CN112500102A - Multi-element solid waste soil curing agent - Google Patents
Multi-element solid waste soil curing agent Download PDFInfo
- Publication number
- CN112500102A CN112500102A CN202011345402.7A CN202011345402A CN112500102A CN 112500102 A CN112500102 A CN 112500102A CN 202011345402 A CN202011345402 A CN 202011345402A CN 112500102 A CN112500102 A CN 112500102A
- Authority
- CN
- China
- Prior art keywords
- solid waste
- curing agent
- soil curing
- element solid
- waste soil
- 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.)
- Pending
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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
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00732—Uses not provided for elsewhere in C04B2111/00 for soil stabilisation
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The invention discloses a multi-element solid waste soil curing agent, which is prepared from the following raw materials: red mud, fly ash, desulfurized gypsum, lime and ordinary portland cement; the invention has high solid waste mixing amount: in the preparation raw materials, the solid waste has high mixing amount and large slag consumption, reduces the accumulation cost of the solid waste and the influence on the environment, and has high strength: the prepared soil stabilized by the multi-element solid waste soil curing agent has 7d unconfined compressive strength of more than 4.2MPa and the highest compressive strength of 8.1MPa, and meets the requirement that the accumulated standard axis in national relevant regulations exceeds 12 multiplied by 106The required compression resistance requirement of the highway subgrade partially meets the requirement of the required compression resistance of the highway of the main running heavy-duty vehicle. The compressive strength of the prepared multi-element solid waste soil curing agent mortar exceeds 20MPa in 28d, and can reach more than 35MPa at most. Compared with the traditional cement curing agent, the cost is saved by over 40 percent. The preparation machine has low use difficulty.
Description
Technical Field
The invention relates to a soil curing agent, and belongs to the field of building materials.
Background
The solid waste is called as 'valuable resource of misplaced space', and under the condition that high-quality resources are increasingly exhausted, the pressure of resource exhaustion can be effectively relieved by reasonably utilizing the solid waste through research, and meanwhile, the environmental problem caused by stacking of the solid waste is fundamentally solved. Solid wastes such as red mud, fly ash, desulfurized gypsum and the like are paid attention to and reasonably utilized, but the stacking stock is still large. The application practice of solid wastes such as red mud, fly ash, desulfurized gypsum and the like at home and abroad shows that the application problem of the solid wastes is difficult to completely solve by a single utilization mode, and the problem can be solved only by a resource mode which is cross-industrial and multi-path.
The soil stabilizer is a novel energy-saving and environment-friendly engineering material which is synthesized by various inorganic and organic materials and used for curing various soils. For the soil to be reinforced, according to the physical and chemical properties of the soil, only a certain amount of curing agent needs to be added, and the required performance index can be achieved through uniform stirring and compaction treatment.
At present, no report exists for preparing the soil stabilizer by adopting large-amount solid waste.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a multi-element solid waste soil curing agent.
The technical scheme of the invention is summarized as follows:
a multi-element solid waste soil curing agent is prepared from the following raw materials in parts by weight: 20-60% of red mud, 20-60% of fly ash, 5-15% of desulfurized gypsum, 5-10% of lime and 5-20% of ordinary portland cement.
A preparation method of a multi-element solid waste soil curing agent comprises the following steps: weighing the following raw materials in parts by weight: 20-60% of red mud, 20-60% of fly ash, 5-15% of desulfurized gypsum, 5-10% of lime and 5-20% of ordinary portland cement; ball milling is carried out in a ball mill, and the multi-element solid waste soil curing agent is obtained after passing through a 0.15mm sieve.
Wherein the red mud, the fly ash and the desulfurized gypsum are solid wastes.
The invention has the advantages that:
(1) high solid waste mixing amount: the prepared multi-element solid waste soil curing agent has the advantages of 75-85% of solid waste dosage, high mixing amount and large slag consumption, and belongs to high-solid waste engineering materials. Reduces the stacking cost of the solid waste and the influence on the environment,
(2) high strength: the prepared soil stabilized by the multi-element solid waste soil curing agent has 7d unconfined compressive strength of more than 4.2MPa and the maximum unconfined compressive strength of more than 8.1MPa, and all meets the requirement that the accumulative standard axis in national relevant regulations exceeds 12 multiplied by 106The required compression resistance requirement (4MPa) of the highway subgrade partially meets the requirement (5MPa) of the required compression resistance of the highway of the main driving heavy-duty vehicle. The compressive strength of the prepared multi-element solid waste soil curing agent mortar exceeds 20MPa in 28d, and can reach more than 35MPa at most.
(3) The economic value is as follows: the price of the solid waste in the prepared multi-element solid waste soil curing agent can be ignored, and compared with the traditional cement curing agent, the cost can be saved by more than 40% under the same strength.
(4) The process is simple: the prepared multi-element solid waste soil curing agent is simple in use machinery and low in mechanical use difficulty.
Detailed Description
The Portland cement used in the present invention is preferably Portland cement 42.5.
The red mud, the fly ash and the desulfurized gypsum are solid wastes.
By mass:
the red mud mainly comprises 20-30% of alumina, 15-40% of calcium oxide, 15-30% of silicon oxide and 5-15% of ferric oxide.
The chemical components of the fly ash mainly comprise 30-60% of silicon oxide, 15-30% of aluminum oxide and 0-10% of calcium oxide.
The chemical components of the desulfurized gypsum mainly comprise 30-50% of calcium oxide and 40-50% of sulfur trioxide.
Various solid wastes selected from the above range can be used in the present invention.
In addition:
the lime mainly comprises 90-95% of calcium oxide.
The present invention will be further illustrated by the following specific examples.
A preparation method of a multi-element solid waste soil curing agent comprises the following steps:
weighing the following raw materials in parts by weight: red mud, fly ash, desulfurized gypsum, lime and ordinary portland cement; the mixture was ball-milled in a ball mill and passed through a 0.15mm sieve to obtain a multi-component solid waste soil stabilizer (the composition of the raw materials of each example is shown in Table 1).
And (3) carrying out a mortar strength detection method (ISO method) test on the multi-element solid waste soil curing agent, and detecting the compressive strength and the flexural strength of the multi-element solid waste soil curing agent.
And (3) carrying out 7d age unconfined compressive strength test on the multi-element solid waste soil curing agent, and detecting the unconfined compressive strength of the multi-element solid waste soil curing agent with the soil content of 10% after the multi-element solid waste soil curing agent is used for curing the soil.
And (3) performing a mortar strength test (ISO method) on the multi-element solid waste soil curing agent, and detecting the compressive strength and the flexural strength of the multi-element solid waste soil curing agent. The experimental results are shown in table 1:
TABLE 1
The mass contents of the solid wastes used in examples 1 to 8 were determined:
the chemical components of the red mud comprise 24.5 percent of alumina, 19.4 percent of calcium oxide, 19.6 percent of silicon oxide and 9.6 percent of ferric oxide.
The chemical components of the fly ash comprise 43.2 percent of silicon oxide, 18.3 percent of aluminum oxide and 9.6 percent of calcium oxide.
The components of the desulfurized gypsum comprise 32.8 percent of calcium oxide and 44.6 percent of sulfur trioxide.
In addition:
92% of calcium oxide of lime.
Weighing 10% of multi-element solid waste soil curing agent and 90% of soil according to mass, adding water according to the proportion of 13% of water-solid ratio, mixing and preparing a sample, and carrying out 7d age unconfined compressive strength test on the cured soil. The experimental results are shown in Table 2:
TABLE 2
The solid waste selected from the following ranges can be used in the present invention.
The red mud mainly comprises 20-30% of alumina, 15-40% of calcium oxide, 15-30% of silicon oxide and 5-15% of ferric oxide.
The chemical components of the fly ash mainly comprise 30-60% of silicon oxide, 15-30% of aluminum oxide and 0-10% of calcium oxide.
The chemical components of the desulfurized gypsum mainly comprise 30-50% of calcium oxide and 40-50% of sulfur trioxide.
Claims (2)
1. A multi-element solid waste soil curing agent is characterized by being prepared from the following raw materials in parts by weight: 20-60% of red mud, 20-60% of fly ash, 5-15% of desulfurized gypsum, 5-10% of lime and 5-20% of ordinary portland cement.
2. A preparation method of a multi-element solid waste soil curing agent is characterized by comprising the following steps: weighing the following raw materials in parts by weight: 20-60% of red mud, 20-60% of fly ash, 5-15% of desulfurized gypsum, 5-10% of lime and 5-20% of ordinary portland cement; ball milling is carried out in a ball mill, and the multi-element solid waste soil curing agent is obtained after passing through a 0.15mm sieve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011345402.7A CN112500102A (en) | 2020-11-26 | 2020-11-26 | Multi-element solid waste soil curing agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011345402.7A CN112500102A (en) | 2020-11-26 | 2020-11-26 | Multi-element solid waste soil curing agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112500102A true CN112500102A (en) | 2021-03-16 |
Family
ID=74966146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011345402.7A Pending CN112500102A (en) | 2020-11-26 | 2020-11-26 | Multi-element solid waste soil curing agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112500102A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113307535A (en) * | 2021-06-18 | 2021-08-27 | 江苏建筑职业技术学院 | Soil curing agent |
| CN113354310A (en) * | 2021-06-02 | 2021-09-07 | 东南大学 | Single-component geopolymer curing agent based on multi-component solid wastes and preparation method thereof |
| CN115093188A (en) * | 2022-06-22 | 2022-09-23 | 湖北路城建设科技有限公司 | Composite soil curing agent for permeable pavement base and application thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101792668A (en) * | 2010-01-21 | 2010-08-04 | 新乡市公路管理局 | Highway base course solidifying agent and method for solidifying highway base course by using same |
| KR20150066275A (en) * | 2013-12-06 | 2015-06-16 | 주식회사 씨엠디기술단 | Soil solidified agent |
| CN106433652A (en) * | 2016-10-17 | 2017-02-22 | 安徽理工大学 | Curing agent for remediation of lead-contaminated soil, preparation method of curing agent and application of curing agent |
| CN111875325A (en) * | 2020-08-12 | 2020-11-03 | 太原理工大学 | Curing agent for kaolin polluted by copper ions and sample preparation method |
-
2020
- 2020-11-26 CN CN202011345402.7A patent/CN112500102A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101792668A (en) * | 2010-01-21 | 2010-08-04 | 新乡市公路管理局 | Highway base course solidifying agent and method for solidifying highway base course by using same |
| KR20150066275A (en) * | 2013-12-06 | 2015-06-16 | 주식회사 씨엠디기술단 | Soil solidified agent |
| CN106433652A (en) * | 2016-10-17 | 2017-02-22 | 安徽理工大学 | Curing agent for remediation of lead-contaminated soil, preparation method of curing agent and application of curing agent |
| CN111875325A (en) * | 2020-08-12 | 2020-11-03 | 太原理工大学 | Curing agent for kaolin polluted by copper ions and sample preparation method |
Non-Patent Citations (1)
| Title |
|---|
| 王兢等: "几种工业固体废弃物对土壤的固化作用", 《金属矿山》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113354310A (en) * | 2021-06-02 | 2021-09-07 | 东南大学 | Single-component geopolymer curing agent based on multi-component solid wastes and preparation method thereof |
| CN113307535A (en) * | 2021-06-18 | 2021-08-27 | 江苏建筑职业技术学院 | Soil curing agent |
| CN115093188A (en) * | 2022-06-22 | 2022-09-23 | 湖北路城建设科技有限公司 | Composite soil curing agent for permeable pavement base and application thereof |
| CN115093188B (en) * | 2022-06-22 | 2024-03-22 | 湖北路城建设科技有限公司 | Composite soil curing agent for permeable pavement base layer and application |
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Application publication date: 20210316 |
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