CN101475335A - Liquid accelerator for sprayed concrete and preparation thereof - Google Patents
Liquid accelerator for sprayed concrete and preparation thereof Download PDFInfo
- Publication number
- CN101475335A CN101475335A CNA2009100283211A CN200910028321A CN101475335A CN 101475335 A CN101475335 A CN 101475335A CN A2009100283211 A CNA2009100283211 A CN A2009100283211A CN 200910028321 A CN200910028321 A CN 200910028321A CN 101475335 A CN101475335 A CN 101475335A
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- Prior art keywords
- liquid accelerator
- sprayed concrete
- liquid
- accelerator
- percent
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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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/10—Accelerators; Activators
- C04B2103/12—Set accelerators
-
- 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
- C04B2103/60—Agents for protection against chemical, physical or biological attack
- C04B2103/61—Corrosion inhibitors
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00034—Physico-chemical characteristics of the mixtures
- C04B2111/00086—Mixtures with prolonged pot-life
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00034—Physico-chemical characteristics of the mixtures
- C04B2111/00146—Sprayable or pumpable mixtures
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00439—Physico-chemical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00456—Odorless cements
Abstract
The invention relates to a liquid accelerator for shotcrete and a method for preparing the same. The liquid accelerator is prepared from the following components in percentage by weight: 25 to 70 percent of aluminum sulfate, 0 to 8 percent of metal fluoride, 1 to 10 percent of amine substance, 0.5 to 7 percent of pH regulator, 0.01 to 1 percent of thickening agent, and the balance being water. The method for preparing the liquid accelerator comprises the following steps: firstly, dissolving the fluoride into the water; secondly, adding the amine substance to the mixture and heating the solution to a temperature of between 40 and 80 DEG C; thirdly, adding the aluminum sulfate to the solution to perform heat preservation reaction until the solution becomes a uniform liquid; and fourthly, adding the pH regulator and the thickening agent to the uniform liquid and stirring the mixture evenly to finally obtain a uniform liquid substance which is the liquid accelerator for the shotcrete. The liquid accelerator is free from corrosion, has no penetrating odor, has good storage stability so that the phenomena of deposition, crystallization and the like do not appear after the storage of more than 6 months at a temperature of between 0 and 35 DEG C, and does not influence the effect in practice. Using the liquid accelerator with lower mixing proportion (5 to 8 percent), cement can be initially set within 4 minutes and finally set within 10 minutes, and the strength of cement mortar within one day is more than 10 MPa and the storage rate of the strength within 28 days is more than 100 percent.
Description
Technical field
The present invention relates to a kind of liquid accelerator that is used for the wet shot cement-based material, especially a kind of liquid accelerator that is used for sprayed concrete and preparation method thereof.
Background technology
Sprayed concrete has lot of superiority in construction and rock support, become extremely important and necessary measure in the modern underground works.The use range of sprayed concrete in underground works expanded in the particularly development of wet-mix shotcrete technology greatly.The most important effect of liquid accelerator for sprayed concrete is to accelerate condensing of concrete mix, improves early strength, can increase jetting thickness and shortening like this and spray the time of one deck down.
Traditional shotcrete accelerator generally comprises materials such as alkali metal aluminate, carbonate, silicate, and volume is higher, generally accounts for 4%～8% of cement quality.Because these materials all have strong basicity, in construction, often bring a lot of problems.Such as, the alkali metal aluminate accelerating chemicals often has very strong caustic corrosion, easily the workmen is damaged; Can cause bad influence to environment.Simultaneously because a large amount of uses of alkaline matter, late strength of concrete can exist 30% even bigger reduction.
In order to address the above problem, the begin one's study non-alkalify thing that adopts aluminium of people is made the substitute of alkaline accelerating chemicals.German construction research and technology limited liability company have developed a kind of " accelerating chemicals that is used for sprayed concrete " (Chinese patent application number be 200580025329.2), a kind of solution or fine suspension that it is made up of Tai-Ace S 150 and dissolved hydrogen aluminum oxide, hydroxycarboxylic acid and alcamines material.Switzerland MBT Holding AG discloses " a kind of concrete with the preparation of accelerating chemicals " (China Patent No. is 00816806.7), and it is to be dissolved in the water that contains amine by Tai-Ace S 150 and unformed aluminium hydroxide, and adds stablizer and defoamer makes.Patent PCT/EP2004/005647 has announced a kind of liquid quick-setting additive that is used for sprayed concrete, and it is to be prepared from by Tai-Ace S 150, unformed aluminium hydroxide, sal epsom, amine and hydroxycarboxylic acid.Above-mentioned patent has mostly adopted the aluminium salt of unformed aluminium hydroxide or solubility aluminium hydroxide and so on, and cost is very high, and volume is higher during use, generally accounts for 6%～12% of cement quality, and problems such as precipitation, crystallization occur easily, is unfavorable for the standing storage use.
Summary of the invention
Task of the present invention overcomes the deficiencies in the prior art exactly, a kind of non-corrosiveness, no chlorion are provided, have no irritating odor, volume is lower, have the liquid accelerator for sprayed concrete of extended storage stability.
Liquid accelerator for sprayed concrete of the present invention is prepared from by weight by following component:
Tai-Ace S 150 25～70%, metal fluoride 0～8%, amine 1～10%, pH regulator agent 0.5～7%, thickening material 0.01～1%, surplus are water.
The preferred content of the Tai-Ace S 150 that uses among the present invention is 45～60%, specifically can be selected from material well known in the art, can be common technical grade Tai-Ace S 150, low iron Tai-Ace S 150 and non-iron aluminium sulfate, and preferable material is low iron Tai-Ace S 150.Selected Tai-Ace S 150 generally carries out quality control with alumina content, and alumina content is generally 15%～17% in the Tai-Ace S 150 used in the present invention, and preferred alumina content is 15.5～16.2%.
The metal fluoride that uses among the present invention can be selected from basic metal or alkaline-earth metal fluoride, as Calcium Fluoride (Fluorspan), Sodium Fluoride, Potassium monofluoride, and sodium fluoroaluminate and Sodium Silicofluoride, preferable material is Calcium Fluoride (Fluorspan), Sodium Fluoride or Potassium monofluoride.Fluorochemical effect in the present invention is to form stable complex compound system with Tai-Ace S 150, increase the stability of aluminum ion in the aqueous solution, this material has tangible price advantage than amorphous aluminium hydroxide in the existing patent and solubility aluminium hydroxide, and consumption is very little.Fluorochemical is 3%～6% as the preferred content that complex compound forms agent among the present invention.
The amine substance that uses among the present invention can be Monoethanolamine MEA BASF, diethanolamine or trolamine, also can be carbonyl diamine, preferred diethanolamine and trolamine.The existence of amine can be accelerated the dissolving of Tai-Ace S 150 significantly, and can significantly improve the concrete intensity in each length of time.The preferable amount of amine is 2%～8% among the present invention.
The pH regulator agent of using among the present invention is made up of phosphoric acid, hydroxycarboxylic acid, and phosphoric acid can be selected from ortho-phosphoric acid, and hydroxycarboxylic acid can be selected from formic acid, acetate or oxalic acid.
It also can be the organic polymer thickening material that the thickening material that uses among the present invention can be selected from inorganic thickening agent, and optionally inorganic thickening agent has sepiolite Magnesium Silicate q-agent, Attapulgite figure or wilkinite, preferred attapulgite or sepiolite Magnesium Silicate q-agent.The optional organic macromolecule thickener is polyacrylamide or polyvinyl alcohol, the optimization polypropylene acid amides.The use of thickening material can improve stability in storage of the present invention significantly, and can improve the cohesiveness of cement slurry, thereby reduces the springback capacity in the construction of shotcrete process.
The present invention is that by above-mentioned raw materials at a certain temperature, prepared in reaction forms in the aqueous solution its concrete manufacture method is as follows:
A. at first that fluorochemical is water-soluble, add amine then, under the state that stirs that Tai-Ace S 150 is soluble in water.Amine has the effect of tangible promotion dissolved for Tai-Ace S 150, also can earlier Tai-Ace S 150 be added in the entry, adds amine substance subsequently.This process need realizes that by heating Heating temperature is 40～80 ℃.
B. the pH regulator agent is added in the above-mentioned product, stirred then.
C. add thickening material at last and stir, promptly obtain required liquid accelerator for sprayed concrete.
Last resulting sprayed concrete liquid accelerator is a kind of yellow-green colour or albescent clear solution or fine suspension body, and color is along with Fe in the Tai-Ace S 150
2O
3Content.
Concrete application method of the present invention is: according to ordinary method liquid accelerator is joined in the sprayed concrete mix at the nozzle place, its consumption generally is 4%～9% of a cement consumption, preferred 5%～8%.
The present invention has following positive effect for sprayed concrete:
1, according to the experiment condition of JC477-2005, the present invention promptly can make cement initial set within 4 minutes, final set within 10 minutes at (5%～8%) under the lower volume.
2, according to the experiment condition of JC477-2005, more than 10Mpa, the intensity storage rate was greater than 100% in 28 days in the 1 day intensity that can make sand-cement slurry in the present invention.
3, the present invention does not have burn into and has no irritating odor, and can bring good working environment, has good preservation stability simultaneously, stores not occur phenomenons such as precipitation, crystallization more than 6 months under 0～35 ℃ of temperature, does not influence result of use.
Embodiment
Preparation embodiment 1
A kind of sprayed concrete accelerating chemicals is a unit with weight:
Tai-Ace S 150 (Al
2O
315.8%) 50%
Diethanolamine 6%
Sodium Fluoride 5%
Phosphatase 11 .5%
Attapulgite 0.5%
Water 37%
Above-mentioned sprayed concrete is specially with the preparation method of liquid accelerating chemicals:
1) Sodium Fluoride that takes by weighing described part by weight adds and makes its dissolving in the entry, and this process need is realized down at 40～100 ℃; Add diethanolamine subsequently; Add Tai-Ace S 150 at last, stirring becomes clear soln or fine suspension until system, needs the temperature that keeps previous step above-mentioned in this process.
2) go into phosphoric acid and stirring.
3) add Attapulgite figure and stirring, cooling obtains required liquid accelerator for sprayed concrete.
Preparation embodiment 2
Tai-Ace S 150 (Al
2O
315.8%) 54%
Diethanolamine 6%
Sodium Fluoride 5%
Phosphatase 11 %
Formic acid 0.5%
Attapulgite 0.8%
Water 32.7%
Preparation method and embodiment are close, and phosphoric acid and formic acid can be pre-mixed before adding, and also can add successively separately.
Preparation embodiment 3
Tai-Ace S 150 (Al
2O
315.6%) 60%
Diethanolamine 4%
Sodium Fluoride 4%
Phosphatase 11 .5%
Sepiolite Magnesium Silicate q-agent 0.5%
Water 30%
The preparation method is with embodiment 1.
Preparation embodiment 4
Tai-Ace S 150 (Al
2O
315.8%) 55
Diethanolamine 7
Calcium Fluoride (Fluorspan) 3
Phosphatase 11
Oxalic acid 1.5
Polyacrylamide 0.2
Water 34.3
The preparation method is close with embodiment 1, and oxalic acid is a solid particulate, preferably is dissolved in the water in advance before adding.
Preparation embodiment 5
Tai-Ace S 150 (Al
2O
316.0%) 52
Trolamine 2
Phosphoric acid 2
Oxalic acid 4
Polyacrylamide 0.2
Water 37.8
The preparation method is with embodiment 4
Application Example 1
Carry out cement paste time of coagulation and strength of cement mortar test according to the requirement of Chinese building material industry standard JC477-2005 " sprayed concrete accelerating chemicals ".Wherein the liquid accelerator consumption is according to the percentage calculation of cement weight.Cement paste test time of coagulation
Lafarge PO.42.5 cement 400
Water 160
The strength of cement mortar test
Lafarge PO42.5 cement 900
Standard sand 1350
Water 450
Accelerating chemicals adds in the cement slurry according to 7% of cement weight, and above-mentioned water consumption has comprised water contained in the liquid accelerator simultaneously.In the strength test, except testing 1 day intensity and 28 days intensity, do not carried out strength trial, be mixed with mortar and its 28 days strength ratio in order to test to adding the blank mortar of any quick-hardening.
Liquid accelerator for sprayed concrete among the present invention can make satisfy presetting period less than 5 minute the time of coagulation of cement paste under 7% volume, and final setting time was less than 12 minutes requirement.Mortar strength was reached more than the 14Mpa, the 6Mpa in the Chinese building material industry standard at one day.
Application Example 2
Example 3 prepared liquid accelerator for sprayed concrete are carried out time of coagulation and mortar strength experiment according to JC477-2005 " sprayed concrete accelerating chemicals " for dissimilar and cement brand.Test-results is as follows:
Liquid accelerator for sprayed concrete provided by the invention can make dissimilar and cement brand satisfy the construction requirement of sprayed concrete under lower volume, has good cement adaptability.
Claims (15)
1, a kind of liquid accelerator for sprayed concrete is characterized in that being prepared from by following compositions in weight percentage:
Tai-Ace S 150 25～70%, metal fluoride 0～8%, amine substance 1～10%, pH regulator agent 0.5～7%, thickening material 0.01～1%, surplus are water.
2, liquid accelerator for sprayed concrete according to claim 1, the content that it is characterized in that Tai-Ace S 150 is 45%～65%.
3, liquid accelerator for sprayed concrete as claimed in claim 1 or 2, the content that it is characterized in that aluminum oxide in the Tai-Ace S 150 is 15%～17%.
4, as liquid accelerator for sprayed concrete as described in the claim 3, the content that it is characterized in that aluminum oxide in the Tai-Ace S 150 is 15.5～16.2%.
5, liquid accelerator for sprayed concrete according to claim 1 is characterized in that metal fluoride is selected from basic metal or alkaline-earth metal fluoride.
6, as liquid accelerator for sprayed concrete as described in the claim 5, it is characterized in that metal fluoride is selected from Calcium Fluoride (Fluorspan), Sodium Fluoride or Potassium monofluoride.
7, as liquid accelerator for sprayed concrete as described in claim 1 or 5 or 6, the content that it is characterized in that metal fluoride is 3%～6%.
8, liquid accelerator for sprayed concrete according to claim 1 is characterized in that the amine amine substance is selected from Monoethanolamine MEA BASF, diethanolamine, trolamine or carbonyl diamine.
9, as liquid accelerator for sprayed concrete as described in the claim 8, it is characterized in that the amine amine substance is selected from diethanolamine or trolamine.
10, as liquid accelerator for sprayed concrete as described in claim 1 or 8 or 9, the content that it is characterized in that amine is 2%～8%.
11, liquid accelerator for sprayed concrete according to claim 1 is characterized in that the pH regulator agent is selected from phosphoric acid and/or hydroxycarboxylic acid.
12, as liquid accelerator for sprayed concrete as described in claim 1 or 11, the content that it is characterized in that the pH regulator agent is 1%～5%.
13, liquid accelerator for sprayed concrete according to claim 1, the content that it is characterized in that thickening material is 0.05～0.5%.
14, the making method of any described liquid accelerator for sprayed concrete of claim 1 to 13, its feature is at first water-soluble with fluorochemical, add amine then, and solution is heated to 40～80 ℃, Tai-Ace S 150 is added in the above-mentioned solution then, insulation reaction is to the liquid that becomes homogeneous, adds pH regulator agent, thickening material then and stirs, and the liquid substance that finally obtains homogeneous is a liquid accelerator for sprayed concrete.
15, the application method of any described liquid accelerator for sprayed concrete of claim 1 to 13 is characterized in that liquid accelerator at the nozzle place joining according to 4～9% of cement weight and is used for construction of shotcrete in the mixture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100283211A CN101475335A (en) | 2009-01-13 | 2009-01-13 | Liquid accelerator for sprayed concrete and preparation thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100283211A CN101475335A (en) | 2009-01-13 | 2009-01-13 | Liquid accelerator for sprayed concrete and preparation thereof |
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|---|---|
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Family
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Cited By (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102173630A (en) * | 2011-01-04 | 2011-09-07 | 昆明合起工贸有限公司 | High-performance chlorine-free alkali-free liquid accelerating agent |
| CN102219433A (en) * | 2011-05-04 | 2011-10-19 | 山西潞安环保能源开发股份有限公司 | Low-resilience high-strength sprayed concrete liquid accelerating agent and preparation method thereof |
| CN102964078A (en) * | 2012-12-19 | 2013-03-13 | 哈尔滨工业大学 | Alkali-free liquid accelerator for sprayed concrete |
| CN102992677A (en) * | 2012-09-29 | 2013-03-27 | 北京东方雨虹防水技术股份有限公司 | Alkali-free liquid accelerator and preparation method and application thereof |
| CN103058565A (en) * | 2013-01-07 | 2013-04-24 | 山东科技大学 | Enhanced and low-rebound liquid setting accelerator used in wet spraying process |
| CN103396027A (en) * | 2013-07-25 | 2013-11-20 | 北京市建筑工程研究院有限责任公司 | Preparation method of novel alkali-free liquid accelerator |
| CN103723942A (en) * | 2013-12-31 | 2014-04-16 | 重庆大学 | Hardening accelerator, inorganic heat-insulation mortar based on hardening accelerator and methods for preparing and spraying inorganic heat-insulation mortar |
| RU2543233C2 (en) * | 2013-04-30 | 2015-02-27 | Открытое акционерное общество "Полипласт" (ОАО "Полипласт") | Method to produce complex additive for air placed concrete (versions) |
| CN105130241A (en) * | 2015-07-10 | 2015-12-09 | 山西铁力建材有限公司 | Preparation method of liquid setting accelerator |
| CN105271877A (en) * | 2015-10-27 | 2016-01-27 | 新疆大学 | Liquid quick-setting agent and preparation method thereof |
| CN105601163A (en) * | 2016-01-14 | 2016-05-25 | 泰安市秀特力博岩土工程科技有限公司 | Novel liquid concrete accelerator and preparation method thereof |
| CN106431059A (en) * | 2016-09-09 | 2017-02-22 | 山西科腾环保科技股份有限公司 | Alkali-free liquid accelerating agent for spraying concrete and preparing method thereof |
| CN106630725A (en) * | 2016-12-01 | 2017-05-10 | 江苏苏博特新材料股份有限公司 | Liquid accelerated agent for sprayed concrete and preparation method of liquid accelerated agent |
| CN107721240A (en) * | 2017-11-15 | 2018-02-23 | 莱芜市易和环保科技有限公司 | A kind of alkali-free quick-coagulant and preparation method thereof |
| CN107867807A (en) * | 2017-11-17 | 2018-04-03 | 江苏苏博特新材料股份有限公司 | A kind of alkali-free quick-coagulant with reducing function and preparation method thereof |
| CN107954628A (en) * | 2018-01-19 | 2018-04-24 | 江苏苏博特新材料股份有限公司 | A kind of alkali-free chlorine-free sulfate radical-free liquid accelerator |
| CN108264257A (en) * | 2018-01-08 | 2018-07-10 | 贵州天威建材科技有限责任公司 | A kind of polymer phosphate aluminium series is without chlorine without sulphur alkali-free liquid setting accelerator and preparation method thereof |
| CN108793806A (en) * | 2018-06-25 | 2018-11-13 | 武汉优城科技有限公司 | A kind of alkali-free liquid accelerator and preparation method thereof |
| CN109399999A (en) * | 2018-10-25 | 2019-03-01 | 江苏奥莱特新材料股份有限公司 | A kind of high early-strength low-alkali liquid quick-setting agent of green and preparation method |
| CN110563893A (en) * | 2019-09-12 | 2019-12-13 | 云南凯威特新材料股份有限公司 | Preparation method of rebound inhibitor for sprayed concrete |
| CN110922085A (en) * | 2019-12-16 | 2020-03-27 | 武汉优城科技有限公司 | Aluminum sulfate supersaturated suspension type alkali-free liquid accelerator and preparation method thereof |
| CN111003962A (en) * | 2019-11-03 | 2020-04-14 | 湖南加美乐素新材料股份有限公司 | Alkali-free concrete accelerator and processing method thereof |
| CN111377638A (en) * | 2018-12-29 | 2020-07-07 | 江苏苏博特新材料股份有限公司 | Liquid alkali-free accelerator for improving cohesiveness of sprayed concrete and preparation method thereof |
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Cited By (39)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102173630A (en) * | 2011-01-04 | 2011-09-07 | 昆明合起工贸有限公司 | High-performance chlorine-free alkali-free liquid accelerating agent |
| CN102219433B (en) * | 2011-05-04 | 2015-06-10 | 山西潞安环保能源开发股份有限公司 | Low-resilience high-strength sprayed concrete liquid accelerating agent and preparation method thereof |
| CN102219433A (en) * | 2011-05-04 | 2011-10-19 | 山西潞安环保能源开发股份有限公司 | Low-resilience high-strength sprayed concrete liquid accelerating agent and preparation method thereof |
| CN102992677A (en) * | 2012-09-29 | 2013-03-27 | 北京东方雨虹防水技术股份有限公司 | Alkali-free liquid accelerator and preparation method and application thereof |
| CN102964078A (en) * | 2012-12-19 | 2013-03-13 | 哈尔滨工业大学 | Alkali-free liquid accelerator for sprayed concrete |
| CN103058565A (en) * | 2013-01-07 | 2013-04-24 | 山东科技大学 | Enhanced and low-rebound liquid setting accelerator used in wet spraying process |
| RU2543233C2 (en) * | 2013-04-30 | 2015-02-27 | Открытое акционерное общество "Полипласт" (ОАО "Полипласт") | Method to produce complex additive for air placed concrete (versions) |
| CN103396027B (en) * | 2013-07-25 | 2016-04-06 | 北京市建筑工程研究院有限责任公司 | A kind of preparation method of novel alkali-free liquid accelerator |
| CN103396027A (en) * | 2013-07-25 | 2013-11-20 | 北京市建筑工程研究院有限责任公司 | Preparation method of novel alkali-free liquid accelerator |
| CN103723942A (en) * | 2013-12-31 | 2014-04-16 | 重庆大学 | Hardening accelerator, inorganic heat-insulation mortar based on hardening accelerator and methods for preparing and spraying inorganic heat-insulation mortar |
| CN105130241A (en) * | 2015-07-10 | 2015-12-09 | 山西铁力建材有限公司 | Preparation method of liquid setting accelerator |
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