CN108840585A - A kind of low temperature preparation method of concrete anti-cracking agent - Google Patents
A kind of low temperature preparation method of concrete anti-cracking agent Download PDFInfo
- Publication number
- CN108840585A CN108840585A CN201810819919.1A CN201810819919A CN108840585A CN 108840585 A CN108840585 A CN 108840585A CN 201810819919 A CN201810819919 A CN 201810819919A CN 108840585 A CN108840585 A CN 108840585A
- Authority
- CN
- China
- Prior art keywords
- raw material
- low temperature
- concrete anti
- cracking agent
- calcareous
- 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.)
- Granted
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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
- C04B40/0046—Premixtures of ingredients characterised by their processing, e.g. sequence of mixing the ingredients when preparing the premixtures
-
- 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
- C04B28/04—Portland 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
Abstract
The invention discloses a kind of low temperature preparing methods of concrete anti-cracking agent, include the following steps：(1) raw material is put into planetary ball mill mix it is levigate；Wherein, raw material includes aluminium calcareous raw material, aluminum raw material, calcareous raw material, industrial gypsum；(2) step (1) mixed raw material is pressed into cake, be placed in high-temperature electric resistance furnace, in 700 DEG C of -1200 DEG C of calcinings of temperature, then take out chilling；(3) product obtained step (2) is levigate, obtains aluminium sulfate antimitotic agent.The present invention is direct using containing intermediate product phase CA (calcium aluminate), CA2The Common Waste of (Calcium dialuminate) and other aluminates makees raw material, and raw material does not need modified or other processing and improves the utilization rate of raw material while saving processing cost.Preceding period cost is greatly reduced, while solving environmental problem caused by industrial residue.
Description
Technical field
The invention belongs to field of material technology, and in particular to a kind of using intermediate product low temperature preparation concrete anti-cracking agent
Preparation method.
Background technique
Additive is considered as the 5th kind of component of concrete, and additive is mixed in concrete can improve its application
Can, it improve strength character and endurance quality.Concrete admixture is many kinds of, and normal incorporation, can be to mixed in 1%-10%
The performance for coagulating soil is affected.Therefore its variety selection, application technology, quality control more compared with other component materials of concrete
It is important.Concrete anti-cracking agent has compensating concrete drying shrinkage and air-free concrete, improves concrete permeability resistance effect, in building work
Be mainly used for waterproof and the aspect of cracking resistance two in journey, now using more occasion be for prepare high-grade water-proof concrete and
Expansion joint or post-cast strip spacing is appropriately extended, is shunk with slowing down the structure temperature of concrete.Calcium sulfoaluminate minerals have high morning
Phase intensity and high later strength, there are also it is impervious, freeze proof, anti-corrosion the advantages that；Calcium sulphoaluminate hydration activity is very high simultaneously, early stage energy
Form a large amount of entringite (AFt), C-S-H and aluminium hydroxide (AH3) gel, greatly improve the early strength of cement.Sulphur aluminium
Sour calcium type concrete anti-cracking agent, not sodium salt, alkali-aggregate reaction will not be caused by being added in concrete, and durability is good, swollen
Swollen, cracking resistance, waterproof performance are stablized, and later strength persistently rises.Common aluminium sulfate antimitotic agent essential mineral is C4A3$ and C2S,
There are also a small amount of free gypsum, and formation temperature is about at 1300-1380 DEG C, and within this temperature range, gypsum has sulphur emissions,
It pollutes, therefore under the big pattern of environmental protection, the formation temperature for reducing sulphoaluminate phase is necessary.
The existing method for preparing calcium sulphoaluminate, such as application No. is 201510066039.8 Chinese patent applications, open
A kind of preparation method of sulphate aluminium cement carries out secondary clacining according to the calcination temperature and soaking time of setting, and program is multiple
It is miscellaneous, and calcination temperature is high (1250 DEG C -1400 DEG C) for the first time；Secondary heat preservation, energy consumption are big.
Application No. is 201510502345.1 Chinese patent applications, disclose a kind of without using lime stone low temperature preparation shellfish
Li Te-calcium sulphoaluminate method, calcination temperature are 800-1150 DEG C, need first hydrothermal synthesis presoma, then carry out subsequent forge
It burns, complex procedures.
To sum up, the prior art has the disadvantages that：
1) calcination temperature is higher, and the energy consumption for inevitably resulting in production improves and waste；
2) decomposition for leading to sulfate and aluminium sulfate in high-temperature calcination, has SO2Discharge, cause sulphur dirty
Dye；
3) existing hydrothermal synthesis low temperature calcination technology, needs secondary clacining, and program is complicated, it is difficult to industrial production.
Summary of the invention
The object of the present invention is to provide a kind of low temperature preparation method of concrete anti-cracking agent, with overcome it is above-mentioned in the prior art
Complex process, the high deficiency of energy consumption, and can be realized being effectively treated for waste residue.
To achieve the above object, the technical solution adopted by the present invention is：
A kind of low temperature preparation method of concrete anti-cracking agent, includes the following steps：
(1) raw material is put into planetary ball mill mix it is levigate；Wherein, raw material include aluminium calcareous raw material, aluminum raw material,
Calcareous raw material, industrial gypsum；
(2) step (1) mixed raw material is pressed into cake, be placed in high-temperature electric resistance furnace, forged at 700 DEG C -1200 DEG C of temperature
It burns, then takes out chilling；
(3) product obtained step (2) is levigate, obtains aluminium sulfate antimitotic agent.
In the step (1), the mass ratio of raw material is：Aluminium calcareous raw material：Aluminum raw material：Calcareous raw material：Industrial gypsum=
15.73-29.05：33.82-48.5：27.62-40.13：10.08-18.62.
In the step (1), aluminium calcareous raw material is high alumina cement, CaO-Al2O3The one of base refining slag or waste refractory materials
Kind is a variety of；Aluminum raw material is bauxite；Calcareous raw material is lime stone；Industrial gypsum is the industrial waste gypsums such as desulfurized gypsum.
In the step (2), mixed raw material is pressed into cake under 2-6MPa pressure.
In the step (2), 1h-3h is kept the temperature after 700 DEG C -1200 DEG C are warming up in high-temperature electric resistance furnace.
In the step (3), the levigate square hole screen that can be all 80 μm by aperture to its particle, specific surface area reaches
To 350~420m2/Kg。
Beneficial effect：The present invention is direct using containing intermediate product phase CA (calcium aluminate), CA2(Calcium dialuminate) and its
The Common Waste of his aluminate makees raw material, and raw material does not need modified or other processing, while saving processing cost, improves
The utilization rate of raw material.Preceding period cost is greatly reduced, while solving environmental problem caused by industrial residue.Also, the present invention
It does not need to carry out secondary clacining, a large amount of carbon dioxide and sulfur dioxide will not be generated, increase environmental pressure, on the other hand calcine
Temperature is low, and then low energy consumption.Therefore the present invention is a kind of low-carbon, green preparation method.
Detailed description of the invention
Fig. 1 is the XRD analysis figure of the product of embodiment 1；
Fig. 2 is the SEM figure of the product of embodiment 1；
Fig. 3 is the XRD analysis figure of the product of embodiment 4；
Fig. 4 is the SEM figure of the product of embodiment 4.
Specific embodiment
A kind of low temperature preparation method of concrete anti-cracking agent of the invention, includes the following steps：
(1) raw material is put into planetary ball mill mix it is levigate；Wherein, raw material include aluminium calcareous raw material, aluminum raw material,
Calcareous raw material, industrial gypsum；The mass ratio of raw material is：Aluminium calcareous raw material：Aluminum raw material：Calcareous raw material：Industrial gypsum=
15.73-29.05：33.82-48.5：27.62-40.13：10.08-18.62；Aluminium calcareous raw material is high alumina cement, CaO-Al2O3
Base refining slag or waste refractory materials it is one or more；Aluminum raw material is bauxite；Calcareous raw material is lime stone；Industrial gypsum
For industrial waste gypsums such as desulfurized gypsums；
(2) step (1) mixed raw material is pressed into cake under 2-6MPa pressure, is placed in high-temperature electric resistance furnace and is warming up to
1h-3h is kept the temperature after 700 DEG C -1200 DEG C, is calcined, is then taken out chilling；
(3) product obtained step (2) is levigate to its particle to be all 80 μm of square hole screen by aperture, compare
Surface area reaches 350~420m2/ Kg obtains aluminium sulfate antimitotic agent.
Table 1 is the main chemical compositions of raw material of the present invention.
1 raw material main chemical compositions (wt%) of table
Below according to specific embodiment, the present invention will be further described.
Embodiment 1
Raw material proportioning is as shown in table 2：
2 embodiment of table, 1 raw material proportioning
Specific step is as follows：
1) mixing：Raw material is weighed by the proportion of table 2 to be placed in planetary mills, is ground 120min, is pressed under 2MPa pressure
Cake；
2) it calcines：It is placed in high-temperature electric resistance furnace and is warming up to 700 DEG C, and keep the temperature 3h, chilling；
3) it is sieved：The square hole screen that grinding can be all 80 μm by aperture to its particle, carries out XRD test and SEM
Analysis, such as Fig. 1 and Fig. 2 (CA, CA2, high alumina cement is interphase).
Embodiment 2
Specific step is as follows：
1) mixing：Raw material is weighed by the proportion of table 2 to be placed in planetary mills, is ground 120min, is pressed under 2MPa pressure
Cake；
2) it calcines：It is placed in high-temperature electric resistance furnace and is warming up to 700 DEG C, and keep the temperature 3h, chilling；
3) it is sieved：The square hole screen that grinding can be all 80 μm by aperture to its particle, specific surface area 350m2/ Kg,
Obtain antimitotic agent；
4) strength test：The antimitotic agent that the step 3) of cement quality 5% obtains is mixed in ordinary portland cement, respectively
3d, the anti-folding of 28d, compression strength performance test and cracking resistance test are carried out, as shown in table 3.
3 embodiment of table, 2 strength character and cracking resistance test
Embodiment 3
Raw material proportioning is as shown in table 4：
4 embodiment of table, 3 raw material proportioning
Specific step is as follows：
1) mixing：Raw material is weighed by the proportion of table 4 to be placed in planetary ball mill, 120min is ground, under 2MPa pressure
It is pressed into cake；
2) it calcines：It is placed in high-temperature electric resistance furnace and is warming up to 700 DEG C, and keep the temperature 3h, chilling；
3) it is sieved：The square hole screen that grinding can be all 80 μm by aperture to its particle, specific surface area 380m2/Kg
Obtain antimitotic agent；
4) strength test：The antimitotic agent that the step 3) of cement quality 5% obtains is mixed in ordinary portland cement, respectively
3d, the anti-folding of 28d, compression strength performance test and cracking resistance test are carried out, as shown in table 5.
5 embodiment of table, 3 strength character and cracking resistance test
Embodiment 4
Raw material proportioning is as shown in table 6：
6 embodiment of table, 4 raw material proportioning
Specific step is as follows：
1) mixing：Raw material is weighed according to the ratio to be placed in planetary ball mill, is ground 120min, is pressed under 6MPa pressure
Cake；
2) it calcines：It is placed in high-temperature electric resistance furnace and is warming up to 1150 DEG C, and keep the temperature 1.5h, chilling；
3) it is sieved：Grinding to its particle can carry out XRD test and sem analysis, such as scheme all by 80 μm of square hole screens
3 and Fig. 4 (CA, CA2, waste refractory materials are interphase).
Embodiment 5
Specific step is as follows：
1) mixing：Raw material is weighed by the proportion of table 6 to be placed in planetary ball mill, 120min is ground, under 2MPa pressure
It is pressed into cake；
2) it calcines：It is placed in high-temperature electric resistance furnace and is warming up to 1200 DEG C, and keep the temperature 1h, chilling；
3) it is sieved：The square hole screen that grinding can be all 80 μm by aperture to its particle, specific surface area 420m2/ Kg,
Obtain antimitotic agent；
4) strength test：The antimitotic agent that the step 3) of cement quality 5% obtains is mixed in ordinary portland cement, respectively
3d, the anti-folding of 28d, compression strength performance test and cracking resistance test are carried out, as shown in table 7.
7 embodiment of table, 5 strength character and cracking resistance test
Embodiment 6
Specific implementation step is as follows：
By aluminium sulfate antimitotic agent obtained in embodiment 5 according to the main property in 5% incorporation concrete of cement quality
Energy testing result is as shown in table 8.
8 embodiment of table, 6 cracking resistance index
The result shows that：By XRD analysis at 700-1200 DEG C, keeps the temperature and form required mineral C under 1-3h4A3$ and C2S；It mixes
Enter the strength of cement performance of antimitotic agent, the anti-folding of 28d is 7.25MPa, resistance to compression 56.59MPa；Mix mass percent 5% or so
Antimitotic agent, cracking resistance, waterproof resistance is improved.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (6)
1. a kind of low temperature preparation method of concrete anti-cracking agent, it is characterised in that：Include the following steps：
(1) raw material is put into planetary ball mill mix it is levigate；Wherein, raw material include aluminium calcareous raw material, it is aluminum raw material, calcareous
Raw material, industrial gypsum；
(2) step (1) mixed raw material is pressed into cake, be placed in high-temperature electric resistance furnace, in 700 DEG C of -1200 DEG C of calcinings of temperature, so
After take out chilling；
(3) product obtained step (2) is levigate, obtains aluminium sulfate antimitotic agent.
2. the low temperature preparation method of concrete anti-cracking agent according to claim 1, it is characterised in that：In the step (1),
The mass ratio of raw material is：Aluminium calcareous raw material：Aluminum raw material：Calcareous raw material：Industrial gypsum=15.73-29.05：33.82-48.5：
27.62-40.13：10.08-18.62.
3. the low temperature preparation method of concrete anti-cracking agent according to claim 1 or 2, it is characterised in that：The step (1)
In, aluminium calcareous raw material is high alumina cement, CaO-Al2O3Base refining slag or waste refractory materials it is one or more；Aluminum raw material is
Bauxite；Calcareous raw material is lime stone；Industrial gypsum is industrial waste gypsum.
4. the low temperature preparation method of concrete anti-cracking agent according to claim 1, it is characterised in that：In the step (2),
Mixed raw material is pressed into cake under 2-6MPa pressure.
5. the low temperature preparation method of concrete anti-cracking agent according to claim 1, it is characterised in that：In the step (2),
1h-3h is kept the temperature after being warming up to 700 DEG C -1200 DEG C in high-temperature electric resistance furnace.
6. the low temperature preparation method of concrete anti-cracking agent according to claim 1, it is characterised in that：In the step (3),
The levigate square hole screen that can be all 80 μm by aperture to its particle, specific surface area reach 350~420m2/Kg。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810819919.1A CN108840585B (en) | 2018-07-24 | 2018-07-24 | Low-temperature preparation method of concrete anti-cracking agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810819919.1A CN108840585B (en) | 2018-07-24 | 2018-07-24 | Low-temperature preparation method of concrete anti-cracking agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108840585A true CN108840585A (en) | 2018-11-20 |
| CN108840585B CN108840585B (en) | 2021-07-13 |
Family
ID=64192084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810819919.1A Active CN108840585B (en) | 2018-07-24 | 2018-07-24 | Low-temperature preparation method of concrete anti-cracking agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108840585B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113024144A (en) * | 2021-03-20 | 2021-06-25 | 段姝瑶 | Concrete anti-cracking agent and preparation process thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0812811A1 (en) * | 1996-06-10 | 1997-12-17 | Cementos Mexicanos, S.A. de C.V. | Hydraulic cement with an accelerated development of high strength |
| CN103496869A (en) * | 2013-09-26 | 2014-01-08 | 中铁十五局集团有限公司 | Expansive agent for preventing concrete from cracking |
| CN105060744A (en) * | 2015-08-14 | 2015-11-18 | 盐城工学院 | Preparation method of sulfoaluminate Belite cement |
| CN106904848A (en) * | 2017-04-01 | 2017-06-30 | 盐城工学院 | The method and its product of easy fired belite calcium sulphoaluminate sulphur calcium silicate cement |
-
2018
- 2018-07-24 CN CN201810819919.1A patent/CN108840585B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0812811A1 (en) * | 1996-06-10 | 1997-12-17 | Cementos Mexicanos, S.A. de C.V. | Hydraulic cement with an accelerated development of high strength |
| CN103496869A (en) * | 2013-09-26 | 2014-01-08 | 中铁十五局集团有限公司 | Expansive agent for preventing concrete from cracking |
| CN105060744A (en) * | 2015-08-14 | 2015-11-18 | 盐城工学院 | Preparation method of sulfoaluminate Belite cement |
| CN106904848A (en) * | 2017-04-01 | 2017-06-30 | 盐城工学院 | The method and its product of easy fired belite calcium sulphoaluminate sulphur calcium silicate cement |
Non-Patent Citations (1)
| Title |
|---|
| 乌效鸣等: "《钻井液与岩土工程浆液》", 30 June 2002, 中国地质大学出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113024144A (en) * | 2021-03-20 | 2021-06-25 | 段姝瑶 | Concrete anti-cracking agent and preparation process thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108840585B (en) | 2021-07-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108793785B (en) | Low-temperature preparation method of sulfosilicate-belite-sulphoaluminate cement | |
| CN107021654B (en) | A kind of sulphur calcium silicates sulphate aluminium cement and preparation method thereof | |
| WO2021190045A1 (en) | High-iron and low-calcium silicate cement and preparation method therefor | |
| CN110078394A (en) | Low temperature preparation sulphur calcium silicates-belite sulphoaluminate cement clinker method | |
| CN108947449A (en) | A kind of ardealite ultra-sulphate cement and preparation method thereof | |
| CN106116189B (en) | A kind of no first-hand datum lithium slag composite gelled material | |
| CN101023043A (en) | High belite-containing sulphoaluminous clinker, method for the production and the use thereof for preparing hydraulic binders | |
| CN105330182A (en) | White fast-setting, fast-hardening and high-belite sulphoaluminate cement clinker, and application and production technology thereof | |
| CN103613293A (en) | Minimum inflation high magnesium moderate heat cement, production method therefor and applications thereof | |
| CN108298838B (en) | Portland cement clinker and preparation method and application thereof | |
| CN104609750A (en) | Sulphoaluminate cement and preparation method thereof | |
| CN106904848B (en) | The method and its product of easy fired belite-calcium sulphoaluminate-sulphur calcium silicate cement | |
| CN112608047B (en) | Modified sulphoaluminate cement and preparation method and application thereof | |
| He et al. | Synergistic use of electrolytic manganese residue and barium slag to prepare belite-sulphoaluminate cement study | |
| CN109369044B (en) | Sulphoaluminate cement and preparation method thereof | |
| CN111847936A (en) | Novel phosphate cement and preparation method thereof | |
| CN106698986A (en) | Production method of sulfoaluminate cement clinker | |
| CN105314902A (en) | Method for calcining belite sulphoaluminate cement clinker by totally utilizing industrial waste residues | |
| CN108675657A (en) | A method of preparing silicate-aluminium sulfate compound system clinker using waste residue | |
| CN106746783A (en) | Portland cement | |
| CN110066129A (en) | A kind of calcium and magnesium composite expanding agent and preparation method thereof | |
| CN110194604A (en) | Tricalcium silicate-sulphur calcium silicates-sulphate aluminium cement and its low temperature preparation method | |
| CN102417312B (en) | Resource utilization method for chrome-containing aluminum sludge | |
| CN108314344A (en) | A kind of sulphur calcium silicate types phosphorus sulphoaluminate cement clinker | |
| CN104761160B (en) | Preparation method for modified slag powder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |