CN116675479B - Soil cementing material and preparation method thereof - Google Patents
Soil cementing material and preparation method thereof Download PDFInfo
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- CN116675479B CN116675479B CN202310461435.5A CN202310461435A CN116675479B CN 116675479 B CN116675479 B CN 116675479B CN 202310461435 A CN202310461435 A CN 202310461435A CN 116675479 B CN116675479 B CN 116675479B
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- 239000002689 soil Substances 0.000 title claims abstract description 102
- 239000000463 material Substances 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title abstract description 8
- 239000010802 sludge Substances 0.000 claims abstract description 102
- 239000004753 textile Substances 0.000 claims abstract description 73
- 239000002893 slag Substances 0.000 claims abstract description 68
- 238000004043 dyeing Methods 0.000 claims abstract description 65
- 238000007639 printing Methods 0.000 claims abstract description 65
- 239000000843 powder Substances 0.000 claims abstract description 60
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 36
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 36
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 34
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000000919 ceramic Substances 0.000 claims abstract description 34
- 238000001354 calcination Methods 0.000 claims abstract description 26
- 239000000126 substance Substances 0.000 claims description 44
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 25
- 229910052742 iron Inorganic materials 0.000 claims description 24
- 239000004568 cement Substances 0.000 claims description 17
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 11
- 238000002156 mixing Methods 0.000 claims description 4
- 229910052708 sodium Inorganic materials 0.000 claims description 4
- 238000001035 drying Methods 0.000 abstract description 4
- 239000011734 sodium Substances 0.000 description 26
- 239000002245 particle Substances 0.000 description 17
- 239000002910 solid waste Substances 0.000 description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 15
- 238000012360 testing method Methods 0.000 description 13
- 239000011148 porous material Substances 0.000 description 11
- 238000006703 hydration reaction Methods 0.000 description 10
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 9
- 230000036571 hydration Effects 0.000 description 9
- 239000000378 calcium silicate Substances 0.000 description 8
- 229910052918 calcium silicate Inorganic materials 0.000 description 8
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 8
- 229910001653 ettringite Inorganic materials 0.000 description 7
- 230000002829 reductive effect Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 229910000323 aluminium silicate Inorganic materials 0.000 description 5
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 5
- 238000007711 solidification Methods 0.000 description 5
- 230000008023 solidification Effects 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 4
- 239000013543 active substance Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 238000001879 gelation Methods 0.000 description 4
- 229910044991 metal oxide Inorganic materials 0.000 description 4
- 150000004706 metal oxides Chemical group 0.000 description 4
- 239000005416 organic matter Substances 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 239000004115 Sodium Silicate Substances 0.000 description 3
- 241000700605 Viruses Species 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 3
- 239000000404 calcium aluminium silicate Substances 0.000 description 3
- 235000012215 calcium aluminium silicate Nutrition 0.000 description 3
- WNCYAPRTYDMSFP-UHFFFAOYSA-N calcium aluminosilicate Chemical compound [Al+3].[Al+3].[Ca+2].[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O WNCYAPRTYDMSFP-UHFFFAOYSA-N 0.000 description 3
- 229940078583 calcium aluminosilicate Drugs 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 238000000227 grinding Methods 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 244000005700 microbiome Species 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000006911 nucleation Effects 0.000 description 3
- 238000010899 nucleation Methods 0.000 description 3
- 239000002957 persistent organic pollutant Substances 0.000 description 3
- 238000004062 sedimentation Methods 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 3
- 229910052911 sodium silicate Inorganic materials 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 239000000920 calcium hydroxide Substances 0.000 description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 239000010985 leather Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000036961 partial effect Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 244000179970 Monarda didyma Species 0.000 description 1
- 235000010672 Monarda didyma Nutrition 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000003187 abdominal effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000009993 causticizing Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000003895 groundwater pollution Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 1
- 229910052808 lithium carbonate Inorganic materials 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000003469 silicate cement Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000005527 soil sampling Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/02—Soil-conditioning materials or soil-stabilising materials containing inorganic compounds only
- C09K17/08—Aluminium compounds, e.g. aluminium hydroxide
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/04—Heat treatment
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
-
- 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
- C04B2111/00732—Uses not provided for elsewhere in C04B2111/00 for soil stabilisation
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Structural Engineering (AREA)
- Soil Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a soil cementing material and a preparation method thereof, wherein the soil cementing material comprises the following components in parts by weight: 40-45 parts of ceramic powder, 5-10 parts of aluminum slag powder, 20-30 parts of calcined textile printing and dyeing sludge, 10-20 parts of calcined papermaking green mud and 10-20 parts of lithium slag; the calcined textile printing and dyeing sludge is a product obtained by calcining textile printing and dyeing sludge, and the calcined papermaking green mud is a product obtained by calcining papermaking green mud. The soil cementing material provided by the invention can enhance the compactness and compressive strength of soil, reduce the drying shrinkage of the solidified soil body and improve the durability of the solidified soil.
Description
Technical Field
The invention relates to the technical field of soil solidification, in particular to a soil cementing material and a preparation method thereof.
Background
The Guangdong Zhujiang triangle region in China has complex geological environment and typical sea-phase sedimentary stratum, and the Zhujiang triangle abdominal region is mainly composed of soft soil layers such as mucky soil, mucky sand and the like. The soft soil has the characteristics of high organic matter content, large water content, low bearing capacity, high pore ratio and the like. With the continuous deepening of the modernization of the Zhujiang delta, the adoption of reasonable soil cementing materials creates more possibilities for harsher construction conditions and more magnificent engineering.
The cement is mature in preparation process and convenient to use, and is the soil cementing material with the widest application range and the largest quantity. However, cement production is a high energy industry, with the energy consumption of producing 1kg of ordinary Portland cement being about 1.7 megajoules, while discharging about 0.9kg of carbon dioxide. In addition, when the soil sample with high organic matter content and high porosity is solidified, the hydration environment of the cement is bad, the hydration reaction rate is slow, and a compact gel structure is difficult to form, so that the strength of the solidified soil body is still lower.
On the other hand, guangdong is also an important manufacturing industry base in China, and comprises manufacturing industries such as ceramic, aluminum profile processing, textile leather, papermaking and the like. The treatment of solid wastes such as ceramic powder, aluminum slag powder, textile leather sludge and the like produced in the manufacturing industry is under increasing pressure, and the comprehensive utilization rate of the solid wastes is low. In order to respond to the call of the double-carbon policy, the method for improving the utilization rate of solid waste and reducing the consumption of cement to a greater extent is a research hot spot in the current soft soil curing technical field.
Disclosure of Invention
The invention aims to solve the technical problem of providing a soil cementing material which fully utilizes solid wastes and can enhance the compactness and the compressive strength of soil.
The invention also aims to solve the technical problem of providing a preparation method of the soil cementing material, which fully utilizes solid wastes and has simple process.
In order to solve the technical problems, the invention provides a soil cementing material which comprises the following components in parts by weight: 40-45 parts of ceramic powder, 5-10 parts of aluminum slag powder, 20-30 parts of calcined textile printing and dyeing sludge, 10-20 parts of calcined papermaking green mud and 10-20 parts of lithium slag;
the calcined textile printing and dyeing sludge is a product obtained by calcining textile printing and dyeing sludge, and the calcined papermaking green mud is a product obtained by calcining papermaking green mud.
In one implementationIn the mode, the textile printing and dyeing sludge comprises the following chemical components in percentage by mass: caO+Na 2 O 53％～60％、SiO 2 1％～4％、Al 2 O 3 1％～2％、Fe 2 O 3 5％～8％、MgO1％～2％、LOI 25％～35％。
In one embodiment, the papermaking green sludge comprises the following chemical components in percentage by mass: caO+Na 2 O 50％～60％、SiO 2 5％～7％、Al 2 O 3 1％～2％、Fe 2 O 3 4％～8％、LOI 28％～37％。
In one embodiment, caO and Na in the chemical composition of the textile printing sludge and the green sludge 2 The mass ratio of O is (4-5): (5-6).
In one embodiment, the ceramic powder comprises the following chemical components in percentage by mass: caO 1-5%, siO 2 12％～21％、Al 2 O 3 60％～75％、Fe 2 O 3 1％～3wt％、Na 2 O 1％～5wt％、MgO 1％～5wt％、LOI 1％～5wt％。
In one embodiment, the aluminum slag powder comprises the following chemical components in percentage by mass: caO 1-2%, siO 2 4％～8％、Al 2 O 3 70％～84％、Fe 2 O 3 2％～5％、MgO 8％～15％、LOI 0.1％～1％。
In one embodiment, the lithium slag comprises the following chemical components in percentage by mass: caO 4-5%, siO 2 50％～60％、Al 2 O 3 18％～25％、Fe 2 O 3 0.1％～1.5％、SO 3 8％～15％、LOI 8％～12％。
In one embodiment, the ceramic powder has a particle size of 75 μm or less;
the grain diameter of the aluminum slag powder is less than or equal to 75 mu m;
the grain diameter of the calcined textile printing and dyeing sludge is less than or equal to 75 mu m;
the grain diameter of the calcined papermaking green mud is less than or equal to 75 mu m;
the grain diameter of the lithium slag is less than or equal to 15 mu m.
In order to solve the problems, the invention provides a preparation method of a soil cementing material, which comprises the following steps:
s1, preparing textile printing and dyeing sludge and papermaking green sludge;
s2, calcining the textile printing and dyeing sludge and the papermaking green mud to obtain calcined textile printing and dyeing sludge and calcined papermaking green mud;
s3, mixing 40-45 parts of ceramic powder, 5-10 parts of aluminum slag powder, 20-30 parts of calcined textile printing and dyeing sludge, 10-20 parts of calcined papermaking green mud and 10-20 parts of lithium slag according to parts by weight to obtain a finished product.
In one embodiment, when the textile printing and dyeing sludge is subjected to calcination treatment, the calcination temperature is 550-1000 ℃;
when the green mud is calcined, the calcining temperature is 800-900 ℃.
The implementation of the invention has the following beneficial effects:
the invention adopts ceramic powder, aluminum slag powder, calcined textile dyeing and finishing sludge, calcined pulp green mud and lithium slag to prepare the soil cementing material, fully utilizes solid wastes, relieves the problems of accumulation and waste of the solid wastes to a certain extent, improves the utilization rate of the solid wastes, and has good economic and environmental protection benefits. The active substances in the calcined textile dyeing and finishing sludge and the calcined pulp green mud in the soil cementing material can react with water to generate alkaline substances, the ceramic powder, the aluminum slag powder and active silicon and aluminum phases in the lithium slag are dissolved in an alkaline environment, aluminosilicate is promoted to be converted into more stable hydration products, such as calcium silicate hydrate, calcium aluminosilicate hydrate, calcium aluminate hydrate and other gelation products, a network structure is established, and the primary cementing soil particles form a framework structure. Meanwhile, the lithium slag with fine grain size has higher surface energy, can adsorb ions, provides nucleation sites for hydrated calcium silicate, accelerates the hydration of the system and improves the early strength. And the produced hydrated calcium aluminate can generate needle-shaped ettringite with sulfate in lithium slag, and the needle-shaped ettringite can be filled among soil particles, so that the pore structure is further optimized. The internal pore structure is thinned under multiple actions, the expansion and communication of macropores are reduced, and the compactness of soil is improved.
Detailed Description
The present invention will be described in further detail below in order to make the objects, technical solutions and advantages of the present invention more apparent.
Unless otherwise indicated or contradicted, terms or phrases used herein have the following meanings:
in the present invention, "preferred" is merely to describe embodiments or examples that are more effective, and it should be understood that they are not intended to limit the scope of the present invention.
In the invention, the technical characteristics described in an open mode comprise a closed technical scheme composed of the listed characteristics and also comprise an open technical scheme comprising the listed characteristics.
In the present invention, the numerical range is referred to, and both ends of the numerical range are included unless otherwise specified.
In order to solve the problems, the invention provides a soil cementing material which comprises the following components in parts by weight: 40-45 parts of ceramic powder, 5-10 parts of aluminum slag powder, 20-30 parts of calcined textile printing and dyeing sludge, 10-20 parts of calcined papermaking green mud and 10-20 parts of lithium slag;
the calcined textile printing and dyeing sludge is a product obtained by calcining textile printing and dyeing sludge, and the calcined papermaking green mud is a product obtained by calcining papermaking green mud.
The invention adopts ceramic powder, aluminum slag powder, calcined textile dyeing and finishing sludge, calcined pulp green mud and lithium slag to prepare the soil cementing material, fully utilizes solid wastes, relieves the problems of accumulation and waste of the solid wastes to a certain extent, improves the utilization rate of the solid wastes, and has good economic and environmental protection benefits. The active substances in the calcined textile dyeing and finishing sludge and the calcined pulp green mud in the soil cementing material can react with water to generate alkaline substances, the ceramic powder, the aluminum slag powder and active silicon and aluminum phases in the lithium slag are dissolved in an alkaline environment, aluminosilicate is promoted to be converted into more stable hydration products, such as calcium silicate hydrate, calcium aluminosilicate hydrate, calcium aluminate hydrate and other gelation products, a network structure is established, and the primary cementing soil particles form a framework structure. Meanwhile, the lithium slag with fine grain size has higher surface energy, can adsorb ions, provides nucleation sites for hydrated calcium silicate, accelerates the hydration of the system and improves the early strength. And the produced hydrated calcium aluminate can generate needle-shaped ettringite with sulfate in lithium slag, and the needle-shaped ettringite can be filled among soil particles, so that the pore structure is further optimized. The internal pore structure is thinned under multiple actions, the expansion and communication of macropores are reduced, and the compactness of soil is improved.
In particular, compared with the conventional excitants such as sodium silicate, the sodium silicate can provide higher strength, but has higher cost, and when the sodium silicate is used as the alkali excitant, the silica-rich gel with higher water content is formed in the hydration process, and is greatly contracted after being dehydrated, so that a large number of cracks are generated on the solidified soil body, and the development of later strength is not facilitated. The main hydration products of the invention are hydrated calcium silicate gel substances, calcium hydroxide, hydrated calcium aluminate and other crystals, the crystal-gel ratio of which is relatively reasonable, the crystal substances have smaller drying shrinkage, and the invention can play a role in limiting the shrinkage of gel substances, so that the solidified soil body can not generate a large number of cracks, and the durability is improved.
Further, the textile printing and dyeing sludge is the sludge obtained by filtering wastewater in the spinning, printing and dyeing and weaving processes. Textile printing and dyeing sludge can be divided into two major classes, organic sludge and inorganic sludge. The biological sludge is organic sludge, which takes organic matters as main components, and typical organic sludge is organic matter sludge removed by secondary sedimentation tank residual activated sludge, primary sedimentation tank and floatation tank, etc., and is high in organic matter content and easy to decompose and stink. Inorganic sludge is sludge produced by a physical and chemical treatment method, such as coagulating sedimentation or air floatation pollutants, which is usually not easy to decompose and has low water content, and inorganic matters are used as main components, namely sludge. In the prior art, the amount of organic sludge is often higher than that of inorganic sludge. The textile printing and dyeing sludge often contains more complex components due to dye, sizing agent, auxiliary agent and the like, wherein the dye has a structure of nitro and amino compounds and heavy metal elements such as copper, chromium, zinc, arsenic and the like, has larger biotoxicity and has larger pollution to the environment. If textile printing sludge is directly used as one of the raw materials of the soil cement, serious secondary pollution to the environment may be caused because the textile printing sludge contains a large amount of harmful microorganisms, viruses and other organic pollutants. According to the invention, the textile printing and dyeing sludge is subjected to calcination treatment to obtain the calcined textile printing and dyeing sludge, so that organic substances in the textile printing and dyeing sludge can be removed, the cured soil body is prevented from being decomposed and smelly, and the textile printing and dyeing sludge is subjected to sterilization and disinfection treatment at high temperature, so that the occurrence of pollution is reduced. The main component of the calcined textile printing and dyeing sludge is metal oxide, wherein part of the metal oxide can react with free water in a soil body to generate alkaline substances, and the gelation reaction process can be promoted by adjusting the pH value of the soil body. The addition amount of the calcined textile printing sludge is illustratively 21 parts, 22 parts, 23 parts, 24 parts, 25 parts, 26 parts, 27 parts, 28 parts, 29 parts, but is not limited thereto. Preferably, the addition amount of the calcined textile printing and dyeing sludge is 22-28 parts.
CaO+Na in the textile printing and dyeing sludge 2 The mass percent of O determines the ability of the calcined textile dye sludge to provide an alkaline environment. The CaO+Na 2 The mass percentage of O is too low, so that the alkaline environment of the prepared soil cementing material is insufficient, enough gel products cannot be stimulated to be produced, a network structure of partial cross-linking cannot be established, and the soil cementing material cannot effectively provide soil compactness; the CaO+Na 2 The mass percentage of O is too high, so that the prepared soil cementing material can realize soil solidification by a large amount of water, and the solidification time is long, which is unfavorable for construction and use. In one embodiment, the textile printing and dyeing sludge comprises the following chemical components in percentage by mass: caO+Na 2 O 53％～60％、SiO 2 1％～4％、Al 2 O 3 1％～2％、Fe 2 O 3 5 to 8 percent of MgO, 1 to 2 percent of MgO and 25 to 35 percent of LOI. In addition, in one embodiment, the particle size of the calcined textile printing sludge is less than or equal to 75 μm; preferably, the particle size of the calcined textile printing and dyeing sludge is 30-40 mu m, and the calcined textile printing and dyeing sludge can assist in improving the soil body strength.
Similarly, the green mud for papermaking is a substance separated from green liquor in an alkali recovery causticizing section of a pulping and papermaking enterprise, and has complex components, and the main components are calcium carbonate and other insoluble substances. Because the green mud of papermaking has not much value for paper mill, so often directly pile up it as the discarded object open air or landfill on spot, this not only occupies valuable land resource, but also easily causes groundwater pollution and other environmental problems. According to the invention, the green papermaking sludge is calcined to obtain calcined green papermaking sludge, so that the fine fibers, harmful microorganisms, viruses and other organic pollutants in the green papermaking sludge can be removed, and the occurrence of pollution is reduced. Moreover, because the green mud for papermaking contains CaCO as the main component 3 If the green mud is directly used as the raw material of soil cementing material, a large amount of CaCO is produced when the green mud is mixed with soft soil in the later period 3 The coagulation time is too long, and the strength of the solidified soil body is adversely affected. Illustratively, the calcined papermaking green mud is added in an amount of 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, 16 parts, 17 parts, 18 parts, 19 parts, but is not limited thereto. Preferably, the addition amount of the calcined papermaking green mud is 12-18 parts.
The main component of the calcined papermaking green mud is metal oxide, wherein part of the metal oxide can react with free water in a soil body to generate alkaline substances, and the pH value of the soil body is regulated to promote the gelatinization reaction process. CaO+Na in the green mud of papermaking 2 The mass percent of O determines the ability of the calcined papermaking green sludge to provide an alkaline environment. The CaO+Na 2 The too low mass percentage of O can cause insufficient alkaline environment of the prepared soil cementing material, can not excite the production of enough gel products and can not establish a network structure with partial crosslinking, thereby causing that the soil cementing material can not effectively provide soil mass densityDegree of solidity; the CaO+Na 2 The mass percentage of O is too high, so that the prepared soil cementing material can realize soil solidification by a large amount of water, and the solidification time is long, which is unfavorable for construction and use. In one embodiment, the papermaking green sludge comprises the following chemical components in percentage by mass: caO+Na 2 O 50％～60％、SiO 2 5％～7％、Al 2 O 3 1％～2％、Fe 2 O 3 4-8% and LOI 28-37%. In addition, in one embodiment, the calcined papermaking green sludge has a particle size of 75 μm or less; preferably, the particle size of the calcined papermaking green mud is 20-30 mu m, and the fine papermaking green mud can assist in improving the soil body strength.
In the chemical components of the textile printing and dyeing sludge and the papermaking green sludge, caO and Na are contained 2 The mass ratio of O affects the final soft soil curing effect, and the content of CaO is too high, which leads to Ca (OH) exudation easily in the cured soil 2 ，Ca(OH) 2 The calcium carbonate is generated by reaction with carbon dioxide in the air, so that the solidified soil blocks are easy to cause phenomena of surface peeling, chip falling, even cracks and the like; the Na is 2 The content of O is too high, so that the content of soluble salt is increased, and the soluble salt can have certain crystallization water along with water evaporation and recrystallization, so that the volume is increased, an expansion phenomenon is generated, larger expansion stress is generated in the pores of the solidified soil, and the strength of the solidified soil is reduced. In one embodiment, caO and Na in the chemical composition of the textile printing sludge and the green sludge 2 The mass ratio of O is (4-5): (5-6).
The main component of the soil cementing material provided by the invention is ceramic powder. The ceramic powder is schematically added in an amount of 42 parts, 43 parts, 44 parts, but is not limited thereto. Preferably, the ceramic powder is added in an amount of 41.5 parts to 44.5 parts. Preferably, the ceramic powder is waste slag powder of sanitary ceramic or building ceramic, and the slag is fine and smooth and has high volcanic ash activity. In one embodiment, the ceramic powder comprises the following chemical components in percentage by mass: caO 1-5%, siO 2 12％～21％、Al 2 O 3 60％～75％、Fe 2 O 3 1％～3wt％、Na 2 O1-5 wt%, mgO 1-5 wt% and LOI 1-5 wt%. Under the condition, the ceramic powder has enough active substances to react with calcium hydroxide to generate products such as hydrated calcium silicate, hydrated calcium aluminate and the like, the soil particles are cemented, and the soil body strength is improved. In one embodiment, the particle size of the ceramic powder is less than or equal to 75 μm, preferably, the particle size of the ceramic powder is 20 μm-30 μm, and the physical filling effect of the ceramic powder can fill the pores and improve the compactness of the soil body.
The aluminum slag powder is the waste slag of aluminum profile production, and the main active component of the aluminum slag powder is Al 2 O 3 The original aluminum slag contains aluminum nitride, generates ammonia gas when meeting water, and needs to be dried after a water washing process. The aluminum slag powder is schematically added in an amount of 6 parts, 7 parts, 8 parts, 9 parts, but is not limited thereto. Preferably, the aluminum slag powder is added in an amount of 5.5 to 9.5 parts. In one embodiment, the aluminum slag powder comprises the following chemical components in percentage by mass: caO 1-2%, siO 2 4％～8％、Al 2 O 3 70％～84％、Fe 2 O 3 2 to 5 percent of MgO, 8 to 15 percent of MgO and 0.1 to 1 percent of LOI. The grain diameter of the aluminum slag powder is less than or equal to 75 mu m; preferably, the grain diameter of the ceramic powder is 60-70 mu m, and the physical filling effect of the aluminum slag powder can fill the pores and improve the compactness of soil.
The lithium slag is solid waste generated after the lithium carbonate is extracted by a sulfuric acid method, the main phase is an amorphous aluminosilicate phase, the pozzolanic activity is realized, and the contained sulfate can react with hydrated calcium aluminate to generate ettringite with expansion characteristic, so that high-pore soft soil is filled, and the curing strength is improved. The addition amount of the lithium slag is illustratively 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, 16 parts, 17 parts, 18 parts, 19 parts, but is not limited thereto. Preferably, the addition amount of the lithium slag is 12-18 parts. In one embodiment, the lithium slag comprises the following chemical components in percentage by mass: caO 4-5%, siO 2 50％～60％、Al 2 O 3 18％～25％、Fe 2 O 3 0.1％～1.5％、SO 3 8％～15％、LOI 8％～12％。
In one embodiment, the lithium slag has a particle size of 15 μm or less. Preferably, the lithium slag is ground, and the specific surface area of the lithium slag is controlled to be more than or equal to 400m through a grinding process 2 And (3) grinding to reduce the grain size of the lithium slag particles, disordered the structure and forming an amorphous aluminosilicate phase on the surface. The reactivity of lithium slag can be improved through physical grinding, and the micro aggregate effect can be better exerted. Preferably, the particle size of the lithium slag is 1 μm to 10 μm.
Correspondingly, the invention provides a preparation method of the soil cementing material, which comprises the following steps:
s1, preparing textile printing and dyeing sludge and papermaking green sludge;
s2, calcining the textile printing and dyeing sludge and the papermaking green mud to obtain calcined textile printing and dyeing sludge and calcined papermaking green mud;
s3, mixing 40-45 parts of ceramic powder, 5-10 parts of aluminum slag powder, 20-30 parts of calcined textile printing and dyeing sludge, 10-20 parts of calcined papermaking green mud and 10-20 parts of lithium slag according to parts by weight to obtain a finished product.
In one embodiment, when the textile printing and dyeing sludge is subjected to calcination treatment, the calcination temperature is 550-1000 ℃; when the green mud is calcined, the calcining temperature is 800-900 ℃. Under the calcination treatment condition, organic substances in the textile printing and dyeing sludge can be removed to prevent the solidified soil from being decomposed and smelly, and the textile printing and dyeing sludge is sterilized and disinfected at high temperature, so that pollution is reduced. And the green mud is calcined to obtain calcined green mud, which can remove fine fibers, harmful microorganisms, viruses and other organic pollutants in the green mud, and reduce the occurrence of pollution. Furthermore, the calcination treatment can remove CaCO in the green mud of papermaking 3 ，CaCO 3 Decomposing in the calcination process to reduce the CaCO content in green mud 3 The problem of overlong coagulation time caused by the green mud of papermaking is relieved 3 And bring about the strength of the solidified soil bodyAdversely affecting the performance of the device.
The invention is further illustrated by the following examples:
example 1
The embodiment provides a soil cementing material, which comprises the following components in parts by weight: 45 parts of ceramic powder, 5 parts of aluminum slag powder, 20 parts of calcined textile printing and dyeing sludge, 10 parts of calcined green mud for papermaking and 20 parts of lithium slag;
the calcined textile printing and dyeing sludge is a product obtained by calcining textile printing and dyeing sludge at 900 ℃, and the calcined papermaking green mud is a product obtained by calcining papermaking green mud at 900 ℃.
Wherein the chemical components of the ceramic powder are as follows:
CaO 1.79wt％，Al 2 O 3 74.49wt％，SiO 2 12.61wt％，Fe 2 O 3 2.12wt％，Na 2 O2.85wt％，MgO 3.47wt％，LOI 2.67wt％。
the aluminum slag powder comprises the following chemical components:
CaO 1.64wt％，SiO 2 4.89wt％，Al 2 O 3 79.95wt％，Fe 2 O 3 3.56wt％，MgO 9.28wt％，LOI 0.68wt％。
the chemical components of the textile printing and dyeing sludge are as follows:
CaO+Na 2 O 53.46wt％，SiO 2 3.19wt％，Al 2 O 3 1.25％，Fe 2 O 3 6.23wt％，MgO1.49wt％，LOI 34.38wt％。
the chemical components of the papermaking green mud are as follows:
CaO+Na 2 O 53.38wt％，SiO 2 5.49wt％，Al 2 O 3 1.64wt％，Fe 2 O 3 5.54wt％，LOI 33.95wt％。
CaO and Na in the chemical components of the textile printing and dyeing sludge and the papermaking green sludge 2 The mass ratio of O is 4:6.
the chemical components of the lithium slag are as follows:
CaO 4.63wt％，SiO 2 52.21wt％，Al 2 O 3 20.61％，Fe 2 O 3 0.84wt％，SO 3 9.81wt％，LOI 11.90wt％。
example 2
This example provides a soil cement, which differs from example 1 in that: the coating comprises the following components in parts by weight: 40 parts of ceramic powder, 10 parts of aluminum slag powder, 30 parts of calcined textile printing and dyeing sludge, 10 parts of calcined papermaking green mud and 10 parts of lithium slag. The remainder was the same as in example 1.
Example 3
This example provides a soil cement, which differs from example 1 in that: the chemical components of the textile printing and dyeing sludge are as follows:
CaO+Na 2 O 58.77wt％，SiO 2 2.43wt％，Al 2 O 3 1.3％，Fe 2 O 3 7.59wt％，MgO1.12wt％，LOI 28.8wt％。
the chemical components of the papermaking green mud are as follows:
CaO+Na 2 O 54.78wt％，SiO 2 6.23wt％，Al 2 O 3 1.75wt％，Fe 2 O 3 4.12wt％，LOI 33.12wt％。
CaO and Na in the chemical components of the textile printing and dyeing sludge and the papermaking green sludge 2 The mass ratio of O is 5:5. the remainder was the same as in example 1.
Comparative example 1
This comparative example differs from example 1 in that: the textile printing and dyeing sludge comprises the following chemical components: caO+Na 2 O 52.38、SiO 2 3.46％、Al 2 O 3 1.47％、Fe 2 O 3 7.05%, mgO 1.69%, LOI 33.95%. The remainder was the same as in example 1.
Comparative example 2
This comparative example differs from example 1 in that: the papermaking green mud comprises the following chemical components: caO+Na 2 O 62.03％、SiO 2 5.14％、Al 2 O 3 1.78％、Fe 2 O 3 5.19% and LOI 25.86%. The remainder was the same as in example 1.
Comparative example 3
This comparative example differs from example 1 in that: caO and Na in the chemical components of the textile printing and dyeing sludge and the papermaking green sludge 2 The mass ratio of O is 3:7. the remainder was the same as in example 1.
Comparative example 1
In the comparative example, PO42.5 cement is used as soil cementing material, and the cement is ordinary silicate cement.
The soil cement prepared in examples 1 to 3 and comparative example 1 were used to cure soft soil, and the concrete steps are as follows:
(1) Soil sampling
Soil samples are all taken from a certain construction site in the city of bergamot, the digging depth is 1m, and the soil samples are immediately sealed in a polyethylene bag after being dug, so that the water loss in the storage process is avoided. The basic performance index of the soil sample is shown in table 1.
TABLE 1 basic Properties of soil samples
(2) Soil fixing
The solidified soil molding is referred to JGJ/T233-2011 (cement soil mix design rule), the mixing amount of the soil cementing material is 17% of the mass of dry soil, and the water-cement ratio is 0.7.
Pouring the stirred soil slurry into a cylindrical test mold with the diameter of 50mm and the height of 100mm, vibrating for 2min, trowelling, covering a preservative film, placing the test piece in a standard curing room [ (20+/-5) DEG C, maintaining the test piece at the humidity of more than 95% RH ] for two days, removing the mold, continuing to maintain the test piece, and detecting the permeability coefficient, unconfined compressive strength and unconfined compressive strength loss rate performance indexes of the test piece under different freezing and thawing cycle times of the test piece for 7 days, 14 days and 28 days, wherein the test results are shown in Table 2.
Table 2 test results of each test piece
Further, a drying shrinkage test was performed, and the test method was as follows: the dry shrinkage of the material for the 28 days was measured by referring to JTG E51-2009, test procedure for inorganic binder for highway engineering.
The test results are:
TABLE 3 test block dry shrinkage test results
From the results, the invention adopts ceramic powder, aluminum slag powder, calcined textile dyeing and finishing sludge, calcined pulp green mud and lithium slag to prepare the soil cementing material, fully utilizes solid wastes, relieves the problems of accumulation and abandonment of the solid wastes to a certain extent, improves the utilization rate of the solid wastes, and has good economic and environmental protection benefits. The active substances in the calcined textile dyeing and finishing sludge and the calcined pulp green mud in the soil cementing material can react with water to generate alkaline substances, the ceramic powder, the aluminum slag powder and active silicon and aluminum phases in the lithium slag are dissolved in an alkaline environment, aluminosilicate is promoted to be converted into more stable hydration products, such as calcium silicate hydrate, calcium aluminosilicate hydrate, calcium aluminate hydrate and other gelation products, a network structure is established, and the primary cementing soil particles form a framework structure. Meanwhile, the lithium slag with fine grain size has higher surface energy, can adsorb ions, provides nucleation sites for hydrated calcium silicate, accelerates the hydration of the system and improves the early strength. And the produced hydrated calcium aluminate can generate needle-shaped ettringite with sulfate in lithium slag, and the needle-shaped ettringite can be filled among soil particles, so that the pore structure is further optimized. The internal pore structure is thinned under multiple actions, the expansion and communication of macropores are reduced, and the compactness of soil is improved. The soil cementing material provided by the invention can enhance the compactness and compressive strength of soil, reduce the drying shrinkage of the solidified soil body and improve the durability of the solidified soil.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that changes and modifications may be made without departing from the principles of the invention, such changes and modifications are also intended to be within the scope of the invention.
Claims (6)
1. The soil cementing material is characterized by comprising the following components in parts by weight: 40-45 parts of ceramic powder, 5-10 parts of aluminum slag powder, 20-30 parts of calcined textile printing and dyeing sludge, 10-20 parts of calcined papermaking green mud and 10-20 parts of lithium slag;
the calcined textile printing and dyeing sludge is a product obtained by calcining textile printing and dyeing sludge, and the calcined papermaking green mud is a product obtained by calcining papermaking green mud;
the textile printing and dyeing sludge comprises the following chemical components in percentage by mass: caO+Na 2 O 53%~60%、SiO 2 1%~4%、Al 2 O 3 1%~2%、Fe 2 O 3 5%~8%、MgO 1%~2%、LOI 25%~35%；
The papermaking green mud comprises the following chemical components in percentage by mass: caO+Na 2 O 50%~60%、SiO 2 5%~7%、Al 2 O 3 1%~2%、Fe 2 O 3 4%~8%、LOI 28%~37%；
CaO and Na in the chemical components of the textile printing and dyeing sludge and the papermaking green sludge 2 The mass ratio of O is (4-5): (5-6);
the grain diameter of the ceramic powder is less than or equal to 75 mu m;
the grain diameter of the aluminum slag powder is less than or equal to 75 mu m;
the grain diameter of the calcined textile printing and dyeing sludge is less than or equal to 75 mu m;
the grain diameter of the calcined papermaking green mud is less than or equal to 75 mu m;
the grain diameter of the lithium slag is less than or equal to 15 mu m.
2. The soil cement according to claim 1, wherein the ceramic powder comprises the following chemical components in mass percent: caO 1% -5%, siO 2 12%~21%、Al 2 O 3 60%~75%、Fe 2 O 3 1%~3wt%、Na 2 O 1%~5wt%、MgO 1%~5wt%、LOI 1%~5wt%。
3. The soil cement according to claim 1, wherein the aluminum slag powder comprises the following chemical components in percentage by mass: caO 1% -2%, siO 2 4%~8%、Al 2 O 3 70%~84%、Fe 2 O 3 2%~5%、MgO 8%~15%、LOI 0.1%~1%。
4. The soil cement according to claim 1, wherein the lithium slag comprises the following chemical components in mass percent: caO4% -5% and SiO 2 50%~60%、Al 2 O 3 18%~25%、Fe 2 O 3 0.1%~1.5%、SO 3 8%~15%、LOI 8%~12%。
5. A method of preparing a soil cement according to any one of claims 1 to 4, comprising the steps of:
s1, preparing textile printing and dyeing sludge and papermaking green sludge;
s2, calcining the textile printing and dyeing sludge and the papermaking green mud to obtain calcined textile printing and dyeing sludge and calcined papermaking green mud;
and S3, mixing 40-45 parts of ceramic powder, 5-10 parts of aluminum slag powder, 20-30 parts of calcined textile printing and dyeing sludge, 10-20 parts of calcined papermaking green mud and 10-20 parts of lithium slag according to parts by weight to obtain a finished product.
6. The method for preparing soil cement according to claim 5, wherein when the textile printing and dyeing sludge is subjected to calcination treatment, the calcination temperature is 550-1000 ℃;
when the green mud for papermaking is calcined, the calcining temperature is 800-900 ℃.
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| CN111943573A (en) * | 2020-07-16 | 2020-11-17 | 江西赣锋锂业股份有限公司 | Method for preparing lightweight concrete aerated building block from lithium slag |
| CN112028579A (en) * | 2020-11-04 | 2020-12-04 | 佛山市交通科技有限公司 | Ceramic polishing slag-based foam light soil and preparation method and application thereof |
| CN113999036A (en) * | 2021-07-20 | 2022-02-01 | 苏州市宏宇环境科技股份有限公司 | Expanded ceramsite containing polluted soil and printing and dyeing sludge and preparation method thereof |
| CN113511869A (en) * | 2021-09-13 | 2021-10-19 | 佛山市交通科技有限公司 | Curing agent for deeply stirring mucky soil and preparation method and use method thereof |
| CN114044640A (en) * | 2021-10-28 | 2022-02-15 | 嘉兴绿方舟环保技术有限公司 | Double-component sludge-based non-fired cementing material and preparation method and application thereof |
| CN115231892A (en) * | 2022-06-17 | 2022-10-25 | 中铁投资集团有限公司 | Cement-free muck curing agent and preparation method and application thereof |
| CN115259759A (en) * | 2022-07-28 | 2022-11-01 | 中建八局第三建设有限公司 | Solid waste base composite soil curing agent and preparation method thereof |
| CN116969703A (en) * | 2023-09-18 | 2023-10-31 | 常熟理工学院 | Method for preparing geopolymerized sulphoaluminate cement by using lithium slag and secondary aluminum ash |
| CN117123591A (en) * | 2023-10-26 | 2023-11-28 | 常熟理工学院 | Method for dry dechlorination of waste incineration fly ash and synchronous preparation of liquid chlorine and solidified soil |
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