agent is not carried out;
step 2 was performed as in example 1;
Step3, preparation of component A
In the specific formulation of the component A, 29 parts of sepiolite-supported crosslinking agent was replaced with 29 parts of sepiolite in equal amount, and the other operations were the same as in example 1;
Step 4 was performed as in example 1.
Comparative example 2: based on the example 1, the preparation of the composite powder curing agent in the step 2 is not carried out, and in the preparation of the component B in the step 4, 17 parts of the composite powder curing agent are replaced by 17 parts of isocyanate in equal quantity, and the specific operation is as follows:
step 1 the procedure is as in example 1;
step 2, preparing a composite powder curing agent is not carried out;
Step 3 the procedure is as in example 1;
step 4, preparation of the component B
The procedure of example 1 was repeated except that 17 parts of the composite powder curing agent was replaced with 17 parts of isocyanate in equal amounts.
Comparative example 3: based on the example 1, in the preparation of the component 4 and the component B, the organic ester curing agent is not added, 19 parts of the organic ester curing agent is replaced by 19 parts of isocyanate in equal quantity, and the specific operation is as follows:
steps 1, 2, 3 are the same as in example 1;
step 4, preparation of the component B
The same procedure as in example 1 was repeated except that 19 parts of the organic ester curing agent was replaced with 19 parts of isocyanate in equal amounts.
Performance test:
The organic-inorganic composite grouting materials for road repair and reinforcement obtained in examples 1,2, 3, 4, 5, 6, 7 and 8 and comparative examples 1,2 and 3 were mixed in a mass ratio of 1:1 for grouting, and the fluidity, setting time, compressive strength, freeze thawing expansion rate and other performance indexes were tested by referring to Highway engineering Cement and Cement concrete test procedure (JTGE-2005), highway subgrade and base floor polymer grouting reinforcement technical procedure (SZ-G-B04-2007) and Highway engineering inorganic binder stabilization Material test procedure (JTGE-2009), and specific test data are shown in Table 1;
TABLE 1
As can be seen from the data in table 1, the sepiolite in comparative example 1 is not loaded with the cross-linking agent, the fluidity of the grouting material is slightly deteriorated, the initial setting time is slightly prolonged, the final setting time delay is obvious, the compressive strength is obviously reduced, and the freeze-thawing expansion rate is obviously increased, which means that after the sepiolite is loaded with the cross-linking agent, the rate of the solidification reaction of the grouting material can be increased, and the mechanical strength and the freeze-thawing resistance of the solidified body of the grouting material can be obviously improved; in comparative example 2, the fluidity is improved, the initial setting time and the final setting time are greatly prolonged, the mechanical strength and the freeze thawing expansion rate are reduced to the worst, and the fluidity is influenced by the composite powder curing agent, but the mechanical property and the freeze thawing resistance of the grouting material are improved effectively; the comparative example 3, in which no organic ester curing agent is added, has no influence on fluidity, prolongs initial setting time and final setting time to the greatest extent, and remarkably reduces mechanical properties and freeze-thaw resistance, shows that the organic ester curing agent has a great influence on the curing rate of grouting material, and has an important improving effect on the compressive strength and freeze-thaw resistance of the grouting material cured body.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (3)
1. An organic-inorganic composite grouting material for repairing and reinforcing a road is characterized in that:
the organic-inorganic composite grouting material for road repair and reinforcement consists of a component A and a component B, wherein the component A and the component B are mixed according to the mass ratio of 1:0.8-1.3 during grouting;
The specific formula of the component A comprises the following components in parts by weight:
70-100 parts of sodium water glass solution,
2-9 Parts of water-soluble polymer,
25-50 Parts of sepiolite-loaded cross-linking agent,
1-4 Parts of tetrahydroxyethyl ethylenediamine,
1-4 Parts of 1,3, 5-tri (2-hydroxyethyl) cyanuric acid,
10-30 Parts of pentaerythritol,
2-8 Parts of triethanolamine,
0.3 To 0.9 part of magnesium aluminum silicate,
0.3 To 1 part of triethylenediamine,
0.5-1 Part of 2-hydroxy-N, N, N-trimethyl-1-propylamine formate,
0.5 To 1.1 parts of potassium oleate,
0.5-3 Parts of sodium lignin sulfonate,
0.1 To 0.5 part of polyether-siloxane copolymer,
35-55 Parts of deionized water;
In the sodium water glass solution, the mass fraction of sodium metasilicate is 15-35 wt%, and the modulus of the sodium metasilicate is 1.5-3.5;
the water-soluble polymer is one of polyvinyl alcohol and polyethyleneimine;
the specific formula of the component B comprises the following components in parts by weight:
100-140 parts of isocyanate,
10-20 Parts of composite powder curing agent,
15-25 Parts of organic ester curing agent,
0.1-0.3 Parts of polyether-siloxane copolymer;
the isocyanate is one of toluene diisocyanate and diphenylmethane diisocyanate;
The organic ester curing agent is one of triacetin, 3-hydroxy-3-carboxyl tributyl glutarate, 1, 2-ethane triethyl tricarboxylic acid, dimethyl oxalate, dimethyl succinate, dimethyl malonate, diethyl malonate and methyl carbamate;
The sepiolite load cross-linking agent comprises the following preparation method: drying sepiolite at 110-140 ℃ for 2-5 hours, placing the sepiolite into a thoroughly dried anhydrous vacuum sealed mixing kettle, continuously vacuumizing to maintain the pressure in the kettle at minus 0.095 to minus 0.1MPa, keeping negative pressure for 18-26 hours, sucking the cross-linking agent melted into a liquid state into a reaction kettle by virtue of the negative pressure, raising the temperature in the kettle to the melting point temperature of the cross-linking agent in advance and keeping the constant temperature, keeping the suction amount of the cross-linking agent at the lowest suction amount by taking the sepiolite in the whole immersed kettle as the minimum suction amount, standing for 18-29 hours in a sealed state at constant temperature, transferring the materials in the kettle into a sealed dry centrifuge, centrifugally separating, keeping the temperature of the materials at the melting point temperature of the cross-linking agent in the transferring and separating process, and putting the solid obtained by centrifugal separation into a dry sealed container for standby;
the particle size of the sepiolite is 20-5000 nm;
The cross-linking agent is one of triglycerin, 2-hydroxyethylamine, triisopropanolamine, 2-hydroxybutylamine and 1, 2-ethylene glycol diacetate;
The preparation method of the composite powder curing agent comprises the following steps: putting sodium fluosilicate, water-soluble silicon phosphate and disodium dihydrogen pyrophosphate into a vacuum oven, drying at 80-95 ℃ for 15-19 hours, putting into a dry ball mill, adding absolute ethyl alcohol and 3-isocyanatopropyl trimethoxysilane, ball milling to a particle size of 0.01-1 mu m, discharging to obtain slurry, and putting the slurry into the vacuum oven for drying at 60-75 ℃ for 12-18 hours to obtain a composite powder curing agent;
The mass ratio of the sodium fluosilicate to the water-soluble silicon phosphate to the disodium dihydrogen pyrophosphate to the anhydrous ethanol to the 3-isocyanatopropyl trimethoxy silane is 6-20:15-45:10-50:40-70:3-9.
2. The organic-inorganic composite grouting material for road repair reinforcement according to claim 1, wherein:
The component A comprises the following preparation methods: according to the specific formula of the component A in parts by weight, deionized water, polyether-siloxane copolymer, sodium lignin sulfonate, potassium oleate, 2-hydroxy-N, N, N-trimethyl-1-propylamine formate, triethylene diamine, triethanolamine, pentaerythritol and sepiolite load cross-linking agent are placed into a dry double-planetary stirrer, stirring and dispersing are carried out for 8-14 hours under the conditions of controlling stirring speed to 80-110 r/min and dispersing speed to 5000-7500 r/min, then tetraethylene diamine, 1,3, 5-tris (2-hydroxyethyl) cyanuric acid and sodium water glass solution are added, stirring and dispersing are carried out for 4-7 hours continuously, then water-soluble polymer is added, stirring and dispersing are carried out continuously for 2-5 hours, magnesium aluminum silicate is added, stirring and dispersing are carried out continuously for 3-5 hours, mixed liquid is obtained, and the mixed liquid is filled into a plastic packaging barrel after vacuum defoaming, so that the component A is obtained.
3. The organic-inorganic composite grouting material for road repair reinforcement according to claim 1, wherein:
The component B comprises the following preparation methods: according to the specific formula of the component B in parts by weight, isocyanate, a composite powder curing agent, an organic ester curing agent and a polyether-siloxane copolymer are placed into a dry double-planetary stirrer, stirring speed is controlled to be 80-110 r/min, dispersing speed is controlled to be 5000-7500 r/min, stirring and dispersing are carried out for 14-20 hours, and after vacuum defoamation, the component B is obtained by filling the components into a dry plastic packaging barrel and introducing nitrogen for protection.
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| JPH1180731A (en) * | 1997-09-16 | 1999-03-26 | Mitsui Chem Inc | Grout agent for injection into ground, and improvement of ground by using the same |
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| CN113338458A (en) * | 2021-06-09 | 2021-09-03 | 青岛蓝特尔建筑节能科技有限公司 | Flame-retardant EPS insulation board and preparation method thereof |
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2024
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| US4743673A (en) * | 1986-12-19 | 1988-05-10 | Tyndale Plains-Hunter, Ltd. | Hydrophilic carboxy polyurethanes |
| US6248697B1 (en) * | 1997-02-12 | 2001-06-19 | Kb Technologies, Ltd. | Composition and method for a dual-function soil-grouting excavating or boring fluid |
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| KR101284603B1 (en) * | 2012-11-19 | 2013-07-10 | 주식회사 에코이앤씨 | Method of repairing and reinforcing cross section of concrete structures |
| CN111943601A (en) * | 2020-08-19 | 2020-11-17 | 瑞洲建设集团有限公司 | Building engineering external wall heat insulation material and preparation method thereof |
| CN112877045A (en) * | 2021-01-12 | 2021-06-01 | 中国石油大学(华东) | Bulk-swelling efficient slug gel plugging agent and preparation method thereof |
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