CN108101396A - Portland cement and preparation method thereof - Google Patents
Portland cement and preparation method thereof Download PDFInfo
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- CN108101396A CN108101396A CN201711435307.4A CN201711435307A CN108101396A CN 108101396 A CN108101396 A CN 108101396A CN 201711435307 A CN201711435307 A CN 201711435307A CN 108101396 A CN108101396 A CN 108101396A
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- portland cement
- cement
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- hydrochlorides
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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
- C04B7/345—Hydraulic cements not provided for in one of the groups C04B7/02 - C04B7/34
-
- 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
- C04B7/02—Portland 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
- C04B7/00—Hydraulic cements
- C04B7/14—Cements containing slag
- C04B7/147—Metallurgical 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
- C04B7/28—Cements from oil shales, residues or waste other than slag from combustion residues, e.g. ashes or slags from waste incineration
-
- 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)
- Combustion & Propulsion (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention relates to a kind of portland cements, count in parts by weight, and raw material includes：A kind of portland cement, is counted in parts by weight, and raw material includes：60 70 parts of clinker, 15 19 parts of ultrafine slag, 57 parts of lime stone, 57 parts of gypsum, 69 parts of extra material；The extra material is made of silicon ash, metering system acid calcium salt hydrate, 2,2,2 trifluoroethylamine hydrochlorides, 2,2 difluoro propylamin hydrochlorides.This kind of portland cement is formed the calcirm-fluoride for being more prone to crystallization than calcium hydroxide with calcium ion, so as to largely consume calcium ion, makes C in aquation early period, the fluorine ion ionized out using 2,2,2 trifluoroethylamine hydrochlorides, 2,2 difluoro propylamin hydrochlorides3S surfaces are difficult to form double electrical layers, so that C3The induction period of S, which shortens, even to disappear, so that heat evolution velocity is accelerated rapidly, aquation heat liberation rate, heat release rate early period improves.Therefore, cement floats in the scope of the heat liberation rate, heat release rate in hardening maintenance stage between 5 10%, and crack is smaller in the cement after hardening, and the intensity of cement specimen improves.
Description
Technical field
The present invention relates to building material field, more specifically, it is related to a kind of portland cement and preparation method thereof.
Background technology
Cement is a kind of powdery hydraulicity inorganic coagulation material, add water stir after into slurry, can be in air or water
Hardening, and can the materials such as sand, stone are cemented together securely.Therefore, at present usually using systems such as cementing rubble, sands
Into concrete, not only intensity is higher for the concrete after hardening, and can also resist the erosion of fresh water or brackish water.Thus cement
As a kind of important cementitious material, it is widely used in the engineerings such as civil construction, water conservancy, national defence.
Cement is during hardening, first, cement granules and water haptoreaction, heat liberation rate, heat release rate quickly, but due to gypsum
Presence, the surface of cement granules can form one layer of passivating film, be reduced so as to cause heat liberation rate, heat release rate.Filling with cement and water afterwards
Tap is touched, and cement generates hydrated product with water fast reaction, and generates amount of heat.Therefore, cement is hardening the maintenance stage,
The heat liberation rate, heat release rate of cement system changes greatly, and the shrinking percentage for causing cement is different, and cement is generated during hardening compared with multiple cracking,
The cement specimen strength reduction caused, there are security risks.
The content of the invention
It is an object of the invention to provide a kind of portland cements, and during hardening of cement, cement heat liberation rate, heat release rate early period increases
Add, crack is smaller in the cement after hardening, and the intensity of cement specimen improves.
The present invention above-mentioned purpose technical scheme is that：A kind of portland cement, by weight
Number meter, raw material include：60-70 parts of clinker, 15-19 parts of ultrafine slag, 5-7 parts of lime stone, 5-7 parts of gypsum, extra material 6-9
Part；The extra material is by silicon ash, metering system acid calcium salt hydrate, 2,2,2- trifluoroethylamines hydrochloride, 2,2- difluoro propylamine salt
Hydrochlorate is made.
Preferably, the silicon ash, metering system acid calcium salt hydrate, 2,2,2- trifluoroethylamine hydrochlorides, 2,2- difluoros third
The mass ratio of amine hydrochlorate is 8:4:2:1.
Preferably, the average grain diameter of the silicon ash is 0.1-0.3 μm, specific surface area 20-28m/g.
Preferably, solvent is added in the extra material preparation process.
Preferably, the solvent is ethyl acetate, ethyl alcohol, methanol, the one or more of dichloromethane.
Another object of the present invention is to provide the preparation method of portland cement described above.
The present invention above-mentioned purpose technical scheme is that：A kind of preparation side of portland cement
Method comprises the following steps：
The preparation of extra material：2,2,2- trifluoroethylamine hydrochlorides, 2,2- difluoro propylamin hydrochlorides is taken to be put into solvent, raise solvent
Temperature is to 28-34 DEG C, and uniform stirring, after until being completely dissolved, second of rise temperature volatilizees solvent, is mixed after dry
Close object；Backward mixture in add silicon ash, metering system acid calcium salt hydrate, uniformly mixing after, obtain extra material；
It is prepared by portland cement：Clinker, ultrafine slag, lime stone, gypsum, extra material are taken, uniformly after mixing, in cement grinding mill
Even milling can obtain finished cement.
Preferably, in the step of extra material is prepared, it is 60-66 DEG C that second, which raises temperature,.
Preferably, the average grain diameter of the portland cement is 13-17 μm.
In conclusion the invention has the advantages that：
1st, the portland cement that is prepared of the present invention utilizes 2,2,2- trifluoroethylamine hydrochlorides, 2,2- difluoros in aquation early period
The fluorine ion that propylamin hydrochloride ionizes out forms the calcirm-fluoride for being more prone to crystallization than calcium hydroxide with calcium ion, so as to largely disappear
Calcium ion is consumed, makes C3S surfaces are difficult to form double electrical layers, so that C3The induction period of S, which shortens, even to disappear, so that aquation
Process is accelerated rapidly, and aquation heat liberation rate, heat release rate early period improves.Therefore, cement is hardening the scope of the heat liberation rate, heat release rate in maintenance stage in 5-10%
Between float, crack is smaller in the cement after hardening, and the intensity of cement specimen improves.
2nd, after the slag that the present invention is filled, the heat of hydration is reduced, cement increased in the intensity of the 28th day, while prevented cement
Cause crack due to temperature rises difference inside test specimen.In addition filling the cement of slag can make maturing have good sulfuric-resisting
Salt contamination corrosion reduces and inhibits chlorine ion binding capacity performance and resistant to sea water aggressivity, anti-carbonation, alkali resistant.
Specific embodiment
Involved all substances are commercially available in the embodiment of the present invention.
First, embodiment is made
The specification of used sample is as shown in table 1 in each embodiment.
Embodiment 1
The preparation of extra material：2,2,2- trifluoroethylamine hydrochloride 1kg, 2,2- difluoro propylamin hydrochlorides 0.5kg is taken to be put into acetic acid second
In ester, rise ethyl acetate temperature is to 31 DEG C, uniform stirring, after until being completely dissolved, raise for second temperature to 63 DEG C will
Solvent volatilizees, and mixture is obtained after dry；Backward mixture in add silicon ash 4kg, metering system acid calcium salt hydrate 2kg,
Uniformly after mixing, extra material is obtained, wherein, the average grain diameter of silicon ash is 0.2 μm, specific surface area 24m/g；
It is prepared by portland cement：Clinker 65kg, ultrafine slag 17kg, lime stone 6kg, gypsum 6kg, extra material 7.5kg are taken, uniformly
After mixing, uniformly milling can obtain the finished cement that average grain diameter is 15 μm in cement grinding mill.
Embodiment 2
The preparation of extra material：2,2,2- trifluoroethylamine hydrochloride 0.8kg, 2,2- difluoro propylamin hydrochlorides 0.4kg is taken to be put into ethyl alcohol
In, rise ethyl alcohol temperature is to 28 DEG C, and uniform stirring, after until being completely dissolved, second of rise temperature waves solvent to 66 DEG C
Hair obtains mixture after dry；Backward mixture in add silicon ash 4.8kg, metering system acid calcium salt hydrate 1.6kg,
After even mixing, extra material is obtained, wherein, the average grain diameter of silicon ash is 0.2 μm, specific surface area 28m/g；
It is prepared by portland cement：Clinker 60kg, ultrafine slag 15kg, lime stone 5kg, gypsum 5kg, extra material 6kg are taken, it is uniformly mixed
After conjunction, uniformly milling can obtain the finished cement that average grain diameter is 17 μm in cement grinding mill.
Embodiment 3
The preparation of extra material：2,2,2- trifluoroethylamine hydrochloride 1.2kg, 2,2- difluoro propylamin hydrochlorides 0.4kg is taken to be put into methanol
In, rise methanol temperature is to 28 DEG C, and uniform stirring, after until being completely dissolved, second of rise temperature waves solvent to 66 DEG C
Hair obtains mixture after dry；Backward mixture in add silicon ash 3.2kg, metering system acid calcium salt hydrate 2.4kg,
After even mixing, extra material is obtained, wherein, the average grain diameter of silicon ash is 0.3 μm, specific surface area 28m/g；
It is prepared by portland cement：Clinker 60kg, ultrafine slag 19kg, lime stone 5kg, gypsum 5kg, extra material 6kg are taken, it is uniformly mixed
After conjunction, uniformly milling can obtain the finished cement that average grain diameter is 17 μm in cement grinding mill.
Embodiment 4
The preparation of extra material：2,2,2- trifluoroethylamine hydrochloride 0.8kg, 2,2- difluoro propylamin hydrochlorides 0.4kg is taken to be put into dichloro
In methane, rise dichloromethane temperature is to 34 DEG C, and uniform stirring, after until being completely dissolved, second of rise temperature is to 60 DEG C
Solvent is volatilized, mixture is obtained after dry；Backward mixture in add silicon ash 4.8kg, metering system acid calcium salt hydrate
2kg uniformly after mixing, obtains extra material, wherein, the average grain diameter of silicon ash is 0.1 μm, specific surface area 24m/g；
It is prepared by portland cement：Clinker 70kg, ultrafine slag 15kg, lime stone 5kg, gypsum 5kg, extra material 9kg are taken, it is uniformly mixed
After conjunction, uniformly milling can obtain the finished cement that average grain diameter is 13 μm in cement grinding mill.
Embodiment 5
The preparation of extra material：2,2,2- trifluoroethylamine hydrochloride 1.2kg, 2,2- difluoro propylamin hydrochlorides 0.6kg is taken to be put into ethyl alcohol
In, rise ethyl alcohol temperature is to 34 DEG C, and uniform stirring, after until being completely dissolved, second of rise temperature waves solvent to 60 DEG C
Hair obtains mixture after dry；Backward mixture in add silicon ash 3.2kg, metering system acid calcium salt hydrate 1.6kg,
After even mixing, extra material is obtained, wherein, the average grain diameter of silicon ash is 0.2 μm, specific surface area 24m/g；
It is prepared by portland cement：Clinker 70kg, ultrafine slag 19kg, lime stone 7kg, gypsum 7kg, extra material 9kg are taken, it is uniformly mixed
After conjunction, uniformly milling can obtain the finished cement that average grain diameter is 13 μm in cement grinding mill.
Embodiment 6
The preparation of extra material：2,2,2- trifluoroethylamine hydrochloride 0.8kg, 2,2- difluoro propylamin hydrochlorides 0.6kg is taken to be put into acetic acid
In ethyl ester, rise ethyl acetate temperature is to 28 DEG C, and uniform stirring, after until being completely dissolved, second of rise temperature is to 60 DEG C
Solvent is volatilized, mixture is obtained after dry；Backward mixture in add silicon ash 4.8kg, metering system acid calcium salt hydrate
2.4kg uniformly after mixing, obtains extra material, wherein, the average grain diameter of silicon ash is 0.3 μm, specific surface area 20m/g；
It is prepared by portland cement：Clinker 70kg, ultrafine slag 15kg, lime stone 7kg, gypsum 7kg, extra material 6kg are taken, it is uniformly mixed
After conjunction, uniformly milling can obtain the finished cement that average grain diameter is 13 μm in cement grinding mill.
2nd, comparative example is made
Comparative example 1
It is prepared by portland cement：Clinker 65kg, ultrafine slag 17kg, lime stone 6kg, gypsum 6kg are taken, uniformly after mixing, in water
Uniformly milling can obtain the finished cement that average grain diameter is 15 μm in mud mill.
Comparative example 2
The preparation of extra material：2,2,2- trifluoroethylamine hydrochloride 1kg is taken to be put into ethyl acetate, rise ethyl acetate temperature to 31
DEG C, uniform stirring, after until being completely dissolved, second of rise temperature volatilizees solvent to 63 DEG C, and mixture is obtained after dry；
Backward mixture in add silicon ash 4kg, metering system acid calcium salt hydrate 2kg, uniformly after mixing, obtain extra material, wherein,
The average grain diameter of silicon ash is 0.2 μm, specific surface area 24m/g；
It is prepared by portland cement：Clinker 65kg, ultrafine slag 17kg, lime stone 6kg, gypsum 6kg, extra material 7.5kg are taken, uniformly
After mixing, uniformly milling can obtain the finished cement that average grain diameter is 15 μm in cement grinding mill.
Comparative example 3
The preparation of extra material：2,2- difluoro propylamin hydrochlorides 0.5kg is taken to be put into ethyl acetate, rise ethyl acetate temperature to 31
DEG C, uniform stirring, after until being completely dissolved, second of rise temperature volatilizees solvent to 63 DEG C, and mixture is obtained after dry；
Backward mixture in add silicon ash 4kg, metering system acid calcium salt hydrate 2kg, uniformly after mixing, obtain extra material, wherein,
The average grain diameter of silicon ash is 0.2 μm, specific surface area 24m/g；
It is prepared by portland cement：Clinker 65kg, ultrafine slag 17kg, lime stone 6kg, gypsum 6kg, extra material 7.5kg are taken, uniformly
After mixing, uniformly milling can obtain the finished cement that average grain diameter is 15 μm in cement grinding mill.
3rd, performance test
Evaluation index and detection method are as follows used by portland cement prepared by various embodiments above：
Compression strength：Portland cement and water are pressed 1:5 ratio is mixed and stirred, and is put into the mold that reference block is made, and is existed respectively
The compression strength with 95% fraction measured at the 7th day, the 14th day, the 28th day.
Apparent property：Microcosmic detection is carried out to portland cement reference block using scanning electron microscope.
Temperature：During hardening of cement, position at two was taken at random in first 7 days, tests the maximum temperature difference of concrete.
The performance indicator of various embodiments above and comparative example is as shown in table 1.
The performance test results of portland cement prepared by 1 each embodiment of table and comparative example
As can be seen that the portland cement of the invention being prepared free from flaw in maintenance processes are hardened generates from above-mentioned table,
And pass through compression strength performance test, the early strength and later strength of portland cement meet the construction of portland cement
Code requirement.
Wherein, clinker, ultrafine slag, lime stone, gypsum are only used in comparative example 1 and portland cement is made, cement is hard
During change, first, cement granules and water haptoreaction, heat liberation rate, heat release rate quickly, but due to the presence of gypsum, cement granules
Surface can form one layer of passivating film, be reduced so as to cause heat liberation rate, heat release rate.Afterwards as cement and water come into full contact with, cement is quick with water
Reaction generation hydrated product, and generate amount of heat.Therefore, cement becomes in hardening maintenance stage, the heat liberation rate, heat release rate of cement system
Change larger, the shrinking percentage for causing cement is different, and cement generates the cement specimen compared with multiple cracking, caused during hardening
Strength reduction.
2,2- difluoro propylamin hydrochlorides are added without in comparative example 2, therefore cause the fluorine ion of ionization out less, so that
C3The induction period of S does not shorten, and heat evolution velocity is relatively slow compared to embodiment 1, therefore causes the strength reduction of cement specimen.
2,2,2- trifluoroethylamine hydrochlorides are added without in comparative example 3, therefore cause the fluorine ion of ionization out less, so as to
Make C3The induction period of S does not shorten, and heat evolution velocity is relatively slow compared to embodiment 1, therefore causes the strength reduction of cement specimen.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, people in the art
Member can as needed make the present embodiment the modification of no creative contribution after this specification is read, but as long as at this
It is all protected in the right of invention be subject to Patent Law.
Claims (8)
1. a kind of portland cement, it is characterized in that, it counts in parts by weight, raw material includes：60-70 parts of clinker, ultrafine slag 15-
19 parts, 5-7 parts of lime stone, 5-7 parts of gypsum, 6-9 parts of extra material；
The extra material is by silicon ash, metering system acid calcium salt hydrate, 2,2,2- trifluoroethylamines hydrochloride, 2,2- difluoro propylamine salt
Hydrochlorate is made.
2. portland cement according to claim 1, it is characterized in that, the silicon ash, metering system acid calcium salt hydrate, 2,
2,2- trifluoroethylamines hydrochloride, the mass ratio of 2,2- difluoro propylamin hydrochlorides are 8:4:2:1.
3. portland cement according to claim 1, it is characterized in that, the average grain diameter of the silicon ash is 0.1-0.3 μm, than
Surface area is 20-28m/g.
4. portland cement according to claim 1, it is characterized in that, add solvent in the extra material preparation process.
5. portland cement according to claim 4, it is characterized in that, the solvent is ethyl acetate, ethyl alcohol, methanol, two
The one or more of chloromethanes.
6. a kind of method for preparing portland cement as described in claim 1, it is characterized in that, comprise the following steps：
The preparation of extra material：2,2,2- trifluoroethylamine hydrochlorides, 2,2- difluoro propylamin hydrochlorides is taken to be put into solvent, raise solvent
Temperature is to 28-34 DEG C, and uniform stirring, after until being completely dissolved, second of rise temperature volatilizees solvent, is mixed after dry
Close object；Backward mixture in add silicon ash, metering system acid calcium salt hydrate, uniformly mixing after, obtain extra material；
It is prepared by portland cement：Clinker, ultrafine slag, lime stone, gypsum, extra material are taken, uniformly after mixing, in cement grinding mill
Even milling can obtain finished cement.
7. the preparation method of portland cement according to claim 6, it is characterized in that, the step of extra material is prepared
In, it is 60-66 DEG C that second, which raises temperature,.
8. the preparation method of portland cement according to claim 6, it is characterized in that, the average grain of the portland cement
Footpath is 13-17 μm.
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| CN201711435307.4A CN108101396A (en) | 2017-12-26 | 2017-12-26 | Portland cement and preparation method thereof |
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| CN201711435307.4A CN108101396A (en) | 2017-12-26 | 2017-12-26 | Portland cement and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112456823A (en) * | 2020-12-21 | 2021-03-09 | 铜川声威建材有限责任公司榆林分公司 | Cement mill technology doped with mineral powder and wollastonite powder |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103833248A (en) * | 2010-07-01 | 2014-06-04 | 陈民 | Cement composition |
| US9464000B2 (en) * | 2014-07-10 | 2016-10-11 | Board Of Trustees Of Michigan State University | Augmented cementitious binder compositions and related methods |
-
2017
- 2017-12-26 CN CN201711435307.4A patent/CN108101396A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103833248A (en) * | 2010-07-01 | 2014-06-04 | 陈民 | Cement composition |
| US9464000B2 (en) * | 2014-07-10 | 2016-10-11 | Board Of Trustees Of Michigan State University | Augmented cementitious binder compositions and related methods |
Non-Patent Citations (3)
| Title |
|---|
| 林锦明主编: "《化学实验室工作手册》", 31 January 2016, 第二军医大学出版社 * |
| 贾丽莉: "丙烯酸盐对水泥性能及水化进程的影响", 《中国优秀硕士学位论文全文数据库工程科技Ⅰ辑》 * |
| 陈霞等: "磷酸盐和氟盐对水泥凝结特性的影响及作用机理", 《长江科学院院报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112456823A (en) * | 2020-12-21 | 2021-03-09 | 铜川声威建材有限责任公司榆林分公司 | Cement mill technology doped with mineral powder and wollastonite powder |
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Application publication date: 20180601 |