CN101250035B - Swelling material for cement or concrete and preparation thereof - Google Patents
Swelling material for cement or concrete and preparation thereof Download PDFInfo
- Publication number
- CN101250035B CN101250035B CN200810017767XA CN200810017767A CN101250035B CN 101250035 B CN101250035 B CN 101250035B CN 200810017767X A CN200810017767X A CN 200810017767XA CN 200810017767 A CN200810017767 A CN 200810017767A CN 101250035 B CN101250035 B CN 101250035B
- Authority
- CN
- China
- Prior art keywords
- cement
- swelling agent
- gypsum
- concrete
- magnesium slag
- 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.)
- Active
Links
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
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses an expansion agent for cement or concrete, the weight percentages of the components contents of the expansion agent are that magnesium slag takes 70-95%, gypsum takes 5-15%, fly ash takes 0-20%, and additive agent takes 0-5%. The expansion agent is produced by industrial residue and the magnesium slag, which solves the problem that the magnesium slag is accumulated in quantities. The expansion agent has relatively high limited expansion rate, high compression strength and high breaking strength. The invention discloses a process for preparing the expansion agent, the magnesium slag, the gypsum, the fly ash and the additive agent are mixed and grinded in proportion, wherein the magnesium slag contains CaO and MgO and the content is larger than 50%, specific surface area achieves 300-600m2/kg, and the expansion agent is prepared without calcining by the process.
Description
Technical field
The present invention relates to a kind of cement or cement expansive material field.The present invention can be used for engineering fields such as cementation process, water-proof concrete, mass concrete, road concrete, expansive concrete and expansive concrete.The invention still further relates to the preparation method of this swelling agent.
Background technology
The widespread use of MAGNESIUM METAL on automotive industry, precision optical machinery industry, structured material, electrochemical industry and space technology.In recent years, the magnesium industry fast development has also produced a large amount of industrial residues simultaneously.1 ton of MAGNESIUM METAL of every production is discharged the magnesium slag about 9 tons approximately.At present, nearly 1,000,000 tons of the annual emissions of China's magnesium slag, and along with the development of refining magnesium industry, its quantity discharged will increase year by year.
To the utilization of magnesium slag, the present good way of none.Though aspect a lot of trial has been arranged, the research that the magnesium slag utilizes is also very immature, and the bulk deposition of magnesium slag still is not resolved.
The main component of magnesium slag is CaO and MgO, and CaO and water can react and generate Ca (OH)
2, volume increases 97.92%, and MgO and water can react and generate Mg (OH)
2, volume increases more than 94%.And utilize CaO and MgO report all to be arranged both at home and abroad for the material produce of main component is used for concrete swelling agent, therefore utilize the production of magnesium slag to be used for cement and concrete swelling agent is feasible.
The function that is used for the swelling agent of cement or cement concrete is to make the concrete after the sclerosis produce certain volumetric expansion, reduces the early stage shrinkage crack that produces of cement or cement concrete sclerosis.It is generally acknowledged that sulphur aluminum compound, what magnesium oxide of calcium oxide all can be used as the chemical constitution of cement or cement expansive material.According to the chemical ingredients difference, it is swelling agent and composite expanding agent that swelling agent can be divided into sulplo-aluminate type swelling agent, lime swelling agent, magnesium oxide type swelling agent, iron powder.
What application was maximum at present is to be the sulplo-aluminate type swelling agent of main material production with alunite and gypsum, and calcium oxide type and the research of magnesium oxide type swelling agent are less, is mostly to use calcination of minerals to make.And utilize magnesium slag direct production not see relevant report as swelling agent, this method has promptly been saved the energy, has reduced cost, has utilized industrial residue again, is beneficial to environmental protection.
Summary of the invention
The technical problem to be solved in the present invention is: a kind of cement or concrete swelling agent of being used for is provided, this swelling agent utilizes industrial residue magnesium slag direct production gained, solved the problem of the bulk deposition of magnesium slag, this swelling agent has bigger limited expansion rate, higher compression and folding strength.
For solving the problems of the technologies described above, the present invention is achieved in that its component content weight percent is: magnesium slag 70～95%, gypsum 5～15%, flyash 0～20%, additive 0～5%.
Described magnesium dreg chemistry composition comprises MgO, CaO and SiO at least
2
MgO and CaO in the described magnesium dreg chemistry composition
2The content that closes greater than 50%.
Described gypsum is selected anhydrite or dihydrate gypsum or industrial gypsum for use
Described gypsum composition comprises CaSO at least
4
Described flyash is selected one-level or second class powered coal ash for use.
Described additive is selected sodium sulfate or calcium chloride for use.
The mixture powder ground specific surface area of described magnesium slag, gypsum, flyash, additive is 300～600m
2/ kg.
Swelling agent of the present invention adding proportion in the quality of cement in concrete is 8～15%.
Another technical problem that the present invention will solve is: the above-mentioned preparation method who is used for cement or concrete swelling agent is provided, need calcine when this method prepares swelling agent.
For solving the problems of the technologies described above, the present invention is achieved in that and will contains CaO and the MgO content magnesium slag greater than 50%, is mixed in proportion levigately with gypsum, flyash and additive, and specific surface area reaches 300～600m
2/ kg.
The invention has the beneficial effects as follows: cement expansive material main raw material of the present invention is the waste residue of industry refining magnesium, and its main component is CaO and MgO, generates the swelling property product with the water effect, thereby plays expansion.Compare with the calcining production technique of conventional expanded agent, utilize the commercial magnesium slag to be raw material, because these magnesium slags are to form under about 1200 ℃ the high temperature when smelting magnesium, therefore do not need to calcine once more, so promptly saved the energy, it is low to have reduced production cost, utilized industrial residue again, turn waste into wealth, saved, reduced magnesium slag pollution on the environment owing to the magnesium slag muck is put a large amount of soils that take.
Embodiment
Select the meet the requirements magnesium slag of (CaO+MgO content is greater than 50%) of mineralogical composition, be mixed in proportion levigately with gypsum, flyash and additive, specific surface area reaches 300～600m
2/ kg gets final product.The adding proportion of this swelling agent in concrete is 8～15% (in the quality of cement).
Embodiment 1
Take by weighing magnesium slag (CaO+MgO content is 59%) 82g, dihydrate gypsum 10g, second class powered coal ash 5g, sodium sulfate 3g mixes levigate (specific surface area 300～600m
2/ kg) make the cement concrete swelling agent, detect according to national standard, volume is 10% o'clock of cement quality, and 7 days limited expansion rates of maintenance are 0.19% in the water, and 28 days limited expansion rates of maintenance are 0.07% in the water, 21 days limited expansion rates of maintenance are 0.074% in the air, 7 days ultimate compression strength 33.7MPa, 28 days ultimate compression strength 48.5MPa, 7 days folding strength 8.3MPa, 28 days folding strength 9.2MPa meet " cement expansive material " JC476-2001 standard-required.
Embodiment 2
Take by weighing magnesium slag (CaO+MgO content is 65%) 90g, dihydrate gypsum 10g mixes levigate (specific surface area 300～600m
2/ kg) make the cement concrete swelling agent, detect according to national standard, volume is 12% o'clock of cement quality, and 7 days limited expansion rates of maintenance are 0.11% in the water, and 28 days limited expansion rates of maintenance are 0.06% in the water, 21 days limited expansion rates of maintenance are 0.015% in the air, 7 days ultimate compression strength 33.6MPa, 28 days ultimate compression strength 45.4MPa, 7 days folding strength 7.8MPa, 28 days folding strength 8.1MPa meet " cement expansive material " JC476-2001 standard-required.
Embodiment 3
Take by weighing magnesium slag (CaO+MgO content is 57%) 75g, dihydrate gypsum 15g, second class powered coal ash 7g, sodium sulfate 3g mixes levigate (specific surface area 300～600m
2/ kg) make the cement concrete swelling agent, detect according to national standard, volume is 10% o'clock of cement quality, and 7 days limited expansion rates of maintenance are 0.09% in the water, and 28 days limited expansion rates of maintenance are 0.01% in the water, 21 days limited expansion rates of maintenance are 0.004% in the air, 7 days ultimate compression strength 31.2MPa, 28 days ultimate compression strength 45.7MPa, 7 days folding strength 6.7MPa, 28 days folding strength 7.6MPa meet " cement expansive material " JC476-2001 standard-required.
Embodiment 4
Take by weighing magnesium slag (CaO+MgO content is 62%) 86g, dehydrated gyp-6g, second class powered coal ash 5g, calcium chloride 3g mixes levigate (specific surface area 300～600m
2/ kg) make the cement concrete swelling agent, detect according to national standard, volume is 10% o'clock of cement quality, and 7 days limited expansion rates of maintenance are 0.15% in the water, and 28 days limited expansion rates of maintenance are 0.02% in the water, 21 days limited expansion rates of maintenance are 0.030% in the air, 7 days ultimate compression strength 36.7MPa, 28 days ultimate compression strength 46.7MPa, 7 days folding strength 8.2MPa, 28 days folding strength 8.4MPa meet " cement expansive material " JC476-2001 standard-required.
Claims (6)
1. one kind is used for cement or concrete swelling agent, it is characterized in that: its component content weight percent is: magnesium slag 70～95%, gypsum 5～15%, flyash 0～20%, additive 0～5%; Described magnesium dreg chemistry composition comprises MgO, CaO and SiO at least
2The content of MgO and CaO sum is greater than 50% in the described magnesium dreg chemistry composition; Described additive is selected sodium sulfate or calcium chloride for use.
2. a kind of cement or concrete swelling agent of being used for according to claim 1, it is characterized in that: described gypsum is selected anhydrite or dihydrate gypsum or industrial gypsum for use
3. a kind of cement or concrete swelling agent of being used for according to claim 1, it is characterized in that: described gypsum composition comprises CaSO at least
4
4. a kind of cement or concrete swelling agent of being used for according to claim 1, it is characterized in that: described flyash is selected one-level or second class powered coal ash for use.
5. the application of each described swelling agent of claim 1 to 7 is characterized in that: described swelling agent adding proportion in the quality of cement in concrete is 8～15%.
6. the preparation method of the described swelling agent of claim 1 is characterized in that: will contain CaO and MgO content greater than 50% magnesium slag, and be mixed in proportion levigately with gypsum, flyash and additive, specific surface area reaches 300～600m
2/ kg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810017767XA CN101250035B (en) | 2008-03-21 | 2008-03-21 | Swelling material for cement or concrete and preparation thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810017767XA CN101250035B (en) | 2008-03-21 | 2008-03-21 | Swelling material for cement or concrete and preparation thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101250035A CN101250035A (en) | 2008-08-27 |
| CN101250035B true CN101250035B (en) | 2010-06-09 |
Family
ID=39953655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810017767XA Active CN101250035B (en) | 2008-03-21 | 2008-03-21 | Swelling material for cement or concrete and preparation thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101250035B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101973724A (en) * | 2010-09-15 | 2011-02-16 | 山西科腾环保科技有限公司 | Expander |
| CN102173676A (en) * | 2011-03-17 | 2011-09-07 | 浙江五龙化工股份有限公司 | Contraction-free cement grout material |
| CN102219424B (en) * | 2011-04-02 | 2012-11-28 | 洛阳理工学院 | Method for preparing CSA (calcium sulfoaluminate) concrete expansion agent by utilizing petroleum coke desulfurization ash |
| CN102815883B (en) * | 2012-08-29 | 2014-12-17 | 河南铝城聚能实业有限公司 | Fiber composite capillary-crystalline expanding agent and preparation method thereof |
| CN103011655B (en) * | 2012-12-11 | 2014-09-10 | 中建三局建设工程股份有限公司 | High-strength concrete composite expanding agent for steel tube and preparation method thereof |
| CN104478275B (en) * | 2014-11-18 | 2017-01-18 | 天津市金盛源特种建材有限公司 | Waterproof anti-cracking agent for concrete |
| CN104671687A (en) * | 2015-01-23 | 2015-06-03 | 湖州丰盛新材料有限公司 | Concrete expansive agent and preparation method thereof |
| CN104692697A (en) * | 2015-03-12 | 2015-06-10 | 唐孟菲 | Expansion agent for concrete |
| CN104692698A (en) * | 2015-03-12 | 2015-06-10 | 唐孟菲 | Expansion agent for concrete |
| CN106116200B (en) * | 2016-06-27 | 2018-11-27 | 盐城工学院 | Nickel dreg concrete swelling agent, preparation process and concrete |
| CN108751764B (en) * | 2018-07-24 | 2021-01-05 | 海南胜凯建材有限公司 | Modified calcium oxide expanding agent for compensating shrinkage concrete and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1772690A (en) * | 2005-09-22 | 2006-05-17 | 武汉理工大学 | Expansion designable high strength steel pipe concrete and its prepn |
-
2008
- 2008-03-21 CN CN200810017767XA patent/CN101250035B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1772690A (en) * | 2005-09-22 | 2006-05-17 | 武汉理工大学 | Expansion designable high strength steel pipe concrete and its prepn |
Non-Patent Citations (5)
| Title |
|---|
| 朱洪波 |
| 朱洪波 董容珍 马保国等.利用多种工业废渣制备新型水泥混凝土膨胀剂.新型建筑材料 1.2005,(1),19-21. * |
| 等.利用多种工业废渣制备新型水泥混凝土膨胀剂.新型建筑材料 1.2005,(1),19-21. |
| 董容珍 |
| 马保国 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101250035A (en) | 2008-08-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101250035B (en) | Swelling material for cement or concrete and preparation thereof | |
| CN104071997B (en) | Comprehensive utilization red mud, ardealite and the method for gangue | |
| CN104987117B (en) | Environment protection architecture heat-barrier material | |
| CN101367629B (en) | Manufacture of sulphur aluminate cements with electrolytic manganesium residue and method of manufacturing the same | |
| CN102826771B (en) | Coal gangue activator, and novel clinker-free cementing material and preparation method thereof | |
| CN105565691A (en) | Lead-zinc smelting slag based geopolymer gelling material and preparation method thereof | |
| CN108358581A (en) | A kind of concrete and preparation method thereof containing refining slag | |
| CN101948254A (en) | Method for preparing electrolytic manganese slag ecological cement | |
| CN103553482B (en) | Inorganic composite gel material being exclusively used in coal mine filling and preparation method thereof | |
| CN103435281A (en) | Cement clinker and preparation process thereof | |
| CN101684675B (en) | Autoclaved phosphogypsum brick and method for preparing same | |
| CN105198336A (en) | Seashore building cement resisting strong wind and big waves | |
| CN101885589A (en) | Compound sulfate cement | |
| CN107324679A (en) | A kind of steel ground-slag early activity accelerator and its preparation method and application | |
| CN105669072A (en) | High performance concrete composite admixture produced by high silicon iron tailings | |
| CN104016603B (en) | The preparation method of industrial residue formula mixed mineral powder | |
| CN108218269B (en) | Nickel iron slag cementing material and preparation process thereof | |
| CN103319123A (en) | Fly ash-based cemented filling material and preparation method thereof | |
| CN109912243A (en) | A kind of cement produced using Industrial Solid Waste | |
| CN102910888A (en) | Mixed material for filling mine roadway | |
| CN1258653A (en) | Composite portland cement | |
| CN100478299C (en) | Cement reinforcing agent | |
| CN107586092B (en) | Sylvite mineral filling material capable of being remotely pumped and preparation method thereof | |
| CN104250083B (en) | A kind of metallurgical slag air entrained concrete and processing technology and application | |
| CN103332875B (en) | A kind of industry by-product gypsum base composite gelled material and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200515 Address after: 713701 Wangqiao Town, Jingyang County, Xianyang City, Shaanxi Province Patentee after: Jidong Heidelberg (Jingyang) Cement Co., Ltd Address before: 710055 Shaanxi province Xi'an Yanta Road No. 13 Patentee before: XI'AN UNIVERSITY OF ARCHITECTURE & TECHNOLOGY |
|
| TR01 | Transfer of patent right |