CN114105580A - Method for preparing reactive powder concrete by utilizing bulk coal mine industrial solid wastes - Google Patents
Method for preparing reactive powder concrete by utilizing bulk coal mine industrial solid wastes Download PDFInfo
- Publication number
- CN114105580A CN114105580A CN202010892324.6A CN202010892324A CN114105580A CN 114105580 A CN114105580 A CN 114105580A CN 202010892324 A CN202010892324 A CN 202010892324A CN 114105580 A CN114105580 A CN 114105580A
- Authority
- CN
- China
- Prior art keywords
- industrial solid
- coal mine
- solid waste
- powder concrete
- concrete
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
- C04B28/142—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing synthetic or waste calcium sulfate cements
- C04B28/144—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being a flue gas desulfurization product
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
Abstract
The invention discloses a method for preparing active powder concrete by utilizing bulk coal mine industrial solid wastes, which is characterized in that gangue and coal indirect liquefied ash residues are utilized to replace silica fume, fly ash and partial cement, the active powder concrete is prepared on the basis of the recycling of the bulk coal mine industrial solid wastes, the effect of both large-scale solid waste consumption and high-value utilization is realized, and the purposes of reducing the manufacturing cost, reducing sand stones, saving energy and reducing emission are achieved. The concrete prepared by the invention has simple preparation process, low cost, wide material source, large solid waste consumption, the highest compressive strength of 120MPa and the highest flexural strength of 30MPa, and has wide application in the fields of civil engineering building materials and decorative materials.
Description
Technical Field
The invention belongs to the field of civil engineering building materials and decorative materials, and particularly relates to a method for preparing active powder concrete by utilizing bulk coal mine industrial solid wastes.
Background
The method is seriously deficient in petroleum, and the coal liquefaction technology can fundamentally solve the problem of crude oil shortage. Therefore, the road of coal liquefaction synthetic oil is an important trend of the energy strategy in China. With the rapid development of the coal chemical industry, the generation of coal indirect liquefaction ash slag is gradually increased, and the problem of processing and disposing the coal indirect liquefaction ash slag is a hot problem in the coal indirect liquefaction industry at present. At present, the problems of difficult in-situ conversion, low utilization efficiency, inconvenient transportation and the like exist in the solid waste treatment. The green, efficient and high-value resource recycling process of the bulk coal mine solid waste is a current key research problem.
The energy structure of China is mainly coal, and coal accounts for about 75% of energy consumption. Coal makes great contribution to national economic development and brings serious ecological environment and social problems to mine zones. The large-scale mining causes the increase of the quantity of mine wastes, and Chinese mineral resource saving and comprehensive utilization report (2019) shows that the accumulated inventory of tailings and waste rocks in China is nearly 600 hundred million tons at present, wherein 438 hundred million tons of waste rocks are stacked, and 75 percent of waste rocks are coal gangue and waste rocks generated by mining. In large output, the utilization amount is very limited, and the data of Ministry of environmental protection show that the comprehensive utilization rate of the solid waste in China is only 62.2%.
Therefore, a method for effectively utilizing the massive coal mine industrial solid wastes is needed.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a method for preparing reactive powder concrete by utilizing bulk coal mine industrial solid wastes, aiming at the defects of the prior art.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: the method for preparing the reactive powder concrete by utilizing the massive coal mine industrial solid wastes is characterized by comprising the following components in parts by mass: 750 portions of industrial solid waste treatment material 1750 portions, 75 to 1382 portions of gasification fine slag, 8 to 53 portions of desulfurized gypsum, 75 to 1382 portions of cement, 10 to 40 portions of fiber, 6.6 to 26.4 portions of additive and 135 to 525 portions of water.
The industrial solid waste treatment material is coal gangue, gasified coarse slag, boiler slag and fly ash which are subjected to crushing, grinding and sieving treatment, wherein the coal gangue is coarse coal gangue with the particle size of 0.25-5mm or fine coal gangue with the particle size of 0.075-0.25 mm; the grain size of the gasified coarse slag is 0.25-4.75 mm; the grain size of the boiler slag is 0.25-5 mm; the particle size of the dedusting ash is 0.75-0.2 mm; preference is given to the use of reactive powder concrete.
The grain size of the gasified fine slag is 0.075 mm-0.25 mm. The gasified slag adopted by the invention has rich contents of silicon dioxide, aluminum oxide and ferric oxide, the sum of the mass of the silicon dioxide, the aluminum oxide and the ferric oxide can reach more than 70 percent of the mass of the coal indirect liquefaction ash slag, and the silicon dioxide and the aluminum oxide have certain volcanic ash activity, so that the gasified fine slag can replace the fly ash and the silica fume to a certain extent.
The fiber is a steel fiber with the diameter of 0.15-0.25, the length of 10-18mm and the tensile strength of more than 2850 MPa; or polypropylene fiber with diameter of 0.18-0.20mm and length of 18-25; or crack-resistant fiber with diameter of 0.18-0.20 μm and length of 8-10 mm; preference is given to the use of reactive powder concrete.
The desulfurized gypsum is calcium sulfate dihydrate, and the content of the desulfurized gypsum is more than 93 percent.
The cement is P.O42.5 ordinary portland cement or high-grade cement.
The main components of the additive are polyvinyl alcohol monomethyl ether, methacrylic acid esterified firstly, methacrylic acid, sodium gluconate, dextrin, an air entraining agent, a defoaming agent, sodium nitrate, inorganic salt, an alcohol amine reinforcing agent and a dispersing agent. The fiber can be prevented from being agglomerated in the powder material, mixed slurry with certain viscosity and fluidity is formed after water is added, and meanwhile, the parts of water in the building material components can be reduced, so that the compactness of the building material is improved, the internal pore distribution is reduced, and the strength of the building material is further improved.
The preparation method comprises the following steps:
(1) crushing, grinding and screening the coal mine industrial waste residue, and treating the treated material for later use;
(2) mixing the industrial solid waste treatment material, the gasified fine slag, the cement and the desulfurized gypsum, performing dry mixing for 2 minutes, adding the fiber into the mixture, and performing dry mixing for 1-3 minutes to form a mixed dry material;
(3) uniformly mixing the additive and water, adding the mixture into the dry mixed material, continuously stirring for 2-6 minutes, filling a mold, and compacting on a vibration table for 1 minute to prepare a concrete test piece;
(4) standing for 24h at room temperature, demolding, and curing, wherein the curing condition is that the film is cured for 25-27 days under the steam condition of 85-95 ℃, then the film is taken out and cooled at room temperature, or the film is cured for 27 days under the water bath condition of 40-60 ℃, then the film is taken out and cooled at room temperature, or the film is sprayed with moisture and cured for 27 days under the room temperature condition, the compression strength can reach 120MPa at most, and the breaking strength can reach 30MPa at most.
Compared with the prior art, the invention has the following advantages:
(1) the method realizes the reutilization of a large amount of industrial solid wastes of coal mines, realizes the effect of both large-scale solid waste digestion and high-valued utilization, reduces the consumption of sand and cement, and achieves the purposes of energy conservation and emission reduction while preparing the high-strength active powder concrete.
(2) The high-strength active powder concrete prepared by the invention has wide material source, effectively replaces aggregate and active cementing material by coal mine industrial waste residue, and reduces the cost.
(3) The high-strength active powder concrete prepared by the invention has excellent performance, the 28-day compressive strength of the high-strength active powder concrete is not less than 26MPa, the highest compressive strength of the high-strength active powder concrete can reach 120MPa, the 28-day flexural strength of the high-strength active powder concrete is not less than 6MPa, the highest flexural strength of the 28-day flexural strength of the high-strength active powder concrete can reach 30MPa, and the high-strength active powder concrete completely meets the technical regulations of JGJ/T281 and 2012 high-strength concrete application in the current specifications, the test method of the JTG _ D40-2019 highway cement concrete pavement design specifications, the industry standards of JC/T446-2000 concrete pavement building materials, the decorative concrete bricks of GB/T24493-2009, the design specifications of the JTG _ D40-2019 highway cement pavement design specifications, the test method of GB/T35160-2017 synthetic stone materials, the decorative stone composite plates of GB/T290T 59 and 2012, the ultrathin stone plates for JG/T-463-2014 building, GB/T51231-2016 technical Standard for fabricated concrete construction for building materials strength requirements.
Drawings
FIG. 1 is a microstructure characteristic diagram of a high-strength reactive powder concrete prepared in example 1 of the present invention.
Detailed Description
Example 1
The reactive powder concrete of the embodiment is prepared from the following components in parts by mass: 750 parts of industrial solid waste treatment material, 562 parts of gasified fine slag, 38 parts of desulfurized gypsum, 1256 parts of cement, 20 parts of fiber, 64 parts of additive and 430 parts of water. The embodiment comprises the following steps:
(1) the industrial solid waste treatment material is coal gangue, the coal gangue is crushed, ground and screened, and the treatment material with the particle size of 0.25-5mm is selected for standby;
(2) mixing the coal gangue, the gasified fine slag, the cement and the desulfurized gypsum, performing dry mixing for 2 minutes, adding the polypropylene fiber into the mixture, and performing dry mixing for 1-3 minutes to form a mixed dry material;
(3) uniformly mixing the additive and water, adding the mixture into the dry mixed material, continuously stirring for 2-6 minutes, filling a mold, and compacting on a vibration table for 1 minute to prepare a concrete test piece;
(4) and (3) standing at room temperature for 24 hours, demolding, and curing, wherein the curing condition is that the spraying moisture curing is carried out for 27 days at the room temperature. The strength of the concrete test piece meets the requirements of JGJ/T281 and 2012 high-strength concrete application technical specifications and JC/T446-2000 concrete pavior brick building material industry standard on the strength of building materials.
Example 2
The reactive powder concrete of the embodiment is prepared from the following components in parts by mass: 1500 parts of industrial solid waste treatment material, 500 parts of gasified fine slag, 25 parts of desulfurized gypsum, 600 parts of cement, 40 parts of fiber, 37 parts of additive and 258 parts of water. The embodiment comprises the following steps:
(1) the industrial solid waste treatment material is coal gangue, the coal gangue is crushed, ground and screened, and the treatment material with the particle size of 0.075-0.25mm is selected for standby;
(2) mixing the coal gangue, the gasified fine slag, the cement and the desulfurized gypsum, performing dry mixing for 2 minutes, adding the steel fiber into the mixture, and performing dry mixing for 1-3 minutes to form a mixed dry material;
(3) uniformly mixing the additive and water, adding the mixture into the dry mixed material, continuously stirring for 2-6 minutes, filling a mold, and compacting on a vibration table for 1 minute to prepare a concrete building material plate;
(4) and (3) standing at room temperature for 24 hours, demolding, and curing, wherein the curing condition is that the spraying moisture curing is carried out for 27 days at the room temperature. The strength of the concrete building material plate can meet the requirements of GB/T29059-.
Fig. 1 is a characteristic diagram of the microstructure of the reactive powder concrete specimen prepared in this example, and it can be seen from the characteristic diagram that the microstructure of the building material prepared in this example is uniform and dense.
Example 3
The reactive powder concrete of the embodiment is prepared from the following components in parts by mass: 1000 parts of industrial solid waste treatment material, 300 parts of gasified fine slag, 30 parts of desulfurized gypsum, 1170 parts of cement, 40 parts of fiber, 51 parts of additive and 345 parts of water. The embodiment comprises the following steps:
(1) the industrial solid waste treatment material is coal gangue, the coal gangue is crushed, ground and screened, and the treatment material with the particle size of 0.075-0.25mm is selected for standby;
(2) mixing the coal gangue, the gasified fine slag, the cement and the desulfurized gypsum, performing dry mixing for 2 minutes, adding the steel fiber into the mixture, and performing dry mixing for 1-3 minutes to form a mixed dry material;
(3) uniformly mixing the additive and water, adding the mixture into the dry mixed material, continuously stirring for 2-6 minutes, filling a mold, and compacting on a vibration table for 1 minute to prepare a concrete building material plate;
(4) standing for 24h at room temperature, demoulding, and curing at 85-95 deg.C in steam for 25-27 days, taking out, and cooling at room temperature. The strength of the concrete building material plate can meet the requirements of GB/T35160-2017 synthetic stone test method and GB/T51231-2016 assembly type concrete building technical standard on the strength of building materials.
Example 4
The reactive powder concrete of the embodiment is prepared from the following components in parts by mass: 1250 parts of industrial solid waste treatment material, 475 parts of gasified fine slag, 25 parts of desulfurized gypsum, 750 parts of cement, 10 parts of fiber, 28 parts of additive and 287 parts of water. The embodiment comprises the following steps:
(1) the industrial solid waste treatment material is boiler slag, the boiler slag is crushed, ground and screened, and the treatment material with the particle size of 0.25-5mm is selected for standby;
(2) mixing the boiler slag, the gasified fine slag, the cement and the desulfurized gypsum, performing dry mixing for 2 minutes, adding the steel fiber into the mixture, and performing dry mixing for 1-3 minutes to form a mixed dry material;
(3) uniformly mixing the additive and water, adding the mixture into the dry mixed material, continuously stirring for 2-6 minutes, filling a mold, and compacting on a vibration table for 1 minute to prepare a concrete test piece;
(4) and (3) standing at room temperature for 24 hours, demolding, and curing, wherein the curing condition is that the spraying moisture curing is carried out for 27 days at the room temperature. The strength of the concrete test piece meets the requirements of JGJ/T281-2012 high-strength concrete application technical regulation and JTG _ D40-2019 highway cement concrete pavement design specifications on the strength of the building material.
Example 5
The reactive powder concrete of the embodiment is prepared from the following components in parts by mass: 1125 parts of industrial solid waste treatment material, 412 parts of gasified fine slag, 28 parts of desulfurized gypsum, 921 parts of cement, 20 parts of fiber, 26 parts of additive and 316 parts of water. The embodiment comprises the following steps:
(1) in the embodiment, the industrial solid waste treatment material is gasified coarse slag, the gasified slag is screened, and the treatment material with the particle size of 0.25-5mm is selected for standby;
(2) mixing the gasified coarse slag, the gasified fine slag, the cement and the desulfurized gypsum, performing dry mixing for 2 minutes, adding the steel fiber into the mixture, and performing dry mixing for 1-3 minutes to form a mixed dry material;
(3) uniformly mixing the additive and water, adding the mixture into the dry mixed material, continuously stirring for 2-6 minutes, filling a mold, and compacting on a vibration table for 1 minute to prepare a concrete test piece;
(4) and (3) standing at room temperature for 24 hours, demolding, and curing, wherein the curing condition is that the spraying moisture curing is carried out for 27 days at the room temperature. The strength of the concrete test piece meets the requirements of JTG _ D40-2019 highway cement concrete pavement design specifications and GB/T24493-2009 decorative concrete bricks on the strength of building materials.
Example 6
The reactive powder concrete of the embodiment is prepared from the following components in parts by mass: 1750 parts of industrial solid waste treatment material, 150 parts of gasified fine slag, 15 parts of desulfurized gypsum, 585 parts of cement, 20 parts of fiber, 38 parts of additive and 225 parts of water. The embodiment comprises the following steps:
(1) in the embodiment, the industrial solid waste treatment material is gasified coarse slag, the gasified slag is screened, and the treatment material with the particle size of 0.25-5mm is selected for standby;
(2) mixing the gasified coarse slag, the gasified fine slag, the cement and the desulfurized gypsum, performing dry mixing for 2 minutes, adding the steel fiber into the mixture, and performing dry mixing for 1-3 minutes to form a mixed dry material;
(3) uniformly mixing the additive and water, adding the mixture into the dry mixed material, continuously stirring for 2-6 minutes, filling a mold, and compacting on a vibration table for 1 minute to prepare a concrete test piece;
(4) and (3) standing at room temperature for 24 hours, demolding, and curing, wherein the curing condition is that the spraying moisture curing is carried out for 27 days at the room temperature. The concrete strength meets the requirements of JTG _ D40-2019 highway cement concrete pavement design specifications and JC/T446-2000 concrete pavement brick building material industry standards on the strength of building materials.
The properties of the concrete samples prepared in examples 1 to 6 were measured, and the results are shown in table 1 below.
TABLE 1
| Item | 28 days compressive strength (MPa) | 28 days rupture strength (MPa) |
| Example 1 | 120 | 11.3 |
| Example 2 | \ | 21.6 |
| Example 3 | \ | 30.2 |
| Example 4 | 95.3 | 15.4 |
| Example 5 | 76.5 | 12.4 |
| Example 6 | 32 | 6.4 |
As can be seen from table 1, the 28-day compressive strength, up to 120MPa, and the 28-day flexural strength, up to 30MPa, of the high-strength reactive powder concrete prepared in embodiments 1 to 6 of the present invention are not less than 30MPa, and meet the technical rules of application of JGJ/T281 and 2012 high-strength concrete, the test method of GBT2542-2012 wall bricks, the design specification of JTG _ D40-2019 road cement concrete pavement, the building standards of JC/T446-2000 concrete pavement bricks, the decorative concrete bricks of GB/T24493-2009, the design specification of JC899-2002 concrete curb stone, the design specification of JTG _ D40-2019 road cement concrete pavement, and the test method of GB/T35160-2017 synthetic stone, the test method of GB/T2012/T29059 ultrathin stone composite plate, The requirements of JG/T463-2014 artificial quartz stone slabs for building decoration, DB11/T968-2013 precast concrete component quality inspection standards, GB/T51231-2016 assembly type concrete building technical standards and DGJ32/TJ125-2011 precast assembly type integral shear wall structure system technical rules on the strength of building materials show that the active powder concrete prepared by the method can be used in the fields of various civil engineering building materials and decorative materials.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Any simple modification, change and equivalent changes of the above embodiments according to the technical essence of the invention are still within the protection scope of the technical solution of the invention.
Claims (8)
1. The method for preparing the reactive powder concrete by utilizing the massive coal mine industrial solid wastes is characterized by comprising the following components in parts by mass: 750 portions of industrial solid waste treatment material 1750 portions, 75 to 1382 portions of gasification fine slag, 8 to 53 portions of desulfurized gypsum, 75 to 1382 portions of cement, 10 to 40 portions of fiber, 6.6 to 26.4 portions of additive and 135 to 525 portions of water.
2. The method for preparing reactive powder concrete by using the bulk coal mine industrial solid waste according to claim 1, wherein the industrial solid waste treatment material can be one of coal gangue, gasified coarse slag, boiler slag and fly ash.
3. The method for preparing the reactive powder concrete by utilizing the bulk coal mine industrial solid waste according to claim 2, wherein the coal gangue is coarse coal gangue with the particle size of 0.25-5mm or fine coal gangue with the particle size of 0.075-0.25 mm. The grain size of the gasified coarse slag is 0.25-4.75 mm; the grain size of the boiler slag is 0.25-5 mm; the particle size of the dedusting ash is 0.75-0.2 mm.
4. The method for preparing the reactive powder concrete by utilizing the massive coal mine industrial solid waste according to claim 1, wherein the grain size of the gasified fine slag is 0.075-0.25 mm.
5. The method for preparing reactive powder concrete from the bulk coal mine industrial solid waste according to claim 1, wherein the desulfurized gypsum is common desulfurized gypsum powder.
6. The method for preparing reactive powder concrete from the bulk coal mine industrial solid waste according to claim 1, wherein the cement is selected from p.o42.5 portland cement or high-grade cement.
7. The method for preparing reactive powder concrete from the bulk coal mine industrial solid waste according to claim 1, wherein the fibers can be steel fibers, polypropylene fibers and anti-cracking fibers.
8. The method for preparing the reactive powder concrete by utilizing the massive coal mine industrial solid wastes according to claim 1, wherein the main components of the additive are polyvinyl alcohol monomethyl ether, methacrylic acid pre-esterification, methacrylic acid, sodium gluconate, dextrin, an air entraining agent, an antifoaming agent, sodium nitrate, inorganic salt, an alcohol amine reinforcing agent and a dispersing agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010892324.6A CN114105580A (en) | 2020-08-28 | 2020-08-28 | Method for preparing reactive powder concrete by utilizing bulk coal mine industrial solid wastes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010892324.6A CN114105580A (en) | 2020-08-28 | 2020-08-28 | Method for preparing reactive powder concrete by utilizing bulk coal mine industrial solid wastes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114105580A true CN114105580A (en) | 2022-03-01 |
Family
ID=80359775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010892324.6A Withdrawn CN114105580A (en) | 2020-08-28 | 2020-08-28 | Method for preparing reactive powder concrete by utilizing bulk coal mine industrial solid wastes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114105580A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113511868A (en) * | 2021-08-26 | 2021-10-19 | 西安科技大学 | Reactive powder concrete using massive coal mine industrial solid wastes and preparation method thereof |
| CN114835414A (en) * | 2022-03-31 | 2022-08-02 | 中国神华煤制油化工有限公司 | Portland cement clinker and preparation method thereof |
| CN115385617A (en) * | 2022-08-12 | 2022-11-25 | 金陵科技学院 | High-performance concrete and preparation method thereof |
| CN115504738A (en) * | 2022-09-22 | 2022-12-23 | 太原理工大学 | Pavement material of coal liquefaction residue based geopolymer emulsified asphalt mixture and preparation method thereof |
| CN116217199A (en) * | 2022-12-27 | 2023-06-06 | 昆明理工大学 | Roadway spray material based on gas slag, and preparation method and application thereof |
-
2020
- 2020-08-28 CN CN202010892324.6A patent/CN114105580A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113511868A (en) * | 2021-08-26 | 2021-10-19 | 西安科技大学 | Reactive powder concrete using massive coal mine industrial solid wastes and preparation method thereof |
| CN114835414A (en) * | 2022-03-31 | 2022-08-02 | 中国神华煤制油化工有限公司 | Portland cement clinker and preparation method thereof |
| CN115385617A (en) * | 2022-08-12 | 2022-11-25 | 金陵科技学院 | High-performance concrete and preparation method thereof |
| CN115504738A (en) * | 2022-09-22 | 2022-12-23 | 太原理工大学 | Pavement material of coal liquefaction residue based geopolymer emulsified asphalt mixture and preparation method thereof |
| CN116217199A (en) * | 2022-12-27 | 2023-06-06 | 昆明理工大学 | Roadway spray material based on gas slag, and preparation method and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114105580A (en) | Method for preparing reactive powder concrete by utilizing bulk coal mine industrial solid wastes | |
| CN100545124C (en) | A kind of building waste and industrial solid castoff recovery and utilization technology method | |
| CN101182141B (en) | Method for preparing high-strength structure material by using iron tailings | |
| CN113149530B (en) | Red mud modified foam light soil and preparation method and application thereof | |
| CN103159450B (en) | Production method of foamed concrete block manufactured from steel slag | |
| CN111205003B (en) | Preparation method of regenerated cementing material | |
| CN113511868A (en) | Reactive powder concrete using massive coal mine industrial solid wastes and preparation method thereof | |
| CN113336516A (en) | Cementing material prepared from multi-element solid wastes and cooperative regulation and control method thereof | |
| Lam | Recycling of AAC waste in the manufacture of autoclaved aerated concrete in Vietnam | |
| CN115215597A (en) | Shield slag slurry alkali-activated regenerated mortar and preparation method and application thereof | |
| CN112624683A (en) | Lightweight concrete | |
| CN109467370A (en) | A kind of high additive mixing ceramic tile aggregate C160UHPC and preparation method thereof | |
| CN113636802A (en) | Ultrahigh-performance concrete and preparation method thereof | |
| Liu et al. | Experimental Performance Measures of Recycled Insulation Concrete Blocks from Construction and Demolition Waste | |
| CN114853415B (en) | Method for preparing baking-free pressed brick by ball milling activated shield slurry and product thereof | |
| CN109503090A (en) | A kind of high additive hybrid glass powder C180UHPC and preparation method thereof | |
| CN112592147B (en) | Preparation and construction method of brick-concrete building waste residue regenerated road base inorganic mixture | |
| CN117209222A (en) | Preparation method of building 3D printing material | |
| CN104529309B (en) | A kind of non-bearing heat insulation building block and preparation method thereof | |
| CN112500115A (en) | Building thermal insulation mortar material taking gold tailings and oil sand tailings as raw materials and preparation method and application thereof | |
| CN109180060B (en) | Enhanced concrete expanding agent and preparation method thereof | |
| Bieliatynskyi et al. | Prospects for the use of ash and slag waste in the construction of Road Pavement | |
| CN109437776A (en) | A kind of high additive hybrid glass powder C190UHPC and preparation method thereof | |
| Aldikheeli et al. | Physical and mechanical characteristics of sustainable self-consolidating concrete incorporating high volume fly ash and cement kiln dust | |
| CN109437777A (en) | A kind of high additive mixing ceramic tile aggregate C150UHPC and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20220301 |