CN1792959A - Alkali-free speed coagulating agent - Google Patents
Alkali-free speed coagulating agent Download PDFInfo
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- CN1792959A CN1792959A CN 200510107216 CN200510107216A CN1792959A CN 1792959 A CN1792959 A CN 1792959A CN 200510107216 CN200510107216 CN 200510107216 CN 200510107216 A CN200510107216 A CN 200510107216A CN 1792959 A CN1792959 A CN 1792959A
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Abstract
An alkali-free quick-hardening agent for concrete is proportionally prepared from aluminum sulfate and organic amine through dissolving organic amine and suspending agent in water to obtain solution, grinding aluminum sulfate and sieving, dissolving it in said solution at 40-100 deg.C while strong high-speed stirring, and emulsifier to obtain liquid-state quick-hardening agent, or grinding aluminum sulfate and organic amine and sieving to obtain solid one. It is suitable for sprayed concrete.
Description
Technical field:
The present invention relates to a kind of Hardenfast, particularly relate to a kind of alkali-free quick-coagulant and working method thereof, belong to building material technical field.
Background technology:
A certain amount of admixture of admixture can improve the performance of concrete material on request in concrete, thereby makes the concrete prepared adapt to new construction technology and satisfy various construction requirements.The a certain amount of accelerating chemicals of admixture in concrete can make very quick setting sclerosis in the very short time behind the concrete blunge of being prepared, and reach certain intensity as early as possible.Mix the concrete of accelerating chemicals because setting and harden speed is very fast, be suitable for sprayed construction technology and quick the repairing and the sealing stoppage engineering.Because the concrete coagulation speed of mixing accelerating chemicals is fast, strength development is also very fast, can produce certain defective to its microtexture unavoidably, generally has only and does not mix person's 70～80% so mix the concrete later strength of accelerating chemicals.
Because at present the accelerating chemicals that uses is mostly based on calcium chloride, yellow soda ash etc., and the accelerating chemicals volume generally accounts for 4～8% of cement quality, and like this, the admixture accelerating chemicals is equivalent to bring into the more Cl of inside concrete
-And alkalimetal ion.As everyone knows, Cl
-Reinforcing bar to inside concrete has the effect of quickening corrosion, there is the then very easy alkali that causes in alkaline, inside concrete is gathered materials to the performance degradation at slurry interface, suction back even generation are expanded, make concrete structure generation catastrophic failure, moreover yellow soda ash alkalescence itself is strong, can cause certain injury to positions such as workman's eyes, skins during construction.The development and research of accelerating chemicals new variety is now just turning to emphasis not only will shorten time of coagulation, promote the early strength development, improve concrete cohesiveness, concrete is not easy to have a rebound the whereabouts phenomenon and causes waste when making sprayed construction, more priorly also is to reduce as much as possible Cl
-With the content of highly basic metal ion, just manage to replace materials such as traditional calcium chloride, yellow soda ash with other chemical substance, make accelerating chemicals present non-alkalescence, thereby make the use of accelerating chemicals more effective, safer.Chinese patent CN1559965A, application number are 200410016577.8, denomination of invention is: in the patent application of " Chlorine-free type high-performance concrete accelerator ", a kind of Hardenfast is disclosed, it is made up of naphthalene sulfonic acidformaldehyde condensation product high efficiency water reducing agent, calcium formiate, Sodium Fluoride, Mierocrystalline cellulose and water, the incorporation of accelerating chemicals is 2～7% of a cement weight, in this invention, the naphthalene sulfonic acidformaldehyde condensation product high efficiency water reducing agent is a kind of aniorfic surfactant, its cost is higher, does not also have other relevant report about alkali-free quick-coagulant at present both at home and abroad.
Summary of the invention:
The objective of the invention is: overcome the deficiencies in the prior art, the alkali-free quick-coagulant and the working method thereof that provide a kind of alkali-free, no chlorine, have no irritating odor, cohesiveness are good, springback capacity is low, the later strength storage rate is high.
The objective of the invention is to be achieved through the following technical solutions:
A kind of alkali-free quick-coagulant, main component are Tai-Ace S 150 and organic amine, Tai-Ace S 150: the weight ratio of organic amine is 30～65: 2～8.
Described organic amine is a polyacrylamide, two alkanolamines, or be trialkanolamine, or be Monoethanolamine MEA BASF, or be diethanolamine, or be trolamine, or be solid-state alkylamine, or be urea.
A kind of liquid accelerating chemicals of alkali-free that contains above-mentioned accelerating chemicals is a unit with the weight part, contains 30～65 parts in Tai-Ace S 150,2～8 parts of organic amines, 1～5 part of suspension agent, 20～35 parts in water.
Described organic amine is polyacrylamide, or is urea, or is alkanolamine, or is thanomin; Described suspension agent is a phosphoric acid, or is sepiolite, or is aluminum hydroxide gel, or is silicon sol.
Described alkanolamine is two alkanolamines, or is trialkanolamine; Described thanomin is a Monoethanolamine MEA BASF, or is diethanolamine, or is trolamine.
The working method of the liquid accelerating chemicals of a kind of above-mentioned alkali-free, its concrete steps are:
A. take by weighing the Tai-Ace S 150 of described weight part,, cross 80～300 mesh sieves through grinding processing;
B. the Tai-Ace S 150 after will grinding adds in the mixed solution of organic amine, suspension agent and water of described weight part, dissolves under 40～100 ℃ of temperature condition; Or the Tai-Ace S 150 after will grinding earlier adds in the water of described weight part, adds the organic amine and the suspension agent of described weight part after the dissolving again;
C. at rotating speed powerful the stirring 10～30 minutes under 800～10000 rev/mins the condition with high speed agitator simultaneously;
D. use mulser emulsification 5～10 minutes after stirring again, promptly obtain the liquid accelerating chemicals of needed alkali-free.
A kind of no dry alkaline powder accelerating chemicals is a unit with the weight part, contains 65～80 parts in Tai-Ace S 150,5～20 parts of organic amines.
Described organic amine is a polyacrylamide, two alkanolamines, or be trialkanolamine, or be Monoethanolamine MEA BASF, or be diethanolamine, or be trolamine, or be solid-state alkylamine, or be urea.
A kind of working method of above-mentioned no dry alkaline powder accelerating chemicals, its concrete steps are: take by weighing the Tai-Ace S 150 and the organic amine of described weight part, through grinding processing, cross 80～300 mesh sieves, promptly obtain needed no dry alkaline powder accelerating chemicals.
Positive beneficial effect of the present invention is:
1. alkali-free quick-coagulant of the present invention, alkali-free, no chlorine, have no irritating odor, cohesiveness is good, springback capacity is low, later strength storage rate height, impervious rank height, marketable value is considerable.
2. alkali-free quick-coagulant of the present invention, staging life, is longer, can resist variation of temperature, and does not have alkalescence fully, adds alkali-free quick-coagulant of the present invention in sprayed concrete, can bring Working environment preferably.
3. alkali-free quick-coagulant of the present invention can make concrete condense rapidly at short notice and comparatively fast sets up intensity, be fit to sprayed construction technology and special engineerings such as repairing, sealing leak stopping, and this accelerating chemicals is less relatively to the negative impact of late strength of concrete.
4. alkali-free quick-coagulant of the present invention to the effect of inside concrete reinforcing bar non-corroding, is widely used in engineerings such as tunnel, culvert, bridge, supporting and repairing, can produce in enormous quantities for concrete admixture manufacturer.
A: alkali-free quick-coagulant of the present invention obtains following result according to the inspecting standard of GB/T8077-2000:
Total alkali content≤0.5%;
Cl
-: do not have;
Springback capacity≤10;
Later strength storage rate 〉=90%;
Impervious grade: can reach 8 grades.
B:, obtain following result according to the inspecting standard of DL/T5181-2003:
The C30 spray steel fibre concrete of not mixing alkali-free quick-coagulant of the present invention is respectively 44.7MPa, 47.2MPa 7 days, 28 days ultimate compression strength;
The liquid accelerating chemicals 2.5% of admixture alkali-free of the present invention, the ultimate compression strength at 7 days, 28 days is respectively 37.5MPa, 40.4MPa;
The liquid accelerating chemicals 5.0% of admixture alkali-free of the present invention, the ultimate compression strength at 7 days, 28 days is respectively 40.3MPa, 44.0MPa.
By above assay as can be known: alkali-free quick-coagulant coincidence detection of the present invention requirement is up to state standards.
Embodiment:
Embodiment 1: the liquid accelerating chemicals of a kind of alkali-free is a unit with the weight part, contains 30 parts in Tai-Ace S 150,2 parts of two alkanolamines, 1 part of silicon sol, 20 parts in water.
The working method of the liquid accelerating chemicals of above-mentioned alkali-free, its concrete steps are:
A. take by weighing the Tai-Ace S 150 of described weight part,, cross 80～300 mesh sieves through grinding processing;
B. the Tai-Ace S 150 after will grinding adds in the mixed solution of two alkanolamines, silicon sol and water of described weight part, dissolves under 40～100 ℃ of temperature condition; Or the Tai-Ace S 150 after will grinding earlier adds in the water of described weight part, adds two alkanolamines and the silicon sol of described weight part after the dissolving again;
C. at rotating speed powerful the stirring 10～30 minutes under 800～10000 rev/mins the condition with high speed agitator simultaneously;
D. use mulser emulsification 5～10 minutes after stirring again, promptly obtain the liquid accelerating chemicals of needed alkali-free.
Embodiment 2: the working method of present embodiment is with embodiment 1, and something in common does not repeat, and difference is: the liquid accelerating chemicals of a kind of alkali-free is a unit with the weight part, contains 65 parts in Tai-Ace S 150,8 parts of polyacrylamides, 5 parts of suspension agent sepiolites, 35 parts in water.
Embodiment 3: the working method of present embodiment is with embodiment 1, and something in common does not repeat, and difference is: the liquid accelerating chemicals of a kind of alkali-free is a unit with the weight part, contains 50 parts in Tai-Ace S 150,5 parts of solid-state alkylamines, 2 parts of suspension agent phosphoric acid, 30 parts in water.
Embodiment 4: the working method of present embodiment is with embodiment 1, and something in common does not repeat, and difference is: the liquid accelerating chemicals of a kind of alkali-free is a unit with the weight part, contains 40 parts in Tai-Ace S 150,7 parts in urea, 1 part of suspension agent silicon sol, 25 parts in water.
Embodiment 5: the working method of present embodiment is with embodiment 1, and something in common does not repeat, and difference is: the liquid accelerating chemicals of a kind of alkali-free is a unit with the weight part, contains 35 parts in Tai-Ace S 150,3 parts of trolamines, 2 parts of suspension agent aluminum hydroxide gels, 35 parts in water.
Embodiment 6: the working method of present embodiment is with embodiment 1, and something in common does not repeat, and difference is: the liquid accelerating chemicals of a kind of alkali-free is a unit with the weight part, contains 45 parts in Tai-Ace S 150,4 parts of diethanolamine, 3 parts of suspension agent silicon sol, 30 parts in water.
Embodiment 7: the working method of present embodiment is with embodiment 1, and something in common does not repeat, and difference is: the liquid accelerating chemicals of a kind of alkali-free is a unit with the weight part, contains 45 parts in Tai-Ace S 150,7 parts of Monoethanolamine MEA BASFs, 4 parts of suspension agent sepiolites, 25 parts in water.
Embodiment 8: the working method of present embodiment is with embodiment 1, and something in common does not repeat, and difference is: the liquid accelerating chemicals of a kind of alkali-free is a unit with the weight part, contains 45 parts in Tai-Ace S 150,6 parts of trialkanolamines, 5 parts of suspension agent phosphoric acid, 20 parts in water.
Embodiment 9: a kind of no dry alkaline powder accelerating chemicals is a unit with the weight part, contains 65 parts in Tai-Ace S 150,5 parts in urea.
Go up and the working method of described no dry alkaline powder accelerating chemicals is: take by weighing the Tai-Ace S 150 and the organic amine (urea) of described weight part,, cross 80～120 mesh sieves, promptly obtain needed no dry alkaline powder accelerating chemicals through grinding processing.
Embodiment 10: the working method of present embodiment is with embodiment 9, and something in common does not repeat, and difference is: a kind of no dry alkaline powder accelerating chemicals is a unit with the weight part, contains 80 parts in Tai-Ace S 150,20 parts of polyacrylamides.
Embodiment 11: the working method of present embodiment is with embodiment 9, and something in common does not repeat, and difference is: a kind of no dry alkaline powder accelerating chemicals is a unit with the weight part, contains 70 parts in Tai-Ace S 150,10 parts of two alkanolamines.
Embodiment 12: the working method of present embodiment is with embodiment 9, and something in common does not repeat, and difference is: a kind of no dry alkaline powder accelerating chemicals is a unit with the weight part, contains 75 parts in Tai-Ace S 150,15 parts of trialkanolamines.
Embodiment 13: the working method of present embodiment is with embodiment 9, and something in common does not repeat, and difference is: a kind of no dry alkaline powder accelerating chemicals is a unit with the weight part, contains 67 parts in Tai-Ace S 150,8 parts of solid-state alkylamines.
Embodiment 14: the working method of present embodiment is with embodiment 9, and something in common does not repeat, and difference is: a kind of no dry alkaline powder accelerating chemicals is a unit with the weight part, contains 72 parts in Tai-Ace S 150,12 parts in urea.
Embodiment 15: the working method of present embodiment is with embodiment 9, and something in common does not repeat, and difference is: a kind of no dry alkaline powder accelerating chemicals is a unit with the weight part, contains 68 parts in Tai-Ace S 150,15 parts of trolamines.
Embodiment 16: the working method of present embodiment is with embodiment 9, and something in common does not repeat, and difference is: a kind of no dry alkaline powder accelerating chemicals is a unit with the weight part, contains 72 parts in Tai-Ace S 150,14 parts of diethanolamine.
Embodiment 17: the working method of present embodiment is with embodiment 9, and something in common does not repeat, and difference is: a kind of no dry alkaline powder accelerating chemicals is a unit with the weight part, contains 74 parts in Tai-Ace S 150,16 parts of Monoethanolamine MEA BASFs.
Embodiment 18: the working method of present embodiment is with embodiment 9, and something in common does not repeat, and difference is: a kind of no dry alkaline powder accelerating chemicals is a unit with the weight part, contains 18 parts in Tai-Ace S 150,15 parts of polyacrylamides.
Claims (9)
1. alkali-free quick-coagulant, it is characterized in that: main component is Tai-Ace S 150 and organic amine, Tai-Ace S 150: the weight ratio of organic amine is 30～65: 2～8.
2. alkali-free quick-coagulant according to claim 1 is characterized in that: described organic amine is a polyacrylamide, two alkanolamines, or be trialkanolamine, or be Monoethanolamine MEA BASF, or be diethanolamine, or be trolamine, or be solid-state alkylamine, or be urea.
3. liquid accelerating chemicals of the alkali-free that contains the described accelerating chemicals of claim 1, it is characterized in that: with the weight part is unit, contains 30～65 parts in Tai-Ace S 150,2～8 parts of organic amines, 1～5 part of suspension agent, 20～35 parts in water.
4. the liquid accelerating chemicals of alkali-free according to claim 3, it is characterized in that: described organic amine is polyacrylamide, or is urea, or is alkanolamine, or is thanomin; Described suspension agent is a phosphoric acid, or is sepiolite, or is aluminum hydroxide gel, or is silicon sol.
5. the liquid accelerating chemicals of alkali-free according to claim 4, it is characterized in that: described alkanolamine is two alkanolamines, or is trialkanolamine; Described thanomin is a Monoethanolamine MEA BASF, or is diethanolamine, or is trolamine.
6. the working method of the liquid accelerating chemicals of each described alkali-free of a claim 3～5, its concrete steps are:
A. take by weighing the Tai-Ace S 150 of described weight part,, cross 80～300 mesh sieves through grinding processing;
B. the Tai-Ace S 150 after will grinding adds in the mixed solution of organic amine, suspension agent and water of described weight part, dissolves under 40～100 ℃ of temperature condition; Or the Tai-Ace S 150 after will grinding earlier adds in the water of described weight part, adds the organic amine and the suspension agent of described weight part after the dissolving again;
C. at rotating speed powerful the stirring 10～30 minutes under 800～10000 rev/mins the condition with high speed agitator simultaneously;
D. use mulser emulsification 5～10 minutes after stirring again, promptly obtain the liquid accelerating chemicals of needed alkali-free.
7. no dry alkaline powder accelerating chemicals that contains the described accelerating chemicals of claim 1, it is characterized in that: with the weight part is unit, contains 65～80 parts in Tai-Ace S 150,5～20 parts of organic amines.
8. no dry alkaline powder accelerating chemicals according to claim 7 is characterized in that: described organic amine is a polyacrylamide, two alkanolamines, or be trialkanolamine, or be Monoethanolamine MEA BASF, or be diethanolamine, or be trolamine, or be solid-state alkylamine, or be urea.
9. the working method of claim 7 or 8 described no dry alkaline powder accelerating chemicalss, its concrete steps are: take by weighing the Tai-Ace S 150 and the organic amine of described weight part, through grinding processing, cross 80～300 mesh sieves, promptly obtain needed no dry alkaline powder accelerating chemicals.
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|---|---|---|---|
| CNB2005101072169A CN100448791C (en) | 2005-11-29 | 2005-11-29 | Alkali-free speed coagulating agent |
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|---|---|---|---|
| CNB2005101072169A CN100448791C (en) | 2005-11-29 | 2005-11-29 | Alkali-free speed coagulating agent |
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| CN100448791C CN100448791C (en) | 2009-01-07 |
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| CN100386281C (en) * | 2006-12-08 | 2008-05-07 | 王衡 | Powdery alkali-free quick-coagulant |
| CN100450956C (en) * | 2006-12-07 | 2009-01-14 | 江苏博特新材料有限公司 | Alkali-free liquid setting accelerator for spray concrete |
| 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 |
| CN102964078A (en) * | 2012-12-19 | 2013-03-13 | 哈尔滨工业大学 | Alkali-free liquid accelerator for sprayed concrete |
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| CN113185182A (en) * | 2021-05-17 | 2021-07-30 | 传辰立新(厦门)科技有限公司 | High-strength durable alkali-free accelerator and preparation method thereof |
| CN114804707A (en) * | 2022-05-11 | 2022-07-29 | 湖南腾达岩土工程技术有限公司 | Thixotropic agent for ultrahigh-performance sprayed concrete and preparation method and device thereof |
| CN114907070A (en) * | 2022-05-11 | 2022-08-16 | 湖南人健宝固高新科技发展有限公司 | Non-shrinkage sprayable ultrahigh-performance concrete and construction method thereof |
| CN115677255A (en) * | 2022-11-17 | 2023-02-03 | 科之杰新材料集团 (贵州)有限公司 | Water-soluble powder alkali-free accelerator for sprayed concrete and preparation method thereof |
| CN115677255B (en) * | 2022-11-17 | 2023-09-22 | 科之杰新材料集团(贵州)有限公司 | Water-soluble powder alkali-free accelerator for sprayed concrete and preparation method thereof |
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