CN115321935A - Lithium slag-based anti-blocking ecological water permeable brick and preparation method thereof - Google Patents
Lithium slag-based anti-blocking ecological water permeable brick and preparation method thereof Download PDFInfo
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- CN115321935A CN115321935A CN202211098559.3A CN202211098559A CN115321935A CN 115321935 A CN115321935 A CN 115321935A CN 202211098559 A CN202211098559 A CN 202211098559A CN 115321935 A CN115321935 A CN 115321935A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 70
- 239000002893 slag Substances 0.000 title claims abstract description 62
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 55
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 55
- 239000011449 brick Substances 0.000 title claims abstract description 39
- 238000002360 preparation method Methods 0.000 title description 7
- 239000004568 cement Substances 0.000 claims abstract description 28
- 239000010410 layer Substances 0.000 claims abstract description 20
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 17
- 239000002344 surface layer Substances 0.000 claims abstract description 16
- 239000004576 sand Substances 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 14
- 235000019738 Limestone Nutrition 0.000 claims abstract description 11
- 239000006028 limestone Substances 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 10
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 9
- 229910021487 silica fume Inorganic materials 0.000 claims abstract description 9
- 239000003822 epoxy resin Substances 0.000 claims abstract description 8
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 8
- 229920005989 resin Polymers 0.000 claims abstract description 7
- 239000011347 resin Substances 0.000 claims abstract description 7
- 239000000843 powder Substances 0.000 claims description 16
- 229910052602 gypsum Inorganic materials 0.000 claims description 7
- 239000010440 gypsum Substances 0.000 claims description 7
- 239000011398 Portland cement Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 5
- 239000004575 stone Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 239000002002 slurry Substances 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 150000004683 dihydrates Chemical class 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 239000004593 Epoxy Substances 0.000 claims description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 2
- 150000001412 amines Chemical class 0.000 claims description 2
- 229910052739 hydrogen Inorganic materials 0.000 claims description 2
- 239000001257 hydrogen Substances 0.000 claims description 2
- 229920005646 polycarboxylate Polymers 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims description 2
- 239000012190 activator Substances 0.000 abstract description 8
- 238000006253 efflorescence Methods 0.000 abstract description 7
- 206010037844 rash Diseases 0.000 abstract description 7
- 238000009825 accumulation Methods 0.000 abstract 1
- 239000002585 base Substances 0.000 description 14
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 229910052629 lepidolite Inorganic materials 0.000 description 5
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 230000035699 permeability Effects 0.000 description 4
- 239000011734 sodium Substances 0.000 description 4
- 229910052708 sodium Inorganic materials 0.000 description 4
- 239000002910 solid waste Substances 0.000 description 4
- 239000003513 alkali Substances 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
- 235000019353 potassium silicate Nutrition 0.000 description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 3
- 239000000378 calcium silicate Substances 0.000 description 2
- 229910052918 calcium silicate Inorganic materials 0.000 description 2
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 2
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 2
- 229910052808 lithium carbonate Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011380 pervious concrete Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910001653 ettringite Inorganic materials 0.000 description 1
- 239000010433 feldspar Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- RHDUVDHGVHBHCL-UHFFFAOYSA-N niobium tantalum Chemical compound [Nb].[Ta] RHDUVDHGVHBHCL-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- BITYAPCSNKJESK-UHFFFAOYSA-N potassiosodium Chemical compound [Na].[K] BITYAPCSNKJESK-UHFFFAOYSA-N 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000003469 silicate cement Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 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
- C04B28/14—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
- C04B7/153—Mixtures thereof with other inorganic cementitious materials or other activators
- C04B7/17—Mixtures thereof with other inorganic cementitious materials or other activators with calcium oxide containing activators
- C04B7/19—Portland cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/14—Cements containing slag
- C04B7/147—Metallurgical slag
- C04B7/153—Mixtures thereof with other inorganic cementitious materials or other activators
- C04B7/21—Mixtures thereof with other inorganic cementitious materials or other activators with calcium sulfate containing activators
-
- 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
-
- 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
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00284—Materials permeable to liquids
-
- 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
- C04B2111/00612—Uses not provided for elsewhere in C04B2111/00 as one or more layers of a layered structure
-
- 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)
- Chemical Kinetics & Catalysis (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to a lithium slag-based ecological anti-clogging water permeable brick, which is of a double-layer structure formed by cementing a base layer and a surface layer; the base layer is prepared from the following raw materials in parts by weight: 20 to 25 parts of lithium slag ecological cement, 75 to 80 parts of limestone macadam of 5 to 10mm, 0.2 to 0.4 part of silica fume, 0.008 to 0.01 part of water reducing agent and 7.2 to 10 parts of water; the surface layer is prepared from the following materials in parts by weight: 15 to 20 parts of lithium slag ecological cement, 80 to 85 parts of baking sand, 0.45 to 1.2 parts of waterborne epoxy resin, 0.1125to 0.6 part of curing agent resin, 3 to 4.8 parts of water and 0.006 to 0.008 part of water reducing agent. The invention also provides a method for preparing the water permeable brick. The invention not only can solve the problem of mass accumulation of the existing lithium slag, but also can solve the problems of overhigh cost and easy efflorescence of the water permeable brick caused by overhigh doping amount of the alkaline activator when the water permeable brick is prepared by using the lithium slag ecological cement.
Description
Technical Field
The invention belongs to the technical field of producing building materials by utilizing industrial solid wastes, and relates to an anti-blocking water permeable brick prepared by utilizing lithium slag powder and a preparation process thereof.
Background
Lepidolite resources in Jiangxi province are rich, tantalum niobium ores and associated lepidolite ores in Yichun city are one of the largest lepidolite ores in Asia which are proved at present, but the lepidolite is low in grade and high in mining difficulty, so that 15-18t of leaching residues (lithium residues) and a large amount of potassium-sodium feldspar powder can be generated when 1t of lithium carbonate is produced. The predicted output of lithium carbonate produced by lepidolite in the yichun area of 2021 is more than 10 ten thousand tons, and the by-product lithium slag is more than 150 ten thousand tons at that time. At present, a large amount of lithium slag can only be stored in a storage yard, which not only wastes land resources, but also easily pollutes the local ecological environment.
In order to reduce the occurrence of urban flood disasters, adjust the ecological environment of cities and relieve the environmental problems of heat island effect and the like, the permeable paving material is widely applied to places such as sidewalks, squares, parking lots and the like in recent years. Research shows that the active ingredient SiO contained in the lithium slag 2 And Al 2 O 3 Can be mixed with Ca (OH) 2 The weak volcanic ash reaction occurs to generate the gelling substances with certain strength, namely calcium silicate hydrate and calcium aluminate hydrate. Therefore, the lithium slag can be used for preparing the pervious concrete by matching with other active solid wastes and an exciting agent to prepare ecological cement. However, most of the related researches adopt strong alkali such as water glass and NaOH or mix more silicate cement as an activator, so that the cost is high, and the severe alkali efflorescence phenomenon on the pervious concrete bricks is easily caused.
Chinese patent CN114249559A discloses a full solid waste base water permeable brick with adsorption performance and a preparation method thereof. The water permeable brick is prepared by mixing lithium slag, fly ash, silica fume and slag micropowder to obtain a uniform powdery solid waste raw material, sequentially adding a composite excitant solution consisting of a sodium hydroxide solution, sodium-based water glass and sodium metaaluminate solution, a high-efficiency water reducing agent and a proper amount of water, uniformly stirring, and then pouring, compacting, sealing and carrying out step curing. However, the composite activator solution composed of the sodium hydroxide solution, the sodium-based water glass and the sodium metaaluminate solution has high cost, and the condition of efflorescence of the water permeable brick is easily caused, so that the attractiveness of the water permeable brick after brick laying is seriously influenced.
Disclosure of Invention
The invention aims to solve the technical problems that the existing lithium slag is accumulated in a large amount, and the existing water permeable brick prepared by using the lithium slag as ecological cement has the problems of high cost and easy efflorescence due to over-high doping amount of an alkaline activator.
The purpose of the invention is realized by the following technical scheme:
firstly, the invention provides a lithium slag-based ecological anti-clogging water permeable brick which is of a double-layer structure formed by cementing a base layer and a surface layer; the base layer is prepared from the following raw materials in parts by weight: 20 to 25 parts of lithium slag ecological cement, 75 to 80 parts of limestone broken stones with the thickness of 5 to 10mm, 0.2 to 0.4 part of silica fume, 0.008 to 0.01 part of water reducing agent and 7.2 to 10 parts of water; the surface layer is prepared from the following materials in parts by weight: 15 to 20 parts of lithium slag ecological cement, 80 to 85 parts of baking sand, 0.45 to 1.2 parts of waterborne epoxy resin, 0.1125 to 0.6 part of curing agent resin, 3 to 4.8 parts of water and 0.006 to 0.008 part of water reducing agent.
In a preferable scheme of the invention, the lithium slag-based ecological cement is prepared from 400 to 500m 2 Specific lithium slag powder/kg, 400 to 500m 2 Per kg of specific surface steel slag powder, S95-grade slag powder, desulfurized gypsum with dihydrate gypsum content of more than 88 percent, and common 42.5 Portland cement according to the weight ratio of 25:45:10:9:1, and mixing uniformly. Because the raw material of the lithium slag-based ecological cement contains little ordinary portland cement and the reaction generates Ca (OH) 2 Can be used as an activator to react with mineral powder and lithium slag powder in the ecological cement, and can effectively solve the problem of serious efflorescence of the existing lithium slag-based permeable concrete. Meanwhile, the lithium slag ecological cement only adopts a small amount of ordinary portland cement and dihydrate gypsum as an excitant, so that the cost is low and the price advantage is obvious.
In the preferable scheme of the invention, in the limestone macadam, the needle sheet content is less than 10%, the mud content is less than 0.5%, and the crushing value is less than 12%.
In the preferable scheme of the invention, the drying sand is prepared by washing and drying desert aeolian sand, the fineness is 40-70 meshes, and the mud content is lower than 0.03%.
In the preferable scheme of the invention, the water-based epoxy resin is an ivory-white liquid, the solid content is 52% -54%, and the epoxy content is 900-1100 g/mol.
In a preferable scheme of the invention, the curing agent resin is yellow liquid, the solid content is more than or equal to 99%, the amine value is 320-360 mg KOH/g, and the active hydrogen content is more than 105.
In a preferred embodiment of the present invention, the silica fume, siO 2 The content is more than 95 percent, and the activity index is more than 110 percent.
In the preferable scheme of the invention, the water reducing agent is polycarboxylate water reducing agent powder, and the water reducing rate is more than 25%.
In addition, the invention also provides a preparation method of the lithium slag-based anti-clogging water permeable brick, which comprises the following specific steps:
1) Uniformly stirring the following raw materials in parts by weight to prepare a surface layer slurry: 20 to 25 parts of lithium slag ecological cement, 75 to 80 parts of limestone macadam of 5 to 10mm, 0.2 to 0.4 part of silica fume, 0.008 to 0.01 part of water reducing agent and 7.2 to 10 parts of water;
2) Uniformly stirring the following raw materials in parts by weight to prepare base layer slurry: 15 to 20 parts of lithium slag ecological cement, 80 to 85 parts of baking sand, 0.45 to 1.2 parts of waterborne epoxy resin, 0.1125to 0.6 part of curing agent resin, 3 to 4.8 parts of water and 0.006 to 0.008 part of water reducing agent;
3) According to the thickness ratio of the surface layer to the base layer of 2.
Compared with the prior art, the invention provides the lithium slag-based anti-clogging ecological water permeable brick and the preparation method thereof. The lithium slag-based anti-clogging ecological water permeable brick has an anti-clogging effect by adopting a double-layer structure, wherein the surface layer material is a sand base with a smaller pore structureThe permeable material, thereby preventing large particle dust from blocking the permeable concrete pores of the base layer. More importantly, the invention also effectively solves the problems that the water permeable brick has higher cost and is easy to cause efflorescence due to overhigh dosage of the alkali activator in the process of preparing the water permeable brick by using the lithium slag as the cementing material at present, greatly improves the utilization rate of the lithium slag, and has low production energy consumption, low production cost and huge economic benefit and social benefit. The invention scientifically and effectively mixes the lithium slag powder and various industrial waste slag to be used as cementing materials to prepare the water permeable brick, and a small amount of Ca (OH) generated by hydration reaction of ordinary portland cement and the steel slag powder is utilized 2 Reacting with active alumina and active silica in lithium slag powder and slag powder to generate hydrated calcium silicate and hydrated calcium aluminate, and reacting with CaSO in desulfurized gypsum 4 ·2H 2 The O reacts to generate ettringite, thereby improving the compressive strength of the permeable pavement material. Because only a small amount of ordinary portland cement is adopted as the activator, the problems of high cost and easy efflorescence caused by over-high doping amount of the alkaline activator in the existing technology for preparing the water permeable brick by using the lithium slag can be effectively solved. The preparation method is simple and easy to implement, has low cost, and has wide application prospect in sponge city construction engineering. Greatly improves the comprehensive utilization value of the lithium slag and has good economic benefit and environmental effect.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described in more detail below by way of examples. The embodiments described herein are merely illustrative of the present invention and are not to be considered as the full scope of the invention.
Example 1
The permeable brick base layer is prepared from 20 parts of lithium slag ecological cement, 80 parts of limestone broken stone of 5-10mm, 0.3 part of silica fume, 7.6 parts of water and 0.009 part of water reducing agent; the permeable brick surface layer material comprises 15 parts of lithium slag ecological cement, 85 parts of dried sand, 0.46 part of water-based epoxy resin, 0.1130 part of curing agent, 3.5 parts of water and 0.008 part of water reducing agent. After the surface layer and the base layer material of the permeable brick are respectively stirred uniformly according to the proportion, according to the surface layer: and (3) filling the base layer 2 with the thickness of the base layer in two times, and maintaining the pressure for 5s under the forming pressure of 15MPa to obtain the lithium slag-based ecological anti-blocking water permeable brick, wherein the size of the water permeable brick is 100 × 200 × 60mm. And after 28d of maintenance, testing the flexural strength, compressive strength and water permeability coefficient of the water permeable brick. The test results are shown in table 1.
Example 2
The method of example 1 was repeated, but the amount of the ecological cement in the lithium slag was changed to 17 parts, and the amount of the limestone-based crushed stone of 5 to 10mm was changed to 83 parts.
Example 3
The method of example 1 is repeated, but in the base material, the dosage of the lithium slag ecological cement is changed to 23 parts, and the dosage of the 5-10mm limestone macadam is changed to 77 parts.
Example 4
The method of example 1 is repeated, but in the base material, the usage of the lithium slag ecological cement is changed to 28 parts, and the usage of the 5-10mm limestone macadam is changed to 72 parts.
Example 5
The method of example 1 is repeated, but the usage of the lithium slag ecological cement in the surface layer material is changed to 13 parts, and the usage of the dried sand is changed to 87 parts.
Example 6
The method of example 1 was repeated, but the amount of the ecological cement in the lithium slag was changed to 17 parts and the amount of the dried sand was changed to 83 parts.
Example 7
The method of example 1 was repeated, but the amount of the ecological cement in the lithium slag was changed to 20 parts and the amount of the baked sand was changed to 80 parts.
Example 8
The method of example 1 was repeated, but the amount of the ecological cement in the lithium slag was changed to 23 parts and the amount of the baked sand was changed to 77 parts.
Table 1: the strength and water permeability coefficient of the water permeable brick and the compressive strength at 28d in each embodiment
| Example numbering | Permeability coefficient (mm/s) | 28d breaking strength (MPa) | 28d compressive Strength (MPa) |
| Example 1 | 3.0 | 3.2 | 31.1 |
| Example 2 | 3.2 | 2.6 | 27.5 |
| Example 3 | 2.8 | 3.5 | 34.5 |
| Example 4 | 2.6 | 3.7 | 35.3 |
| Example 5 | 3.4 | 3.0 | 32.2 |
| Example 6 | 2.7 | 3.2 | 32.2 |
| Example 7 | 2.5 | 3.3 | 33.1 |
| Example 8 | 2.4 | 3.4 | 33.9 |
The examples in the table 1 show that when the dosage of the lithium slag ecological cement in the permeable base layer is 20-25 parts, the dosage of the surface layer is 15-20 parts, the water permeability coefficient of the prepared permeable brick is more than 2.5mm/s, and the 28d compressive strength is more than 30MPa, the design requirements can be met.
Various changes or equivalent substitutions may be made in the features and embodiments without departing from the spirit and scope of the invention by anyone. The present invention is not to be limited by the specific embodiments disclosed herein, and other embodiments that fall within the scope of the claims of the present application are intended to be within the scope of the present invention.
Claims (9)
1. A lithium slag-based ecological anti-clogging water permeable brick is a double-layer structure formed by cementing a base layer and a surface layer; the base layer is prepared from the following raw materials in parts by weight: 20 to 25 parts of lithium slag ecological cement, 75 to 80 parts of limestone macadam of 5 to 10mm, 0.2 to 0.4 part of silica fume, 0.008 to 0.01 part of water reducing agent and 7.2 to 10 parts of water; the surface layer is prepared from the following materials in parts by weight: 15 to 20 parts of lithium slag ecological cement, 80 to 85 parts of baking sand, 0.45 to 1.2 parts of waterborne epoxy resin, 0.1125to 0.6 part of curing agent resin, 3 to 4.8 parts of water and 0.006 to 0.008 part of water reducing agent.
2. The water permeable brick of claim 1, wherein: the lithium slag-based ecological cement is prepared from 400 to 500m 2 Specific lithium slag powder/kg, 400 to 500m 2 The steel slag powder, S95 grade slag powder and dihydrate gypsum of the ratio of/kgDesulfurized gypsum accounting for more than 88 percent of the total weight of the desulfurized gypsum and common 42.5 Portland cement are mixed according to the weight ratio of 25:45:10:9:1, and mixing uniformly.
3. The water permeable brick of claim 1, wherein: in the limestone broken stone, the needle sheet content is less than 10%, the mud content is less than 0.5%, and the crushing value is less than 12%.
4. The water permeable brick of claim 1, wherein: the dried sand is prepared by washing and drying desert aeolian sand, the fineness is 40-70 meshes, and the mud content is lower than 0.03%.
5. The water permeable brick of claim 1, wherein: the waterborne epoxy resin is milky white liquid, the solid content is 52-54%, and the epoxy content is 900-1100 g/mol.
6. The water permeable brick of claim 1, wherein: the curing agent resin is yellow liquid, the solid content is more than or equal to 99%, the amine value is 320-360 mg KOH/g, and the active hydrogen content is more than 105.
7. The water permeable brick of claim 1, wherein: the silica fume, siO 2 The content is more than 95 percent, and the activity index is more than 110 percent.
8. The water permeable brick of claim 1, wherein: the water reducing agent is polycarboxylate water reducing agent powder, and the water reducing rate is more than 25%.
9. The method for preparing the lithium slag-based anti-clogging water permeable brick comprises the following specific steps:
1) Uniformly stirring the following raw materials in parts by weight to prepare a surface layer slurry: 20 to 25 parts of lithium slag ecological cement, 75 to 80 parts of limestone type crushed stone with the thickness of 5 to 10mm, 0.2 to 0.4 part of silica fume, 0.008 to 0.01 part of water reducing agent and 7.2 to 10 parts of water;
2) Uniformly stirring the following raw materials in parts by weight to prepare a base layer slurry: 15 to 20 parts of lithium slag ecological cement, 80 to 85 parts of baking sand, 0.45 to 1.2 parts of waterborne epoxy resin, 0.1125to 0.6 part of curing agent resin, 3 to 4.8 parts of water and 0.006 to 0.008 part of water reducing agent;
3) And (2) according to the thickness ratio of the surface layer to the base layer of 2.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116730708A (en) * | 2023-07-05 | 2023-09-12 | 江西省建材科研设计院有限公司 | Lithium slag microcrystalline floor tile and preparation method thereof |
| CN116813292A (en) * | 2023-06-12 | 2023-09-29 | 江西省交通科学研究院有限公司 | Lithium slag cement stabilized macadam base material and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106116189A (en) * | 2016-06-28 | 2016-11-16 | 东南大学 | A kind of no first-hand datum lithium slag composite gelled material |
| CN106630825A (en) * | 2016-12-15 | 2017-05-10 | 东莞深圳清华大学研究院创新中心 | Composite water permeable brick and preparation method thereof |
| CN108840636A (en) * | 2018-09-19 | 2018-11-20 | 贵州师范大学 | Improve the preparation method of mortar mechanical property |
| CN111892364A (en) * | 2020-08-06 | 2020-11-06 | 张延年 | Multi-solid-waste non-fired non-steamed double-layer-structure water permeable brick and preparation method thereof |
| CN114249559A (en) * | 2020-09-22 | 2022-03-29 | 湖北大学 | Full-solid waste base water permeable brick with adsorption performance and preparation method thereof |
-
2022
- 2022-09-09 CN CN202211098559.3A patent/CN115321935A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106116189A (en) * | 2016-06-28 | 2016-11-16 | 东南大学 | A kind of no first-hand datum lithium slag composite gelled material |
| CN106630825A (en) * | 2016-12-15 | 2017-05-10 | 东莞深圳清华大学研究院创新中心 | Composite water permeable brick and preparation method thereof |
| CN108840636A (en) * | 2018-09-19 | 2018-11-20 | 贵州师范大学 | Improve the preparation method of mortar mechanical property |
| CN111892364A (en) * | 2020-08-06 | 2020-11-06 | 张延年 | Multi-solid-waste non-fired non-steamed double-layer-structure water permeable brick and preparation method thereof |
| CN114249559A (en) * | 2020-09-22 | 2022-03-29 | 湖北大学 | Full-solid waste base water permeable brick with adsorption performance and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116813292A (en) * | 2023-06-12 | 2023-09-29 | 江西省交通科学研究院有限公司 | Lithium slag cement stabilized macadam base material and preparation method thereof |
| CN116730708A (en) * | 2023-07-05 | 2023-09-12 | 江西省建材科研设计院有限公司 | Lithium slag microcrystalline floor tile and preparation method thereof |
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