CN108863120A - A kind of high-strength sulphoaluminate cement base material and preparation method thereof - Google Patents
A kind of high-strength sulphoaluminate cement base material and preparation method thereof Download PDFInfo
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- CN108863120A CN108863120A CN201810787704.6A CN201810787704A CN108863120A CN 108863120 A CN108863120 A CN 108863120A CN 201810787704 A CN201810787704 A CN 201810787704A CN 108863120 A CN108863120 A CN 108863120A
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- Prior art keywords
- sulphoaluminate cement
- flyash
- base material
- strength
- cement base
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Classifications
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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
- C04B7/32—Aluminous cements
-
- 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
- C04B28/02—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 hydraulic cements other than calcium sulfates
- C04B28/06—Aluminous cements
-
- 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
- C04B7/36—Manufacture of hydraulic cements in general
-
- 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
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/38—Preparing or treating the raw materials individually or as batches, e.g. mixing with fuel
-
- 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
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/48—Clinker treatment
- C04B7/52—Grinding ; After-treatment of ground cement
-
- 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
Abstract
The present invention relates to a kind of high-strength sulphoaluminate cement base materials and preparation method thereof, are made of following raw material by weight percentage：Sulphoaluminate cement clinker 50 ~ 60%, flyash 25 ~ 35%, gypsum 5 ~ 15%, exciting agent 5 ~ 15%；The exciting agent is the sulphur calcium silicates intergradient mineral formed during firing sulphoaluminate cement clinker.Knot of the present invention, which is manufactured, to be easy, is easy to use, through the invention, doping quantity of fly ash in sulphoaluminate cement base material can be made to be up to 25 ~ 35%, reduce the dosage of sulphoaluminate cement clinker, reduce material cost, reduce pollution of the flyash to environment, guarantee and improve the intensity of sulphoaluminate cement base material, has many advantages, such as energy-saving, simple process, easy to implement.
Description
Technical field
The present invention relates to a kind of high-strength sulphoaluminate cement base materials and preparation method thereof, belong to the field of building materials.
Background technique
Traditional portland is since calcination temperature is high, CO2Discharge amount is big and faces huge challenge.With Conventional Portland water
Mud is compared, and sulphate aluminium cement is in calcination temperature and CO2Discharge aspect significantly reduces, and meets cement industry low-carbon, energy-efficient
Development trend has vast potential for future development.Sulphate aluminium cement is high, freeze proof, impervious, corrosion-resistant etc. excellent with early strength
Benign energy, is mainly used in winter construction, rapid rush-repair engineering and prefabricated components etc..However, sulphate aluminium cement conduct
A kind of special cement, alumina quality requirements are higher in raw material, lead to manufacture of cement increased costs, limit aluminium sulfate water
The popularization and application of mud.
Flyash is the ashes being discharged from flue after coal dust firing in thermal power generation, is that common industrial solid is discarded
Object.It is added to flyash mixed in sulphate aluminium cement, the building resourceization of flyash on the one hand can be promoted to utilize, on the other hand
Manufacture of cement cost can be reduced.However, sulphate aluminium cement compares ordinary portland cement, calcium hydroxide in hydrated product
Production quantity substantially reduce, the stimulation effect of flyash activity is reduced, moreover, as doping quantity of fly ash increases, aluminium sulfate
Each age compression strength of cement-based gelling material generally reduces, and therefore, the volume of flyash is lower in sulphate aluminium cement,
In actual production, usually not more than 20%.Under the conditions of existing technology of producing cement, how in the certain volume of flyash
Under the conditions of guarantee and improve the intensity of sulphoaluminate cement base material, or even improve fine coal under the premise of guaranteeing the strength of materials
The volume of ash, is to further decrease material cost, expands the critical issue of its application range.
Sulphur calcium silicates (It is abbreviated as) it is the centre formed in sulphoaluminate cement clinker calcination process
Mineral just will form sulphur calcium silicates when gypsum is incorporated excess and too low calcination temperature in raw material.In general, sulphur calcium silicates quilt
A kind of inert mineral is considered, but applicant's current research is found, after sulphur calcium silicates can not only improve sulphate aluminium cement
Phase intensity, but also the potential hydraulically active of aluminosilicate waste residue can be excited.Therefore, applicant thinks that sulphur calcium silicates can be with
As the exciting agent of flyash activity, volume of the flyash in sulphate aluminium cement is improved, and improves sulphate aluminium cement
The performance of sill.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of high-strength sulphoaluminate cement base material and preparation method thereof,
In the case where increasing flyash dosage, reducing sulphoaluminate cement clinker dosage, guarantee and improve the intensity of cement, reduce at
This.
The object of the present invention is achieved like this, a kind of high-strength sulphoaluminate cement base material, which is characterized in that by weight
Percentage is made of following raw material：Sulphoaluminate cement clinker 50~60%, gypsum 5~15%, swashs at flyash 25~35%
Send out agent 5~15%；The exciting agent is the sulphur calcium silicates intergradient mineral formed during firing sulphoaluminate cement clinker.
Calcium sulphoaluminate content is greater than 60% in the sulphoaluminate cement clinker mineral composition.
The flyash is I grade of flyash or II grade of flyash.
The gypsum uses dihydrate gypsum or natural anhydrite.
The sulphur calcium silicates intergradient mineral by include calcium carbonate, silica, calcium sulphate dihydrate, calcirm-fluoride in mass ratio
5.8:1.7:2.5:The raw material of 0.5 composition high-temperature calcination, heat preservation under the conditions of 1100~1200 DEG C are prepared for 4 hours.
The mass content of sulphur calcium silicates is greater than 80% in the exciting agent.
A kind of preparation method of high-strength sulphoaluminate cement base material, which is characterized in that preparation raw material, raw material include first
Sulphoaluminate cement clinker, flyash, gypsum, exciting agent, each matter of sulphoaluminate cement clinker, flyash, gypsum, exciting agent
Measuring percentage is respectively 50~60%, 25~35%, 5~15%, 5~15%；Then ready raw material is mixed through ball mill
Even, grinding to fineness is that 0.08mm square hole screen tails over 2% hereinafter, obtaining high-strength sulphoaluminate cement base material；Wherein, it excites
Agent is the sulphur calcium silicates intergradient mineral formed during firing sulphoaluminate cement clinker.
Side of the present invention, which manufactures, to be easy, is easy to use, through the invention, a kind of high-strength sulphoaluminate cement base material,
Its each component is by weight percentage：Sulphoaluminate cement clinker 50~60%, flyash 25~35%, gypsum 5~
15%, exciting agent 5~15%.
Applicant analyzes the reason of sulphate aluminium cement strength reduction of adding coal ash, is the volcanic ash of flyash
Activity is difficult to play, and the present invention can solve this using sulphur calcium silicates mineral as the exciting agent of volcanic ash activity of coal ash
Problem.Sulphur calcium silicates is as a kind of intergradient mineral formed in sulphoaluminate cement clinker calcination process, applicant's current research
It was found that sulphur calcium silicates can not only improve the later strength of sulphate aluminium cement, but also aluminosilicate waste residue can be excited
Potential hydraulically active.Therefore, applicant thinks that sulphur calcium silicates can be used as the activity excitant of flyash, this is for existing skill
Art has substantive contribution function outstanding.
According to the above scheme, the sulphur calcium silicates is by including calcium carbonate, silica, calcium sulphate dihydrate, calcirm-fluoride by matter
Measure ratio 5.8:1.7:2.5:The raw material of 0.5 composition high-temperature calcination, heat preservation under the conditions of 1100~1200 DEG C are prepared for 4 hours,
It is more favorable for the formation of sulphur calcium silicates mineral in this way, improves purity.The mass content of sulphur calcium silicates is big in the mixed mineral of preparation
In 80%.
Further, calcium sulphoaluminate content is greater than 60% in the sulphoaluminate cement clinker mineral composition.Described
Flyash is I grade of flyash or II grade of flyash.The gypsum uses dihydrate gypsum or natural anhydrite.
A kind of preparation method of sulphoaluminate cement base material of the present invention, the specific steps are that：Sulphate aluminium cement is ripe
Material, flyash, gypsum and sulphur calcium silicates are mixed by ball mill in proportion, grinding to fineness is that 0.08mm square hole screen tails over 2%
Hereinafter, obtaining sulphoaluminate cement base material.
The invention has the advantages that：
1), using sulphur calcium silicates mineral as the activity excitant of flyash, increasing flyash dosage, reducing sulphur aluminic acid
In the case where salt cement clinker dosage, guarantee and improve the intensity of cement, the volume of flyash reaches as high as 35%, reduces water
Mud production cost.
2), the preparation of sulphur calcium silicates mineral is simple, and grindability is good, is suitble to industrialized production, and the activity as flyash swashs
It is easy to implement to send out agent.
3), sulphoaluminate cement base material technology prepared by the present invention is simple, and raw material is easy to get, and can be widely applied to building neck
In domain.
The present invention can make doping quantity of fly ash in sulphoaluminate cement base material be up to 25~35%, reduce aluminium sulfate water
The dosage of mud clinker, reduces material cost, reduces pollution of the flyash to environment, guarantees and improve sulphate aluminium cement
The intensity of sill has many advantages, such as energy-saving, simple process, easy to implement.
Specific embodiment
The present invention is described in further detail With reference to embodiment.
Embodiment 1：
A kind of high-strength sulphoaluminate cement base material, each component are by weight percentage：
Sulphoaluminate cement clinker：50%, I grade of flyash：30%, dihydrate gypsum：8%, sulphur calcium silicates：12%；
Wherein, the sulphur calcium silicates by include calcium carbonate, silica, calcium sulphate dihydrate, calcirm-fluoride in mass ratio
5.8:1.7:2.5:The raw material of 0.5 composition high-temperature calcination, heat preservation under the conditions of 1100~1200 DEG C are prepared for 4 hours.
Each component raw material is weighed according to above-mentioned predetermined quality percentage, intergrinding to fineness is 0.08mm after mixing
Square hole screen tails over 2% hereinafter, obtaining sulphoaluminate cement base material.According to national standard GB1346-2001《Cement normal consistency is used
Water, setting time, the stability method of inspection》,GB/T17671-1999《Cement strength testing method》Cement is tested respectively
Setting time and mortar strength, measurement result are as follows：
Embodiment 2：
A kind of high-strength sulphoaluminate cement base material, each component are by weight percentage：
Sulphoaluminate cement clinker：55%, I grade of flyash：25%, dihydrate gypsum：10%, sulphur calcium silicates：10%；
Wherein, the sulphur calcium silicates by include calcium carbonate, silica, calcium sulphate dihydrate, calcirm-fluoride in mass ratio
5.8:1.7:2.5:The raw material of 0.5 composition high-temperature calcination, heat preservation under the conditions of 1100~1200 DEG C are prepared for 4 hours.
Each component raw material is weighed according to above-mentioned predetermined quality percentage, intergrinding to fineness is 0.08mm after mixing
Square hole screen tails over 2% hereinafter, obtaining sulphoaluminate cement base material.According to national standard GB1346-2001《Cement normal consistency is used
Water, setting time, the stability method of inspection》,GB/T17671-1999《Cement strength testing method》Cement is tested respectively
Setting time and mortar strength, measurement result are as follows：
Embodiment 3：
A kind of high-strength sulphoaluminate cement base material, each component are by weight percentage：
Sulphoaluminate cement clinker：58%, II grade of flyash：26%, dihydrate gypsum：8%, sulphur calcium silicates：8%；
Wherein, the sulphur calcium silicates by include calcium carbonate, silica, calcium sulphate dihydrate, calcirm-fluoride in mass ratio
5.8:1.7:2.5:The raw material of 0.5 composition high-temperature calcination, heat preservation under the conditions of 1100~1200 DEG C are prepared for 4 hours.
Each component raw material is weighed according to above-mentioned predetermined quality percentage, intergrinding to fineness is 0.08mm after mixing
Square hole screen tails over 2% hereinafter, obtaining sulphoaluminate cement base material.According to national standard GB1346-2001《Cement normal consistency is used
Water, setting time, the stability method of inspection》,GB/T17671-1999《Cement strength testing method》Cement is tested respectively
Setting time and mortar strength, measurement result are as follows：
It is compared by each embodiment and the blank group for the same doping quantity of fly ash for not adding sulphur calcium silicates, it can be seen that this hair
3d, 28d intensity of bright sulphoaluminate cement base material all significantly improve.Therefore, the present invention is using sulphur calcium silicates mineral as powder
The activity excitant of coal ash, can not only increase the volume of flyash, but also be conducive to strength of cement raising, significant effect.
Claims (7)
1. a kind of high-strength sulphoaluminate cement base material, which is characterized in that be made of following raw material by weight percentage：Sulphur aluminic acid
Salt cement clinker 50 ~ 60%, flyash 25 ~ 35%, gypsum 5 ~ 15%, exciting agent 5 ~ 15%；The exciting agent is to fire sulphur aluminic acid
The sulphur calcium silicates intergradient mineral formed during salt cement clinker.
2. a kind of high-strength sulphoaluminate cement base material according to claim 1, which is characterized in that the aluminium sulfate
Calcium sulphoaluminate content is greater than 60% in cement clinker mineral composition.
3. a kind of high-strength sulphoaluminate cement base material according to claim 1, which is characterized in that the flyash is
I grade of flyash or II grade of flyash.
4. a kind of high-strength sulphoaluminate cement base material according to claim 1, which is characterized in that the gypsum uses
Dihydrate gypsum or natural anhydrite.
5. a kind of high-strength sulphoaluminate cement base material according to claim 1, which is characterized in that the sulphur calcium silicates
Intergradient mineral is by including calcium carbonate, silica, calcium sulphate dihydrate, calcirm-fluoride in mass ratio 5.8:1.7:2.5:0.5 composition
Raw material high-temperature calcination, heat preservation under the conditions of 1100 ~ 1200 DEG C are prepared for 4 hours.
6. a kind of high-strength sulphoaluminate cement base material according to claim 1, which is characterized in that in the exciting agent
The mass content of sulphur calcium silicates is greater than 80%.
7. a kind of preparation method of high-strength sulphoaluminate cement base material according to claim 1 to 6, special
Sign is, prepares raw material first, raw material includes sulphoaluminate cement clinker, flyash, gypsum, exciting agent, sulphate aluminium cement
Each mass percent of clinker, flyash, gypsum, exciting agent is respectively 50 ~ 60%, 25 ~ 35%, 5 ~ 15%, 5 ~ 15%；Then will prepare
Good raw material is mixed through ball mill, grinding to fineness is that 0.08mm square hole screen tails over 2% hereinafter, obtaining high-strength sulphate aluminium cement
Sill；Wherein, exciting agent is the sulphur calcium silicates intergradient mineral formed during firing sulphoaluminate cement clinker.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810787704.6A CN108863120A (en) | 2018-07-18 | 2018-07-18 | A kind of high-strength sulphoaluminate cement base material and preparation method thereof |
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| CN201810787704.6A CN108863120A (en) | 2018-07-18 | 2018-07-18 | A kind of high-strength sulphoaluminate cement base material and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110498631A (en) * | 2019-08-30 | 2019-11-26 | 北京工业大学 | A method of improving sulphate aluminium cement stable long-term strength |
| CN115504746A (en) * | 2021-06-22 | 2022-12-23 | 国家能源投资集团有限责任公司 | Gelled material composition, gelled material, and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1401604A (en) * | 2002-09-25 | 2003-03-12 | 陈智丰 | Process for making quick hardening aluminosulfate cement |
| CN104609750A (en) * | 2015-02-09 | 2015-05-13 | 重庆大学 | Sulphoaluminate cement and preparation method thereof |
| EP3199500A1 (en) * | 2016-01-29 | 2017-08-02 | Cimsa Cimento Sanayi Ve Ticaret Anonim Sirketi | Calcium sulphoaluminate cement with mayenite phase |
| CN107793052A (en) * | 2017-11-29 | 2018-03-13 | 扬州大学 | A kind of Portland fly ash cement and preparation method thereof |
| CN107857493A (en) * | 2017-11-29 | 2018-03-30 | 扬州大学 | A kind of method that sulphate aluminium cement is modified |
-
2018
- 2018-07-18 CN CN201810787704.6A patent/CN108863120A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1401604A (en) * | 2002-09-25 | 2003-03-12 | 陈智丰 | Process for making quick hardening aluminosulfate cement |
| CN104609750A (en) * | 2015-02-09 | 2015-05-13 | 重庆大学 | Sulphoaluminate cement and preparation method thereof |
| EP3199500A1 (en) * | 2016-01-29 | 2017-08-02 | Cimsa Cimento Sanayi Ve Ticaret Anonim Sirketi | Calcium sulphoaluminate cement with mayenite phase |
| CN107793052A (en) * | 2017-11-29 | 2018-03-13 | 扬州大学 | A kind of Portland fly ash cement and preparation method thereof |
| CN107857493A (en) * | 2017-11-29 | 2018-03-30 | 扬州大学 | A kind of method that sulphate aluminium cement is modified |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110498631A (en) * | 2019-08-30 | 2019-11-26 | 北京工业大学 | A method of improving sulphate aluminium cement stable long-term strength |
| CN115504746A (en) * | 2021-06-22 | 2022-12-23 | 国家能源投资集团有限责任公司 | Gelled material composition, gelled material, and preparation method and application thereof |
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