CN113292306A - Roadside filling material - Google Patents
Roadside filling material Download PDFInfo
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- CN113292306A CN113292306A CN202110749076.4A CN202110749076A CN113292306A CN 113292306 A CN113292306 A CN 113292306A CN 202110749076 A CN202110749076 A CN 202110749076A CN 113292306 A CN113292306 A CN 113292306A
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- calcium carbonate
- fibres
- filling material
- retarder
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
- C04B28/142—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing synthetic or waste calcium sulfate cements
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/0409—Waste from the purification of bauxite, e.g. red mud
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
- C04B18/08—Flue dust, i.e. fly ash
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
- C04B18/10—Burned or pyrolised refuse
- C04B18/101—Burned rice husks or other burned vegetable material
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/12—Waste materials; Refuse from quarries, mining or the like
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/14—Waste materials; Refuse from metallurgical processes
- C04B18/141—Slags
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/14—Waste materials; Refuse from metallurgical processes
- C04B18/141—Slags
- C04B18/142—Steelmaking slags, converter slags
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/14—Waste materials; Refuse from metallurgical processes
- C04B18/141—Slags
- C04B18/144—Slags from the production of specific metals other than iron or of specific alloys, e.g. ferrochrome slags
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
- C04B28/142—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing synthetic or waste calcium sulfate cements
- C04B28/143—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being phosphogypsum
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
- C04B28/142—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing synthetic or waste calcium sulfate cements
- C04B28/144—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being a flue gas desulfurization product
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00724—Uses not provided for elsewhere in C04B2111/00 in mining operations, e.g. for backfilling; in making tunnels or galleries
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
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- 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
Abstract
The invention relates to a paste roadside filling material prepared by using low-cost multi-element solid waste in a synergistic manner. The material can be fully mixed by a one-pot method, so that two or more stirring devices are avoided, a plurality of pipelines are not needed to be output, the input cost of the material and the equipment is lower, and the filling efficiency is high. By changing the water-cement ratio of the material, the mechanized continuous and rapid filling can be ensured, sufficient support resistance is timely provided for the top plate, and the stability of the overlying strata is ensured. The method meets the requirements of roadside filling gob-side entry retaining engineering, realizes resource utilization of a large amount of solid wastes, saves resource and energy, and improves the local ecological environment.
Description
Technical Field
The invention belongs to the field of coal mine roadway engineering support, and relates to a coal mine roadside filling material for roadside support.
Background
The top and bottom plates of the coal seam are usually shale containing a large amount of expansive minerals, and the conditions of large deformation, large expansion and the like can occur under the action of high stress, so that the roadway is kept smooth by adopting roadway support and the surrounding rock is stable, which has important significance for coal mine construction and production. High-water materials and paste materials are two main stream materials for roadside filling, but the traditional roadside support has the defects of high material cost, large deformation of a filling body, high labor cost investment, more process equipment investment and the like. If the method can scientifically and effectively apply a large amount of solid wastes to roadway engineering support of coal mines, the method has important positive significance for promoting the solid wastes to realize green, efficient, high-quality, high-value and large-scale utilization.
Disclosure of Invention
The roadside filling material comprises the following raw materials: 50 parts of solid waste material, 20 parts of cement clinker and 30 parts of stone powder, wherein the total amount of the four ingredients is 100 parts after mixing, 0.05 part of retarder, 0.05 part of fiber, 0.02 part of early strength agent and 40-60 parts of water are added into each 100 parts of mixed ingredients, the stone powder is calcium carbonate by weight, wherein 50 parts of solid waste material comprise 20 parts of industrial by-product gypsum, and the rest 30 parts of solid waste material are selected from one or more of fly ash, red mud, granulated blast furnace slag, electrolytic manganese slag, rice hull ash, smelting waste residue or coal gangue.
Further, the industrial byproduct gypsum is any one of phosphogypsum, desulfurized gypsum, titanium gypsum, citric acid gypsum, titanium gypsum, fluorgypsum, salt gypsum, boron gypsum and the like, and the weight ratio of water is 5-20%.
Further, the calcium carbonate is selected from: any one of heavy calcium carbonate, light calcium carbonate, active light calcium carbonate and superfine calcium carbonate or any combination of the heavy calcium carbonate, the light calcium carbonate, the active light calcium carbonate and the superfine calcium carbonate.
Further, the cement clinker is any one of ordinary portland cement, sulphoaluminate cement and calcium aluminate cement or any combination of the ordinary portland cement, the sulphoaluminate cement and the calcium aluminate cement.
Further, the smelting waste slag is any one of yellow phosphorus slag, ferroalloy slag, steel slag and the like.
Further, the retarder is any one of lignosulfonate retarder, molasses retarder, hydroxycarboxylic acid and its salt retarder, animal protein retarder and borate retarder or any combination of the above retarders.
Further, the fiber is one of synthetic fiber (such as polypropylene fiber, polyacrylonitrile fiber and polyester fiber), plant fiber (such as bamboo fiber, flax fiber, soybean protein fiber and corn fiber), mineral fiber (such as basalt fiber) and alkali-resistant glass fiber or any mixture of the synthetic fiber, the vegetable fiber, the flax fiber, the soybean protein fiber and the corn fiber, and the fiber diameter is less than or equal to 200 mu m and the length is less than or equal to 10 mm.
The invention has the following beneficial effects:
1. the invention adopts a low-cost multi-element solid waste synergistic mode to prepare the novel paste material suitable for roadside filling, can further improve the comprehensive utilization level of the solid waste, saves the engineering cost of roadway support, and provides powerful support for high-quality development of regional economy and society.
2. Compared with other filling materials, the filling material provided by the invention is simpler and easier to operate, the materials can be fully mixed by a one-pot method, the use of two or more stirring devices is avoided, a plurality of pipelines are not needed for outputting, the equipment investment cost is lower, the defects of other filling systems are overcome, and the filling efficiency is higher.
3. The prior high-water-content material can realize higher filling volume, but influences the final setting strength of the material to a greater extent, and the material developed by the project can meet the requirements of construction process, filling body performance, water conservation and the like under the condition of more reasonable water-cement ratio.
4. Short coagulation time, high early strength and adjustable strength. The compressive strength of the material can reach more than 10MPa within 1 day after the material is gelled, and can reach more than 13MPa within 3 days.
5. The material has good plasticity and high breaking strength, and the breaking strength can reach more than 1MPa within 1 day and more than 3MPa within 3 days after the material is gelled.
6. One of the main components of the gelled material is calcium sulfate dihydrate, and due to the existence of crystal water, the gelled material has good fire resistance, has certain functions of temperature regulation and humidity regulation, and can play certain roles of regulation and buffering on the environmental temperature and humidity.
7. The components of the material can generate the complementary action of volume shrinkage and expansion at the later stage of gelation, thereby avoiding the situations of obvious strength reduction caused by cracking or expansion of a hardened body due to shrinkage, and the like.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. However, the examples are intended to illustrate embodiments of the invention without departing from the scope of the subject matter of the invention, and the scope of the invention is not limited by the examples.
Example 1
The roadside filling material comprises the following raw materials in percentage by mass: 20 parts of electrolytic manganese slag, 20 parts of industrial byproduct gypsum, 10 parts of fly ash, 20 parts of cement clinker and 30 parts of stone powder, wherein the total amount of the ingredients is 100 parts. 0.05 part of retarder, 0.05 part of fiber, 0.02 part of early strength admixture and 60 parts of water are added into each 100 parts of mixed ingredients, and the parts are calculated by weight. The retarder is lignosulfonate retarder.
Example 2
The roadside filling material comprises the following raw materials in percentage by mass: 20 parts of industrial byproduct gypsum, 20 parts of red mud, 10 parts of fly ash, 20 parts of cement clinker and 30 parts of stone powder, wherein the total amount of the ingredients is 100 parts. 0.05 part of retarder, 0.05 part of fiber, 0.02 part of early strength admixture and 60 parts of water are added into each 100 parts of mixed ingredients. The retarder is lignosulfonate retarder.
Example 3
The roadside filling material comprises the following raw materials in percentage by mass: 20 parts of industrial byproduct gypsum, 20 parts of smelting waste residues, 10 parts of coal gangue, 20 parts of cement clinker and 30 parts of stone powder, wherein the total amount of the ingredients is 100 parts. 0.05 part of retarder, 0.05 part of fiber, 0.02 part of early strength agent and 50 parts of water are added into each 100 parts of mixed ingredients. The retarder is lignosulfonate retarder.
Example 4
The roadside filling material comprises the following raw materials in percentage by mass: 20 parts of industrial by-product gypsum, 20 parts of rice hull ash, 10 parts of fly ash, 20 parts of cement clinker and 30 parts of stone powder, wherein the total amount of the ingredients is 100 parts. 0.05 part of retarder, 0.05 part of fiber, 0.02 part of early strength admixture and 40 parts of water are added into each 100 parts of mixed ingredients. The retarder is lignosulfonate retarder.
The materials of examples 1-4 were tested for compressive strength, flexural strength and softening coefficient after 7 days, and the test data are shown in tables 1, 2 and 3. The roadside filling material product prepared by adopting the low-cost multi-component industrial solid waste as the main raw material has the advantages of early strength, flame retardance, water resistance, good pumping property and the like, and is suitable for coal mine roadway support engineering.
TABLE 1 compressive Strength (MPa)
TABLE 2 breaking strength (MPa)
TABLE 3 softening coefficient
The above embodiments are not intended to limit the present invention in any way, and although the present invention has been disclosed by the above embodiments, the present invention is not limited thereto. Any simple modification, equivalent change and modification of the above embodiments by the technical essence of the present invention by those skilled in the art still belong to the technical scope of the present invention.
Claims (10)
1. The roadside filling material comprises the following raw materials: 50 parts of solid waste material, 20 parts of cement clinker and 30 parts of stone powder, wherein the total amount of the four ingredients is 100 parts after mixing, 0.05 part of retarder, 0.05 part of fiber, 0.02 part of early strength agent and 40-60 parts of water are added into each 100 parts of mixed ingredients, the stone powder is calcium carbonate by weight, wherein 50 parts of solid waste material comprise 20 parts of industrial by-product gypsum, and the rest 30 parts of solid waste material are selected from one or more of fly ash, red mud, granulated blast furnace slag, electrolytic manganese slag, rice hull ash, smelting waste residue or coal gangue.
2. The roadside filling material as claimed in claim 1, wherein the industrial by-product gypsum is any one of phosphogypsum, desulfurized gypsum, titanium gypsum, citric acid gypsum, titanium gypsum, fluorgypsum, salt gypsum, boron gypsum and the like, and the water content is 5-20% by weight.
3. The roadside filling material as claimed in claim 1, wherein the smelting slag is any one of yellow phosphorus slag, ferroalloy slag, steel slag and the like.
4. A roadside filling material as claimed in claim 1, wherein the calcium carbonate is selected from: any one of heavy calcium carbonate, light calcium carbonate, active light calcium carbonate and superfine calcium carbonate or any combination of the heavy calcium carbonate, the light calcium carbonate, the active light calcium carbonate and the superfine calcium carbonate.
5. The roadside filling material of claim 1, wherein the cement clinker is any one of ordinary portland cement, sulphoaluminate cement, calcium aluminate cement or any combination thereof.
6. The roadside filling material of claim 1, wherein the retarder is any one of lignosulfonate retarder, molasses retarder, hydroxycarboxylic acid and its salt retarder, animal protein retarder, borate retarder or any combination thereof.
7. The roadside filling material of claim 1, wherein the fiber is one of synthetic fiber, plant fiber, mineral fiber, alkali-resistant glass fiber or any mixture of them, the fiber diameter is less than or equal to 200 μm, and the length is less than or equal to 10 mm.
8. A roadside filling material as claimed in claim 7, wherein the synthetic fibres are selected from polypropylene fibres, polyacrylonitrile fibres or polyester fibres, the plant fibres are selected from bamboo fibres, flax fibres, soy protein fibres or corn fibres, and the mineral fibres are selected from basalt fibres.
9. The roadside filling material as claimed in claim 1, wherein the remaining 30 parts of solid waste material consists of 20 parts of electrolytic manganese slag and 10 parts of fly ash, or consists of 20 parts of red mud and 10 parts of fly ash, or consists of 20 parts of smelting waste slag and 10 parts of coal gangue, or consists of 20 parts of rice hull ash and 10 parts of fly ash.
10. The roadside filling material of claim 9, wherein the compressive strength of the material can reach more than 10MPa within 1 day and more than 13MPa within 3 days after the material is gelled; the breaking strength can reach more than 1MPa, more than 3MPa within 3 days, and the softening coefficient is between 0.78 and 0.83 after 7 days.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110749076.4A CN113292306A (en) | 2021-07-01 | 2021-07-01 | Roadside filling material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110749076.4A CN113292306A (en) | 2021-07-01 | 2021-07-01 | Roadside filling material |
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| CN113292306A true CN113292306A (en) | 2021-08-24 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114516745A (en) * | 2022-03-14 | 2022-05-20 | 贵州省建筑材料科学研究设计院有限责任公司 | Gob-side entry retaining roadside filling material with adjustable coagulation, high flow state and high stability and preparation method thereof |
| CN114560676A (en) * | 2022-03-25 | 2022-05-31 | 贵州理工学院 | Ultrahigh water material based on red mud, and preparation method and application thereof |
| CN115321890A (en) * | 2022-08-30 | 2022-11-11 | 霖和气候科技(北京)有限公司 | Solid waste base binder for carbon dioxide sequestration, preparation method and carbon dioxide sequestration method thereof |
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