CN1974466A - Alkali-free liquid setting accelerator for spray concrete - Google Patents
Alkali-free liquid setting accelerator for spray concrete Download PDFInfo
- Publication number
- CN1974466A CN1974466A CN 200610098296 CN200610098296A CN1974466A CN 1974466 A CN1974466 A CN 1974466A CN 200610098296 CN200610098296 CN 200610098296 CN 200610098296 A CN200610098296 A CN 200610098296A CN 1974466 A CN1974466 A CN 1974466A
- Authority
- CN
- China
- Prior art keywords
- alkali
- free liquid
- setting accelerator
- liquid setting
- spray concrete
- 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
- 239000004567 concrete Substances 0.000 title claims abstract description 21
- 239000007788 liquid Substances 0.000 title claims abstract description 20
- 239000007921 spray Substances 0.000 title claims abstract description 15
- 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 19
- 239000004568 cement Substances 0.000 claims abstract description 17
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 235000011187 glycerol Nutrition 0.000 claims abstract description 6
- 238000002360 preparation method Methods 0.000 claims description 13
- 239000011378 shotcrete Substances 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 11
- 239000013530 defoamer Substances 0.000 claims description 10
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical group OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 claims description 8
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- ZZVUWRFHKOJYTH-UHFFFAOYSA-N diphenhydramine Chemical compound C=1C=CC=CC=1C(OCCN(C)C)C1=CC=CC=C1 ZZVUWRFHKOJYTH-UHFFFAOYSA-N 0.000 claims description 6
- 229920000570 polyether Polymers 0.000 claims description 4
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 2
- 229960004418 trolamine Drugs 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 4
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 abstract 2
- 239000003381 stabilizer Substances 0.000 abstract 2
- -1 alcohol amine Chemical class 0.000 abstract 1
- 239000002518 antifoaming agent Substances 0.000 abstract 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 abstract 1
- 235000019341 magnesium sulphate Nutrition 0.000 abstract 1
- 238000005728 strengthening Methods 0.000 abstract 1
- 239000000126 substance Substances 0.000 description 14
- 239000000463 material Substances 0.000 description 9
- WRUGWIBCXHJTDG-UHFFFAOYSA-L magnesium sulfate heptahydrate Chemical group O.O.O.O.O.O.O.[Mg+2].[O-]S([O-])(=O)=O WRUGWIBCXHJTDG-UHFFFAOYSA-L 0.000 description 5
- 229940061634 magnesium sulfate heptahydrate Drugs 0.000 description 5
- 239000003513 alkali Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000011398 Portland cement Substances 0.000 description 3
- 239000007795 chemical reaction product Substances 0.000 description 2
- 239000000701 coagulant Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- NPHFFBWJNRVQNH-UHFFFAOYSA-H NN.S(=O)(=O)([O-])[O-].[Al+3].S(=O)(=O)([O-])[O-].S(=O)(=O)([O-])[O-].[Al+3] Chemical compound NN.S(=O)(=O)([O-])[O-].[Al+3].S(=O)(=O)([O-])[O-].S(=O)(=O)([O-])[O-].[Al+3] NPHFFBWJNRVQNH-UHFFFAOYSA-H 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 1
- 150000004645 aluminates Chemical class 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 229910021502 aluminium hydroxide Inorganic materials 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000006184 cosolvent Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000004576 sand Substances 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The alkali-free liquid setting accelerator for spray concrete is compounded with aluminum sulfate 40-70 wt%, magnesium sulfate in 5-50 wt% of the aluminum sulfate, alcohol amine 2-10 wt%, stabilizer 0-10 wt%, defoaming agent in 0-10 wt% of the stabilizer, glycerin 0-1 wt%, and water for the rest. The present invention has excellent cement adaptability, and can provide excellent early strengthening performance and spray construction performance even if to difficult cement with lower C3A content, such as modified cement.
Description
Technical field
The present invention relates to a kind of accelerating chemicals that is used for cement-based material, especially a kind of alkali-free liquid setting accelerator for spray concrete.
Background technology
Construction of shotcrete have a lot of common templates casting concretes the advantage that can't compare, become extremely important and essential measure in the modern underground works.Sprayed concrete must harden as quick as thought, solidify, and this can reach by adding accelerating chemicals at the nozzle place to concrete.Sprayed concrete is very different with the accelerating chemicals that uses in accelerating chemicals and the normal concrete, generally comprise material as alkali metal hydroxide, carbonate, aluminate and silicate and so on, because these materials have strong basicity, though can satisfy the service requirements of sprayed concrete, also bring a lot of problems simultaneously.Such as, corrodibility is strong, dust is big, rebound degree is high, concrete permeability resistance is poor, later strength reduces shortcomings such as obvious.In addition, because the alkali content height causes probably that also concrete produces alkali.
For overcoming above-mentioned defective, people begin to develop non-alkaline accelerating chemicals, nearest development is to be the material of main component with aluminium hydroxide, Tai-Ace S 150 or their composition, and not only non-alkalescence of this material but also alkali content extremely low (being generally less than 1%) have excellent rapid hardening epistasis energy early simultaneously.But, for number of C
3The difficult cement that A content is lower, these materials are difficult to satisfy the requirement of sprayed concrete.In this case,, but still can't provide enough early strengths, guarantee that the safety of engineering is carried out even, can shorten concrete time of coagulation by improving volume.
Summary of the invention
Task of the present invention is exactly that a kind of liquid accelerator for sprayed concrete that can overcome above-mentioned prior art defective will be provided.
The present invention is mixed and made into homodisperse liquid accelerator based on water-soluble back of the raw material of Tai-Ace S 150, sal epsom and hydramine, and is formulated by following compositions in weight percentage:
Tai-Ace S 150: 40-70%, sal epsom: the 5-50% of Tai-Ace S 150, hydramine: 2-10%, stablizer: 0-10%, defoamer: the 0-10% of stablizer, glycerine 0-1%, surplus is a water.
The preferred content of the Tai-Ace S 150 that uses among the present invention is 45-65%, can be selected from materials more well known in the art, and preferable material is commercially available technical grade hydrazine aluminum sulfate.General its Al that uses
2O
3Weight content characterizes its purity, preferably contains 16%-17%Al
2O
3Tai-Ace S 150.
The preferred content of sal epsom is the 15-38% of Tai-Ace S 150 content among the present invention, and it can improve early strength, improves the adaptability of admixture to cement, even for C
3The difficult cement that A content is lower still can have higher early strength, satisfies the requirement of sprayed concrete.Preferred sal epsom is magnesium sulfate heptahydrate.
The preferred content that is used for hydramine of the present invention is 5-8%, comprises diethanolamine, trolamine, preferably diethanolamine.
The preferred content of the stablizer among the present invention is 0-2%, is used to prolong the storage time of the present invention, keeps the dispersion liquid long-term storage and not obvious precipitation.Preferred stablizer is the polyethers nonionogenic tenside.The polyethers nonionogenic tenside can be commercially available broad variety, and is typical in TX10.Because of this tensio-active agent has tangible bleed effect usually, need to introduce a certain proportion of defoamer 0-10% of weight (be generally himself).Defoamer is preferably selected not siliceous defoamer for use.
Glycerine among the present invention is used for promoting to form stable dispersion liquid as the cosolvent of Tai-Ace S 150.
Concrete application method of the present invention is: according to routine alkali-free liquid setting accelerator joined in the jet cement composition at the nozzle place, and the preparation sprayed concrete, its consumption generally is 4-12%, preferred 5-10% (is the weight of benchmark with cement).
The present invention can produce fabulous effect, and outstanding feature is early strength when developing rapidly, and final strength descends seldom, even descends.Because use traditional strong basicity accelerating chemicals always to make strength degradation obvious, and consumption is high more, it is big more to descend, uses the present invention and then this effect can be reduced to minimum.Accelerating chemicals of the present invention also has the advantage of alkali-free simultaneously, can reduce the possibility that produces alkali greatly.And the adaptability of the present invention and cement is fine, even for C
3The difficult cement that A content is lower as moderate heat cement, still can provide good high-early-strength performance, satisfies the requirement of construction of shotcrete.
Embodiment
Further describe the present invention with reference to the following examples.
Preparation embodiment 1
Following each composition added in the mixing machine successively mixes, disperses:
Tai-Ace S 150 (16%Al
2O
3) 52
Magnesium sulfate heptahydrate 18
Diethanolamine 6
Water 24
Preparation embodiment 2
Following each composition added in the mixing machine successively mixes, disperses:
Tai-Ace S 150 (16%Al
2O
3) 48
Magnesium sulfate heptahydrate 18
Diethanolamine 7
TX10 1
Defoamer 0.1
Water 25.9
Preparation embodiment 3
Following each composition added in the mixing machine successively mixes, disperses:
Tai-Ace S 150 (16%Al
2O
3) 57
Magnesium sulfate heptahydrate 11
Diethanolamine 5
Glycerine 1.0
Water 26.2
Preparation embodiment 4
Tai-Ace S 150 (17%Al
2O
3) 45
Magnesium sulfate heptahydrate 18
Diethanolamine 7
TX10 1
Water 25.9
Comparative examples 1
Following each composition added in the mixing machine successively mixes, disperses:
Tai-Ace S 150 (16%Al
2O
3) 62
Diethanolamine 7
Glycerine 0.2
TX10 1.5
Defoamer 0.1
Water 29.2
Application Example 1
Cement composition is made up of material beneath:
In 900 parts of hot 42.5 ordinary portland cements
1350 parts of standard sands
450 parts in water
Above water comprises the water in the accelerating chemicals.Press Chinese building material industry standard JC477-2005, every kind of accelerating chemicals of preparation embodiment 1-3 is added in the mortar specimen 1 day and 28 days intensity of test sample with 10% amount of by mass of cement respectively.In addition, also blank the and commercially available alkali-free quick-coagulant MEYCO SA160 that does not add any accelerating chemicals is tested with 11% amount of by mass of cement.The result is as follows:
| The accelerating chemicals sample | 1 day intensity (MPa) | 28 days intensity (MPa) |
| Preparation embodiment 1 | 9.52 | 48.96 |
| Preparation embodiment 2 | 9.15 | 47.68 |
| Preparation embodiment 3 | 8.21 | 52.46 |
| Preparation embodiment 4 | 6.56 | 38.60 |
| Comparative examples 1 | 2.99 | 45.64 |
| MEYCO SA160 | 2.50 | 44.08 |
| Blank | 3.61 | 33.74 |
Intensity was the key index of sprayed concrete with the accelerating chemicals performance in 1 day, and can its big or small direct reaction accelerating chemicals satisfy the basic construction requirement of sprayed concrete, ensured and constructed smoothly, carries out safely.Described according to the JC477-2005 standard, one day intensity need reach 6MPa and just can meet the salable product requirement, reaches 7MPa and can meet the acceptable end product requirement.As seen from the above table, for middle hot 42.5 ordinary portland cements, because of compare its C with Portland cement
3A content is on the low side, uses one day intensity of glue sand of general alkali-free quick-coagulant too low, at all can't engineering demands.1,2 and 3 of preparation embodiment that mix sal epsom can make one day intensity all reach more than the 8MPa, meet the requirement of JC477-2005 to acceptable end product.Simultaneously, its 28 days intensity not only do not descend than the blank intensity of not adding accelerating chemicals, have increased 40-55% on the contrary.And preparation embodiment 4 eliminates the bleed effect of polyethers nonionogenic tenside owing to not adding defoamer, and intensity is slightly influenced.But still can satisfy standard-required.
Claims (10)
1, a kind of alkali-free liquid setting accelerator for spray concrete is characterized in that by following compositions in weight percentage formulated:
Tai-Ace S 150: 40-70%, sal epsom: the 5-50% of Tai-Ace S 150, hydramine: 2-10%, stablizer: 0-10%, defoamer: the 0-10% of stablizer, glycerine 0-1%, surplus is a water.
2, alkali-free liquid setting accelerator for spray concrete as claimed in claim 1, the preferred content that it is characterized in that Tai-Ace S 150 is 45-65%.
3, alkali-free liquid setting accelerator for spray concrete as claimed in claim 1 is characterized in that Tai-Ace S 150 preferably contains 16%-17%Al
2O
3Tai-Ace S 150.
4, alkali-free liquid setting accelerator for spray concrete as claimed in claim 1, the preferred content that it is characterized in that sal epsom is the 15-38% of Tai-Ace S 150.
5, alkali-free liquid setting accelerator for spray concrete as claimed in claim 1, the preferred content that it is characterized in that hydramine is 5-8%.
6, claim 1 or 5 described alkali-free liquid setting accelerator for spray concrete is characterized in that hydramine is selected from diethanolamine or trolamine.
7, alkali-free liquid setting accelerator for spray concrete as claimed in claim 1, the preferred content that it is characterized in that stablizer is 0-2%.
8,, it is characterized in that stablizer preferred, polyethers class nonionogenic tenside as claim 1 or 7 described alkali-free liquid setting accelerator for spray concrete.
9, alkali-free liquid setting accelerator for spray concrete as claimed in claim 1 is characterized in that the preferred not siliceous defoamer of defoamer.
10, any described alkali-free liquid setting accelerator for spray concrete of claim 1 to 9, it is characterized in that alkali-free liquid setting accelerator being joined in the jet cement composition at the nozzle place according to routine, the preparation sprayed concrete, consumption is counted 4-12% with cement weight as benchmark.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100982960A CN100450956C (en) | 2006-12-07 | 2006-12-07 | Alkali-free liquid setting accelerator for spray concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100982960A CN100450956C (en) | 2006-12-07 | 2006-12-07 | Alkali-free liquid setting accelerator for spray concrete |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1974466A true CN1974466A (en) | 2007-06-06 |
| CN100450956C CN100450956C (en) | 2009-01-14 |
Family
ID=38124862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100982960A Active CN100450956C (en) | 2006-12-07 | 2006-12-07 | Alkali-free liquid setting accelerator for spray concrete |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100450956C (en) |
Cited By (22)
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|---|---|---|---|---|
| CN101659527B (en) * | 2009-09-21 | 2011-08-17 | 江苏博特新材料有限公司 | Modified aluminate low-alkali liquid quick-setting agent |
| CN102229477A (en) * | 2011-04-29 | 2011-11-02 | 中国建筑材料科学研究总院 | Alkali-free and chlorine-free liquid concrete accelerating agent as well as preparation method and application thereof |
| CN102249592A (en) * | 2011-06-01 | 2011-11-23 | 中国水利水电科学研究院 | Alkali-free chlorine-free high-early-strength liquid accelerator and preparation method thereof |
| CN102464466A (en) * | 2010-11-02 | 2012-05-23 | 淮南矿业(集团)有限责任公司 | Shotcrete additive and spraying technology of shotcrete |
| CN102923988A (en) * | 2012-11-29 | 2013-02-13 | 北京冶建特种材料有限公司 | Liquid alkali-free chloride-free accelerating agent as well as methods for preparing and using same |
| CN103553406A (en) * | 2013-09-27 | 2014-02-05 | 中国建筑材料科学研究总院 | Alkali and chlorine-free liquid setting accelerator based on industrial polyaluminium sulfate and its preparation method |
| CN105503016A (en) * | 2015-12-18 | 2016-04-20 | 江苏中铁奥莱特新材料有限公司 | High-strength sulfur-free alkali-free liquid accelerator and preparation method thereof |
| CN106587704A (en) * | 2016-12-01 | 2017-04-26 | 长安大学 | Low-doping amount environmentally friendly efficient durable liquid alkali-free accelerator and preparation method thereof |
| CN107216060A (en) * | 2017-07-14 | 2017-09-29 | 贵州禹华建材科技有限公司 | Wide liquid alkali-free quick-coagulant of a kind of applicability and preparation method thereof |
| CN107840593A (en) * | 2017-11-17 | 2018-03-27 | 武汉理工大学 | A kind of gunite concrete early-strength alkali-free liquid setting accelerator and preparation method thereof |
| EP3438073A1 (en) * | 2017-07-31 | 2019-02-06 | Chryso | Additive for hydraulic binder useful to prevent the formation of rust-colored stains at the surface of hydraulic compositions |
| CN110330255A (en) * | 2019-07-02 | 2019-10-15 | 安徽海螺新材料科技有限公司 | It is a kind of to promote solidifying type liquid grinding aid and preparation method thereof |
| CN110963732A (en) * | 2019-12-26 | 2020-04-07 | 西部铁建工程材料科技有限公司 | Environment-friendly alkali-free liquid accelerator and normal-temperature preparation method thereof |
| CN111499248A (en) * | 2020-05-22 | 2020-08-07 | 山西海裕隆建材有限公司 | High-performance alkali-free liquid accelerator special for moderate-heat low-heat cement and preparation method thereof |
| CN111574093A (en) * | 2020-05-22 | 2020-08-25 | 山西海裕隆建材有限公司 | High-performance alkali-free liquid accelerator and preparation method thereof |
| CN112028525A (en) * | 2020-09-09 | 2020-12-04 | 东阳丰友建筑材料有限公司 | Alkali-free accelerator and preparation method and preparation device thereof |
| CN112811848A (en) * | 2021-01-14 | 2021-05-18 | 佛山市凯隽新建材科技有限公司 | Alkali-free liquid accelerator for sprayed concrete and preparation method thereof |
| CN113185177A (en) * | 2021-05-14 | 2021-07-30 | 山西佳维新材料股份有限公司 | Alkali-free fluorine-free chlorine-free accelerator and preparation method and application thereof |
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| CN113264704A (en) * | 2021-07-08 | 2021-08-17 | 山西佳维新材料股份有限公司 | Alkali-free fluorine-free chlorine-free liquid accelerator and preparation method and application thereof |
| CN113880485A (en) * | 2021-11-02 | 2022-01-04 | 北京建筑大学 | Alkali-free fluorine-free liquid accelerator and preparation and application thereof |
| CN115353317A (en) * | 2022-10-21 | 2022-11-18 | 石家庄市长安育才建材有限公司 | High-aluminum-content accelerator and preparation method thereof |
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| GB0128438D0 (en) * | 2001-11-28 | 2002-01-16 | Mbt Holding Ag | Method |
| GB0304158D0 (en) * | 2003-02-25 | 2003-03-26 | Mbt Holding Ag | Admixture |
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| CN1621381A (en) * | 2003-11-28 | 2005-06-01 | 王衡 | Non-alkali accelerator for concrete preparation |
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| CN102464466A (en) * | 2010-11-02 | 2012-05-23 | 淮南矿业(集团)有限责任公司 | Shotcrete additive and spraying technology of shotcrete |
| CN102464466B (en) * | 2010-11-02 | 2013-08-21 | 淮南矿业(集团)有限责任公司 | Shotcrete additive and spraying technology of shotcrete |
| CN102229477A (en) * | 2011-04-29 | 2011-11-02 | 中国建筑材料科学研究总院 | Alkali-free and chlorine-free liquid concrete accelerating agent as well as preparation method and application thereof |
| CN102249592A (en) * | 2011-06-01 | 2011-11-23 | 中国水利水电科学研究院 | Alkali-free chlorine-free high-early-strength liquid accelerator and preparation method thereof |
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| CN103553406A (en) * | 2013-09-27 | 2014-02-05 | 中国建筑材料科学研究总院 | Alkali and chlorine-free liquid setting accelerator based on industrial polyaluminium sulfate and its preparation method |
| CN103553406B (en) * | 2013-09-27 | 2016-08-17 | 中国建筑材料科学研究总院 | A kind of alkali-free chlorine-free liquid accelerator based on industrial polymerisation aluminum sulfate and preparation method thereof |
| CN105503016A (en) * | 2015-12-18 | 2016-04-20 | 江苏中铁奥莱特新材料有限公司 | High-strength sulfur-free alkali-free liquid accelerator and preparation method thereof |
| CN106587704A (en) * | 2016-12-01 | 2017-04-26 | 长安大学 | Low-doping amount environmentally friendly efficient durable liquid alkali-free accelerator and preparation method thereof |
| CN107216060A (en) * | 2017-07-14 | 2017-09-29 | 贵州禹华建材科技有限公司 | Wide liquid alkali-free quick-coagulant of a kind of applicability and preparation method thereof |
| EP3438073A1 (en) * | 2017-07-31 | 2019-02-06 | Chryso | Additive for hydraulic binder useful to prevent the formation of rust-colored stains at the surface of hydraulic compositions |
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| CN107840593A (en) * | 2017-11-17 | 2018-03-27 | 武汉理工大学 | A kind of gunite concrete early-strength alkali-free liquid setting accelerator and preparation method thereof |
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| CN100450956C (en) | 2009-01-14 |
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