CN108059377A - A kind of C4A3The phosphoaluminate clinker of $ types - Google Patents
A kind of C4A3The phosphoaluminate clinker of $ types Download PDFInfo
- Publication number
- CN108059377A CN108059377A CN201711417311.8A CN201711417311A CN108059377A CN 108059377 A CN108059377 A CN 108059377A CN 201711417311 A CN201711417311 A CN 201711417311A CN 108059377 A CN108059377 A CN 108059377A
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- China
- Prior art keywords
- phosphoaluminate
- clinker
- types
- calcium
- clinkers
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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
- C04B12/02—Phosphate cements
- C04B12/025—Phosphates of ammonium or of the alkali or alkaline earth metals
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of C4A3The phosphoaluminate clinker of $ types, raw material chemical composition weight percent are：35 50%CaO, 20 40%Al2O3, 10 20%P2O5, 2 3%SO3, 1.5 3%Fe2O3；The C4A3The firing temperature of $ type phosphoaluminate clinkers is 1350 DEG C~1400 DEG C, burns till rear kiln discharge, is formed through rapid cooling.The present invention is fundamentally avoided without CA mineral due to its hydrated product phase transformation (CAH10Or C2AH8Mutually become C3AH6) the next destruction of cause cement volume shrinkage band；Compared with drated calcium aluminate, the C that contains in new clinker system4A3$ aquations form entringite and assign the clinker more prominent early mechanics characteristics, are a kind of C that can be applied to ocean engineering4A3$ type phosphoaluminate clinkers.
Description
Technical field
The present invention relates to a kind of cement materials, and in particular to a kind of C4A3The phosphoaluminate clinker of $ types.
Background technology
Marine environment is complicated and changeable, containing with SO4 2-、Cl-、Mg2+For the chemical attack that the erosion carbon dioxide of representative is brought,
The physical factors such as tide, hurricane, ice slush, ocean current, beach evolution, alluvion and Sediment Transport are all to the durability of concrete
It causes to seriously affect, the extra large work engineering service life is greatly shortened, therefore cement used in ocean engineering is except needing to meet unskilled labor
Outside the demands such as intensity, workability required by journey is good, it should also be taken into account that have certain impermeability, frost resistance, it is corrosion-resistant,
Resist the performances such as ice slush shock.With the Large scale construction of China ocean offshore engineering, the durability for improving concrete has weight
Want meaning.
At present, existing cement type cannot all well adapt to the application conditions of extra large work engineering, using portland cement as
The cement for construction in sea of matrix is slower with early hydration speed, and intensity is low, and a large amount of Ca (OH) are contained in hydrated product2, anti-Cl-With
SO4 2-Permeance property is poor, and the later stage is susceptible to shrinkage cracking, and impervious and corrosion resistance has seriously affected cement durability.For
The various shortcoming of reply portland cement, China done numerous studies on aluminium sulfate modified portland cement at present.Specially
Profit, in a kind of method (CN1513791A) that portland cement is modified, using Portland clinker as base-material, with aluminium sulfate water
Mud is modifying agent, then is subject to directly mixture after gypsum makees conditioning agent and forms.Using more also more effective way is in silicate
Cement somehow sintering process in introduce aluminium sulfate ore deposit phase, such as a kind of high-performance Alite-sulphoaluminate of patent somehow after
The technique method (CN101134647A) and the Portland clinker of the mineral containing dead plaster burnt till and its into production method
(CN1490270) etc..Above method imparts that portland cement is hard soon, early strong hydrated properties and preferable density.But
In the erosion in face of seawater and souring, performance is still not fully up to expectations.
Phosphor aluminate cement is a kind of new special cement, and main hydration products are aquation aluminophosphates gels, aquation
Aluminate gel and hydroxyapatite.It is excellent that the characteristics of distinctive compact texture and hydrated product are free of Ca (OH) 2 imparts its
Resistant to sea water corrode and scour resistance, particularly suitable for extra large work engineering construction.But there are a certain amount of CA ore deposits in the cement system
Phase, although the ore deposit is mutually modified by oligo-element P, hydrated product stability increases, and does not have positive evidence card at present
Its bright hydrated product long-time stability are good, and people have doubt to its long-time stability；Meanwhile cementitious material is using process
It is middle to there is centainly dry-shrinkage deformed.For this purpose, present invention introducing element S formation in phosphor aluminate cement system is micro- swollen with aquation
The C of swollen characteristic4A3$ thoroughly eliminates CA ore deposit phases, at the same compensate it is dry-shrinkage deformed during its use, for improving the cementitious material
Long durability can be highly beneficial.
The content of the invention
For the above-mentioned problems in the prior art, the present invention provides a kind of C4A3The phosphor aluminate cement of $ types is ripe
Material using the calcium aluminate in calcium sulphoaluminate substitution phosphor aluminate cement, prepares the C for being mainly used in ocean engineering4A3$ types
Phosphoaluminate clinker.Contain a large amount of calcium aluminates in phosphor aluminate cement, make it have the property of high-early-strength, but also band
Carry out many shortcomings, if setting time is too fast, calcium aluminate hydrated product is unstable etc..And calcium sulphoaluminate also has higher morning
Phase intensity and resistant to sea water erosiveness, and calcining heat is low.
The present invention uses following technical scheme：
A kind of C4A3$ type phosphoaluminate clinkers, raw material composition weight percent are：
The C4A3The firing temperature of $ type phosphoaluminate clinkers is 1350 DEG C~1400 DEG C, burns till rear kiln discharge, warp
Rapid cooling forms.
The C4A3The phosphoaluminate clinker of $ types, ore deposit phase composition degree are：Phosphorus calcium aluminate 35-45%
Part, calcium sulphoaluminate 30-40%, calcium aluminoferrite 5-10%, calcium phosphate 15-25%, interphase 1-10%.Advantages of the present invention exists
In：
1. carrying out dispensing using high calcium and high-sulfur, the CaO in raw material is made not only to meet the needs of phosphorus calcium aluminate and calcium phosphate,
Also remaining CaO and enough sulphur are converted into calcium sulphoaluminate by aluminic acid calcium uptake.
2. containing a small amount of iron phase in dispensing, with the SO in raw material3Play mineralization together, reduce temperature that liquid phase occurs and
Liquid phase viscosity is conducive to the easy fired of high temperature ore deposit phase phosphorus calcium aluminate.
3. calcining heat of the present invention is 1350-1400 DEG C, optimum calcinating temperature is 1360-1380 DEG C, drastically cold after burning till
But.
Specific embodiment
Embodiment 1
Raw material component mass percent is CaO 39.6%, Al2O337.2%, P2O517.7%, SO32.8%, Fe2O3
2.7%, by design proportion mixing, firing temperature is set to 1370 DEG C, the clinker setting time of preparation and mechanical property such as 1 institute of table
Show.
Embodiment 2
Raw material component mass percent is CaO 40.3%, Al2O337.2%, P2O517.1%, SO32.6%, Fe2O3
2.8%, by design proportion mixing, firing temperature is set to 1370 DEG C, the clinker setting time of preparation and mechanical property such as 1 institute of table
Show.
Embodiment 3
Raw material component mass percent is CaO 39.3%, Al2O336.6%, P2O518.2%, SO32.8%, Fe2O3
3.1%, by design proportion mixing, firing temperature is set to 1370 DEG C, the clinker setting time of preparation and mechanical property such as 1 institute of table
Show.
Embodiment 4
Raw material component mass percent is CaO 41.1%, Al2O335.7%, P2O517.2%, SO32.8%, Fe2O3
3.2%, by design proportion mixing, firing temperature is set to 1370 DEG C, the clinker setting time of preparation and mechanical property such as 1 institute of table
Show.
1 C of table4A3$ type phosphoaluminate clinker setting times and mechanical property
The present invention uses C4A3$ substitutes the CA ore deposit phases in phosphoaluminate clinker, realizes C under cryogenic conditions4A3$ and phosphorus
Calcium aluminate coexists；It prepares by C4A3$, phosphorus calcium aluminate and C3These three main mine phases of P and a small amount of calcium aluminoferrite and other among
The C of phase composition4A3$ type phosphoaluminate clinkers.The present invention is fundamentally avoided without CA mineral due to its hydrated product phase
Become (CAH10Or C2AH8Mutually become C3AH6) the next destruction of cause cement volume shrinkage band；Compared with drated calcium aluminate, new clinker body
The C contained in system4A3$ aquations form entringite and assign the clinker more prominent early mechanics characteristics, early stage pressure-proof and snap-resistent
Intensity is preferable；Due to SO3With Fe2O3Effective mineralization, high temperature ore deposit phase phosphorus calcium aluminate form temperature and are greatly reduced, and make this ripe
Material system can synthesize at a lower temperature.
Claims (2)
1. a kind of C4A3The phosphoaluminate clinker of $ types, which is characterized in that its raw material chemical composition weight percent is：
35-50%CaO, 20-40%Al2O3, 10-20%P2O5, 2-3%SO3, 1.5-3%Fe2O3；
The C4A3The firing temperature of $ type phosphoaluminate clinkers is 1350 DEG C~1400 DEG C, burns till rear kiln discharge, through rapidly
It cools down.
2. C according to claim 14A3The phosphoaluminate clinker of $ types, which is characterized in that its ore deposit phase composition percentage
Content is：35-45% parts, calcium sulphoaluminate 30-40%, calcium aluminoferrite 5-10%, calcium phosphate 15-25% of phosphorus calcium aluminate, interphase
1-10%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711417311.8A CN108059377A (en) | 2017-12-25 | 2017-12-25 | A kind of C4A3The phosphoaluminate clinker of $ types |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711417311.8A CN108059377A (en) | 2017-12-25 | 2017-12-25 | A kind of C4A3The phosphoaluminate clinker of $ types |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108059377A true CN108059377A (en) | 2018-05-22 |
Family
ID=62139910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711417311.8A Pending CN108059377A (en) | 2017-12-25 | 2017-12-25 | A kind of C4A3The phosphoaluminate clinker of $ types |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108059377A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109650756A (en) * | 2019-01-11 | 2019-04-19 | 济南大学 | A kind of high temperature resistant Anti-radiation type Quinary system phosphoaluminate clinker |
| CN113149492A (en) * | 2021-04-14 | 2021-07-23 | 济南大学 | Q-phase-containing phospho-sulphoaluminate cement and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1498870A (en) * | 2002-11-08 | 2004-05-26 | 胡佳山 | Gelatinization material of phosphoaluminic salt system |
| US20060288912A1 (en) * | 2002-12-24 | 2006-12-28 | Henghu Sun | Two-component wet cement, process and application thereof |
| CN104140216A (en) * | 2014-06-24 | 2014-11-12 | 济南大学 | High-iron phosphoaluminate cement clinker |
-
2017
- 2017-12-25 CN CN201711417311.8A patent/CN108059377A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1498870A (en) * | 2002-11-08 | 2004-05-26 | 胡佳山 | Gelatinization material of phosphoaluminic salt system |
| US20060288912A1 (en) * | 2002-12-24 | 2006-12-28 | Henghu Sun | Two-component wet cement, process and application thereof |
| CN104140216A (en) * | 2014-06-24 | 2014-11-12 | 济南大学 | High-iron phosphoaluminate cement clinker |
Non-Patent Citations (1)
| Title |
|---|
| SHUAI YANG,ET AL: "Mineral composition and performance of phosphoaluminate clinker with addition of SO3", 《APPLIED MECHANICS AND MATERIALS》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109650756A (en) * | 2019-01-11 | 2019-04-19 | 济南大学 | A kind of high temperature resistant Anti-radiation type Quinary system phosphoaluminate clinker |
| CN109650756B (en) * | 2019-01-11 | 2021-04-13 | 济南大学 | High-temperature-resistant anti-radiation quinary system phosphoaluminate cement clinker |
| CN113149492A (en) * | 2021-04-14 | 2021-07-23 | 济南大学 | Q-phase-containing phospho-sulphoaluminate cement and preparation method thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20180522 |
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| RJ01 | Rejection of invention patent application after publication |