CN116462484A - Slag-waste marble powder-based alkali-activated high-strength concrete and preparation method thereof - Google Patents
Slag-waste marble powder-based alkali-activated high-strength concrete and preparation method thereof Download PDFInfo
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- CN116462484A CN116462484A CN202310527147.5A CN202310527147A CN116462484A CN 116462484 A CN116462484 A CN 116462484A CN 202310527147 A CN202310527147 A CN 202310527147A CN 116462484 A CN116462484 A CN 116462484A
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- 239000000843 powder Substances 0.000 title claims abstract description 76
- 239000002699 waste material Substances 0.000 title claims abstract description 53
- 239000004579 marble Substances 0.000 title claims abstract description 52
- 239000003513 alkali Substances 0.000 title claims abstract description 45
- 239000011372 high-strength concrete Substances 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title abstract description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 39
- 239000000654 additive Substances 0.000 claims abstract description 22
- 230000000996 additive effect Effects 0.000 claims abstract description 22
- 239000002131 composite material Substances 0.000 claims abstract description 21
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 17
- 239000011707 mineral Substances 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910001868 water Inorganic materials 0.000 claims abstract description 16
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 12
- 235000019353 potassium silicate Nutrition 0.000 claims abstract description 7
- 239000002994 raw material Substances 0.000 claims abstract description 6
- 238000003756 stirring Methods 0.000 claims description 54
- 239000000463 material Substances 0.000 claims description 24
- 239000003638 chemical reducing agent Substances 0.000 claims description 18
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 17
- 239000006004 Quartz sand Substances 0.000 claims description 14
- DGVVJWXRCWCCOD-UHFFFAOYSA-N naphthalene;hydrate Chemical compound O.C1=CC=CC2=CC=CC=C21 DGVVJWXRCWCCOD-UHFFFAOYSA-N 0.000 claims description 13
- 239000002245 particle Substances 0.000 claims description 13
- CDMADVZSLOHIFP-UHFFFAOYSA-N disodium;3,7-dioxido-2,4,6,8,9-pentaoxa-1,3,5,7-tetraborabicyclo[3.3.1]nonane;decahydrate Chemical compound O.O.O.O.O.O.O.O.O.O.[Na+].[Na+].O1B([O-])OB2OB([O-])OB1O2 CDMADVZSLOHIFP-UHFFFAOYSA-N 0.000 claims description 12
- 235000010339 sodium tetraborate Nutrition 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 9
- 239000004115 Sodium Silicate Substances 0.000 claims description 6
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 6
- 239000011734 sodium Substances 0.000 claims description 4
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 229910052708 sodium Inorganic materials 0.000 claims description 3
- 238000009775 high-speed stirring Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 6
- 239000004566 building material Substances 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 12
- 235000010755 mineral Nutrition 0.000 description 12
- 239000004567 concrete Substances 0.000 description 11
- 239000002893 slag Substances 0.000 description 7
- 239000004568 cement Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- 229910004283 SiO 4 Inorganic materials 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- RRDQTXGFURAKDI-UHFFFAOYSA-N formaldehyde;naphthalene-2-sulfonic acid Chemical group O=C.C1=CC=CC2=CC(S(=O)(=O)O)=CC=C21 RRDQTXGFURAKDI-UHFFFAOYSA-N 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 229920005646 polycarboxylate Polymers 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- AEQDJSLRWYMAQI-UHFFFAOYSA-N 2,3,9,10-tetramethoxy-6,8,13,13a-tetrahydro-5H-isoquinolino[2,1-b]isoquinoline Chemical compound C1CN2CC(C(=C(OC)C=C3)OC)=C3CC2C2=C1C=C(OC)C(OC)=C2 AEQDJSLRWYMAQI-UHFFFAOYSA-N 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- 239000004594 Masterbatch (MB) Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000176 sodium gluconate Substances 0.000 description 1
- 229940005574 sodium gluconate Drugs 0.000 description 1
- 235000012207 sodium gluconate Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/24—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- C04B18/12—Waste materials; Refuse from quarries, mining or the like
-
- 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
-
- 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
- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
- C04B22/0013—Boron 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
- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
- C04B22/06—Oxides, Hydroxides
- C04B22/062—Oxides, Hydroxides of the alkali or alkaline-earth metals
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
- C04B2103/302—Water reducers
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mining & Mineral Resources (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses slag-waste marble powder-based alkali-activated high-strength concrete and a preparation method thereof, and belongs to the technical field of green building materials. The invention provides slag-waste marble powder-based alkali-activated high-strength concrete, which comprises the following raw materials in parts by weight: 338 to 489 parts of mineral powder, 122 to 250 parts of waste marble powder, 121 to 318 parts of water glass, 24 to 59 parts of sodium hydroxide, 4 to 14 parts of composite additive, 28 to 142 parts of water and 1080 parts of fine aggregate. The slag-waste marble powder-based alkali-activated high-strength concrete prepared by the method has good physical and mechanical properties, has the characteristics of early strength and high strength, can shorten the construction period to a certain extent in actual engineering, improves the construction efficiency, can reach more than 90MPa in 28 days, and can meet the requirements of most high-rise buildings and large-span engineering on the compressive strength.
Description
Technical Field
The invention belongs to the technical field of green building materials, and particularly relates to slag-waste marble powder-based alkali-activated high-strength concrete and a preparation method thereof.
Background
In the period of 'large construction', cement is used as the most widely used cementing material in the construction engineering, and the yield is continuously increased. However, a large amount of carbon dioxide is discharged during the cement production process, which is an important cause of greenhouse effect, and in addition, harmful gases such as sulfur dioxide, nitrogen oxides, fluoride and the like are generated during the cement production process, thereby causing environmental pollution.
Slag and waste marble powder are common solid wastes, and annual yield is extremely high. Particularly marble powder, which is used as a main building decoration material, about 70% of resources are converted into waste materials in the processes of mining, cutting and polishing, and the utilization rate of the waste materials is extremely low, so that secondary pollution to the environment is easily caused. How to effectively treat and utilize slag and waste marble powder is a problem to be solved.
In recent years, with the rapid development of society and economy, ordinary concrete has failed to meet the building requirements in certain specific building projects, and therefore, high-strength concrete is widely applied to high-rise buildings, large-span bridge projects and certain special structures as a new building material with excellent physical and mechanical properties and durability. However, the conventional high-strength concrete is not only costly, but also uses a large amount of cement in the production process, so that a new green high-strength concrete is needed in the present stage from the viewpoints of economy and environmental protection.
Disclosure of Invention
The invention aims to provide slag-waste marble powder-based alkali-activated high-strength concrete and a preparation method thereof, so as to solve the problems faced.
In order to achieve the above purpose, the present invention provides the following technical solutions:
one of the technical schemes of the invention is as follows:
the slag-waste marble powder-based alkali-activated high-strength concrete comprises the following raw materials in parts by weight: 338 to 489 parts of mineral powder, 122 to 250 parts of waste marble powder, 121 to 318 parts of water glass, 24 to 59 parts of sodium hydroxide, 4 to 14 parts of composite additive, 28 to 142 parts of water and 1080 parts of fine aggregate.
The invention uses waste marble powder as raw material, greatly improves the utilization rate of the waste marble powder, reasonably treats and utilizes the waste marble powder, prevents secondary pollution, reduces the cost of alkali-activated high-strength concrete and creates certain economic value.
Slag micropowder is also called mineral powder and granulated blast furnace slag powder. The high-fineness and high-activity powder obtained by water quenching blast furnace slag and performing processes such as drying, grinding and the like can effectively improve the compressive strength of concrete and reduce the cost of the concrete by using granulated blast furnace slag powder. Meanwhile, the method has obvious effects of inhibiting alkali aggregate reaction, reducing hydration heat, reducing early temperature cracks of a concrete structure, improving concrete compactness and improving impermeability and erosion resistance.
The invention uses the system compounded by waste marble powder and slag to completely replace cement, and has various performances superior to those of common high-strength concrete, thereby effectively relieving the pollution to the environment caused by the cement production process and reducing the cost. Compared with common concrete, the alkali-activated concrete has smaller energy consumption and less carbon dioxide emission in the production process, and is more beneficial to realizing green development.
Further, the mineral powder is S95 mineral powder, and the basic parameters are as follows: caO is more than or equal to 48wt percent, siO 2 ≥22wt％，Al 2 O 3 More than or equal to 11 weight percent, the loss on ignition is more than or equal to 0.6 weight percent, and the mass fraction of the particles with the fineness of 200 meshes is more than 90 percent.
Further, the basic parameters of the waste marble powder are as follows: caO is more than or equal to 52wt%, loss on ignition is more than or equal to 40wt%, and the mass fraction of particles with fineness of 200 meshes is more than 90%.
Further, the basic parameters of the water glass are as follows: siO (SiO) 2 ≥25wt％，Na 2 O is more than or equal to 6wt percent, and the modulus is 3.2 to 3.7.
Further, the purity of the sodium hydroxide is more than or equal to 99 percent.
Further, the compound additive is a naphthalene water reducer and sodium tetraborate decahydrate which are mixed according to the mass ratio of 1:1.
Further, the naphthalene water reducer is beta-naphthalene sulfonate formaldehyde condensate, na 2 SiO 4 ≥17wt％。
Compared with the traditional water reducer, the water reducer is more suitable for alkali-activated concrete, the fluidity is improved by 15-30% on the premise that the compressive strength in each age is not obviously reduced, and the water reducer is more beneficial to application in specific practical engineering.
Further, the fine aggregate is quartz sand, and the basic parameters are as follows: siO (SiO) 2 ≥97wt％，Fe 2 O 3 Less than or equal to 0.06wt percent, the melting point is 1750 ℃ and the density is 2.65g/cm 3 The mohs hardness was 7.
Further, the mass fraction of the particles with the fineness of 10-20 meshes in the quartz sand is 10-20%, the mass fraction of the particles with the fineness of 20-40 meshes is 20-40%, and the mass fraction of the particles with the fineness of 80-120 meshes is 40-60%.
The second technical scheme of the invention is as follows: the preparation method of the slag-waste marble powder-based alkali-activated high-strength concrete comprises the following steps:
1) Uniformly mixing sodium silicate, sodium hydroxide and water, and standing to obtain an alkali-activated agent;
2) Mixing mineral powder, waste marble powder and a composite additive, and stirring at a low speed to obtain a mixed material;
3) Adding the alkali-activated agent obtained in the step 1) into the mixed material obtained in the step 2), stirring at a low speed, adding quartz sand, and stirring at a high speed to obtain the slag-waste marble powder-based alkali-activated high-strength concrete.
Further, in step 1), the standing time is 6 hours.
Further, in the step 2), the rotating speed of the low-speed stirring is 140+/-5 r/min, and the time is 2-3 min.
Further, in the step 3), the rotation speed of the low-speed stirring is 140+/-5 r/min for 2min, and the rotation speed of the high-speed stirring is 285+/-10 r/min for 2min.
Compared with the prior art, the invention has the following beneficial effects:
(1) The slag-waste marble powder-based alkali-activated high-strength concrete prepared by the method has good physical and mechanical properties, has the characteristics of early strength and high strength, can shorten the construction period to a certain extent in actual engineering, improves the construction efficiency, can reach more than 90MPa in 28 days, and can meet the requirements of most high-rise buildings and large-span engineering on the compressive strength.
(2) Compared with the traditional high-strength concrete with complex preparation process and severe curing conditions, the preparation method provided by the invention only needs to uniformly mix raw materials and then cure the concrete at room temperature or normal temperature, and meanwhile, the raw materials are cheap and easy to obtain, so that the preparation method has a high application value.
Detailed Description
Various exemplary embodiments of the invention will now be described in detail, which should not be considered as limiting the invention, but rather as more detailed descriptions of certain aspects, features and embodiments of the invention. It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
In addition, for numerical ranges in this disclosure, it is understood that each intermediate value between the upper and lower limits of the ranges is also specifically disclosed. Every smaller range between any stated value or stated range, and any other stated value or intermediate value within the stated range, is also encompassed within the invention. The upper and lower limits of these smaller ranges may independently be included or excluded in the range.
Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Although only preferred methods and materials are described herein, any methods and materials similar or equivalent to those described herein can be used in the practice or testing of the present invention. All documents mentioned in this specification are incorporated by reference for the purpose of disclosing and describing the methods and/or materials associated with the documents. In case of conflict with any incorporated document, the present specification will control.
It will be apparent to those skilled in the art that various modifications and variations can be made in the specific embodiments of the invention described herein without departing from the scope or spirit of the invention. Other embodiments will be apparent to those skilled in the art from consideration of the specification of the present invention. The specification and examples of the present invention are exemplary only.
As used herein, the terms "comprising," "including," "having," "containing," and the like are intended to be inclusive and mean an inclusion, but not limited to.
In the following examples, the ore powder used was S95 ore powder, the basic parameters of which were: caO is more than or equal to 48wt percent, siO 2 ≥22wt％，Al 2 O 3 More than or equal to 11 weight percent, the loss on ignition is more than or equal to 0.6 weight percent, and the mass fraction of the particles with the fineness of 200 meshes is more than 90 percent.
In the following examples, the basic parameters of the used waste marble powder were: caO is more than or equal to 52wt%, loss on ignition is more than or equal to 40wt%, and the mass fraction of particles with fineness of 200 meshes is more than 90%.
In the following examples, the basic parameters of the water glass used are: siO (SiO) 2 ≥25wt％，Na 2 O is more than or equal to 6wt percent, and the modulus is 3.2 to 3.7.
In the examples below, sodium hydroxide was used in a purity of 99% or more.
In the following examples, the compound admixture used was a naphthalene water reducing agent and sodium tetraborate decahydrate in a mass ratio of 1:1.
In the following examples, the naphthalene-based water reducer used was a beta-naphthalenesulfonate formaldehyde condensate, the basic parameters of which were: na (Na) 2 SiO 4 ≥17wt％。
In the following examples, the fine aggregate used was silica sand, the basic parameters of which were: siO (SiO) 2 ≥97wt％，Fe 2 O 3 Less than or equal to 0.06wt percent, the melting point is 1750 ℃ and the density is 2.65g/cm 3 Mohs hardness is 7; wherein, the mass fraction of the quartz sand particles with the fineness of 10 to 20 meshes is 10 to 20 percent, the mass fraction of the quartz sand particles with the fineness of 20 to 40 meshes is 20 to 40 percent, and the mass fraction of the quartz sand particles with the fineness of 80 to 120 meshes is 40 to 60 percent.
Example 1
1) Uniformly mixing 121 parts of water glass, 24 parts of sodium hydroxide and 28 parts of water, and standing for 6 hours to obtain an alkali excitant;
2) Adding 338 parts of mineral powder, 122 parts of waste marble powder and 4 parts of composite additive into a stirring pot, and stirring for 2min at a stirring speed of 140r/min to obtain a mixed material;
wherein the composite additive is 2 parts of naphthalene water reducer and 2 parts of sodium tetraborate decahydrate;
3) Adding the alkali-activated agent obtained in the step 1) into the mixed material obtained in the step 2), stirring for 2min at a stirring speed of 140r/min, adding 1080 parts of quartz sand, and stirring for 2min at a stirring speed of 285r/min to obtain slag-waste marble powder-based alkali-activated high-strength concrete.
Example 2
1) Uniformly mixing 212 parts of sodium silicate, 42 parts of sodium hydroxide and 86 parts of water, and standing for 6 hours to obtain an alkali excitant;
2) 489 parts of mineral powder, 122 parts of waste marble powder and 7 parts of composite additive are added into a stirring pot and stirred for 2min at a stirring speed of 140r/min to obtain a mixed material;
wherein the composite additive is 3.5 parts of naphthalene water reducer and 3.5 parts of sodium tetraborate decahydrate;
3) Adding the alkali-activated agent obtained in the step 1) into the mixed material obtained in the step 2), stirring for 2min at a stirring speed of 140r/min, adding 1080 parts of quartz sand, and stirring for 2min at a stirring speed of 285r/min to obtain slag-waste marble powder-based alkali-activated high-strength concrete.
Example 3
1) Uniformly mixing 212 parts of sodium silicate, 42 parts of sodium hydroxide and 86 parts of water, and standing for 6 hours to obtain an alkali excitant;
2) 428 parts of mineral powder, 183 parts of waste marble powder and 7 parts of composite additive are added into a stirring pot and stirred for 2min at a stirring speed of 140r/min to obtain a mixed material;
wherein the composite additive is 3.5 parts of naphthalene water reducer and 3.5 parts of sodium tetraborate decahydrate;
3) Adding the alkali-activated agent obtained in the step 1) into the mixed material obtained in the step 2), stirring for 2min at a stirring speed of 140r/min, adding 1080 parts of quartz sand, and stirring for 2min at a stirring speed of 285r/min to obtain slag-waste marble powder-based alkali-activated high-strength concrete.
Example 4
1) Uniformly mixing 242 parts of sodium silicate, 29 parts of sodium hydroxide and 71 parts of water, and standing for 6 hours to obtain an alkali excitant;
2) 428 parts of mineral powder, 183 parts of waste marble powder and 7 parts of composite additive are added into a stirring pot and stirred for 2min at a stirring speed of 140r/min to obtain a mixed material;
wherein the composite additive is 3.5 parts of naphthalene water reducer and 3.5 parts of sodium tetraborate decahydrate;
3) Adding the alkali-activated agent obtained in the step 1) into the mixed material obtained in the step 2), stirring for 2min at a stirring speed of 140r/min, adding 1080 parts of quartz sand, and stirring for 2min at a stirring speed of 285r/min to obtain slag-waste marble powder-based alkali-activated high-strength concrete.
Example 5
1) Uniformly mixing 318 parts of sodium silicate, 59 parts of sodium hydroxide and 142 parts of water, and standing for 6 hours to obtain an alkali excitant;
2) Adding 489 parts of mineral powder, 250 parts of waste marble powder and 14 parts of composite additive into a stirring pot, and stirring for 2min at a stirring speed of 140r/min to obtain a mixed material;
wherein the composite additive is 7 parts of naphthalene water reducer and 7 parts of sodium tetraborate decahydrate;
3) Adding the alkali-activated agent obtained in the step 1) into the mixed material obtained in the step 2), stirring for 2min at a stirring speed of 140r/min, adding 1080 parts of quartz sand, and stirring for 2min at a stirring speed of 285r/min to obtain slag-waste marble powder-based alkali-activated high-strength concrete.
Comparative example 1
The difference from example 4 is that step 2) is to add 611 parts of mineral powder and 7 parts of composite additive into a stirring pot, and stir for 2min at a stirring speed of 140r/min to obtain a mixed material; wherein the composite additive is 3.5 parts of naphthalene water reducer and 3.5 parts of sodium tetraborate decahydrate.
Comparative example 2
The same as in example 4 except that step 2) was carried out by adding 611 parts of waste marble powder and 7 parts of composite additive into a stirring pot, stirring at 140r/min for 2min to obtain a mixed material; wherein the composite additive is 3.5 parts of naphthalene water reducer and 3.5 parts of sodium tetraborate decahydrate.
Comparative example 3
The same as in example 4 except that step 2) was carried out by adding 428 parts of ore powder and 183 parts of waste marble powder into a stirring pot and stirring at a stirring speed of 140r/min for 2min to obtain a mixed material.
Comparative example 4
The same procedure as in example 4 was repeated except that 428 parts of the ore powder, 183 parts of the waste marble powder and 7 parts of the naphthalene water reducer were added to a stirring pot and stirred at a stirring speed of 140r/min for 2min to obtain a mixed material.
Comparative example 5
The same procedure as in example 4 was repeated except that 428 parts of the ore powder, 183 parts of the waste marble powder, and 7 parts of sodium tetraborate decahydrate were charged into a stirring pot and stirred at a stirring speed of 140r/min for 2min to obtain a mixed material in step 2).
Comparative example 6
The difference is that in the step 2), the naphthalene water reducer is replaced by a polycarboxylate water reducer (main component is polycarboxylate polymer master batch, solid content is more than or equal to 98wt%).
Comparative example 7
The difference is only that in step 2), sodium gluconate (C 6 H 11 NaO 7 ，C 6 H 11 NaO 7 More than or equal to 98 weight percent. ) Instead of sodium tetraborate decahydrate.
Effect verification
The mechanical properties and fluidity of the concretes prepared in examples 1 to 5 and comparative examples 1 to 7 were measured, wherein the compressive strength was measured according to GB/T17671-1999 and the fluidity was measured according to GB/T2419-2005; the measurement results are shown in Table 1.
TABLE 1 Effect verification
As can be seen from the data in Table 1, the slag-waste marble powder-based alkali-activated high-strength concrete prepared in examples 1 to 5 of the present invention has strength and fluidity at each age superior to those of the commercial ordinary high-strength concrete, and has excellent mechanical properties and fluidity, and simultaneously, no need of high-temperature curing, and lower curing cost. In addition, compared with comparative example 1, the mixed addition of the mineral powder and the waste marble powder can better improve the fluidity on the premise of ensuring that the compressive strength in each age is not obviously reduced. Compared with comparative example 2, the invention has greatly improved compressive strength in each age and better fluidity. Compared with comparative example 3, the invention can effectively improve the fluidity of concrete and has better working performance by adding the composite additive. Compared with comparative examples 4-7, the compressive strength and fluidity of the invention are obviously improved at each age.
The foregoing is merely a preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions easily conceivable by those skilled in the art within the technical scope of the present application should be covered in the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. The slag-waste marble powder-based alkali-activated high-strength concrete is characterized by comprising the following raw materials in parts by weight: 338 to 489 parts of mineral powder, 122 to 250 parts of waste marble powder, 121 to 318 parts of water glass, 24 to 59 parts of sodium hydroxide, 4 to 14 parts of composite additive, 28 to 142 parts of water and 1080 parts of fine aggregate.
2. The slag-waste marble powder-based alkali-activated high-strength concrete according to claim 1, wherein the mineral powder is S95 mineral powder, and the basic parameters are as follows: caO is more than or equal to 48wt percent, siO 2 ≥22wt％，Al 2 O 3 More than or equal to 11 weight percent, the loss on ignition is more than or equal to 0.6 weight percent, and the mass fraction of the particles with the fineness of 200 meshes is more than 90 percent.
3. The slag-waste marble powder based alkali-activated high-strength concrete according to claim 1, wherein the basic parameters of the waste marble powder are: caO is more than or equal to 52wt%, loss on ignition is more than or equal to 40wt%, and the mass fraction of particles with fineness of 200 meshes is more than 90%.
4. The slag-waste marble-based alkali-activated high-strength concrete according to claim 1, wherein the basic parameters of the water glass are: siO (SiO) 2 ≥25wt％，Na 2 O is more than or equal to 6wt percent, and the modulus is 3.2 to 3.7.
5. The slag-waste marble powder based alkali-activated high-strength concrete according to claim 1, wherein the purity of the sodium hydroxide is not less than 99%.
6. The slag-waste marble powder-based alkali-activated high-strength concrete according to claim 1, wherein the composite additive is a naphthalene water reducer and sodium tetraborate decahydrate mixed according to a mass ratio of 1:1.
7. The slag-waste marble powder based alkali-activated high-strength concrete according to claim 1, wherein the fine aggregate is quartz sand, and the basic parameters are: siO (SiO) 2 ≥97wt％，Fe 2 O 3 Less than or equal to 0.06wt percent, the melting point is 1750 ℃ and the density is 2.65g/cm 3 The mohs hardness was 7.
8. The slag-waste marble powder based alkali-activated high-strength concrete according to claim 7, wherein the quartz sand has a fineness of 10-20 meshes, a mass fraction of 10-20%, a mass fraction of 20-40% and a mass fraction of 40-60% of particles with a fineness of 20-40 meshes.
9. A method for preparing slag-waste marble powder-based alkali-activated high-strength concrete according to any one of claims 1 to 8, comprising the steps of:
1) Uniformly mixing sodium silicate, sodium hydroxide and water, and standing to obtain an alkali-activated agent;
2) Mixing mineral powder, waste marble powder and a composite additive, and stirring at a low speed to obtain a mixed material;
3) Adding the alkali-activated agent obtained in the step 1) into the mixed material obtained in the step 2), stirring at a low speed, adding quartz sand, and stirring at a high speed to obtain the slag-waste marble powder-based alkali-activated high-strength concrete.
10. The method according to claim 9, wherein in step 1), the time of the standing is 6 hours; in the step 2), the rotating speed of the low-speed stirring is 140+/-5 r/min, and the time is 2-3 min; in the step 3), the rotating speed of the low-speed stirring is 140+/-5 r/min for 2min, and the rotating speed of the high-speed stirring is 285+/-10 r/min for 2min.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110067341A (en) * | 2009-12-14 | 2011-06-22 | 한국건설기술연구원 | Non-sintering inorganic binder comprising blast-furnace slag and mortar composition using thereof |
| CN102603217A (en) * | 2011-12-02 | 2012-07-25 | 中国人民解放军63653部队 | Alkali-activated carbonate composite cementing material and preparation method thereof |
| CN106032313A (en) * | 2015-12-02 | 2016-10-19 | 上海久坚加固科技股份有限公司 | Alkali-activated slag powder geopolymer mortar for structure reinforcement and preparation method thereof |
| CN110041028A (en) * | 2019-04-26 | 2019-07-23 | 四川衡鼎建材有限公司 | A kind of regeneration concrete and preparation method thereof using building waste |
| CN115304295A (en) * | 2022-07-15 | 2022-11-08 | 桂林理工大学 | High-doped waste marble powder-slag-based alkali-activated cementing material and preparation method thereof |
-
2023
- 2023-05-11 CN CN202310527147.5A patent/CN116462484A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110067341A (en) * | 2009-12-14 | 2011-06-22 | 한국건설기술연구원 | Non-sintering inorganic binder comprising blast-furnace slag and mortar composition using thereof |
| CN102603217A (en) * | 2011-12-02 | 2012-07-25 | 中国人民解放军63653部队 | Alkali-activated carbonate composite cementing material and preparation method thereof |
| CN106032313A (en) * | 2015-12-02 | 2016-10-19 | 上海久坚加固科技股份有限公司 | Alkali-activated slag powder geopolymer mortar for structure reinforcement and preparation method thereof |
| CN110041028A (en) * | 2019-04-26 | 2019-07-23 | 四川衡鼎建材有限公司 | A kind of regeneration concrete and preparation method thereof using building waste |
| CN115304295A (en) * | 2022-07-15 | 2022-11-08 | 桂林理工大学 | High-doped waste marble powder-slag-based alkali-activated cementing material and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 王磊: "聚羧酸减水剂对硫铝酸盐水泥的缓凝减水作用", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》, no. 04, 15 April 2022 (2022-04-15), pages 19 - 20 * |
| 顾泽宇等: "碱激发矿粉胶凝材料的力学性能及微观研究", 《粉煤灰综合利用》, no. 6, 25 December 2019 (2019-12-25), pages 1 - 1 * |
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