CN104370489A - Alkali-free liquid accelerator and preparation method thereof - Google Patents
Alkali-free liquid accelerator and preparation method thereof Download PDFInfo
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- CN104370489A CN104370489A CN201410525174.XA CN201410525174A CN104370489A CN 104370489 A CN104370489 A CN 104370489A CN 201410525174 A CN201410525174 A CN 201410525174A CN 104370489 A CN104370489 A CN 104370489A
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- alkali
- free liquid
- liquid accelerator
- silicate
- stablizer
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- 239000007788 liquid Substances 0.000 title claims abstract description 46
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims abstract description 22
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910003002 lithium salt Inorganic materials 0.000 claims abstract description 15
- 159000000002 lithium salts Chemical class 0.000 claims abstract description 15
- 150000001412 amines Chemical class 0.000 claims abstract description 11
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid group Chemical group C(CC(O)(C(=O)O)CC(=O)O)(=O)O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 33
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 claims description 27
- 238000003756 stirring Methods 0.000 claims description 25
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical group OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 claims description 14
- 238000010792 warming Methods 0.000 claims description 12
- 239000007864 aqueous solution Substances 0.000 claims description 11
- 239000003795 chemical substances by application Substances 0.000 claims description 11
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 claims description 10
- 239000000391 magnesium silicate Substances 0.000 claims description 10
- 229910052919 magnesium silicate Inorganic materials 0.000 claims description 10
- 235000019792 magnesium silicate Nutrition 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- -1 add while stirring Chemical compound 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 4
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 2
- AMVQGJHFDJVOOB-UHFFFAOYSA-H aluminium sulfate octadecahydrate Chemical compound O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.[Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O AMVQGJHFDJVOOB-UHFFFAOYSA-H 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 229960004418 trolamine Drugs 0.000 claims description 2
- 230000015271 coagulation Effects 0.000 abstract description 7
- 238000005345 coagulation Methods 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 239000003381 stabilizer Substances 0.000 abstract 1
- 239000004568 cement Substances 0.000 description 10
- 239000004567 concrete Substances 0.000 description 10
- 239000000126 substance Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000004570 mortar (masonry) Substances 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000004566 building material Substances 0.000 description 3
- 239000011378 shotcrete Substances 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical group [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000004574 high-performance concrete Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The invention discloses an alkali-free liquid accelerator and a preparation method thereof. The alkali-free liquid accelerator comprises 3-15% of silicate, 35-50% of aluminum sulfate, 5-15% of organic amine, 0-3% of a stabilizing agent, 0-5% of a lithium salt and the balance water. Compared with the product obtained by the traditional technology, the alkali-free liquid accelerator has the advantages of low rebound rate, short coagulation time, high early-stage strength, and less even almost no after-stage strength loss.
Description
Technical field
The invention belongs to the building material technical field of civil engineering work industry, be specifically related to a kind of alkali-free liquid accelerator for environment-friendly type high performance wet shotcreting and preparation method thereof.
Background technology
Feature due to concrete spraying technique is that productivity is high, and substantially without dust during construction, during mixing concrete, water cement ratio is easy to control, and uniformity is high, and jeting effect is good.Current dry pressure spray process is replaced by wet spraying process gradually.
Liquid accelerator is for preparing the fast hardening concrete of wet shot type high performance concrete and mortar, sealing leak stopping, the first lining concrete in tunnel and the mortars such as railway, highway, water conservancy project diversion tunnel, and the roadway in metallurgical, colliery, military project, thin wall concrete (mortar) reinforcing of underground works of people's air defense, reparation, foundation ditch retaining wall, fire-resistant engineering, protection works.Accelerating chemicals is added in the condensation and setting rate that not only can accelerate cement in gunite, sand-cement slurry, concrete; improve early strength; later strength impact is less; even do not reduce; and increase substantially cohesiveness and bonding strength, the reduction rebound degree of concrete and mortar, effectively reduce the material unaccounted-for (MUF) that resilience causes, improve economic benefit; and the alkaline cement dust reduced in air, protect environment, accelerate construction speed.
Because containing a large amount of alkaline matters in traditional liquid accelerator, these alkaline matters cause late strength of concrete to lose.Plant ecology in accelerating chemicals can make concrete expansion destroy, and loses weather resistance.Alkalescence accelerating chemicals has extremely strong corrodibility, in production and construction, not only corrode construction equipment, and energy grievous injury HUMAN HEALTH, and alkali-free liquid accelerator can improve these problems.Alkali-free liquid accelerator is chloride ion-containing, K+, Na+ ion of alkali-free metal, not Corrosion Reinforcement, free from environmental pollution, the health that do not injure operating personnel not.
New type compound alkali-free liquid accelerator is the developing direction of current accelerating chemicals.Comprise with inorganic setting accelerator and organic reinforcing agent is compound, with inorganic setting accelerator and the compound low alkali for main component of organic accelerating chemicals or alkali-free quick-coagulant." a kind of low-alkaline liquid accelerating agent and preparation method thereof (number of patent application 201110095016.1) ", " a kind of Hardenfast and preparation method thereof (number of patent application 201110266227.7) " and " environment-friendly type alkali-free liquid accelerator for sprayed concrete and preparation method thereof (number of patent application 200810203051.9) " all belong to compound alkali-free liquid accelerator.But the space that the rapid hardening effect of above-mentioned several accelerating chemicals is still improved.
Summary of the invention
The object of the present invention is to provide a kind of alkali-free liquid accelerator of rapid hardening better effects if (being designated as TY-3C alkali-free liquid accelerator), and the preparation method of this accelerating chemicals is provided.
The technical solution used in the present invention:
A kind of alkali-free liquid accelerator, comprise the component of following mass percent: silicate: 3%-15%, Tai-Ace S 150: 35%-50%, organic amine: 5%-15%, stablizer: 0%-3%, lithium salts: 0%-5%, rest part is water.
Preferably, described alkali-free liquid accelerator comprises the component of following mass percent: silicate: 5%-10%, Tai-Ace S 150: 40%-45%, organic amine: 8%-12%, stablizer: 1%-2%, lithium salts: 2%-3%, and rest part is water.
Further, described silicate is degree Beaume is 31, and modulus is the Magnesium Silicate q-agent aqueous solution of 3.4; Described Tai-Ace S 150 is Patent alum, wherein not iron content, Al
2o
3content is greater than 15%; Described organic amine is diethanolamine or trolamine; Described stablizer is citric acid; Described lithium salts is lithium hydroxide.
Present invention also offers the preparation method of described alkali-free liquid accelerator, its step is as follows:
(1) take each material in proportion, described water is joined in reactor, be warming up to 60 DEG C, insulation;
(2) slowly joined in described reactor by described silicate, add while stirring, silicate all adds rear continuation and stirs, until silicate all dissolves;
(3) described organic amine is joined in described reactor, stir 15min, stir;
(4) described material in reactor is warming up to 70 DEG C, drops into described Tai-Ace S 150, after feeding intake, be warming up to 90 DEG C, insulated and stirred 3 hours;
(5) if when the content of described stablizer and lithium salts is 0, be then cooled to room temperature (i.e. 15-25 DEG C) and stop afterwards stirring, produce complete, blanking;
If when the content of described stablizer and lithium salts has at least one not to be 0, be then cooled to 50 DEG C, add described stablizer and/or lithium salts stirring 30min, be cooled to room temperature (i.e. 15-25 DEG C) and stop afterwards stirring, produce complete, blanking.
The present invention is compared with traditional technology, and rebound degree is low, and time of coagulation is short, and early strength is high, and later strength loss is little, almost free of losses.
Embodiment
The present invention will be described in detail specific embodiment below.It will be appreciated by those skilled in the art that following examples are further illustrating technical solution of the present invention, instead of limit its scope.Per-cent in each embodiment is mass percent.
Embodiment 1
A kind of alkali-free liquid accelerator, comprises the component of following mass percent: the Magnesium Silicate q-agent aqueous solution (degree Beaume is 31, and modulus is 3.4) 5%, Tai-Ace S 150 45%, diethanolamine 8%, water 42%.
The preparation method of this alkali-free liquid accelerator:
(1) take each material in proportion, described water is joined in reactor, be warming up to 60 DEG C, insulation;
(2) slowly joined in described reactor by described silicate, add while stirring, silicate all adds rear continuation and stirs, until silicate all dissolves;
(3) described organic amine is joined in described reactor, stir 15min, stir;
(4) described material in reactor is warming up to 70 DEG C, drops into described Tai-Ace S 150, after feeding intake, be warming up to 90 DEG C, insulated and stirred 3 hours;
(5) stop stirring after being cooled to room temperature, produce complete, blanking.
Embodiment 2
A kind of alkali-free liquid accelerator, comprises the component of following mass percent: the Magnesium Silicate q-agent aqueous solution (degree Beaume is 31, and modulus is 3.4) 5%, Tai-Ace S 150 45%, diethanolamine 10%, lithium hydroxide 1%, citric acid 1%, water 38%.
The preparation method of this alkali-free liquid accelerator:
(1) take each material in proportion, described water is joined in reactor, be warming up to 60 DEG C, insulation;
(2) slowly joined in described reactor by described silicate, add while stirring, silicate all adds rear continuation and stirs, until silicate all dissolves;
(3) described organic amine is joined in described reactor, stir 15min, stir;
(4) described material in reactor is warming up to 70 DEG C, drops into described Tai-Ace S 150, after feeding intake, be warming up to 90 DEG C, insulated and stirred 3 hours;
(5) be cooled to 50 DEG C, add citric acid and lithium hydroxide stirring 30min, stop stirring after being cooled to room temperature, produce complete, blanking.
Embodiment 3
A kind of alkali-free liquid accelerator, comprises the component of following mass percent: the Magnesium Silicate q-agent aqueous solution (degree Beaume is 31, and modulus is 3.4) 5%, Tai-Ace S 150 45%, diethanolamine 12%, lithium hydroxide 2%, citric acid 2%, water 34%.
The preparation method of this this alkali-free liquid accelerator is with embodiment 2.
Embodiment 4
A kind of alkali-free liquid accelerator, comprises the component of following mass percent: the Magnesium Silicate q-agent aqueous solution (degree Beaume is 31, and modulus is 3.4) 7.5%, Tai-Ace S 150 42.5%, diethanolamine 8%, lithium hydroxide 1%, citric acid 2%, water 39%.
The preparation method of this this alkali-free liquid accelerator is with embodiment 2.
Embodiment 5
A kind of alkali-free liquid accelerator, comprises the component of following mass percent: sodium silicate aqueous solution (degree Beaume is 40, and modulus is 3.4) 7.5%, Tai-Ace S 150 42.5%, diethanolamine 10%, lithium hydroxide 2%, citric acid 1%, water 37%.
The preparation method of this this alkali-free liquid accelerator is with embodiment 2.
Embodiment 6
A kind of alkali-free liquid accelerator, comprises the component of following mass percent: the Magnesium Silicate q-agent aqueous solution (degree Beaume is 31, and modulus is 3.4) 7.5%, Tai-Ace S 150 42.5%, diethanolamine 12%, water 38%.
The preparation method of this this alkali-free liquid accelerator is with embodiment 1.
Embodiment 7
A kind of alkali-free liquid accelerator, comprises the component of following mass percent: the Magnesium Silicate q-agent aqueous solution (degree Beaume is 31, and modulus is 3.4) 10%, Tai-Ace S 150 40%, diethanolamine 8%, lithium hydroxide 2%, citric acid 1%, water 39%.
The preparation method of this this alkali-free liquid accelerator is with embodiment 2.
Embodiment 8
A kind of alkali-free liquid accelerator, comprises the component of following mass percent: the Magnesium Silicate q-agent aqueous solution (degree Beaume is 31, and modulus is 3.4) 10%, Tai-Ace S 150 40%, diethanolamine 10%, citric acid 2%, water 38%.
The preparation method of this this alkali-free liquid accelerator is with embodiment 2.
Embodiment 9
A kind of alkali-free liquid accelerator, comprises the component of following mass percent: the Magnesium Silicate q-agent aqueous solution (degree Beaume is 31, and modulus is 3.4) 10%, Tai-Ace S 150 40%, diethanolamine 12%, lithium hydroxide 1%, water 37%.
The preparation method of this this alkali-free liquid accelerator is with embodiment 2.
In use, with the weight of reference cement for reference standard, volume is 4%-7% to the TY-3C alkali-free liquid accelerator provided according to above-mentioned formula and technique.The detection of cement paste time of coagulation and sand-cement slurry ultimate compression strength is carried out in requirement according to Chinese building material industry standard JC477-2005 " sprayed concrete accelerating chemicals " to the present invention, the presetting period is made to be less than 5 minutes, final setting time is less than 12 minutes, within 1 day, ultimate compression strength is greater than 6MPa, and within 28 days, compressive strength rate is greater than 70%.
Accelerating chemicals prepared by embodiment 1-embodiment 9 joins in cement slurry according to 5% of cement weight, and detected result is as shown in table 1.
Table 1 detected result
| Product | Presetting period/min:s | Final setting time/min:s | 1d ultimate compression strength/MPa | 28d compressive strength rate/% |
| Example 1 | 4ˊ18〞 | 9ˊ34〞 | 9.7 | 92.6 |
| Example 2 | 3ˊ52〞 | 9ˊ16〞 | 12.4 | 94.0 |
| Example 3 | 3ˊ04〞 | 7ˊ50〞 | 13.7 | 98.2 |
| Example 4 | 3ˊ49〞 | 9ˊ03〞 | 10.4 | 93.4 |
| Example 5 | 3ˊ15〞 | 8ˊ02〞 | 12.9 | 96.5 |
| Example 6 | 4ˊ12〞 | 9ˊ01〞 | 13.2 | 98.3 |
| Example 7 | 2ˊ11〞 | 6ˊ51〞 | 13.9 | 100.2 |
| Example 8 | 3ˊ37〞 | 8ˊ08〞 | 14.2 | 99.7 |
| Example 9 | 3ˊ19〞 | 7ˊ54〞 | 14.6 | 101.5 |
In analysis, table is known, and embodiment 1-embodiment 9 all meets the requirement of Chinese building material industry standard JC477-2005.Embodiment 3,6,9(diethanolamine consumption is 12%) respectively corresponding than embodiment 1,4,7(diethanolamine consumption is 8%) 1d ultimate compression strength and 28d compressive strength rate high, illustrates that diethanolamine effect is in the present invention raising concrete strength.Result time of coagulation is starched in overall observation only, the result optimal of embodiment 7,8,9, next is embodiment 4,5,6, the detected result of embodiment 1,2,3 is worst, when illustrating that silicate is identical with Tai-Ace S 150 total amount, the amount ratio of silicate and Tai-Ace S 150 has impact to time of coagulation, and this ratio is larger, and condensation effect is better.But this numerical value is brought up to a certain degree, have white particle in solution and separate out.In addition, the lithium salts volume in embodiment 3,5,7 is more, and time of coagulation is shorter, shows that lithium salts also can accelerate cement setting.
The static placement of product of above embodiment 3 months, observation stability of solution finds, embodiment 1,6,8(do not add citric acid) obviously layering, and other 6 embodiments are without layering, illustrate that citric acid is the stablizer of product, the volume of 1% has met the requirement of this product.Clean slurry time of coagulation of the above embodiment of comprehensive analysis, glue sand compressive strength rate and appearance stability, judge that the test-results of embodiment 7 is more excellent results, show that the raw material ratio of embodiment 7 is suitable proportions of the present invention.
Claims (8)
1. an alkali-free liquid accelerator, is characterized in that the component comprising following mass percent: silicate: 3%-15%, Tai-Ace S 150: 35%-50%, organic amine: 5%-15%, stablizer: 0%-3%, lithium salts: 0%-5%, and rest part is water.
2. a kind of alkali-free liquid accelerator according to claim 1, is characterized in that the component comprising following mass percent: silicate: 5%-10%, Tai-Ace S 150: 40%-45%, organic amine: 8%-12%, stablizer: 1%-2%, lithium salts: 2%-3%, rest part is water.
3. a kind of alkali-free liquid accelerator as requested described in 1 or 2, is characterized in that: described silicate is degree Beaume is 31, and modulus is the Magnesium Silicate q-agent aqueous solution of 3.4.
4. a kind of alkali-free liquid accelerator as requested described in 1 or 2, is characterized in that: described Tai-Ace S 150 is Patent alum, wherein not iron content, Al
2o
3content is greater than 15%.
5. a kind of alkali-free liquid accelerator as requested described in 1 or 2, is characterized in that: described organic amine is diethanolamine or trolamine.
6. a kind of alkali-free liquid accelerator as requested described in 1 or 2, is characterized in that: described stablizer is citric acid.
7. a kind of alkali-free liquid accelerator as requested described in 1 or 2, is characterized in that: described lithium salts is lithium hydroxide.
8. the preparation method of the alkali-free liquid accelerator described in claim 1 or 2, is characterized in that its step is as follows:
(1) take each material in proportion, described water is joined in reactor, be warming up to 60 DEG C, insulation;
(2) slowly joined in described reactor by described silicate, add while stirring, silicate all adds rear continuation and stirs, until silicate all dissolves;
(3) described organic amine is joined in described reactor, stir 15min, stir;
(4) material in reactor is warming up to 70 DEG C, drops into described Tai-Ace S 150, after feeding intake, be warming up to 90 DEG C, insulated and stirred 3 hours;
(5) if when the content of described stablizer and lithium salts is 0, then stop stirring after being cooled to room temperature, produce complete, blanking;
If when the content of described stablizer and lithium salts has at least one not to be 0, be then cooled to 50 DEG C, add described stablizer and/or lithium salts stirring 30min, stop stirring after being cooled to room temperature, produce complete, blanking.
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| CN201410525174.XA CN104370489B (en) | 2014-10-09 | 2014-10-09 | A kind of alkali-free liquid accelerator and preparation method thereof |
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Cited By (6)
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| CN107473620A (en) * | 2017-08-11 | 2017-12-15 | 五家渠格辉新材料有限责任公司 | A kind of alkali-free liquid concrete accelerator and its preparation method and application |
| CN109133707A (en) * | 2018-09-20 | 2019-01-04 | 山西恒泰伟业建材有限公司 | A kind of alkali-free liquid accelerator and preparation method thereof |
| CN109665736A (en) * | 2018-12-13 | 2019-04-23 | 中铁四局集团有限公司 | A kind of liquid accelerator and preparation method thereof |
| CN112987813A (en) * | 2021-03-29 | 2021-06-18 | 武昌理工学院 | Water cooling optimization control method for lining concrete with different strengths |
| EP4082995A1 (en) * | 2021-04-30 | 2022-11-02 | Sika Technology AG | Viscosity reduction of aluminum sulfate suspensions with alkali metal compounds |
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| CN112987813A (en) * | 2021-03-29 | 2021-06-18 | 武昌理工学院 | Water cooling optimization control method for lining concrete with different strengths |
| EP4082995A1 (en) * | 2021-04-30 | 2022-11-02 | Sika Technology AG | Viscosity reduction of aluminum sulfate suspensions with alkali metal compounds |
| WO2022229243A1 (en) * | 2021-04-30 | 2022-11-03 | Sika Technology Ag | Viscosity reduction in aluminum sulfate suspensions using alkali metal compounds |
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