CN112851185A - Retarder for adjusting initial setting time of sulphoaluminate cement and preparation method and use method thereof - Google Patents
Retarder for adjusting initial setting time of sulphoaluminate cement and preparation method and use method thereof Download PDFInfo
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- CN112851185A CN112851185A CN202110137381.8A CN202110137381A CN112851185A CN 112851185 A CN112851185 A CN 112851185A CN 202110137381 A CN202110137381 A CN 202110137381A CN 112851185 A CN112851185 A CN 112851185A
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- sulphoaluminate cement
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- 239000004568 cement Substances 0.000 title claims abstract description 97
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000002360 preparation method Methods 0.000 title abstract description 9
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000000843 powder Substances 0.000 claims abstract description 20
- 239000010881 fly ash Substances 0.000 claims abstract description 19
- PUKLDDOGISCFCP-JSQCKWNTSA-N 21-Deoxycortisone Chemical compound C1CC2=CC(=O)CC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@@](C(=O)C)(O)[C@@]1(C)CC2=O PUKLDDOGISCFCP-JSQCKWNTSA-N 0.000 claims abstract description 18
- FCYKAQOGGFGCMD-UHFFFAOYSA-N Fulvic acid Natural products O1C2=CC(O)=C(O)C(C(O)=O)=C2C(=O)C2=C1CC(C)(O)OC2 FCYKAQOGGFGCMD-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229940095100 fulvic acid Drugs 0.000 claims abstract description 18
- 239000002509 fulvic acid Substances 0.000 claims abstract description 18
- 239000000292 calcium oxide Substances 0.000 claims abstract description 17
- 235000012255 calcium oxide Nutrition 0.000 claims abstract description 17
- 238000002156 mixing Methods 0.000 claims description 17
- 239000002245 particle Substances 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 3
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 3
- 239000004571 lime Substances 0.000 claims description 3
- 239000010754 BS 2869 Class F Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 7
- 238000004134 energy conservation Methods 0.000 abstract description 5
- 230000007774 longterm Effects 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 2
- 239000004566 building material Substances 0.000 abstract description 2
- 229910052799 carbon Inorganic materials 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 abstract description 2
- 230000007306 turnover Effects 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract 1
- 238000005259 measurement Methods 0.000 description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 238000012360 testing method Methods 0.000 description 9
- 238000006703 hydration reaction Methods 0.000 description 7
- 230000036571 hydration Effects 0.000 description 6
- 239000000654 additive Substances 0.000 description 5
- 230000000996 additive effect Effects 0.000 description 5
- 239000011398 Portland cement Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229910001653 ettringite Inorganic materials 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 235000010755 mineral Nutrition 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910021653 sulphate ion Inorganic materials 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- JHLNERQLKQQLRZ-UHFFFAOYSA-N calcium silicate Chemical compound [Ca+2].[Ca+2].[O-][Si]([O-])([O-])[O-] JHLNERQLKQQLRZ-UHFFFAOYSA-N 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- 235000012241 calcium silicate Nutrition 0.000 description 1
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/20—Retarders
- C04B2103/22—Set retarders
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to a retarder for adjusting initial setting time of sulphoaluminate cement, a preparation method and a use method thereof, belonging to the technical field of building materials. The retarder comprises the following components in parts by weight: 3-8 parts of quicklime powder, 5-12 parts of fulvic acid and 3-5 parts of fly ash. The retarder overcomes the problem that the initial setting time of the sulphoaluminate cement is not easy to adjust, has little influence on the interval between the initial setting time and the final setting time, ensures that the cement material can meet the requirement of construction time and the requirement of construction period, accelerates the turnover of a mould and shortens the maintenance time, also has the influence on the long-term property and the construction process of the cement material, can more fully exert the characteristics of low carbon, energy conservation and high efficiency of the sulphoaluminate cement, and can become the most powerful high-performance supplementary material of the sulphoaluminate cement under the high pressure of future energy conservation and emission reduction. The preparation method is simple, the raw material source is wide, and the method is suitable for expanded production.
Description
Technical Field
The invention belongs to the technical field of building materials, and particularly relates to a retarder for adjusting initial setting time of sulphoaluminate cement, and a preparation method and a use method thereof.
Background
The sulphoaluminate cement is novel cement mainly comprising anhydrous calcium sulphoaluminate and dicalcium silicate as main minerals, has specific performance and meets the social development requirements of energy conservation and environmental protection. The sulphoaluminate cement has the advantages of quick setting, early strength, permeability resistance, frost resistance, corrosion resistance, low alkalinity and the like, but has higher production cost, difficult control of setting time, unstable later strength and even reverse shrinkage phenomenon, and influences the application to a certain extent. Because the workability is an important performance of cement-based material engineering application, the sulphoaluminate cement has a high setting speed, the initial setting time is about 25min, and although the sulphoaluminate cement has a high setting and hardening speed for specific engineering, such as rush repair engineering, the initial setting time of the sulphoaluminate cement limits the construction operation time for most engineering applications, thereby bringing great difficulty to engineering construction. Therefore, it is necessary to properly adjust the setting and hardening speed of the sulfoaluminate cement based on the engineering properties.
In order to meet the actual engineering requirements, the setting time of the sulphoaluminate cement has certain adjustability, and an additive must be used, wherein the retarder can obviously delay the hydration rate of the cement, and the retarder is an important technical measure for adjusting the setting time of the cement. Although the application and research of the additive are extremely common for Portland cement, the mineral clinker compositions of the sulphoaluminate cement and the Portland cement are completely different, and the sulphoaluminate cement has the characteristics of more concentrated hydration heat release, high setting and hardening speed, short initial setting and final setting time, high early strength and the like in the hydration process, so that the additive which is mature and applied to the common Portland cement cannot be completely and directly applied to a sulphoaluminate cement system, the selectable range of the additive suitable for the sulphoaluminate cement is smaller, and the compatibility problem of the additive and the whole sulphoaluminate cement system is more complex than that of the Portland cement system, so the problem of how to control the setting time of the sulphoaluminate cement is not completely solved. Therefore, it is necessary to consider a material suitable for adjusting the setting time of the sulfoaluminate cement.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a retarder for adjusting the initial setting time of sulphoaluminate cement; the second purpose is to provide a preparation method of the retarder for adjusting the initial setting time of the sulphoaluminate cement; the third purpose is to provide a use method of the retarder for adjusting the initial setting time of the sulphoaluminate cement.
In order to achieve the purpose, the invention provides the following technical scheme:
1. the retarder for adjusting the initial setting time of the sulphoaluminate cement comprises the following components in parts by weight: 3-8 parts of quicklime powder, 5-12 parts of fulvic acid and 3-5 parts of fly ash.
Preferably, the quicklime powder is more than II-grade calcareous lime powder, and the particle size of the quicklime powder is less than 2.36 mm.
Preferably, the fulvic acid has a specific surface area of 300m or more2/kg。
Preferably, the fly ash is F-type fly ash with more than II grade, meets the requirement of GB/T1596-2017, and has fineness requirement that the screen residue of a 45-micron square-hole sieve is less than 15%.
2. The preparation method of the retarder for adjusting the initial setting time of the sulphoaluminate cement comprises the following steps: and (3) weighing quicklime powder, fulvic acid and fly ash according to the dosage ratio, and mixing uniformly.
3. The application method of the retarder for adjusting the initial setting time of the sulphoaluminate cement comprises the following steps: and adding the retarder into the sulphoaluminate cement, and uniformly mixing.
Preferably, the mass ratio of the retarder to the sulphoaluminate cement is 11-25: 100.
The invention has the technical characteristics that: the structure of fulvic acid in the retarder contains a large number of groups such as phenolic hydroxyl groups, carbonyl groups and the like, and the fulvic acid can be adsorbed on the surface of sulphoaluminate cement particles to form a hydrated wrapping film, but the fulvic acid has lower molecular weight, so that the wrapping film formed in a certain mixing amount range is not compact, and the sulphoaluminate cement can be made to have a good water solubilityThe hydration of the sulphate aluminium cement is slow and the fulvic acid does not participate in the hydration of the sulphate aluminium cement and therefore does not affect the long term strength of the cement. Meanwhile, the quicklime powder and the fly ash can further promote hydration reaction, wherein the quicklime powder can adjust Ca in the system2+At a concentration of (C) to cause the liquid phase of the system to react with Ca2+The related ion concentration product reaches the supersaturation degree required by the ettringite crystallization, thereby precipitating the ettringite crystals, increasing the concentration difference of the internal and external liquid phases of the cement particle membrane, increasing the driving force of water molecules diffusing into the membrane, accelerating the diffusion of the water molecules into the coating membrane, and further promoting the hydration of the cement. Meanwhile, the long-term performance of the cement can be improved by the fly ash due to the aggregate effect and the volcanic ash effect. By optimizing the dosage and proportion of each component in the retarder and integrating the mutual action of each component, the requirement of setting time can be met.
The invention has the beneficial effects that: the invention provides a retarder for adjusting initial setting time of sulphoaluminate cement, a preparation method and a use method thereof, and the retarder has the following advantages:
1) the difficult problem that the initial setting time of the sulphoaluminate cement is not easy to adjust is overcome, the interval between the initial setting time and the final setting time is not greatly influenced, so that the cement material can meet the requirements of construction time and construction period, the turnover of the mould is accelerated, the maintenance time is shortened, and the influence on the long-term property and the construction process of the cement material is considered;
2) the retarder adopts materials with wide sources, stable quality and low cost;
3) the retarder has simple preparation process, easy control of construction quality and convenient wide application;
4) the retarder can utilize a small amount of industrial solid waste, and has good economical efficiency;
5) the retarder can more fully exert the characteristics of low carbon, energy conservation and high efficiency of the sulphoaluminate cement, so that the sulphoaluminate cement becomes the most powerful high-performance supplementary material for the sulphoaluminate cement under the future high pressure of energy conservation and emission reduction.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.
In each embodiment of the invention, the used quicklime powder is more than II-grade calcareous lime powder, and the particle size is less than 2.36 mm; the specific surface area of fulvic acid is greater than or equal to 300m2Per kg; the fly ash is F-class fly ash with more than II grade, meets the requirement of GB/T1596-2017, and has fineness requirement that the screen residue of a 45-micron square-hole sieve is less than 15%.
Example 1
The retarder for adjusting the initial setting time of the sulphoaluminate cement comprises the following components in parts by weight: 3 parts of quicklime powder, 8 parts of fulvic acid and 5 parts of fly ash.
And (3) weighing quicklime powder, fulvic acid and fly ash according to the above dosage ratio, and mixing uniformly.
Adding the retarder in the embodiment 1 into the sulphoaluminate cement according to the mass ratio of 16:100 of the retarder to the sulphoaluminate cement, uniformly mixing by adopting cement paste mixing equipment, adding water with standard consistency, uniformly mixing, measuring the setting time according to a GB/T1346-2011 cement setting time test method, taking the pure sulphoaluminate cement as a reference, and modifying the test time as follows in view of the faster setting time of the sulphoaluminate cement: the first measurement is carried out 10min after the pure sulphoaluminate cement is added with water, then the measurement is carried out once every 3min, the measurement is carried out once every 1min when the initial setting is approached, the measurement is carried out once every 2min during the period from the initial setting to the final setting for 3 times, and the measurement is carried out once every 1min later until the final setting; the test sample added with the retarder is measured for the first time at 20min after water is added, and is measured once every 5min, and the test interval from initial setting to final setting is the same as that of a control group. The following results were measured:
42.5 grade quick hardening sulphoaluminate cement (pure sulphoaluminate cement), the initial setting time is 26min, and the final setting time is 35 min.
42.5 grade quick hardening sulphoaluminate cement added with the retarder of the embodiment 1, the initial setting time is 154min, and the final setting time is 170 min.
The difference between the compressive strength and the flexural strength of the 42.5 grade quick-hardening sulphoaluminate cement added with the retarder of the embodiment 1 and the compressive strength and the flexural strength of the pure sulphoaluminate cement 1d and 3d are within +/-10 percent.
Example 2
The retarder for adjusting the initial setting time of the sulphoaluminate cement comprises the following components in parts by weight: 5 parts of quicklime powder, 5 parts of fulvic acid and 3 parts of fly ash.
And (3) weighing quicklime powder, fulvic acid and fly ash according to the above dosage ratio, and mixing uniformly.
Adding the retarder in the embodiment 2 into the sulphoaluminate cement according to the mass ratio of 13:100 of the retarder to the sulphoaluminate cement, uniformly mixing by adopting cement paste mixing equipment, adding water with standard consistency, uniformly mixing, measuring the setting time according to a GB/T1346-2011 cement setting time test method, taking the pure sulphoaluminate cement as a reference, and modifying the test time as follows in view of the faster setting time of the sulphoaluminate cement: the first measurement is carried out 10min after the pure sulphoaluminate cement is added with water, then the measurement is carried out once every 3min, the measurement is carried out once every 1min when the initial setting is approached, the measurement is carried out once every 2min during the period from the initial setting to the final setting for 3 times, and the measurement is carried out once every 1min later until the final setting; the test sample added with the retarder is measured for the first time at 20min after water is added, and is measured once every 5min, and the test interval from initial setting to final setting is the same as that of a control group. The following results were measured:
42.5 grade quick hardening sulphoaluminate cement (pure sulphoaluminate cement), the initial setting time is 26min, and the final setting time is 35 min.
42.5 grade quick hardening sulphoaluminate cement added with retarder of the example 2, the initial setting time is 141min, and the final setting time is 159 min.
The difference between the compressive strength and the flexural strength of the 42.5 grade quick-hardening sulphoaluminate cement added with the retarder of the embodiment 2 and the compressive strength and the flexural strength of the pure sulphoaluminate cement 1d and 3d are within +/-6 percent.
Example 3
The retarder for adjusting the initial setting time of the sulphoaluminate cement comprises the following components in parts by weight: 8 parts of quicklime powder, 12 parts of fulvic acid and 4 parts of fly ash.
And (3) weighing quicklime powder, fulvic acid and fly ash according to the above dosage ratio, and mixing uniformly.
Adding the retarder in the embodiment 3 into sulphoaluminate cement according to the mass ratio of 24:100 of the retarder to the sulphoaluminate cement, uniformly mixing by adopting cement paste mixing equipment, adding water with standard consistency, uniformly mixing, measuring the setting time according to a GB/T1346-2011 cement setting time test method, and taking pure sulphoaluminate cement as a reference, wherein the test time is modified as follows in view of faster setting time of the sulphoaluminate cement: the first measurement is carried out 10min after the pure sulphoaluminate cement is added with water, then the measurement is carried out once every 3min, the measurement is carried out once every 1min when the initial setting is approached, the measurement is carried out once every 2min during the period from the initial setting to the final setting for 3 times, and the measurement is carried out once every 1min later until the final setting; the test sample added with the retarder is measured for the first time at 20min after water is added, and is measured once every 5min, and the test interval from initial setting to final setting is the same as that of a control group. The following results were measured:
42.5 grade quick hardening sulphoaluminate cement (pure sulphoaluminate cement), the initial setting time is 26min, and the final setting time is 35 min.
42.5 grade quick hardening sulphoaluminate cement added with retarder of the embodiment 3, the initial setting time is 184min, and the final setting time is 194 min.
The difference between the compressive strength and the flexural strength of the 42.5 grade quick-hardening sulphoaluminate cement added with the retarder of the embodiment 3 and the pure sulphoaluminate cement 1d and 3d is within +/-5 percent.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
Claims (7)
1. The retarder for adjusting the initial setting time of the sulphoaluminate cement is characterized by comprising the following components in parts by weight: 3-8 parts of quicklime powder, 5-12 parts of fulvic acid and 3-5 parts of fly ash.
2. The retarder for adjusting the initial setting time of sulphoaluminate cement as claimed in claim 1, wherein the quicklime powder is more than II-grade calcareous lime powder, and the particle size is less than 2.36 mm.
3. The retarder for adjusting initial setting time of sulphoaluminate cement of claim 1, wherein the fulvic acid has a specific surface area of 300m or more2/kg。
4. The retarder for adjusting the initial setting time of sulphoaluminate cement as claimed in claim 1, wherein the fly ash is class-F fly ash with more than class-II, meets the requirement of GB/T1596-2017, and has fineness requirement of less than 15% of screen residue of a 45-micron square-hole screen.
5. The method for preparing the retarder for adjusting the initial setting time of the sulphoaluminate cement as claimed in any one of claims 1 to 4, wherein the method comprises the following steps: and (3) weighing quicklime powder, fulvic acid and fly ash according to the dosage ratio, and mixing uniformly.
6. The use method of the retarder for adjusting the initial setting time of sulphoaluminate cement as claimed in any one of claims 1 to 4, wherein the method comprises the following steps: and adding the retarder into the sulphoaluminate cement, and uniformly mixing.
7. The method of claim 6, wherein the mass ratio of the retarder to the sulphoaluminate cement is 11-25: 100.
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| CN202110137381.8A CN112851185B (en) | 2021-02-01 | 2021-02-01 | Retarder for adjusting initial setting time of sulphoaluminate cement and preparation method and use method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116425565A (en) * | 2022-12-13 | 2023-07-14 | 广东红墙新材料股份有限公司 | Surface retarder and preparation method thereof |
| CN116535156A (en) * | 2023-04-04 | 2023-08-04 | 东南大学 | Nano modified 3D printing high-strength concrete capable of improving pumpability and preparation method thereof |
| CN117361988A (en) * | 2023-09-11 | 2024-01-09 | 山东高速集团有限公司创新研究院 | Sulphoaluminate cement repair material and preparation method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1669972A (en) * | 2005-02-23 | 2005-09-21 | 刘茂平 | Compound retarder for quick hardening sulphoaluminate cement |
| CN102173612A (en) * | 2011-03-14 | 2011-09-07 | 广州市越堡水泥有限公司 | Slow-setting cement for highway roadbeds |
| JP2012036028A (en) * | 2010-08-04 | 2012-02-23 | Denki Kagaku Kogyo Kk | Spraying material and spraying method using the same |
| CN105601212A (en) * | 2015-12-30 | 2016-05-25 | 卓达新材料科技集团威海股份有限公司 | Saltpetering-prevention sulphoaluminate cement product and preparation method thereof |
| CN106746894A (en) * | 2017-01-23 | 2017-05-31 | 济南大学 | A kind of retarder and its application method suitable for sulphate aluminium cement |
| CN107488018A (en) * | 2017-08-23 | 2017-12-19 | 同济大学 | A kind of sulphoaluminate cement base superelevation ductility concrete and preparation method thereof |
| CN108191283A (en) * | 2018-03-22 | 2018-06-22 | 中国建筑材料科学研究总院有限公司 | Sulphate aluminium cement composite fortifier |
-
2021
- 2021-02-01 CN CN202110137381.8A patent/CN112851185B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1669972A (en) * | 2005-02-23 | 2005-09-21 | 刘茂平 | Compound retarder for quick hardening sulphoaluminate cement |
| JP2012036028A (en) * | 2010-08-04 | 2012-02-23 | Denki Kagaku Kogyo Kk | Spraying material and spraying method using the same |
| CN102173612A (en) * | 2011-03-14 | 2011-09-07 | 广州市越堡水泥有限公司 | Slow-setting cement for highway roadbeds |
| CN105601212A (en) * | 2015-12-30 | 2016-05-25 | 卓达新材料科技集团威海股份有限公司 | Saltpetering-prevention sulphoaluminate cement product and preparation method thereof |
| CN106746894A (en) * | 2017-01-23 | 2017-05-31 | 济南大学 | A kind of retarder and its application method suitable for sulphate aluminium cement |
| CN107488018A (en) * | 2017-08-23 | 2017-12-19 | 同济大学 | A kind of sulphoaluminate cement base superelevation ductility concrete and preparation method thereof |
| CN108191283A (en) * | 2018-03-22 | 2018-06-22 | 中国建筑材料科学研究总院有限公司 | Sulphate aluminium cement composite fortifier |
Non-Patent Citations (1)
| Title |
|---|
| 邵俐等: ""水泥粉煤灰加固有机质土的试验研究"", 《工程地质学报》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116425565A (en) * | 2022-12-13 | 2023-07-14 | 广东红墙新材料股份有限公司 | Surface retarder and preparation method thereof |
| CN116535156A (en) * | 2023-04-04 | 2023-08-04 | 东南大学 | Nano modified 3D printing high-strength concrete capable of improving pumpability and preparation method thereof |
| CN116535156B (en) * | 2023-04-04 | 2024-05-28 | 东南大学 | Nano modified 3D printing high-strength concrete capable of improving pumpability and preparation method thereof |
| CN117361988A (en) * | 2023-09-11 | 2024-01-09 | 山东高速集团有限公司创新研究院 | Sulphoaluminate cement repair material and preparation method thereof |
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