CN114230224B - Low-carbon impervious full-solid waste grouting material and preparation method and application thereof - Google Patents
Low-carbon impervious full-solid waste grouting material and preparation method and application thereof Download PDFInfo
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- CN114230224B CN114230224B CN202111574977.0A CN202111574977A CN114230224B CN 114230224 B CN114230224 B CN 114230224B CN 202111574977 A CN202111574977 A CN 202111574977A CN 114230224 B CN114230224 B CN 114230224B
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- 239000002910 solid waste Substances 0.000 title claims abstract description 112
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 94
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 97
- 239000002131 composite material Substances 0.000 claims abstract description 62
- 239000011159 matrix material Substances 0.000 claims abstract description 60
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 48
- 239000000440 bentonite Substances 0.000 claims abstract description 19
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 19
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 19
- 239000011707 mineral Substances 0.000 claims abstract description 19
- 239000010881 fly ash Substances 0.000 claims abstract description 18
- 239000002893 slag Substances 0.000 claims abstract description 18
- 239000000843 powder Substances 0.000 claims abstract description 17
- 239000010440 gypsum Substances 0.000 claims abstract description 15
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 15
- 239000000654 additive Substances 0.000 claims abstract description 14
- 230000000996 additive effect Effects 0.000 claims abstract description 14
- 238000011049 filling Methods 0.000 claims abstract description 6
- 239000000835 fiber Substances 0.000 claims description 53
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 30
- 239000002994 raw material Substances 0.000 claims description 22
- 150000001875 compounds Chemical class 0.000 claims description 16
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- 230000003487 anti-permeability effect Effects 0.000 claims description 12
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 10
- 239000012190 activator Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 5
- 229920002239 polyacrylonitrile Polymers 0.000 claims description 5
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 5
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 5
- 235000011152 sodium sulphate Nutrition 0.000 claims description 5
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- 238000006243 chemical reaction Methods 0.000 description 4
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- KMWBBMXGHHLDKL-UHFFFAOYSA-N [AlH3].[Si] Chemical class [AlH3].[Si] KMWBBMXGHHLDKL-UHFFFAOYSA-N 0.000 description 1
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- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 description 1
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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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- 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
- C04B28/14—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 calcium sulfate cements
- C04B28/142—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 calcium sulfate cements containing synthetic or waste calcium sulfate cements
- C04B28/144—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 calcium sulfate cements containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being a flue gas desulfurization product
-
- 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
- C04B7/00—Hydraulic cements
- C04B7/14—Cements containing slag
- C04B7/147—Metallurgical slag
-
- 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
- C04B7/00—Hydraulic cements
- C04B7/24—Cements from oil shales, residues or waste other than slag
-
- 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
- C04B7/00—Hydraulic cements
- C04B7/24—Cements from oil shales, residues or waste other than slag
- C04B7/243—Mixtures thereof with activators or composition-correcting additives, e.g. mixtures of fly ash and alkali activators
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
-
- 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
- C04B2111/00017—Aspects relating to the protection of the environment
-
- 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
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00724—Uses not provided for elsewhere in C04B2111/00 in mining operations, e.g. for backfilling; in making tunnels or galleries
-
- 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
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent 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
- C04B2111/34—Non-shrinking or non-cracking 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
- C04B2111/70—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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
-
- 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)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The application belongs to the technical field of urban subway shield/TBM wall rear synchronous grouting materials, and relates to a low-carbon impervious full-solid waste grouting material and a preparation method and application thereof. The full solid waste grouting material comprises the following components in parts by weight: 160-270 parts of a matrix material; 0-12 parts of composite additive except 0; 40-70 parts of water. The matrix material comprises the following components in parts by weight: 2-7 parts of desulfurized gypsum, 20-40 parts of slag, 5-13 parts of bentonite, 30-60 parts of fly ash, 7-17 parts of mineral powder and 60-180 parts of fine aggregate. The composite additive comprises the following components: polycarboxylate water reducer, high polymer and excitant. The application realizes the high value-added utilization of bulk solid waste by an alkali excitation technology, and prepares and obtains the low-carbon impervious full-solid waste grouting material. The material is used for synchronous grouting behind urban subway shield/TBM walls, can realize green filling behind tunnel walls, and simultaneously relieves the problem of environmental pollution caused by stacking a large amount of solid wastes.
Description
Technical Field
The application belongs to the technical field of urban subway shield/TBM wall rear synchronous grouting materials, and mainly relates to a low-carbon impervious full-solid waste grouting material and a preparation method thereof.
Background
The disclosure of this background section is only intended to increase the understanding of the general background of the application and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art already known to those of ordinary skill in the art.
In the aspect of subway tunnel construction, the shield/TBM tunnel excavation has the advantages of small influence on ground traffic, high automation degree, remarkably shortened construction period, high stratum applicability and the like, so that the method is widely applied to tunnel construction. However, urban subways face high disaster risks in the process of excavation construction, wherein the occurrence of cracking and water leakage of the segment lining is the most common disaster type in subway construction and operation period. In the shield/TBM ring-by-ring construction process, gaps are generated between the segment and the stratum when shield tails are separated from the segment lining, and meanwhile, if the gaps of the shield tails are not filled, the surrounding stratum is likely to be displaced towards the segment due to the disturbance of shield/TBM tunneling on the surrounding stratum, so that the double problems of stratum deformation and stress of the segment lining structure are caused.
Synchronous grouting is a technology for filling gaps while a cutter head advances forward and a shield tail gap is formed through a synchronous grouting system and grouting holes positioned on shield tails and duct pieces. The synchronous grouting technology solves the problem of time lag between the generation of a shield tail gap and grouting filling to the greatest extent, so that the deformation of a stratum can be effectively relieved, the position of a segment lining is fixed, the stress uniformity of the segment lining is ensured, and meanwhile, the segment is prevented from cracking due to uneven stress. In addition, the shield/TBM synchronous grouting reinforcement ring is used as a first layer protection ring for the leakage water of the tunnel, so that the impermeability of the shield tunnel is greatly improved.
The common grouting reinforcement material is ordinary silicate cement single-liquid slurry, and cement has the defects of low calculus rate, high hydration heat and easiness in generating cracks, so that the structural strength and the impermeability are greatly reduced, and the treatment effect of a water leakage engineering is seriously influenced. At the same time, cement production will produce significant carbon emissions, which is reported to be about 33.4 million tons in 2020, contrary to the urgent situation of global climate control and the goal of reducing carbon emissions.
Disclosure of Invention
In view of the above problems, a main object of the present application is to further improve the anti-permeability effect of the simultaneous grouting material and reduce the carbon emission of the grouting material. The application provides a low-carbon impervious full-solid waste synchronous grouting material and a preparation method thereof. The full solid waste grouting material has the properties of strong impermeability, high toughness, long-term hydration and the like, and is beneficial to realizing the high added value utilization of bulk solid waste.
In order to achieve the technical purpose, the application adopts the following technical scheme:
in a first aspect of the present application, there is provided a composite admixture for a low-carbon impervious all-solid waste grouting material, comprising: an alkaline excitant, a high-efficiency water reducing agent and fiber.
The application researches a novel green material, and is applied to such engineering to realize safe tunnel excavation and green, low-carbon and sustainable development.
The application provides a preparation method of a composite additive for a low-carbon anti-permeability full-solid waste grouting material, which comprises the following steps:
and uniformly mixing the composite alkaline excitant, the high-efficiency water reducer and the fiber to obtain the composite alkaline excitant.
The application provides a matrix material for a low-carbon anti-seepage type all-solid-waste grouting material, which comprises the following raw materials in parts by weight: 2-7 parts of desulfurized gypsum, 20-40 parts of slag, 5-13 parts of bentonite, 30-60 parts of fly ash, 7-17 parts of mineral powder and 60-180 parts of fine aggregate.
The application provides a low-carbon impervious full-solid waste grouting material, which comprises the following raw materials in parts by weight: 160-270 parts of the matrix material; 0-12 parts of the composite additive except 0; 40-70 parts of water.
In a fifth aspect of the present application, a method for preparing a low-carbon anti-permeability type all-solid-waste grouting material is provided, comprising:
weighing various raw materials according to the weight ratio;
uniformly mixing desulfurized gypsum, slag, bentonite, fly ash, mineral powder and fine aggregate according to a proportion to prepare a matrix material;
and uniformly mixing the matrix material, the composite additive and water according to a proportion to prepare the low-carbon anti-permeability full-solid waste grouting material.
In a sixth aspect of the application, the use of the above described all solid waste grouting material in a barrier filling is provided.
The application has the beneficial effects that:
(1) The application is intended to carry out high-value-added utilization on a large amount of solid waste, and prepares the solid waste into a shield synchronous grouting material which is used for urban subway shield/TBM synchronous impervious grouting, and simultaneously, the problem of environmental pollution caused by stacking a large amount of solid waste is relieved.
(2) The application provides a composite additive aiming at the problems of strong potential activity and weak hydration capacity of a full solid waste cementing material system. The potential gelation activity of the matrix material is stimulated through the excitation toughening effect of the composite additive, the gelation structure of the gelatinous body is recombined, and the cementing interconnection degree of the gelatinous body is improved, so that the impermeability and toughness of the grouting material are enhanced, and the engineering application conditions of the matrix material are given.
(3) The method has the advantages of simplicity, low cost, universality and easiness in large-scale production.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application.
FIG. 1 is a schematic illustration of shield/TBM synchronous seepage-proofing synchronous grouting. Starting from the outermost ring, the first circle in fig. 1 represents a shield shell, which is called shield shell for short, the first circle represents grouting material filled in a gap at the tail of the shield, namely the range of synchronous grouting of the application, the second circle represents a tunnel segment, and the innermost circle represents a tunnel.
FIG. 2 is a microscopic electron microscope scan of a low carbon impervious full solid waste material according to an embodiment of the application.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the application. Unless defined otherwise, 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 application belongs.
In a first aspect, the present application provides a composite admixture comprising the following components: an alkaline excitant, a high-efficiency water reducing agent and fiber.
Slag, mineral powder and fly ash are solid emissions generated in the high-temperature industrial process, amorphous glass bodies with potential gelation activity are formed in the high-temperature reaction and cooling processes, the glass bodies hardly react with water, but are subjected to depolymerization and repolymerization into hardened colloid in an alkaline environment provided by a composite alkaline activator, and the macroscopic appearance is that the strength is continuously increased. The high-efficiency water reducer is dissociated into macromolecular anions in the solution, and the main chain of the high-efficiency water reducer is adsorbed on the surfaces of solid waste particles and hydration products, so that electrostatic repulsive force and steric hindrance repulsive force among the particles are increased, free water in the system is increased, and the flow performance of the system is improved. The fiber used in the application is polyacrylonitrile fiber, which can improve the macroscopic mechanical property of a gel system, maintain the volume stable, relieve the stress concentration and inhibit the expansion of microcracks. In conclusion, the inorganic-organic-fiber composite additive can well improve the macroscopic mechanical property, the fluidity, the volume stability and the impermeability and durability of the green material.
In some embodiments, the mass ratio of the composite alkaline activator, the high efficiency water reducing agent and the fiber is: 0-8:0-3:0-1.
Further, the mass ratio of the composite alkaline excitant, the high-efficiency water reducer and the fiber is as follows: 2-8:0-2:0-0.75.
Further, the mass ratio of the composite alkaline excitant, the high-efficiency water reducer and the fiber is as follows: 2-6:0-1.5:0-0.5.
Further, the mass ratio of the composite alkaline excitant, the high-efficiency water reducer and the fiber is as follows: 2-4:0-1.5:0-0.5.
In some embodiments, the complex alkaline activator consists of sodium hydroxide, sodium carbonate, and sodium sulfate.
Further, in the excitant, the mass ratio of sodium hydroxide to sodium carbonate to sodium sulfate is 3:2:1.
In some embodiments, the fibers are polyacrylonitrile fibers.
In a second aspect, the present application provides a method for preparing the composite admixture, comprising the steps of:
mixing the composite alkaline excitant, the high-efficiency water reducer and the fiber according to a certain proportion, and uniformly stirring to obtain the composite alkaline excitant.
In a third aspect, the application provides a matrix material, comprising the following components in parts by weight: 2-7 parts of desulfurized gypsum, 20-40 parts of slag, 5-13 parts of bentonite, 30-60 parts of fly ash, 7-17 parts of mineral powder and 60-180 parts of fine aggregate.
Wherein, the desulfurized gypsum, slag, fly ash and mineral powder form a composite gel system, the bentonite plays a role in improving the stability of the system, and the fine aggregate plays a role in supporting a framework.
The addition ratio of bentonite and fine aggregate should be determined according to the composite gel system. The matrix material is prepared only by using a composite gel system, so that the requirement of urban subway shield/TBM synchronous impervious grouting can not be well met. The all-solid-waste system matrix material has good compatibility and hydration synergy, and can meet the strength requirement of synchronous grouting under the action of the composite alkaline excitant. Bentonite is highly dispersed in water and overlapped into a net shape, so that free water in the system is bound, and the matrix material is endowed with better stability; after the bentonite is soaked in water, the mineral crystal layer spacing of the bentonite is filled with water molecules, so that the bentonite macroscopically shows a certain expansion characteristic, the problem of later volume retraction of slurry calculus can be effectively relieved, and the impermeability of the material is greatly improved. Meanwhile, the solid waste material is used as an industrial byproduct, and the carbon emission caused by the production is greatly reduced compared with that of the cement material. The carbon emission of the all-solid waste matrix material is reduced by 78% compared with cement on average, the carbon emission of the all-solid waste system is further reduced by adding the fine aggregate, and the carbon emission of the final all-solid waste grouting material is only 12.5% of that of the cement material, so that the all-solid waste grouting material meets the low-carbon, green and sustainable development concept and the aim of reducing carbon emission.
The four reasons for solid waste are selected:
the slag is utilized to carry out shield synchronous grouting, so that the stacking problem of waste slag and the pollution problem to the environment can be effectively solved, and huge economic benefits can be brought.
Mineral fines are minerals with latent hydraulic properties. The chemical composition contains a large amount of CaO (35-50%), and active SiO 2 And Al 2 O 3 . Reactive SiO 2 And Al 2 O 3 The water-based paint has hydraulic property under the excitation action of CaO, and can generate strong hydration effect when being matched with an alkaline excitant, thereby greatly improving the strength of the system.
The fly ash is a residual product of the combustion of the coal powder in the thermal power plant, and belongs to industrial waste residues. The main chemical components are silicon aluminum compounds, and the content of the active amorphous glass body is up to 52% -89%, so that volcanic ash reaction can occur under alkaline excitation to generate hydrated calcium silicate and hydrated calcium aluminate with gelation property. In addition, glass beads in the fly ash can fill gaps among mixed slurry particles, so that the rheological property of the slurry is improved, the effect of reducing water is achieved, and various properties of the material are improved.
The desulfurization gypsum is a byproduct of flue gas desulfurization of thermal power generation. The density of the serous fluid calculus body can be increased through the self reaction, so that the serous fluid calculus body has the characteristic of improving the early strength of a matrix material, can well improve the erosion resistance and the impermeability of the serous fluid calculus body, and has comprehensive utilization value.
In a fourth aspect, the application provides a low-carbon impervious full-solid waste grouting material, which comprises the following components in parts by weight: 160-270 parts of matrix material; 0-12 parts of the composite additive, excluding 0; 40-70 parts of water.
In some embodiments, the mass percentage of the composite alkaline activator in the composite admixture in the solid waste grouting material is 0-1.4%.
The high-temperature industrial solid wastes such as slag, fly ash, mineral powder and the like have potential gelling activity, and amorphous glass bodies contained in the high-temperature industrial solid wastes can be subjected to depolymerization and repolymerization into hardened colloid under an alkaline environment. This reaction causes a slight volume expansion of the body of the stone. In addition, too high or too low a content of alkali-activator is detrimental to the adequate gelling of the material, so the strength of the system can be adjusted by adjusting the amount of activator used. When the content of the alkali-activator is higher than 1.4%, the strength of the calculi body is reduced and the 28d expansion rate is larger. Therefore, the mass fraction of the composite alkaline excitant in the material system is more reasonable in the range of 0% -1.4%.
In some embodiments, the mass percentage of the high efficiency water reducing agent in the composite admixture in the solid waste grouting material is 0-0.7%.
Further, the mass percentage of the high-efficiency water reducer in the performance optimizing agent in the solid waste grouting material is 0-0.7%.
The high-efficiency water reducer has electrostatic repulsive force effect, steric hindrance effect and lubrication effect, and can increase the fluidity of cement slurry from the three angles. Experimental results show that the one-thousandth doping amount of the high-efficiency water reducer has great influence on the fluidity of the system. When the content of the high-efficiency water reducing agent is more than 0.7%, the coagulation time of the system is too long, so that the engineering requirement of the slurry cannot be met. Therefore, the content of the high-efficiency water reducing agent of the low-carbon anti-permeability type full-solid waste synchronous grouting material is lower than or equal to 0.7 percent.
In some embodiments, the mass percent of fibers in the composite admixture in the solid waste grouting material is 0-0.2%.
Polyacrylonitrile fibers have been reported to have an obvious improvement effect on the mechanical strength of materials, and the reason for this effect is that the fibers are uniformly dispersed in a material system, so that cracks and dimensions inside the materials can be reduced, the compressive strength and flexural strength of the material system are further improved, and the toughness of the materials is remarkably improved. When the blending amount of the fiber is more than 0.2%, the improvement effect of the continuous increase of the fiber content on the mechanical property of the system is not obvious. Therefore, considering the economy of materials, the fiber content of the low-carbon impervious full-solid waste synchronous grouting material should be lower than or equal to 0.2%.
In some embodiments, the low-carbon impervious full-solid waste synchronous grouting material comprises the following components in parts by weight: 160 parts of matrix material, 2 parts of composite alkaline excitant, 0 part of high-efficiency water reducer, 0.25 part of fiber and 40 parts of water.
In some embodiments, the low-carbon impervious full-solid waste synchronous grouting material comprises the following components in parts by weight: 160 parts of matrix material, 0 part of composite alkaline excitant, 3 parts of high-efficiency water reducer, 1 part of fiber and 70 parts of water.
In some embodiments, the low-carbon impervious full-solid waste synchronous grouting material comprises the following components in parts by weight: 215 parts of matrix material, 4 parts of composite alkaline excitant, 1 part of high-efficiency water reducer, 0.25 part of fiber and 55 parts of water.
In some embodiments, the low-carbon impervious full-solid waste synchronous grouting material comprises the following components in parts by weight: 215 parts of matrix material, 8 parts of composite alkaline excitant, 2 parts of high-efficiency water reducer, 0.75 part of fiber and 55 parts of water.
In some embodiments, the low-carbon impervious full-solid waste synchronous grouting material comprises the following components in parts by weight: 270 parts of matrix material, 6 parts of composite alkaline excitant, 1 part of high-efficiency water reducer, 0 part of fiber and 70 parts of water.
In some embodiments, the low-carbon impervious full-solid waste synchronous grouting material comprises the following components in parts by weight: 270 parts of matrix material, 2 parts of composite alkaline excitant, 1.5 parts of high-efficiency water reducer, 0.5 part of fiber and 40 parts of water.
In a fifth aspect, the application provides a preparation method of the all-solid waste grouting material, comprising the following steps:
weighing various raw materials according to the weight ratio;
uniformly mixing desulfurized gypsum, slag, bentonite, fly ash, mineral powder and fine aggregate according to a proportion to prepare a grouting matrix material;
and uniformly mixing the matrix material, the composite additive and water according to a proportion to prepare the low-carbon anti-permeability full-solid waste synchronous grouting material.
In some embodiments, the fineness of the matrix material is greater than 425 mesh, the fine aggregate is medium fine sand, and the average particle size is 0.25mm to 0.5mm.
In a sixth aspect, the application provides the use of the all-solid waste grouting material in synchronous seepage prevention.
The application will now be described in further detail with reference to the following specific examples, which should be construed as illustrative rather than limiting.
In the following examples, the composite alkaline activator consisted of sodium hydroxide, sodium carbonate and sodium sulfate in a mass ratio of 3:2:1.
The high-efficiency water reducer is Jin Naite-brand polycarboxylate water reducer and is purchased from Ji-nan Xin Yi-Jia chemical industry Co.
The fibers are polyacrylonitrile fibers.
Example 1
A low-carbon impervious full-solid waste synchronous grouting material and a preparation method thereof comprise the following steps:
step one: grinding solid components except fine aggregate in a matrix material to a fineness of more than 425 meshes by using a planetary ball mill, and sieving by using a sieving machine for later use;
step two: the raw materials are weighed according to mass fraction, and comprise 160 parts of matrix material, 2 parts of composite alkaline excitant, 0 part of high-efficiency water reducer, 0.25 part of fiber and 40 parts of water.
The matrix material comprises the following components in parts by weight: 2 parts of desulfurized gypsum, 30 parts of slag, 5 parts of bentonite, 30 parts of fly ash, 7 parts of mineral powder and 60 parts of fine aggregate.
Step three: and placing the weighed raw materials into a stirrer for fully stirring.
Step four: the stirred material was left to stand at 25℃with 90% humidity for 28d.
The low-carbon impervious full-solid waste synchronous grouting material prepared in the embodiment is subjected to slurry fluidity, volume shrinkage rate of a stone body, permeability coefficient of the stone body and compressive and flexural strength test, and test results are shown in tables 1-1, 1-2, 1-3 and 1-4:
TABLE 1-1 Low carbon anti-permeation type full solid waste synchronous grouting material slurry fluidity
The size of the slurry fluidity can intuitively reflect the flow capacity of the slurry. The greater the fluidity, the more fluid the slurry is able to flow, and the greater the corresponding diffusion range. For synchronous grouting, proper slurry fluidity is a precondition for ensuring that the material can fully exert the filling effect.
TABLE 1-2 Low carbon impervious full solid waste synchronous grouting material calculus 28d shrinkage
The shrinkage of the stone body 28d can intuitively reflect the volume change of the stone body. When the numerical value is positive, the volume of the calculus body is contracted; when the value is negative, the volume of the calculus body is expanded. Experimental results show that the volume of the calculi body slightly contracts under the proportion.
TABLE 1-3 calculus 28d permeability coefficient of low-carbon impervious full-solid waste synchronous grouting material
The permeability coefficient can intuitively reflect the water permeability of the stone body. The larger the permeability coefficient is, the stronger the water permeability of the material is, and the worse the impermeability is; the smaller the permeability coefficient, the weaker the material permeability, and the better the impermeability. Experimental results show that the 28d impervious capacity of the calculi body is stronger under the proportion.
Table 1-4 low carbon impervious full solid waste synchronous grouting material stone 28d compression and breaking strength
The compressive strength and the flexural strength can intuitively reflect the capability of the calculus body to resist external force damage. The larger the compressive strength is, the stronger the capability of the stone body to resist the water pressure and the surrounding rock pressure is; the greater the flexural strength, the better the toughness of the stone body and the greater the ability to absorb energy during plastic deformation and fracture. The test result shows that the 28d compressive flexural strength of the stone body is stronger under the proportion, and the flexural ratio is 0.22. Compared with the traditional cement-based material, the grouting material has higher folding ratio.
Example 2
A low-carbon impervious full-solid waste synchronous grouting material and a preparation method thereof comprise the following steps:
step one: grinding solid components except fine aggregate in a matrix material to a fineness of more than 425 meshes by using a planetary ball mill, and sieving by using a sieving machine for later use;
step two: the raw materials are weighed according to mass fraction, and comprise 160 parts of matrix material, 0 part of composite alkaline excitant, 3 parts of high-efficiency water reducer, 1 part of fiber and 70 parts of water.
The matrix material comprises the following components in parts by weight: 7 parts of desulfurized gypsum, 20 parts of slag, 3 parts of bentonite, 50 parts of fly ash, 17 parts of mineral powder and 120 parts of fine aggregate.
Step three: and placing the weighed raw materials into a stirrer for fully stirring.
Step four: the stirred material was left to stand at 25℃with 90% humidity for 28d.
The low-carbon impervious full-solid waste synchronous grouting material prepared in the embodiment is subjected to slurry fluidity, volume shrinkage rate of a stone body, permeability coefficient of the stone body and compressive and flexural strength test, and test results are shown in tables 2-1, 2-2, 2-3 and 2-4:
TABLE 2-1 slurry fluidity of Low carbon anti-permeation type full solid waste synchronous grouting material
Experimental results show that the fluidity of the slurry can be greatly improved by simultaneously improving the water-gel ratio of the material and adding more water reducer, and the addition amount of water and water reducer in the system should be reduced.
TABLE 2-2 Low carbon impervious full solid waste synchronous grouting material calculus 28d shrinkage
Experimental results show that the compound alkaline excitant is not added, and the addition ratio of the matrix material to water is smaller, so that the volume of the calculi body is greatly shrunk.
Table 2-3 calculus 28d permeability coefficient of Low-carbon impervious full solid waste synchronous grouting material
Experimental results show that the hydration degree of the system is lower due to the fact that no compound alkaline excitant is added, and the holes of the stone body are more, so that the 28d stone body permeability coefficient is larger.
Table 2-4 Low carbon impervious full solid waste synchronous grouting material stone 28d compression and breaking strength
Experimental results show that the hydration degree of the system is lower due to the fact that no compound alkaline excitant is added, the holes of the stone body are more, and the capability of resisting external force damage is very weak, so that the 28d compressive strength and the flexural strength are smaller. In addition, as the fiber with higher content is added, the folding pressure of the calculi body is larger and is 0.255.
Example 3
A low-carbon impervious full-solid waste synchronous grouting material and a preparation method thereof comprise the following steps:
step one: grinding solid components except fine aggregate in a matrix material to a fineness of more than 425 meshes by using a planetary ball mill, and sieving by using a sieving machine for later use;
step two: the raw materials are weighed according to mass fraction, and comprise 215 parts of matrix material, 4 parts of composite alkaline excitant, 1 part of high-efficiency water reducer, 0.25 part of fiber and 55 parts of water.
The matrix material comprises the following components in parts by weight: 4 parts of desulfurized gypsum, 30 parts of slag, 9 parts of bentonite, 40 parts of fly ash, 12 parts of mineral powder and 120 parts of fine aggregate.
Step three: and placing the weighed raw materials into a stirrer for fully stirring.
Step four: the stirred material was left to stand at 25℃with 90% humidity for 28d.
The low-carbon impervious full-solid waste synchronous grouting material prepared in the embodiment is subjected to slurry fluidity, volume shrinkage rate of a stone body, permeability coefficient of the stone body and compressive and flexural strength test, and test results are shown in tables 3-1, 3-2, 3-3 and 3-4:
TABLE 3-1 slurry fluidity of Low carbon anti-permeation type full solid waste synchronous grouting material
Experimental results show that the slurry with the proportion has good fluidity, and can meet the fluidity requirement of synchronous grouting engineering.
TABLE 3-2 Low carbon impervious full solid waste synchronous grouting material calculus 28d shrinkage
Experimental results show that the addition amount of the proper compound alkaline excitant and the addition ratio of the proper matrix material and water can lead the volume of the stone body to generate micro expansion.
TABLE 3-3 low carbon permeation resistance type full solid waste synchronous grouting material calculus 28d permeability coefficient
Experimental results show that the proper adding amount of the compound alkaline excitant and the proper adding proportion of the matrix material and water can greatly improve the impermeability of the calculi.
Table 3-4 Low carbon impervious full solid waste synchronous grouting material stone 28d compression and breaking strength
Experimental results show that the addition amount of the proper composite alkaline excitant and the addition ratio of the proper matrix material and water can greatly improve the compression and bending strength of the calculi. In addition, the folding pressure of the calculus body is relatively large and is 0.223 under the proportion because a small amount of fiber is added.
Example 4
A low-carbon impervious full-solid waste synchronous grouting material and a preparation method thereof comprise the following steps:
step one: grinding solid components except fine aggregate in a matrix material to a fineness of more than 425 meshes by using a planetary ball mill, and sieving by using a sieving machine for later use;
step two: the raw materials are weighed according to mass fraction, and comprise 215 parts of matrix material, 8 parts of composite alkaline excitant, 2 parts of high-efficiency water reducer, 0.75 part of fiber and 55 parts of water.
The matrix material comprises the following components in parts by weight: 2 parts of desulfurized gypsum, 40 parts of slag, 6 parts of bentonite, 60 parts of fly ash, 17 parts of mineral powder and 180 parts of fine aggregate.
Step three: and placing the weighed raw materials into a stirrer for fully stirring.
Step four: the stirred material was left to stand at 25℃with 90% humidity for 28d.
The low-carbon impervious full-solid waste synchronous grouting material prepared in the embodiment is subjected to slurry fluidity, volume shrinkage rate of a stone body, permeability coefficient of the stone body and compressive and flexural strength test, and test results are shown in tables 4-1, 4-2, 4-3 and 4-4:
TABLE 4-1 slurry fluidity of Low carbon anti-permeation type full solid waste synchronous grouting material
Experimental results show that the slurry with the proportion has good fluidity, and can meet the fluidity requirement of synchronous grouting engineering.
TABLE 4-2 Low carbon impervious full solid waste synchronous grouting material calculus 28d shrinkage
Experimental results show that the excessive addition of the compound alkaline excitant causes large volume expansion of 28d calculi, so that the addition amount of the excitant is controlled during proportioning design.
TABLE 4-3 calculus 28d permeability coefficient of low-carbon impervious full-solid waste synchronous grouting material
Experimental results show that the 28d stone body permeability resistance is reduced by more compound alkaline excitant.
Table 4-4 Low carbon impervious full solid waste synchronous grouting material stone 28d compression and breaking strength
Experimental results show that the 28d stone body has reduced compressive and flexural strength due to the addition of more compound alkaline excitant. In addition, as the fiber with higher content is added, the folding pressure of the calculus body is larger and is 0.258.
Example 5
A low-carbon impervious full-solid waste synchronous grouting material and a preparation method thereof comprise the following steps:
step one: grinding solid components except fine aggregate in a matrix material to a fineness of more than 425 meshes by using a planetary ball mill, and sieving by using a sieving machine for later use;
step two: weighing raw materials according to mass fraction, wherein the raw materials comprise 270 parts of matrix material, 6 parts of composite alkaline excitant, 1 part of high-efficiency water reducer, 0 part of fiber and 70 parts of water.
The matrix material comprises the following components in parts by weight: 4 parts of desulfurized gypsum, 20 parts of slag, 8 parts of bentonite, 40 parts of fly ash, 7 parts of mineral powder and 60 parts of fine aggregate.
Step three: and placing the weighed raw materials into a stirrer for fully stirring.
Step four: the stirred material was left to stand at 25℃with 90% humidity for 28d.
The low-carbon impervious full-solid waste synchronous grouting material prepared in the embodiment is subjected to slurry fluidity, volume shrinkage rate of a stone body, permeability coefficient of the stone body and compressive and flexural strength test, and test results are shown in tables 5-1, 5-2, 5-3 and 5-4:
TABLE 5-1 slurry flowability of Low carbon anti-permeation type full solid waste synchronous grouting material
Experimental results show that the slurry with the proportion has good fluidity, and can meet the fluidity requirement of synchronous grouting engineering.
TABLE 5-2 Low carbon impervious full solid waste synchronous grouting material calculus 28d shrinkage
Experimental results show that the excessive addition of the compound alkaline excitant causes large volume expansion of 28d calculi, so that the addition amount of the excitant is controlled during proportioning design.
TABLE 5-3 calculus 28d permeability coefficient of low-carbon impervious full-solid waste synchronous grouting material
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Experimental results show that the 28d stone body permeability resistance is reduced by more compound alkaline excitant.
Table 5-4 Low carbon impervious full solid waste synchronous grouting material stone 28d compression and breaking strength
Experimental results show that the 28d stone body has reduced compressive and flexural strength due to the addition of more compound alkaline excitant. In addition, since no fiber is added, the folding pressure of the stone body is smaller at the ratio of 0.197.
Example 6
A low-carbon impervious full-solid waste synchronous grouting material and a preparation method thereof comprise the following steps:
step one: grinding solid components except fine aggregate in a matrix material to a fineness of more than 425 meshes by using a planetary ball mill, and sieving by using a sieving machine for later use;
step two: weighing raw materials according to mass fraction, wherein the raw materials comprise 270 parts of matrix material, 2 parts of composite alkaline excitant, 1.5 parts of high-efficiency water reducer, 0.5 part of fiber and 40 parts of water.
The matrix material comprises the following components in parts by weight: 7 parts of desulfurized gypsum, 40 parts of slag, 9 parts of bentonite, 50 parts of fly ash, 12 parts of mineral powder and 180 parts of fine aggregate.
Step three: and placing the weighed raw materials into a stirrer for fully stirring.
Step four: the stirred material was left to stand at 25℃with 90% humidity for 28d.
The low-carbon impervious full-solid waste synchronous grouting material prepared in the embodiment is subjected to slurry fluidity, volume shrinkage rate of a stone body, permeability coefficient of the stone body and compressive and flexural strength test, and test results are shown in tables 6-1, 6-2, 6-3 and 6-4:
TABLE 6-1 slurry fluidity of Low carbon anti-permeation type full solid waste synchronous grouting material
Experimental results show that when the adding proportion of the matrix material and water is large, the fluidity of the slurry is small even if the high-efficiency water reducer is added. The addition amount of water should be appropriately increased to meet the fluidity requirement of the synchronous grouting engineering.
TABLE 6-2 Low carbon impervious full solid waste synchronous grouting material calculus 28d shrinkage
Experimental results show that the small amount of the compound alkaline excitant is added, and the addition ratio of the matrix material to water is increased, so that the volume of the calculus body is slightly expanded.
Table 6-3 calculus 28d permeability coefficient of low-carbon impervious full-solid waste synchronous grouting material
Experimental results show that the 28d calculus body impermeability can be obviously enhanced by adding a small amount of compound alkaline excitant and increasing the addition ratio of the matrix material and water.
Table 6-4 Low carbon impervious full solid waste synchronous grouting material stone 28d compression and breaking strength
Experimental results show that the compressive strength and the flexural strength of the 28d stone body can be obviously enhanced by adding a small amount of the compound alkaline excitant and increasing the addition ratio of the matrix material and water. In addition, the folding pressure of the calculus body is relatively large and is 0.237 due to the addition of a small amount of fibers.
Finally, it should be noted that the above-mentioned embodiments are only preferred embodiments of the present application, and the present application is not limited to the above-mentioned embodiments, but may be modified or substituted for some of them by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (19)
1. The low-carbon impervious full-solid waste grouting material is characterized by comprising the following raw materials in parts by weight: 160-270 parts of a matrix material; 0-12 parts of composite additive except 0; 40-70 parts of water;
the matrix material consists of the following raw materials in parts by weight: 2-7 parts of desulfurized gypsum, 20-40 parts of slag, 5-13 parts of bentonite, 30-60 parts of fly ash, 7-17 parts of mineral powder and 60-180 parts of fine aggregate;
the composite additive comprises: compounding an alkaline excitant, a high-efficiency water reducing agent and fibers;
the preparation method of the composite additive comprises the following steps: uniformly mixing the composite alkaline excitant, the high-efficiency water reducer and the fiber to obtain the composite alkaline excitant;
the compound alkaline excitant consists of sodium hydroxide, sodium carbonate and sodium sulfate;
in the compound alkaline excitant, the mass ratio of sodium hydroxide to sodium carbonate to sodium sulfate is 3:1.6-2.4:0.8-1.2.
2. The low-carbon anti-seepage type all-solid-waste grouting material according to claim 1, wherein the mass ratio of the composite alkaline excitant, the high-efficiency water reducer and the fiber is as follows: 0-8:0-3:0-1.
3. The low-carbon anti-seepage type all-solid-waste grouting material according to claim 1, wherein the mass ratio of the composite alkaline excitant, the high-efficiency water reducer and the fiber is as follows: 2-8:0-2:0-0.75.
4. The low-carbon anti-seepage type all-solid-waste grouting material according to claim 1, wherein the mass ratio of the composite alkaline excitant, the high-efficiency water reducer and the fiber is as follows: 2-6:0-1.5:0-0.5.
5. The low-carbon anti-seepage type all-solid-waste grouting material according to claim 1, wherein the mass ratio of the composite alkaline excitant, the high-efficiency water reducer and the fiber is as follows: 2-4:0-1.5:0-0.5.
6. The low carbon, barrier type all solid waste grouting material of claim 1, wherein the fibers are polyacrylonitrile fibers.
7. The low-carbon anti-permeability full-solid waste grouting material according to claim 1, wherein the mass percentage of the composite alkaline activator in the grouting material is 0-1.4%.
8. The low-carbon anti-permeability full-solid waste grouting material according to claim 1, wherein the mass percentage of the high-efficiency water reducer in the grouting material is 0-0.7%.
9. The low carbon, barrier type all solid waste grouting material of claim 1, wherein the mass percent of the fiber in the grouting material is 0-0.2%.
10. The low-carbon anti-permeability full solid waste grouting material according to claim 1, wherein the mass percentage of the high-efficiency water reducer in the solid waste grouting material is 0-0.35%.
11. The low-carbon anti-seepage type all-solid-waste grouting material as claimed in claim 1, wherein the low-carbon anti-seepage type all-solid-waste grouting material is composed of the following raw materials in parts by weight: 160 parts of matrix material, 2 parts of composite alkaline excitant, 0 part of high-efficiency water reducer, 0.25 part of fiber and 40 parts of water.
12. The low-carbon anti-seepage type all-solid-waste grouting material as claimed in claim 1, wherein the low-carbon anti-seepage type all-solid-waste grouting material is composed of the following raw materials in parts by weight: 160 parts of matrix material, 0 part of composite alkaline excitant, 3 parts of high-efficiency water reducer, 1 part of fiber and 70 parts of water.
13. The low-carbon anti-seepage type all-solid-waste grouting material as claimed in claim 1, wherein the low-carbon anti-seepage type all-solid-waste grouting material is composed of the following raw materials in parts by weight: 215 parts of matrix material, 4 parts of composite alkaline excitant, 1 part of high-efficiency water reducer, 0.25 part of fiber and 55 parts of water.
14. The low-carbon anti-seepage type all-solid-waste grouting material as claimed in claim 1, wherein the low-carbon anti-seepage type all-solid-waste grouting material is composed of the following raw materials in parts by weight: 215 parts of matrix material, 8 parts of composite alkaline excitant, 2 parts of high-efficiency water reducer, 0.75 part of fiber and 55 parts of water.
15. The low-carbon anti-seepage type all-solid-waste grouting material as claimed in claim 1, wherein the low-carbon anti-seepage type all-solid-waste grouting material is composed of the following raw materials in parts by weight: 270 parts of matrix material, 6 parts of composite alkaline excitant, 1 part of high-efficiency water reducer, 0 part of fiber and 70 parts of water.
16. The low-carbon anti-seepage type all-solid-waste grouting material as claimed in claim 1, wherein the low-carbon anti-seepage type all-solid-waste grouting material is composed of the following raw materials in parts by weight: 270 parts of matrix material, 2 parts of composite alkaline excitant, 1.5 parts of high-efficiency water reducer, 0.5 part of fiber and 40 parts of water.
17. A method for preparing the low-carbon anti-permeability full-solid waste grouting material according to claim 1, which is characterized by comprising the following steps:
weighing various raw materials according to the weight ratio;
uniformly mixing desulfurized gypsum, slag, bentonite, fly ash, mineral powder and fine aggregate according to a proportion to prepare a matrix material;
and uniformly mixing the matrix material, the composite additive and water according to a proportion to prepare the low-carbon anti-permeability full-solid waste grouting material.
18. The method for preparing a low-carbon anti-permeability full-solid waste grouting material according to claim 17, wherein the fineness of the raw materials is more than 425 meshes.
19. Use of the all-solid waste grouting material according to any one of claims 1-16 in impervious filling.
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