CN115417611B - Pavement patching material prepared from industrial solid wastes and used for winter construction - Google Patents
Pavement patching material prepared from industrial solid wastes and used for winter construction Download PDFInfo
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- CN115417611B CN115417611B CN202211199528.7A CN202211199528A CN115417611B CN 115417611 B CN115417611 B CN 115417611B CN 202211199528 A CN202211199528 A CN 202211199528A CN 115417611 B CN115417611 B CN 115417611B
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- 239000000463 material Substances 0.000 title claims abstract description 89
- 239000002910 solid waste Substances 0.000 title claims abstract description 48
- 238000010276 construction Methods 0.000 title abstract description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 96
- 229910052742 iron Inorganic materials 0.000 claims abstract description 46
- 239000000843 powder Substances 0.000 claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000002994 raw material Substances 0.000 claims abstract description 12
- 229920001479 Hydroxyethyl methyl cellulose Polymers 0.000 claims abstract description 11
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims abstract description 11
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims abstract description 10
- 239000001110 calcium chloride Substances 0.000 claims abstract description 10
- 229910001628 calcium chloride Inorganic materials 0.000 claims abstract description 10
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 10
- 239000004816 latex Substances 0.000 claims abstract description 10
- 229920000126 latex Polymers 0.000 claims abstract description 10
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 claims abstract description 10
- 229910052808 lithium carbonate Inorganic materials 0.000 claims abstract description 10
- 239000002253 acid Substances 0.000 claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 15
- 238000002360 preparation method Methods 0.000 claims description 15
- 239000002893 slag Substances 0.000 claims description 15
- 239000010959 steel Substances 0.000 claims description 15
- 239000010440 gypsum Substances 0.000 claims description 12
- 229910052602 gypsum Inorganic materials 0.000 claims description 12
- GQCYCMFGFVGYJT-UHFFFAOYSA-N [AlH3].[S] Chemical class [AlH3].[S] GQCYCMFGFVGYJT-UHFFFAOYSA-N 0.000 claims description 10
- 238000001354 calcination Methods 0.000 claims description 10
- JYGQDULZZKKFTG-UHFFFAOYSA-N OS([AlH2])(=O)=O Chemical class OS([AlH2])(=O)=O JYGQDULZZKKFTG-UHFFFAOYSA-N 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 7
- 238000012216 screening Methods 0.000 claims description 7
- 235000019738 Limestone Nutrition 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- 239000006028 limestone Substances 0.000 claims description 6
- 239000003245 coal Substances 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 4
- 239000004575 stone Substances 0.000 claims description 4
- 238000000227 grinding Methods 0.000 claims description 2
- 229920005646 polycarboxylate Polymers 0.000 claims description 2
- 238000007580 dry-mixing Methods 0.000 claims 1
- 239000008030 superplasticizer Substances 0.000 claims 1
- 230000008439 repair process Effects 0.000 abstract description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 3
- 229910052799 carbon Inorganic materials 0.000 abstract description 3
- 239000004568 cement Substances 0.000 description 11
- 238000006703 hydration reaction Methods 0.000 description 5
- 239000000654 additive Substances 0.000 description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 description 4
- 239000011707 mineral Substances 0.000 description 4
- 239000003973 paint Substances 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 230000000996 additive effect Effects 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910001653 ettringite Inorganic materials 0.000 description 3
- 230000036571 hydration Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000011398 Portland cement Substances 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- GVALZJMUIHGIMD-UHFFFAOYSA-H magnesium phosphate Chemical compound [Mg+2].[Mg+2].[Mg+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O GVALZJMUIHGIMD-UHFFFAOYSA-H 0.000 description 1
- 239000004137 magnesium phosphate Substances 0.000 description 1
- 229960002261 magnesium phosphate Drugs 0.000 description 1
- 229910000157 magnesium phosphate Inorganic materials 0.000 description 1
- 235000010994 magnesium phosphates Nutrition 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Images
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
- 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
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/06—Aluminous 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
-
- 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
- C04B7/32—Aluminous 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
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/43—Heat treatment, e.g. precalcining, burning, melting; Cooling
-
- 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
- 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)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Road Paving Structures (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention belongs to the field of solid waste utilization, and provides a pavement patching material prepared from industrial solid waste and used for winter construction, which is prepared from the following raw materials in parts by weight: 45-55 parts of solid waste base iron-rich sulphoaluminate gelled material, 45-55 parts of aggregate, 2-5 parts of calcium chloride, 0.2-0.8 part of lithium carbonate, 0.1-0.3 part of polycarboxylic acid water reducing agent, 1-3 parts of redispersible latex powder and 0.1-0.3 part of hydroxyethyl methyl cellulose ether. The repair material has the advantages of rapid hardening at negative temperature, low cost, less carbon emission, large solid waste utilization amount and the like, can meet the requirement of rapid high-strength repair of the pavement in a negative temperature environment, and has extremely high industrial utilization value.
Description
Technical Field
The invention belongs to the field of solid waste utilization, relates to a cement concrete material, and particularly relates to a solid waste base cement concrete pavement rapid repairing material suitable for winter construction, which can be mainly applied to the emergency repair operation of cement pavements, airport runways, bridges, culverts, tunnels and other projects in low-temperature environments.
Background
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art that is already known to a person of ordinary skill in the art.
At present, most of the existing concrete pavement patching materials cannot meet the requirements of quick hardening, high performance and the like when the temperature is in a negative temperature or in an environment with alternating positive and negative temperatures. According to the requirements of the concrete structure engineering construction and acceptance standard and the concrete quality control standard, extra measures are required to be taken during construction in winter to ensure the construction. The method mainly comprises the following steps: the mixed water is heated to 60-70 ℃ and the temperature for pouring the concrete is not lower than 15 ℃. However, the method has high cost, large energy consumption and complex operation, and the construction quality is difficult to ensure. Meanwhile, at present, portland cement, high-alumina cement, magnesium phosphate cement and the like are mostly adopted as the cementing materials, quartz sand, river sand and the like are used as the aggregates, and the cementing materials and the aggregates have the defects of high production cost, large carbon emission and the like, so that the practical application of the repairing materials is limited.
Disclosure of Invention
In order to solve the problems, the invention provides a preparation method for preparing a pavement patching material applied to winter construction by utilizing industrial solid wastes, which effectively solves the problem that the pavement patching material is difficult to harden in the winter construction process, has low preparation cost, low carbon emission and simple process, and also solves the problem of recycling of the solid wastes.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a solid waste base iron-rich sulphoaluminate cementing material clinker which comprises the following raw materials in parts by weight: 35-43 parts of steel slag powder, 23-29 parts of desulfurized gypsum, 21-26 parts of aluminum ash powder and 9-19 parts of limestone tailing powder; the raw materials are evenly mixed and then calcined for 15-45min at 1150-1250 ℃ to obtain the solid waste base iron-rich sulpho-aluminum series cementing material clinker.
In the second aspect of the invention, the solid waste base iron-rich sulphoaluminate cementing material is provided, and the obtained clinker and 5-15% of desulfurized gypsum are ground into powder with the specific surface area of more than 300m 2 And/kg, obtaining the solid waste base iron-rich sulpho-aluminum series cementing material.
The third aspect of the invention provides a preparation method of a solid waste-based iron-rich sulpho-aluminum system negative-temperature pavement patching material, which comprises the following steps:
and (3) uniformly mixing the solid waste base iron-rich sulphoaluminate cementing material with calcium chloride, lithium carbonate, a polycarboxylic acid water reducing agent, redispersible latex powder and hydroxyethyl methyl cellulose ether in a dry way at one time, and then adding aggregate to carry out secondary mixing, thereby obtaining the solid waste base iron-rich sulphoaluminate negative temperature pavement repairing material.
The invention provides a solid waste base iron-rich sulfur-aluminum series negative temperature pavement patching material, which comprises the following raw materials in parts by weight: 45-55 parts of the solid waste base iron-rich sulphoaluminate cementing material, 45-55 parts of aggregate, 2-5 parts of calcium chloride, 0.2-0.8 part of lithium carbonate, 0.1-0.3 part of polycarboxylic acid water reducing agent, 1-3 parts of redispersible latex powder and 0.1-0.3 part of hydroxyethyl methyl cellulose ether.
The service temperature of the pavement patching material is more than or equal to-20 ℃. When the paint is used at negative temperature, the raw materials are not required to be heated, and the paint can be constructed after water with a proper proportion is added.
The invention has the advantages of
(1) The pavement patching material has the use temperature of more than or equal to-20 ℃, and can be applied in a negative temperature environment without additional measures.
(2) The iron-rich sulphoaluminate cement clinker has the main differences from the common sulphoaluminate cement clinker: fe in clinker of iron-rich sulphoaluminate cementing material 2 O 3 The content of (B) is 12-15wt%, while the content of Fe in the ordinary sulphoaluminate cement clinker 2 O 3 Is only 1 to 3wt%, fe 2 O 3 The increase of the content changes the mineral system of the material, along with Fe 2 O 3 Increased content of some Fe 2 O 3 Promoting the main minerals of the cementing material
So that an orthogonal type->
Into a cubic form
The heat pump water heater has higher hydration heat release and faster hydration heat release rate, thereby being capable of resisting the freezing injury brought by a negative temperature environment; a part of Fe 2 O 3 Iron phase (C) is formed 2 F～C 4 AF)，The heat release rate of the iron phase is more advanced, and the heat release advantage of the material is further improved. On the other hand, after the iron-rich sulfur-aluminum series cementing material is hydrated, hydration products mainly comprise mineral phases such as ettringite, alumina gel and iron gel, hydration reaction is very rapid, the ettringite crystals are rapidly lapped to provide early strength, the alumina gel and the iron gel are filled among the ettringite crystals to effectively reduce the porosity of the material, so that most of the pore diameters in the system are distributed below 200nm, according to the saturated vapor pressure theory, the smaller the pore diameter is, the higher the saturated vapor pressure in the pore is, the lower the freezing point of the solution in the pore is, and most of water in the slurry is not frozen under the negative temperature condition. Accordingly, the cube type->
The iron-rich sulphoaluminate cementing material with higher content of iron phase minerals is more suitable for negative temperature repair than the common sulphoaluminate cement.
(3) The additive used in the invention comprises an antifreezing component, a water reducing component, an early strength component, a bonding component and a water retention component, the selected additive can be well adapted with the solid waste base iron-rich sulpho-aluminum series cementing material, other impurity ions are not introduced, and meanwhile, the additive amount is less, so that the strength performance of the material can be ensured while the constructability of the material is maintained.
(4) The invention uses a large amount of solid wastes and reduces the production cost of the repair material. Meanwhile, the problem of mass stockpiling of solid wastes is solved.
(5) The invention can lead the repairing material to obtain better performance under the condition of lower production cost.
(6) The preparation method is simple, strong in practicability and easy to popularize.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are included to explain the exemplary embodiments of the invention and the description and are not intended to limit the invention.
FIG. 1 is a flow chart of the preparation of the repairing material of the present invention.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. 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 invention belongs.
On the one hand, the solid waste base iron-rich sulphoaluminate cementing material clinker comprises the following raw materials in parts by mass: wherein, the steel slag powder is 35 to 43 parts, the desulfurized gypsum is 23 to 29 parts, the aluminum ash powder is 21 to 26 parts, and the limestone tailing powder is 9 to 19 parts. The raw material calcination temperature is 1150-1250 ℃, the calcination time is 15-45min, and the solid waste base iron-rich sulpho-aluminum series cementing material clinker can be obtained.
The invention also provides a solid waste base iron-rich sulphoaluminate cementing material, which is prepared by grinding the clinker and 5-15% of desulfurized gypsum until the specific surface area is more than 300m 2 And/kg, obtaining the solid waste base iron-rich sulpho-aluminum series cementing material.
The invention also provides a preparation method of the solid waste base iron-rich sulphoaluminate negative temperature pavement patching material, which comprises the steps of mixing the solid waste base iron-rich sulphoaluminate cementing material with additives such as calcium chloride, lithium carbonate, a polycarboxylic acid water reducing agent, redispersible latex powder, hydroxyethyl methyl cellulose ether and the like uniformly in a dry way at one time, and then adding aggregate to carry out secondary mixing, thereby obtaining the solid waste base iron-rich sulphoaluminate negative temperature pavement patching material.
The aggregate adopted by the invention is at least one of steel slag/coal gangue/stone powder.
In some embodiments, the aggregate does not need to be ground, and is directly used as the repair material aggregate after being subjected to a screening-crushing-screening process, wherein the screening interval is 0-1.25mm, 1.25-2.5mm and 2.5-5mm. Wherein the proportion of the aggregate is 15-45% for 2.5-5mm, 35-75% for 1.25-2.5mm and 10-25% for 0-1.25 mm.
In some embodiments, the content of free CaO in the steel slag as the aggregate is not higher than 7% so as to ensure the stability of the material, and the coal gangue and the stone powder do not have requirements.
In some embodiments, the solid waste based iron-rich sulfur-aluminum series cementing material comprises 45-55 parts by weight of solid waste based iron-rich sulfur-aluminum series cementing material, 45-55 parts by weight of aggregate such as steel slag/coal gangue/stone powder, 2-5 parts by weight of calcium chloride, 0.2-0.8 part by weight of lithium carbonate, 0.1-0.3 part by weight of polycarboxylic acid water reducing agent, 1-3 parts by weight of redispersible latex powder and 0.1-0.3 part by weight of hydroxyethyl methyl cellulose ether.
The service temperature of the pavement patching material is more than or equal to-20 ℃. When the paint is used at negative temperature, the raw materials are not required to be heated, and the paint can be constructed after water with a proper proportion is added.
In some embodiments, the material mixing water requires the water temperature to be above 5 ℃ and the water-material ratio is 0.12-0.15, so that the hydration reaction is ensured.
The present invention is described in further detail below with reference to specific examples, which should be construed as illustrative rather than restrictive.
In the following examples of the present invention,
calcium chloride and lithium carbonate are analytical pure reagents purchased from the national medicine group.
The polycarboxylate water reducer is a chemically pure high-performance water reducer purchased from Shandonghua construction science and technology Limited.
Redispersible latex powders are available from Shandong Youso chemical technology, inc.
Hydroxyethyl methyl cellulose ether was purchased from Shandong Youso chemical science and technology, inc.
The temperature of the mixing water was 5 ℃.
The ingredients of the cement are shown in Table 1.
Table 1 chemical composition of raw materials (wt.%)
The preparation method of the aggregate comprises the following steps: crushing and screening the steel slag, wherein the grain size of 2.5-5mm is 15%, the grain size of 1.25-2.5mm is 75%, and the grain size of 0-1.25mm is 10%.
Example 1:
a pavement patching material, comprising the following components: 47.8 parts of a cementing material, 47.8 parts of an aggregate, 0.12 part of a water-to-material ratio, 3 parts of calcium chloride, 0.2 part of lithium carbonate, 0.1 part of a polycarboxylic acid water reducing agent, 1 part of redispersible latex powder and 0.1 part of hydroxyethyl methyl cellulose ether.
The preparation method of the cementing material comprises the following steps: 37 parts of steel slag, 28 parts of desulfurized gypsum, 24 parts of aluminum ash and 11 parts of limestone tailings, wherein the calcining temperature is 1250 ℃, the calcining time is 45min, and the steel slag and 5 percent desulfurized gypsum are uniformly ground to obtain powder with the specific surface area of 300m 2 /kg。
The water-material ratio of the concrete pavement patching material in use is 0.12. The curing temperature was-20 ℃ and the compressive strength and the adhesive strength of the material were measured.
Example 2:
a pavement patching material, comprising the following components: 45 parts of cementing material, 50 parts of aggregate, 0.12 part of water-material ratio, 1.9 parts of calcium chloride, 0.8 part of lithium carbonate, 0.2 part of polycarboxylic acid water reducing agent, 2 parts of redispersible latex powder and 0.1 part of hydroxyethyl methyl cellulose ether,
the preparation method of the cementing material comprises the following steps: 37 parts of steel slag, 28 parts of desulfurized gypsum, 24 parts of aluminum ash and 11 parts of limestone tailings, wherein the calcining temperature is 1250 ℃, the calcining time is 45min, and the steel slag and 5 percent of desulfurized gypsum are uniformly ground into powder until the specific surface area is 300m 2 /kg。
The preparation method of the aggregate comprises the following steps: crushing and screening the steel slag, wherein the grain size of 2.5-5mm is 15%, the grain size of 1.25-2.5mm is 75%, and the grain size of 0-1.25mm is 10%.
The water-material ratio of the concrete pavement patching material in use is 0.12. The curing temperature was-20 ℃ and the compressive strength of the material was measured.
Example 3:
different from the embodiment 1, the preparation method of the cementing material comprises the following steps of 37 parts of steel slag, 28 parts of desulfurized gypsum, 24 parts of aluminum ash and 11 parts of limestone tailings, wherein the calcining temperature is 1180 ℃, the calcining time is 15min, and the mixture is uniformly ground with 15 percent of desulfurized gypsum until the specific surface area is 300m 2 /kg。
Example 4:
different from the embodiment 1, the aggregate preparation method comprises the following steps: crushing and sieving coal gangue to obtain 15% of 2.5-5mm, 75% of 1.25-2.5mm and 10% of 0-1.25 mm.
Example 5:
the curing temperature was 20 ℃ different from that of example 1.
After the prepared rapid repair material is formed, the mechanical property test is carried out according to a cement mortar strength test method, and the tensile bond strength test is carried out according to a building mortar basic performance test method standard.
From the compressive strength, the compressive property of the pavement repairing material prepared by the invention obviously meets the requirement of JT/T1211.1-2018 for the repairing material in the rapid repairing material for cement concrete for highway engineering.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A preparation method of a solid waste base iron-rich sulfur-aluminum series negative temperature pavement patching material is characterized by comprising the following steps: the solid waste base iron-rich sulfur-aluminum series negative temperature pavement repairing material is composed of the following raw materials in parts by weight: 45-55 parts of solid waste base iron-rich sulpho-aluminum series cementing material, 45-55 parts of aggregate, 2-5 parts of calcium chloride, 0.2-0.8 part of lithium carbonate, 0.1-0.3 part of polycarboxylate superplasticizer and redispersible latex powder1-3 parts of hydroxyethyl methyl cellulose ether, 0.1-0.3 part of hydroxyethyl methyl cellulose ether; the solid waste base iron-rich sulphoaluminate gelled material clinker is composed of the following raw materials in parts by weight: 35-43 parts of steel slag powder, 23-29 parts of desulfurized gypsum, 21-26 parts of aluminum ash powder and 9-19 parts of limestone tailing powder; the calcination temperature of the raw materials is 1150-1250 ℃, and the calcination time is 15-45min; fe in the solid waste base iron-rich sulphoaluminate cementing material clinker 2 O 3 The content of (A) is 12-15wt%; homogenizing and grinding solid waste base iron-rich sulphoaluminate cementing material clinker and 5% -15% of desulfurized gypsum to specific surface area of more than 300m 2 Per kg, preparing a solid waste base iron-rich sulpho-aluminum series cementing material; uniformly dry-mixing the solid waste base iron-rich sulphoaluminate cementing material with calcium chloride, lithium carbonate, a polycarboxylic acid water reducing agent, redispersible latex powder and hydroxyethyl methyl cellulose ether at one time, and then adding aggregate for secondary mixing to obtain the solid waste base iron-rich sulphoaluminate negative temperature pavement repairing material; the service temperature of the solid waste-based iron-rich sulfur-aluminum series negative-temperature pavement repairing material is more than or equal to-20 ℃.
2. The method for preparing the solid waste base iron-rich sulphoaluminate negative temperature pavement patching material of claim 1, wherein the solid waste base iron-rich sulphoaluminate negative temperature pavement patching material can be used after being mixed with water, the water temperature of the mixed water is more than 5 ℃, and the water-material ratio is 0.12-0.15.
3. The solid waste base iron-rich sulfur aluminum series negative temperature pavement patching material is characterized by being prepared by the preparation method of claim 1.
4. The solid waste based iron-rich sulfur-aluminum series negative temperature pavement patching material of claim 3, wherein the aggregate is at least one of steel slag, coal gangue and stone powder.
5. The solid waste base iron-rich sulphoaluminate negative temperature pavement patching material of claim 3, wherein the aggregate is not required to be ground, and is directly used as patching material aggregate after being subjected to screening, crushing and screening processes, and the screening interval is 0-1.25mm, 1.25-2.5mm and 2.5-5mm.
6. The solid waste base iron-rich sulfur-aluminum series negative temperature pavement patching material as claimed in claim 3, wherein the aggregate ratio is as follows: 15-45% of 2.5-5mm, 35-75% of 1.25-2.5mm and 10-25% of 0-1.25 mm.
7. The solid waste iron-rich sulphoaluminate negative temperature pavement patching material of claim 3, wherein when the steel slag is used as the aggregate, the content of free CaO is not higher than 7%.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211199528.7A CN115417611B (en) | 2022-09-29 | 2022-09-29 | Pavement patching material prepared from industrial solid wastes and used for winter construction |
| PCT/CN2023/102582 WO2024066530A1 (en) | 2022-09-29 | 2023-06-27 | Pavement repair material prepared from industrial solid waste and used for winter construction |
| GB2407985.7A GB2628055A (en) | 2022-09-29 | 2023-06-27 | Pavement repair material prepared from industrial solid waste and used for winter construction |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211199528.7A CN115417611B (en) | 2022-09-29 | 2022-09-29 | Pavement patching material prepared from industrial solid wastes and used for winter construction |
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| Publication Number | Publication Date |
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| CN115417611A CN115417611A (en) | 2022-12-02 |
| CN115417611B true CN115417611B (en) | 2023-04-11 |
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| CN (1) | CN115417611B (en) |
| GB (1) | GB2628055A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109851304A (en) * | 2019-03-06 | 2019-06-07 | 唐山北极熊建材有限公司 | Repairing material for concrete pavement and its preparation method and application |
| KR102126837B1 (en) * | 2019-07-09 | 2020-06-29 | 주식회사 유니온 | Fast Curing Concrete Composition And Method For Repairing And Rehabilitating Road Pavement thereof |
| CN111777390A (en) * | 2020-07-10 | 2020-10-16 | 江苏建鸿环保材料科技有限公司 | Composite cement-based repairing material, application and use method |
| CN111848066A (en) * | 2020-07-29 | 2020-10-30 | 河南鸿春节能建材科技有限公司 | Rapid road repairing mortar and construction process thereof |
| KR102278206B1 (en) * | 2020-10-28 | 2021-07-19 | 송지연 | Quick-hardening cement concrete composition with improved durability and crack resistance and road repairing method therewith |
| CN113582635A (en) * | 2021-07-30 | 2021-11-02 | 山东高速材料技术开发集团有限公司 | Full-solid-waste water permeable brick and preparation method and application thereof |
| CN113698117B (en) * | 2021-09-17 | 2022-09-23 | 山东大学 | Solid waste based high-iron sulphoaluminate marine gelled material and preparation method and application thereof |
| CN114276094A (en) * | 2021-12-14 | 2022-04-05 | 中国人民解放军军事科学院国防工程研究院 | Quick repair material suitable for engineering in negative temperature environment and preparation method thereof |
| CN115417611B (en) * | 2022-09-29 | 2023-04-11 | 山东大学 | Pavement patching material prepared from industrial solid wastes and used for winter construction |
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| CN115417611A (en) | 2022-12-02 |
| WO2024066530A1 (en) | 2024-04-04 |
| GB202407985D0 (en) | 2024-07-17 |
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