CN104761171A - Liquid accelerator and preparation method thereof - Google Patents

Liquid accelerator and preparation method thereof Download PDF

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Publication number
CN104761171A
CN104761171A CN201510198106.1A CN201510198106A CN104761171A CN 104761171 A CN104761171 A CN 104761171A CN 201510198106 A CN201510198106 A CN 201510198106A CN 104761171 A CN104761171 A CN 104761171A
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China
Prior art keywords
liquid accelerator
acid
combination
accelerator
defoamer
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Pending
Application number
CN201510198106.1A
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Chinese (zh)
Inventor
张萍
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张萍
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Priority to CN201510198106.1A priority Critical patent/CN104761171A/en
Publication of CN104761171A publication Critical patent/CN104761171A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a liquid accelerator and a preparation method thereof. The liquid accelerator is composed of the following components by weight percentage: 15-30% of aluminium hydroxide, 5-10% of sodium metaaluminate, 5-10% of sodium carbonate, 8-10% of magnesium sulfate, 5-20% of hydroxy carboxylic acid, 0.1-0.4% of defoamer, 1-10% of stabilizer and the balance of water. The liquid accelerator has rapid sprayed concrete setting time and obvious effect for the early strength and the 30-day compressive strength, is good in caking property, low in resilience value, simple in synthetic process, mild in reaction condition and excellent in performance and can realize the green environment-protection non-pollution construction. The effect is better than that of the market liquid accelerator.

Description

Liquid accelerator and preparation method thereof
Technical field
The present invention relates to building material technical field, be specifically related to a kind of liquid accelerator and preparation method thereof.
Background technology
Accelerating chemicals is the admixture that can make concrete or the rapid setting and harden of mortar, is mainly used in sprayed concrete, mortar machine leak stopping emergency work.Liquid accelerator for sprayed concrete, improve the shortcoming that pulvis mixing is uneven, dust is large, construction environment is poor, accelerate the condensation of concrete mix, improve early strength, jetting thickness can be increased like this and shorten spray under time once, greatly extend its use range.
Concrete admixture is building material product indispensable in Process of Engineering Construction, is called as concrete BSA.Sprayed concrete accelerating chemicals is very important a kind of product in concrete admixture.There is very large superiority in the slope retaining that sprayed concrete is constructed compared with large-engineering in tunnel, underground mine and obliquity, to have become in the construction of Tunnel Engineering, underground works and slope support engineering an extremely important and necessary measure.The particularly development of Wet Shotcrete Technology, extends the use range of sprayed concrete greatly.Shotcrete accelerator can accelerate the rate of set of concrete mix, improves early strength, effectively can prevent tunnel or underground mine, side slope, buildings pit foundation generation avalanche, landslide, play the effect of temporary supporting or permanent supporting.Therefore sprayed concrete must reach just end and final set within the time required, and reaches the intensity of regulation.Reach above-mentioned requirements and just must add accelerating chemicals in concrete.
At present, fast liquid accelerator a kind of time of coagulation and preparation method thereof is lacked.
Summary of the invention
Technical problem to be solved by this invention there is provided fast liquid accelerator time of coagulation and preparation method thereof.
To achieve these goals, the present invention is achieved through the following technical solutions: the invention provides a kind of liquid accelerator, and described accelerating chemicals is composed of the following components by mass percentage:
Further, described defoamer is selected from one or both the combination in glycerol fatty acid ester, glycerine.
Further, described hydroxycarboxylic acid is selected from the combination of one or more in citric acid, Whitfield's ointment, lactic acid, formic acid, oxalic acid.
Further, described stablizer is selected from the combination of one or more in urea, formaldehyde, polyacrylamide, diethanolamine, trolamine.
The preparation method of liquid accelerator of the present invention, comprises the following steps:
Tai-Ace S 150, aluminium hydroxide, sodium carbonate, magnesium sulfate are dissolved in hot water, dissolve completely, under whipped state, slowly add hydroxycarboxylic acid, completely to be dissolved, then add defoamer, stablizer successively, be cooled to room temperature after completion of the reaction, prepare product.
Further, stir speed (S.S.) during described stirring is 500-900r/min.
Beneficial effect: the present invention is fast to sprayed concrete time of coagulation, early strength, 30 days ultimate compression strength have obvious effect, cohesiveness is good, springback capacity is low, can realize the pollution-free construction of environmental protection, its synthesis technique is simple, reaction conditions is gentle, is a kind of liquid accelerator of excellent property.Effect is better than market liquid accelerator.Accelerating chemicals of the present invention especially improves final setting time and the ultimate compression strength of cement, is significantly better than prior art.
Embodiment
Further specific descriptions will be done by specific embodiment to the present invention below, but can not be interpreted as it is limiting the scope of the present invention.
Embodiment 1
The invention provides a kind of liquid accelerator, described accelerating chemicals is composed of the following components by mass percentage:
Described defoamer is selected from the combination of glycerol fatty acid ester and glycerine two kinds.
Described hydroxycarboxylic acid is selected from the combination of citric acid, Whitfield's ointment, lactic acid, formic acid, oxalic acid five kinds.
Described stablizer is selected from the combination of urea, formaldehyde and polyacrylamide three kinds.
The preparation method of liquid accelerator of the present invention, comprises the following steps:
Tai-Ace S 150, aluminium hydroxide, sodium carbonate, magnesium sulfate are dissolved in hot water, dissolve completely, under whipped state, slowly add hydroxycarboxylic acid, completely to be dissolved, then add defoamer, stablizer successively, be cooled to room temperature after completion of the reaction, prepare product.
Stir speed (S.S.) during described stirring is 500r/min.
The present invention is fast to sprayed concrete time of coagulation, early strength, 30 days ultimate compression strength have obvious effect, cohesiveness is good, springback capacity is low, can realize the pollution-free construction of environmental protection, its synthesis technique is simple, and reaction conditions is gentle, is a kind of liquid accelerator of excellent property.Effect is better than market liquid accelerator.Accelerating chemicals of the present invention especially improves final setting time and the ultimate compression strength of cement, is significantly better than prior art.
Embodiment 2
Embodiment 2 is with the difference of embodiment 1: the invention provides a kind of liquid accelerator, described accelerating chemicals is composed of the following components by mass percentage:
Described defoamer is glycerol fatty acid ester.
Described hydroxycarboxylic acid is selected from citric acid and salicylic combination.
Described stablizer is selected from the combination of urea, formaldehyde, polyacrylamide, diethanolamine, trolamine five kinds.
The preparation method of liquid accelerator of the present invention, stir speed (S.S.) during described stirring is 700r/min.
Embodiment 3
Embodiment 3 is with the difference of embodiment 1: the invention provides a kind of liquid accelerator, described accelerating chemicals is composed of the following components by mass percentage:
Described defoamer is glycerine.
Described hydroxycarboxylic acid is selected from the combination of one or more in citric acid, Whitfield's ointment, lactic acid, formic acid, oxalic acid.
Described stablizer is selected from the combination of diethanolamine, trolamine two kinds.The preparation method of liquid accelerator of the present invention, stir speed (S.S.) during described stirring is 900r/min.
Test 1
Accelerating chemicals homogeneity index is as shown in table 1:
Table 1
Index
Density Should institute of factory controlling valu ± 0.02g/cm 2Within
Chloride ion content The maximum controlling valu of factory should be less than
Total alkali content The maximum controlling valu of factory should be less than
PH value Should within factory controlling valu ± 1
Fineness
Water ratio
Solid content The minimum controlling valu of factory should be greater than
Mix accelerating chemicals only to starch and the performance of hardened mortar should meet table 2 requirement, mix accelerating chemicals only starch and the performance requriements of hardened mortar as shown in table 2:
Table 2
Join in cement slurry by accelerating chemicals according to 4% of cement weight, above-mentioned water consumption contains the contained water in liquid accelerator simultaneously.Cement paste time of coagulation and mortar strength test have been carried out by commercially available Liquid Aluminate Accelerating Additive simultaneously.
With reference to " sprayed concrete accelerating chemicals " (JC477-2005), accelerating chemicals of the present invention and market liquid accelerator MEYCO SA160 are contrasted, dependence test result is as shown in table 3, above embodiment on the clean slurry time of coagulation of liquid accelerator and the impact of mortar strength as shown in table 3:
Table 3
As can be seen from Table 3, the present invention has obvious effect to sprayed concrete time of coagulation, early strength, 30 days ultimate compression strength, and effect is better than market liquid accelerator.Accelerating chemicals of the present invention especially improves final setting time and the ultimate compression strength of cement, is significantly better than prior art.
More than show and describe ultimate principle of the present invention, principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification sheets just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and application claims protection domain is defined by appending claims, specification sheets and equivalent thereof.

Claims (6)

1. a liquid accelerator, is characterized in that: described accelerating chemicals is composed of the following components by mass percentage:
2. liquid accelerator according to claim 1, is characterized in that: described defoamer is selected from one or both the combination in glycerol fatty acid ester, glycerine.
3. liquid accelerator according to claim 1, is characterized in that: described hydroxycarboxylic acid is selected from the combination of one or more in citric acid, Whitfield's ointment, lactic acid, formic acid, oxalic acid.
4. liquid accelerator according to claim 1, is characterized in that: described stablizer is selected from the combination of one or more in urea, formaldehyde, polyacrylamide, diethanolamine, trolamine.
5. the preparation method of the liquid accelerator described in any one of claims 1 to 3, is characterized in that comprising the following steps:
Tai-Ace S 150, aluminium hydroxide, sodium carbonate, magnesium sulfate are dissolved in hot water, dissolve completely, under whipped state, slowly add hydroxycarboxylic acid, completely to be dissolved, then add defoamer, stablizer successively, be cooled to room temperature after completion of the reaction, prepare product.
6. the preparation method of liquid accelerator according to claim 5, is characterized in that: stir speed (S.S.) during described stirring is 500-900r/min.
CN201510198106.1A 2015-04-24 2015-04-24 Liquid accelerator and preparation method thereof Pending CN104761171A (en)

Priority Applications (1)

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CN201510198106.1A CN104761171A (en) 2015-04-24 2015-04-24 Liquid accelerator and preparation method thereof

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Application Number Priority Date Filing Date Title
CN201510198106.1A CN104761171A (en) 2015-04-24 2015-04-24 Liquid accelerator and preparation method thereof

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CN104761171A true CN104761171A (en) 2015-07-08

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106045366A (en) * 2016-05-30 2016-10-26 江苏名和集团有限公司 Concrete accelerator
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
CN109748532A (en) * 2017-12-13 2019-05-14 江苏苏博特新材料股份有限公司 A kind of alkali-free quick-coagulant and the preparation method and application thereof
CN111592262A (en) * 2020-06-10 2020-08-28 山西黄腾化工有限公司 Concrete liquid accelerator

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1753848A (en) * 2003-02-25 2006-03-29 建筑研究及技术有限责任公司 Accelerator admixture

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1753848A (en) * 2003-02-25 2006-03-29 建筑研究及技术有限责任公司 Accelerator admixture

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106045366A (en) * 2016-05-30 2016-10-26 江苏名和集团有限公司 Concrete accelerator
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
CN109748532A (en) * 2017-12-13 2019-05-14 江苏苏博特新材料股份有限公司 A kind of alkali-free quick-coagulant and the preparation method and application thereof
CN111592262A (en) * 2020-06-10 2020-08-28 山西黄腾化工有限公司 Concrete liquid accelerator

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Application publication date: 20150708