CN106517851A - Liquid setting accelerator and application method thereof - Google Patents
Liquid setting accelerator and application method thereof Download PDFInfo
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- CN106517851A CN106517851A CN201610942831.XA CN201610942831A CN106517851A CN 106517851 A CN106517851 A CN 106517851A CN 201610942831 A CN201610942831 A CN 201610942831A CN 106517851 A CN106517851 A CN 106517851A
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- liquid accelerator
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- potassium
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Classifications
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- 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
-
- 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
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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 invention discloses a liquid setting accelerator and an application method thereof. The liquid setting accelerator at least comprises aluminum sulfate, amine substances, a sulfonate polymer and water. The application method comprises the following steps: adding the liquid setting accelerator which accounts for 3-10 wt% of cement into a concrete mixture, and applying the concrete mixture to shotcrete construction. The liquid setting accelerator has the advantages of environment friendliness and favorable applicability, and can easily implement industrial production.
Description
Technical field
The present invention relates to additives for building materials field, relates in particular to a kind of liquid accelerator and its application process.
Background technology
At present, gunite concrete obtains substantial amounts of application in tunneling and rock support.Concrete liquid rapid hardening
Agent is topmost to act on the condensation for being just to speed up concrete mix, improves early strength.But, traditional liquid accelerator is main
For strong alkaline substances such as sodium aluminate, sodium silicate, with stronger caustic corrosion, can be to workmen and environmental pollution, together
When can cause late strength of concrete reduce by 30% even more high.
In order to solve above-mentioned technical problem, people begin one's study no chlorine and low alkali type liquid accelerator, to reduce strong basicity thing
The injury of confrontation workmen, and do not affect the later strength of concrete to increase.In patent CN200580025329.2, Germany
DEGUSSA develops a kind of " for the liquid accelerator of gunite concrete ", it by aluminum sulfate,
Dissolving aluminium hydroxide, hydroxy carboxylic acid are soluble in water to be obtained.In patent CN200480019172.8, NEC chemical industry strain formula
Commercial firm has been invented by the liquid accelerator of sulfur, aluminum and alkali-metal elemental composition and complex-forming agents.Patent
In CN200810203051.9, Tongji University Qin Lian etc. has been invented by aluminum sulfate, sodium fluoride, triethanolamine and polyacrylamide
The liquid accelerator of composition.Although liquid accelerator exploitation both at home and abroad has been achieved for greater advance at present, but still presence is mixed
The shortcomings of dosage height, poor storage stability, high rebound degree.
The content of the invention
It is an object of the invention to provide a kind of low-dosage with high storage stability, low resilient rate, high early strength
The liquid accelerator increased with high later strength and its application process.
The object of the present invention is achieved like this：
A kind of liquid accelerator, feature are the liquid accelerator at least while containing following raw material, agitated mixing
Form；Its raw material is：Aluminum sulfate, amine substance, sulfonate polymer and water；
Contain the following construction unit I represented by formula (1) in described sulfonate polymer：
Wherein：R1Represent the alkyl group of hydrogen or 1-10 carbon atom, R2Represent N represents the integer of 0-10, R3Represent the alkyl of hydrogen or 1-10 carbon atom
Group, R4And R5Represent the alkylidene group of 1-10 carbon atom.
In described aluminum sulfate, alumina content is 14%～18%.
Described amine substance is selected from monoethanolamine, diethanolamine, triethanolamine, dimethylethanolamine, diethylaluminum ethoxide
Amine, methyl diethanolamine, ethyldiethanolamine, monoisopropanolamine, diisopropanolamine (DIPA), triisopropanolamine, dimethylisopro panolamine,
Diethyl isopropanolamine, methyl diisopropanolamine (DIPA), ethyl diisopropanolamine (DIPA) or carbonyl diamine.
The weight average molecular weight of described sulfonate polymer is 300,000～10,000,000, and the structure list represented by formula (1)
The molar percentage of first I is 10%～100%.
Containing sodium fluoride, potassium fluoride, Afluon (Asta), calcium fluoride, prodan, magnesium fluosilicate etc. in described liquid accelerator
One or more in fluorine compounds.
Containing the one kind in the aluminium compounds such as aluminium hydroxide, aluminium oxide, aluminum nitrate, aluminum chloride in described liquid accelerator
Or it is various.
In described liquid accelerator containing Lithium hydrate, sodium hydroxide, potassium hydroxide, lithium carbonate, sodium carbonate,
Sodium bicarbonate, potassium carbonate, potassium bicarbonate, sodium metasilicate, sodium silicate, potassium metasilicate, potassium silicate, calcium oxide, hydrogen-oxygen
Change one or more in the alkaline matters such as calcium.
In described liquid accelerator, the consumption of each raw material is：
Addition of aluminum sulfate is 35%～65%；
Sulfonate polymer consumption is 0.01%～3.0%；
Amine substance consumption is 2%～15%；
Fluorine compounds consumption is 0%～20%；
Aluminium compound consumption is 0%～15%；
Alkaline matter consumption is 0%～10%；
Remaining is water, and gross weight is for absolutely.
In described liquid accelerator, the consumption of each raw material is：
Addition of aluminum sulfate is 45%～65%；
Sulfonate polymer consumption is 0.03%～2.0%；
Amine substance consumption is 4%～8%；
Fluorine compounds consumption is 0%～10%；
Aluminium compound consumption is 0%～10%；
Alkaline matter consumption is 0%～6%；
Remaining is water, and gross weight is for absolutely.
The application process of the liquid accelerator, its feature are according to the 3～10% of cement weight by liquid accelerator
It is used for construction of shotcrete in being added to concrete mix.
The present invention compared with prior art, has the advantage that：
1st, environmental protection.The present invention is faintly acid liquid, will not produce corrosivity harm.
2nd, application performance is excellent.The present invention have low-dosage, rapid hardening effect is good, early strength is high, later strength free of losses,
The low performance characteristics of rebound of shotcrete rate.
3rd, it is easy to industrialized production.The present invention only need to be mixed with can be produced at normal temperatures.
Specific embodiment
By following examples, the present invention is further described, but does not produce any restriction to the present invention.
Embodiment 1
By 5 parts of diethanolamine, 1 part of sulfonate polymer A (acrylamide dimethyl propylene sulfonic acid homopolymer, molecular weight 120
Ten thousand) it is dissolved in 39 parts of water, opens stirring, at 23 DEG C of room temperature, adds 55 parts of Patent alums, stirring to be allowed within 2 hours transparent
Homogeneous solution, obtains liquid accelerator of the invention, is designated as SNJ-1.
Embodiment 2
By 5 parts of triethanolamine, 5 parts of sodium fluoride, 1 part of sulfonate polymer B (acrylic acid-acrylamide dimethyl propylene sulfonic acid
Copolymer, wherein acrylic acid are 6 with the mol ratio of acrylamide dimethyl propylene sulfonic acid：4, ten thousand) molecular weight of copolymer 60 is dissolved in 39
In part water, stirring is opened, add 50 parts of Patent alums, stirring to be allowed to into clear homogeneous solution in 1 hour at 50 DEG C, obtain originally
The liquid accelerator of invention, is designated as SNJ-2.
Embodiment 3
By 8 parts of dimethylethanolamines, 3 parts of sodium fluoride, 0.5 part of sulfonate polymer C (acrylic acid-acrylamide dimethyl
Sulphonic acid copolymer, wherein acrylic acid are 9 with the mol ratio of acrylamide dimethyl propylene sulfonic acid：1, molecular weight of copolymer 40 is ten thousand)
Be dissolved in 37 parts of water, open stirring, at 40 DEG C, add 50 parts of Patent alums, stirring 1.5 parts of phosphorus to be added after 1 hour
Acid, continues stirring 20min and is allowed to into clear homogeneous solution, obtain liquid accelerator of the invention, be designated as SNJ-3.
Embodiment 4
By 3 parts of diethanolamine, 3 parts of dimethylethanolamines, 2 parts of sodium fluoride, 0.1 part of sulfonate polymer D (acrylamide-
Acrylamide dimethyl propylene sulfonic acid copolymer, wherein acrylamide are 2 with the mol ratio of acrylamide dimethyl propylene sulfonic acid：8, altogether
Ten thousand) polymers molecular weight 500 is dissolved in 29.9 parts of water, opens stirring, adds 62 parts of Patent alums at 80 DEG C, and stirring 1 is little
When after add 2 parts of phosphoric acid, continue stirring 20min and be allowed to into clear homogeneous solution, obtain liquid accelerator of the invention, be designated as
SNJ-4。
Embodiment 5
By 5 parts of diethanolamine, 5 parts of triethanolamine, 3 parts of sodium fluoride, 0.3 part of sulfonate polymer D (nitrile-acrylamide-acrylic acid
Amide dimethyl propylene sulfonic acid copolymer, wherein acrylamide are 2: 8 with the mol ratio of acrylamide dimethyl propylene sulfonic acid, copolymer
Ten thousand) molecular weight 500 is dissolved in 24.7 parts of water, opens stirring, adds 60 parts of Patent alums, after stirring 1 hour at 40 DEG C
2 parts of phosphoric acid are added, is continued stirring 20min and is allowed to into clear homogeneous solution, obtain liquid accelerator of the invention, be designated as SNJ-5.
Embodiment 6
By 5 parts of diisopropanolamine (DIPA)s, 5 parts of sodium fluoride, 1 part of sulfonate polymer E (sodium p styrene sulfonate homopolymer, copolymerization
Ten thousand) thing molecular weight 30 is dissolved in 28 parts of water, opens stirring, adds 60 parts of Patent alums, after stirring 1 hour again at 30 DEG C
1 part of phosphoric acid is added, is continued stirring 20min and is allowed to into clear homogeneous solution, obtain liquid accelerator of the invention, be designated as SNJ-6.
Embodiment 7
By 5 parts of diisopropanolamine (DIPA)s, 5 parts of magnesium fluosilicates, 1 part of sulfonate polymer F (acrylic acid and 3- allyloxy -2- hydroxyls
Base -1- propanesulfonates mol ratio for 5: 5 copolymer, ten thousand) molecular weight 200 is dissolved in 28 parts of water, opens stirring, is added at 70 DEG C
60 parts of Patent alums, stirring add 1 part of phosphoric acid after 1 hour, continue stirring 20min and be allowed to into clear homogeneous solution,
Liquid accelerator of the invention is obtained, SNJ-7 is designated as.
Comparative example 1
5 parts of diethanolamine are dissolved in 40 parts of water, stirring is opened, 55 parts of Patent alums at 23 DEG C of room temperature, are added,
Stirring is allowed to into clear homogeneous solution in 2 hours, obtains liquid accelerator, is designated as SJ-1.
Comparative example 2
5 parts of triethanolamine, 5 parts of sodium fluoride, 0.3 part of polyacrylamide (molecular weight 5,000,000) are dissolved in 39.7 parts of water, are opened
Stirring is opened, at 70 DEG C, adds 50 parts of Patent alums, stirring to be allowed to into clear homogeneous solution within 1 hour, obtain liquid accelerator,
It is designated as SJ-2.
Sample is put in tool plug graduated cylinder, is placed on and is avoided 60 days being stood at sunshine shining directly, observes storage stability, record
Layering and precipitation status, the results are shown in Table 1.
The storage stability test result of 1 various liquid accelerators of table
Note：◎ is indicated without layering or is precipitated；Zero represents a small amount of layering or precipitates；× represent layering or precipitation capacity more than 5%.
By JC477-2005《Liquid accelerator for sprayed concrete》Standard is to the liquid accelerator in above example
SNJ-1～SNJ-7, comparative example liquid accelerator SJ-1, SJ-2 and commercial liquid accelerator S-1 carry out volume, setting time, 1
The performance test such as its comprcssive strength and 28 days compressive strength rates, obtains the results are shown in Table 2.
The key property of 2 various liquid accelerators of table
Claims (10)
1. a kind of liquid accelerator, it is characterised in that the liquid accelerator at least while contains following raw material, agitated mixing
Form；Its raw material is：Aluminum sulfate, amine substance, sulfonate polymer and water；
Contain the following construction unit I represented by formula (1) in described sulfonate polymer：
Wherein：R1Represent the alkyl group of hydrogen or 1-10 carbon atom, R2Represent N represents the integer of 0-10, R3Represent the alkyl of hydrogen or 1-10 carbon atom
Group, R4And R5Represent the alkylidene group of 1-10 carbon atom.
2. liquid accelerator according to claim 1, it is characterised in that alumina content is 14% in described aluminum sulfate
～18%.
3. liquid accelerator according to claim 1, it is characterised in that the amine substance is selected from monoethanolamine, diethanol
Amine, triethanolamine, dimethylethanolamine, diethyl ethylene diamine, methyl diethanolamine, ethyldiethanolamine, monoisopropanolamine, two
Isopropanolamine, triisopropanolamine, dimethylisopro panolamine, diethyl isopropanolamine, methyl diisopropanolamine (DIPA), ethyl diisopropanol
Amine or carbonyl diamine.
4. liquid accelerator according to claim 1, it is characterised in that the weight average molecular weight of described sulfonate polymer
For 300,000～10,000,000, and the molar percentage of the construction unit I represented by formula (1) is 10%～100%.
5. the liquid accelerator according to claim 1-4 any one, it is characterised in that contain in described liquid accelerator
One or more had in sodium fluoride, potassium fluoride, Afluon (Asta), calcium fluoride, prodan, magnesium fluosilicate fluorine compounds.
6. the liquid accelerator according to claim 1-5 any one, it is characterised in that contain in described liquid accelerator
One or more had in the aluminium compounds such as aluminium hydroxide, aluminium oxide, aluminum nitrate, aluminum chloride.
7. the liquid accelerator according to claim 1-6 any one, it is characterised in that contain in described liquid accelerator
Have Lithium hydrate, sodium hydroxide, potassium hydroxide, lithium carbonate, sodium carbonate, sodium bicarbonate, potassium carbonate, potassium bicarbonate, sodium metasilicate,
One or more in sodium silicate, potassium metasilicate, potassium silicate, calcium oxide, calcium hydroxide alkaline matter.
8. liquid accelerator according to claim 1, it is characterised in that the use of each raw material in described liquid accelerator
Measure and be：
Addition of aluminum sulfate is 35%～65%；
Sulfonate polymer consumption is 0.01%～3.0%；
Amine substance consumption is 2%～15%；
Fluorine compounds consumption is 0%～20%；
Aluminium compound consumption is 0%～15%；
Alkaline matter consumption is 0%～10%；
Remaining is water, and gross weight is for absolutely.
9. liquid accelerator according to claim 1, it is characterised in that the use of each raw material in described liquid accelerator
Measure and be：
Addition of aluminum sulfate is 45%～65%；
Sulfonate polymer consumption is 0.03%～2.0%；
Amine substance consumption is 4%～8%；
Fluorine compounds consumption is 0%～10%；
Aluminium compound consumption is 0%～10%；
Alkaline matter consumption is 0%～6%；
Remaining is water, and gross weight is for absolutely.
10. the application process of liquid accelerator described in a kind of claim 1, it is characterised in that by liquid accelerator according to cement weight
The 3～10% of amount are used for construction of shotcrete in being added to concrete mix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610942831.XA CN106517851B (en) | 2016-10-26 | 2016-10-26 | A kind of liquid accelerator and its application method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610942831.XA CN106517851B (en) | 2016-10-26 | 2016-10-26 | A kind of liquid accelerator and its application method |
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| Publication Number | Publication Date |
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| CN106517851A true CN106517851A (en) | 2017-03-22 |
| CN106517851B CN106517851B (en) | 2018-11-16 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107500592A (en) * | 2017-09-27 | 2017-12-22 | 四川铁科新型建材有限公司 | A kind of alkali-free quick-coagulant composition solution and preparation method thereof |
| CN108046641A (en) * | 2018-01-17 | 2018-05-18 | 石家庄学院 | A kind of compound concrete anti-corrosive rust inhibitor and preparation method |
| CN111646728A (en) * | 2020-07-01 | 2020-09-11 | 中建材中岩科技有限公司 | Quick-setting high-strength alkali-free liquid accelerator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63291839A (en) * | 1987-05-25 | 1988-11-29 | Denki Kagaku Kogyo Kk | Hardening accelerator |
| CN101423356A (en) * | 2008-11-20 | 2009-05-06 | 同济大学 | Environment-friendly type alkali-free liquid accelerator for sprayed concrete and preparation method 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 |
| CN102745937A (en) * | 2011-04-21 | 2012-10-24 | 高永会 | Alkali and chlorine free liquid setting accelerator |
-
2016
- 2016-10-26 CN CN201610942831.XA patent/CN106517851B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63291839A (en) * | 1987-05-25 | 1988-11-29 | Denki Kagaku Kogyo Kk | Hardening accelerator |
| CN101423356A (en) * | 2008-11-20 | 2009-05-06 | 同济大学 | Environment-friendly type alkali-free liquid accelerator for sprayed concrete and preparation method thereof |
| CN102745937A (en) * | 2011-04-21 | 2012-10-24 | 高永会 | Alkali and chlorine free liquid setting accelerator |
| 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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107500592A (en) * | 2017-09-27 | 2017-12-22 | 四川铁科新型建材有限公司 | A kind of alkali-free quick-coagulant composition solution and preparation method thereof |
| CN108046641A (en) * | 2018-01-17 | 2018-05-18 | 石家庄学院 | A kind of compound concrete anti-corrosive rust inhibitor and preparation method |
| CN111646728A (en) * | 2020-07-01 | 2020-09-11 | 中建材中岩科技有限公司 | Quick-setting high-strength alkali-free liquid accelerator |
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| Publication number | Publication date |
|---|---|
| CN106517851B (en) | 2018-11-16 |
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