CN113754331A - Red mud-based cementing material and preparation method and application thereof - Google Patents

Red mud-based cementing material and preparation method and application thereof Download PDF

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Publication number
CN113754331A
CN113754331A CN202111170543.4A CN202111170543A CN113754331A CN 113754331 A CN113754331 A CN 113754331A CN 202111170543 A CN202111170543 A CN 202111170543A CN 113754331 A CN113754331 A CN 113754331A
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China
Prior art keywords
red mud
parts
cementing material
fly ash
sodium silicate
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CN202111170543.4A
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Chinese (zh)
Inventor
吴思
张惠勤
汲平
高国华
黄秀粉
刘宪明
杨光磊
王业飞
韩沛
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Shandong Hi Speed Engineering Inspection and Testing Co Ltd
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Shandong Hi Speed Engineering Inspection and Testing Co Ltd
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Priority to CN202111170543.4A priority Critical patent/CN113754331A/en
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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
    • 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
    • C04B7/00—Hydraulic cements
    • C04B7/24—Cements from oil shales, residues or waste other than slag
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B7/00—Hydraulic cements
    • C04B7/24—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
    • 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)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Road Paving Structures (AREA)

Abstract

The invention belongs to the technical field of comprehensive utilization of solid waste materials, and particularly relates to a red mud-based cementing material, and a preparation method and application thereof, wherein the red mud-based cementing material comprises the following components: red mud, fly ash, mineral powder, quicklime and sodium silicate. The red mud-based cementing material has good physical and mechanical properties, has the conditions of being applied to road bed treatment and broken stone base layer stabilization, can consume a large amount of solid waste materials such as red mud when being applied to pavement base layer filling, can reduce the requirements of engineering construction on raw materials such as cement, lime and the like, greatly reduces the engineering cost, and has important social and economic benefits in road engineering.

Description

Red mud-based cementing material and preparation method and application thereof
Technical Field
The invention belongs to the technical field of comprehensive utilization of solid waste materials, and particularly relates to a red mud-based cementing material, and a preparation method and application thereof.
Background
Along with the rapid development of roads in China, the demand of road building raw materials is increasing, and the exploitation of broken stones and the production of cement cause serious damage to ecology and pollution to the environment. At present, the semi-rigid (bottom) base layer material of the asphalt pavement in China is mainly cement stabilized macadam, and the road bed improvement is mostly cement soil or lime soil. The production of lime and cement can generate a large amount of carbon dioxide, which causes serious pollution to air and harms human health. At present, in order to protect the environment, stone plants and sand plants in a plurality of regions are completely closed, so that the shortage of materials required by road construction is caused, the quality of raw materials is difficult to guarantee, and great quality hidden troubles are generated for projects.
The historical stockpiling quantity and the new increment of industrial solid wastes such as red mud, tailings and the like are large, great pressure is caused on the environment, and the utilization task is very difficult. The red mud is industrial solid waste discharged during the extraction of alumina, and the red mud discharged by China as a large alumina producing country is up to millions of tons each year. With the increasing stock quantity of the red mud and the increasing pollution to the environment, the resource utilization of the red mud to the maximum extent is reluctant.
If solid waste materials such as red mud can be successfully applied to road bed improvement and road base course, a large amount of solid waste materials such as red mud can be consumed, and the requirements of engineering construction on raw materials such as cement and lime can be reduced, so that the application of the red mud-based cementing material in road engineering is promoted, and important social and economic benefits are achieved.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a red mud-based cementing material and a preparation method and application thereof.
One of the purposes of the invention is to disclose a red mud-based cementing material, which comprises the following components: red mud, fly ash, mineral powder, quicklime and sodium silicate.
Preferably, the red mud-based cementing material comprises the following components in parts by weight: 40-50 parts of red mud, 35-45 parts of mineral powder, 2-5 parts of quick lime, 5-10 parts of fly ash and 3-5 parts of sodium silicate.
Preferably, the red mud-based cementing material comprises the following components in parts by weight: 45 parts of red mud, 45 parts of mineral powder, 2 parts of quicklime, 5 parts of fly ash and 3 parts of sodium silicate.
Preferably, the red mud is Bayer process red mud, the pH value of the red mud is 11.5-12.5, and the density of the red mud is 3.45 g/cm3The specific surface area of the red mud is 370 m2The stability of the red mud is 0.5 mm.
Preferably, the bayer process red mud mainly comprises the following components in percentage by mass: 15-20% SiO2，17-23% Al2O3，40-50% Fe2O3，3-5% CaO，10-20% Na2O，4-10% TiO2。
The invention also discloses a preparation method of the red mud-based cementing material, which comprises the following steps:
the method comprises the following steps: drying and grinding red mud, mineral powder, fly ash, quicklime and sodium silicate;
step two: weighing the components in proportion;
step three: and adding the weighed components in no sequence, stirring, and bagging the stirred material to obtain the red mud-based cementing material.
The invention also discloses the application of the red mud-based cementing material in the aspect of road base.
The invention particularly discloses an inorganic binder stabilizing material for a road base, which mainly comprises the red mud-based cementing material, broken stone and water.
Preferably, the crushed stone is 20-30 mm, 10-20 mm, 5-10 mm and 0-5 mm stone powder.
Preferably, the water is engineering mixing water.
Advantageous effects
The invention discloses a red mud-based cementing material which is mainly prepared from solid waste materials such as red mud, fly ash and the like, has good physical and mechanical properties, and has the conditions of being applied to road bed treatment and stabilizing a macadam foundation. The red mud-based cementing material is applied to road surface base course filling, not only can consume a large amount of solid waste materials such as red mud, but also can reduce the requirements of engineering construction on raw materials such as cement, lime and the like, greatly reduces the engineering cost, and has important social and economic benefits in road engineering.
The invention tests the physical properties of the red mud-based cementing materials with different formulas, and the retardation time and the strength of the red mud-based cementing materials have potential conditions for using a road base layer or a subbase layer. The invention utilizes the preferred embodiment to carry out pavement performance research, determines the optimal water content and the maximum dry density through compaction tests, and prepares the stable material unconfined compression-resistant test piece on the basis of the optimal water content and the maximum dry density, and the result shows that the red mud-based gelled material stable macadam prepared by the invention has good physical and mechanical properties and conditions for applying to a stable macadam foundation.
Detailed Description
Hereinafter, the present invention will be described in detail. Before the description is made, it should be understood that the terms used in the present specification and the appended claims should not be construed as limited to general and dictionary meanings, but interpreted based on the meanings and concepts corresponding to technical aspects of the present invention on the basis of the principle that the inventor is allowed to define terms appropriately for the best explanation. Accordingly, the description proposed herein is just a preferable example for the purpose of illustrations only, not intended to limit the scope of the invention, so it should be understood that other equivalents and modifications could be made thereto without departing from the spirit and scope of the invention.
The following examples are given by way of illustration of embodiments of the invention and are not to be construed as limiting the invention, and it will be understood by those skilled in the art that modifications may be made without departing from the spirit and scope of the invention. Unless otherwise specified, reagents and equipment used in the following examples are commercially available products.
The red mud used in the following examples is bayer process red mud, with the following properties: the pH value is 11.5-12.5, and the density is 3.45 g/cm3Specific surface area of 370 m2Per kg, the stability is 0.5 mm.
The red mud used in the following examples has the following main chemical components: 16.2% SiO2，19.3% Al2O3，42.5% Fe2O3，4.4% CaO，12.1% Na2O，4.9% TiO2。
The remaining raw materials in the following examples are illustrated as follows:
mineral powder: the used mineral powder is limestone mineral powder, the hydrophilic coefficient is 0.6, and the plasticity index is 3.0%.
Quick lime: the quicklime used is grade I calcareous quicklime, the content of calcium oxide is 88.4 percent, and the content of magnesium oxide is 4.4 percent.
Fly ash: the fly ash is I-grade fly ash and SiO2、Al2O3And Fe2O3The total content is 74.6 percent, and the ignition loss is 6.2 percent.
Sodium silicate: the sodium silicate used is industrial solid sodium silicate, and the soluble solid is not less than 98.5 wt%.
Example 1
The composition of the red mud-based cementing material described in this example is shown in table 1 below.
TABLE 1 Red mud-based cementitious Material formulation of example 1
Figure 280194DEST_PATH_IMAGE001
The preparation method of the red mud-based cementing material comprises the following steps:
the method comprises the following steps: drying and grinding red mud, mineral powder, fly ash, quicklime and sodium silicate;
step two: weighing the components in proportion;
step three: and adding the weighed components in no sequence, stirring, and bagging the stirred material to obtain the red mud-based cementing material.
Example 2
The composition of the red mud-based cementing material described in this example is shown in table 2 below.
TABLE 2 proportioning of red mud-based cementitious materials of example 2
Figure 360145DEST_PATH_IMAGE002
Example 3
The composition of the red mud-based cementing material described in this example is shown in table 3 below.
TABLE 3 Red mud-based cementitious Material formulation of example 3
Figure 448187DEST_PATH_IMAGE003
Example 4
The composition of the red mud-based cementing material in this example is shown in table 4 below.
TABLE 4 Red mud-based cementitious Material formulation of example 4
Figure 983729DEST_PATH_IMAGE004
Example 5
The composition of the red mud-based cementing material described in this example is shown in table 5 below.
TABLE 5 Red mud-based cementitious Material formulation of example 5
Figure 448208DEST_PATH_IMAGE005
Comparative example 1
The cementitious material described in this comparative example was a set retarding portland P.O 32.5.5 cement.
Comparative example 2
The cementitious material described in this comparative example was a set retarding silicate P.O 42.5.5 cement.
Experimental example 1-testing of physical Properties of Red mud-based Cement
The gelled materials described in examples 1-5 and comparative examples 1-2 were prepared into mortar test pieces for performance testing. The test is carried out according to the test specification of highway engineering cement and cement concrete (JTG 3420-.
The molding mortar test piece in the strength test piece has a mortar-to-mortar ratio of 1:3 and a water-cement ratio of 1:2, and the strength test is carried out by an electric compression-resistant and bending-resistant integrated machine. The specific test results are shown in table 6.
TABLE 6 physical Properties of Red mud-based cementitious Material test results
Figure 648246DEST_PATH_IMAGE006
As can be seen from the data in table 6, the strength of the red mud-based cementing material of the present invention is not as good as the compressive and flexural strength of 425 cement, but the strength comparison with 325 cement is not very different, and the retardation time of the red mud-based cementing material of example 4 can meet the time requirement of road transportation, and has potential conditions for using road base course or sub-base course.
On the basis of the above, the red mud-based cementitious material of the preferred embodiment 4 of the present invention is subjected to mix design of the road-base red mud-based cementitious material stabilized macadam to prepare the inorganic binder stabilizing material.
The application of the red mud-based cementitious material of example 4 to stabilized macadam base is shown in examples 6-10 below.
Example 6
The inorganic binder stabilizing material mainly comprises a red mud-based cementing material, crushed stone and water, wherein the content of the red mud-based cementing material is 4%.
The crushed stone is 20-30 mm, 10-20 mm, 5-10 mm and 0-5 mm stone powder.
The water is used for engineering mixing.
Example 7
The inorganic binder stabilizing material mainly comprises a red mud-based cementing material, crushed stone and water, wherein the content of the red mud-based cementing material is 5%.
The crushed stone is 20-30 mm, 10-20 mm, 5-10 mm and 0-5 mm stone powder.
The water is used for engineering mixing.
Example 8
The inorganic binder stabilizing material mainly comprises a red mud-based cementing material, crushed stone and water, wherein the mixing amount of the red mud-based cementing material is 6%.
The crushed stone is 20-30 mm, 10-20 mm, 5-10 mm and 0-5 mm stone powder.
The water is used for engineering mixing.
Example 9
The inorganic binder stabilizing material mainly comprises a red mud-based cementing material, crushed stone and water, wherein the content of the red mud-based cementing material is 7%.
The crushed stone is 20-30 mm, 10-20 mm, 5-10 mm and 0-5 mm stone powder.
The water is used for engineering mixing.
Example 10
The inorganic binder stabilizing material mainly comprises a red mud-based cementing material, crushed stone and water, wherein the content of the red mud-based cementing material is 8%.
The crushed stone is 20-30 mm, 10-20 mm, 5-10 mm and 0-5 mm stone powder.
The water is used for engineering mixing.
Experimental example 2-Performance test of Red mud-based cementitious Material for road use
The test is carried out according to the test regulation of inorganic binder stabilizing materials for highway engineering (JTG E51-2009), the inorganic binder stabilizing materials described in examples 6-10 are subjected to compaction test to determine the optimal water content and the maximum dry density, and based on the optimal water content and the maximum dry density, the unconfined compression test piece of the inorganic binder stabilizing materials is prepared according to the 98% compaction degree, and the standard curing method is adopted for curing. The results of the experiment are shown in Table 7.
TABLE 7 road performance at different red mud-based cementitious material loadings
Figure 907189DEST_PATH_IMAGE007
As can be found from Table 7, the stabilized macadam with the red mud-based cementing material prepared by the invention has good physical and mechanical properties and has the condition of being applied to a stabilized macadam foundation. If the red mud is applied on a large scale, a large amount of solid waste materials such as red mud can be consumed, the requirements of engineering construction on raw materials such as cement and lime can be reduced, the engineering cost is greatly reduced, and the red mud and lime composite material has important social and economic benefits.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims (10)

1. The red mud-based cementing material is characterized by comprising the following components: red mud, mineral powder, quicklime, fly ash and sodium silicate.
2. The red mud-based cementitious material of claim 1, comprising the following components in parts by weight: 40-50 parts of red mud, 35-45 parts of mineral powder, 2-5 parts of quick lime, 5-10 parts of fly ash and 3-5 parts of sodium silicate.
3. The red mud-based cementing material of claim 2, which is characterized by comprising the following components in parts by weight: 45 parts of red mud, 45 parts of mineral powder, 2 parts of quicklime, 5 parts of fly ash and 3 parts of sodium silicate.
4. The red mud of claim 1The base cementing material is characterized in that the pH value of the red mud is 11.5-12.5, and the density of the red mud is 3.45 g/cm3The specific surface area of the red mud is 370 m2The red mud has the stability of 0.5 mm; the red mud mainly comprises the following components in parts by weight: SiO 22 15-20 parts of Al2O3 17-23 parts of Fe2O3 40-50 parts of CaO, 3-5 parts of Na210-20 parts of O and TiO2 4-10 parts.
5. The red mud-based cementing material of claim 1, wherein the mineral powder is limestone mineral powder, the hydrophilic coefficient is 0.6, and the plasticity index is 3.0%; the quick lime is I-grade calcareous quick lime, and the content of calcium oxide is 88.4 percent, and the content of magnesium oxide is 4.4 percent.
6. The red mud-based cementitious material of claim 1, wherein the fly ash is class I fly ash, and SiO in the fly ash2、Al2O3And Fe2O3The total content is 74.6 percent, and the ignition loss is 6.2 percent; the sodium silicate is industrial solid sodium silicate, and the soluble solid of the sodium silicate is not less than 98.5 wt%.
7. The method for preparing the red mud-based cementing material of any one of the claims 1 to 6, which is characterized by comprising the following steps:
the method comprises the following steps: drying and grinding red mud, mineral powder, fly ash, quicklime and sodium silicate;
step two: weighing the components in proportion;
step three: and adding the weighed components in no sequence, stirring, and bagging the stirred material to obtain the red mud-based cementing material.
8. Use of the red mud-based cementitious material according to any one of claims 1 to 6 for road base.
9. The use according to claim 8, characterized in that the red mud-based cementitious material is used for the preparation of inorganic binder stabilizing materials for road base, which mainly comprise the above-mentioned red mud-based cementitious material, crushed stone and water.
10. Use according to claim 9, wherein the crushed stone is 20-30 mm, 10-20 mm, 5-10 mm crushed stone and 0-5 mm stone powder; the water is used for engineering mixing.
CN202111170543.4A 2021-10-08 2021-10-08 Red mud-based cementing material and preparation method and application thereof Pending CN113754331A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114620960A (en) * 2022-04-26 2022-06-14 洛阳君江建材科技有限公司 Method for preparing building material from red mud
CN114702294A (en) * 2022-04-02 2022-07-05 山东高速工程检测有限公司 Solid waste based super-retarding cementing material and preparation method and application thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108046678A (en) * 2018-02-05 2018-05-18 开封大学 A kind of concrete that micro-crack selfreparing is carried out using industrial residue and preparation method thereof
CN109020461A (en) * 2018-09-03 2018-12-18 山西云泉岩土工程科技股份有限公司 A kind of red mud sill for roadbed steady layer of water
CN110845168A (en) * 2019-12-10 2020-02-28 徐州中联混凝土有限公司 Active admixture, preparation method and application of active admixture and concrete
CN110922081A (en) * 2019-12-10 2020-03-27 徐州中联混凝土有限公司 Treating agent for red mud, Bayer process red mud treatment method, concrete and building material
CN111995269A (en) * 2020-08-06 2020-11-27 广东同创科鑫环保有限公司 Red mud-based cementing material and preparation method and application thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108046678A (en) * 2018-02-05 2018-05-18 开封大学 A kind of concrete that micro-crack selfreparing is carried out using industrial residue and preparation method thereof
CN109020461A (en) * 2018-09-03 2018-12-18 山西云泉岩土工程科技股份有限公司 A kind of red mud sill for roadbed steady layer of water
CN110845168A (en) * 2019-12-10 2020-02-28 徐州中联混凝土有限公司 Active admixture, preparation method and application of active admixture and concrete
CN110922081A (en) * 2019-12-10 2020-03-27 徐州中联混凝土有限公司 Treating agent for red mud, Bayer process red mud treatment method, concrete and building material
CN111995269A (en) * 2020-08-06 2020-11-27 广东同创科鑫环保有限公司 Red mud-based cementing material and preparation method and application thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
姚立阳: "《赤泥沥青与沥青混合料路用性能及黏弹特性》", 30 September 2017, 中国建材工业出版社 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114702294A (en) * 2022-04-02 2022-07-05 山东高速工程检测有限公司 Solid waste based super-retarding cementing material and preparation method and application thereof
CN114702294B (en) * 2022-04-02 2022-12-20 山东高速工程检测有限公司 Solid waste based super-retarding cementing material and preparation method and application thereof
CN114620960A (en) * 2022-04-26 2022-06-14 洛阳君江建材科技有限公司 Method for preparing building material from red mud

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