CN106830735A - A kind of concrete antifreezing pumping aid and preparation method thereof - Google Patents

A kind of concrete antifreezing pumping aid and preparation method thereof Download PDF

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Publication number
CN106830735A
CN106830735A CN201710034979.8A CN201710034979A CN106830735A CN 106830735 A CN106830735 A CN 106830735A CN 201710034979 A CN201710034979 A CN 201710034979A CN 106830735 A CN106830735 A CN 106830735A
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CN
China
Prior art keywords
component
concrete
organic
antifreezing
pumping aid
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Pending
Application number
CN201710034979.8A
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Chinese (zh)
Inventor
蔡雪玲
王毅
姜海东
王高明
郑春扬
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Jiangsu China Railway ARIT New Materials Co Ltd
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Jiangsu China Railway ARIT New Materials Co Ltd
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Priority to CN201710034979.8A priority Critical patent/CN106830735A/en
Publication of CN106830735A publication Critical patent/CN106830735A/en
Pending legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B40/00Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C04B40/0028Aspects relating to the mixing step of the mortar preparation
    • C04B40/0039Premixtures of ingredients
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2103/00Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/60Agents for protection against chemical, physical or biological attack

Abstract

The invention discloses a kind of concrete antifreezing pumping aid and preparation method thereof, the mass percent that its raw material components and each component account for raw material total amount is respectively:Guarantor is collapsed component:3% ~ 7%, accelerating component:8% ~ 15%, antifreezing component:3.0% ~ 10%, adhesion promoting component:0.5% ~ 1.0%, bleed component:0.1% ~ 0.4%, running water:65%~80%.The overall targets such as pumping of the present invention, early strength and anti-freezing property are good, and in can be applied to strength grade C20~C40 pump concretes at 10 DEG C~25 DEG C, strong adaptability, cost performance are high, environmentally friendly, be easy to store, transport and use.

Description

A kind of concrete antifreezing pumping aid and preparation method thereof
Technical field
The present invention relates to a kind of concrete antifreezing pumping aid and preparation method thereof, belong to concrete admixture application field.
Background technology
China three northern areas of China winter time is up to 4~5 months, and concrete works is frequently necessary to be applied under the conditions of low, subzero temperature Work, and rheological property of the concrete under the conditions of low, subzero temperature is poor, Slump Time losing of Large is larger and slump divergence then compared with Small, and under subzero temperature environment, concrete coagulating time is long, strength development is slow etc. for winter construction brings problems.In order to Ensure to ensure concrete construction progress and quality under the conditions of subzero temperature, mixing plant is often from addition early strength agent and the mode of antifreezing agent To reach antifreeze purpose.
In concrete construction mode, pumping mode is conventional means, it is desirable to which concrete workability is good, the big flowing of the slump Property is good.Due to reasons such as transportation ranges, it is desirable to which the guarantor that concrete has certain hour is collapsed requirement.
With the development of concrete technology, the requirement to concrete admixture is also improved constantly, multi-functional, compound coagulation Native additive becomes one of developing direction.Past, pumping admixture and antifreezing agent were all that admixture makes respectively within a very long time , and antifreezing agent and pumping admixture " double-doped " are used, and in addition to causing inconvenience to construction, often bring quality to ask to engineering Topic, such as, will have a strong impact on the intensity of concrete when in pumping admixture and antifreezing agent all mixed with bleed component.Apply for convenience Work, improves the quality of concrete, increasing to use the composite additive with pumping and antifreeze function.Deicing pump Sending agent can make pump concrete not produce freeze injury as one kind, and can be smoothed out pouring that must can not under the conditions of subzero temperature Few additive.
The content of the invention
Purpose:The present invention provides a kind of concrete antifreezing pumping aid and preparation method thereof, is used at -10 DEG C~-25 DEG C strong In degree grade C20-C40 pump concretes, its pumping, early strength and anti-freezing property are improved.
Technical scheme is as follows:
The mass percent that a kind of concrete antifreezing pumping aid, its raw material components and each component account for raw material total amount is respectively: Guarantor is collapsed component:3%~7%, accelerating component:8%~15%, antifreezing component:3.0%~10%, adhesion promoting component:0.5%~ 1.0%th, bleed component:0.1%~0.4%, running water:65%~80%.
Preferably, the accelerating component is ultra early-strength polycarboxylate water-reducer.
Preferably, the guarantor collapses component for polyocarboxy acid type slump retaining agent.
Preferably, the antifreezing component is calcium nitrate, sodium nitrate, one or more mixture of sodium acetate and is combined organic Hydramine compares the mixture obtained by being compounded with any.
Preferably, the adhesion promoting component is concrete macromolecule thickener.
Preferably, the air entraining agent is the one kind in soluble resin hydrochlorate or dodecyl sodium sulfate.
Preferably, the compound organic alcohol amine is that triisopropanolamine and modified hydramine organic micromolecule are compounded with any ratio The mixture for obtaining.
Preferably, the modified hydramine organic micromolecule is by polyamine organic micromolecule and epoxy organic micromolecule At a temperature of 65~80 DEG C, through 0.5~2h of catalytic reaction hours after, add 0.5~1h of organic acid reaction and obtain, wherein, it is many First amine organic molecule, epoxy organic micromolecule, organic acid, the mol ratio of catalyst is 1:(7~9):(4~6): (0.0005~0.001).
Preferably, the polyamine organic micromolecule is ethylenediamine, 1,3- propane diamine, Putriscine, 2- methylpents One kind in diamines or diethylenetriamines;The epoxy organic micromolecule is oxirane, expoxy propane, epoxy chloropropionate One kind of the bromo- 1,2- epoxy butanes of alkane, 1,2- epoxy butanes, 4-, 2,3- epoxy butanes or 1,2- epoxypentanes;The catalyst It is AlCl3、FeCl3、ZnCl2Or TiCl3In one kind;The organic acid is formic acid, acetic acid, citric acid, salicylic acid or ethanedioic acid In one kind.
A kind of preparation method of concrete antifreezing pumping aid, comprises the following steps that:First weigh 0.1%~0.4% bleed group Point, 65%~80% water after being allowed to be thoroughly mixed using blade stirring under normal temperature, adds 3.0%~10.0% antifreezing component simultaneously It is allowed to be completely dissolved, adds 8%~15% accelerating component, 3%~7% to protect collapse component, 0.5%~1.0% adhesion promoting component, normal temperature Lower use blade stirring is allowed to be thoroughly mixed, and wherein each component quality is weighed and is accurate to 0.01g.
Beneficial effect:The present invention provides a kind of concrete antifreezing pumping aid and preparation method thereof, its pumping, early strength It is good with the overall target such as anti-freezing property, in can be applied to strength grade C20~C40 pump concretes at -10 DEG C~-25 DEG C, Strong adaptability, cost performance are high, environmentally friendly, be easy to store, transport and use.
Specific embodiment
In order that those skilled in the art more fully understand the technical scheme in the application, below to the embodiment of the present application In technical scheme be clearly and completely described, it is clear that described embodiment is only some embodiments of the present application, Rather than whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not making creative labor The every other embodiment obtained under the premise of dynamic, should all belong to the scope of the application protection.
The mass percent that a kind of concrete antifreezing pumping aid, its raw material components and each component account for raw material total amount is respectively: Guarantor is collapsed component:3%~7%, accelerating component:8%~15%, antifreezing component:3.0%~10%, adhesion promoting component:0.5%~ 1.0%th, bleed component:0.1%~0.4%, running water:65%~80%.
Preferably, the accelerating component is ultra early-strength polycarboxylate water-reducer.The poly- carboxylic of ultra early-strength wherein of the present invention Sour water reducer is using the side described in Patent No. CN104761689A (a kind of preparation method of ultra early-strength polycarboxylate water-reducer) Prepared by method, made in water-soluble redox system by low alveolitoid polyether macromonomer A, polyether macromonomer B, minor comonomer C, minor comonomer D There is free radicals copolymerization reaction in aqueous medium under and be obtained.
Preferably, the guarantor collapses component for polyocarboxy acid type slump retaining agent.Wherein, polyocarboxy acid type slump retaining agent of the present invention is adopted Prepared with the method described in Patent No. CN104944827A (a kind of preparation method of slump-retaining polycarboxylic acid type water reducing agent), contained In amido copolymerization product plus epoxy radicals poly glycol monomethyl ether, after 10~50min of reaction, plus in alkali and adjustment pH value is 6~7, Slump-retaining polycarboxylic acid type water reducing agent is obtained;
Preferably, the antifreezing component is calcium nitrate, sodium nitrate, one or more mixture of sodium acetate and is combined organic Hydramine compares the mixture obtained by being compounded with any.
Preferably, the adhesion promoting component is concrete macromolecule thickener.Wherein, concrete macromolecule of the present invention increases Thick dose is prepared using the method described in Patent No. CN104231152A (a kind of preparation method of concrete thickener), by insatiable hunger Constituted in initiator and reducing agent with amide-type minor comonomer, unsaturated hydroxyl esters minor comonomer, unsaturated sulfonic acid class minor comonomer Oxidation-reduction system collective effect, carries out 3~5 hours water phase Raolical polymerizables and obtains at a temperature of being maintained at 35~80 DEG C To copolymerization product, the pH value of the copolymerization product that will then be obtained with alkali lye is adjusted to 6~7, add water obtain mass concentration for 3~ 10% concrete thickener, i.e. concrete macromolecule thickener;
Preferably, the air entraining agent is the one kind in soluble resin hydrochlorate or dodecyl sodium sulfate.
Preferably, the compound organic alcohol amine is that triisopropanolamine and modified hydramine organic micromolecule are compounded with any ratio The mixture for obtaining.
Preferably, the modified hydramine organic micromolecule is by polyamine organic micromolecule and epoxy organic micromolecule At a temperature of 65~80 DEG C, through 0.5~2h of catalytic reaction hours after, add 0.5~1h of organic acid reaction and obtain, wherein, it is many First amine organic molecule, epoxy organic micromolecule, organic acid, the mol ratio of catalyst is 1:(7~9):(4~6): (0.0005~0.001).
Preferably, the polyamine organic micromolecule is ethylenediamine, 1,3- propane diamine, Putriscine, 2- methylpents One kind in diamines or diethylenetriamines;The epoxy organic micromolecule is oxirane, expoxy propane, epoxy chloropropionate One kind of the bromo- 1,2- epoxy butanes of alkane, 1,2- epoxy butanes, 4-, 2,3- epoxy butanes or 1,2- epoxypentanes;The catalyst It is AlCl3、FeCl3、ZnCl2Or TiCl3In one kind;The organic acid is formic acid, acetic acid, citric acid, salicylic acid or ethanedioic acid In one kind.
A kind of preparation method of concrete antifreezing pumping aid, comprises the following steps that:First weigh 0.1%~0.4% bleed group Point, 65%~80% water after being allowed to be thoroughly mixed using blade stirring under normal temperature, adds 3.0%~10.0% antifreezing component simultaneously It is allowed to be completely dissolved, adds 8%~15% accelerating component, 3%~7% to protect collapse component, 0.5%~1.0% adhesion promoting component, normal temperature Lower use blade stirring is allowed to be thoroughly mixed, and wherein each component quality is weighed and is accurate to 0.01g.
Heretofore described ultra early-strength polycarboxylate water-reducer, slump-retaining polycarboxylic acid type water reducing agent, concrete macromolecule The preparation method of thickener is not limited only to preparation method described above, and the said components prepared by prior art are used equally to match somebody with somebody Make anti-freezing pumping agents of the invention.
Case study on implementation 1
Configuration 1000g concrete antifreezing pumping aids:Weigh 0.2% bleed component (soluble resin hydrochlorate), 73.8% water, After being allowed to be thoroughly mixed using blade stirring under normal temperature, the 10% antifreezing component (sodium acetate+0.5% of 5.5% calcium nitrate+4% is added Organic alcohol amine) and be allowed to be completely dissolved, add 8% accelerating component (ultra early-strength polycarboxylate water-reducer), 7% to protect component of collapsing and (gather Carboxylic acid type slump retaining agent), 1.0% adhesion promoting component (concrete macromolecule thickener), under normal temperature using blade stirring be allowed to mix completely Close, be obtained FD-1, wherein organic alcohol amine by triisopropanolamine and modified hydramine organic micromolecule with mass ratio be 1:1 prepare and .
Case study on implementation 2
Configuration 1000g concrete antifreezing pumping aids:Weigh 0.4% bleed component (soluble resin hydrochlorate), 77.1% water, After being allowed to be thoroughly mixed using blade stirring under normal temperature, (sodium acetate+1% of 2% calcium nitrate+1% is organic to add 4% antifreezing component Hydramine (wherein)) and be allowed to be completely dissolved, add 15% accelerating component (ultra early-strength polycarboxylate water-reducer), 3% to protect component of collapsing (polyocarboxy acid type slump retaining agent), 0.5% adhesion promoting component (concrete macromolecule thickener), has been allowed under normal temperature using blade stirring Full mixing, is obtained FD-2, wherein organic alcohol amine by triisopropanolamine and modified hydramine organic micromolecule with mass ratio be 1:1 matches somebody with somebody Make and obtain.
Case study on implementation 3
Configuration 1000g concrete antifreezing pumping aids:Weigh 0.3% bleed component (soluble resin hydrochlorate), 73.8% water, After being allowed to be thoroughly mixed using blade stirring under normal temperature, the 6% antifreezing component (sodium acetate+1.5% of 3% calcium nitrate+1.5% is added Organic alcohol amine) and be allowed to be completely dissolved, add 13% accelerating component (ultra early-strength polycarboxylate water-reducer), 6% to protect component of collapsing and (gather Carboxylic acid type slump retaining agent), 0.7% adhesion promoting component adhesion promoting component (concrete macromolecule thickener), under normal temperature using blade stirring make Be thoroughly mixed, FD-3 is obtained, wherein organic alcohol amine is with mass ratio by triisopropanolamine and modified hydramine organic micromolecule 1:1 prepares and obtains.
Application examples 1
With reference to JG/T377-2012《Concrete antifreezing pumping aid》The concrete deicing pump that standard is prepared to above-described embodiment Send agent to be detected, according to 3% incorporation concrete of Binder Materials in, in -15 DEG C, the maintenance of -20 DEG C of environment.Test result such as table 1:
Test result during 1 volume 3% of table
According to JG/T377-2012《Concrete antifreezing pumping aid》In to the regulation and engineering reality of anti-freezing pumping agents index Experience in the application of border, -15 DEG C are can be used in laboratory, and practical engineering application can be used on -20 DEG C;Can be used for -20 in laboratory DEG C, practical engineering application can be used on -25 DEG C of even more highs.
As known from Table 1, using concrete antifreezing pumping aid FD-1, FD-2, FD-3 of the invention, when volume is 3%, its Slump 1h rheological parameters' change with time amounts are respectively 30mm, 40mm, 25mm, illustrate that anti-freezing pumping agents of the invention protect effect of collapsing good, can Meet the movement requirement in engineering.
Meanwhile, using concrete antifreezing pumping aid FD-1, FD-2, FD-3 of the invention, in volume for 3% laboratory conserves Under the conditions of -15 DEG C of environment, its R-7 is respectively 18%, 19%, 17%, respectively 150%, 158%, the 142% of standard;Its R-7 + 28 are respectively 130%, 131%, 135%, and 50 freezing-thawing strength damages are led than low, and respectively 30%, 25%, 25%, it is much low In standard requirement;Under the conditions of volume is 3% -20 DEG C of laboratory care environments, its R-7 is respectively 14%, 12%, 13%, Meet index request under conditions of volume is low, its R-7+28 is respectively 122%, 124%, 127%, and 50 times freezing-thawing strength damage leads Than low, respectively 40%, 45%, 40%, well below standard requirement;Illustrate that anti-freezing pumping agents antifreezing effect of the invention shows Write, and late strength of concrete is high, for ensureing negative temperature concrete durability effect is significant.
Application examples 2
With reference to JG/T377-2012《Concrete antifreezing pumping aid》The concrete deicing pump that standard is prepared to above-described embodiment Send agent to be detected, according to 4% incorporation concrete of Binder Materials in, in -15 DEG C, the maintenance of -20 DEG C of environment.Test result is as follows Table 2:
Test result during 2 volume 4% of table
As known from Table 2, using concrete antifreezing pumping aid FD-1, FD-2, FD-3 of the invention, when volume is 4%, its Slump 1h rheological parameters' change with time amounts are respectively 20mm, 35mm, 30mm, and it is good that bright anti-freezing pumping agents of the invention protect effect of collapsing, Neng Gouman Movement requirement in sufficient engineering.
Meanwhile, using concrete antifreezing pumping aid FD-1, FD-2, FD-3 of the invention, in volume for 4% laboratory conserves Under the conditions of -15 DEG C of environment, its R-7 is respectively 23%, 25%, 22%, respectively 192%, 208%, the 183% of standard;Its R-7 + 28 are respectively 135%, 133%, 134%, and 50 freezing-thawing strength damages are led than low, and respectively 25%, 20%, 20%, it is much low In standard requirement;Under the conditions of volume is 4% -20 DEG C of laboratory care environments, its R-7 is respectively 17%, 18%, 16%, its R-7+28 is respectively 129%, 131%, 126%, and 50 freezing-thawing strength damages are led than low, and respectively 35%, 35%, 40%, far Far below standard requirement;Illustrate anti-freezing pumping agents antifreezing effect of the invention significantly, and late strength of concrete is high, for ensureing Negative temperature concrete durability effect is significant.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or uses the present invention. Various modifications to these embodiments will be apparent for those skilled in the art, as defined herein General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, the present invention The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one The scope most wide for causing.

Claims (10)

1. a kind of concrete antifreezing pumping aid, it is characterised in that:Its raw material components and each component account for the quality percentage of raw material total amount Than being respectively:Guarantor is collapsed component:3% ~ 7%, accelerating component:8% ~ 15%, antifreezing component:3.0% ~ 10%, adhesion promoting component:0.5%~1.0%、 Bleed component:0.1% ~ 0.4%, running water:65%~80%.
2. a kind of concrete antifreezing pumping aid according to claim 1, it is characterised in that:The accelerating component is super hardening Type polycarboxylate water-reducer.
3. a kind of concrete antifreezing pumping aid according to claim 1, it is characterised in that:The guarantor collapses component for polycarboxylic acids Type slump retaining agent.
4. a kind of concrete antifreezing pumping aid according to claim 1, it is characterised in that:The antifreezing component is nitric acid Calcium, sodium nitrate, one or more mixture of sodium acetate compare the mixture obtained by being compounded with compound organic alcohol amine with any.
5. a kind of concrete antifreezing pumping aid according to claim 1, it is characterised in that:The adhesion promoting component is concrete Macromolecule thickener.
6. a kind of concrete antifreezing pumping aid according to claim 1, it is characterised in that:The air entraining agent is set for soluble One kind in resin acid salt or dodecyl sodium sulfate.
7. a kind of concrete antifreezing pumping aid according to claim 4, it is characterised in that:The compound organic alcohol amine is three Isopropanolamine and modified hydramine organic micromolecule are with any mixture obtained than compounding.
8. a kind of concrete antifreezing pumping aid according to claim 7, it is characterised in that:The modified alcamines is organic small Molecule by polyamine organic micromolecule and epoxy organic micromolecule at a temperature of 65 ~ 80 DEG C, it is small through 0.5 ~ 2h of catalytic reaction Shi Hou, adds 0.5 ~ 1h of organic acid reaction and obtains, wherein, it is polyamine organic micromolecule, epoxy organic micromolecule, organic Acid, the mol ratio of catalyst is 1:(7~9):(4~6):(0.0005~0.001).
9. a kind of concrete antifreezing pumping aid according to claim 7, it is characterised in that organic small point of the polynary amine Son is the one kind in ethylenediamine, 1,3- propane diamine, 1,4- butanediamine, 2 methyl pentamethylenediamine or diethylenetriamines;The ring Oxygen organic micromolecule is oxirane, expoxy propane, epoxychloropropane, 1,2- epoxy butanes, bromo- 1, the 2- epoxies fourths of 4- One kind of alkane, 2,3- epoxy butanes or 1,2- epoxypentane;The catalyst is AlCl3、FeCl3、ZnCl2Or TiCl3In It is a kind of;The organic acid is the one kind in formic acid, acetic acid, citric acid, salicylic acid or ethanedioic acid.
10. a kind of preparation method of concrete antifreezing pumping aid as described in claim 1-9, it is characterised in that specific steps It is as follows:0.1% ~ 0.4% bleed component is first weighed, 65% ~ 80% water after being allowed to be thoroughly mixed using blade stirring under normal temperature, is added 3.0% ~ 10.0% antifreezing component simultaneously is allowed to be completely dissolved, and adds 8% ~ 15% accelerating component, 3% ~ 7% to protect component of collapsing, 0.5% ~ 1.0% increasing Viscous component, is allowed to be thoroughly mixed under normal temperature using blade stirring, and wherein each component quality is weighed and is accurate to 0.01g.
CN201710034979.8A 2017-01-18 2017-01-18 A kind of concrete antifreezing pumping aid and preparation method thereof Pending CN106830735A (en)

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CN107188452A (en) * 2017-06-28 2017-09-22 常州建轩纺织品有限公司 A kind of concrete pumping antifreezing agent and preparation method thereof
CN108863146A (en) * 2018-07-25 2018-11-23 长安大学 A kind of compound liquid anti-freezing pumping agents and preparation method thereof
CN108863156A (en) * 2018-08-09 2018-11-23 马永胜 A kind of concrete pump-feed agent
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CN107188452A (en) * 2017-06-28 2017-09-22 常州建轩纺织品有限公司 A kind of concrete pumping antifreezing agent and preparation method thereof
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CN108863156A (en) * 2018-08-09 2018-11-23 马永胜 A kind of concrete pump-feed agent
CN109928665A (en) * 2019-05-07 2019-06-25 杭州中荷智慧城市科技有限公司 A kind of concrete admixture
CN109928665B (en) * 2019-05-07 2021-07-20 广西南宁市邦之筑建材有限公司 Concrete additive

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Application publication date: 20170613