CN101407386A - High dispersing plasticizing adulterating agent for cement concrete - Google Patents
High dispersing plasticizing adulterating agent for cement concrete Download PDFInfo
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- CN101407386A CN101407386A CNA2007101638503A CN200710163850A CN101407386A CN 101407386 A CN101407386 A CN 101407386A CN A2007101638503 A CNA2007101638503 A CN A2007101638503A CN 200710163850 A CN200710163850 A CN 200710163850A CN 101407386 A CN101407386 A CN 101407386A
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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
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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
- C04B24/24—Macromolecular compounds
- C04B24/28—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B24/32—Polyethers, e.g. alkylphenol polyglycolether
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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
- C04B2103/0045—Polymers chosen for their physico-chemical characteristics
- C04B2103/0059—Graft (co-)polymers
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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
- C04B2103/0068—Ingredients with a function or property not provided for elsewhere in C04B2103/00
- C04B2103/0082—Segregation-preventing agents; Sedimentation-preventing agents
- C04B2103/0083—Bleeding-preventing agents
-
- 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
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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
- C04B2103/34—Flow improvers
-
- 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
- C04B2103/40—Surface-active agents, dispersants
- C04B2103/408—Dispersants
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to a plasticizing addition agent used by cement concrete and a production method thereof, wherein, the addition agent is obtained from the copolymerization of a fat unsaturated alkyl monomer with a polyoxyalkylene chain, monoalkyl polyglycol ether or an unsaturated acid ester monomer of the polyglycol ether, unsaturated carboxylic acid and the salt monomer thereof, and the like under the initiating condition. The addition agent is characterized by simple production process, easy operation, energy saving, no production waste or byproducts and obviously increased fluidity after the addition of cement concrete, and has the advantages of inhibiting the over-time variation of cement fluidity or thickness, improving the defective bleeding and dispersion phenomena of the cement concrete and solving the problem of quick loss of the cement concrete thickness owing to the impact of temperature factors. The solid addition amount is 0.15-0.4 percent of the weight of the cement gelled materials, and the water amount can be reduced by 40 percent to the greatest extent. Therefore, the addition agent can be applied to the projects of common concrete, long-distance transport concrete, large-fluidity concrete, high-strength concrete, hydraulic massive concrete, rolled concrete, and the like.
Description
Technical field
The present invention relates to Cement Concrete and mix and stir the fluidizer and the production technical field of usefulness.Product is that blending is used in the mix that Additives such as water/cement component and flyash, slag and sandstone aggregate are formed, and mixes and stirs to give mix that the water yield reduces, bleeding quantity minimizing or improvement, Segregation minimizing, good fluidity and the mobile performance that keeps excellence such as good.
Background technology
Cement Concrete is the main material of construction of engineerings such as water conservancy and hydropower, industry and covil construction, railway, town road, bridge.Cement Concrete requires to have higher intensity and good construction performance usually, adopted since the fifties and mixed the water consumption that the adulterating agent with efficient dispersing property reduces concrete, increase the intensity of concrete, applied in this field naphthalenesulfonate system and terpolycyantoamino-formaldehyde resin are arranged is kinds such as dispersant with high efficiency, but because Cement Concrete needs transportation in construction process, cast, pave etc., generally need last 30min～120min, mix naphthalenesulfonate system and terpolycyantoamino-formaldehyde resin and be dispersant with high efficiency but can not solve the concrete denseness through the time problem that diminishes, be transported to the 30in～90min in building site after the time as Commercial Concrete through stirring station, the concrete slump is usually by dropping to 10～16cm about 20cm, influence normal pouring construction, sometimes Commercial Concrete may be used as unacceptable product and return, and this phenomenon is especially outstanding in summer.For improving this deficiency, often take the slow setting time of the method postponement Cement Concrete of admixture retardant, corresponding improve denseness through the time change, to keep its effect often very poor but only improve the flowability of concrete or denseness by the method for mixing retardant, can not satisfy the needs of construction.On the other hand, the alkali content of efficient plasticizing adulterating agents such as known naphthalenesulfonate system and terpolycyantoamino-formaldehyde resin system is higher, and solid part alkali content reaches about 20% sometimes, is unfavorable for preventing the deleterious alkali-aggregate reaction of Cement Concrete.These adulterating agent products are that to adopt formaldehyde be that condensing agent carries out polycondensation and forms, and production process can cause pollution because of the volatilization of formaldehyde.
The nineties in 20th century, Japan's a kind of novel carboxylic acid polymer cement concrete adulterating agent that begins one's study, this series products is to adopt different unit to cause the tensio-active agent that copolymerization forms by regulating molecular structure, molecular structure is thin type, have high diminishing and make the concrete mix have the good effect of keeping, now replaced traditional naphthalenesulfonate system and terpolycyantoamino-formaldehyde resin class adulterating agent substantially.China recent years has also begun research to carboxylic-acid Cement Concrete adulterating agent, lacks owing to raise variety in China domestic market, and degree of mobilization keeps performance undesirable, and imported product is difficult to large scale application owing to cost an arm and a leg.
The carboxylic acid polyalcohol class adulterating agent production method of present report; mostly be that the big monomer that carries out earlier the polyoxyethylene esterification under nitrogen protection or solvent synthesizes; carry out multiple monomeric copolymerization then, generate the water-soluble plasticizing admixture that has side chain with certain molecular weight scope.The first step is because condition is difficult to control, big monomeric quality is difficult to guarantee stable, last quality product is undesirable, and solvent to remove intractability big, general being difficult for successfully operates for medium and small manufacturer, even toxic, contaminate environment, the long time of the second step reaction needed also adds the solvent (as butanone, methylethylketone, toluene etc.) that is difficult for removing and influencing quality sometimes.Report as CN1316398A, adopt methyl polyoxyethylene ether, Resorcinol and catalyzer, in reactor, drip methyl methacrylate, reacted then 8 ± 0.5 hours, reaction generates methacrylic acid methyl polyoxyethylene ether-ester, adds the butanone solution of butanone, dropping methacrylic acid and dibenzoyl peroxide again, underpressure distillation after the polyreaction, steaming desolventizes, and obtains concrete high-performance and disperses admixture.Reaction conditions requires high, complex manufacturing.
Summary of the invention
The invention provides a kind of Cement Concrete with the plasticizing admixture, so that Cement Concrete possesses efficient water-reducing property, denseness keeps, improves multi-functional high performance technical requirementss such as bleeding segregation.
Investigator of the present invention passes through great deal of experimental, found and utilized the fatty unsaturated alkyl monomer, the unsaturated acid ester polyglycol ether grafted monomer that have polyoxyalkylene chain to carry out dispersiveness and the denseness maintenance function of copolymerization with the improvement cement slurry, two monomers are by adjusting molar ratio or using fatty unsaturated alkyl monomer and other monomer copolymerizations of the present invention of having polyoxyalkylene chain all can obtain good effect separately, and production technique is as follows:
In the presence of causing, carry out aqueous solution copolymerization by unsaturated acid ester monomer b, the monomer c of the fatty unsaturated alkyl monomer a, mono-alkyl polyethylene glycol ether or the polyglycol ether that have polyoxyalkylene chain, monomer d in proportion and close, and use alkali to neutralize and obtain; The molecular structural formula that has the fatty unsaturated alkyl monomer a of polyoxyalkylene chain is: R1-(AO) n-R2; R1 represents fatty unsaturated hydrocarbon group, comprises vinyl, methacrylic, vinyl carbinol; The R2 representation hydrocarbyl, AO represents oxyalkylene group, is EO addition or EO and PO block affixture, and the addition mole number of polyoxyalkylene chain is 9～90;
The unsaturated acid ester monomer b of mono-alkyl polyethylene glycol ether or polyglycol ether carries out graft reaction by mono-alkyl polyethylene glycol ether or polyglycol ether or mono-alkyl polyethylene glycol ether and polyglycol ether mixture and unsaturated acid to obtain, and the used unsaturated acid of graft reaction is a kind of of methacrylic acid, vinylformic acid, maleic anhydride; The long-chain addition mole number of mono-alkyl polyethylene glycol ether or polyglycol ether is 9～130;
Monomer c is the combination of a kind of of band unsaturated double-bond organic monomer or two kinds, three kinds band unsaturated double-bond organic monomers, and band unsaturated double-bond organic monomer comprises methacrylic acid, vinylformic acid, acrylic amine, methylene-succinic acid, maleic anhydride, toxilic acid half amide, citraconic acid; Monomer d is a kind of in vinylbenzene, styrene sulfonate, toxilic acid alkyl ester, acrylamide, methylpropene sodium sulfonate, the vinyl acetate between to for plastic.
The fatty unsaturated alkyl monomer a that has polyoxyalkylene chain: the unsaturated acid ester monomer b of mono-alkyl polyethylene glycol ether or polyglycol ether: monomer c: the mol ratio of monomer d is 1～2: 0～1: 3～15: 0.5～5.Monomer a and described molar weight are necessary; Monomer b and monomer a play similar function and auxiliary effect, and the mol ratio of monomer b is to represent without monomer b in 0 o'clock; Monomer c has unsaturated double-bond, can be used singly or in combination according to the integral molar quantity of described band unsaturated double-bond organic monomer.
Monomer copolymerizable reaction of the present invention is to carry out under aqueous conditions, and the monomer total content in the aqueous solution is selected between 10%～80% by weight.
Polymerization initiator can adopt one or both of benzoyl peroxide, Diisopropyl azodicarboxylate, Potassium Persulphate, ammonium persulphate, hydrogen peroxide compound, and usage and consumption are determined according to reaction system, can select the kind and the consumption of initiator according to disclosed knowledge.The consumption of general initiator is 0.5%～10% of a total monomer weight.The copolymerization Heating temperature is 30～100 ℃, and total reaction time is 2～10 hours.
Adulterating agent of the present invention can use separately, also can make up the composite Cement Concrete composition that is used for jointly with air entrapment agent, defoamer, retardant.
Cement Concrete plasticizing admixture of the present invention has the low characteristics of product alkali content, and the product alkali content can be controlled in below 2%, helps suppressing the deleterious alkali-aggregate reaction of Cement Concrete; its preparation technology is simple; temperature of reaction is low, and the reaction times is short, and is easy to operate; save the energy; it is all very little to consume energy during production charges, and no processing waste or byproduct help the production process environment protection; productive labor condition preferably is provided, has been fit to mass-producing and produces in batches.Adulterating agent volume of the present invention is few, the volume of general working substance is 0.15%～0.35%, water-reducing effect is good, after mixing Cement Concrete the Cement Concrete flowability is enlarged markedly, can effectively suppress concrete degree of mobilization or denseness through the time change, improve concrete bleeding segregation phenomenon, the denseness that solves Cement Concrete is subjected to the influence of temperature factor to lose problem faster, its water-reducing rate can reach 20%～40% after tested, the slump of Cement Concrete is not lost in the time substantially at 60～120min, satisfy the construction of Cement Concrete condition in each in season, early strength and later strength are all very high, can be applicable to ordinary concrete, remote transportation concrete, the high flowability concrete, high strength concrete, in the engineerings such as water conservancy project prevention of mass concrete and Compacted Concrete.
Embodiment
Adulterating agent of the present invention implements to be mixed for comprising cement, sand-cement slurry, Cement Concrete, adds cement dispersants or composition as high performance concrete, to improve fresh concrete workability, high fluidity and to improve slump, low viscosity and good working performance.From keeping the slump angle, need polyoxyethylene group and unsaturated aliphatic hydrocarbon base or two key additions of unsaturated carboxylic acid or esterification, and in multipolymer, will guarantee certain ratio than the long-chain joint.
Unsaturated polycarboxylic acid monomer comprises as methacrylic acid, vinylformic acid, sodium methacrylate, sodium acrylate, methacrylic acid amino, methylene-succinic acid, toxilic acid (acid anhydride), toxilic acid half amide, citraconic acid etc.Its best embodiment is used singly or in combination to obtain the effect judgement, and the adding purpose of monomer such as vinylbenzene, styrene sulfonic acid (salt), toxilic acid alkyl ester, (methyl) acrylamide, (methyl) sodium allyl sulfonate, vinyl acetate between to for plastic is to obtain better flowability.
Characteristics of the present invention are that monomeric copolymerization carries out under aqueous conditions, is medium with water, not only makes things convenient for and saves cost, more helps environment protection.The monomer total content can be selected between 10%～80% in the aqueous solution, transportation for convenience and preparation solid or sheet, powder-like product, and it is most preferred selecting 50%～80% weight percent concentration.
Adulterating agent of the present invention can join in the grout, can join in cement, flyash, mineral powder, sand, the stone mixture with water to stir.Add-on is by the requirement control that is fit to, the amount of admixture of the present invention in the cement composition, preferably be not less than based on 0.15% (solid weight meter) of gelling material and be not more than 0.5% (solid weight meter) based on gelling material, the few effect of add-on is undesirable, and add-on is many will to cause separating of aggregate and grout.
Embodiments of the invention following (embodiment has indicated implementation method of the present invention, but the present invention never is limited to the scope of given embodiment):
PC-1 synthesizes embodiment: install 1 in thermometer on the four-hole reactor, 1 of dropping funnel, middle dress agitator, add a certain amount of water, with 2mol polyoxyalkylene chain allyl monomer, 1mol methoxyl group polyoxyethylene monomethacrylates joins in the reactor, heated and stirred makes dissolving then, under 80 degree conditions, drip the Ammonium Persulfate 98.5 initiator solution of 2mol methacrylic acid and 0.7mol acrylamide soln and monomer total amount 0.05% (mol ratio) simultaneously, dropping time 1h, dropwise back 80 degree insulation 4h, the cooling cooling, in reactor, add the neutralization of NaOH solution, make PH=7, water is regulated product and is made that to contain thing admittedly be 20%, obtains flaxen transparent liquid PC-1.
PC-2 synthesizes embodiment: install 1 in thermometer on the four-hole reactor, 1 of dropping funnel, 1 of logical nitrogen tube, middle dress agitator, add a certain amount of water, feed the air in the nitrogen replacement reactor, with 2mol polyoxyalkylene chain allyl monomer, 1mol methallylsulfonic acid sodium joins in the reactor, heated and stirred makes dissolving then, the Ammonium Persulfate 98.5 initiator solution of while Dropwise 5 mol methacrylic acid and 0.5mol toxilic acid alkyl ester and monomer total amount 0.05% (mol ratio) under 80 degree conditions, dropping time 1h, dropwise back 80 degree insulation 4h, the cooling cooling adds the neutralization of NaOH solution in reactor, make PH=7, water is regulated product and is made that to contain thing admittedly be 20%, obtains flaxen transparent liquid PC-2.
PC-3 synthesizes embodiment: install 1 in thermometer on the four-hole reactor, 1 of dropping funnel, middle dress agitator, add a certain amount of water, 1mol polyoxyalkylene chain allyl monomer is joined in the reactor, heated and stirred makes dissolving then, under 80 degree conditions, drip the Ammonium Persulfate 98.5 initiator solution of 3mol toxilic acid and the semi-annular jade pendant acid of 0.3mol vinylbenzene and monomer total amount 0.05% (mol ratio) simultaneously, dropping time 1h, dropwise back 80 degree insulation 4h, the cooling cooling adds the neutralization of NaOH solution in reactor, make PH=7, the water yield that when beginning control reaction adds is 70% transparent liquid PC-3 admittedly contain thing.
Adulterating agent of the present invention is used for grout, mortar and Portland cement concrete and high strength cement concrete, composition can make mineral powder, stone flour in small, broken bits, sand, cobble and mechanical lithotripsies such as water, cement, flyash, blast-furnace slag, its water is the same with dispersion agent commonly used with the ratio of cement or gelling material, more preferably no more than 0.35 mass ratio, to give full play to the advantage of admixture of the present invention, obtain the higher intensity of sclerosis concrete.
Cement composition is introduced admixture of the present invention, can allow to introduce other additive simultaneously, as other polymers of carboxylic acid admixture, air entrapment agent, defoamer, swelling agent, water-resisting agent, retardant, economization agent, hardening accelerator etc.The most frequently used retardant is in order to prolong the time of coagulation of cement composition, to comprise gluconate, Sodium hexametaphosphate 99, tripoly phosphate sodium STPP, sulfonated lignin etc.
According to prescription of the present invention and production technique, can low-cost, the reaction times is short, processing step is few, produce the measured product of matter under the convenience such as easy and simple to handle.
Claims (8)
1. plasticizing admixture that Cement Concrete is mixed, it is to carry out aqueous solution copolymerization by unsaturated acid ester monomer b, the monomer c of the fatty unsaturated alkyl monomer a, mono-alkyl polyethylene glycol ether or the polyglycol ether that have polyoxyalkylene chain, monomer d in proportion in the presence of causing to close, and uses alkali to neutralize and obtain; The molecular structural formula that has the fatty unsaturated alkyl monomer a of polyoxyalkylene chain is: R1-(AO) n-R2; R1 represents fatty unsaturated hydrocarbon group, comprises vinyl, methacrylic, vinyl carbinol; The R2 representation hydrocarbyl, AO represents oxyalkylene group, is EO addition or EO and PO block affixture, and the addition mole number of polyoxyalkylene chain is 9～90;
The unsaturated acid ester monomer b of mono-alkyl polyethylene glycol ether or polyglycol ether carries out graft reaction by mono-alkyl polyethylene glycol ether or polyglycol ether or mono-alkyl polyethylene glycol ether and polyglycol ether mixture and unsaturated acid to obtain, and the used unsaturated acid of graft reaction is a kind of of methacrylic acid, vinylformic acid, maleic anhydride; The long-chain addition mole number of mono-alkyl polyethylene glycol ether or polyglycol ether is 9～130;
Monomer c is the combination of a kind of of band unsaturated double-bond organic monomer or two kinds, three kinds band unsaturated double-bond organic monomers, and band unsaturated double-bond organic monomer comprises methacrylic acid, vinylformic acid, acrylic amine, methylene-succinic acid, maleic anhydride, toxilic acid half amide, citraconic acid; Monomer d is a kind of in vinylbenzene, styrene sulfonate, toxilic acid alkyl ester, acrylamide, methylpropene sodium sulfonate, the vinyl acetate between to for plastic.
2. Cement Concrete according to claim 1 is with plastifying admixture, and it is characterized in that having the fatty unsaturated alkyl monomer a of polyoxyalkylene chain: the unsaturated acid ester monomer b of mono-alkyl polyethylene glycol ether or polyglycol ether: monomer c: the mol ratio of monomer d is 1～2: 0～1: 3～15: 0.5～5.
3. Cement Concrete according to claim 1 and 2 is characterized in that with the plasticizing admixture monomer a and described molar weight are necessary; Monomer b and monomer a play similar or auxiliary effect, and monomer b mol ratio is to represent without monomer b in 0 o'clock; Monomer c has unsaturated double-bond, can be used singly or in combination according to the integral molar quantity of described band unsaturated double-bond organic monomer.
4. according to Cement Concrete according to claim 1 plasticizing admixture, it is characterized in that monomeric copolymerization is to carry out under aqueous conditions, the monomeric total content in the aqueous solution is selected between 10%～80% by weight.
5. Cement Concrete as claimed in claim 1 is with plastifying adulterating agent, it is characterized in that, described polymerization initiator can adopt one or both of benzoyl peroxide, Diisopropyl azodicarboxylate, Potassium Persulphate, ammonium persulphate, hydrogen peroxide compound, and usage and consumption are determined according to reaction system.
6. method according to claim 1 is characterized in that, the copolymerization Heating temperature is 30～100 ℃, and total reaction time is 2～10 hours.
7. Cement Concrete as claimed in claim 3 is characterized in that with the plasticizing admixture consumption of initiator is 0.5%～10% of a total monomer weight.
8. a kind of concrete according to claim 1 is with plastifying adulterating agent, and it is characterized in that: this adulterating agent also can make up the composite Cement Concrete composition that is used for jointly with air entrapment agent, defoamer, retardant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101638503A CN101407386A (en) | 2007-10-10 | 2007-10-10 | High dispersing plasticizing adulterating agent for cement concrete |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101638503A CN101407386A (en) | 2007-10-10 | 2007-10-10 | High dispersing plasticizing adulterating agent for cement concrete |
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| CN101407386A true CN101407386A (en) | 2009-04-15 |
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| CNA2007101638503A Pending CN101407386A (en) | 2007-10-10 | 2007-10-10 | High dispersing plasticizing adulterating agent for cement concrete |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101597352B (en) * | 2009-06-26 | 2011-05-18 | 北京化工大学 | Crosslinking sodium p-styrenesulfonate-maleic anhydride high polymer and photopolymerization preparation method thereof |
| CN102408528A (en) * | 2011-10-13 | 2012-04-11 | 陕西科技大学 | Preparation method for polycarboxylic acid water reducer with strong adaptability |
| CN102443115A (en) * | 2011-10-14 | 2012-05-09 | 李小宝 | Method for producing slow-release cement dispersing agents |
| CN102504133A (en) * | 2011-10-14 | 2012-06-20 | 李小宝 | Method for producing block-type ether cement dispersant |
| CN103384651A (en) * | 2010-12-24 | 2013-11-06 | Sika技术股份公司 | Polymer made from maleic acid, allyl ether, and vinyl acetate, production of said polymer, and use of said polymer |
| CN108275941A (en) * | 2018-01-25 | 2018-07-13 | 四川通德商品混凝土有限公司 | Clear-water concrete compound additive and clear-water concrete |
| CN109071345A (en) * | 2016-04-26 | 2018-12-21 | 陶氏环球技术有限责任公司 | The insensitive concrete superplasticizer of clay |
-
2007
- 2007-10-10 CN CNA2007101638503A patent/CN101407386A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101597352B (en) * | 2009-06-26 | 2011-05-18 | 北京化工大学 | Crosslinking sodium p-styrenesulfonate-maleic anhydride high polymer and photopolymerization preparation method thereof |
| CN103384651A (en) * | 2010-12-24 | 2013-11-06 | Sika技术股份公司 | Polymer made from maleic acid, allyl ether, and vinyl acetate, production of said polymer, and use of said polymer |
| CN102408528A (en) * | 2011-10-13 | 2012-04-11 | 陕西科技大学 | Preparation method for polycarboxylic acid water reducer with strong adaptability |
| CN102408528B (en) * | 2011-10-13 | 2013-01-02 | 陕西科技大学 | Preparation method for polycarboxylic acid water reducer with strong adaptability |
| CN102443115A (en) * | 2011-10-14 | 2012-05-09 | 李小宝 | Method for producing slow-release cement dispersing agents |
| CN102504133A (en) * | 2011-10-14 | 2012-06-20 | 李小宝 | Method for producing block-type ether cement dispersant |
| CN102504133B (en) * | 2011-10-14 | 2014-02-26 | 李小宝 | Method for producing block-type ether cement dispersant |
| CN102443115B (en) * | 2011-10-14 | 2015-04-15 | 李小宝 | Method for producing slow-release cement dispersing agents |
| CN109071345A (en) * | 2016-04-26 | 2018-12-21 | 陶氏环球技术有限责任公司 | The insensitive concrete superplasticizer of clay |
| CN108275941A (en) * | 2018-01-25 | 2018-07-13 | 四川通德商品混凝土有限公司 | Clear-water concrete compound additive and clear-water concrete |
| CN108275941B (en) * | 2018-01-25 | 2020-07-14 | 龙南恒沣建材有限公司 | Fair-faced concrete composite additive and fair-faced concrete |
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Open date: 20090415 |