CN113912350A - High-quality concrete based on nano bamboo fibers and preparation method thereof - Google Patents
High-quality concrete based on nano bamboo fibers and preparation method thereof Download PDFInfo
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- CN113912350A CN113912350A CN202111320830.9A CN202111320830A CN113912350A CN 113912350 A CN113912350 A CN 113912350A CN 202111320830 A CN202111320830 A CN 202111320830A CN 113912350 A CN113912350 A CN 113912350A
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- 239000000835 fiber Substances 0.000 title claims abstract description 78
- 235000017166 Bambusa arundinacea Nutrition 0.000 title claims abstract description 68
- 235000017491 Bambusa tulda Nutrition 0.000 title claims abstract description 68
- 241001330002 Bambuseae Species 0.000 title claims abstract description 68
- 235000015334 Phyllostachys viridis Nutrition 0.000 title claims abstract description 68
- 239000011425 bamboo Substances 0.000 title claims abstract description 68
- 239000004567 concrete Substances 0.000 title claims abstract description 62
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000002994 raw material Substances 0.000 claims abstract description 20
- 239000012744 reinforcing agent Substances 0.000 claims abstract description 16
- 239000004576 sand Substances 0.000 claims abstract description 16
- 239000004575 stone Substances 0.000 claims abstract description 16
- 239000000843 powder Substances 0.000 claims abstract description 15
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 12
- 239000011398 Portland cement Substances 0.000 claims abstract description 9
- 239000010881 fly ash Substances 0.000 claims abstract description 9
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 9
- 239000011707 mineral Substances 0.000 claims abstract description 9
- 239000012783 reinforcing fiber Substances 0.000 claims abstract description 7
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 42
- 238000006243 chemical reaction Methods 0.000 claims description 37
- 238000002156 mixing Methods 0.000 claims description 26
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 23
- 238000003756 stirring Methods 0.000 claims description 23
- 239000011259 mixed solution Substances 0.000 claims description 22
- 229910000420 cerium oxide Inorganic materials 0.000 claims description 18
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 claims description 18
- 239000000047 product Substances 0.000 claims description 16
- 238000001035 drying Methods 0.000 claims description 15
- 238000005406 washing Methods 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 14
- 235000019441 ethanol Nutrition 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 13
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 12
- 239000004115 Sodium Silicate Substances 0.000 claims description 10
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 10
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 10
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 9
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 claims description 8
- 238000004321 preservation Methods 0.000 claims description 8
- 238000002791 soaking Methods 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 6
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 6
- JBIROUFYLSSYDX-UHFFFAOYSA-M benzododecinium chloride Chemical compound [Cl-].CCCCCCCCCCCC[N+](C)(C)CC1=CC=CC=C1 JBIROUFYLSSYDX-UHFFFAOYSA-M 0.000 claims description 6
- QQZMWMKOWKGPQY-UHFFFAOYSA-N cerium(3+);trinitrate;hexahydrate Chemical compound O.O.O.O.O.O.[Ce+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O QQZMWMKOWKGPQY-UHFFFAOYSA-N 0.000 claims description 6
- 239000008367 deionised water Substances 0.000 claims description 6
- 229910021641 deionized water Inorganic materials 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 6
- 238000000967 suction filtration Methods 0.000 claims description 6
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 4
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 4
- 239000004917 carbon fiber Substances 0.000 claims description 4
- 239000012153 distilled water Substances 0.000 claims description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 4
- 239000005543 nano-size silicon particle Substances 0.000 claims description 4
- 229910021392 nanocarbon Inorganic materials 0.000 claims description 4
- DGVVJWXRCWCCOD-UHFFFAOYSA-N naphthalene;hydrate Chemical compound O.C1=CC=CC2=CC=CC=C21 DGVVJWXRCWCCOD-UHFFFAOYSA-N 0.000 claims description 4
- 235000012239 silicon dioxide Nutrition 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- DUIOKRXOKLLURE-UHFFFAOYSA-N 2-octylphenol Chemical compound CCCCCCCCC1=CC=CC=C1O DUIOKRXOKLLURE-UHFFFAOYSA-N 0.000 claims description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 3
- CBOCVOKPQGJKKJ-UHFFFAOYSA-L Calcium formate Chemical compound [Ca+2].[O-]C=O.[O-]C=O CBOCVOKPQGJKKJ-UHFFFAOYSA-L 0.000 claims description 3
- 239000004743 Polypropylene Substances 0.000 claims description 3
- SLINHMUFWFWBMU-UHFFFAOYSA-N Triisopropanolamine Chemical compound CC(O)CN(CC(C)O)CC(C)O SLINHMUFWFWBMU-UHFFFAOYSA-N 0.000 claims description 3
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 3
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 3
- 238000000137 annealing Methods 0.000 claims description 3
- 229940044172 calcium formate Drugs 0.000 claims description 3
- 235000019255 calcium formate Nutrition 0.000 claims description 3
- 239000004281 calcium formate Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 238000005470 impregnation Methods 0.000 claims description 3
- 238000003760 magnetic stirring Methods 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims description 3
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 3
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 3
- -1 polypropylene Polymers 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 239000002244 precipitate Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 239000011343 solid material Substances 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 230000000844 anti-bacterial effect Effects 0.000 abstract description 9
- 238000005260 corrosion Methods 0.000 abstract description 8
- 230000007797 corrosion Effects 0.000 abstract description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract description 6
- 244000005700 microbiome Species 0.000 abstract description 5
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 abstract description 4
- 239000004566 building material Substances 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 230000001580 bacterial effect Effects 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
- 239000004568 cement Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 241000588724 Escherichia coli Species 0.000 description 1
- 241000191967 Staphylococcus aureus Species 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000003623 enhancer Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 150000004968 peroxymonosulfuric acids Chemical class 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F17/00—Compounds of rare earth metals
- C01F17/10—Preparation or treatment, e.g. separation or purification
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F17/00—Compounds of rare earth metals
- C01F17/20—Compounds containing only rare earth metals as the metal element
- C01F17/206—Compounds containing only rare earth metals as the metal element oxide or hydroxide being the only anion
- C01F17/224—Oxides or hydroxides of lanthanides
- C01F17/235—Cerium oxides or hydroxides
-
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/18—Waste materials; Refuse organic
- C04B18/24—Vegetable refuse, e.g. rice husks, maize-ear refuse; Cellulosic materials, e.g. paper, cork
- C04B18/26—Wood, e.g. sawdust, wood shavings
- C04B18/265—Wood, e.g. sawdust, wood shavings from specific species, e.g. birch
-
- 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/10—Coating or impregnating
- C04B20/1018—Coating or impregnating with organic materials
- C04B20/1022—Non-macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
- C04B40/0046—Premixtures of ingredients characterised by their processing, e.g. sequence of mixing the ingredients when preparing the premixtures
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/30—Particle morphology extending in three dimensions
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00008—Obtaining or using nanotechnology related materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- 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
Abstract
The invention relates to the technical field of building material production, in particular to high-quality concrete based on nano bamboo fibers and a preparation method thereof; the high-quality concrete is prepared from the following raw materials in parts by weight: 350-380 parts of portland cement, 630-680 parts of river sand, 950-1020 parts of broken stone, 120-140 parts of fly ash, 40-55 parts of S95 mineral powder, 12-20 parts of modified nano bamboo fiber, 30-50 parts of a functional reinforcing agent, 70-90 parts of an admixture, 25-35 parts of reinforcing fiber, 5-10 parts of a water reducing agent, 6-9 parts of an early strength agent and 180-200 parts of water; the concrete prepared by the invention not only has good mechanical property, but also has certain antibacterial property and corrosion resistance, effectively reduces the corrosion of microorganisms, chloride ions and sulfate ions to the concrete, ensures the service life of the concrete and also ensures the quality of the concrete.
Description
Technical Field
The invention relates to the technical field of building material production, in particular to high-quality concrete based on nano bamboo fibers and a preparation method thereof.
Background
Concrete, referred to as "concrete (t you ng)": refers to the general name of engineering composite materials formed by cementing aggregate into a whole by cementing materials. The term concrete generally refers to cement as the cementing material and sand and stone as the aggregate; the cement concrete, also called as common concrete, is obtained by mixing with water (which may contain additives and admixtures) according to a certain proportion and stirring, and is widely applied to civil engineering.
At present, in the process of producing concrete, a person skilled in the art often adds some reinforcing fibers to improve the mechanical properties of the concrete. Such as: nano carbon fiber, steel fiber and nano bamboo fiber, but bamboo fiber macromolecule is easily decomposed by the action of acid, alkali, heat, microorganism, etc., and the antibacterial property is relatively poor. This shortens the service life to some extent and also has an adverse effect on the service life of the concrete to some extent. Moreover, the antibacterial performance and corrosion resistance of the concrete prepared by the prior art are relatively poor; after being corroded by microorganisms, chloride ions and sulfate ions for a long time, the concrete can destroy the internal structure of the concrete, and the quality and the service life of concrete buildings are influenced.
Therefore, it is an urgent technical problem to be solved by those skilled in the art to provide a high-quality concrete based on nano bamboo fibers and a preparation method thereof.
Disclosure of Invention
The invention aims to provide high-quality concrete based on nano bamboo fibers and a preparation method thereof, and the prepared concrete not only has good mechanical properties, but also has certain antibacterial property and corrosion resistance, so that the corrosion of microorganisms, chloride ions and sulfate ions to the concrete is effectively reduced, the service life of the concrete is ensured, and the quality of the concrete is also ensured.
In order to achieve the purpose, the invention provides the following technical scheme:
the high-quality concrete based on the nano bamboo fibers comprises the following raw materials in parts by weight: 350-380 parts of portland cement, 630-680 parts of river sand, 950-1020 parts of broken stone, 120-140 parts of fly ash, 40-55 parts of S95 mineral powder, 12-20 parts of modified nano bamboo fiber, 30-50 parts of a functional reinforcing agent, 70-90 parts of an admixture, 25-35 parts of reinforcing fiber, 5-10 parts of a water reducing agent, 6-9 parts of an early strength agent and 180-200 parts of water.
Further, the preparation method of the modified nano bamboo fiber comprises the following steps:
drying the nano bamboo fibers at the temperature of 80-90 ℃, soaking the nano bamboo fibers in hydrogen peroxide solution with the mass of 6-10 times and the concentration of 25-40%, and performing ultrasonic soaking treatment on the nano bamboo fibers at the temperature of 35-50 ℃ for 30-50 min; after the impregnation is finished, sequentially carrying out suction filtration, water washing and drying treatment on the mixture; storing the nano live fibers for later use;
II, transferring the dried nano bamboo fibers into a reaction kettle, adding a mixed solution with the mass 6-10 times that of the nano bamboo fibers into the reaction kettle, and slowly dropwise adding acrylic acid with the mass 3-6 times that of the nano bamboo fibers into the reaction kettle while stirring; after stirring uniformly; under the protection of nitrogen, adding ammonium persulfate with the mass of 0.8-1.5% of the mixed solution into the reaction kettle, and carrying out heat preservation reaction for 3-6 h at the temperature of 60-80 ℃; after the reaction is finished, carrying out ethanol suction filtration and washing on the mixed components obtained in the reaction kettle; and drying the obtained solid material at 50-70 ℃ to obtain the modified nano bamboo fiber finished product.
Furthermore, the mixed solution used in the step II is prepared by uniformly mixing N, N-dimethylformamide, 30-40% of distilled water, 10-18% of dodecyl dimethyl benzyl ammonium chloride and 1.5-2.8% of octyl phenol polyoxyethylene ether in terms of dosage respectively.
Further, the preparation method of the function enhancer comprises the following steps:
ultrasonically dispersing a proper amount of flower-shaped nano cerium oxide in a proper amount of deionized water according to a solid-to-liquid ratio of 0.02-0.05 g/mL; after the cerium oxide is uniformly dispersed, firstly adding sodium silicate with the mass 5-8 times of that of the flower-shaped nano cerium oxide, mixing and stirring to dissolve the sodium silicate, then adding calcium nitrate with the amount of the sodium silicate and the like, mixing and stirring to completely precipitate; and then sequentially washing the obtained product with deionized water and drying the product by a centrifugal machine to obtain the finished product of the functional reinforcing agent.
Furthermore, the preparation method of the flower-shaped nano cerium oxide comprises the following steps:
i, putting a proper amount of cerium nitrate hexahydrate into a proper amount of ethanol according to the dosage ratio of 0.01-0.03 g/mL, adding triethanolamine with the substance amount being 6-9 times of that of the cerium nitrate hexahydrate, heating to 70-80 ℃ under the action of magnetic stirring, and carrying out heat preservation reaction for 25-40 min at the temperature; after the reaction is finished, naturally cooling the mixture to room temperature, and then carrying out centrifugal separation and absolute ethyl alcohol washing for 2-3 times; marking the obtained mixture as a mixed solution;
ii, adding ethylene glycol with the mass 2 times of the ethanol dosage in the step i into the obtained mixed solution, adjusting the pH value to 8-10 by ammonia water, sealing and heating the mixed solution in a reaction kettle to 180-200 ℃, and carrying out heat preservation reaction for 30-50 hours at the temperature; and then sequentially carrying out centrifugal separation, ethanol washing for 2-3 times and drying treatment on the mixed solution after reaction, then placing the obtained solid powder in a muffle furnace, and annealing at the temperature of 600 ℃ for 1h to finally obtain the finished flower-shaped nano cerium oxide.
Furthermore, the external admixture is any one of nano silicon dioxide and nano titanium dioxide.
Furthermore, the reinforcing fiber is any one of nano carbon fiber, steel fiber and polypropylene fiber.
Furthermore, the water reducing agent is any one of a naphthalene water reducing agent and a polycarboxylic acid water reducing agent.
Furthermore, the early strength agent is any one of triethanolamine, triisopropanolamine and calcium formate.
The preparation method of the high-quality concrete based on the nano bamboo fibers comprises the following steps:
step one, weighing the raw materials according to the parts by weight, and crushing and grinding the broken stone and river sand to proper particle size; the obtained crushed stone and river sand powder are respectively stored for later use;
step two, sequentially transferring the portland cement, river sand, broken stone, fly ash, external admixture, S95 mineral powder and water into a mixing device, mixing and stirring the materials in the mixing device at a rotating speed of 250-400 r/min for 2-5 min, and after stirring is finished, marking the obtained mixture as a mixed material;
and step three, putting the rest raw materials into the mixed materials in the mixing equipment, mixing and stirring for 2-5 min, and discharging to obtain the high-quality concrete finished product of the nano bamboo fibers.
Compared with the prior art, the invention has the beneficial effects that:
1. in the invention, the nano bamboo fiber is used as a raw material, and is firstly subjected to dipping treatment by using hydrogen peroxide solution, so that the surface of the nano bamboo fiber becomes rough. And then, soaking the treated nano bamboo fiber in a mixed solution containing dodecyl dimethyl benzyl ammonium chloride, and fully and uniformly dispersing the dodecyl dimethyl benzyl ammonium chloride on the surface of the nano bamboo fiber under the action of mixing and stirring. Then, under the action of persulfuric acid, the nano bamboo fiber and acrylic acid are subjected to chemical reaction, so that the acrylic acid and the surface of the nano bamboo fiber form a three-dimensional network structure on the surface through chemical bonds, and the dodecyl dimethyl benzyl ammonium chloride is effectively fixed on the surface of the nano bamboo fiber, thereby effectively enhancing the antibacterial property of the nano bamboo fiber and prolonging the service life of the nano bamboo fiber. The nano bamboo fibers and the reinforcing fibers are mutually cooperated, so that the mechanical property of the prepared concrete can be effectively improved, and the quality of the concrete is effectively ensured.
2. The method takes the flower-shaped nano cerium oxide as a raw material, and takes the sodium silicate and the calcium nitrate as raw materials, so that the generated calcium silicate can be fully dispersed and deposited on the surface of the flower-shaped nano cerium oxide, and the function reinforcing agent consisting of the calcium silicate and the flower-shaped nano cerium oxide is finally prepared. The obtained functional reinforcing agent has small (nano-scale) particle size, so that the functional reinforcing agent can be effectively dispersed and filled in the concrete under the action of the filling effect and the volcanic ash reaction of the functional reinforcing agent, the porosity and the pore size of the concrete are effectively reduced, the capability of the concrete penetrated by chloride ions is effectively improved, the anti-corrosion performance of the concrete is enhanced, and the service life of the concrete is effectively prolonged.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The high-quality concrete based on the nano bamboo fibers comprises the following raw materials in parts by weight: 350 parts of portland cement, 630 parts of river sand, 950 parts of broken stone, 120 parts of fly ash, 40 parts of S95 mineral powder, 12 parts of modified nano bamboo fiber, 30 parts of a function reinforcing agent, 70 parts of nano silicon dioxide, 25 parts of nano carbon fiber, 5 parts of a naphthalene water reducing agent, 6 parts of triethanolamine and 180 parts of water.
The preparation method of the modified nano bamboo fiber comprises the following steps:
drying the nano bamboo fibers at the temperature of 80 ℃, soaking the nano bamboo fibers in hydrogen peroxide solution with the mass being 6 times that of the nano bamboo fibers and the concentration being 25%, and carrying out ultrasonic soaking treatment on the nano bamboo fibers at the temperature of 35 ℃ for 30 min; after the impregnation is finished, sequentially carrying out suction filtration, water washing and drying treatment on the mixture; storing the nano live fibers for later use;
II, transferring the dried nano bamboo fibers into a reaction kettle, adding a mixed solution with the mass 6 times that of the nano bamboo fibers into the reaction kettle, and slowly dropwise adding acrylic acid with the mass 3 times that of the nano bamboo fibers into the reaction kettle while stirring; after stirring uniformly; under the protection of nitrogen, adding ammonium persulfate with the mass of 0.8% of the mixed solution into the reaction kettle, and carrying out heat preservation reaction for 3 hours at the temperature of 60 ℃; after the reaction is finished, carrying out ethanol suction filtration and washing on the mixed components obtained in the reaction kettle; and drying the obtained solid material at 50 ℃ to obtain the modified nano bamboo fiber finished product.
The mixed solution used in the step II is prepared by evenly mixing N, N-dimethylformamide with 30 percent of distilled water, 10 percent of dodecyl dimethyl benzyl ammonium chloride and 1.5 percent of octyl phenol polyoxyethylene ether respectively.
The preparation method of the function reinforcing agent comprises the following steps:
ultrasonically dispersing a proper amount of flower-shaped nano cerium oxide in a proper amount of deionized water according to a solid-liquid ratio of 0.02 g/mL; after the cerium oxide is uniformly dispersed, firstly adding sodium silicate with the mass 5 times that of the flower-shaped nano cerium oxide, mixing and stirring to dissolve the sodium silicate, then adding calcium nitrate with the amount of the sodium silicate and other substances, mixing and stirring to completely precipitate; and then sequentially washing the obtained product with deionized water and drying the product by a centrifugal machine to obtain the finished product of the functional reinforcing agent.
The preparation method of the flower-shaped nano cerium oxide comprises the following steps:
i, putting a proper amount of cerium nitrate hexahydrate into a proper amount of ethanol according to the dosage ratio of 0.01g/mL, then adding triethanolamine with the substance amount being 6 times of that of the cerium nitrate hexahydrate, heating to 70 ℃ under the action of magnetic stirring, and carrying out heat preservation reaction for 25min at the temperature; after the reaction is finished, naturally cooling the mixture to room temperature, and then carrying out centrifugal separation and absolute ethyl alcohol washing for 2 times; marking the obtained mixture as a mixed solution;
ii, adding ethylene glycol with the mass 2 times of the ethanol dosage in the step i into the obtained mixed solution, adjusting the pH value to 8 by ammonia water, sealing and heating the mixed solution in a reaction kettle to 180 ℃, and preserving the temperature and reacting for 30 hours at the temperature; and then sequentially carrying out centrifugal separation, ethanol washing for 2 times and drying on the mixed solution after reaction, then placing the obtained solid powder in a muffle furnace, and carrying out annealing treatment for 1h at the temperature of 600 ℃, thus obtaining the finished flower-shaped nano cerium oxide.
The preparation method of the high-quality concrete based on the nano bamboo fibers comprises the following steps:
step one, weighing the raw materials according to the parts by weight, and crushing and grinding the broken stone and river sand to proper particle size; the obtained crushed stone and river sand powder are respectively stored for later use;
step two, sequentially transferring the portland cement, river sand, broken stone, fly ash, external admixture, S95 mineral powder and water into a mixing device, mixing and stirring the materials in the mixing device at a rotating speed of 250r/min for 2min, and after stirring is finished, marking the obtained mixture as a mixed material;
and step three, putting the rest raw materials into the mixed materials in the mixing equipment, mixing and stirring for 2min, and discharging to obtain the high-quality concrete finished product of the nano bamboo fibers.
Example 2
The main difference between this example and example 1 is that the specific mixture ratio of the raw materials is different, specifically: 350-380 parts of portland cement, 630-680 parts of river sand, 950-1020 parts of broken stone, 120-140 parts of fly ash, 40-55 parts of S95 mineral powder, 12-20 parts of modified nano bamboo fiber, 30-50 parts of functional reinforcing agent, 70-90 parts of nano titanium dioxide, 25-35 parts of steel fiber, 5-10 parts of polycarboxylic acid water reducer, 6-9 parts of triisopropanolamine and 180-200 parts of water.
Example 3
The main difference between this example and example 1 is that the specific mixture ratio of the raw materials is different, specifically: 350-380 parts of portland cement, 630-680 parts of river sand, 950-1020 parts of broken stone, 120-140 parts of fly ash, 40-55 parts of S95 mineral powder, 12-20 parts of modified nano bamboo fiber, 30-50 parts of a functional reinforcing agent, 70-90 parts of nano silicon dioxide, 25-35 parts of polypropylene fiber, 5-10 parts of a naphthalene water reducing agent, 6-9 parts of calcium formate and 180-200 parts of water.
Comparative example 1: the main differences between this embodiment and embodiment 1 are: replacing modified nano bamboo fibers with equivalent nano bamboo fibers with the same particle size grade;
comparative example 2: the main differences between this embodiment and embodiment 1 are: the raw materials do not contain a function reinforcing agent;
performance testing
The equivalent concrete provided by the experimental examples 1-3 and the comparative examples 1-2 is respectively made into cubic test pieces to be tested with the size of 150mm × 150mm × 150mm, and the related performance tests are respectively carried out on each test piece, and the obtained data are recorded in the following table:
note: 1. in the process of measuring the diffusion coefficient of the chloride ions, the equivalent concrete provided in experimental examples 1-3 and comparative examples 1-2 is respectively made into cylindrical test pieces to be tested with the size of phi 100 multiplied by 50mm, and then the cylindrical test pieces are detected by adopting corresponding detection standards;
2. the determination method of the antibacterial effect comprises the following steps: and maintaining each cubic test piece to be tested for 28 days, and then testing the antibacterial effect by using staphylococcus aureus and escherichia coli as test bacteria. The surface of the test piece is disinfected by 75% ethanol solution, and then is washed and soaked by sterile distilled water to constant weight, and then is placed in an ultra-clean transparent box body with constant temperature and constant humidity at 32 ℃ for later use. Respectively inoculating 2mL of bacterial liquid with the concentration of 105cfu/mL on the surface of each test piece, and placing a xenon lamp light source right above the test piece for irradiation. After the test piece inoculated with the bacterial liquid is irradiated for 60min, counting by using a microscope, and judging the antibacterial rate vi of the test piece according to the percentage difference with the colony number of the comparative example 2, wherein vi is (m-mi)/mx 100%; m is the number of colonies of the test piece of comparative example 3 after illumination; m (i ═ 1, 2, 3, 4, 5) represents the number of colonies after irradiation of light on the test pieces of example 1, example 2, example 3, comparative example 1 and comparative example 2, respectively.
The relevant data in the table show that the concrete prepared by the invention not only has good mechanical property, but also has certain antibacterial property and corrosion resistance, effectively reduces the corrosion of microorganisms, chloride ions and sulfate ions to the concrete, ensures the service life of the concrete and also ensures the quality of the concrete. Therefore, the concrete product produced by the invention has wider market prospect and is more suitable for popularization.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (10)
1. The high-quality concrete based on the nano bamboo fibers is characterized by comprising the following raw materials in parts by weight: 350-380 parts of portland cement, 630-680 parts of river sand, 950-1020 parts of broken stone, 120-140 parts of fly ash, 40-55 parts of S95 mineral powder, 12-20 parts of modified nano bamboo fiber, 30-50 parts of a functional reinforcing agent, 70-90 parts of an admixture, 25-35 parts of reinforcing fiber, 5-10 parts of a water reducing agent, 6-9 parts of an early strength agent and 180-200 parts of water.
2. The high-quality concrete based on nano bamboo fibers as claimed in claim 1, wherein the preparation method of the modified nano bamboo fibers comprises the following steps:
drying the nano bamboo fibers at the temperature of 80-90 ℃, soaking the nano bamboo fibers in hydrogen peroxide solution with the mass of 6-10 times and the concentration of 25-40%, and performing ultrasonic soaking treatment on the nano bamboo fibers at the temperature of 35-50 ℃ for 30-50 min; after the impregnation is finished, sequentially carrying out suction filtration, water washing and drying treatment on the mixture; storing the nano live fibers for later use;
II, transferring the dried nano bamboo fibers into a reaction kettle, adding a mixed solution with the mass 6-10 times that of the nano bamboo fibers into the reaction kettle, and slowly dropwise adding acrylic acid with the mass 3-6 times that of the nano bamboo fibers into the reaction kettle while stirring; after stirring uniformly; under the protection of nitrogen, adding ammonium persulfate with the mass of 0.8-1.5% of the mixed solution into the reaction kettle, and carrying out heat preservation reaction for 3-6 h at the temperature of 60-80 ℃; after the reaction is finished, carrying out ethanol suction filtration and washing on the mixed components obtained in the reaction kettle; and drying the obtained solid material at 50-70 ℃ to obtain the modified nano bamboo fiber finished product.
3. The high-quality concrete based on nano bamboo fibers as claimed in claim 2, wherein: and the mixed solution used in the step II is prepared by uniformly mixing N, N-dimethylformamide, 30-40% of distilled water, 10-18% of dodecyl dimethyl benzyl ammonium chloride and 1.5-2.8% of octyl phenol polyoxyethylene ether in amount by using the N, N-dimethylformamide and ultrasonic waves.
4. The high-quality concrete based on nano bamboo fibers as claimed in claim 1, wherein the preparation method of the functional reinforcing agent is as follows:
ultrasonically dispersing a proper amount of flower-shaped nano cerium oxide in a proper amount of deionized water according to a solid-to-liquid ratio of 0.02-0.05 g/mL; after the cerium oxide is uniformly dispersed, firstly adding sodium silicate with the mass 5-8 times of that of the flower-shaped nano cerium oxide, mixing and stirring to dissolve the sodium silicate, then adding calcium nitrate with the amount of the sodium silicate and the like, mixing and stirring to completely precipitate; and then sequentially washing the obtained product with deionized water and drying the product by a centrifugal machine to obtain the finished product of the functional reinforcing agent.
5. The high-quality concrete based on nano bamboo fibers as claimed in claim 4, wherein the flower-like nano cerium oxide is prepared by the following steps:
i, putting a proper amount of cerium nitrate hexahydrate into a proper amount of ethanol according to the dosage ratio of 0.01-0.03 g/mL, adding triethanolamine with the substance amount being 6-9 times of that of the cerium nitrate hexahydrate, heating to 70-80 ℃ under the action of magnetic stirring, and carrying out heat preservation reaction for 25-40 min at the temperature; after the reaction is finished, naturally cooling the mixture to room temperature, and then carrying out centrifugal separation and absolute ethyl alcohol washing for 2-3 times; marking the obtained mixture as a mixed solution;
ii, adding ethylene glycol with the mass 2 times of the ethanol dosage in the step i into the obtained mixed solution, adjusting the pH value to 8-10 by ammonia water, sealing and heating the mixed solution in a reaction kettle to 180-200 ℃, and carrying out heat preservation reaction for 30-50 hours at the temperature; and then sequentially carrying out centrifugal separation, ethanol washing for 2-3 times and drying treatment on the mixed solution after reaction, then placing the obtained solid powder in a muffle furnace, and annealing at the temperature of 600 ℃ for 1h to finally obtain the finished flower-shaped nano cerium oxide.
6. The high-quality concrete based on nano bamboo fibers as claimed in claim 1, wherein the concrete is prepared from the following raw materials in percentage by weight: the external admixture is any one of nano silicon dioxide and nano titanium dioxide.
7. The high-quality concrete based on nano bamboo fibers as claimed in claim 1, wherein the concrete is prepared from the following raw materials in percentage by weight: the reinforcing fiber is any one of nano carbon fiber, steel fiber and polypropylene fiber.
8. The high-quality concrete based on nano bamboo fibers as claimed in claim 1, wherein the concrete is prepared from the following raw materials in percentage by weight: the water reducing agent is any one of a naphthalene water reducing agent and a polycarboxylic acid water reducing agent.
9. The high-quality concrete based on nano bamboo fibers as claimed in claim 1, wherein the concrete is prepared from the following raw materials in percentage by weight: the early strength agent is any one of triethanolamine, triisopropanolamine and calcium formate.
10. The preparation method of the high-quality concrete based on the nano bamboo fibers as claimed in any one of claims 1 to 9, which is characterized by comprising the following steps:
step one, weighing the raw materials according to the parts by weight, and crushing and grinding the broken stone and river sand to proper particle size; the obtained crushed stone and river sand powder are respectively stored for later use;
step two, sequentially transferring the portland cement, river sand, broken stone, fly ash, external admixture, S95 mineral powder and water into a mixing device, mixing and stirring the materials in the mixing device at a rotating speed of 250-400 r/min for 2-5 min, and after stirring is finished, marking the obtained mixture as a mixed material;
and step three, putting the rest raw materials into the mixed materials in the mixing equipment, mixing and stirring for 2-5 min, and discharging to obtain the high-quality concrete finished product of the nano bamboo fibers.
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