CN112250329A - Solid waste cementing material, full solid waste concrete and preparation method thereof - Google Patents
Solid waste cementing material, full solid waste concrete and preparation method thereof Download PDFInfo
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- CN112250329A CN112250329A CN202011153986.8A CN202011153986A CN112250329A CN 112250329 A CN112250329 A CN 112250329A CN 202011153986 A CN202011153986 A CN 202011153986A CN 112250329 A CN112250329 A CN 112250329A
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- solid waste
- cementing 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
- C04B7/00—Hydraulic cements
- C04B7/24—Cements from oil shales, residues or waste other than slag
- C04B7/243—Mixtures thereof with activators or composition-correcting additives, e.g. mixtures of fly ash and alkali 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
- C04B12/00—Cements not provided for in groups C04B7/00 - C04B11/00
- C04B12/005—Geopolymer cements, e.g. reaction products of aluminosilicates with alkali metal hydroxides or silicates
-
- 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
- C04B28/006—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 mineral polymers, e.g. geopolymers of the Davidovits type
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Treatment Of Sludge (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a solid waste cementing material, full solid waste concrete and a preparation method thereof. The solid waste cementing material comprises the following raw materials in parts by weight: 50-70 parts of converter steel slag micro powder, 10-20 parts of aluminum ash, 1-10 parts of red mud, 20-40 parts of carbide slag micro powder, 1-10 parts of refining slag micro powder, 5-20 parts of surfactant, 1-10 parts of diatomite, 20-30 parts of fly ash and 1-5 parts of phosphogypsum. The invention improves the gelling property and the structural stability of the solid waste cementing material by adjusting the raw material composition of the solid waste cementing material and combining the surfactant. The compressive strength of the full solid waste concrete prepared by the solid waste cementing material is 80-90 MPa.
Description
Technical Field
The invention relates to the technical field of solid waste cementing material processing, in particular to a solid waste cementing material, full solid waste concrete and a preparation method thereof.
Background
The solid waste cementing material is obtained by utilizing divalent metal oxide and hydroxide in the steel slag to cooperate with industrial byproduct gypsum to excite slag, fly ash, iron tailings and the like to form a gelatination property. The solid waste concrete prepared by utilizing the solid waste cementing material, the aggregate, the water reducing agent and other ingredients has good construction performance, volume stability and durability, and can be suitable for engineering construction.
At present, the utilization rate of solid wastes can be greatly improved by adopting raw materials such as slag, converter steel slag, iron tailings, waste rocks and the like to produce concrete, but the early strength of the produced concrete product, particularly the concrete product with large steel slag mixing amount, is lower than that of common cement concrete, and the setting time is overlong. These drawbacks limit the use of all solid waste concrete, and the addition of a suitable amount of refining slag as mineral admixture is effective in ameliorating these problems.
For example, Chinese patent No. CN201910654500.x discloses that refining slag and steel slag are combined to prepare a solid waste cementing material, so that the initial setting and final setting time of steel slag concrete is shortened. The refining slag is usually made of CaO and Al2O3，SiO2And MgO, the mineralogical phase of which is olivine (gamma-C)2S), mayenite (C)12A7) Tricalcium aluminate (C)3A) In that respect The refining slag has hydration property, can react with water to generate a hydration product similar to cement, and comprises a main component C12A7It reacts rapidly on contact with water, contributing to an increase in early strength. However, the strength of the all-solid waste concrete is relatively low, is lower than 60MPa, and is not suitable for some high-strength building construction environments.
Disclosure of Invention
Based on the problems, the invention aims to provide a solid waste cementing material and full solid waste concrete with high compressive strength prepared by using the same. The fly ash, the surfactant, the diatomite and other raw materials are added into the solid waste cementing material, so that the solid waste cementing material has excellent gelatinization, and the compressive strength of the full solid waste concrete processed by the solid waste cementing material is 80-90 MPa.
The invention relates to a solid waste cementing material which comprises the following raw materials in parts by weight:
50-70 parts of converter steel slag micro powder
10-20 parts of aluminum ash
1-10 parts of red mud
20-40 parts of carbide slag micro powder
1-10 parts of refining slag micro powder
5-20 parts of surfactant
1-10 parts of diatomite
20-30 parts of fly ash
1-5 parts of phosphogypsum.
Preferably, the particle size of the converter steel slag micro powder is 20-300 μm.
Preferably, the particle size of the carbide slag micro powder is 50-100 μm.
Preferably, the grain size of the refining slag micro powder is 1-10 nm.
Preferably, the surfactant is a cationic surfactant.
The invention also aims to provide the full solid waste concrete, which comprises the raw materials of the solid waste cementing material, the aggregate, the water reducing agent and the early strength agent.
Preferably, the all-solid waste concrete comprises the following raw materials in percentage by mass:
the sum of the above components is 100%.
Preferably, the aggregate is standard sand, and the water reducing agent is a lignosulfonate water reducing agent or a water-soluble resin sulfonate water reducing agent.
Preferably, the early strength agent is at least one of triethanolamine, calcium formate and urea.
The solid waste concrete is prepared by weighing raw materials in proportion and fully mixing the raw materials.
Compared with the prior art, the invention has the following beneficial effects: the invention improves the gelling property and the structural stability of the solid waste cementing material by adjusting the raw material composition of the solid waste cementing material and combining the surfactant. The compressive strength of the full solid waste concrete prepared by the solid waste cementing material is 80-90 MPa.
Detailed Description
The invention provides a solid waste cementing material which comprises the following raw materials in parts by weight:
50-70 parts of converter steel slag micro powder
10-20 parts of aluminum ash
1-10 parts of red mud
20-40 parts of carbide slag micro powder
1-10 parts of refining slag micro powder
5-20 parts of surfactant
1-10 parts of diatomite
20-30 parts of fly ash
1-5 parts of phosphogypsum.
The particle size of the converter steel slag micro powder adopted by the invention is 20-300 mu m, the particle size of the carbide slag micro powder is 50-100 mu m, and the particle size of the refining slag micro powder is 1-10 nm. The particle sizes of the three kinds of micro powder are strictly controlled, so that the constructed cementing material not only has stronger gelatinization, but also has a stable structure.
The surfactant employed in the present invention is a cationic surfactant, such as cetyl trimethyl ammonium bromide or dodecyl dimethyl benzyl ammonium chloride.
The invention also provides the full-solid waste concrete, and the raw materials of the full-solid waste concrete comprise the solid waste cementing material, the aggregate, the water reducing agent and the early strength agent.
The all-solid waste concrete is prepared by mixing the following raw materials in percentage by mass:
the sum of the above components is 100%.
The aggregate adopted by the invention is standard sand, the water reducing agent adopted is a lignosulfonate water reducing agent or a water-soluble resin sulfonate water reducing agent, and the early strength agent is at least one of triethanolamine, calcium formate and urea. The raw materials are conventional products adopted in the market.
The present invention will be further described with reference to the following specific examples.
Example 1
The full-solid waste concrete is prepared by mixing the following raw materials in percentage by mass:
wherein the aggregate is standard sand, the water reducing agent is lignosulfonate water reducing agent, and the early strength agent is triethanolamine.
The solid waste cementing material is prepared from the following raw materials in parts by weight:
60 parts of converter steel slag micro powder with the particle size of 30 mu m, 10 parts of aluminum ash, 10 parts of red mud, 30 parts of carbide slag micro powder with the particle size of 100 mu m, 5 parts of refining slag micro powder with the particle size of 5nm, 5 parts of hexadecyl trimethyl ammonium bromide, 5 parts of diatomite, 25 parts of fly ash and 5 parts of phosphogypsum.
Example 2
The full-solid waste concrete is prepared by mixing the following raw materials in percentage by mass:
wherein the aggregate is standard sand, the water reducing agent is water-soluble resin sulfonate water reducing agent, and the early strength agent is formed by mixing calcium formate and urea according to the mass ratio of 1: 1.
The solid waste cementing material is prepared from the following raw materials in parts by weight:
70 parts of converter steel slag micro powder with the particle size of 100 mu m, 10 parts of aluminum ash, 5 parts of red mud, 25 parts of carbide slag micro powder with the particle size of 50 mu m, 10 parts of refining slag micro powder with the particle size of 5nm, 15 parts of dodecyl dimethyl benzyl ammonium chloride, 3 parts of diatomite, 27 parts of fly ash and 2 parts of phosphogypsum.
Example 3
The full-solid waste concrete is prepared by mixing the following raw materials in percentage by mass:
wherein the aggregate is standard sand, the water reducing agent is lignosulfonate water reducing agent, and the early strength agent is prepared by mixing triethanolamine, calcium formate and urea according to the mass ratio of 3:1: 1.
The solid waste cementing material is prepared from the following raw materials in parts by weight:
55 parts of converter steel slag micro powder with the particle size of 200 mu m, 20 parts of aluminum ash, 10 parts of red mud, 30 parts of carbide slag micro powder with the particle size of 80 mu m, 7 parts of refining slag micro powder with the particle size of 3nm, 20 parts of hexadecyl trimethyl ammonium bromide, 1 part of diatomite, 23 parts of fly ash and 1 part of phosphogypsum.
Example 4
The full-solid waste concrete is prepared by mixing the following raw materials in percentage by mass:
wherein the aggregate is standard sand, the water reducing agent is water-soluble resin sulfonate water reducing agent, and the early strength agent is formed by mixing triethanolamine and calcium formate according to the mass ratio of 1: 2.
The solid waste cementing material is prepared from the following raw materials in parts by weight:
70 parts of converter steel slag micro powder with the particle size of 50 mu m, 20 parts of aluminum ash, 6 parts of red mud, 14 parts of carbide slag micro powder with the particle size of 50 mu m, 7 parts of refining slag micro powder with the particle size of 1nm, 18 parts of hexadecyl trimethyl ammonium bromide, 9 parts of diatomite, 21 parts of fly ash and 4 parts of phosphogypsum.
Example 5
The full-solid waste concrete is prepared by mixing the following raw materials in percentage by mass:
wherein the aggregate is standard sand, the water reducing agent is water-soluble resin sulfonate water reducing agent, and the early strength agent is formed by mixing triethanolamine and urea according to the mass ratio of 2: 1.
The solid waste cementing material is prepared from the following raw materials in parts by weight:
60 parts of converter steel slag micro powder with the particle size of 300 mu m, 15 parts of aluminum ash, 1 part of red mud, 30 parts of carbide slag micro powder with the particle size of 50 mu m, 1 part of refining slag micro powder with the particle size of 5nm, 5 parts of dodecyl dimethyl benzyl ammonium chloride, 1 part of diatomite, 20 parts of fly ash and 5 parts of phosphogypsum.
Comparative example 1
Cetyl trimethyl ammonium bromide in example 3 is omitted, and a solid waste gelled material is prepared, which is composed of the following raw materials in parts by weight:
55 parts of converter steel slag micro powder with the particle size of 200 mu m, 20 parts of aluminum ash, 10 parts of red mud, 30 parts of carbide slag micro powder with the particle size of 80 mu m, 7 parts of refining slag micro powder with the particle size of 3nm, 1 part of diatomite, 23 parts of fly ash and 1 part of phosphogypsum.
The solid waste cementing material is used for preparing the full solid waste concrete according to the raw material proportion of the embodiment 3.
Comparative examples 2 to 4
The particle sizes of the converter steel slag micro powder, the carbide slag micro powder and the refining slag micro powder in example 3 were adjusted, and the solid waste gelled material was prepared with the remaining compositions unchanged, as shown in table 1.
TABLE 1
| Furnace steel slag micro-powder particle size | Carbide slag micro-powder particle size | Particle size of refining slag micro powder | |
| Comparative example 2 | 500μm | 80μm | 3μm |
| Comparative example 3 | 200μm | 10μm | 3μm |
| Comparative example 4 | 200μm | 80μm | 100μm |
The concrete raw materials of examples 1 to 5 and comparative examples 1 to 4 were homogenized in a blender and processed into cement mortar test blocks having dimensions of 40mm x 160mm at room temperature. The test block was maintained in a constant temperature and humidity chamber at 20 ℃ and 95% humidity for 10 days, 20 days, 30 days, 40 days, and 50 days, and its compressive strength was recorded as shown in Table 2.
TABLE 2
| Compressive strength of 10 days | Compressive strength of 30 days | Compressive strength of 50 days | |
| Example 1 | 45.6MPa | 63.5MPa | 84.1MPa |
| Example 2 | 43.2MPa | 61.6MPa | 86.5MPa |
| Example 3 | 53.4MPa | 77.1MPa | 90.0MPa |
| Example 4 | 46.3MPa | 62.0MPa | 81.4MPa |
| Example 5 | 44.8MPa | 65.3MPa | 83.2MPa |
| Comparative example 1 | 27.9MPa | 41.3MPa | 45.7MPa |
| Comparative example 2 | 26.4MPa | 47.8MPa | 49.3MPa |
| Comparative example 3 | 25.9MPa | 47.3MPa | 48.5MPa |
| Comparative example 4 | 26.0MPa | 48.8MPa | 49.0MPa |
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (10)
1. The solid waste cementing material is characterized by comprising the following raw materials in parts by weight:
50-70 parts of converter steel slag micro powder
10-20 parts of aluminum ash
1-10 parts of red mud
20-40 parts of carbide slag micro powder
1-10 parts of refining slag micro powder
5-20 parts of surfactant
1-10 parts of diatomite
20-30 parts of fly ash
1-5 parts of phosphogypsum.
2. The solid waste cementing material of claim 1, wherein the particle size of the converter steel slag micro powder is 20-300 μm.
3. The solid waste cementing material of claim 1, wherein the particle size of the carbide slag micro powder is 50-100 μm.
4. The solid waste cementing material of claim 1, wherein the grain size of the refining slag micro powder is 1-10 nm.
5. The solid waste cement as claimed in claim 1, wherein the surfactant is a cationic surfactant.
6. The solid waste concrete is characterized by comprising the solid waste cementing material, the aggregate, the water reducing agent and the early strength agent according to any one of claims 1 to 5.
7. The solid waste concrete of claim 6, comprising the following raw materials in percentage by mass:
the sum of the above components is 100%.
8. The all-solid waste concrete according to claim 6, wherein the aggregate is standard sand, and the water reducing agent is a lignosulfonate water reducing agent or a water-soluble resin sulfonate water reducing agent.
9. The waste concrete of claim 8, wherein the early strength agent is at least one of triethanolamine, calcium formate, and urea.
10. The method for preparing the solid waste concrete according to claim 6, wherein the raw materials are weighed in proportion and then fully mixed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011153986.8A CN112250329A (en) | 2020-10-26 | 2020-10-26 | Solid waste cementing material, full solid waste concrete and preparation method thereof |
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| CN202011153986.8A CN112250329A (en) | 2020-10-26 | 2020-10-26 | Solid waste cementing material, full solid waste concrete and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114477805A (en) * | 2021-12-20 | 2022-05-13 | 广东华欣环保科技有限公司 | Early-strength steel slag cementing material |
| CN114940600A (en) * | 2022-06-16 | 2022-08-26 | 山东理工大学 | Full-solid waste filling material and preparation method thereof |
| CN115028403A (en) * | 2022-05-10 | 2022-09-09 | 山东鲁碧建材有限公司 | Green solid waste base glue solid powder gel material and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114477805A (en) * | 2021-12-20 | 2022-05-13 | 广东华欣环保科技有限公司 | Early-strength steel slag cementing material |
| CN114477805B (en) * | 2021-12-20 | 2023-01-06 | 广东华欣环保科技有限公司 | Early-strength steel slag cementing material |
| CN115028403A (en) * | 2022-05-10 | 2022-09-09 | 山东鲁碧建材有限公司 | Green solid waste base glue solid powder gel material and preparation method thereof |
| CN114940600A (en) * | 2022-06-16 | 2022-08-26 | 山东理工大学 | Full-solid waste filling material and preparation method thereof |
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