CN114105542A - Waterproof self-repairing material for building and preparation method thereof - Google Patents
Waterproof self-repairing material for building and preparation method thereof Download PDFInfo
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- CN114105542A CN114105542A CN202111550366.2A CN202111550366A CN114105542A CN 114105542 A CN114105542 A CN 114105542A CN 202111550366 A CN202111550366 A CN 202111550366A CN 114105542 A CN114105542 A CN 114105542A
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- Prior art keywords
- agent
- repairing material
- waterproof self
- water
- building
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- 239000000463 material Substances 0.000 title claims abstract description 47
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 68
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 49
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000004567 concrete Substances 0.000 claims abstract description 34
- 244000005700 microbiome Species 0.000 claims abstract description 28
- 239000004568 cement Substances 0.000 claims abstract description 27
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 25
- 239000012802 nanoclay Substances 0.000 claims abstract description 20
- 239000010881 fly ash Substances 0.000 claims abstract description 19
- 239000008394 flocculating agent Substances 0.000 claims abstract description 16
- 239000004927 clay Substances 0.000 claims abstract description 14
- 239000002994 raw material Substances 0.000 claims abstract description 14
- 230000003750 conditioning effect Effects 0.000 claims abstract description 13
- 229920001046 Nanocellulose Polymers 0.000 claims abstract description 12
- 239000000017 hydrogel Substances 0.000 claims abstract description 12
- 239000005543 nano-size silicon particle Substances 0.000 claims abstract description 12
- 229910021487 silica fume Inorganic materials 0.000 claims abstract description 12
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 12
- 239000002893 slag Substances 0.000 claims abstract description 12
- 239000002253 acid Substances 0.000 claims abstract description 11
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 28
- 238000002156 mixing Methods 0.000 claims description 19
- 239000000203 mixture Substances 0.000 claims description 18
- 239000001963 growth medium Substances 0.000 claims description 17
- 239000012190 activator Substances 0.000 claims description 15
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 claims description 14
- 229920002472 Starch Polymers 0.000 claims description 14
- 235000015278 beef Nutrition 0.000 claims description 14
- 239000000284 extract Substances 0.000 claims description 14
- 239000008103 glucose Substances 0.000 claims description 14
- 239000011780 sodium chloride Substances 0.000 claims description 14
- 239000008107 starch Substances 0.000 claims description 14
- 235000019698 starch Nutrition 0.000 claims description 14
- 239000002002 slurry Substances 0.000 claims description 13
- 241000186361 Actinobacteria <class> Species 0.000 claims description 11
- 241000894006 Bacteria Species 0.000 claims description 11
- 241000233866 Fungi Species 0.000 claims description 11
- 239000004576 sand Substances 0.000 claims description 11
- 239000002609 medium Substances 0.000 claims description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 9
- 230000008439 repair process Effects 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 7
- 239000004615 ingredient Substances 0.000 claims description 7
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims description 7
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims description 7
- 239000012779 reinforcing material Substances 0.000 claims description 7
- 239000008223 sterile water Substances 0.000 claims description 7
- 229920002678 cellulose Polymers 0.000 claims description 4
- 239000001913 cellulose Substances 0.000 claims description 4
- 239000003513 alkali Substances 0.000 claims description 3
- 229960000892 attapulgite Drugs 0.000 claims description 3
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 3
- GVALZJMUIHGIMD-UHFFFAOYSA-H magnesium phosphate Chemical compound [Mg+2].[Mg+2].[Mg+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O GVALZJMUIHGIMD-UHFFFAOYSA-H 0.000 claims description 3
- 239000004137 magnesium phosphate Substances 0.000 claims description 3
- 229960002261 magnesium phosphate Drugs 0.000 claims description 3
- 229910000157 magnesium phosphate Inorganic materials 0.000 claims description 3
- 235000010994 magnesium phosphates Nutrition 0.000 claims description 3
- 239000011707 mineral Substances 0.000 claims description 3
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 3
- 229910052625 palygorskite Inorganic materials 0.000 claims description 3
- 229920005646 polycarboxylate Polymers 0.000 claims description 3
- 235000019353 potassium silicate Nutrition 0.000 claims description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 13
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 12
- 230000000694 effects Effects 0.000 description 9
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 8
- 238000010276 construction Methods 0.000 description 7
- 239000011148 porous material Substances 0.000 description 6
- 235000010333 potassium nitrate Nutrition 0.000 description 6
- 230000036571 hydration Effects 0.000 description 5
- 238000006703 hydration reaction Methods 0.000 description 5
- 230000003487 anti-permeability effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000000499 gel Substances 0.000 description 4
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 4
- 235000019341 magnesium sulphate Nutrition 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000004570 mortar (masonry) Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000007836 KH2PO4 Substances 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 239000000378 calcium silicate Substances 0.000 description 2
- 229910052918 calcium silicate Inorganic materials 0.000 description 2
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 2
- 239000011083 cement mortar Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000002207 metabolite Substances 0.000 description 2
- 235000010755 mineral Nutrition 0.000 description 2
- 229910000402 monopotassium phosphate Inorganic materials 0.000 description 2
- 235000019796 monopotassium phosphate Nutrition 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- GNSKLFRGEWLPPA-UHFFFAOYSA-M potassium dihydrogen phosphate Chemical compound [K+].OP(O)([O-])=O GNSKLFRGEWLPPA-UHFFFAOYSA-M 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- 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 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- CQBLUJRVOKGWCF-UHFFFAOYSA-N [O].[AlH3] Chemical compound [O].[AlH3] CQBLUJRVOKGWCF-UHFFFAOYSA-N 0.000 description 1
- OBNDGIHQAIXEAO-UHFFFAOYSA-N [O].[Si] Chemical compound [O].[Si] OBNDGIHQAIXEAO-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- -1 aluminum ions Chemical class 0.000 description 1
- 239000002956 ash Substances 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
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000013538 functional additive Substances 0.000 description 1
- 238000007306 functionalization reaction Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000001117 sulphuric acid Substances 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- 238000004078 waterproofing 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
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/06—Quartz; Sand
- C04B14/062—Microsilica, e.g. colloïdal silica
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/10—Clay
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/38—Polysaccharides or derivatives thereof
- C04B24/383—Cellulose or derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/06—Aluminous cements
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/34—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing cold phosphate binders
-
- 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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/02—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding chemical blowing agents
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/10—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by using foaming agents or by using mechanical means, e.g. adding preformed foam
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N1/00—Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
- C12N1/14—Fungi; Culture media therefor
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N1/00—Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
- C12N1/20—Bacteria; Culture media therefor
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- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
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- 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
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/40—Porous or lightweight materials
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- 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
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- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
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- Chemical Kinetics & Catalysis (AREA)
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- Biotechnology (AREA)
- Inorganic Chemistry (AREA)
- Medicinal Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Tropical Medicine & Parasitology (AREA)
- Biomedical Technology (AREA)
- Virology (AREA)
- Microbiology (AREA)
- Civil Engineering (AREA)
- General Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Botany (AREA)
- Dispersion Chemistry (AREA)
- Mycology (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a building waterproof self-repairing material and a preparation method thereof, wherein the building waterproof self-repairing material comprises the following raw materials in percentage by mass: 10-15% of cement, 15-25% of silica fume, 10-15% of fly ash, 15-20% of slag, 1-5% of nano silicon dioxide, 1-3% of nano clay, 1-3% of clay conditioning agent, 1-3% of nano cellulose, 2-5% of hydrogel, 0.3-1% of pore-forming agent, 0.3-0.5% of polycarboxylic acid water reducing agent, 0.3-0.5% of flocculating agent, 0.3-0.5% of air entraining agent, 3-5% of alkaline exciting agent, 0.01-0.03% of microorganism and the balance of water. The building waterproof self-repairing material can prevent water from permeating into a concrete building in the field of daily buildings, can perform self-repairing under the condition that water has permeated in the concrete building, and has the advantages of good stability, early strength, high hardening speed and excellent mechanical property.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to a building waterproof self-repairing material and a preparation method thereof.
Background
Concrete is a porous structure material formed by mixing a cementing material, aggregates (coarse aggregates and fine aggregates) and water to perform chemical reaction. In modern construction work, when penetration of the building surface into the water fails. Water can penetrate through holes and cracks of reinforced concrete, so that reinforcing steel bars in a concrete structure are corroded, back penetration is caused, subsequent maintenance can only be carried out on partial plugging of the back surface or internal prevention can be carried out again, but service life damage of the reinforced concrete caused by external waterproof failure cannot be compensated.
Compared with the foreign advanced technology, the integral technology of the building waterproof self-repairing material in China has certain gap, mainly including poor construction performance, backward matched construction technology, low integral strength and relatively poor durability. At present, the core of most building waterproof materials is to form a waterproof layer on the surface of common concrete, and form a strong waterproof and hydrophobic structure through the waterproof coating on the surface of the common concrete, so as to isolate external water, harmful liquid and the like. When the concrete meets water, the water cannot permeate into the internal porous structure of the concrete building, and the internal reinforcing steel bars cannot be corroded. Or adding a crystalline substance when the concrete is mixed, so that the concrete is internally crystallized when hardened, and the internal porous structure is filled, so that external water cannot permeate, and the aim of preventing water is fulfilled.
Secondly, in the waterproof process of the concrete building, whether the concrete structure damaged by water seepage in the waterproof process is subjected to secondary crystallization or not can be judged, so that the self-repairing function of the building material is achieved. The self-repairing capability of the existing building waterproof material can be weakened along with the aging of time. The invention introduces a microbial waterproof method to achieve the aim of waterproofing and even repairing the material. Is also an important point of the present invention.
However, most waterproof coatings or permeable crystallization methods are easy to age, have poor environmental protection performance and poor compatibility with concrete matrixes, and are not suitable for long-term development of the building waterproof industry.
Therefore, the comprehensive performance research of the building waterproof self-repairing material needs to consider the self composition of the building waterproof composition material and the water repellent agent, and also needs to consider the construction method and the influence of the construction environment. Therefore, the comprehensive performance of the building waterproof self-repair is regulated and controlled in a multi-component cooperation mode, and corresponding formula design and optimization are carried out, so that the building waterproof self-repair is good in stability, excellent in working performance, high in mechanical strength, excellent in durability and controllable in cost, and has very important significance and value for building of building engineering.
Disclosure of Invention
In order to overcome the defects of related products in the prior art, the invention provides a building waterproof self-repairing material and a preparation method thereof, which can prevent water from permeating into a concrete building in the field of daily buildings, can perform self-repairing under the condition that water has permeated in the concrete building, and have the advantages of good stability, early strength, high hardness and excellent mechanical property.
The invention provides a building waterproof self-repairing material and a preparation method thereof, wherein the building waterproof self-repairing material comprises the following raw materials in percentage by mass: 10-15% of cement, 15-25% of silica fume, 10-15% of fly ash, 15-20% of slag, 1-5% of nano silicon dioxide, 1-3% of nano clay, 1-3% of clay conditioning agent, 1-3% of nano cellulose, 2-5% of hydrogel, 0.3-1% of pore-forming agent, 0.3-0.5% of polycarboxylic acid water reducing agent, 0.3-0.5% of flocculating agent, 0.3-0.5% of air entraining agent, 3-5% of alkaline exciting agent, 0.01-0.03% of microorganism and the balance of water.
In certain embodiments of the invention, the microorganisms include fungi, bacteria, actinomycetes, and the ingredients are as follows (g/L): starch: 10, glucose: 10, beef extract: 5, KNO 3: 0.5, NaCl: 0.5, KH2PO 4: 2, MgSO 4: 0.5, FeSO4 & 7H 2O: 0.005, pH 7, and 500ml of sterile water, and placing the mixture into a shaking table at 30 ℃ to shake for 5d to prepare a culture medium of the microorganism, namely a modified CAZPECK DOX-medium culture medium.
In certain embodiments of the invention, the cement is one of a sulphoaluminate cement or a magnesium phosphate cement.
In certain embodiments of the invention, the fly ash is a class C fly ash having a CaO content of greater than 10%.
In certain embodiments of the invention, the river sand consists of 35-45% by mass of medium sand with a particle size of 0.5-0.25mm and 55-65% by mass of fine sand with a particle size of less than 0.075 mm.
In some embodiments of the invention, the clay conditioning agent is one of attapulgite or montmorillonite minerals with a particle size of 300 mesh.
In certain embodiments of the invention, the nanocellulose is extracted from the plant by treatment with sulphuric acid.
In some embodiments of the invention, the water reducing agent is a powdery high-performance polycarboxylate water reducing agent, and the water reducing rate of the water reducing agent is more than or equal to 20%, the gas content of the water reducing agent is less than or equal to 5%, and the 1d strength ratio of the water reducing agent is more than or equal to 160%.
In some embodiments of the present invention, the alkali-activator is a mixture of water glass and granular sodium hydroxide.
The invention also provides a preparation method of the building waterproof self-repairing material, which is applied to any one of the above steps:
s1, mixing the following ingredients (g/L): starch: 10, glucose: 10, beef extract: 5, KNO 3: 0.5, NaCl: 0.5, KH2PO 4: 2, MgSO 4: 0.5, FeSO4 & 7H 2O: 0.005, pH 7, mixing with 500ml sterile water, shaking in 30 deg.C shaking table for 5d to obtain culture medium of microorganism, modified CAZPECK DOX-medium culture medium;
s2, stirring the raw materials in percentage by mass in a stirrer for 1-2 min, and uniformly mixing to obtain a dry mixture;
s3, adding water, a water reducing agent, a flocculating agent, an antifreezing agent, an air entraining agent and an alkaline activator into the dry mixture prepared in the step S2, mixing and stirring for 2-5 min until the mixture has good fluidity, and preparing slurry;
s4, adding the microorganisms in the culture medium prepared in the step S1 into the slurry prepared in the step S3;
s5, pouring the slurry prepared in the step S4 into a mold, vibrating uniformly, finishing and plastering, and standing for forming to obtain a blank;
and S6, placing the blank prepared in the step S5 in a curing box, curing, and demolding to obtain the waterproof self-repairing material for the building.
Compared with the prior art, the invention has the following advantages:
1. the invention designs the proportioning range of the powder material according to the hydration activity enhancement principle, and a compact blank with good water resistance can be obtained after curing and forming. The prepared waterproof self-repairing material for the building has good fluidity, the 1d compressive strength is more than or equal to 30MPa, the 28d compressive strength is more than or equal to 50MPa, and the anti-permeability grade is P10.
2. The nano-cellulose used in the invention is nano-scale natural fiber obtained by purifying plant fiber with sulfuric acid. The nano-porous water-retaining agent contains more nano-pores under the microscale, and can realize the internal maintenance effect of water retention and water storage.
3. The invention has good daily construction performance, small shrinkage, strong stability and excellent durability.
4. The nano-silica adopted by the invention has extremely strong pozzolanic activity, crystal nucleus effect and micro-aggregate filling effect, and can effectively fill the internal pores of concrete when being added into the concrete, so that the compactness of the concrete is improved, and the mechanical property and the durability of the concrete are enhanced.
5. The nano clay adopted by the invention is a material with a multi-layer laminated sheet structure, and is formed by mixing two layers of silicon-oxygen tetrahedrons with one layer of aluminum-oxygen octahedrons, and the nano material generally has extremely large specific surface area and surface energy, so that the dispersed nano clay can be fully adsorbed on the surfaces of cement and sand after being mixed with mortar. The 'micro-aggregate effect' of the nano clay can not only fill multiple harmful pores with large pore diameters, but also fill micro harmful pores with small pore diameters, so that the mortar is more compact. Achieving the functions of water prevention and repair. Moreover, aluminum ions in the aluminum oxyanion constituting the nano clay are easily replaced by low-valent cations (such as calcium, potassium, sodium and the like) in the surrounding cement hydration environment, so the nano clay surface can present negative charges, free calcium ions in the cement hydration environment can take the nano clay adsorbed on the cement and sand surfaces as a template and form hydrated calcium silicate gel (C-S-H) with free silicon due to the mutual attraction of heterogeneous charges, the hydrated calcium silicate gel is a main product of cement hydration and directly influences the performance of cement mortar, the gel generated by the nano clay template polymerization effect is obviously regular compared with the gel in the common mortar, and the strength of the cement mortar modified by the nano clay can also be obviously improved.
6. The invention adopts a microorganism (bacteria, fungi and actinomycetes) method to improve the waterproof performance of the concrete building, and the microorganism cell sap and metabolites play a role of a binder in the concrete curing process, so that the microorganism cell sap and the metabolites generate adhesive force on small holes inside the concrete, reduce the porosity inside the concrete and further improve the waterproof performance of the concrete building.
7. According to the invention, by adopting a mixed compounding technology, a clay conditioning agent and nano-cellulose hydrogel are introduced into a concrete system to adjust the anti-dispersion performance of the concrete system, functional additives such as a water reducing agent and a flocculating agent are added, and the volcanic ash activity of fly ash and the volcanic activity of nano-silica are excited by cement hydration and an alkaline excitant to form the underwater concrete repair reinforcing material, so that the underwater concrete repair reinforcing material not only meets the better stability of waterproof concrete, but also improves the setting performance, the mechanical toughness and the durability of the material in a severe environment, and the concrete self-repairing material with good anti-permeability, high early mechanical strength and excellent durability is prepared, can better resist water permeation and self-repair in daily buildings and reach higher strength in the early stage, is very suitable for quick repair and maintenance of daily building engineering, plays a role in building engineering and realizes functionalization and high-value of the product at the same time, has good economic benefit.
Detailed Description
The invention provides a building waterproof self-repairing material which comprises the following raw materials in percentage by mass: 10-15% of cement, 15-25% of silica fume, 10-15% of fly ash, 15-20% of slag, 1-5% of nano silicon dioxide, 1-3% of nano clay, 1-3% of clay conditioning agent, 1-3% of nano cellulose, 2-5% of hydrogel, 0.3-1% of pore-forming agent, 0.3-0.5% of polycarboxylic acid water reducing agent, 0.3-0.5% of flocculating agent, 0.3-0.5% of air entraining agent, 3-5% of alkaline exciting agent, 0.01-0.03% of microorganism and the balance of water.
The microorganism comprises fungi, bacteria and actinomycetes, and the following ingredients (g/L) are prepared: starch: 10, glucose: 10, beef extract: 5, KNO 3: 0.5, NaCl: 0.5, KH2PO 4: 2, MgSO 4: 0.5, FeSO4 & 7H 2O: 0.005, pH 7, and 500ml of sterile water, and placing the mixture into a shaking table at 30 ℃ to shake for 5d to prepare a culture medium of the microorganism, namely a modified CAZPECK DOX-medium culture medium.
The cement is one of sulphoaluminate cement or magnesium phosphate cement.
The fly ash is C-grade fly ash, and the CaO content is more than 10%.
The river sand comprises, by mass, 35-45% of medium sand with the particle size of 0.5-0.25mm and 55-65% of fine sand with the particle size of less than 0.075 mm.
The clay conditioning agent is one of attapulgite or montmorillonite minerals with the particle size of 300 meshes.
The nano-cellulose is obtained by treating and extracting plants with sulfuric acid.
The water reducing agent is a powdery high-performance polycarboxylate water reducing agent, and has a water reducing rate of more than or equal to 20%, gas content of less than or equal to 5% and a 1d strength ratio of more than or equal to 160%.
The alkali activator is prepared by mixing water glass and granular sodium hydroxide.
The invention also provides a preparation method of the building waterproof self-repairing material applied to any one of the embodiments, which comprises the following steps:
s1, mixing the following ingredients (g/L): starch: 10, glucose: 10, beef extract: 5, KNO 3: 0.5, NaCl: 0.5, KH2PO 4: 2, MgSO 4: 0.5, FeSO4 & 7H 2O: 0.005, pH 7, mixing with 500ml sterile water, shaking in 30 deg.C shaking table for 5d to obtain culture medium of microorganism, modified CAZPECK DOX-medium culture medium;
s2, stirring the raw materials in percentage by mass in a stirrer for 1-2 min, and uniformly mixing to obtain a dry mixture;
s3, adding water, a water reducing agent, a flocculating agent, an antifreezing agent, an air entraining agent and an alkaline activator into the dry mixture prepared in the step S2, mixing and stirring for 2-5 min until the mixture has good fluidity, and preparing slurry;
s4, adding the microorganisms in the culture medium prepared in the step S1 into the slurry prepared in the step S3;
s5, pouring the slurry prepared in the step S4 into a mold, vibrating uniformly, finishing and plastering, and standing for forming to obtain a blank;
and S6, placing the blank prepared in the step S5 in a curing box, curing, and demolding to obtain the waterproof self-repairing material for the building.
Several examples of the building waterproof self-repairing material of the present invention are given below, and the above method is exemplified by the examples.
Example 1
The material comprises the following raw materials in percentage by mass: 10% of cement, 15% of silica fume, 10% of fly ash, 15% of slag, 1% of nano silicon dioxide, 1% of nano clay, 1% of clay conditioning agent, 1% of nano cellulose, 2% of hydrogel, 0.3% of pore-forming agent, 0.3% of polycarboxylic acid water reducing agent, 0.3% of flocculating agent, 0.3% of air entraining agent, 3% of alkaline activator, 0.01% of microorganism (fungi, bacteria and actinomycetes) (g/L), 10% of starch, 10% of glucose, 5% of beef extract, 0.5% of KNO3, 0.5% of NaCl, 0.5% of KH2PO4, 2% of MgSO4, 0.5% of FeSO 4.7H 2O, and the balance of water, wherein the sum of the mass percentages of the components is 100%.
The preparation process comprises the following steps:
s1, mixing the following ingredients (g/L): starch: 10, glucose: 10, beef extract: 5, KNO 3: 0.5, NaCl: 0.5, KH2PO 4: 2, MgSO 4: 0.5, FeSO4 & 7H 2O: 0.005, pH 7, and 500ml of sterile water, and then placing the mixture into a shaking table at 30 ℃ for 5 days. A modified CAZPECK DOX-medium culture medium commonly used for microorganisms is prepared.
S2, stirring cement, silica fume, fly ash, slag, nano silicon dioxide, nano clay and the like in a stirrer for 1-2 min, and uniformly mixing to obtain a dry mixture;
s3, adding water, a water reducing agent, a flocculating agent, an antifreezing agent, an air entraining agent and an alkaline activator into the dry mixture prepared in the step S2, mixing and stirring for 2-5 min until the mixture has good fluidity, and preparing slurry;
s4, adding the microorganisms in the culture medium prepared in the step S1 into the slurry prepared in the step S3;
s5, pouring the slurry prepared in the step S4 into a mold, vibrating uniformly, finishing and plastering, and standing for forming to obtain a blank;
and S6, placing the blank prepared in the step S5 in a curing box, curing, and demolding to obtain the waterproof self-repairing material for the building.
Example 2
The waterproof self-repairing material for the building and the preparation method thereof comprise the following raw materials in percentage by mass:
12% of cement, 17% of silica fume, 12% of fly ash, 17% of slag, 2% of nano silicon dioxide, 2% of nano clay, 2% of clay conditioning agent, 2% of nano cellulose, 3% of hydrogel, 0.4% of pore-forming agent, 0.4% of polycarboxylic acid water reducing agent, 0.4% of flocculating agent, 0.4% of air entraining agent, 4% of alkaline activator, 0.01% -0.03% of microorganism (fungi, bacteria and actinomycetes) (g/L) ((g/L): 10% of starch, 10% of glucose, 5% of beef extract, 0.5% of KNO3, 0.5% of NaCl, 0.5% of KH2PO 4: 2, MgSO 4: 0.5% of FeSO 4.7H 2O: 0.005)) and the balance of water, wherein the sum of the mass percentages of the components is 100%.
The preparation procedure was the same as in example 1.
Example 3
The waterproof self-repairing material for the building and the preparation method thereof comprise the following raw materials in percentage by mass:
15% of cement, 19% of silica fume, 13% of fly ash, 18% of slag, 2% of nano silicon dioxide, 2% of nano clay, 3% of clay conditioning agent, 3% of nano cellulose, 4% of hydrogel, 0.5% of pore-forming agent, 0.5% of polycarboxylic acid water reducing agent, 0.5% of flocculating agent, 0.2% of air entraining agent, 5% of alkaline activator, 0.01% -0.03% of microorganism (fungi, bacteria and actinomycetes) (g/L) ((g/L): 10% of starch, 10% of glucose, 5% of beef extract, 0.5% of KNO3, 0.5% of NaCl, 0.5% of KH2PO 4: 2, MgSO 4: 0.5% of FeSO 4.7H 2O: 0.005)) and the balance of water, wherein the sum of the mass percentages of the components is 100%.
The preparation procedure was the same as in example 1.
Example 4
The waterproof self-repairing material for the building and the preparation method thereof comprise the following raw materials in percentage by mass:
12% of cement, 20% of silica fume, 14% of fly ash, 19% of slag, 3% of nano silicon dioxide, 3% of nano clay, 2% of clay conditioning agent, 2% of nano cellulose, 4% of hydrogel, 0.8% of pore-forming agent, 0.4% of polycarboxylic acid water reducing agent, 0.4% of flocculating agent, 0.3% of air entraining agent, 5% of alkaline activator, 0.01% -0.03% of microorganism (fungi, bacteria and actinomycetes) (g/L) ((g/L): 10% of starch, 10% of glucose, 5% of beef extract, 0.5% of KNO3, 0.5% of NaCl, 0.5% of KH2PO 4: 2, 0.5% of MgSO4, 0.5% of FeSO 4.7H 2O: 0.005)), and the balance of water, wherein the sum of the mass percentages of the components is 100%.
The preparation procedure was the same as in example 1.
Example 5
The waterproof self-repairing material for the building and the preparation method thereof comprise the following raw materials in percentage by mass:
15% of cement, 25% of silica fume, 15% of fly ash, 20% of slag, 5% of nano silicon dioxide, 3% of nano clay, 3% of clay conditioning agent, 3% of nano cellulose, 5% of hydrogel, 1% of pore-forming agent, 0.5% of polycarboxylic acid water reducing agent, 0.5% of flocculating agent, 0.5% of air entraining agent, 5% of alkaline activator, 0.01% -0.03% of microorganism (fungi, bacteria and actinomycetes) (g/L) ((g/L): 10% of starch, 10% of glucose, 5% of beef extract, 0.5% of KNO3, 0.5% of NaCl, 0.5% of KH2PO 4: 2, 0.5% of MgSO4, 0.005% of FeSO 4.7H 2O), and the balance of water, wherein the sum of the mass percentages of the components is 100%.
The preparation procedure was the same as in example 1.
Comparative example 1
The waterproof self-repairing material for the building and the preparation method thereof comprise the following raw materials in percentage by mass:
15% of cement, 25% of silica fume, 15% of fly ash, 20% of slag, 5% of nano silicon dioxide, 3% of nano clay, 3% of nano cellulose, 5% of hydrogel, 1% of pore-forming agent, 0.5% of polycarboxylic acid water reducing agent, 0.5% of flocculating agent, 0.5% of air entraining agent, 5% of alkaline activator, 0.01% -0.03% of microorganism (fungi, bacteria and actinomycetes) ((g/L): 10% of starch, 10% of glucose, 5% of beef extract, 0.5% of KNO3, 0.5% of NaCl, 0.5% of KH2PO4, 2% of MgSO4, 0.5% of FeSO 4.7H 2O: 0.005)) and the balance of water, wherein the sum of the mass percentages of the components is 100%.
The preparation procedure was the same as in example 1.
Comparative example 2
The waterproof self-repairing material for the building and the preparation method thereof comprise the following raw materials in percentage by mass: 15% of cement, 25% of silica fume, 15% of fly ash, 20% of slag, 5% of nano silicon dioxide, 3% of nano clay, 5% of hydrogel, 1% of pore-forming agent, 0.5% of polycarboxylic acid water reducing agent, 0.5% of flocculating agent, 0.5% of air entraining agent, 5% of alkaline activator, 0.01% -0.03% of microorganism (fungi, bacteria and actinomycetes) (g/L) (starch: 10, glucose: 10, beef extract: 5, KNO 3: 0.5, NaCl: 0.5, KH2PO 4: 2, MgSO 4: 0.5, FeSO 4.7H 2O: 0.005)) and the balance of water, wherein the sum of the mass percentages of the components is 100%.
The preparation procedure was the same as in example 1.
The building waterproof self-repairing material prepared in the embodiments 1 to 5 of the invention is subjected to performance index tests such as compressive strength, initial setting (final setting) time, anti-permeability grade and the like, and the test results are shown in table 1.
TABLE 1 Performance index test results of the self-repairing materials prepared in examples 1 to 7 in the construction mode
As can be seen from the table, the compressive strength of the repair reinforcing material prepared in the example exceeds 50MPa in 28 days. The concrete repairing and reinforcing material prepared by the method has the characteristics of high mechanical strength and excellent stability. Comparative examples 1 and 2 lack clay conditioner and nanocellulose and alkali activator components, respectively. As can be seen from the results in Table 1, the mechanical properties of the concrete repair reinforcing material are obviously reduced and the anti-permeability grade is reduced after the concrete repair reinforcing material lacks the related components. And the workability of the slurry was also found to be deteriorated during the preparation process.
Those not described in detail in this specification are within the skill of the art. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing detailed description, or equivalent changes may be made in some of the features of the embodiments. All equivalent structures made by using the content of the specification of the invention can be directly or indirectly applied to other related technical fields, and are also within the protection scope of the patent of the invention.
Claims (10)
1. A waterproof self-repairing material for buildings is characterized by comprising: the raw materials comprise the following components in percentage by mass: 10-15% of cement, 15-25% of silica fume, 10-15% of fly ash, 15-20% of slag, 1-5% of nano silicon dioxide, 1-3% of nano clay, 1-3% of clay conditioning agent, 1-3% of nano cellulose, 2-5% of hydrogel, 0.3-1% of pore-forming agent, 0.3-0.5% of polycarboxylic acid water reducing agent, 0.3-0.5% of flocculating agent, 0.3-0.5% of air entraining agent, 3-5% of alkaline exciting agent, 0.01-0.03% of microorganism and the balance of water.
2. The waterproof self-repairing material for buildings according to claim 1, characterized in that: the microorganism comprises fungi, bacteria and actinomycetes, and the following ingredients (g/L) are prepared: starch: 10, glucose: 10, beef extract: 5, KNO 3: 0.5, NaCl: 0.5, KH2PO 4: 2, MgSO 4: 0.5, FeSO4 & 7H 2O: 0.005, pH 7, and 500ml of sterile water, and placing the mixture into a shaking table at 30 ℃ to shake for 5d to prepare a culture medium of the microorganism, namely a modified CAZPECK DOX-medium culture medium.
3. The waterproof self-repairing material for buildings according to claim 1, characterized in that: the cement is one of sulphoaluminate cement or magnesium phosphate cement.
4. The building waterproof self-repairing concrete repair reinforcing material of claim 1, characterized in that: the fly ash is C-grade fly ash, and the CaO content is more than 10%.
5. The waterproof self-repairing material for buildings according to claim 1, characterized in that: the river sand comprises, by mass, 35-45% of medium sand with the particle size of 0.5-0.25mm and 55-65% of fine sand with the particle size of less than 0.075 mm.
6. The underwater building waterproof self-repairing material of claim 1, wherein: the clay conditioning agent is one of attapulgite or montmorillonite minerals with the particle size of 300 meshes.
7. The underwater building waterproof self-repairing material of claim 1, wherein: the nano-cellulose is obtained by treating and extracting plants with sulfuric acid.
8. The waterproof self-repairing material for buildings according to claim 1, characterized in that: the water reducing agent is a powdery high-performance polycarboxylate water reducing agent, and has a water reducing rate of more than or equal to 20%, gas content of less than or equal to 5% and a 1d strength ratio of more than or equal to 160%.
9. The waterproof self-repairing material for buildings according to claim 1, characterized in that: the alkali activator is prepared by mixing water glass and granular sodium hydroxide.
10. The preparation method of the building waterproof self-repairing material applied to any one of claims 1 to 9 is characterized by comprising the following steps:
s1, mixing the following ingredients (g/L): starch: 10, glucose: 10, beef extract: 5, KNO 3: 0.5, NaCl: 0.5, KH2PO 4: 2, MgSO 4: 0.5, FeSO4 & 7H 2O: 0.005, pH 7, mixing with 500ml sterile water, shaking in 30 deg.C shaking table for 5d to obtain culture medium of microorganism, modified CAZPECK DOX-medium culture medium;
s2, stirring the raw materials in percentage by mass in a stirrer for 1-2 min, and uniformly mixing to obtain a dry mixture;
s3, adding water, a water reducing agent, a flocculating agent, an antifreezing agent, an air entraining agent and an alkaline activator into the dry mixture prepared in the step S2, mixing and stirring for 2-5 min until the mixture has good fluidity, and preparing slurry;
s4, adding the microorganisms in the culture medium prepared in the step S1 into the slurry prepared in the step S3;
s5, pouring the slurry prepared in the step S4 into a mold, vibrating uniformly, finishing and plastering, and standing for forming to obtain a blank;
and S6, placing the blank prepared in the step S5 in a curing box, curing, and demolding to obtain the waterproof self-repairing material for the building.
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| CN116003044A (en) * | 2022-05-11 | 2023-04-25 | 北京漏邦房屋修缮工程有限公司 | High-strength impervious grouting material and preparation method and use method thereof |
| CN116003071A (en) * | 2022-12-06 | 2023-04-25 | 中铁十七局集团有限公司 | Anti-dispersion clay-thioaluminate grouting material for karst tunnel moving water blocking and preparation method thereof |
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