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CN100450956C - Alkali-free liquid setting accelerator for spray concrete - Google Patents

Alkali-free liquid setting accelerator for spray concrete Download PDF

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Publication number
CN100450956C
CN100450956C CNB2006100982960A CN200610098296A CN100450956C CN 100450956 C CN100450956 C CN 100450956C CN B2006100982960 A CNB2006100982960 A CN B2006100982960A CN 200610098296 A CN200610098296 A CN 200610098296A CN 100450956 C CN100450956 C CN 100450956C
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CN
China
Prior art keywords
alkali
free liquid
setting accelerator
liquid setting
spray concrete
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Application number
CNB2006100982960A
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Chinese (zh)
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CN1974466A (en
Inventor
周静
刘加平
缪昌文
张建雄
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Jiangsu Bote New Materials Co Ltd
Bote New Materials Taizhou Co Ltd
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Jiangsu Bote New Materials Co Ltd
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Priority to CNB2006100982960A priority Critical patent/CN100450956C/en
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Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B40/00Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C04B40/0028Aspects relating to the mixing step of the mortar preparation
    • C04B40/0039Premixtures of ingredients

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  • 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

Alkali-free liquid setting accelerator for spray concrete
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 one aggregate reaction.
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 one aggregate reaction 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 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 is for containing 16%-17%Al 2O 3Tai-Ace S 150.
4, alkali-free liquid setting accelerator for spray concrete as claimed in claim 1, the 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 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 content that it is characterized in that stablizer is 0-2%.
8,, it is characterized in that stablizer is the polyethers 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 defoamer is not siliceous defoamer.
10, the application method of 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 is joined in the jet cement composition at the nozzle place, the preparation sprayed concrete, consumption is counted 4-12% with cement weight as benchmark.
CNB2006100982960A 2006-12-07 2006-12-07 Alkali-free liquid setting accelerator for spray concrete Active CN100450956C (en)

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
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CN100450956C true CN100450956C (en) 2009-01-14

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Families Citing this family (22)

* Cited by examiner, † Cited by third party
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
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
CN102229477B (en) * 2011-04-29 2013-04-03 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
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
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
CN105503016B (en) * 2015-12-18 2017-12-26 江苏中铁奥莱特新材料有限公司 A kind of high-strength is without sulphur 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
CN107840593B (en) * 2017-11-17 2020-01-14 武汉理工大学 Early-strength liquid alkali-free accelerator for sprayed concrete and preparation method thereof
CN110330255B (en) * 2019-07-02 2021-08-31 安徽海螺新材料科技有限公司 Coagulation-promoting 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
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
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
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
CN112811848B (en) * 2021-01-14 2022-10-11 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
CN113213805A (en) * 2021-03-31 2021-08-06 山西佳维新材料股份有限公司 Quick early-strength alkali-free fluorine-free chlorine-free liquid accelerator 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
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
CN115353317B (en) * 2022-10-21 2023-01-13 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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CN1478750A (en) * 2003-06-30 2004-03-03 徐州华泰混凝土外加剂厂 Jet concrete fast hardening agent
CN1596233A (en) * 2001-11-28 2005-03-16 建筑研究及技术有限责任公司 Cement accelerator and method
CN1621381A (en) * 2003-11-28 2005-06-01 王衡 Non-alkali accelerator for concrete preparation
CN1753848A (en) * 2003-02-25 2006-03-29 建筑研究及技术有限责任公司 Accelerator admixture
CN1792959A (en) * 2005-11-29 2006-06-28 尚红利 Alkali-free speed coagulating agent

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CN1596233A (en) * 2001-11-28 2005-03-16 建筑研究及技术有限责任公司 Cement accelerator and method
CN1753848A (en) * 2003-02-25 2006-03-29 建筑研究及技术有限责任公司 Accelerator admixture
CN1478750A (en) * 2003-06-30 2004-03-03 徐州华泰混凝土外加剂厂 Jet concrete fast hardening agent
CN1621381A (en) * 2003-11-28 2005-06-01 王衡 Non-alkali accelerator for concrete preparation
CN1792959A (en) * 2005-11-29 2006-06-28 尚红利 Alkali-free speed coagulating agent

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Assignee: Nanjing Daolu Construction Material Factory

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