CN109400821A - A kind of agent on crack resistance of concrete bleeding inhibitor and preparation method thereof with diminishing function - Google Patents
A kind of agent on crack resistance of concrete bleeding inhibitor and preparation method thereof with diminishing function Download PDFInfo
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- CN109400821A CN109400821A CN201811301988.XA CN201811301988A CN109400821A CN 109400821 A CN109400821 A CN 109400821A CN 201811301988 A CN201811301988 A CN 201811301988A CN 109400821 A CN109400821 A CN 109400821A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
- C08F283/06—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals
- C08F283/065—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals on to unsaturated polyethers, polyoxymethylenes or polyacetals
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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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/16—Sulfur-containing compounds
- C04B24/161—Macromolecular compounds comprising sulfonate or sulfate groups
- C04B24/163—Macromolecular compounds comprising sulfonate or sulfate groups obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B24/165—Macromolecular compounds comprising sulfonate or sulfate groups obtained by reactions only involving carbon-to-carbon unsaturated bonds containing polyether side chains
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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
- 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
Abstract
The invention discloses a kind of agent on crack resistance of concrete bleeding inhibitor and preparation method thereof with diminishing function, the anti-bleeding inhibitor is mainly by polyether macromonomer, unsaturated carboxylic acid, unsaturated amides, unsaturated sulfonic acid or its salt, crosslinking agent, oxidant, reducing agent, chain-transferring agent and deionized water are at 15~30 DEG C, it is polymerize by aqueous free radical, after repeated hydrogenation sodium hydroxide solution adjusts pH value, moisturizing is prepared.The preparation method produces at normal temperature, without heat source, equipment is simple, pollution-free, high production efficiency, which can effectively solve the existing water conservation of existing polycarboxylate water-reducer and water absorbing properties are poor, workability is poor, it is easy to appear bleeding, grabs the problem of bottom, which has excellent thickening, water retention property, can substantially reduce difficulty of construction.
Description
Technical field
The present invention relates to technical field of concrete additives, and in particular to a kind of agent on crack resistance of concrete bleeding with diminishing function
Inhibitor and preparation method thereof.
Background technique
High performance water reducing agent of polyocarboxy acid has a systems such as water-reducing rate is high, volume is low, adaptable, loss is small, environmentally protective
Column excellent properties are widely used to the engineering fields such as real estate building, railway, highway, bridge, water conservancy and water power, it goes out
Now currently replace other products and be increasingly becoming the widest concrete admixture of domestic application, adapts to high-performance coagulation
The development of soil.
Although the current excellent water-reducing property of polycarboxylate water-reducer is widely recognized as by industry, due to the change of cement
The reasons such as the farinose materials such as change, coal ash are very different, grading of aggregates is poor, so that polycarboxylate water-reducer also goes out in practical applications
Show that slump-loss is too fast to be deteriorated with workability, bleeding has easily occurred, grab the phenomenon that bottom, working performance of concrete is caused to decline.
Often considering to compound the polycarboxylate water-reducer of different cultivars with the various chemical admixtures for adjusting viscosity in engineer application makes
With, such as xanthan gum, welan gum, cellulose ether, polyacrylamide, polyvinyl alcohol, they can increase the viscosity of mixture,
There is preferable tackifying effect when very little volume, it is more obvious to the improvement of concrete viscosity, it can significantly reduce mixed
Solidifying soil grabs the generation at bottom, excreting water phenomenon.But from the point of view of Practical Project, there are phases with polycarboxylate water-reducer for most of viscosity modifiers
Capacitive problem.On the one hand, it is easy to appear flocculation, lamination in viscosity modifier and polycarboxylic acids water reducing agent compositional storage process,
Storage stability is caused to be deteriorated；On the other hand, the incorporation of viscosity modifier will affect the dispersibility of polycarboxylate water-reducer, when serious
Concrete flowability can even be reduced.
In view of the above problems, having there is many researchers to pass through Molecular Design, preparation thickening, the poly- carboxylic of water-retaining type at present
Often there is the problems such as complex process, high production cost to solve concrete water bleeding, grab the problems such as bottom in sour water-reducing agent.
Summary of the invention
For above-mentioned deficiency in the prior art, the agent on crack resistance of concrete bleeding suppression with diminishing function that the present invention provides a kind of
Preparation and preparation method thereof can prepare the agent on crack resistance of concrete with diminishing function by this method under 15~30 DEG C of room temperature and secrete
Water inhibitor, which can effectively solve the existing water conservation of existing polycarboxylate water-reducer and water absorbing properties are poor, and
Easy property is poor, is easy to appear bleeding, grabs the problem of bottom.
To achieve the above object, the technical solution adopted by the present invention to solve the technical problems is:
A kind of agent on crack resistance of concrete bleeding inhibitor with diminishing function, the raw material including following mass fraction: unsaturation is poly-
300~360 parts of ether polymeric monomer, 50~100 parts of unsaturated carboxylic acid, 20~30 parts of unsaturated amides, unsaturated sulfonic acid or its salt 3~
8 parts, 0.5~3.0 part of crosslinking agent, 4~6 parts of oxidant, 0.5~1.5 part of reducing agent, 1.0~1.5 parts of chain-transferring agent, deionization
450~500 parts of water；Unsaturated polyether polymeric monomer, unsaturated carboxylic acid, unsaturated amides, unsaturated sulfonic acid or its salt and crosslinking agent,
The ratio between their amount of substance are as follows: 1.0:7.0~8.0:2.0~3.0:0.2~0.5:0.02~0.05.
Further, the raw material including following mass fraction: 330 parts of unsaturated polyether polymeric monomer, unsaturated carboxylic acid 76.5
Part, 30 parts of unsaturated amides, 6.8 parts of unsaturated sulfonic acid or its salt, 0.8 part of crosslinking agent, 4.9 parts of oxidant, 0.73 part of reducing agent,
1.32 parts of chain-transferring agent, 485 parts of deionized water；Unsaturated polyether polymeric monomer, unsaturated carboxylic acid, unsaturated amides, unsaturated sulphur
Acid or its salt and crosslinking agent, the ratio between their amount of substance are as follows: 1.0:7.45:2.2:0.24:0.038.
Further, unsaturated polyether polymeric monomer is allyl alcohol polyethenoxy ether, isoamyl alcohol polyoxyethylene ether and isobutyl
One or both of enol polyoxyethylene ether, molecular weight are 2400~3000.
Further, unsaturated carboxylic acid is one of acrylic acid, methacrylic acid, maleic anhydride and fumaric acid or two
Kind.
Further, unsaturated amides are acrylamide, Methacrylamide, N,N-DMAA, N- hydroxyl first
One or both of base acrylamide and n-isopropyl acrylamide.
Further, unsaturated sulfonic acid or its salt are 2- acrylamide-2-methyl propane sulfonic, methylpropene sodium sulfonate, alkene
One or both of propyl sulfonic acid sodium and sodium p styrene sulfonate.
Further, crosslinking agent N, N- methylene-bisacrylamide, polyethylene glycol 400 diacrylate and polyethylene glycol
One or both of 400 pairs of maleates；Chain-transferring agent is thioacetic acid, mercaptopropionic acid, mercaptoethanol, mercaptopropionic acid first
One or both of ester, mercaptopropionic acid ethyl ester and isooctyl mercaptopropionate.
Further, oxidant is in hydrogen peroxide, ammonium persulfate, potassium peroxydisulfate, sodium peroxydisulfate and tert-butyl hydroperoxide
One or two.
Further, reducing agent is vitamin C, rongalite, carving white zine, green vitriol, sodium dithionite, sulphur
At least two in sodium thiosulfate, sodium hypophosphite, sodium hydrogensulfite and sodium pyrosulfite.
The preparation method of the above-mentioned agent on crack resistance of concrete bleeding inhibitor with diminishing function, includes the following steps:
(1) successively by unsaturated polyether polymeric monomer, unsaturated amides, unsaturated sulfonic acid or its salt, oxidant and deionization
Water is added in reaction kettle, stirring and dissolving, is configured to the mixing primer solution that mass fraction is 50~60%；
(2) reducing agent, chain-transferring agent and deionized water are mixed, is configured to the solution A that mass fraction is 1.0~2.0%；
Unsaturated carboxylic acid, crosslinking agent and deionized water are mixed, the solution B that mass fraction is 50~70% is configured to；
(3) solution A is first added drop-wise to step (1) mixing primer solution obtained at 15~30 DEG C by reactor temperature
In, the time for adding for controlling solution A is 2.5~3.0h, and solution A starts to be added dropwise again solution B to step (1) after 5~10min is added dropwise
In mixing primer solution obtained, the time for adding for controlling solution B is 2.0~2.5h, guarantees that solution A is later than solution B and drips,
After two kinds of solution are added dropwise, continue 1.0~1.5h of stirring, is finally adjusted with the sodium hydroxide solution that mass fraction is 30% molten
For liquid pH value to 5.0~7.0, moisturizing is uniformly mixing to obtain the anti-bleeding inhibitor that solid content is 40wt%.
Take above scheme the beneficial effects are as follows:
(1) anti-bleeding inhibitor of the present invention be utilized the carbon-carbon double bond of high activity in function monomer easily autohemagglutination,
Copolymerization is to effectively improve polymer molecule quality to improve the thickening property of thickener；And have in molecular configurational it is a large amount of-
SO3H ,-COOH and-CONH2Such high-hydroscopicity group and certain reticular structure, can play water conservation, thickening and bonding etc.
Effect can improve and interact between concrete particle, to increase the intensity and toughness of concrete, so that concrete workability
It is good, not bleeding, not grab bottom, intensity high, have stronger thickening, water retention property.
(2) crosslinking agent in the present invention is partial cross-linked by first carrying out unsaturated carboxylic acid, and cross-linked copolymer is in cement alkali
Property environment under can hydrolyze, crosslinking chemical bond fracture, release each molecule being crosslinked, constantly release with dispersion effect
Diminishing agent molecule achieve the effect that sustained release to constantly supplement the water-reducing agent for having adsorbed and having been covered by hyrate, have
It is excellent long-acting slump-retaining.After this anti-bleeding inhibitor can not only keep ready-mixed concrete to transport for a long time
The slump, can also to avoid under high temperature for a long time transport caused by mixing water evaporation.
(3) agent on crack resistance of concrete bleeding inhibitor of the invention, polymer molecule form the tridimensional network of high-hydroscopicity, make
Used time concrete mix workability is good, and good fluidity, anti-bleeding is strong, by the coordination facilitation between each component, makes
It is finer and close in paste structure, while making to generate more, the stronger chemical bond of binding force between hydrated cementitious particle, to replace model moral
Hua Li improves the bond of cementitious material itself, improves cement and concrete strength, promotes concrete material quality and performance,
Improve the cohesiveness and aid pumpability of concrete mix.
(4) anti-bleeding inhibitor prepared by the present invention, can be used in compounding with common high-performance water reducing agent, the two it is compatible
Property and excellent storage stability, are not in traditional viscosity modifier, as xanthan gum, welan gum, cellulose ether, polyacrylamide,
The flocculations such as polyvinyl alcohol, lamination, and the adaptability of concrete can be obviously improved and significantly reduce the slump of concrete
Loss, while concrete obtained has the advantages that intensity height, durability is good, do not isolate, not bleeding.
(5) preparation method of the invention uses room temperature technique, is not necessarily to heat source, and there is simple production process, reaction to be easy to control
System, it is at low cost the advantages that, while the anti-bleeding inhibitor not only water-reducing rate with higher prepared, but also can effectively improve mixed
Solidifying soil workability, slump retaining, improve the intensity of concrete.
Specific embodiment
Embodiment 1
A kind of agent on crack resistance of concrete bleeding inhibitor with diminishing function, the raw material including following mass fraction: prenol
300 parts of polyoxyethylene ether, 68 parts of acrylic acid, 21 parts of acrylamide, 5.7 parts of 2- acrylamide-2-methyl propane sulfonic, N, N- methylene
0.72 part of base bisacrylamide, 2.4 parts of hydrogen peroxide, 2.1 parts of potassium peroxydisulfate, 0.35 part of vitamin C, 0.25 part of sodium hydrogensulfite,
1.2 parts of mercaptopropionic acid, 465 parts of deionized water；Unsaturated polyether polymeric monomer, unsaturated carboxylic acid, unsaturated amides, unsaturated sulfonic acid
Or its salt and crosslinking agent, the ratio between their amount of substance are as follows: 1.0:7.55:2.33:0.22:0.037.
The preparation method of the above-mentioned agent on crack resistance of concrete bleeding inhibitor with diminishing function, includes the following steps:
(1) successively by 300g molecular weight be 2400 isoamyl alcohol polyoxyethylene ether, 21g acrylamide, 5.7g2- propylene
Amide -2- methyl propane sulfonic acid, 2.4g hydrogen peroxide, 2.1g potassium peroxydisulfate and 290g deionized water are added in reaction kettle, are stirred molten
Solution uniformly obtains mixing primer solution；
(2) 0.35g vitamin C, 0.25g sodium hydrogensulfite 1.2g mercaptopropionic acid and 130g deionized water are mixed, is prepared
At mixed solution A；By 68g acrylic acid, 0.72gN, N- methylene-bisacrylamide and the mixing of 45g deionized water are configured to mix
Solution B；
(3) solution A is first added drop-wise to step (1) mixing primer solution obtained, control at 25 DEG C by reactor temperature
The time for adding of solution A is 2.5h, and it is molten to start to be added dropwise mixing bottom material made from solution B to step (1) again after solution A dropwise addition 5min
In liquid, the time for adding for controlling solution B is 2.0h, guarantees that solution A is later than solution B and drips, after two kinds of solution are added dropwise, after
Continue stirring 1.5h, finally adjusts solution ph to 5.0~7.0 with the sodium hydroxide solution that mass fraction is 30%, moisturizing is stirred
Uniformly obtain the anti-bleeding inhibitor (product number PCE-TJ-1) that solid content is 40wt%.
Embodiment 2
A kind of agent on crack resistance of concrete bleeding inhibitor with diminishing function, the raw material including following mass fraction: prenol
360 parts of polyoxyethylene ether, 95 parts of methacrylic acid, 30 parts of Methacrylamide, 6 parts of methylpropene sodium sulfonate, polyethylene glycol 400
3.2 parts of diacrylate, 2.4 parts of hydrogen peroxide, 2.4 parts of ammonium persulfate, 0.55 part of vitamin C, 0.35 part of sodium thiosulfate, sulfydryl
0.72 part of acetic acid, 0.6 part of mercaptopropionic acid, 480 parts of deionized water；Unsaturated polyether polymeric monomer, unsaturated carboxylic acid, unsaturated acyl
Amine, unsaturated sulfonic acid or its salt and crosslinking agent, the ratio between their amount of substance are as follows: 1.0:7.36:2.35:0.25:0.042.
The preparation method of the above-mentioned agent on crack resistance of concrete bleeding inhibitor with diminishing function, includes the following steps:
(1) successively by 360g molecular weight be 2400 isoamyl alcohol polyoxyethylene ether, 30g Methacrylamide, 6g methyl
Sodium allylsulfonate, 2.4g hydrogen peroxide, 2.4g ammonium persulfate and 285g deionized water are added in reaction kettle, and stirring and dissolving is uniform to be obtained
To mixing primer solution；
(2) 0.55g vitamin C, 0.35g sodium thiosulfate, 0.72g thioacetic acid, 0.6g mercaptopropionic acid and 155g are gone
Ionized water mixing, is configured to mixed solution A；By 95g methacrylic acid, 3.2g polyethylene glycol 400 diacrylate and 40g go from
Sub- water mixing, is configured to mixed solution B；
(3) solution A is first added drop-wise to step (1) mixing primer solution obtained, control at 20 DEG C by reactor temperature
The time for adding of solution A is 2.5h, and it is molten to start to be added dropwise mixing bottom material made from solution B to step (1) again after solution A dropwise addition 8min
In liquid, the time for adding for controlling solution B is 2.0h, guarantees that solution A is later than solution B and drips, after two kinds of solution are added dropwise, after
Continue stirring 1.5h, finally adjusts solution ph to 5.0~7.0 with the sodium hydroxide solution that mass fraction is 30%, moisturizing is stirred
Uniformly obtain the anti-bleeding inhibitor (product number PCE-TJ-2) that solid content is 40wt%.
Embodiment 3
A kind of agent on crack resistance of concrete bleeding inhibitor with diminishing function, the raw material including following mass fraction: prenol
330 parts of polyoxyethylene ether, 55 parts of acrylic acid, 20 parts of methacrylic acid, 20 parts of acrylamide, 5 parts of N,N-DMAA,
6.5 parts of sodium p styrene sulfonate, double 3.6 parts of the maleates of polyethylene glycol 400,2.1 parts of hydrogen peroxide, 3 parts of sodium peroxydisulfate, rongalite
1.2 parts, 1.45 parts of mercaptopropionic acid, 470 parts of deionized water；Unsaturated polyether polymeric monomer, unsaturated carboxylic acid, unsaturated amides, no
It is saturated sulfonic acid or its salt and crosslinking agent, the ratio between their amount of substance are as follows: 1.0:7.24:2.41:0.23:0.044.
The preparation method of the above-mentioned agent on crack resistance of concrete bleeding inhibitor with diminishing function, includes the following steps:
(1) successively by 330g molecular weight be 2400 isoamyl alcohol polyoxyethylene ether, 20g acrylamide, 5gN, N- diformazan
Base acrylamide, 6.5g sodium p styrene sulfonate, 2.1g hydrogen peroxide, 3g sodium peroxydisulfate and 290g deionized water are added to reaction kettle
In, stirring and dissolving is uniform, obtains mixing primer solution；
(2) 1.2g rongalite, 1.45g mercaptopropionic acid and 140g deionized water are mixed, is configured to mixed solution A；By 55g
The double maleates of acrylic acid, 20g methacrylic acid, 3.6g polyethylene glycol 400 and the mixing of 40g deionized water, are configured to mix molten
Liquid B；
(3) solution A is first added drop-wise to step (1) mixing primer solution obtained, control at 20 DEG C by reactor temperature
The time for adding of solution A is 3h, and solution A starts to be added dropwise again solution B to step (1) mixing primer solution obtained after 6min is added dropwise
In, the time for adding for controlling solution B is 2.5h, guarantees that solution A is later than solution B and drips, and after two kinds of solution are added dropwise, is continued
1h is stirred, the sodium hydroxide solution for being finally 30% with mass fraction adjusts solution ph to 5.0~7.0, and moisturizing stirs evenly
Obtain the anti-bleeding inhibitor (product number PCE-TJ-3) that solid content is 40wt%.
Embodiment 4
A kind of agent on crack resistance of concrete bleeding inhibitor with diminishing function, the raw material including following mass fraction: isobutene alcohol
300 parts of polyoxyethylene ether, 42 parts of acrylic acid, 34 parts of maleic anhydride, 27.5 parts of N,N-DMAA, 2- acrylamide-
6.2 parts of 2- methyl propane sulfonic acid, 2.4 parts of polyethylene glycol 400 diacrylate, 3.2 parts of hydrogen peroxide, 1.8 parts of ammonium persulfate, rongalite
0.7 part, 0.3 part of sodium pyrosulfite, 1.26 parts of isooctyl mercaptopropionate, 490 parts of deionized water；Unsaturated polyether polymeric monomer, no
Saturated carboxylic acid, unsaturated amides, unsaturated sulfonic acid or its salt and crosslinking agent, the ratio between their amount of substance are as follows: 1.0:7.44:
2.22:0.24:0.038。
The preparation method of the above-mentioned agent on crack resistance of concrete bleeding inhibitor with diminishing function, includes the following steps:
(1) successively by 300g molecular weight be 2400 isobutene alcohol polyoxyethylene ether, 27.5gN, N- dimethyl allene acyl
Amine, 6.2g2- acrylamide-2-methyl propane sulfonic, 3.2g hydrogen peroxide, 1.8g ammonium persulfate and 285g deionized water are added to instead
It answers in kettle, stirring and dissolving is uniform, obtains mixing primer solution；
(2) 0.7g rongalite, 0.3g sodium pyrosulfite, 1.26g isooctyl mercaptopropionate and 155g deionized water are mixed,
It is configured to mixed solution A；By 42g acrylic acid, 34g maleic anhydride, 2.4g polyethylene glycol 400 diacrylate and 50g deionization
Water mixing, is configured to mixed solution B；
(3) solution A is first added drop-wise to step (1) mixing primer solution obtained, control at 15 DEG C by reactor temperature
The time for adding of solution A is 3h, and solution A starts to be added dropwise again solution B to step (1) mixing primer solution obtained after 6min is added dropwise
In, the time for adding for controlling solution B is 2.5h, guarantees that solution A is later than solution B and drips, and after two kinds of solution are added dropwise, is continued
1h is stirred, the sodium hydroxide solution for being finally 30% with mass fraction adjusts solution ph to 5.0~7.0, and moisturizing stirs evenly
Obtain the anti-bleeding inhibitor (product number PCE-TJ-4) that solid content is 40wt%.
Embodiment 5
A kind of agent on crack resistance of concrete bleeding inhibitor with diminishing function, the raw material including following mass fraction: prenol
200 parts of polyoxyethylene ether, 120 parts of isobutene alcohol polyoxyethylene ether, 59.6 parts of acrylic acid, 16.5 parts of fumaric acid, methacryl
25 parts of amine, 3 parts of N hydroxymethyl acrylamide, 5.2 parts of allyl propane sulfonic acid, double 3.5 parts of the maleates of polyethylene glycol 400, tertiary fourth
3.6 parts of base hydrogen peroxide, 1.2 parts of ammonium persulfate, 0.32 part of vitamin C, 0.3 part of sodium dithionite, green vitriol
0.01 part, 1.5 parts of mercaptoethanol, 495 parts of deionized water；Unsaturated polyether polymeric monomer, unsaturated carboxylic acid, unsaturated amides, no
It is saturated sulfonic acid or its salt and crosslinking agent, the ratio between their amount of substance are as follows: 1.0:7.27:2.43:0.27:0.044.
The preparation method of the above-mentioned agent on crack resistance of concrete bleeding inhibitor with diminishing function, includes the following steps:
(1) successively by 200g molecular weight be 2400 isoamyl alcohol polyoxyethylene ether, 120g molecular weight be 2400 isobutyl
Enol polyoxyethylene ether, 25g Methacrylamide, 3gN- hydroxymethyl acrylamide, 5.2g allyl propane sulfonic acid, 3.6g tert-butyl
Hydrogen peroxide, 1.2g ammonium persulfate and 290g deionized water are added in reaction kettle, and stirring and dissolving is uniform, and it is molten to obtain mixing bottom material
Liquid；
(2) by 0.32g vitamin C, 0.3g sodium dithionite, 0.01g green vitriol, 1.5g mercaptoethanol and
The mixing of 155g deionized water, is configured to mixed solution A；59.6g acrylic acid, 16.5g fumaric acid, 3.5g polyethylene glycol 400 is double
Maleate and the mixing of 50g deionized water, are configured to mixed solution B；
(3) solution A is first added drop-wise to step (1) mixing primer solution obtained, control at 25 DEG C by reactor temperature
The time for adding of solution A is 2.5h, and it is molten to start to be added dropwise mixing bottom material made from solution B to step (1) again after solution A dropwise addition 8min
In liquid, the time for adding for controlling solution B is 2.0h, guarantees that solution A is later than solution B and drips, after two kinds of solution are added dropwise, after
Continue stirring 1.5h, finally adjusts solution ph to 5.0~7.0 with the sodium hydroxide solution that mass fraction is 30%, moisturizing is stirred
Uniformly obtain the anti-bleeding inhibitor (product number PCE-TJ-5) that solid content is 40wt%.
Embodiment 6
A kind of agent on crack resistance of concrete bleeding inhibitor with diminishing function, the raw material including following mass fraction: allyl alcohol is poly-
300 parts of ethylene oxide ether, 25 parts of acrylic acid, 60 parts of maleic anhydride, 18.5 parts of acrylamide, 5.6 parts of n-isopropyl acrylamide, alkene
5 parts of propyl sulfonic acid sodium, polyethylene glycol 400 double 2.6 parts of maleates, 1.8 parts of ammonium persulfate, carve white zine 1.25 by 3.6 parts of hydrogen peroxide
Part, 1.26 parts of mercaptopropionic acid, 475 parts of deionized water；Unsaturated polyether polymeric monomer, unsaturated carboxylic acid, unsaturated amides, unsaturation
Sulfonic acid or its salt and crosslinking agent, the ratio between their amount of substance are as follows: 1.0:7.67:2.48:0.28:0.035.
The preparation method of the above-mentioned agent on crack resistance of concrete bleeding inhibitor with diminishing function, includes the following steps:
(1) successively by 300g molecular weight be 2400 allyl alcohol polyethenoxy ether, 18.5g acrylamide, 5.6gN- isopropyl
Base acrylamide, 5g Sodium Allyl Sulfonate, 3.6g hydrogen peroxide, 1.8g ammonium persulfate and 285g deionized water are added to reaction kettle
In, stirring and dissolving is uniform；Obtain mixing primer solution；
(2) 1.25g is carved white zine, 1.26g mercaptopropionic acid and 135g deionized water to mix, is configured to mixed solution A；It will
The double maleates of 25g acrylic acid, 60g maleic anhydride, 2.6g polyethylene glycol 400 and the mixing of 55g deionized water, are configured to mix molten
Liquid B；
(3) solution A is first added drop-wise to step (1) mixing primer solution obtained, control at 20 DEG C by reactor temperature
The time for adding of solution A is 3h, and solution A starts to be added dropwise again solution B to step (1) mixing primer solution obtained after 5min is added dropwise
In, the time for adding for controlling solution B is 2.5h, guarantees that solution A is later than solution B and drips, and after two kinds of solution are added dropwise, is continued
1h is stirred, the sodium hydroxide solution for being finally 30% with mass fraction adjusts solution ph to 5.0~7.0, and moisturizing stirs evenly
Obtain the anti-bleeding inhibitor (product number PCE-TJ-6) that solid content is 40wt%.
Embodiment 7
A kind of agent on crack resistance of concrete bleeding inhibitor with diminishing function, the raw material including following mass fraction: isobutene alcohol
330 parts of polyoxyethylene ether, 60 parts of acrylic acid, 16.5 parts of methacrylic acid, 30 parts of N,N-DMAA, to styrene sulphur
6.8 parts, N of sour sodium, 0.8 part of N- methylene-bisacrylamide, 4.9 parts of tert-butyl hydroperoxide, 0.72 part of vitamin C, sulfuric acid is sub-
0.01 part of iron, 1.32 parts of mercaptopropionic acid ethyl ester, 485 parts of deionized water；Unsaturated polyether polymeric monomer, unsaturated carboxylic acid, unsaturation
Amide, unsaturated sulfonic acid or its salt and crosslinking agent, the ratio between their amount of substance are as follows: 1.0:7.45:2.2:0.24:0.038.
The preparation method of the above-mentioned agent on crack resistance of concrete bleeding inhibitor with diminishing function, includes the following steps:
(1) successively by 330g molecular weight be 2400 isobutene alcohol polyoxyethylene ether, 30gN, N- dimethylacrylamide,
6.8g sodium p styrene sulfonate, 4.9g tert-butyl hydroperoxide and 285g deionized water are added in reaction kettle, and stirring and dissolving is equal
It is even, obtain mixing primer solution；；
(2) 0.72g vitamin C, 0.01g ferrous sulfate, 1.32g mercaptopropionic acid ethyl ester and 140g deionized water are mixed,
It is configured to mixed solution A；By 60g acrylic acid, 16.5g methacrylic acid, 0.8gN, N- methylene-bisacrylamide and 60g go from
Sub- water mixing, is configured to mixed solution B；
(3) solution A is first added drop-wise to step (1) mixing primer solution obtained, control at 15 DEG C by reactor temperature
The time for adding of solution A is 2.5h, and it is molten to start to be added dropwise mixing bottom material made from solution B to step (1) again after solution A dropwise addition 5min
In liquid, the time for adding for controlling solution B is 2.0h, guarantees that solution A is later than solution B and drips, after two kinds of solution are added dropwise, after
Continue stirring 1.5h, finally adjusts solution ph to 5.0~7.0 with the sodium hydroxide solution that mass fraction is 30%, moisturizing is stirred
Uniformly obtain the anti-bleeding inhibitor (product number PCE-TJ-7) that solid content is 40wt%.
Embodiment 8
A kind of agent on crack resistance of concrete bleeding inhibitor with diminishing function, the raw material including following mass fraction: prenol
200 parts of polyoxyethylene ether, 120 parts of allyl alcohol polyethenoxy ether, 55 parts of acrylic acid, 20 parts of maleic anhydride, 22 parts of acrylamide, 2-
6 parts of acrylamide-2-methyl propane sulfonic, 2.8 parts of polyethylene glycol 400 diacrylate, 2.4 parts of hydrogen peroxide, sodium peroxydisulfate 2.6
Part, 0.5 part of vitamin C, 0.2 part of sodium hypophosphite, 1.58 parts of thioacetic acid, 480 parts of deionized water；The big list of unsaturated polyether
Body, unsaturated carboxylic acid, unsaturated amides, unsaturated sulfonic acid or its salt and crosslinking agent, the ratio between their amount of substance are as follows: 1.0:
7.25:2.32:0.22:0.041。
The preparation method of the above-mentioned agent on crack resistance of concrete bleeding inhibitor with diminishing function, includes the following steps:
(1) successively by 200g molecular weight be 2400 isoamyl alcohol polyoxyethylene ether, 120g molecular weight be 2400 allyl alcohols
Polyoxyethylene ether, 22g acrylamide, 6g2- acrylamide-2-methyl propane sulfonic, 2.4g hydrogen peroxide, 2.6g sodium peroxydisulfate and
280g deionized water is added in reaction kettle, and stirring and dissolving is uniform, obtains mixing primer solution；
(2) 0.5g vitamin C, 0.2g sodium hypophosphite, 1.58g thioacetic acid and 150g deionized water are mixed, is prepared
At mixed solution A；55g acrylic acid, 20g maleic anhydride, 2.8g polyethylene glycol 400 diacrylate and 50g deionized water are mixed
It closes, is configured to mixed solution B；
(3) solution A is first added drop-wise to step (1) mixing primer solution obtained, control at 30 DEG C by reactor temperature
The time for adding of solution A is 2.5h, and it is molten to start to be added dropwise mixing bottom material made from solution B to step (1) again after solution A dropwise addition 9min
In liquid, the time for adding for controlling solution B is 2.0h, guarantees that solution A is later than solution B and drips, after two kinds of solution are added dropwise, after
Continue stirring 1.5h, finally adjusts solution ph to 5.0~7.0 with the sodium hydroxide solution that mass fraction is 30%, moisturizing is stirred
Uniformly obtain the anti-bleeding inhibitor (product number PCE-TJ-8) that solid content is 40wt%.
Test example
The present invention is a kind of agent on crack resistance of concrete bleeding inhibitor with diminishing function, can be by itself and common high-performance water reducing agent
It is compounded in certain mass ratio, the water-reducing agent after compounding is identical as the conventional application method of polycarboxylate water-reducer, i.e., will compounding
Water-reducing agent afterwards is added in concrete, and volume is 1.0%~2.5% (mass percent volume) of cementitious material.Below
Following concrete application performance and Mechanics Performance Testing experiment are carried out to anti-bleeding inhibitor produced by the present invention:
1. the test of concrete application performance is referring to 2002 " Standard for test methods of properties of ordinary concrete mixture of GB/T50080-
Standard " it carries out, concrete mix is shown in Table 1.
2. the polycarboxylic acids series TZ-GC high water reduction type that the production of Sichuan Tong Zhou Chemical Industry Science Co., Ltd is respectively adopted subtracts mother
Liquid, TZ-GZ poly-carboxylic high-performance slump retaining agent mother liquor and sodium gluconate retarder, by said mixture respectively with Examples 1 to 8
The agent on crack resistance of concrete bleeding inhibitor 13:1 in mass ratio of middle synthesis is configured to compound product and is tested, and blank control test is not mixed
Enter anti-bleeding inhibitor, compound scheme is shown in Table 2.
3. when testing concrete performance, water-reducing agent volume is 1.5% (mass percent volume) of cementitious material, remember respectively
The slump and divergence when record test the initial of concrete mix, 1h, 2h and 3h, unit mm, while record is first respectively
Begin and concrete state when 3h.Mechanical performance of concrete is according to " the normal concrete mechanical property test side GB/T50081-2002
Method " test, 3d, 7d, 28d compression strength of concrete are tested, test result is shown in Table 3.
1 concrete experiments match ratio (kg/m of table3)
| Grade | Water (W) | Cement (C) | Flyash (F) | Coarse sand (S1) | Fine sand (S2) | Ovum rubble (G) |
| C30 | 160 | 270 | 60 | 680 | 200 | 1050 |
2 compound scheme (g) of table
| High water reduction (GC) | Slump retaining agent (GZ) | Sodium gluconate (PN) | Anti- bleeding inhibitor (TJ) | Water (W) |
| 180 | 50 | 30 | 20 | 720 |
The test of 3 working performance of concrete of table
From 3 concrete test result of table, the concrete with diminishing function that is synthesized in the embodiment of the present invention 1~8
Anti- bleeding inhibitor make concrete it is wrapped it is good, not bleeding, do not grab bottom, intensity is high, there is preferable thickening, water retention property, 3h
Still there is good workability and higher slump-retaining energy afterwards, maintain good mobility, be suitble to long distance transportation
And it is easy to pumping construction.
Claims (10)
1. a kind of agent on crack resistance of concrete bleeding inhibitor with diminishing function, which is characterized in that the raw material including following mass fraction:
300~360 parts of unsaturated polyether polymeric monomer, 50~100 parts of unsaturated carboxylic acid, 20~30 parts of unsaturated amides, unsaturated sulfonic acid
Or 3~8 parts of its salt, 0.5~3.0 part of crosslinking agent, 4~6 parts of oxidant, 0.5~1.5 part of reducing agent, chain-transferring agent 1.0~1.5
Part, 450~500 parts of deionized water；The unsaturated polyether polymeric monomer, unsaturated carboxylic acid, unsaturated amides, unsaturated sulfonic acid or
Its salt and crosslinking agent, the ratio between their amount of substance are as follows: 1.0:7.0~8.0:2.0~3.0:0.2~0.5:0.02~0.05.
2. the agent on crack resistance of concrete bleeding inhibitor according to claim 1 with diminishing function, which is characterized in that including following
The raw material of mass fraction: 330 parts of unsaturated polyether polymeric monomer, 76.5 parts of unsaturated carboxylic acid, 30 parts of unsaturated amides, unsaturated sulphur
6.8 parts of acid or its salt, 0.8 part of crosslinking agent, 4.9 parts of oxidant, 0.73 part of reducing agent, 1.32 parts of chain-transferring agent, deionized water 485
Part；The unsaturated polyether polymeric monomer, unsaturated carboxylic acid, unsaturated amides, unsaturated sulfonic acid or its salt and crosslinking agent, they
The ratio between amount of substance are as follows: 1.0:7.45:2.2:0.24:0.038.
3. the agent on crack resistance of concrete bleeding inhibitor according to claim 1 or 2 with diminishing function, which is characterized in that described
Unsaturated polyether polymeric monomer is in allyl alcohol polyethenoxy ether, isoamyl alcohol polyoxyethylene ether and isobutene alcohol polyoxyethylene ether
One or two, molecular weight are 2400~3000.
4. the agent on crack resistance of concrete bleeding inhibitor according to claim 1 or 2 with diminishing function, which is characterized in that described
Unsaturated carboxylic acid is one or both of acrylic acid, methacrylic acid, maleic anhydride and fumaric acid.
5. the agent on crack resistance of concrete bleeding inhibitor according to claim 1 or 2 with diminishing function, which is characterized in that described
Unsaturated amides are acrylamide, Methacrylamide, N, N- dimethylacrylamide, N hydroxymethyl acrylamide and N- isopropyl
One or both of base acrylamide.
6. the agent on crack resistance of concrete bleeding inhibitor according to claim 1 or 2 with diminishing function, which is characterized in that described
Unsaturated sulfonic acid or its salt are 2- acrylamide-2-methyl propane sulfonic, methylpropene sodium sulfonate, Sodium Allyl Sulfonate and to benzene second
One or both of alkene sodium sulfonate.
7. the agent on crack resistance of concrete bleeding inhibitor according to claim 1 or 2 with diminishing function, which is characterized in that described
Crosslinking agent is in the double maleates of N,N methylene bis acrylamide, polyethylene glycol 400 diacrylate and polyethylene glycol 400
It is one or two kinds of；The chain-transferring agent is thioacetic acid, mercaptopropionic acid, mercaptoethanol, mercapto-propionate, mercaptopropionic acid ethyl ester
One or both of with isooctyl mercaptopropionate.
8. the agent on crack resistance of concrete bleeding inhibitor according to claim 1 or 2 with diminishing function, which is characterized in that described
Oxidant is one or both of hydrogen peroxide, ammonium persulfate, potassium peroxydisulfate, sodium peroxydisulfate and tert-butyl hydroperoxide.
9. the agent on crack resistance of concrete bleeding inhibitor according to claim 1 or 2 with diminishing function, which is characterized in that described
Reducing agent is vitamin C, rongalite, carving white zine, green vitriol, sodium dithionite, sodium thiosulfate, ortho phosphorous acid
At least two in sodium, sodium hydrogensulfite and sodium pyrosulfite.
10. the preparation method of the agent on crack resistance of concrete bleeding inhibitor as described in any one of claims 1 to 9 with diminishing function,
It is characterized by comprising the following steps:
(1) successively unsaturated polyether polymeric monomer, unsaturated amides, unsaturated sulfonic acid or its salt, oxidant and deionized water are added
Enter into reaction kettle, stirring and dissolving, is configured to the mixing primer solution that mass fraction is 50~60%；
(2) reducing agent, chain-transferring agent and deionized water are mixed, is configured to the solution A that mass fraction is 1.0~2.0%；It will not
Saturated carboxylic acid, crosslinking agent and deionized water mixing, are configured to the solution B that mass fraction is 50~70%；
(3) solution A is first added drop-wise in step (1) mixing primer solution obtained, control by reactor temperature at 15~30 DEG C
The time for adding of solution A processed is 2.5~3.0h, starts dropwise addition solution B again after 5~10min of solution A dropwise addition and is made to step (1)
Mixing primer solution in, control solution B time for adding be 2.0~2.5h, guarantee that solution A is later than solution B and drips, two kinds
After solution is added dropwise, continue 1.0~1.5h of stirring, finally adjusts pH value of solution with the sodium hydroxide solution that mass fraction is 30%
For value to 5.0~7.0, moisturizing is uniformly mixing to obtain the anti-bleeding inhibitor that solid content is 40wt%.
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