CN117185701A - Preparation method of self-repairing anti-cracking, anti-corrosion, rust-resistant and waterproof material for concrete - Google Patents
Preparation method of self-repairing anti-cracking, anti-corrosion, rust-resistant and waterproof material for concrete Download PDFInfo
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- CN117185701A CN117185701A CN202311466289.1A CN202311466289A CN117185701A CN 117185701 A CN117185701 A CN 117185701A CN 202311466289 A CN202311466289 A CN 202311466289A CN 117185701 A CN117185701 A CN 117185701A
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- 239000004567 concrete Substances 0.000 title claims abstract description 76
- 239000000463 material Substances 0.000 title claims abstract description 47
- 238000005260 corrosion Methods 0.000 title claims abstract description 42
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 238000005336 cracking Methods 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title claims abstract description 26
- 238000003756 stirring Methods 0.000 claims abstract description 63
- 239000002243 precursor Substances 0.000 claims abstract description 44
- 239000002002 slurry Substances 0.000 claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000007788 liquid Substances 0.000 claims abstract description 35
- 238000002156 mixing Methods 0.000 claims abstract description 32
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims abstract description 30
- -1 alkyl quaternary ammonium salt Chemical class 0.000 claims abstract description 27
- XUJNEKJLAYXESH-REOHCLBHSA-N L-Cysteine Chemical compound SC[C@H](N)C(O)=O XUJNEKJLAYXESH-REOHCLBHSA-N 0.000 claims abstract description 26
- 239000002270 dispersing agent Substances 0.000 claims abstract description 21
- WRMNZCZEMHIOCP-UHFFFAOYSA-N 2-phenylethanol Chemical compound OCCC1=CC=CC=C1 WRMNZCZEMHIOCP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000008367 deionised water Substances 0.000 claims abstract description 20
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 20
- 238000009396 hybridization Methods 0.000 claims abstract description 17
- 235000013878 L-cysteine Nutrition 0.000 claims abstract description 13
- 239000004201 L-cysteine Substances 0.000 claims abstract description 13
- BAERPNBPLZWCES-UHFFFAOYSA-N (2-hydroxy-1-phosphonoethyl)phosphonic acid Chemical compound OCC(P(O)(O)=O)P(O)(O)=O BAERPNBPLZWCES-UHFFFAOYSA-N 0.000 claims abstract description 12
- SNCJAJRILVFXAE-UHFFFAOYSA-N 9h-fluorene-2,7-diamine Chemical compound NC1=CC=C2C3=CC=C(N)C=C3CC2=C1 SNCJAJRILVFXAE-UHFFFAOYSA-N 0.000 claims abstract description 12
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000010881 fly ash Substances 0.000 claims abstract description 12
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims abstract description 9
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims abstract description 7
- 150000003839 salts Chemical class 0.000 claims abstract description 7
- 159000000007 calcium salts Chemical class 0.000 claims abstract description 6
- NIXOWILDQLNWCW-UHFFFAOYSA-N Acrylic acid Chemical compound OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229920002125 Sokalan® Polymers 0.000 claims abstract description 4
- 229960001631 carbomer Drugs 0.000 claims abstract description 4
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 16
- 239000004115 Sodium Silicate Substances 0.000 claims description 12
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 12
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 12
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 claims description 9
- 229910052782 aluminium Inorganic materials 0.000 claims description 9
- 229910001424 calcium ion Inorganic materials 0.000 claims description 9
- 229910052742 iron Inorganic materials 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 9
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 7
- 239000001110 calcium chloride Substances 0.000 claims description 7
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 7
- PVFSDGKDKFSOTB-UHFFFAOYSA-K iron(3+);triacetate Chemical compound [Fe+3].CC([O-])=O.CC([O-])=O.CC([O-])=O PVFSDGKDKFSOTB-UHFFFAOYSA-K 0.000 claims description 7
- 239000004111 Potassium silicate Substances 0.000 claims description 6
- NNHHDJVEYQHLHG-UHFFFAOYSA-N potassium silicate Chemical compound [K+].[K+].[O-][Si]([O-])=O NNHHDJVEYQHLHG-UHFFFAOYSA-N 0.000 claims description 6
- 235000019353 potassium silicate Nutrition 0.000 claims description 6
- 229910052913 potassium silicate Inorganic materials 0.000 claims description 6
- DFQPZDGUFQJANM-UHFFFAOYSA-M tetrabutylphosphanium;hydroxide Chemical compound [OH-].CCCC[P+](CCCC)(CCCC)CCCC DFQPZDGUFQJANM-UHFFFAOYSA-M 0.000 claims description 6
- YMBCJWGVCUEGHA-UHFFFAOYSA-M tetraethylammonium chloride Chemical compound [Cl-].CC[N+](CC)(CC)CC YMBCJWGVCUEGHA-UHFFFAOYSA-M 0.000 claims description 6
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 claims description 5
- OKIZCWYLBDKLSU-UHFFFAOYSA-M N,N,N-Trimethylmethanaminium chloride Chemical compound [Cl-].C[N+](C)(C)C OKIZCWYLBDKLSU-UHFFFAOYSA-M 0.000 claims description 4
- 229910021578 Iron(III) chloride Inorganic materials 0.000 claims description 3
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 3
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 3
- 239000000920 calcium hydroxide Substances 0.000 claims description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 3
- 239000001506 calcium phosphate Substances 0.000 claims description 3
- 229910000389 calcium phosphate Inorganic materials 0.000 claims description 3
- 235000011010 calcium phosphates Nutrition 0.000 claims description 3
- 229960002413 ferric citrate Drugs 0.000 claims description 3
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 3
- NPFOYSMITVOQOS-UHFFFAOYSA-K iron(III) citrate Chemical compound [Fe+3].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NPFOYSMITVOQOS-UHFFFAOYSA-K 0.000 claims description 3
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 claims description 3
- DEZDKWLZZLEVST-UHFFFAOYSA-N tetrabutyl(hydroxy)-$l^{5}-phosphane Chemical compound CCCCP(O)(CCCC)(CCCC)CCCC DEZDKWLZZLEVST-UHFFFAOYSA-N 0.000 abstract description 7
- 238000004078 waterproofing Methods 0.000 abstract description 4
- 230000000903 blocking effect Effects 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 27
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 21
- 238000012360 testing method Methods 0.000 description 16
- 238000005303 weighing Methods 0.000 description 10
- BCKXLBQYZLBQEK-KVVVOXFISA-M Sodium oleate Chemical group [Na+].CCCCCCCC\C=C/CCCCCCCC([O-])=O BCKXLBQYZLBQEK-KVVVOXFISA-M 0.000 description 9
- 239000002245 particle Substances 0.000 description 9
- 239000000377 silicon dioxide Substances 0.000 description 9
- 235000012239 silicon dioxide Nutrition 0.000 description 9
- 229940085237 carbomer-980 Drugs 0.000 description 7
- 239000000047 product Substances 0.000 description 7
- 230000007797 corrosion Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 5
- 238000010276 construction Methods 0.000 description 5
- 238000004132 cross linking Methods 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 230000035515 penetration Effects 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 description 1
- 238000010668 complexation reaction Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000035876 healing Effects 0.000 description 1
- 239000004574 high-performance concrete Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 150000002505 iron Chemical class 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- 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
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Aftertreatments Of Artificial And Natural Stones (AREA)
Abstract
The application relates to the technical field of concrete waterproofing, and in particular discloses a preparation method of a self-repairing anti-cracking, anti-corrosion, rust-resistant and waterproof material for concrete, which comprises the following steps: s1: uniformly mixing calcium salt, ferric salt, aluminum salt and hybridization solution to prepare a precursor solution; the hybridization solution is prepared by adopting a method comprising the following steps: 1) Evenly mixing alkyl quaternary ammonium salt, phenethyl alcohol and deionized water to prepare intermediate liquid; 2) Adding carbomer into the intermediate liquid for several times, and stirring to obtain a viscous state; s2: adding water, silicate, silica sol, triethanolamine, fly ash, 2, 7-diaminofluorene, tetrabutyl phosphorus hydroxide, hydroxyethylidene diphosphonic acid, L-cysteine and a dispersing agent into a stirring kettle according to parts by weight, and uniformly mixing to obtain slurry; s3: slowly adding the precursor solution into the slurry, and stirring for 1-2 h. The self-repairing anti-cracking, anti-corrosion and rust-resistant waterproof material for concrete has good self-repairing, waterproof and corrosive medium permeation blocking effects.
Description
Technical Field
The application relates to the technical field of concrete waterproofing, in particular to a preparation method of a self-repairing anti-cracking, anti-corrosion, rust-resistant and waterproof material for concrete.
Background
The concrete is a main structural material of the building engineering and has the characteristics of high strength and high loading force. Concrete is a heterogeneous porous material, and the inside of the material is provided with a plurality of fine pores, so that in practical application, the concrete is in various environments for a long time, and the concrete is often damaged to different degrees, so that a penetration phenomenon occurs. The penetration can reduce the performance of the concrete, and external corrosive media can enter the concrete more easily, so that the service life and the use effect of the concrete are affected. In contrast, in the proportion of concrete, engineering personnel can add a waterproofing agent to enable the concrete to be more compact and inhibit the permeation phenomenon of the concrete, so that the waterproofing agent material plays a very important role in the construction engineering.
At present, the concrete waterproof material comprises two types of powder and liquid, the powder waterproof agent has great pollution to the environment, and has adverse effects on the strength and the durability of a concrete main body, and the performance of the traditional liquid waterproof agent is not ideal, so that the construction requirement can not be well met. In order to further improve the performance of the waterproof material, technicians develop self-repairing type concrete waterproof materials, such as inorganic aluminum salt waterproof agents, and the waterproof repairing mechanism is to act with calcium aluminate hydrate in cement to generate double salt calcium sulfoaluminate crystals with certain expansibility, so that capillary pores of a concrete structure are filled, and migration of moisture and corrosive media is prevented. And if the water-proof composite material is compounded with organic silicon resin, grease and inorganic materials, a methyl silicone ether waterproof film with waterproof performance is formed in the concrete, and meanwhile, a certain degree of shrinkage compensation effect is achieved, so that the waterproof and impervious performance of the concrete is improved.
For the self-repairing concrete waterproof material, the improvement on the waterproof and impervious properties of the concrete is less, and the requirements of special construction application environments cannot be met, so that how to develop the high-performance concrete self-repairing waterproof material is a technical problem to be solved by technicians.
Disclosure of Invention
The application provides a preparation method of a self-repairing anti-cracking, anti-corrosion and rust-resistant waterproof material for concrete, which aims to further improve the performance of the self-repairing waterproof material for concrete.
The application provides a preparation method of a self-repairing anti-cracking, anti-corrosion, rust-resistant and waterproof material for concrete, which adopts the following technical scheme:
a preparation method of a self-repairing anti-cracking, anti-corrosion, anti-rust and waterproof material for concrete comprises the following steps:
s1: uniformly mixing calcium salt, ferric salt, aluminum salt and hybridization solution to obtain a precursor solution, wherein the molar ratio of calcium ions to iron ions to aluminum ions in the precursor solution of the composite salt is (0.05-0.065): (0.1-0.15): 1;
the hybridization solution is prepared by adopting a method comprising the following steps:
1) Evenly mixing alkyl quaternary ammonium salt, phenethyl alcohol and deionized water to prepare intermediate liquid;
2) Adding carbomer into the intermediate solution, stirring at 80-100deg.C to obtain viscous state;
s2: adding 80-100 parts of water, 20-30 parts of silicate, 4-6 parts of silica sol, 3.5-5 parts of triethanolamine, 0.5-1 part of fly ash, 0.5-1.2 parts of 2, 7-diaminofluorene, 0.5-1 part of tetrabutyl phosphonium hydroxide, 0.35-0.5 part of hydroxyethylidene diphosphonic acid, 0.1-0.2 part of L-cysteine and 1-2 parts of dispersing agent into a stirring kettle, and uniformly mixing to prepare slurry;
s3: slowly adding the precursor solution into the slurry, and stirring for 1-2h at 40-55deg.C.
Further preferably, in the step S1, the alkyl quaternary ammonium salt is one of tetramethyl ammonium chloride and tetraethyl ammonium chloride.
Further preferably, in the step S1, the obtained hybrid solution has a viscosity of 50000 to 70000 mPas.
Further preferably, in the step S3, the mass ratio of the precursor solution to the slurry is (0.1-0.25): 1.
Further preferably, in the step S2, the silicate is one or more of sodium silicate, potassium silicate and aluminum silicate.
Further preferably, in the step S2, the silicate is composed of sodium silicate, potassium silicate and aluminum silicate in a mass ratio of 2.3:0.8:1.
Further preferably, in the step S1, the calcium salt is one or more of calcium phosphate, calcium hydroxide and calcium chloride.
Further preferably, in the step S1, the iron salt is one or more of ferric citrate, ferric acetate and ferric chloride.
Further preferably, in the step S1, the aluminum salt is one or more of aluminum sulfate and aluminum chloride.
The self-repairing anti-cracking corrosion-resistant waterproof material for concrete provided by the application can be used in special construction environments such as bridges, dykes, roads and coastal construction engineering, has good self-repairing, waterproof and corrosive medium permeation-resistant effects, can delay and inhibit corrosion of a reinforcing steel bar structure in the concrete, and prolongs the service life and the use effect of a main concrete structure.
In summary, the application has the following beneficial effects:
the application adopts calcium salt, ferric salt and aluminum salt as compound salts, and then the compound salts are compounded with hybridization solution to form a hybridization system, in the hybridization system, alkyl quaternary ammonium salt, phenethyl alcohol and carbomer construct a similar homogeneous space network structure under the assistance of water molecules, and metal ions of the compound salts are dispersed and chelated in the similar homogeneous space network structure to form an inorganic crosslinking framework. Then slowly adding the precursor liquid into the slurry, absorbing a part of components in the slurry by the quasi-homogeneous space network structure and the inorganic cross-linking framework in the precursor liquid under the concentration polarization effect, and simultaneously forming a cage-shaped interpenetrating bridge by the 2, 7-diaminofluorene, tetrabutyl phosphonium hydroxide, hydroxyethylidene diphosphonic acid and L-cysteine components in the slurry in the quasi-homogeneous space network structure and the inorganic cross-linking framework, thereby greatly delaying the loss of the internal components.
In the use process, components which are not absorbed by the similar homogeneous phase space network structure and the inorganic crosslinking framework in the slurry can react with gel materials which are not hydrated in the concrete to form compact insoluble crystals, so that capillary pores and micro cracks in the concrete are blocked, and the compactness and waterproof and impervious performances of the concrete are improved. The precursor liquid containing the slurry components can be uniformly diffused into the concrete along with the penetration of water molecules, and is changed from disordered phase to ordered phase to be distributed in the concrete along with the dehydration and solidification of the concrete, and meanwhile, a part of the slurry components are sealed. When the concrete is subjected to the infiltration and corrosion of water and corrosive medium, the concrete is converted from ordered phase to disordered phase under the action of water molecules, the slurry component is released, and the slurry component is combined with the water and corrosive medium which permeate into the concrete, so that newly generated micro cracks can be plugged again, the micro cracks with the thickness of about 0.4mm can be repaired, and self-repair and healing are realized.
In addition, thermodynamic stability difference can be generated in the transition process of the ordered phase and the disordered phase, and under the assistance of the internal thrust of the difference, the 2, 7-diaminofluorene, tetrabutyl phosphonium hydroxide, hydroxyethylidene diphosphonic acid and L-cysteine components can form complexation with a corrosion medium, so that the corrosion resistance to corrosion ions such as chloride ions and the like is improved.
Drawings
Fig. 1: self-healing test data for the test concrete samples of inventive examples 1-3 and comparative examples 1-6 are shown.
Fig. 2: water absorption test data for the test concrete samples of inventive examples 1-3 and comparative examples 1-6 are shown schematically.
Detailed Description
The present application will be described in further detail with reference to examples.
The raw materials of the examples and comparative examples of the present application are commercially available in general except for the specific descriptions.
Examples
Example 1
The preparation method of the self-repairing anti-cracking, anti-corrosion, rust-resistant and waterproof material for concrete comprises the following steps:
s1: placing 7.15g of calcium chloride, 23.4g of ferric acetate, 133.3g of aluminum chloride and 1.5L of hybridization solution into a stirring kettle, mixing for 1.5h at a stirring speed of 150rpm to obtain a precursor solution, and controlling the molar ratio of calcium ions, iron ions and aluminum ions in the precursor solution to be 0.065:0.1:1;
the hybrid solution of the embodiment is prepared by a method comprising the following steps:
1) Uniformly mixing 30g of tetraethylammonium chloride, 50g of phenethyl alcohol and 500g of deionized water in a beaker to prepare an intermediate solution;
2) Controlling the temperature of the intermediate liquid to 80 ℃, adding carbomer 980 into the intermediate liquid for a small amount of times while stirring, stopping adding until the viscosity is 70000 mPas, and continuing stirring for 20min to obtain the product;
s2: weighing 10kg of deionized water, 2kg of sodium silicate, 0.6kg of silica sol, 0.35kg of triethanolamine, 0.1kg of primary fly ash, 0.12kg of 2, 7-diaminofluorene, 0.05kg of tetrabutyl phosphorus hydroxide, 0.035kg of hydroxyethylidene diphosphonic acid, 0.02kg of L-cysteine and 0.2kg of dispersing agent according to the weight, adding into a stirring kettle, and uniformly mixing at the constant temperature of 25 ℃ and the stirring speed of 300rpm to prepare slurry;
s3: slowly adding the precursor liquid into the slurry at a dropping speed of 35mL/min, wherein the mass ratio of the precursor liquid to the slurry is 0.1:1, and stirring for 1h at the temperature of 55 ℃.
Wherein the silica sol is alkaline silica sol, the content of silicon dioxide is 25%, and the average particle size is 120nm. The dispersing agent is sodium oleate.
The self-repairing anti-cracking, anti-corrosion, rust-resistant and waterproof material for concrete is prepared by the preparation method.
Example 2
The preparation method of the self-repairing anti-cracking, anti-corrosion, rust-resistant and waterproof material for concrete comprises the following steps:
s1: 7g of calcium phosphate, 24.33g of ferric chloride, 342.15g of aluminum sulfate and 3L of hybridization solution are placed in a stirring kettle, and mixed for 1.5h at a stirring speed of 150rpm to prepare a precursor solution, wherein the molar ratio of calcium ions, iron ions and aluminum ions in the precursor solution is controlled to be 0.05:0.15:1;
the hybrid solution of the embodiment is prepared by a method comprising the following steps:
1) Uniformly mixing 30g of tetramethyl ammonium chloride, 50g of phenethyl alcohol and 500g of deionized water in a beaker to prepare an intermediate solution;
2) Controlling the temperature of the intermediate liquid to be 100 ℃, adding carbomer 980 into the intermediate liquid for a small amount of times while stirring, stopping adding until the viscosity is 50000 mPa.s, and continuing stirring for 20min to obtain the product;
s2: weighing 8kg of deionized water, 3kg of potassium silicate, 0.4kg of silica sol, 0.5kg of triethanolamine, 0.05kg of primary fly ash, 0.05kg of 2, 7-diaminofluorene, 0.1kg of tetrabutyl phosphorus hydroxide, 0.05kg of hydroxyethylidene diphosphonic acid, 0.01kg of L-cysteine and 0.1kg of dispersing agent according to weight, adding into a stirred tank, and uniformly mixing at the constant temperature of 25 ℃ at the stirring speed of 300rpm to prepare slurry;
s3: slowly adding the precursor solution into the slurry at a dropping speed of 35mL/min, wherein the mass ratio of the precursor solution to the slurry is 0.25:1, and stirring for 1h at the temperature of 55 ℃.
Wherein the silica sol is alkaline silica sol, the content of silicon dioxide is 25%, and the average particle size is 120nm. The dispersing agent is sodium oleate.
The self-repairing anti-cracking, anti-corrosion, rust-resistant and waterproof material for concrete is prepared by the preparation method.
Example 3
The preparation method of the self-repairing anti-cracking, anti-corrosion, rust-resistant and waterproof material for concrete comprises the following steps:
s1: placing 4.07g of calcium hydroxide, 29.4g of ferric citrate, 133.3g of aluminum chloride and 2.5L of hybridization solution into a stirring kettle, mixing for 1.5h at a stirring speed of 150rpm to obtain a precursor solution, and controlling the molar ratio of calcium ions, iron ions and aluminum ions in the precursor solution to be 0.055:0.12:1;
the hybrid solution of the embodiment is prepared by a method comprising the following steps:
1) Uniformly mixing 30g of tetramethyl ammonium chloride, 50g of phenethyl alcohol and 500g of deionized water in a beaker to prepare an intermediate solution;
2) Controlling the temperature of the intermediate liquid to be 100 ℃, adding carbomer 980 into the intermediate liquid for a small amount of times while stirring, stopping adding until the viscosity is 55000 mPa.s, and continuing stirring for 20min to obtain the product;
s2: 9.5kg of deionized water, 2.5kg of silicate, 0.5kg of silica sol, 0.5kg of triethanolamine, 0.075kg of primary fly ash, 0.1kg of 2, 7-diaminofluorene, 0.08kg of tetrabutyl phosphonium hydroxide, 0.046kg of hydroxyethylidene diphosphonic acid, 0.015kg of L-cysteine and 0.2kg of dispersing agent are weighed according to the weight, added into a stirred tank, and uniformly mixed at a constant temperature of 25 ℃ and a stirring speed of 300rpm to prepare slurry;
s3: slowly adding the precursor solution into the slurry at a dropping speed of 35mL/min, wherein the mass ratio of the precursor solution to the slurry is 0.25:1, and stirring for 1h at the temperature of 55 ℃.
Wherein the silica sol is alkaline silica sol, the content of silicon dioxide is 25%, and the average particle size is 120nm. The dispersing agent is sodium oleate. The silicate consists of sodium silicate, potassium silicate and aluminum silicate according to the mass ratio of 2.3:0.8:1.
The self-repairing anti-cracking, anti-corrosion, rust-resistant and waterproof material for concrete is prepared by the preparation method.
Comparative example
Comparative example 1
The preparation method of the self-repairing anti-cracking, anti-corrosion, anti-rust and waterproof material for concrete of the comparative example comprises the following steps: weighing 10kg of deionized water, 2kg of sodium silicate, 0.6kg of silica sol, 0.35kg of triethanolamine, 0.1kg of primary fly ash, 0.12kg of 2, 7-diaminofluorene, 0.05kg of tetrabutyl phosphorus hydroxide, 0.035kg of hydroxyethylidene diphosphonic acid, 0.02kg of L-cysteine and 0.2kg of dispersing agent according to the weight, adding into a stirring kettle, keeping the temperature at 25 ℃ and uniformly mixing at the stirring speed of 300 rpm.
Wherein the silica sol is alkaline silica sol, the content of silicon dioxide is 25%, and the average particle size is 120nm. The dispersing agent is sodium oleate.
The self-repairing anti-cracking, anti-corrosion, rust-resistant and waterproof concrete material of the comparative example is prepared by the preparation method.
Comparative example 2
The preparation method of the self-repairing anti-cracking, anti-corrosion, anti-rust and waterproof material for concrete of the comparative example comprises the following steps:
s1: 1.5L of the hybridization solution is placed in a stirring kettle and mixed for 1.5h at a stirring speed of 150rpm to prepare a precursor solution;
the hybrid solution of the comparative example was prepared by a method comprising the steps of:
1) Uniformly mixing 30g of tetraethylammonium chloride, 50g of phenethyl alcohol and 500g of deionized water in a beaker to prepare an intermediate solution;
2) Controlling the temperature of the intermediate liquid to 80 ℃, adding carbomer 980 into the intermediate liquid for a small amount of times while stirring, stopping adding until the viscosity is 70000 mPas, and continuing stirring for 20min to obtain the product;
s2: weighing 10kg of deionized water, 2kg of sodium silicate, 0.6kg of silica sol, 0.35kg of triethanolamine, 0.1kg of primary fly ash, 0.12kg of 2, 7-diaminofluorene, 0.05kg of tetrabutyl phosphorus hydroxide, 0.035kg of hydroxyethylidene diphosphonic acid, 0.02kg of L-cysteine and 0.2kg of dispersing agent according to the weight, adding into a stirring kettle, and uniformly mixing at the constant temperature of 25 ℃ and the stirring speed of 300rpm to prepare slurry;
s3: slowly adding the precursor liquid into the slurry at a dropping speed of 35mL/min, wherein the mass ratio of the precursor liquid to the slurry is 0.1:1, and stirring for 1h at the temperature of 55 ℃.
Wherein the silica sol is alkaline silica sol, the content of silicon dioxide is 25%, and the average particle size is 120nm. The dispersing agent is sodium oleate.
The self-repairing anti-cracking, anti-corrosion, rust-resistant and waterproof concrete material of the comparative example is prepared by the preparation method.
Comparative example 3
The preparation method of the self-repairing anti-cracking, anti-corrosion, anti-rust and waterproof material for concrete of the comparative example comprises the following steps:
s1: placing 7.15g of calcium chloride, 23.4g of ferric acetate, 133.3g of aluminum chloride and 1.5L of deionized water into a stirring kettle, and mixing for 1.5h at a stirring speed of 150rpm to obtain a precursor solution, wherein the molar ratio of calcium ions to iron ions to aluminum ions in the precursor solution is controlled to be 0.065:0.1:1;
s2: weighing 10kg of deionized water, 2kg of sodium silicate, 0.6kg of silica sol, 0.35kg of triethanolamine, 0.1kg of primary fly ash, 0.12kg of 2, 7-diaminofluorene, 0.05kg of tetrabutyl phosphorus hydroxide, 0.035kg of hydroxyethylidene diphosphonic acid, 0.02kg of L-cysteine and 0.2kg of dispersing agent according to the weight, adding into a stirring kettle, and uniformly mixing at the constant temperature of 25 ℃ and the stirring speed of 300rpm to prepare slurry;
s3: slowly adding the precursor liquid into the slurry at a dropping speed of 35mL/min, wherein the mass ratio of the precursor liquid to the slurry is 0.1:1, and stirring for 1h at the temperature of 55 ℃.
Wherein the silica sol is alkaline silica sol, the content of silicon dioxide is 25%, and the average particle size is 120nm. The dispersing agent is sodium oleate.
The self-repairing anti-cracking, anti-corrosion, rust-resistant and waterproof concrete material of the comparative example is prepared by the preparation method.
Comparative example 4
The preparation method of the self-repairing anti-cracking, anti-corrosion, anti-rust and waterproof material for concrete of the comparative example comprises the following steps:
s1: placing 7.15g of calcium chloride, 23.4g of ferric acetate, 133.3g of aluminum chloride and 1.5L of hybridization solution into a stirring kettle, mixing for 1.5h at a stirring speed of 150rpm to obtain a precursor solution, and controlling the molar ratio of calcium ions, iron ions and aluminum ions in the precursor solution to be 0.065:0.1:1;
the hybrid solution of the comparative example was prepared by a method comprising the steps of:
1) Uniformly mixing 30g of ethanol and 500g of deionized water in a beaker to prepare an intermediate solution;
2) Controlling the temperature of the intermediate liquid to 80 ℃, adding carbomer 980 into the intermediate liquid for a small amount of times while stirring, stopping adding until the viscosity is 70000 mPas, and continuing stirring for 20min to obtain the product;
s2: weighing 10kg of deionized water, 2kg of sodium silicate, 0.6kg of silica sol, 0.35kg of triethanolamine, 0.1kg of primary fly ash, 0.12kg of 2, 7-diaminofluorene, 0.05kg of tetrabutyl phosphorus hydroxide, 0.035kg of hydroxyethylidene diphosphonic acid, 0.02kg of L-cysteine and 0.2kg of dispersing agent according to the weight, adding into a stirring kettle, and uniformly mixing at the constant temperature of 25 ℃ and the stirring speed of 300rpm to prepare slurry;
s3: slowly adding the precursor liquid into the slurry at a dropping speed of 35mL/min, wherein the mass ratio of the precursor liquid to the slurry is 0.1:1, and stirring for 1h at the temperature of 55 ℃.
Wherein the silica sol is alkaline silica sol, the content of silicon dioxide is 25%, and the average particle size is 120nm. The dispersing agent is sodium oleate.
The self-repairing anti-cracking, anti-corrosion, rust-resistant and waterproof concrete material of the comparative example is prepared by the preparation method.
Comparative example 5
The preparation method of the self-repairing anti-cracking, anti-corrosion, anti-rust and waterproof material for concrete of the comparative example comprises the following steps:
s1: placing 7.15g of calcium chloride, 23.4g of ferric acetate, 133.3g of aluminum chloride and 1.5L of hybridization solution into a stirring kettle, mixing for 1.5h at a stirring speed of 150rpm to obtain a precursor solution, and controlling the molar ratio of calcium ions, iron ions and aluminum ions in the precursor solution to be 0.065:0.1:1;
the hybrid solution of the comparative example was prepared by a method comprising the steps of:
1) Uniformly mixing 30g of tetraethylammonium chloride, 50g of phenethyl alcohol and 500g of deionized water in a beaker to prepare an intermediate solution;
2) Controlling the temperature of the intermediate liquid to 80 ℃, adding carbomer 980 into the intermediate liquid for a small amount of times while stirring, stopping adding until the viscosity is 70000 mPas, and continuing stirring for 20min to obtain the product;
s2: weighing 10kg of deionized water, 2kg of sodium silicate, 0.6kg of silica sol, 0.35kg of triethanolamine, 0.1kg of primary fly ash, 0.05kg of tetrabutyl phosphonium hydroxide, 0.02kg of L-cysteine and 0.2kg of dispersing agent according to weight, adding into a stirring kettle, and uniformly mixing at the constant temperature of 25 ℃ at the stirring speed of 300rpm to prepare slurry;
s3: slowly adding the precursor liquid into the slurry at a dropping speed of 35mL/min, wherein the mass ratio of the precursor liquid to the slurry is 0.1:1, and stirring for 1h at the temperature of 55 ℃.
Wherein the silica sol is alkaline silica sol, the content of silicon dioxide is 25%, and the average particle size is 120nm. The dispersing agent is sodium oleate.
The self-repairing anti-cracking, anti-corrosion, rust-resistant and waterproof concrete material of the comparative example is prepared by the preparation method.
Comparative example 6
The preparation method of the self-repairing anti-cracking, anti-corrosion, anti-rust and waterproof material for concrete of the comparative example comprises the following steps:
s1: placing 7.15g of calcium chloride, 23.4g of ferric acetate, 133.3g of aluminum chloride and 1.5L of hybridization solution into a stirring kettle, mixing for 1.5h at a stirring speed of 150rpm to obtain a precursor solution, and controlling the molar ratio of calcium ions, iron ions and aluminum ions in the precursor solution to be 0.065:0.1:1;
the hybrid solution of the comparative example was prepared by a method comprising the steps of:
1) Uniformly mixing 30g of tetraethylammonium chloride, 50g of phenethyl alcohol and 500g of deionized water in a beaker to prepare an intermediate solution;
2) Controlling the temperature of the intermediate liquid to 80 ℃, adding carbomer 980 into the intermediate liquid for a small amount of times while stirring, stopping adding until the viscosity is 70000 mPas, and continuing stirring for 20min to obtain the product;
s2: weighing 10kg of deionized water, 2kg of sodium silicate, 0.6kg of silica sol, 0.35kg of triethanolamine, 0.1kg of primary fly ash and 0.2kg of dispersing agent according to weight, adding into a stirring kettle, and uniformly mixing at a constant temperature of 25 ℃ and a stirring speed of 300rpm to prepare slurry;
s3: slowly adding the precursor liquid into the slurry at a dropping speed of 35mL/min, wherein the mass ratio of the precursor liquid to the slurry is 0.1:1, and stirring for 1h at the temperature of 55 ℃.
Wherein the silica sol is alkaline silica sol, the content of silicon dioxide is 25%, and the average particle size is 120nm. The dispersing agent is sodium oleate.
The self-repairing anti-cracking, anti-corrosion, rust-resistant and waterproof concrete material of the comparative example is prepared by the preparation method.
Performance test
The concrete self-repairing anti-cracking, anti-corrosion, rust-resistant and waterproof materials of examples 1 to 3 and comparative examples 1 to 6 are respectively taken, test concrete samples are prepared according to the mixing amount of 0.25 percent of per cubic concrete, and the mixing ratio of the test concrete samples is as follows: c50 cement, water, sand and cobble=320:190:800:950, wherein the sand is medium sand, and the cobble is crushed stone with grading of 5-20 mm.
1. Self-healing property of micro-crack
Taking a test concrete sample, pouring and curing to prepare a cube sample with the dimensions of 50mm multiplied by 50mm, loading the sample to the center of the surface by using a pressure testing machine to generate microcracks, selecting the width of 5-position test microcracks on the center surface of the sample, controlling the average width to be within 0.4mm, horizontally placing the sample in a container filled with water, curing at room temperature for 28d, testing the width of the 5-position microcracks again, taking an average value, and obtaining self-healing degree= (average width before curing-average width after curing)/average width before curing multiplied by 100%, wherein the test result is shown in figure 1.
2. Water absorption rate
Taking a test concrete sample, pouring and curing to prepare a cube sample with the size of 100mm multiplied by 100mm, putting the sample into an oven, drying, weighing to obtain initial mass, putting the dried sample into a test container, randomly selecting one side of the sample to be in contact with the water surface to serve as a test surface, smearing sealant on the other four sides, controlling the water surface height to be 4mm, taking out the sample at intervals of 1h, 3h, 5h, 10h, 24h and 36h, drying the water on the test surface, weighing, and recording as the water absorption weight at t time, wherein the water absorption rate at t time is= (the water absorption weight at t time-initial weight)/the initial weight multiplied by 100%, and the test result is shown in figure 2.
Claims (9)
1. The preparation method of the self-repairing anti-cracking, anti-corrosion, anti-rust and waterproof material for concrete is characterized by comprising the following steps:
s1: uniformly mixing calcium salt, ferric salt, aluminum salt and hybridization solution to obtain a precursor solution, wherein the molar ratio of calcium ions to iron ions to aluminum ions in the precursor solution is (0.05-0.065): (0.1-0.15): 1;
the hybridization solution is prepared by adopting a method comprising the following steps:
1) Evenly mixing alkyl quaternary ammonium salt, phenethyl alcohol and deionized water to prepare intermediate liquid;
2) Adding carbomer into the intermediate solution, stirring at 80-100deg.C to obtain viscous state;
s2: adding 80-100 parts of water, 20-30 parts of silicate, 4-6 parts of silica sol, 3.5-5 parts of triethanolamine, 0.5-1 part of fly ash, 0.5-1.2 parts of 2, 7-diaminofluorene, 0.5-1 part of tetrabutyl phosphonium hydroxide, 0.35-0.5 part of hydroxyethylidene diphosphonic acid, 0.1-0.2 part of L-cysteine and 1-2 parts of dispersing agent into a stirring kettle, and uniformly mixing to prepare slurry;
s3: slowly adding the precursor solution into the slurry, and stirring for 1-2h at 40-55deg.C.
2. The method for preparing the self-repairing anti-cracking, anti-corrosion and rust-resistant and waterproof material for concrete according to claim 1, wherein in the step S1, the alkyl quaternary ammonium salt is one of tetramethyl ammonium chloride and tetraethyl ammonium chloride.
3. The method for preparing the self-repairing anti-cracking, anti-corrosion and rust-resistant and waterproof material for concrete according to claim 1, wherein in the step S1, the viscosity of the obtained hybridization solution is 50000-70000 mPa.s.
4. The method for preparing the self-repairing anti-cracking, anti-corrosion, anti-rust and waterproof material for concrete according to claim 1, wherein in the step S3, the mass ratio of the precursor solution to the slurry is (0.1-0.25): 1.
5. The method for preparing the self-repairing anti-crack, anti-corrosion and rust-resistant and waterproof material for concrete according to claim 1, wherein in the step S2, silicate is one or more of sodium silicate, potassium silicate and aluminum silicate.
6. The method for preparing the self-repairing anti-cracking, anti-corrosion and rust-resistant and waterproof material for concrete according to claim 5, wherein in the step S2, silicate consists of sodium silicate, potassium silicate and aluminum silicate according to a mass ratio of 2.3:0.8:1.
7. The method for preparing the self-repairing anti-crack, anti-corrosion and rust-resistant and waterproof concrete material according to claim 1, wherein in the step S1, the calcium salt is one or more of calcium phosphate, calcium hydroxide and calcium chloride.
8. The method for preparing the self-repairing anti-cracking, anti-corrosion and rust-resistant and waterproof material for concrete according to claim 1, wherein in the step S1, the ferric salt is one or more of ferric citrate, ferric acetate and ferric chloride.
9. The method for preparing the self-repairing anti-crack, anti-corrosion and rust-resistant and waterproof concrete material according to claim 1, wherein in the step S1, the aluminum salt is one or more of aluminum sulfate and aluminum chloride.
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