CN111635206A - Impervious and carbonization-resistant solid waste concrete and preparation method thereof - Google Patents
Impervious and carbonization-resistant solid waste concrete and preparation method thereof Download PDFInfo
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- CN111635206A CN111635206A CN202010511212.1A CN202010511212A CN111635206A CN 111635206 A CN111635206 A CN 111635206A CN 202010511212 A CN202010511212 A CN 202010511212A CN 111635206 A CN111635206 A CN 111635206A
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- parts
- water
- carbonization
- impervious
- solid waste
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Classifications
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/003—Methods for mixing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/0007—Pretreatment of the ingredients, e.g. by heating, sorting, grading, drying, disintegrating; Preventing generation of dust
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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
- C04B2111/00017—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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
Abstract
An impervious and carbonization-resistant solid waste concrete and a preparation method thereof belong to the technical field of building materials, and the concrete is composed of the following raw materials in parts by weight: 13 parts of 42.5-grade ordinary portland cement, 3.5 parts of phosphorous slag powder, 3.5 parts of slag, 0.5 part of externally-doped silica fume, 1.6 parts of desulfurized gypsum, 9 parts of machine-made sand, 21 parts of natural sand, 25-30 parts of natural rock, 10-15 parts of steel slag aggregate, 12-14 parts of coal gangue raw material and 0.1 part of water reducer. The invention makes full use of various solid wastes, and makes the concrete prepared by utilizing the solid wastes have the anti-seepage and anti-carbonization performances by adding the water reducing agent and other activators, changing the water-cement ratio or reducing the water-cement ratio and the like, thereby not only utilizing the solid wastes, but also producing the high-performance concrete and having good enterprise benefits.
Description
Technical Field
The invention belongs to the technical field of building material preparation, and particularly relates to impervious and carbonization-resistant solid waste concrete and a preparation method thereof.
Background
In recent years, China makes great progress in mining, metal smelting, coal power generation and chemical production, but simultaneously discharges a large amount of industrial waste residues. If industrial waste residues are not utilized, a large amount of industrial waste residues are accumulated, so that not only is land resources occupied, but also air pollution, soil pollution and water resource pollution are caused, and how to utilize the industrial waste residues becomes a problem to be solved.
With the exhaustion of natural resources, the state gradually starts to limit the exploitation of river sand for ensuring the ecological environment, and part of provinces and cities completely forbid the exploitation. At present, the natural sand resources which can be exploited and utilized are less and less, the natural sand resources are not enough to supply the requirements of downstream enterprises, and how to utilize the tailing sand to replace partial natural sand to produce concrete and ensure the quality of the concrete becomes a problem to be solved.
The coal gangue is solid waste discharged in the coal mining process and the coal washing process. Meanwhile, coal gangue is one of industrial solid wastes with the largest discharge amount in China, 70 hundred million tons of coal gangue are accumulated at present, not only land is occupied, but also environment and ecology are seriously damaged, and the problem to be solved is how to effectively mix the coal gangue into concrete for recycling.
Disclosure of Invention
In order to solve the technical problems, the invention provides impervious and carbonization-resistant solid waste concrete and a preparation method thereof, and mainly aims to develop concrete which can comprehensively utilize various solid wastes, can replace part of cement, can replace part of fine aggregate and coarse aggregate, and has good seepage-resistant and carbonization-resistant performances.
The technical scheme adopted by the invention is as follows:
the impervious and carbonization-resistant solid waste concrete is prepared from the following raw materials in parts by weight: 13 parts of 42.5-grade ordinary portland cement, 3.5 parts of phosphorous slag powder, 3.5 parts of slag, 0.5 part of externally-doped silica fume, 1.6 parts of desulfurized gypsum, 9 parts of machine-made sand, 21 parts of natural sand, 25-30 parts of natural rock, 10-15 parts of steel slag aggregate, 12-14 parts of coal gangue raw material and 0.1 part of water reducer.
Further, the water reducing agent is a polycarboxylic acid high-performance water reducing agent.
The preparation method of the impervious and carbonization resistant solid waste concrete comprises the following preparation methods:
the method comprises the following steps: grinding the portland cement, the phosphorous slag powder, the slag, the silica fume and the desulfurized gypsum together;
step two: crushing natural rock and steel slag aggregate by a crusher and screening by a vibrating screen, taking aggregate crushed stone with the granularity diameter of 5-25mm and continuous gradation for standby application, simultaneously crushing and screening coal gangue raw materials independently, calcining the crushed coal gangue aggregate at 700 ℃, taking calcined dry coal gangue as pre-wetting treatment, and adding water with the mass of 0.7 multiplied by the mass of the dried coal gangue multiplied by the water absorption rate of the dried coal gangue;
step three: and (3) feeding the raw materials prepared in the first step and the second step, natural sand and machine-made sand into a stirrer together for stirring, mixing and stirring the water reducing agent and water to prepare a mixed solution, pouring the mixed solution into the stirrer for not less than 2min until the slurry is uniform and full, and curing to obtain the concrete.
Further, the specific surface area of the ground material in the first step is 275-445 m2/kg。
Further, the water reducing agent is a polycarboxylic acid high-performance water reducing agent, and the silica fume is used as an activator of the phosphorus slag powder.
Further, the water-glue ratio is controlled to be 0.37, and the water-cement ratio is controlled to be 0.5.
Further, the grinding proportion of the desulfurized gypsum to the Portland cement and the admixture is 5: 95.
compared with the prior art, the invention has the following advantages and effects:
1) if the industrial waste residue is not utilized, a large amount of accumulated waste residue not only occupies land resources, but also causes great pollution to the environment.
2) According to the anti-permeability and anti-carbonization solid waste concrete and the preparation method thereof, solid wastes with different degrees are doped in the cementing material, the fine aggregate and the coarse aggregate of the concrete, so that the solid wastes replace part of raw materials, and meanwhile, the concrete has good performance.
3) The invention relates to impervious and carbonization-resistant solid waste concrete and a preparation method thereof, wherein phosphorus slag powder and slag are adjusted in proportion, so that the concrete has good chlorine ion penetration resistance when the water-cement ratio of the phosphorus slag powder to the slag is about 0.37, and the concrete has good carbonization resistance by modifying, configuring and adjusting the proportion of coal gangue.
Detailed Description
The present invention will be described in detail with reference to examples.
Example 1
The invention relates to a impervious and carbonization resistant solid waste concrete, which comprises the following components: the composition is characterized by comprising the following raw materials in parts by weight: 13 parts of 42.5-grade ordinary portland cement, 3.5 parts of phosphorous slag powder, 3.5 parts of slag, 0.5 part of externally-doped silica fume, 1.6 parts of desulfurized gypsum, 9 parts of machine-made sand, 21 parts of natural sand, 25-30 parts of natural rock, 10-15 parts of steel slag aggregate, 12-14 parts of coal gangue raw material and 0.1 part of water reducer.
The preparation method of the concrete comprises the following steps:
the method comprises the following steps: grinding the portland cement, the phosphorus slag powder, the slag, the silica fume and the desulfurized gypsum together, and controlling the specific surface area to be 275-445 m after grinding2/kg。
Step two: crushing natural rock and steel slag aggregate by a crusher and screening by a vibrating screen, taking continuous graded aggregate crushed stone with the granularity diameter of 5-25mm for standby, simultaneously crushing and screening the coal gangue raw material independently, and calcining the crushed coal gangue aggregate at 700 ℃ to completely decompose kaolin in the coal gangue raw material to generate active SiO2And AL2O3And taking the calcined dry coal gangue for pre-wetting treatment, and adding water with the mass (the water absorption of the coal gangue after drying by the coal gangue mass × after drying by 0.7 ×).
Step three: and (3) feeding the raw materials prepared in the first step and the second step, natural sand and machine-made sand into a stirrer together for stirring, mixing and stirring the water reducing agent and water to prepare a mixed solution, pouring the mixed solution into the stirrer for not less than 2min until the slurry is uniform and full, and curing to obtain the concrete.
The water reducing agent is a polycarboxylic acid high-performance water reducing agent, and the silica fume is an activator of the phosphorous slag.
The phosphorus slag powder has a delayed coagulation effect, but the coagulation time of the concrete can be controlled within a normal range by adding the silica fume to excite the activity of solid wastes.
Wherein, the concrete water-cement ratio of this embodiment is: 0.37-0.39, the water-cement ratio is: 0.5 to 0.55. The impermeability grade reaches P8-P12.
Claims (7)
1. The impervious and carbonization-resistant solid waste concrete is characterized in that: the composition is characterized by comprising the following raw materials in parts by weight: 13 parts of 42.5-grade ordinary portland cement, 3.5 parts of phosphorous slag powder, 3.5 parts of slag, 0.5 part of externally-doped silica fume, 1.6 parts of desulfurized gypsum, 9 parts of machine-made sand, 21 parts of natural sand, 25-30 parts of natural rock, 10-15 parts of steel slag aggregate, 12-14 parts of coal gangue raw material and 0.1 part of water reducer.
2. The impervious and carbonization resistant solid waste concrete of claim 1, wherein: the water reducing agent is a polycarboxylic acid high-performance water reducing agent.
3. A method of preparing the impervious and carbonation resistant solid waste concrete of claim 1, wherein: the preparation method comprises the following steps:
the method comprises the following steps: grinding the portland cement, the phosphorous slag powder, the slag, the silica fume and the desulfurized gypsum together;
step two: crushing natural rock and steel slag aggregate by a crusher and screening by a vibrating screen, taking aggregate crushed stone with the granularity diameter of 5-25mm and continuous gradation for standby application, simultaneously crushing and screening coal gangue raw materials independently, calcining the crushed coal gangue aggregate at 700 ℃, taking calcined dry coal gangue as pre-wetting treatment, and adding water with the mass of 0.7 multiplied by the mass of the dried coal gangue multiplied by the water absorption rate of the dried coal gangue;
step three: and (3) feeding the raw materials prepared in the first step and the second step, natural sand and machine-made sand into a stirrer together for stirring, mixing and stirring the water reducing agent and water to prepare a mixed solution, pouring the mixed solution into the stirrer for not less than 2min until the slurry is uniform and full, and curing to obtain the concrete.
4. The method for preparing impervious and carbonization resistant solid waste concrete as claimed in claim 3, wherein: the specific surface area after grinding in the first step is 275-445 m2/kg。
5. The method for preparing impervious and carbonization resistant solid waste concrete as claimed in claim 3, wherein: the water reducing agent is a polycarboxylic acid high-performance water reducing agent, and the silica fume is used as an activator of the phosphorus slag powder.
6. The method for preparing impervious and carbonization resistant solid waste concrete as claimed in claim 3, wherein: the water-glue ratio is controlled to be 0.37, and the water-cement ratio is controlled to be 0.5.
7. The method for preparing impervious and carbonization resistant solid waste concrete as claimed in claim 3, wherein: the grinding proportion of the desulfurized gypsum to the Portland cement to the admixture is 5: 95.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010511212.1A CN111635206A (en) | 2020-06-08 | 2020-06-08 | Impervious and carbonization-resistant solid waste concrete and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010511212.1A CN111635206A (en) | 2020-06-08 | 2020-06-08 | Impervious and carbonization-resistant solid waste concrete and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN111635206A true CN111635206A (en) | 2020-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010511212.1A Pending CN111635206A (en) | 2020-06-08 | 2020-06-08 | Impervious and carbonization-resistant solid waste concrete and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114735980A (en) * | 2022-04-25 | 2022-07-12 | 中建西部建设西南有限公司 | Plastic concrete and preparation method thereof |
| CN115745560A (en) * | 2022-11-29 | 2023-03-07 | 泰安市晓然园林市政工程有限公司 | Preparation method for making artificial marble by using coal gangue and steel slag as aggregate |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101439952A (en) * | 2008-12-22 | 2009-05-27 | 朝阳华龙企业集团有限公司 | Coal gangue concrete and preparation thereof |
| CN102491718A (en) * | 2011-11-24 | 2012-06-13 | 上海宝田新型建材有限公司 | Concrete prepared from industrial solid waste materials |
| CN103524093A (en) * | 2013-08-22 | 2014-01-22 | 厦门天润锦龙建材有限公司 | Ultrahigh strength concrete |
-
2020
- 2020-06-08 CN CN202010511212.1A patent/CN111635206A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101439952A (en) * | 2008-12-22 | 2009-05-27 | 朝阳华龙企业集团有限公司 | Coal gangue concrete and preparation thereof |
| CN102491718A (en) * | 2011-11-24 | 2012-06-13 | 上海宝田新型建材有限公司 | Concrete prepared from industrial solid waste materials |
| CN103524093A (en) * | 2013-08-22 | 2014-01-22 | 厦门天润锦龙建材有限公司 | Ultrahigh strength concrete |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114735980A (en) * | 2022-04-25 | 2022-07-12 | 中建西部建设西南有限公司 | Plastic concrete and preparation method thereof |
| CN115745560A (en) * | 2022-11-29 | 2023-03-07 | 泰安市晓然园林市政工程有限公司 | Preparation method for making artificial marble by using coal gangue and steel slag as aggregate |
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Application publication date: 20200908 |
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