CN1834053A - Super-slowly coagulant adaptive to variaty concrete water reducers and prepn. thereof - Google Patents
Super-slowly coagulant adaptive to variaty concrete water reducers and prepn. thereof Download PDFInfo
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- CN1834053A CN1834053A CN 200510024397 CN200510024397A CN1834053A CN 1834053 A CN1834053 A CN 1834053A CN 200510024397 CN200510024397 CN 200510024397 CN 200510024397 A CN200510024397 A CN 200510024397A CN 1834053 A CN1834053 A CN 1834053A
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Abstract
This invention relates to the field of concrete super-retarding reagents that are compatible with all kinds of concrete water reducers. The super-retarding reagent in this invention has a mass-fraction composition as follows: 6~35% ethylene polyamine alkyl phosphonic acid or its salt, 5~15% phosphonobutane tricarboxylic acid and 50~90% water. The super-retarding reagent is compatible with different kinds of water reducers and cement, and can greatly reduce the loss of concrete mixture slump. The super-retarding reagent performs extraordinary retarding activities, and concrete solidification time can be adjusted to 3~150 hours by modulating product composition and dosage according to actual engineering demand.
Description
Technical field
The present invention relates to a kind of concrete ultra-retarding agent field that can adapt with polytype cement water reducing agent.
Background technology
The concrete ultra-retarding agent technology is a new developing direction of current concrete technology, is widely used in mass concrete engineering constructions such as underground, dam.With the normal concrete retardant relatively, it is a kind ofly can regulate concrete time of coagulation arbitrarily in the long-term time and unlikely destruction concrete performance, do not influence the admixture of concrete later strength.At present, the concrete retarder of domestic and international application is divided into two big class, mineral-type and organic classes.Mineral-type mainly comprises borax, zinc oxide, phosphoric acid salt and metaphosphate etc., and organic class mainly comprises sulfonated lignin, hydroxycarboxylic acid (salt), carbohydrate and carbohydrate, polyvalent alcohol and derivative thereof etc.But all there are some shortcomings in these retardant at present, the one, and be common retardant, after volume surpasses certain value, problems such as not coagulating can appear in concrete, strength degradation; The 2nd, retardant is relatively poor with all kinds of water reducer adaptability of widespread use at present, during sometimes with the compound use of water reducer, even can produce blood coagulation enhancing effect; The 3rd, to problems such as domestic many cement types adaptability are not strong.
Along with the continuous development of cement water reducing agent technology, at present, cement water reducing agent market mainly contains dissimilar cement water reducing agents such as modified lignin mahogany sulfonate system, naphthalenesulfonate system, sulfonated melamine system, sulfamate system, polycarboxylic acid series.In engineering was used, concrete retarder often together used with cement water reducing agent, therefore, research and develop novel, can practical engineering application be had great importance with the concrete ultra-retarding agent that the number of different types cement water reducing agent adapts.
Summary of the invention
One of purpose of the present invention is exactly in order to overcome the above-mentioned defective of common retardant, and a kind of super-retarder that has super slow setting, can adapt with multiple different series water reducer is provided.
Another object of the present invention provides the preparation method of above-mentioned super-retarder.
Technological line of the present invention is: at the subject matter of present common super-retarder characteristic and existence, and the problem such as incompatible that exists during with the compound use of dissimilar cement water reducing agents, utilize the huge legendary turtle of phosphoric acid salt excellence in the inorganic retarder to close, delayed coagulation, the efficient delayed coagulation of organic retardant, optimize the organic-inorganic combination, select vinyl-amine alkyl phosphonate or vinyl-amine alkyl phosphonic acid etc. as super slow setting component, the super-retarder that is composited and adapts with the different varieties water reducer.
The weight percent of super-retarder component of the present invention is as follows:
Ethylene polyamine alkyl phosphonic acid or its salt 5-35%
Phosphine butane tricarboxylic acid 5-15%
Water 50-90%
Wherein, the general formula of molecular structure of described ethylene polyamine alkyl phosphonic acid or its salt is suc as formula 1:
M in the formula, n are zero or integer, and A, B are hydrogen ion or sodium ion.
The component optimum weight per-cent of super-retarder of the present invention is:
Ethylene polyamine alkyl phosphonic acid or its salt 10-30%
Phosphine butane tricarboxylic acid 5-15%
Water 60-85%
Described ethylene polyamine alkyl phosphonic acid or its salt optimal ethylene diamines-tetramethyl-phosphonic acids or amino trimethylammonium phosphonic acids.
In actual applications, the super-retarder range of application that makes by this optimization range is big, can be used for temperature and is not less than under-5 ℃ the environment.
The preparation method of super-retarder of the present invention is: by above-mentioned each component of weight percent weighing, be placed on together then to stir at a slow speed in the stirring tank and got final product in 3-10 minute.
Beneficial effect of the present invention: super-retarder of the present invention has been selected suitable slow setting component, can adapt with dissimilar water reducers such as modified lignin mahogany sulfonate water reducer, sodium naphthalene sulfonate water reducer, sulfonated melamine water reducer, sulfamate water reducer or polycarboxylate water-reducers, in application, can not have side effects, not influence concrete early strength development.During with the compound use of water reducer, can reduce the concrete mix slump-loss greatly, and also fine with the cement adaptability of different varieties.Super-retarder of the present invention has extraordinary retarding effect, and can adjust time of coagulation, generally can reach 3 hours-150 hours, according to the practical engineering application needs, can adjust concrete time of coagulation by regulating the application volume of formula for a product or product.Super-retarder volume of the present invention is little, and when the time of coagulation that requires concrete 15-20 hour, volume only needs about 0.6%, far below other products.
Embodiment
Super-retarder of the present invention is prepared from by ethylene polyamine alkyl phosphonic acid or ethylene polyamine alkyl phosphonate, phosphine butane tricarboxylic acid, He Shui.In the specific implementation process, should adjust each components by weight percent and obtain needed retarding performance according to the type and the environment of applications condition of selected water reducer.
Embodiment 1
Press each required component of weighing shown in the table 1, be placed on together then and stirred at a slow speed in the stirring tank 3-10 minute, quiet stopping can be prepared from super-retarder about 20 minutes.
Embodiment 2～5
The preparation method is with embodiment 1, and each composition weight proportioning sees Table one.
Each embodiment composition weight proportioning of table one
| Embodiment | Ethylene diamine-tetramethyl-phosphonic acids | Amino trimethylammonium phosphonic acids | Phosphine butane tricarboxylic acid | Water |
| 1 | 0 | 220 | 60 | 720 |
| 2 | 200 | 0 | 50 | 750 |
| 3 | 350 | 0 | 50 | 600 |
| 4 | 100 | 0 | 50 | 850 |
| 5 | 50 | 0 | 150 | 800 |
Listed ethylene diamine-tetramethyl-phosphonic acids, the weight of amino trimethylammonium phosphonic acids all refer to its solid content, unit in the his-and-hers watches one: g.
Main application example sees Table 2,3,4 respectively.
Concerning the concrete mix of C40 strength grade, be 0.4% of cement consumption at the super-retarder volume, during with the compound use of polycarboxylic acid series water reducing agent, concrete time of coagulation and concrete slump and slump-loss see Table 2.Test-results shows that retardant not only has good retarding effect, and can reduce slump-loss greatly.
The concrete coagulating time and the slump when table 2 and polycarboxylate water-reducer Application of composite
| Embodiment | Water reducer | The slow setting time (h) | The slump (mm) | |||
| Type | Volume (%) | Presetting period | Final setting time | 0 hour | 2 hours | |
| 1 | Polycarboxylate water-reducer | 0.6 | 22 | 29 | 180 | 177 |
| 2 | 32 | 38 | 185 | 185 | ||
| 3 | 35 | 41 | 185 | 189 | ||
| 4 | 42 | 49 | 190 | 195 | ||
| 5 | 16 | 22 | 200 | 220 | ||
Concerning the concrete mix of C40 strength grade, embodiment 2 prepared super-retarder volumes are 0.4% of cement consumption, and during with the dissimilar compound use of cement water reducing agent, see Table 3 concrete time of coagulation.Test-results shows that retardant not only has good retarding effect, and with different varieties water reducer is had higher adaptability, can reduce slump-loss greatly.
Concrete coagulating time and the slump of table 3 during with dissimilar water reducer Application of composite
| Water reducer | The slump (mm) | The slow setting time (h) | |||
| Type | Volume (%) | 0 hour | 2 hours | Presetting period | Final setting time |
| Modified lignin mahogany sulfonate | 0.4 | 140 | 130 | 32 | 38 |
| Sodium naphthalene sulfonate | 0.8 | 165 | 165 | 29 | 34 |
| Trimeric cyanamide | 1.0 | 160 | 165 | 28 | 33 |
| Sulfamate | 0.8 | 190 | 205 | 30 | 36 |
| Polycarboxylate water-reducer | 0.6 | 200 | 210 | 32 | 36 |
During to the prepared super-retarder of the concrete mix of C40 strength grade and embodiment 1, the compound use of polycarboxylic acid series water reducing agent, the super-retarder of different volumes is to the concrete time of coagulation and the slump seeing Table 4.
The super-retarder of the different volumes of table 4 is to the influence of the concrete coagulating time and the slump
| Super-retarder | Super-retarder volume (%) | Common retardant (%) | The slump (mm) | Time of coagulation (hour) | ||
| 0 hour | 2 hours | Presetting period | Final setting time | |||
| Embodiment 1 | 0.05 | 0 | 195 | 190 | 7 | 9 |
| Embodiment 2 | 0.2 | 0 | 200 | 215 | 17 | 20 |
| Embodiment 3 | 0.4 | 0 | 200 | 210 | 32 | 36 |
| Embodiment 4 | 1.0 | 0 | 220 | 245 | 101 | 121 |
| Embodiment 5 | 0.5 | 0 | 200 | 215 | 40 | 48 |
| Comparative Examples | 0 | 0.5 | 195 | 160 | 15 | 20 |
Claims (4)
1, a kind of super-retarder, the weight percent of its component is as follows: ethylene polyamine alkyl phosphonic acid and salt 5-35% thereof, phosphine butane tricarboxylic acid 5-15%, water 50-90%, the general formula of molecular structure of therein ethylene polyamines alkyl phosphonic acid and salt thereof is as follows:
M, n are zero or integer in the formula, and A, B are hydrogen ion or sodium ion.
2, super-retarder as claimed in claim 1 is characterized in that the weight percent of its component is as follows: ethylene polyamine alkyl phosphonic acid and salt 10-30% thereof, phosphine butane tricarboxylic acid 5-15%, water 60-85%.
3, super-retarder as claimed in claim 1 or 2 is characterized in that described ethylene polyamine alkyl phosphonic acid and salt thereof are ethylene diamine-tetramethyl-phosphonic acids or amino trimethylammonium phosphonic acids.
4, the preparation method of the described arbitrary super-retarder of claim 1～3, this method is: by above-mentioned each component of weight percent weighing, be placed on together then to stir at a slow speed in the stirring tank and got final product in 3-10 minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100243979A CN100348529C (en) | 2005-03-15 | 2005-03-15 | Super-slowly coagulant adaptive to variaty concrete water reducers and prepn. thereof |
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| CNB2005100243979A CN100348529C (en) | 2005-03-15 | 2005-03-15 | Super-slowly coagulant adaptive to variaty concrete water reducers and prepn. thereof |
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| CN1834053A true CN1834053A (en) | 2006-09-20 |
| CN100348529C CN100348529C (en) | 2007-11-14 |
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| CNB2005100243979A Expired - Fee Related CN100348529C (en) | 2005-03-15 | 2005-03-15 | Super-slowly coagulant adaptive to variaty concrete water reducers and prepn. thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100577592C (en) * | 2007-11-26 | 2010-01-06 | 江苏博特新材料有限公司 | High-temperature retarders suitable for polycarboxylate concrete dehydragent and method for making same |
| CN103449749A (en) * | 2013-08-23 | 2013-12-18 | 石家庄市长安育才建材有限公司 | High-temperature-resistant super retarder with favorable dispersibility and preparation method thereof |
| CN107162458A (en) * | 2017-05-31 | 2017-09-15 | 徐州铸建建材科技有限公司 | A kind of super-retarder and its application method for extending concrete coagulating time |
| CN110183134A (en) * | 2019-05-17 | 2019-08-30 | 江苏万邦新材料科技有限公司 | A kind of new structure cement retarder and its application |
| CN111470835A (en) * | 2020-06-03 | 2020-07-31 | 杭州市城市建设基础工程有限公司 | Method and process for repairing concrete cracks in road and bridge construction |
| CN112625356A (en) * | 2020-12-21 | 2021-04-09 | 东北师范大学 | Lignin-based melamine phosphorus-containing flame retardant, and preparation method and application thereof |
| EP4089060A1 (en) * | 2021-05-14 | 2022-11-16 | Opigeo S.r.l. | Additive for construction materials and hydraulic binder comprising said additive |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1128244A (en) * | 1995-01-04 | 1996-08-07 | 首钢总公司 | Special-purpose retarder for sulpho-aluminate cement |
| CN1087009C (en) * | 1999-11-17 | 2002-07-03 | 武汉大学 | Efficient water-reducing, slow-settling plasticizing agent of concrete |
| CN1176038C (en) * | 2002-11-26 | 2004-11-17 | 武汉理工大学 | Super retarder used for delaying setting time of cement stable road surface base material |
-
2005
- 2005-03-15 CN CNB2005100243979A patent/CN100348529C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100577592C (en) * | 2007-11-26 | 2010-01-06 | 江苏博特新材料有限公司 | High-temperature retarders suitable for polycarboxylate concrete dehydragent and method for making same |
| CN103449749A (en) * | 2013-08-23 | 2013-12-18 | 石家庄市长安育才建材有限公司 | High-temperature-resistant super retarder with favorable dispersibility and preparation method thereof |
| CN103449749B (en) * | 2013-08-23 | 2015-12-23 | 石家庄市长安育才建材有限公司 | A kind of have High-temperature-ressupert supert retarder of good distribution performance and preparation method thereof |
| CN107162458A (en) * | 2017-05-31 | 2017-09-15 | 徐州铸建建材科技有限公司 | A kind of super-retarder and its application method for extending concrete coagulating time |
| CN110183134A (en) * | 2019-05-17 | 2019-08-30 | 江苏万邦新材料科技有限公司 | A kind of new structure cement retarder and its application |
| CN111470835A (en) * | 2020-06-03 | 2020-07-31 | 杭州市城市建设基础工程有限公司 | Method and process for repairing concrete cracks in road and bridge construction |
| CN112625356A (en) * | 2020-12-21 | 2021-04-09 | 东北师范大学 | Lignin-based melamine phosphorus-containing flame retardant, and preparation method and application thereof |
| CN112625356B (en) * | 2020-12-21 | 2022-08-16 | 东北师范大学 | Lignin-based melamine phosphorus-containing flame retardant, and preparation method and application thereof |
| EP4089060A1 (en) * | 2021-05-14 | 2022-11-16 | Opigeo S.r.l. | Additive for construction materials and hydraulic binder comprising said additive |
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| CN100348529C (en) | 2007-11-14 |
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Assignee: Fujian Kezijie New Material Co., Ltd. Assignor: Tongji University Contract fulfillment period: 2008.10.10 to 2013.10.10 contract change Contract record no.: 2008310000228 Denomination of invention: Super-slowly coagulant adaptive to variaty concrete water reducers and prepn. thereof Granted publication date: 20071114 License type: Exclusive license Record date: 20081124 |
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Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.10.10 TO 2013.10.10; CHANGE OF CONTRACT Name of requester: FUJIAN KEZHIJIE NEW MATERIALS CO., LTD. Effective date: 20081124 |
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Granted publication date: 20071114 Termination date: 20130315 |