CN117303828A - Solid waste utilization type high-strength anti-corrosion wind power grouting material and preparation method thereof - Google Patents
Solid waste utilization type high-strength anti-corrosion wind power grouting material and preparation method thereof Download PDFInfo
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- CN117303828A CN117303828A CN202311343404.6A CN202311343404A CN117303828A CN 117303828 A CN117303828 A CN 117303828A CN 202311343404 A CN202311343404 A CN 202311343404A CN 117303828 A CN117303828 A CN 117303828A
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- 239000000463 material Substances 0.000 title claims abstract description 127
- 239000002910 solid waste Substances 0.000 title claims abstract description 57
- 238000005260 corrosion Methods 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- 239000000843 powder Substances 0.000 claims abstract description 85
- 239000002893 slag Substances 0.000 claims abstract description 72
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 36
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 36
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000011574 phosphorus Substances 0.000 claims abstract description 34
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 34
- 239000002994 raw material Substances 0.000 claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000004568 cement Substances 0.000 claims abstract description 28
- 239000002114 nanocomposite Substances 0.000 claims abstract description 26
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 24
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 23
- 239000002131 composite material Substances 0.000 claims abstract description 14
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 60
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 39
- 235000012239 silicon dioxide Nutrition 0.000 claims description 25
- 229910021487 silica fume Inorganic materials 0.000 claims description 21
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 19
- 239000007787 solid Substances 0.000 claims description 19
- 239000005543 nano-size silicon particle Substances 0.000 claims description 16
- 239000002245 particle Substances 0.000 claims description 16
- 238000003756 stirring Methods 0.000 claims description 16
- 239000010881 fly ash Substances 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 15
- 238000002156 mixing Methods 0.000 claims description 14
- 239000013530 defoamer Substances 0.000 claims description 12
- 239000000377 silicon dioxide Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- 239000002253 acid Substances 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 3
- 239000011398 Portland cement Substances 0.000 claims description 3
- 239000011575 calcium Substances 0.000 claims description 3
- 229910052791 calcium Inorganic materials 0.000 claims description 3
- 239000000395 magnesium oxide Substances 0.000 claims description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 3
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 239000012798 spherical particle Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 19
- 229910052799 carbon Inorganic materials 0.000 abstract description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 6
- 230000007797 corrosion Effects 0.000 abstract description 5
- 238000011049 filling Methods 0.000 abstract description 5
- 239000013078 crystal Substances 0.000 abstract description 4
- 230000000052 comparative effect Effects 0.000 description 17
- 238000012360 testing method Methods 0.000 description 7
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- 238000011161 development Methods 0.000 description 4
- 238000006703 hydration reaction Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000012856 packing Methods 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 3
- -1 active admixture Substances 0.000 description 3
- 239000004567 concrete Substances 0.000 description 3
- 230000036571 hydration Effects 0.000 description 3
- 239000002086 nanomaterial Substances 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 239000003469 silicate cement Substances 0.000 description 3
- 230000002195 synergetic effect Effects 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 239000002956 ash Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 239000002440 industrial waste Substances 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 229910003002 lithium salt Inorganic materials 0.000 description 2
- 159000000002 lithium salts Chemical class 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- CNLWCVNCHLKFHK-UHFFFAOYSA-N aluminum;lithium;dioxido(oxo)silane Chemical compound [Li+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O CNLWCVNCHLKFHK-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 1
- 229910052808 lithium carbonate Inorganic materials 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 229910052642 spodumene Inorganic materials 0.000 description 1
- OBSZRRSYVTXPNB-UHFFFAOYSA-N tetraphosphorus Chemical compound P12P3P1P32 OBSZRRSYVTXPNB-UHFFFAOYSA-N 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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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
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/06—Quartz; Sand
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/26—Carbonates
- C04B14/28—Carbonates of calcium
-
- 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
- C04B18/14—Waste materials; Refuse from metallurgical processes
- C04B18/141—Slags
- C04B18/144—Slags from the production of specific metals other than iron or of specific alloys, e.g. ferrochrome slags
-
- 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
- C04B18/14—Waste materials; Refuse from metallurgical processes
- C04B18/141—Slags
- C04B18/145—Phosphorus slags
-
- 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
- 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
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/70—Grouts, e.g. injection mixtures for cables for prestressed concrete
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Abstract
The invention provides a solid waste utilization type high-strength anti-corrosion wind power grouting material and a preparation method thereof, wherein the solid waste utilization type high-strength anti-corrosion wind power grouting material comprises the following raw materials in parts by weight: 30-50 parts of cement, 10-20 parts of active admixture, 1-5 parts of nano composite material, 40-60 parts of aggregate, 0.5-1.0 part of powdery water reducer, 0.8-1.2 parts of composite expanding agent and 0.02-0.08 part of defoaming agent. The high-strength corrosion-resistant wind power grouting material provided by the invention utilizes the industrial solid waste lithium slag powder and phosphorus slag powder which are accumulated in large quantity at present as active admixture, and optimizes the grouting material performance through the filling effect, the surface effect and the crystal nucleus effect of the nanocomposite, so that the wind power grouting material which is environment-friendly, excellent in performance and economical and low in carbon is provided.
Description
Technical Field
The invention relates to the field of grouting materials, in particular to a solid waste utilization type high-strength anti-corrosion electro-pneumatic grouting material, and simultaneously relates to a preparation method of the solid waste utilization type high-strength anti-corrosion electro-pneumatic grouting material.
Background
With the high-speed development of economy, the living standard of people is improved increasingly, but the environmental problem is also serious, the development of clean renewable energy is an important measure for building environment-friendly economy, the global wind energy is rich, the wind power generation is green and environment-friendly, and the number of wind power installation is increased rapidly in recent years. Along with the development of wind power industry, the reliability and firmness of a wind power equipment foundation are vital, grouting materials are used as key materials for installing a fan foundation, the safety and stability of a fan structure can be guaranteed, the stress on the foundation is buffered, the fan installation error is reduced, and the fatigue damage effect is reduced, so that the grouting materials have the performances of self-leveling, micro-expansion, ultra-high strength, high elastic modulus, ultra-early strength, fatigue resistance and the like.
The lithium slag is industrial waste slag generated in the process of producing lithium salt by using a sulfuric acid method, and 8-10 t of lithium slag is discharged every 1t of lithium carbonate is produced. China is the country with the largest spodumene reserves in the world, and along with the accelerated development of lithium salt chemical industry and lithium ion battery industry, the discharge of lithium slag is increased day by day. The phosphorus slag is an industrial byproduct generated during the preparation of yellow phosphorus by an electric furnace method, and the amount of the phosphorus slag generated in China is the first place in the world all the year round.
At present, the treatment of lithium slag and phosphorus slag is mainly piling and landfill, which can cause great waste of resources, and simultaneously, a great deal of piling up causes heavy burden on natural environment and land resources, so that reasonable resource utilization of the lithium slag and the phosphorus slag is needed. Amorphous SiO contained in lithium slag 2 And Al 2 O 3 Has volcanic ash activity, and can obtain higher activity under the excitation of alkaline substances such as cement and the like. The vitreous content in the phosphorous slag can reach 85% -90% generally, and the main components are CaO and SiO 2 Therefore, the modified calcium carbonate has good activity and can be used as a mineral admixture for industrial production of concrete. How to realize the resource utilization of lithium slag and phosphorus slag, saves cost for enterprises, improves economic benefits, and has important significance for protecting environment and saving resources.
The inventors have retrieved the following related patent documents: the application number CN115819049A, named as a cement-based grouting material for mounting a wind power foundation tower base and a preparation method thereof, discloses grouting materials with different strengths obtained through the design of an aggregate framework and the matching of a cementing material. The application number CN114031349A, named as 'a wind power high-strength grouting material and a preparation method thereof', discloses a shrinkage-compensating wind power grouting material, adopts the synergistic effect of an organic and inorganic composite expanding agent, compensates shrinkage in a staged whole process, and has excellent mechanical properties. Application number CN114751694A, named as "cement grouting material suitable for marine environment" and its preparation method, discloses a cement grouting material suitable for marine environment. On the basis of optimizing raw materials, the optimal mixing ratio is designed according to the closest packing principle, so that the problems of poor fluidity, low strength, poor underwater dispersion, poor durability and the like of grouting materials are solved. Application number CN114507048A, named as "high-performance grouting material for offshore wind power, and use method and application thereof", discloses high-performance grouting material for offshore wind power, which has good initial fluidity in a low-temperature environment, low fluidity fluctuation within 1h, excellent compressive strength, and micro-expansion effect and low-pore effect of the hardened grouting material.
At present, the grouting material is researched mainly around mechanical property and workability, and the grouting material with self-leveling property, micro-expansion property, ultra-high strength, high elastic modulus and ultra-early strength is researched, but the problems of high raw material cost, poor durability and the like exist. Therefore, under the condition of meeting the basic performance requirement of the grouting material, the wind power base grouting material which is green, environment-friendly, excellent in performance, economical and low in carbon is developed by fully utilizing industrial solid waste, the cost is saved for enterprises, the economic benefit is improved, and meanwhile, the method has important significance in protecting the environment, saving resources and achieving the double-carbon target.
Disclosure of Invention
The invention relates to a solid waste utilization type high-strength anti-erosion wind-driven electric grouting material, which uses industrial solid waste lithium slag powder and phosphorus slag powder which are accumulated in a large quantity at present as active fillers, so that the grouting material has better early-stage and later-stage strength and durability.
The solid waste utilization type high-strength anti-corrosion wind-driven electric grouting material comprises the following raw materials in parts by weight: 30-50 parts of cement, 10-20 parts of active admixture, 1-5 parts of nano composite material, 40-60 parts of aggregate, 0.5-1.0 part of powdery water reducer, 0.8-1.2 parts of composite expanding agent and 0.02-0.08 part of defoaming agent.
Further, the cement comprises 52.5-stage portland cement.
Further, the active admixture comprises, by weight, 30-40 parts of lithium slag powder, 20-30 parts of phosphorus slag powder, 20-30 parts of fly ash and 20-30 parts of silica fume.
Further, the mass fraction of the screen residue of the square hole screen of the fly ash with the diameter of 45 μm is less than or equal to 25%, and the loss on ignition is less than or equal to 5%; the silica fume is S95 grade lightly encrypted silica fume, and the specific surface area is more than or equal to 15000m 2 Per kg, the content of active silicon dioxide is more than or equal to 90 percent; the specific surface area of the lithium slag powder is 500-800m 2 /kg; the specific surface area of the phosphorus slag powder is 300-500m 2 /kg。
Further, the nano composite material comprises, by weight, 30-70 parts of nano calcium carbonate and 30-70 parts of nano silicon dioxide.
Furthermore, the nano calcium carbonate is white solid powder, the average particle diameter is 40-100nm, and the content of the calcium carbonate is more than or equal to 90%. The nano silicon dioxide is white solid powder with the average particle diameter of 20-50nm, the silicon dioxide content is more than or equal to 90%, and the nano silicon dioxide is spherical particles.
Further, the aggregate comprises 20-40 parts of 8-16 mesh aggregate, 20-40 parts of 20-40 mesh aggregate, 20-40 parts of 40-70 mesh aggregate and 10-20 parts of 70-120 mesh aggregate by weight ratio.
Further, the powdery water reducer comprises a powdery polycarboxylic acid high-performance water reducer with a water reduction rate of more than 40%.
Further, the composite expanding agent comprises 0.3 part of plastic expanding agent, 8 parts of calcium sulfoaluminate expanding agent and 2 parts of light burned magnesium oxide expanding agent in weight ratio; and/or, the defoamer comprises a silicone defoamer.
The invention also provides a preparation method of the solid waste utilization type high-strength anti-corrosion wind-driven electric grouting material, which comprises the following steps:
1) Mixing cement, active admixture, nano composite material and aggregate, and stirring uniformly to obtain solid powder A.
2) And mixing the powdery water reducer, the composite expanding agent and the defoaming agent, and uniformly stirring to obtain solid powder B.
3) Mixing the solid powder materials A and B, uniformly stirring to obtain a powder mixture C, adding water into the powder mixture C according to a water-material ratio of 0.10-0.12, and stirring until the mixture is uniform and has no caking, thereby preparing the solid waste utilization type high-strength anti-erosion wind power grouting material.
The solid waste utilization type high-strength anti-erosion wind-driven electric grouting material is prepared by mixing cement, industrial solid waste active admixture, nano composite material, aggregate and admixture according to a close stacking theory. Has the characteristics of low cost, simple technology, convenient preparation, low energy consumption, green and environment-friendly performance, economy, low carbon and the like.
Compared with the prior art, the invention has the beneficial effects that: the grouting material for the wind power foundation has the characteristics of green low carbon, excellent performance, economy, environmental protection and the like, can solve the problems of occupation of a large amount of piled up land of industrial waste residues and environmental pollution, can save natural resources, can improve early and later strength of the grouting material and enhance the durability of the grouting material by utilizing the synergistic effect of the industrial solid waste lithium slag powder and the phosphorus slag powder which are piled up in large quantity as an active admixture and utilizing the filling effect, the surface effect and the crystal nucleus effect of the nano material.
Detailed Description
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
The experimental methods in the following examples are conventional methods unless otherwise specified. The test materials used in the examples described below, unless otherwise specified, were purchased from conventional biochemical reagent stores. In addition, unless specifically described otherwise, each term and process referred to in this embodiment is understood by those skilled in the art in light of the commonly recognized and conventional approaches in the art.
The solid waste utilization type high-strength anti-corrosion wind-driven electric grouting material comprises the following raw materials in parts by weight: 30-50 parts of cement, 10-20 parts of active admixture, 1-5 parts of nano composite material, 40-60 parts of aggregate, 0.5-1.0 part of powdery water reducer, 0.8-1.2 parts of composite expanding agent and 0.02-0.08 part of defoaming agent.
The solid waste utilization type high-strength anti-erosion wind-driven electric grouting material is prepared by mixing cement, industrial solid waste active admixture, nano composite material, aggregate and admixture according to a close stacking theory, and has the characteristics of low cost, simple technology, convenient preparation, low energy consumption, green and environment-friendly performance, economy, low carbon and the like.
The cement preferably comprises 52.5-grade portland cement, and the grade cement has the advantage of high strength and high performance.
The active admixture is preferably prepared from (by weight) lithium slag powder 30-40 parts, phosphorus slag powder 20-30 parts, fly ash 20-30 parts, and silica fume 20-30 parts. Fly ash 4The mass fraction of the screen residue of the 5 mu m square hole screen is less than or equal to 25 percent, and the loss on ignition is less than or equal to 5 percent; the silica fume is S95 grade lightly encrypted silica fume, and the specific surface area is more than or equal to 15000m 2 Per kg, the content of active silicon dioxide is more than or equal to 90 percent; the specific surface area of the lithium slag powder is 500-800m 2 /kg; the specific surface area of the phosphorus slag powder is 300-500m 2 /kg。
The preferable combination of the active admixture can more effectively promote the hydration of cementing material cement, improve the mechanical property and durability of grouting material and improve the segregation and bleeding of grouting material. According to the theory of close packing, gaps among particles are filled step by step through continuous grading of powder mineral admixtures with various particle diameters, so that the packing is tighter, and the structure is more compact. The early and later strength of the grouting material is improved by utilizing the different influences of silica fume and fly ash on each stage of cement hydration. The lithium slag powder and the phosphorus slag powder are powder materials which are prepared by grinding industrial solid waste lithium slag and phosphorus slag into powder materials with certain fineness through dry powder, wherein the finer the particles are, the larger the specific surface area is, the higher the volcanic ash activity is, but the smaller the particles are, the mutual adsorption and agglomeration are easy, and more energy is consumed for grinding. The synergistic effect of the doped lithium slag powder and the phosphorus slag powder can effectively improve the microstructure of the grouting material, improve the strength of the grouting material, reduce shrinkage and enhance durability.
The components and weight ratio of the nanocomposite are preferably 30-70 parts of nano calcium carbonate and 30-70 parts of nano silicon dioxide.
More preferably, the nano calcium carbonate is white solid powder, the average particle diameter is 40-100nm, and the content of the calcium carbonate is more than or equal to 90%. The nano silicon dioxide is white solid powder with the average particle diameter of 20-50nm, the silicon dioxide content is more than or equal to 90%, and the nano silicon dioxide is spherical particles.
The nano composite material can exert the surface effect, the micro aggregate filling effect and the crystal nucleus effect of the nano material, wherein the nano silicon dioxide can carry out secondary hydration reaction with hydration products of cement, and the filling and crystal nucleus effects of nano calcium carbonate can strengthen the mechanical property, the impermeability and the durability of grouting materials.
The aggregate preferably comprises quartz sand, 20-40 parts of 8-16 mesh aggregate, 20-40 parts of 20-40 mesh aggregate, 20-40 parts of 40-70 mesh aggregate and 10-20 parts of 70-120 mesh aggregate according to the weight ratio. The aggregate is proportioned and designed through continuous grading and close packing, so that the aggregate plays a role of a framework in grouting material, and the volume stability of the hardened grouting material is improved.
In addition, the powdery water reducer preferably adopts a powdery polycarboxylic acid high-performance water reducer with a water reduction rate of more than 40%. The water reducer can play a role in dispersing cement and improve the fluidity of grouting materials.
Further, the components of the composite expanding agent and the weight ratio are preferably 0.3 part of plastic expanding agent, 8 parts of calcium sulfoaluminate expanding agent and 2 parts of light burned magnesium oxide expanding agent; and/or, the defoamer comprises a silicone defoamer. According to the invention, the organic and inorganic expansion agents are compounded, so that compensation shrinkage can be realized in the early plastic stage and the hardening stage after molding of the grouting material, the expansion process of the grouting material is regulated and controlled, the whole process of compensation shrinkage is realized, the later strength of the grouting material is stable and has no shrinkage, the volume is slightly expanded, the equipment foundations are closely contacted and have no shrinkage, the high accuracy of equipment installation is ensured, and the long-term safe operation of the equipment is ensured.
The invention also provides a preparation method of the solid waste utilization type high-strength anti-corrosion wind-driven electric grouting material, which specifically comprises the following steps:
1) Mixing cement, active admixture, nano composite material and aggregate, and stirring uniformly to obtain solid powder A.
2) And mixing the powdery water reducer, the composite expanding agent and the defoaming agent, and uniformly stirring to obtain solid powder B.
3) Mixing the solid powder materials A and B, uniformly stirring to obtain a powder mixture C, adding water into the powder mixture C according to a water-material ratio of 0.10-0.12, and stirring until the mixture is uniform and has no caking, thereby preparing the solid waste utilization type high-strength anti-erosion wind power grouting material.
The following describes the technical scheme of the present invention in detail through specific embodiments:
example 1
The solid waste utilization type high-strength anti-corrosion wind power grouting material comprises the following raw materials of cement P.I 52.5 silicate cement; in the active admixtureThe mass fraction of the screen residue of the 45 mu m square hole screen of the fly ash is 16%, and the loss on ignition is 1.7%; the silica fume is S95 grade lightly encrypted silica fume, the content of active silica is more than or equal to 90%, and the specific surface area is 21350m 2 /kg; the specific surface area of the lithium slag powder is 735m 2 /kg; the specific surface area of the phosphorus slag powder is 429m 2 /kg; the average grain diameter of the nano calcium carbonate is 67nm, and the content of the calcium carbonate is more than or equal to 90 percent; the average grain diameter of the nano silicon dioxide is 32nm, and the silicon dioxide content is more than or equal to 90 percent.
The aggregate adopts quartz sand, the water reducer is a powdery polycarboxylic acid high-performance water reducer with water reducing rate of 45%, and the defoamer is an organosilicon defoamer.
The solid waste utilization type high-strength anti-erosion wind power grouting slurry of the embodiment comprises the following raw materials in table 1.
TABLE 1 wind power base grouting material raw material content of example 1
The aggregate component content of each particle size of example 1 is shown in Table 2 below.
TABLE 2 content of aggregate components of respective particle diameters of example 1
| Sequence number | Raw materials | Content/part |
| 1 | 10-20 meshes | 35 |
| 2 | 20-40 mesh | 30 |
| 3 | 40-70 mesh | 25 |
| 4 | 70-120 mesh | 10 |
The active admixture component content of example 1 is shown in table 3 below.
TABLE 3 active admixture component content of example 1
| Sequence number | Raw materials | Content/part |
| 1 | Lithium slag powder | 35 |
| 2 | Phosphorus slag powder | 25 |
| 3 | Fly ash | 20 |
| 4 | Silica fume | 20 |
The nanocomposite component content of example 1 is shown in table 4 below.
TABLE 4 nanocomposite component content of example 1
| Sequence number | Raw materials | Content/part |
| 1 | Nanometer calcium carbonate | 30 |
| 2 | Nano silicon dioxide | 70 |
The preparation method of the solid waste utilization type high-strength anti-corrosion wind-driven electric grouting material in the embodiment 1 comprises the following steps:
1) Adding cement, active admixture, nano composite material and aggregate, and stirring for at least 5min to obtain uniformly mixed solid powder A.
2) Adding the powdery water reducer, the composite expanding agent and the defoaming agent, and stirring for at least 5min to obtain the uniformly mixed solid powder B.
3) Mixing the solid powder A and the solid powder B, and stirring for at least 5min to obtain a powder mixture C. And then adding water into the powder mixed material C according to the water-material ratio of 0.10-0.12, and mechanically stirring for not less than 8min until the mixture is completely uniform and has no caking, so that the high-strength corrosion-resistant wind power grouting material can be used for grouting construction.
Example 2
The solid waste utilization type high-strength anti-corrosion wind power grouting material comprises the following raw materials of cement P.I 52.5 silicate cement; the mass fraction of the screen residue of the 45 mu m square hole screen of the fly ash in the active admixture is 18%, and the loss on ignition is 3%; the silica fume is S95 grade lightly encrypted silica fume, the content of active silica is more than or equal to 90%, and the specific surface area is 21350m 2 /kg; the specific surface area of the lithium slag powder is 569m 2 /kg; the specific surface area of the phosphorus slag powder is 349m 2 /kg; the average grain diameter of the nano calcium carbonate is 87nm, and the content of the calcium carbonate is more than or equal to 90 percent; the average grain diameter of the nano silicon dioxide is 43nm, and the silicon dioxide content is more than or equal to 90 percent.
The aggregate is quartz sand, the water reducer is a powdery polycarboxylic acid high-performance water reducer with water reducing rate of 45%, and the defoamer is an organosilicon defoamer.
The solid waste utilization type high-strength anti-erosion wind power grouting slurry of the embodiment comprises the following raw materials in table 5.
TABLE 5 wind Power base grouting material raw Material content of example 2
| Sequence number | Raw materials | Content/part |
| 1 | Cement and its preparation method | 35 |
| 2 | Active admixture | 15 |
| 3 | Nanocomposite material | 3 |
| 4 | Aggregate material | 47 |
| 5 | Water reducing agent | 0.636 |
| 6 | Composite expanding agent | 0.9 |
| 7 | Defoaming agent | 0.06 |
The aggregate component content of each particle size of example 2 is shown in Table 6 below.
TABLE 6 content of aggregate components of respective particle sizes of example 2
| Sequence number | Raw materials | Content/part |
| 1 | 10-20 meshes | 40 |
| 2 | 20-40 mesh | 30 |
| 3 | 40-70 mesh | 20 |
| 4 | 70-120 mesh | 10 |
The active admixture component content of example 2 is shown in table 7 below.
TABLE 7 active admixture component content of example 1
| Sequence number | Raw materials | Content/part |
| 1 | Lithium slag powder | 40 |
| 2 | Phosphorus slag powder | 20 |
| 3 | Fly ash | 20 |
| 4 | Silica fume | 20 |
The nanocomposite component content of example 2 is shown in table 8 below.
TABLE 8 nanocomposite component content of example 2
| Sequence number | Raw materials | Content/part |
| 1 | Nanometer calcium carbonate | 50 |
| 2 | Nano silicon dioxide | 50 |
The preparation method of the solid waste utilization type high-strength anti-erosion wind power grouting material is the same as that of the embodiment 1.
Example 3
The solid waste utilization type high-strength anti-corrosion wind power grouting material comprises the following raw materials of cement P.I 52.5 silicate cement; 45 mu m square hole sieve residue of fly ash in active admixtureThe weight fraction is 18% and the loss on ignition is 3%; the silica fume is S95 grade lightly encrypted silica fume, the content of active silica is more than or equal to 90%, and the specific surface area is 21350m 2 /kg; the specific surface area of the lithium slag powder is 637m 2 /kg; the specific surface area of the phosphorus slag powder is 315m 2 /kg; the average grain diameter of the nano calcium carbonate is 95nm, and the content of the calcium carbonate is more than or equal to 90 percent; the average grain diameter of the nano silicon dioxide is 50nm, and the silicon dioxide content is more than or equal to 90 percent.
The aggregate is quartz sand, the water reducer is a powdery polycarboxylic acid high-performance water reducer with water reducing rate of 45%, and the defoamer is an organosilicon defoamer.
The solid waste utilization type high-strength anti-erosion wind power grouting slurry of the embodiment comprises the following raw materials in table 9.
TABLE 9 wind Power base grouting material raw Material content of example 3
The aggregate component content of each particle size of example 3 is shown in table 10 below.
TABLE 10 aggregate component content of particle sizes of example 3
| Sequence number | Raw materials | Content/part |
| 1 | 10-20 meshes | 45 |
| 2 | 20-40 mesh | 30 |
| 3 | 40-70 mesh | 15 |
| 4 | 70-120 mesh | 10 |
The active admixture component content of example 3 is shown in table 11 below.
TABLE 11 active admixture component content of example 3
| Sequence number | Raw materials | Content/part |
| 1 | Lithium slag powder | 30 |
| 2 | Phosphorus slag powder | 20 |
| 3 | Fly ash | 30 |
| 4 | Silica fume | 20 |
The nanocomposite component content of example 3 is shown in table 12 below.
TABLE 12 nanocomposite component content of example 3
| Sequence number | Raw materials | Content/part |
| 1 | Nanometer calcium carbonate | 50 |
| 2 | Nano silicon dioxide | 50 |
The preparation method of the solid waste utilization type high-strength anti-erosion wind power grouting material is the same as that of the embodiment 1.
Comparative example 1
The composition and preparation method of the raw materials of the solid waste utilization type high-strength anti-erosion wind power grouting material of the comparative example are the same as those of the example 1, except that the component content of the active admixture is not doped with phosphorus slag powder. The specific active admixture component levels are shown in table 13 below.
TABLE 13 active admixture component content of comparative example 1
| Sequence number | Raw materials | Content/part |
| 1 | Lithium slag powder | 50 |
| 2 | Phosphorus slag powder | 0 |
| 3 | Fly ash | 30 |
| 4 | Silica fume | 20 |
Comparative example 2
The composition and preparation method of the raw materials of the solid waste utilization type high-strength anti-erosion wind power grouting material of the comparative example are the same as those of the example 1, except that the component content of the active admixture is not doped with lithium slag powder. The specific active admixture component levels are shown in table 14 below.
Table 14 active admixture component content of comparative example 2
| Sequence number | Raw materials | Content/part |
| 1 | Lithium slag powder | 0 |
| 2 | Phosphorus slag powder | 50 |
| 3 | Fly ash | 30 |
| 4 | Silica fume | 20 |
Comparative example 3
The raw material composition and the preparation method of the solid waste utilization type high-strength anti-erosion wind power grouting material of the comparative example are the same as those of the example 1, except that the nanocomposite is not doped. The raw material content of the concrete wind power basic grouting material is shown in the following table 15.
Table 15 comparative example 3 wind power base grouting material content
| Sequence number | Raw materials | Content-Parts by weight |
| 1 | Cement and its preparation method | 40 |
| 2 | Active admixture | 10 |
| 3 | Nanocomposite material | 0 |
| 4 | Aggregate material | 50 |
| 5 | Water reducing agent | 0.6 |
| 6 | Composite expanding agent | 1.1 |
| 7 | Defoaming agent | 0.06 |
Comparative example 4
The raw material composition and the preparation method of the solid waste utilization type high-strength anti-erosion wind-driven electric grouting material of the comparative example are the same as those of the example 1, and the difference is that the fineness of the ground lithium slag and the ground phosphorus slag is thicker, and the specific surface area of the lithium slag powder of the comparative example is 364m 2 Per kg, the specific surface area of the phosphorus slag powder is 219m 2 /kg。
Performance detection
The performance of the examples was tested, and the mechanical and working tests were carried out according to specifications GB/T50448-2015 "cement-based grouting Material application technical Specification" and JG/T408-2019 "sleeve grouting Material for reinforcing bar connection". Sulfate corrosion resistance test is carried out according to the standard GB/T50082-2009 method for testing the long-term performance and the durability of common concrete, and Na with the concentration of 10 percent is adopted 2 SO 4 The test results after 15 cycles of solution attack are shown in the following table. The NEL test was used to measure the chloride ion resistance coefficient at 28d age, and the test results are shown in the following table.
Table 16 shows the performance test results of environment-friendly high-strength wind-electricity grouting material
According to the performance test results of the embodiment, the prepared solid waste utilization type high-strength anti-erosion wind power grouting slurry has large fluidity in the initial period and 30min and small loss, and can meet the requirement of self-leveling wind power equipment foundation grouting space without tamping and compaction during site construction. The 1d compressive strength is larger than 70MPa, the 3d compressive strength is larger than 80MPa, and the 28d compressive strength is larger than 110MPa, so that the high-early-stage strength and the high-final strength are realized, and the safe bearing under the load actions of wind power, self tower drum and the like can be effectively ensured. Meanwhile, the grouting material is slightly expanded in volume and contracted in a compensation way, so that the wind power equipment foundations are compact and have no contraction, and the high accuracy of equipment installation is ensured; the chloride ion diffusion coefficient is very low, the corrosion resistance and penetration resistance are excellent, and the corrosion durability of the sulfate solution is good.
As can be seen from comparison of the performance test results of the examples and the comparative examples, in comparative example 1, only lithium slag powder was doped but phosphorus slag powder was not doped, the fluidity of the grouting material was reduced, the compressive strengths of 1d and 3d were relatively low, the diffusion coefficient of chloride ions was reduced, and the early strength was adversely affected by the doping of lithium slag powder. In comparative example 2, the 28d compressive strength was relatively low by doping only the phosphorus slag powder without doping the lithium slag powder, and the doping of the phosphorus slag powder adversely affected the strength thereof. In comparative example 3, no nanocomposite was added, the compressive strength of the grout was relatively lowered at each age, and durability was deteriorated. The fineness of the lithium slag powder and the phosphorus slag powder in comparative example 4 was coarse, and the filling effect and pozzolanic activity thereof were poor, resulting in a decrease in early and late strengths. Therefore, the nano composite material is optimized and improved by the complementary blending advantages of the lithium slag powder and the phosphorus slag powder, so that the grouting material performance is enhanced.
The high-strength anti-erosion wind power grouting material prepared by the invention utilizes industrial solid waste lithium slag powder and phosphorus slag powder as active admixture, and can be developed into a wind power base grouting material which is green, environment-friendly, excellent in performance, economical and low in carbon, saves cost for enterprises, improves economic benefit, protects environment for society and saves resources after being optimized and improved by nano materials.
The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the scope of the technical concept of the present invention, and all the simple modifications belong to the protection scope of the present invention.
In addition, the specific features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described further.
Claims (10)
1. A solid waste utilization type high-strength anti-erosion wind-driven electric grouting material is characterized in that: the preparation raw materials of the solid waste utilization type high-strength anti-corrosion wind-driven electric grouting material comprise the following components in parts by weight: 30-50 parts of cement, 10-20 parts of active admixture, 1-5 parts of nano composite material, 40-60 parts of aggregate, 0.5-1.0 part of powdery water reducer, 0.8-1.2 parts of composite expanding agent and 0.02-0.08 part of defoaming agent.
2. The solid waste utilization type high-strength anti-corrosion wind-driven electric grouting material according to claim 1, wherein the solid waste utilization type high-strength anti-corrosion wind-driven electric grouting material is characterized in that: the cement comprises 52.5-stage portland cement.
3. The solid waste utilization type high-strength anti-corrosion wind-driven electric grouting material according to claim 1, wherein the solid waste utilization type high-strength anti-corrosion wind-driven electric grouting material is characterized in that: the active admixture comprises, by weight, 30-40 parts of lithium slag powder, 20-30 parts of phosphorus slag powder, 20-30 parts of fly ash and 20-30 parts of silica fume.
4. The solid waste utilization type high-strength anti-corrosion wind-driven electric grouting material according to claim 3, wherein the solid waste utilization type high-strength anti-corrosion wind-driven electric grouting material is characterized in that: the mass fraction of the screen residue of the square-hole sieve with 45 mu m of the fly ash is less than or equal to 25%, and the loss on ignition is less than or equal to 5%; the silica fume is S95 grade lightly encrypted silica fume, and the specific surface area is more than or equal to 15000m 2 Per kg, the content of active silicon dioxide is more than or equal to 90 percent; the specific surface area of the lithium slag powder is 500-800m 2 /kg; the specific surface area of the phosphorus slag powder is 300-500m 2 /kg。
5. The solid waste utilization type high-strength anti-corrosion wind-driven electric grouting material according to claim 1, wherein the solid waste utilization type high-strength anti-corrosion wind-driven electric grouting material is characterized in that: the nano composite material comprises, by weight, 30-70 parts of nano calcium carbonate and 30-70 parts of nano silicon dioxide.
6. The solid waste utilization type high-strength anti-corrosion wind-driven electric grouting material according to claim 5, wherein the solid waste utilization type high-strength anti-corrosion wind-driven electric grouting material is characterized in that: the nano calcium carbonate is white solid powder, the average particle diameter is 40-100nm, and the content of the calcium carbonate is more than or equal to 90%; the nano silicon dioxide is white solid powder with the average particle diameter of 20-50nm, the silicon dioxide content is more than or equal to 90%, and the nano silicon dioxide is spherical particles.
7. The solid waste utilization type high-strength anti-corrosion wind-driven electric grouting material according to claim 1, wherein the solid waste utilization type high-strength anti-corrosion wind-driven electric grouting material is characterized in that: the aggregate comprises 20-40 parts of 8-16 mesh aggregate, 20-40 parts of 20-40 mesh aggregate, 20-40 parts of 40-70 mesh aggregate and 10-20 parts of 70-120 mesh aggregate by weight ratio.
8. The solid waste utilization type high-strength anti-corrosion wind-driven electric grouting material according to claim 1, wherein the solid waste utilization type high-strength anti-corrosion wind-driven electric grouting material is characterized in that: the powdery water reducer comprises a powdery polycarboxylic acid high-performance water reducer with a water reducing rate of more than 40 percent.
9. The solid waste utilization type high-strength anti-erosion wind power grouting material according to any one of claims 1 to 8, wherein the solid waste utilization type high-strength anti-erosion wind power grouting material is characterized in that: the composite expanding agent comprises the following components in parts by weight of 0.3 part of a plastic expanding agent, 8 parts of a calcium sulfoaluminate expanding agent and 2 parts of a light burned magnesium oxide expanding agent; and/or, the defoamer comprises a silicone defoamer.
10. A method for preparing the solid waste utilization type high-strength anti-erosion wind-driven electric grouting material according to any one of claims 1 to 9, which is characterized by comprising the following steps:
1) Mixing cement, an active admixture, a nano composite material and aggregate, and uniformly stirring to obtain solid powder A;
2) Mixing the powdery water reducer, the composite expanding agent and the defoaming agent, and uniformly stirring to obtain solid powder B;
3) Mixing the solid powder materials A and B, uniformly stirring to obtain a powder mixture C, adding water into the powder mixture C according to a water-material ratio of 0.10-0.12, and stirring until the mixture is uniform and has no caking, thereby preparing the solid waste utilization type high-strength anti-erosion wind power grouting material.
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