CN108409267A - It is easy to the early strong sulphate aluminium cement slurry and preparation method thereof of pumping - Google Patents
It is easy to the early strong sulphate aluminium cement slurry and preparation method thereof of pumping Download PDFInfo
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- CN108409267A CN108409267A CN201810360512.7A CN201810360512A CN108409267A CN 108409267 A CN108409267 A CN 108409267A CN 201810360512 A CN201810360512 A CN 201810360512A CN 108409267 A CN108409267 A CN 108409267A
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- Prior art keywords
- sulphate aluminium
- aluminium cement
- cement
- pumping
- easy
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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
- 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
- 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
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- 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 present invention provides a kind of early strong sulphate aluminium cement slurries and preparation method thereof being easy to pumping, can not only reduce the accumulation of industrial waste, but also can reduce the practical input of cement, reduce economic cost.The preparation method of the early strong sulphate aluminium cement slurry provided by the present invention for being easy to pumping, it is characterised in that：Using sulphate aluminium cement as base-material, as modifying agent, lithium carbonate forms high-calcium fly ass as modified conditioning agent mixture, wherein sulphate aluminium cement, high-calcium fly ass, lithium carbonate mass ratio be followed successively by 75~85：15~25：0.01~0.025.This method can significantly shorten initial set and the final setting time of sulphate aluminium cement cement, and will not excessively influence the fluidity of cement, additionally it is possible to sufficiently promote the secondary reaction of hydration of high-calcium fly ass, effectively increase the compression strength of sulphoaluminate cement base material.
Description
Technical field
The invention belongs to cement performance regulation technology fields, and in particular to be easy to the early strong sulphate aluminium cement slurry of pumping
And preparation method thereof.
Technical background
Sulphate aluminium cement is the raw material proper composition, by calcining gained with anhydrous calcium sulphoaluminate and dicalcium silicate
For the clinker of main mineral constituent, admix that the suitable gypsum of different amounts of lime stone is common levigate to be made.It is answered according to special
Different purposes and use environment can form the aluminium sulfate water of different cultivars by the dosage of adjusting lime stone and gypsum
Mud.For this purpose, sulphate aluminium cement there are many changeabilities, the cement of different function property is produced by adjusting these composition materials
And concrete.
However some disadvantages of sulphate aluminium cement limit its extensive use, and if hydration heat is concentrated, fluidity damage
The problems such as mistake is very fast, and setting time is not easy to control and slurry is uneven, makes it difficult to meet construction work construction process requirement.
For this purpose, researcher has done a large amount of careful researchs both at home and abroad, and additive is weight indispensable in modern cement concrete
One of component is wanted, is to improve a kind of essential method of cement.The accumulation of flyash not only land occupation, can also cause environment
Pollution, so having very overall situation and economic benefits for the research and utilization of flyash.
Invention content
Present invention aims at a kind of early strong sulphate aluminium cement slurry and preparation method thereof being easy to pumping is provided, both may be used
The accumulation of industrial waste is reduced, and the practical input of cement can be reduced, reduces economic cost.
The present invention to achieve the goals above, uses following scheme：
<Slurry>
The present invention provides a kind of early strong sulphate aluminium cement slurry being easy to pumping, which is characterized in that includes：Aluminium sulfate
Cement, high-calcium fly ass and lithium carbonate, wherein sulphate aluminium cement, high-calcium fly ass, lithium carbonate mass ratio be followed successively by 75
~85：15~25：0.01~0.025.
Preferably, the early strong sulphate aluminium cement slurry provided by the invention for being easy to pumping can also have following characteristics：
The calcium oxide content of high-calcium fly ass is more than 10wt.%, and free calcium oxide content is less than 4wt.%.
Preferably, the early strong sulphate aluminium cement slurry provided by the invention for being easy to pumping can also have following characteristics：
Sulphate aluminium cement, high-calcium fly ass, lithium carbonate mass ratio be followed successively by 80：20：0.025.
Preferably, the early strong sulphate aluminium cement slurry provided by the invention for being easy to pumping can also have following characteristics：
The water-cement ratio of early strong sulphate aluminium cement slurry is 0.6.
<Method>
The present invention also provides a kind of preparation methods for the early strong sulphate aluminium cement slurry being easy to pumping, it is characterised in that：
Using sulphate aluminium cement as base-material, high-calcium fly ass as modifying agent, lithium carbonate as modified conditioning agent, mixed with water and
It is followed successively by 75~85 at the mass ratio of, wherein sulphate aluminium cement, high-calcium fly ass, lithium carbonate：15~25：0.01~
0.025。
Preferably, the preparation method of the early strong sulphate aluminium cement slurry provided by the invention for being easy to pumping can also have
Following characteristics：The calcium oxide content of high-calcium fly ass is more than 10wt.%, and free calcium oxide content is less than 4wt.%.
Preferably, the preparation method of the early strong sulphate aluminium cement slurry provided by the invention for being easy to pumping can also have
Following characteristics：In early strong sulphate aluminium cement slurry, the mass ratio of sulphate aluminium cement and water is 75~85：60.
Preferably, the preparation method of the early strong sulphate aluminium cement slurry provided by the invention for being easy to pumping can also have
Following characteristics：Sulphate aluminium cement, high-calcium fly ass, lithium carbonate, water mass ratio be followed successively by 80：20：0.025：60.
The effect of invention
The early strong sulphate aluminium cement slurry and preparation method thereof provided by the present invention for being easy to pumping, can significantly contract
The initial set of short sulphate aluminium cement cement and final setting time, while will not excessively influence the fluidity of cement, additionally it is possible to fully promote
Into the secondary reaction of hydration of high-calcium fly ass, effectively increase the compression strength of sulphoaluminate cement base material.The present invention is protecting
The condensation hardening that cement slurry is rapidly promoted under the premise of card cement fluidity, makes cement have good working performance, simultaneously
The incorporation of high-calcium fly ass can not only reduce the accumulation of industrial waste, but also can reduce the practical input of cement, reduce economic cost.
Description of the drawings
Fig. 1 is that the lithium carbonate involved in the embodiment of the present invention one is solidifying to sulphate aluminium cement-flyash composite gelled material
Tie the influence situation schematic diagram of time；
Lithium carbonates of the Fig. 2 involved in the embodiment of the present invention one is at the beginning of sulphate aluminium cement-flyash composite gelled material
The influence situation schematic diagram of beginning fluidity；
Fig. 3 is that the lithium carbonate involved in the embodiment of the present invention one is anti-to sulphate aluminium cement-flyash composite gelled material
The influence situation schematic diagram of Compressive Strength；
Fig. 4 is that the lithium carbonate involved in the embodiment of the present invention two is solidifying to sulphate aluminium cement-flyash composite gelled material
Tie the influence situation schematic diagram of time；
Lithium carbonates of the Fig. 5 involved in the embodiment of the present invention two is at the beginning of sulphate aluminium cement-flyash composite gelled material
The influence situation schematic diagram of beginning fluidity；
Fig. 6 is that the lithium carbonate involved in the embodiment of the present invention two is anti-to sulphate aluminium cement-flyash composite gelled material
The influence situation schematic diagram of Compressive Strength.
In Fig. 2~3 and 5~6, C represents blank group, and N represents incorporation 0.0125wt.% lithium carbonates, and L represents incorporation
0.025wt.% lithium carbonates.
Specific implementation mode
Below in conjunction with attached drawing to the early strong sulphate aluminium cement slurry and preparation method thereof of the present invention for being easy to pumping
Specific embodiment be described in detail.
<Embodiment one>
Sulphate aluminium cement accounts for the 80% of cementitious material gross mass, and flyash accounts for the 20% of cementitious material gross mass, mixes outside
The lithium carbonate (chemically pure reagent) of 0.0125wt.%；Lithium carbonate is uniformly mixed with water first, then pours into cementitious material, is placed in water
Four minutes are stirred slowly on cement paste blender, test initial set and the final setting time of cement slurry, fluidity, while testing cement slurry
Compression strength within 28 day age.
As shown in Figures 1 to 3, when lithium carbonate volume is 0.0125wt.%, the initial set of cement slurry and final setting time are apparent
Shorten, cement slurry fluidity is slightly reduced (fluidity influences very small), while the compression strength in 28 day age persistently increases
It is long.
<Embodiment two>
Sulphate aluminium cement accounts for the 80% of cementitious material gross mass, and flyash accounts for the 20% of cementitious material gross mass, mixes outside
The lithium carbonate (chemically pure reagent) of 0.025wt.%；Lithium carbonate is uniformly mixed with water first, then pours into cementitious material, is placed in cement
Four minutes are stirred slowly on net slurry blender, test initial set and the final setting time of cement slurry, fluidity, while testing cement slurry and existing
Compression strength in 28 day age.
Test case：As shown in Figs. 4-6, when lithium carbonate volume is 0.025wt.%, the initial set and final set of cement slurry
Time is obviously shortened, and cement slurry fluidity is slightly reduced (fluidity influences very small), while the pressure resistance in 28 day age
Spend sustainable growth.
Above example is only the illustration done to technical solution of the present invention.It is according to the present invention to be easy to pump
Early strong sulphate aluminium cement slurry and preparation method thereof be not merely defined in described content in the embodiment above, and
It is to be subject to claim limited range.What those skilled in the art of the invention were done on the basis of the embodiment appoints
What modify or supplement or equivalence replacement, all in the claim range claimed of the present invention.
Claims (8)
1. a kind of early strong sulphate aluminium cement slurry being easy to pumping, which is characterized in that include：
Sulphate aluminium cement, high-calcium fly ass and lithium carbonate,
Wherein, the sulphate aluminium cement, the high-calcium fly ass, the lithium carbonate mass ratio be followed successively by 75~85：15~
25：0.01~0.025.
2. the early strong sulphate aluminium cement slurry according to claim 1 for being easy to pumping, it is characterised in that：
Wherein, the calcium oxide content of the high-calcium fly ass is more than 10wt.%, and free calcium oxide content is less than 4wt.%.
3. the early strong sulphate aluminium cement slurry according to claim 1 for being easy to pumping, it is characterised in that：
Wherein, the sulphate aluminium cement, the high-calcium fly ass, the lithium carbonate mass ratio be followed successively by 80：20：0.025.
4. the early strong sulphate aluminium cement slurry according to claim 1 for being easy to pumping, it is characterised in that：
Wherein, the water-cement ratio of the morning strong sulphate aluminium cement slurry is 0.6.
5. a kind of preparation method for the early strong sulphate aluminium cement slurry being easy to pumping, it is characterised in that：
Using sulphate aluminium cement as base-material, high-calcium fly ass is mixed as modified conditioning agent with water as modifying agent, lithium carbonate
It forms,
Wherein, the sulphate aluminium cement, the high-calcium fly ass, the lithium carbonate mass ratio be followed successively by 75~85：15~
25：0.01~0.025.
6. the preparation method of the early strong sulphate aluminium cement slurry according to claim 5 for being easy to pumping, it is characterised in that：
Wherein, the calcium oxide content of the high-calcium fly ass is more than 10wt.%, and free calcium oxide content is less than 4wt.%.
7. the preparation method of the early strong sulphate aluminium cement slurry according to claim 5 for being easy to pumping, it is characterised in that：
Wherein, in the morning strong sulphate aluminium cement slurry, the mass ratio of the sulphate aluminium cement and the water is 75~85：
60。
8. the preparation method of the early strong sulphate aluminium cement slurry according to claim 5 for being easy to pumping, it is characterised in that：
Wherein, the sulphate aluminium cement, the high-calcium fly ass, the lithium carbonate, the water mass ratio be followed successively by 80：
20：0.025：60.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810360512.7A CN108409267A (en) | 2018-04-20 | 2018-04-20 | It is easy to the early strong sulphate aluminium cement slurry and preparation method thereof of pumping |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810360512.7A CN108409267A (en) | 2018-04-20 | 2018-04-20 | It is easy to the early strong sulphate aluminium cement slurry and preparation method thereof of pumping |
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| CN108409267A true CN108409267A (en) | 2018-08-17 |
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| CN201810360512.7A Pending CN108409267A (en) | 2018-04-20 | 2018-04-20 | It is easy to the early strong sulphate aluminium cement slurry and preparation method thereof of pumping |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103496923A (en) * | 2013-09-17 | 2014-01-08 | 湖北省保康至宜昌高速公路建设指挥部 | Rapid setting early-strength anti-aqueous dispersion grouting material and preparation method thereof |
-
2018
- 2018-04-20 CN CN201810360512.7A patent/CN108409267A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103496923A (en) * | 2013-09-17 | 2014-01-08 | 湖北省保康至宜昌高速公路建设指挥部 | Rapid setting early-strength anti-aqueous dispersion grouting material and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 卢来运，刘泽军著: "《粉煤灰混凝土在桥梁下部构造中的应用技术》", 31 July 2016, 郑州：黄河水利出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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