CN1089733C - Efficient water-reducing agent for high-strength concrete and its preparing process and use - Google Patents
Efficient water-reducing agent for high-strength concrete and its preparing process and use Download PDFInfo
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- CN1089733C CN1089733C CN98121803A CN98121803A CN1089733C CN 1089733 C CN1089733 C CN 1089733C CN 98121803 A CN98121803 A CN 98121803A CN 98121803 A CN98121803 A CN 98121803A CN 1089733 C CN1089733 C CN 1089733C
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- reducing agent
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- strength concrete
- water
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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
- C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
- C04B2103/302—Water reducers
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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)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The present invention relates to a high-efficiency water reducing agent for high-strength concrete, which is characterized in that a sulfonated matter and a viscosity regulation agent are introduced in the synthesis of phenolic resin, and a manufactured condensation polymer is used as a water reducing agent in concrete, mortar, cement paste and an aqueous slurry composition; cement net paste incorporated in the water reducing agent has the advantages of good flowability, concrete slump constant increase, small slump constant reduction along with time variation and pumped concrete requirement attainment. The present invention is a relatively ideal water reducing agent in the high-strength concrete at present and has the popularization and application value.
Description
The present invention relates to a kind of efficient water-reducing agent for high-strength concrete, it is applicable to concrete, mortar, the processing and manufacturing of grout and aqueous slurry goods.
Chinese patent CN1032445A, on April 19th, 1989 disclosed " concrete admixture that aminophenyl sulfonic acid-P-F contracts and contains thing and contain this condenses ", this patent is admixed to this condenses in the cement grouting composition, need not to increase the slump that the water yield just can increase cement grouting composition, reduce slump-loss, and available pump is transported to the appointed place with cement grouting composition.But the weak point of this patent is to have three needs to add aqueous sodium hydroxide solution in the entire reaction course of making aminophenyl sulfonic acid-P-F condenses, wherein twice is 20% aqueous sodium hydroxide solution, it once is the 0.1N aqueous sodium hydroxide solution, this has increased the complicacy of technology undoubtedly, the tired lock of operation; Next is that condensation reaction is carried out in two steps, after the first step reaction is finished, must reduce to room temperature, after the adjusting pH value, is warming up to the reflux temperature reaction again, has prolonged reaction time, causes energy dissipation; From repeatedly observing the embodiment, the technological process that has is similar, but the viscosity of reaction product differs greatly, and this is undoubtedly due to the molecular weight size, but what measure is this patent have molecular weight is not regulated and is controlled, thereby reach the scope of desired molecule amount; This patent was once mentioned and is mixed this condenses and can improve concrete ultimate compression strength, just inferred qualitatively, but can bring up to what degree, and not seeing has the experimental data explanation.
The objective of the invention is provides a kind of efficient water-reducing agent for high-strength concrete and manufacture method and purposes at the deficiencies in the prior art, be characterized in sulfonated phenol formaldehyde resin is synthetic, introducing viscosity modifier, the polycondensate that makes is made water reducer in concrete, mortar, grout and aqueous slurry composition, mix the cement paste good fluidity of this water reducer, concrete slump increases, the slump reduces seldom over time, reaches the requirement of pump concrete.It is an ideal water reducer comparatively in the present strong concrete.
Purpose of the present invention is realized by following technical measures
The recipe ingredient of efficient water-reducing agent for high-strength concrete (by weight) is:
Phenolic material (available phenol, dihydroxy-benzene, cresols and/or naphthols are at least a) 10-70 part
Aldehydes (available formaldehyde, acetaldehyde, oxalic dialdehyde, propionic aldehyde, mda, butyraldehyde, isobutyric aldehyde, glutaraldehyde and/or chaff
Aldehyde is at least a) 15-95 part
Sulfonated bodies (available sulphite, persulphate, thionamic acid, sulfamate, aminophenyl sulfonic acid and/or ammonia
Base phenylbenzimidazole sulfonic acid salt is at least a) 10-80 part
Viscosity modifier (available quadrol, diethylenetriamine, triethylene tetramine, Tetramethylammonium hydroxide, six methynes
Tetramine, ethanamide and/or acrylamide are at least a) 1～40 part
The manufacture method of efficient water-reducing agent for high-strength concrete, be with 10～70 parts of phenolic materials, 15～95 parts of aldehydes and 1～40 part of adding of viscosity modifier have reflux exchanger, in the reactor of agitator and thermometer, under agitation adding sodium hydroxide adjusting pH value is 7～11, heat temperature raising to reflux temperature reacted 2～3 hours down then, add 10～80 parts of sulfonated bodiess again, continue under the reflux temperature and reacted 1-3 hour, obtaining molten crossing is about 30% water reducer, records viscosity in 25～35 seconds (4# cup).
Efficient water-reducing agent for high-strength concrete is used for concrete, mortar, grout and contain cement products and the processing and manufacturing of material.Consumption is 0.3～1.5% of a cement consumption, reaches the requirement of pump concrete.Its clean slurry degree of mobilization and concrete performance see table 1 and table 2 data for details.
Table 1 is clean slurry degree of mobilization test data.
Table 2 is the testing concrete performance data.
Test-results shows, mixes the cement paste good fluidity of high efficiency water reducing agent, although water cement ratio (W/C) is 0.29, good flowability is still arranged, concrete slump increases, and the slump descends very for a short time over time, and this is that admixture was can't be obtained in the past.Simultaneous test shows that the grout that does not add this water reducer can't flow at all.
The present invention compared with prior art has following advantage:
1. adopt solid sodium hydroxide, be reduced to from three times and once regulate the pH value, simplified technology, alleviated labour intensity.
2. in entire reaction course, do not have temperature-fall period, save energy, shortened the production cycle.
3. adopt amine substance as viscosity modifier, molecular weight that can the better controlled product reaches the range of viscosities of processing requirement.
4. the manufacture method of water reducer of the present invention is simple, and is easy to operate, and good reproducibility is easy to grasp, widely applicable, remarkable economic efficiency and social benefit arranged.
Embodiment
Below by embodiment the present invention is carried out concrete description; be necessary to be pointed out that at this following examples only are used for the present invention is further detailed; can not be interpreted as limiting the scope of the invention, the person skilled in art can make some nonessential improvement and adjustment to the present invention according to foregoing.
1. with phenol 10 grams, 36.8% formalin 18 grams and acrylamide 1.5 grams join in the reactor that has reflux exchanger, agitator and thermometer, under agitation adding sodium hydroxide adjusting pH value is 7, heat temperature raising to reflux temperature reacted 2～3 hours down then, added amino phenyl sulfonyl hydrochlorate 17.9 grams, water 100 grams, continue under the reflux temperature and reacted 3 hours, be cooled to room temperature, obtain concentration and be about 30% the water reducer aqueous solution, recording viscosity is 28 seconds (4# cup).
2. with cresols 11 grams, 40% glyoxal water solution 15 grams and hexamethylenetetramine 1.5 grams join and have agitator, in the reactor of reflux exchanger and thermometer, under agitation adding sodium hydroxide adjusting pH value is 7, and heat temperature raising to reflux temperature reacted 2～3 hours down then, adds sodium sulphite anhydrous 99.3 12.6 grams, water 59.4 grams, continue under the reflux temperature reaction 3 hours, be cooled to room temperature, obtain concentration and be about 30% the water reducer aqueous solution to record viscosity be 30 seconds (4# cup).
3. with dihydroxy-benzene 11.0 grams, 36.8% formalin, 16.3 grams and quadrol 1.6 grams join and have agitator, in the reactor of reflux exchanger and thermometer, under agitation adding sodium hydroxide adjusting pH value is 7.6, and heat temperature raising to reflux temperature reacted 2～3 hours down then, add thionamic acid sodium 10.4 grams, water 54 grams continue under the reflux temperature and reacted 3 hours, are cooled to room temperature, obtain the water reducer aqueous solution of concentration about 30%, recording viscosity is 25 seconds (4# second).
The clean slurry of table 1 fluidity test data*
* testing cement is Qu Jiang cement plant 4～5# cement, the ratio of mud 0.29,12 ℃ of test room temperature I Zu, 22 ℃ of II Zu. Fluidity is by State Standard of the People's Republic of China GB/T8077-87 flowing degree of net paste of cement determination of test method. Table 2 testing concrete performance data*
* testing concrete performance is pressed GB8076-1997 prescriptive procedure mensuration.
| The sample sequence number | Incorporation (cement Chong %) | The slump (millimeter) | |||||
| Initially | 30 minutes | 60 minutes | 90 minutes | 120 minutes | |||
| 0 1 2 3 4 | 0 0.5 0.5 0.5 0.5 | Do not flow 245 245 236 235 | 250 250 240 240 | 255 255 245 245 | 265 262 250 252 | I Zu | |
| 5 6 7 8 9 10 | 0.5 0.5 0.5 0.5 0.5 0.5 | 230 220 227 223 221 220 | 238 232 242 241 227 230 | 240 232 245 256 250 240 | II Zu | ||
| Numbering | Volume (%) | Water-cement ratio | The slump (cm) | Compression strength MPa | |||
| Initially | 90 (minute) | 3 days | 7 days | 28 days | |||
| 1 | 0.6 | 0.32 | 22.8 | 21.4 | 43.5 | 71.3 | 85.5 |
| 2 | 0.6 | 0.31 | 22.0 | 18.8 | 44.7 | 71.4 | 85.2 |
| 3 | 0.8 | 0.30 | 24.0 | 24.0 | 46.3 | 73.1 | 84.1 |
| 4 | 0.6 | 0.31 | 22.4 | 23.5 | 48.5 | 73.8 | 86.6 |
| 5 | 0.6 | 0.30 | 21.5 | 20.4 | 45.7 | 67.6 | 84.8 |
Claims (3)
1. efficient water-reducing agent for high-strength concrete is characterized in that the recipe ingredient (by weight) of this water reducer is:
10～70 parts of phenolic materials
15～95 parts of aldehydes
10～80 parts of sulfonated bodiess
1～40 part of viscosity modifier
Wherein phenolic material is that phenol, dihydroxy-benzene, cresols and/or naphthols are at least a; Aldehydes be formaldehyde, acetaldehyde, oxalic dialdehyde, propionic aldehyde, mda, butyraldehyde, isobutyric aldehyde, glutaraldehyde and/or furfural be at least a; Sulfonated bodies is a sulphite, persulphate, and thionamic acid, sulfamate, aniline sulfonic acid and/or amino phenyl sulfonyl hydrochlorate are at least a; Viscosity modifier is quadrol, diethylenetriamine, triethylene tetramine, Tetramethylammonium hydroxide, and hexamethylenetetramine, ethanamide and/or acrylamide are at least a.
2. according to the manufacture method of claims 1 described efficient water-reducing agent for high-strength concrete, it is characterized in that:
With phenolic material phenol, dihydroxy-benzene, 10～70 parts of cresols or naphthols, aldehydes formaldehyde, acetaldehyde, oxalic dialdehyde, propionic aldehyde, mda, butyraldehyde, isobutyric aldehyde, 15～95 parts in glutaraldehyde or furfural and viscosity modifier quadrol, diethylenetriamine, triethylene tetramine, Tetramethylammonium hydroxide, hexamethylenetetramine, ethanamide or acrylamide join for 1～40 part and have reflux exchanger, in the reactor of agitator and thermometer, under agitation adding sodium hydroxide adjusting pH value is 7～11, heat temperature raising to reflux temperature reacted 1～4 hour down then, add sulfonated bodies sulphite again, persulphate, thionamic acid, sulfamate, 10～80 parts of aniline sulfonic acid or amino phenyl sulfonyl hydrochlorates, continued back flow reaction 1～3 hour, obtain the water reducer of concentration about 30%, record viscosity in 25～35 seconds (4# cup).
3. according to the purposes of the described efficient water-reducing agent for high-strength concrete of claim 1, it is characterized in that this water reducer is used for concrete, mortar, grout and contain the material of cement products, consumption is 0.3～1.5% of a cement consumption, reaches the requirement of pump concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98121803A CN1089733C (en) | 1998-10-21 | 1998-10-21 | Efficient water-reducing agent for high-strength concrete and its preparing process and use |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98121803A CN1089733C (en) | 1998-10-21 | 1998-10-21 | Efficient water-reducing agent for high-strength concrete and its preparing process and use |
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| Publication Number | Publication Date |
|---|---|
| CN1251828A CN1251828A (en) | 2000-05-03 |
| CN1089733C true CN1089733C (en) | 2002-08-28 |
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| CN98121803A Expired - Fee Related CN1089733C (en) | 1998-10-21 | 1998-10-21 | Efficient water-reducing agent for high-strength concrete and its preparing process and use |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2571967C1 (en) * | 2014-09-12 | 2015-12-27 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Казанский государственный архитектурно-строительный университет" КГАСУ | Method of obtaining plasticiser for concrete mixtures |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102173636B (en) * | 2011-01-27 | 2012-10-31 | 何伟卿 | Device and method for preparing concrete water-reducing agent using phenolic resin wastewater |
| WO2016081112A2 (en) * | 2014-10-31 | 2016-05-26 | Rohm And Haas Company | Synthetic water retention agent and rheology modifier for use in cement, admixtures |
| CN105111393A (en) * | 2015-08-31 | 2015-12-02 | 沈阳化工大学 | Preparation method of foamable phenolic resin |
| CN106517867A (en) * | 2016-11-30 | 2017-03-22 | 张松波 | Chloride-free cement grinding aid |
| CN107746201A (en) * | 2017-09-21 | 2018-03-02 | 镇江市太浪新材料科技有限公司 | A kind of efficient preparation technology of the special water reducer of concrete |
| CN107793064A (en) * | 2017-09-21 | 2018-03-13 | 镇江市太浪新材料科技有限公司 | A kind of special water reducer of concrete |
| CN107556446B (en) * | 2017-10-18 | 2020-12-29 | 江苏苏博特新材料股份有限公司 | Amination intermediate, amination polyether and phosphorylation star-shaped product thereof, and preparation method and application thereof |
| CN107602870B (en) * | 2017-10-19 | 2020-10-23 | 江苏苏博特新材料股份有限公司 | Aminated polyether, preparation method of polycondensate containing phosphorous acid groups and application of polycondensate as cement dispersant |
| CN107954626B (en) * | 2017-12-05 | 2020-08-21 | 山东理工大学 | Preparation method of biomass-based water reducing agent |
| CN109928657A (en) * | 2019-05-05 | 2019-06-25 | 杭州临安引力外加剂有限公司 | A kind of high performance sulfamate water reducer and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1120030A (en) * | 1994-05-13 | 1996-04-10 | 武汉化工学院 | Synthesizing efficient cement water reducing agent by using waste phenol dregs oil refinery |
| CN1176946A (en) * | 1996-09-17 | 1998-03-25 | 北京城建集团总公司构件厂 | Self-compactable concrete blend needing vibrating |
-
1998
- 1998-10-21 CN CN98121803A patent/CN1089733C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1120030A (en) * | 1994-05-13 | 1996-04-10 | 武汉化工学院 | Synthesizing efficient cement water reducing agent by using waste phenol dregs oil refinery |
| CN1176946A (en) * | 1996-09-17 | 1998-03-25 | 北京城建集团总公司构件厂 | Self-compactable concrete blend needing vibrating |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2571967C1 (en) * | 2014-09-12 | 2015-12-27 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Казанский государственный архитектурно-строительный университет" КГАСУ | Method of obtaining plasticiser for concrete mixtures |
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| Publication number | Publication date |
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| CN1251828A (en) | 2000-05-03 |
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