CN104098286A - Special concrete pumping agent for ultra-high buildings and preparation method thereof - Google Patents
Special concrete pumping agent for ultra-high buildings and preparation method thereof Download PDFInfo
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Abstract
The invention relates to a special concrete pumping agent for ultra-high buildings. The special concrete pumping agent is prepared from raw materials of polyether monomers containing double bonds, unsaturated carboxylic acid and derivative monomers thereof, unsaturated carboxylic acid ester and derivative monomers thereof, a bleeding-improved assistant, a chain transfer agent and an initiator, wherein water reducing agents are composed of polyether monomers containing double bonds, unsaturated carboxylic acid and derivative monomers thereof, unsaturated carboxylic acid ester and derivative monomers thereof and bleeding improved assistants; the adding amount of the initiators and the adding amount of the chain transfer agents are 0.2-0.5% and 0.05-0.2% of the total weight of water reducing agents respectively. The special concrete pumping agent does not need to be compounded with other additives, is simple in ingredients, has effects of water reducing and slump conserving on concrete, reduces initial viscosity of concrete, avoids the bleeding phenomenon in ultra-high concrete pumping, and is suitable for smooth pumping of concrete to ultra-high buildings over 100 meters.
Description
Technical field
The present invention relates to building material technical field, be specifically related to special-purpose pumping agent of a kind of high-rise building concrete and preparation method thereof.
Background technology
Along with increasing of construction engineering, pump concrete is widely used, because building concrete intensity is high, viscosity greatly, easy segregation, therefore in the easy appearance of the pumping procedure damage of seriously collapsing, in order to reduce the damage of collapsing of building concrete pumping procedure, generally in concrete, add admixture, in order to concrete is realized to diminishing guarantor, collapse, the damage that reduces to collapse, reduces pumping difficulty.At present, most of pumping agent need to obtain by method of double crossing, several water reducers of applying with routine, for example poly carboxylic acid series water reducer and retardant, water-holding agent, the auxiliary agents such as air entrapment agent are mixed to get according to a certain percentage, but this class concrete admixture forms more complicated, preparation process is cumbersome, and only effective during centering low layer concrete pumping, for Highrise buildings concrete pumping, particularly during 100 meters of above high-rise building concrete pumpings, need pumping pressure very high, and high pressure can cause concrete to occur bleeding problem, cause concrete disintegration, seriously collapse and damage or stifled pump, concrete pumping difficulty.
Summary of the invention
Technical problem to be solved by this invention is to provide special-purpose pumping agent of a kind of high-rise building concrete and preparation method thereof for the deficiency of above-mentioned prior art existence, and it forms simple, occurs Qinshui phenomenon while avoiding Super High concrete pumping.
The present invention is that the technical scheme that the problem of the above-mentioned proposition of solution adopts is:
The special-purpose pumping agent of a kind of high-rise building concrete, it is prepared from by the raw material that comprises double bond containing polyether monomer, unsaturated carboxylic acid and derivatives monomer thereof, esters of unsaturated carboxylic acids and derivatives monomer thereof, the improved-type auxiliary agent of bleeding, chain-transfer agent, initiator, and wherein double bond containing polyether monomer, unsaturated carboxylic acid and derivatives monomer thereof, esters of unsaturated carboxylic acids and derivatives monomer thereof, the improved-type auxiliary agent of bleeding form water reducer jointly; The add-on of described initiator is 0.2～0.5% of described water reducer gross weight, and the add-on of described chain-transfer agent is 0.05～0.2% of described water reducer gross weight.
Press such scheme, by weight percentage, its each component concentration is as follows for described water reducer: double bond containing polyether monomer 60～90%, unsaturated carboxylic acid and derivatives monomer 8～30% thereof, esters of unsaturated carboxylic acids and derivatives monomer 1～10% thereof, the improved-type auxiliary agent 1～10% of bleeding.
Press such scheme, the chemical structural formula of described double bond containing polyether monomer as shown in Equation 1:
In formula 1, R
1and R
2represent respectively a kind of in the alkyl of hydrogen atom or 1～3 carbon atom; X is a kind of in the alkyl of carbon atom, methylene radical or 1～10 carbon atom; R
3o is the alkoxyl group of 2～5 carbon atoms, the polymerization degree that a is this alkoxyl group, and its value is 9～100; R
4alkyl for hydrogen atom or 1～3 carbon atom; N is the polymerization degree, and its value is 9～100.
Press such scheme, the chemical structural formula of described unsaturated carboxylic acid and derivatives monomer thereof as shown in Equation 2:
In formula 2, R
5and R
6represent respectively a kind of in hydrogen atom, methyl or carboxyl and R
5and R
6can not be carboxyl simultaneously; R
7represent a kind of in hydrogen atom, methyl or carboxyl; M represents a kind of in hydrogen atom, monovalent metallic ion or divalent-metal ion; M is the polymerization degree, and its value is 9～100.
Press such scheme, described esters of unsaturated carboxylic acids and derivatives monomer thereof are one or more mixtures in any proportion in methyl acrylate, ethyl propenoate, isobutyl acrylate, Hydroxyethyl acrylate, Propylene glycol monoacrylate, methyl methacrylate, β-dimethyl-aminoethylmethacrylate, Propenoic acid, 2-methyl, isobutyl ester.
Press such scheme, the improved-type auxiliary agent of described bleeding is starch acrylamide acid esters a kind of of acrylamide monomer or molecular weight 1000～10000.
Press such scheme, described chain-transfer agent is one or more mixtures in any proportion in mercaptoethanol, 2-hydroxyl propylmercaptan, Thiovanic acid, 2 mercaptopropionic acid, 3-thiohydracrylic acid, 2-dimercaptosuccinic acid.
Press such scheme, described initiator is one or more mixtures in any proportion in ammonium persulphate, Potassium Persulphate, Diisopropyl azodicarboxylate.
The preparation method of the special-purpose pumping agent of above-mentioned high-rise building concrete, comprises the steps:
1) with said ratio, take containing 1～10 part of two strong 60～90 parts of polyether monomers, unsaturated carboxylic acid and 8～30 parts of derivatives monomers thereof, esters of unsaturated carboxylic acids and 1～10 part of derivatives monomer thereof, the improved-type auxiliary agent in Qinshui, wherein double bond containing polyether monomer, unsaturated carboxylic acid and derivatives monomer thereof, esters of unsaturated carboxylic acids and derivatives monomer thereof, the improved-type auxiliary agent of bleeding form water reducer jointly, the amount that takes initiator is 0.2～0.5% of described water reducer gross weight, the amount that takes chain-transfer agent is 0.05～0.2% of described water reducer gross weight, standby;
2) unsaturated carboxylic acid and derivatives monomer, esters of unsaturated carboxylic acids and derivatives monomer thereof, chain-transfer agent are jointly dissolved in to water and are made into water solution A, initiator is dissolved in to water and is made into aqueous solution B;
3) under nitrogen atmosphere, double bond containing polyether monomer and the improved-type auxiliary agent of bleeding are added to the water, after being stirred to the improved-type auxiliary agent in double bond containing polyether monomer and Qinshui and dissolving completely, are warming up to 60～80 ℃, drip water solution A and aqueous solution B, time for adding controls to 1～4h simultaneously; Dropwise rear insulation reaction 1～3.5h, after reaction finishes, cooling adds alkali and a small amount of water, and to be adjusted to pH be 6～7, obtains the special-purpose pumping agent of high-rise building concrete.
Press such scheme, described water solution A, aqueous solution B and step 3) in the amount of water according to practical situation, determine, according to the solid content requirement of the special-purpose pumping agent of prepared high-rise building concrete, can calculate the total amount of required water in preparation process, conventionally make the solid content of the special-purpose pumping agent of gained high-rise building concrete at 30-60%.
Press such scheme, described alkali is sheet alkali or sheet alkali aqueous solution.
The special-purpose pumping agent of high-rise building concrete of the present invention can be applied in super high-rise pumping concrete, and its volume as admixture is 1.0-1.8%.It is standard at 30-60% that this volume scope be take solid content, and concrete consumption can be according to the corresponding adjustment of actual solid content.
Compared with prior art, the invention has the beneficial effects as follows:
Special-purpose pumping agent of high-rise building concrete of the present invention and preparation method thereof, take containing two key unsaturated polyester ether monomers is main raw material, add unsaturated carboxylic acid and derivatives monomer thereof and unsaturated carboxylic acid and derivatives monomer thereof, for the molecular structure at high molecular polymer, introduce and there is adsorbing carboxyl, in concrete alkalescence Water Under solution, discharge the ester group and the side chain with water retention of carboxyl.The special-purpose pumping agent of high-rise building concrete of the present invention does not need to carry out compositely with other auxiliary agent (as retardant, water-holding agent, air entrapment agent etc.), forms simple.The special-purpose pumping agent of high-rise building concrete of the present invention has diminishing to protect the effect of collapsing to concrete, and reduces concrete initial viscosity, and the Qinshui phenomenon while avoiding Super High concrete pumping is applicable to 100 meters of above concrete smooth pumpings of high-rise building.
Embodiment
In order to understand better the present invention, below in conjunction with embodiment, further illustrate content of the present invention, but the present invention is not only confined to the following examples.
Embodiment 1
The special-purpose pumping agent of high-rise building concrete, is prepared from aqueous solvent by following raw material, and the consumption of each raw material is as follows:
The preparation method of the special-purpose pumping agent of above-mentioned high-rise building concrete, comprises the steps:
1), with said ratio, take each raw material for standby;
2) carboxylic acid A, methyl acrylate, mercaptoethanol are jointly dissolved in 80g water and are made into water solution A, ammonium persulphate is dissolved in and in 80g water, is made into aqueous solution B;
3) under nitrogen protection, in the 500ml four-hole boiling flask of thermometer, agitator and dropping funnel is housed, add successively 100g deionized water, polyethers A and starch acrylamide acid esters, heating in water bath stirs, and temperature is controlled at 40 ℃ of left and right; After polyethers A and starch acrylamide acid esters fully dissolve, the temperature to 60 ℃ that slowly raises then starts to drip water solution A and aqueous solution B simultaneously, and time for adding is controlled at 1h; Dropwise latter 60 ℃ and continue insulation 1h, then be cooled to 40 ℃, add the neutralization of sheet alkaline solution and the deionized water of 32wt%, regulate its pH to 6, make solid content and be about 40% the thick multipolymer of micro-yellow, obtain the special-purpose pumping agent of described high-rise building concrete.
Concrete reaction equation is as follows:
Embodiment 2
The special-purpose pumping agent of high-rise building concrete, is prepared from aqueous solvent by following raw material, and the consumption of each raw material is as follows:
The preparation method of the special-purpose pumping agent of above-mentioned high-rise building concrete, comprises the steps:
1), with said ratio, take each raw material for standby;
2) carboxylic acid sodium B, ethyl propenoate, 2-hydroxyl propylmercaptan are jointly dissolved in 80g water and are made into water solution A, ammonium persulphate is dissolved in and in 80g water, is made into aqueous solution B;
3) under nitrogen protection, in the 500ml four-hole boiling flask of thermometer, agitator and dropping funnel is housed, add successively 100g deionized water, polyethers B and starch acrylamide acid esters, heating in water bath stirs, and temperature is controlled at 40 ℃ of left and right; After polyethers B and starch acrylamide acid esters fully dissolve, the temperature to 80 ℃ that slowly raises then starts to drip water solution A and aqueous solution B simultaneously, and time for adding is controlled at 3h; Dropwise latter 80 ℃ and continue insulation 3.5h, be then cooled to 40 ℃, add the neutralization of sheet alkali and deionized water, regulate its pH to 7, make solid content and be about 40% the thick multipolymer of micro-yellow, obtain the special-purpose pumping agent of described high-rise building concrete.
Embodiment 3
The special-purpose pumping agent of high-rise building concrete, is prepared from aqueous solvent by following raw material, and the consumption of each raw material is as follows:
The preparation method of the special-purpose pumping agent of above-mentioned high-rise building concrete, comprises the steps:
1), with said ratio, take each raw material for standby;
2) calcium carboxylates C, isobutyl acrylate and Thiovanic acid are jointly dissolved in 80g water and are made into water solution A; Described Potassium Persulphate is dissolved in and in 80g water, is made into aqueous solution B;
3) under nitrogen protection, in the 500ml four-hole boiling flask of thermometer, agitator and dropping funnel is housed, add successively 100g deionized water, polyethers C and acrylamide monomer, heating in water bath stirs, and temperature is controlled at 40 ℃ of left and right; After polyethers C and acrylamide monomer fully dissolve, the temperature to 80 ℃ that slowly raises, then starts to drip water solution A and aqueous solution B, and time for adding is controlled at 3h; Dropwise latter 80 ℃ and continue insulation 3.5h, be then cooled to 40 ℃, add the neutralization of sheet alkali and deionized water, regulate its pH to 7, make solid content and be about 40% the thick multipolymer of micro-yellow, obtain the special-purpose pumping agent of described high-rise building concrete.
Embodiment 4
The special-purpose pumping agent of high-rise building concrete, is prepared from aqueous solvent by following raw material, and the consumption of each raw material is as follows:
The preparation method of the special-purpose pumping agent of above-mentioned high-rise building concrete, comprises the steps:
1), with said ratio, take each raw material for standby;
2) magnesium carboxylates D, Hydroxyethyl acrylate and 2 mercaptopropionic acid are jointly dissolved in 80g water and are made into water solution A; Described Diisopropyl azodicarboxylate is dissolved in and in 80g water, is made into aqueous solution B;
3) under nitrogen protection, in the 500ml four-hole boiling flask of thermometer, agitator and dropping funnel is housed, add successively 100g deionized water, polyethers D and acrylamide monomer, heating in water bath stirs, and temperature is controlled at 40 ℃ of left and right; After polyethers D and acrylamide monomer fully dissolve, the temperature to 80 ℃ that slowly raises then starts to drip water solution A and aqueous solution B simultaneously, and time for adding is controlled at 3h; Dropwise latter 80 ℃ and continue insulation 3.5h, be then cooled to 40 ℃, add the neutralization of sheet alkali and deionized water, regulate its pH to 7, make solid content and be 40% the thick multipolymer of micro-yellow, obtain the special-purpose pumping agent of described high-rise building concrete.
Embodiment 5
The special-purpose pumping agent of high-rise building concrete, is prepared from aqueous solvent by following raw material, and the consumption of each raw material is as follows:
The preparation method of the special-purpose pumping agent of above-mentioned high-rise building concrete, comprises the steps:
1), with said ratio, take each raw material for standby;
2) described carboxylic acid potassium E, Propylene glycol monoacrylate and 3-thiohydracrylic acid are jointly dissolved in 80g water and are made into water solution A; Described Diisopropyl azodicarboxylate and ammonium persulphate are dissolved in and in 80g water, are made into aqueous solution B;
3) under nitrogen protection, in the 500ml four-hole boiling flask of thermometer, agitator and dropping funnel is housed, add successively 100g deionized water, polyethers E and acrylamide monomer, heating in water bath stirs, and temperature is controlled at 40 ℃ of left and right; After polyethers E and acrylamide monomer fully dissolve, the temperature to 80 ℃ that slowly raises starts to drip water solution A and aqueous solution B simultaneously, and time for adding is controlled at 3h; Dropwise latter 80 ℃ and continue insulation 3.5h, be then cooled to 40 ℃, add the neutralization of sheet alkali and deionized water, regulate products obtained therefrom pH to 7, make solid content and be 40% the thick multipolymer of micro-yellow, obtain the special-purpose pumping agent of described high-rise building concrete.
Embodiment 6
The special-purpose pumping agent of high-rise building concrete, is prepared from aqueous solvent by following raw material, and the consumption of each raw material is as follows:
The preparation method of the special-purpose pumping agent of above-mentioned high-rise building concrete, comprises the steps:
1), with said ratio, take each raw material for standby;
2) described carboxylic acid potassium F, methyl methacrylate and 2-dimercaptosuccinic acid are jointly dissolved in 80g water and are made into water solution A; Described Diisopropyl azodicarboxylate and ammonium persulphate are dissolved in and in 80g water, are made into aqueous solution B;
3) under nitrogen protection, in the 500ml four-hole boiling flask of thermometer, agitator and dropping funnel is housed, add successively 100g deionized water, polyethers F and acrylamide monomer, heating in water bath stirs, and temperature is controlled at 40 ℃ of left and right; After polyethers F and acrylamide monomer fully dissolve, the temperature to 80 ℃ that slowly raises then starts to drip water solution A and aqueous solution B simultaneously, and time for adding is controlled at 3h; Dropwise latter 80 ℃ and continue insulation 3.5h, be then cooled to 40 ℃, add the neutralization of sheet alkali and deionized water, regulate products obtained therefrom pH to 7, make solid content and be 40% the thick multipolymer of micro-yellow, obtain the special-purpose pumping agent of described high-rise building concrete.
Embodiment 7
The special-purpose pumping agent of high-rise building concrete, is prepared from aqueous solvent by following raw material, and the consumption of each raw material is as follows:
The preparation method of the special-purpose pumping agent of above-mentioned high-rise building concrete, comprises the steps:
1), with said ratio, take each raw material for standby;
2) described carboxylic acid potassium G, methyl methacrylate, 2-dimercaptosuccinic acid and Thiovanic acid are jointly dissolved in 80g water and are made into water solution A; Described Diisopropyl azodicarboxylate and ammonium persulphate are dissolved in and in 80g water, are made into aqueous solution B;
3) under nitrogen protection, in the 500ml four-hole boiling flask of thermometer, agitator and dropping funnel is housed, add successively 100g deionized water, polyethers G and acrylamide monomer, heating in water bath stirs, and temperature is controlled at 40 ℃ of left and right; After polyethers G and acrylamide monomer fully dissolve, the temperature to 80 ℃ that slowly raises then starts to drip water solution A and aqueous solution B simultaneously, and time for adding is controlled at 3h; Dropwise latter 80 ℃ and continue insulation 3.5h, be cooled to 40 ℃, add the neutralization of sheet alkali and deionized water, regulate products obtained therefrom pH to 7, make solid content and be 40% the thick multipolymer of micro-yellow, obtain the special-purpose pumping agent of described high-rise building concrete.
Embodiment 8
The special-purpose pumping agent of high-rise building concrete, is prepared from aqueous solvent by following raw material, and the consumption of each raw material is as follows:
The preparation method of the special-purpose pumping agent of above-mentioned high-rise building concrete, comprises the steps:
1), with said ratio, take each raw material for standby;
2) described calcium carboxylates H, β-dimethyl-aminoethylmethacrylate, Thiovanic acid are jointly dissolved in 80g water and are made into water solution A; Described Potassium Persulphate is dissolved in and in 80g water, is made into aqueous solution B;
3) under nitrogen protection, in the 500ml four-hole boiling flask of thermometer, agitator and dropping funnel is housed, add successively 100g deionized water, polyethers H and acrylamide monomer, heating in water bath stirs, and temperature is controlled at 40 ℃ of left and right; After polyethers H and acrylamide monomer fully dissolve, the temperature to 80 ℃ that slowly raises then starts to drip water solution A and aqueous solution B simultaneously, and time for adding is controlled at 3h; Dropwise latter 80 ℃ and continue insulation 3.5h, be then cooled to 40 ℃, add the neutralization of sheet alkali and deionized water, regulate products obtained therefrom pH to 7, make solid content and be 40% the thick multipolymer of micro-yellow, obtain the special-purpose pumping agent of described high-rise building concrete.
Embodiment 9
The special-purpose pumping agent of high-rise building concrete, is prepared from aqueous solvent by following raw material, and the consumption of each raw material is as follows:
The preparation method of the special-purpose pumping agent of above-mentioned high-rise building concrete, comprises the steps:
1), with said ratio, take each raw material for standby;
2) described calcium carboxylates I, β-dimethyl-aminoethylmethacrylate, Thiovanic acid are jointly dissolved in 80g water and are made into water solution A; Described Potassium Persulphate is dissolved in and in 80g water, is made into aqueous solution B;
3) under nitrogen protection, in the 500ml four-hole boiling flask of thermometer, agitator and dropping funnel is housed, add successively 100g deionized water, polyethers I and acrylamide monomer, heating in water bath stirs, and temperature is controlled at 40 ℃ of left and right; After polyethers I and acrylamide monomer fully dissolve, the temperature to 80 ℃ that slowly raises then starts to drip water solution A and aqueous solution B simultaneously, and time for adding is controlled at 3h; Dropwise latter 80 ℃ and continue insulation 3.5h, be then cooled to 40 ℃, add the neutralization of sheet alkali and deionized water, regulate product pH to 7, make solid content and be 40% the thick multipolymer of micro-yellow, obtain the special-purpose pumping agent of described high-rise building concrete.
Application examples
The special-purpose pumping agent of concrete that the present embodiment 1-9 is provided is applied in the concrete preparation of C50 super high-rise pumping as admixture, and specific performance is tested in Table 2, and contrast sample is commercially available high water reducing type poly carboxylic acid product.
C50 super high-rise pumping concrete can obtain according to following concrete proportioning raw materials preparation, specifically in Table 1.
The concrete concrete proportioning raw materials of table 1 C50 super high-rise pumping
Note: the implication of admixture dosage is: admixture accounts for the per-cent of gelling material gross weight (cement, breeze, flyash and silicon ash gross weight) by weight.
Cement is the P.O42.5 ordinary Portland cement that Huangshi Huaxin Cement Factory produces; Breeze is that military new mineral powder plant is produced; Flyash is that sun is patrolled II level ash; Medium sand river, Sha Weiba river, river sand, fineness modulus is 2.6; Rubble is that particle diameter is the rubble of 5-20mm continuous grading.
Table 2
By concrete slump divergence and expansion time test, the test of U-shaped instrument and resistance to compression bleeding test-results, can find out, adopt the concrete of the special-purpose pumping agent preparation of 1-9 Super High to have compared with large fluidity, more than divergence reaches 700mm, and there is less viscosity and good fillibility, can pass through smoothly the U-shaped instrument of I type, and U-shaped instrument difference of altitude is 0mm, and adopt the concrete of contrast sample (commercially available high water reducing type poly carboxylic acid product) preparation to there is larger viscosity; Separately, the resistance to compression bleeding rate result recording by resistance to compression bleeding test method can be found out, the concrete resistance to compression bleeding rate that uses pumping agent of the present invention to make is all little (when resistance to compression bleeding rate is 1.0% than common commercially available water reducer, reduced approximately 71%), there is good anti-segregation bleeding, meet the requirement of Super High concrete antagonism segregation bleeding completely.Therefore, the synthetic special-purpose pumping agent of Super High of the present invention can meet engineering construction for the requirement of anti-segregation bleeding, super high-rise pumping.
The above is only the preferred embodiment of the present invention, it should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise of the invention, can also make some improvement and conversion, and these all belong to protection scope of the present invention.
Claims (9)
1. the special-purpose pumping agent of a high-rise building concrete, it is characterized in that it is prepared from by the raw material that comprises double bond containing polyether monomer, unsaturated carboxylic acid and derivatives monomer thereof, esters of unsaturated carboxylic acids and derivatives monomer thereof, the improved-type auxiliary agent of bleeding, chain-transfer agent, initiator, wherein double bond containing polyether monomer, unsaturated carboxylic acid and derivatives monomer thereof, esters of unsaturated carboxylic acids and derivatives monomer thereof, the improved-type auxiliary agent of bleeding form water reducer jointly; The add-on of described initiator is 0.2～0.5% of described water reducer gross weight, and the add-on of described chain-transfer agent is 0.05～0.2% of described water reducer gross weight.
2. the special-purpose pumping agent of a kind of high-rise building concrete according to claim 1, it is characterized in that described water reducer by weight percentage, its each component concentration is as follows: double bond containing polyether monomer 60～90%, unsaturated carboxylic acid and derivatives monomer 8～30% thereof, esters of unsaturated carboxylic acids and derivatives monomer 1～10% thereof, the improved-type auxiliary agent 1～10% of bleeding.
3. the special-purpose pumping agent of a kind of high-rise building concrete according to claim 1 and 2, is characterized in that the chemical structural formula of described double bond containing polyether monomer as shown in Equation 1:
In formula 1, R
1and R
2represent respectively a kind of in the alkyl of hydrogen atom or 1～3 carbon atom; X is a kind of in the alkyl of carbon atom, methylene radical or 1～10 carbon atom; R
3o is the alkoxyl group of 2～5 carbon atoms, the polymerization degree that a is this alkoxyl group, and its value is 9～100; R
4alkyl for hydrogen atom or 1～3 carbon atom; N is the polymerization degree, and its value is 9～100.
4. the special-purpose pumping agent of a kind of high-rise building concrete according to claim 1 and 2, is characterized in that the chemical structural formula of described unsaturated carboxylic acid and derivatives monomer thereof as shown in Equation 2:
In formula 2, R
5and R
6represent respectively a kind of in hydrogen atom, methyl or carboxyl and R
5and R
6can not be carboxyl simultaneously; R
7represent a kind of in hydrogen atom, methyl or carboxyl; M represents a kind of in hydrogen atom, monovalent metallic ion or divalent-metal ion; M is the polymerization degree, and its value is 9～100.
5. the special-purpose pumping agent of a kind of high-rise building concrete according to claim 1 and 2, is characterized in that described esters of unsaturated carboxylic acids and derivatives monomer thereof are one or more mixtures in any proportion in methyl acrylate, ethyl propenoate, isobutyl acrylate, Hydroxyethyl acrylate, Propylene glycol monoacrylate, methyl methacrylate, β-dimethyl-aminoethylmethacrylate, Propenoic acid, 2-methyl, isobutyl ester.
6. the special-purpose pumping agent of a kind of high-rise building concrete according to claim 1 and 2, is characterized in that the improved-type auxiliary agent of described bleeding is starch acrylamide acid esters a kind of of acrylamide monomer or molecular weight 1000～10000.
7. the special-purpose pumping agent of a kind of high-rise building concrete according to claim 1, is characterized in that described chain-transfer agent is one or more mixtures in any proportion in mercaptoethanol, 2-hydroxyl propylmercaptan, Thiovanic acid, 2 mercaptopropionic acid, 3-thiohydracrylic acid, 2-dimercaptosuccinic acid.
8. the special-purpose pumping agent of a kind of high-rise building concrete according to claim 1, is characterized in that described initiator is one or more mixtures in any proportion in ammonium persulphate, Potassium Persulphate, Diisopropyl azodicarboxylate.
9. the preparation method of the special-purpose pumping agent of the high-rise building concrete described in one of claim 1-8, is characterized in that comprising the steps:
1) with said ratio, take containing 1～10 part of two strong 60～90 parts of polyether monomers, unsaturated carboxylic acid and 8～30 parts of derivatives monomers thereof, esters of unsaturated carboxylic acids and 1～10 part of derivatives monomer thereof, the improved-type auxiliary agent in Qinshui, wherein double bond containing polyether monomer, unsaturated carboxylic acid and derivatives monomer thereof, esters of unsaturated carboxylic acids and derivatives monomer thereof, the improved-type auxiliary agent of bleeding form water reducer jointly, the amount that takes initiator is 0.2～0.5% of described water reducer gross weight, the amount that takes chain-transfer agent is 0.05～0.2% of described water reducer gross weight, standby;
2) unsaturated carboxylic acid and derivatives monomer, esters of unsaturated carboxylic acids and derivatives monomer thereof, chain-transfer agent are jointly dissolved in to water and are made into water solution A, initiator is dissolved in to water and is made into aqueous solution B;
3) under nitrogen atmosphere, double bond containing polyether monomer and the improved-type auxiliary agent of bleeding are added to the water, after being stirred to the improved-type auxiliary agent in double bond containing polyether monomer and Qinshui and dissolving completely, are warming up to 60～80 ℃, drip water solution A and aqueous solution B, time for adding controls to 1～4h simultaneously; Dropwise rear insulation reaction 1～3.5h, after reaction finishes, cooling adds alkali and water, and to be adjusted to pH be 6～7, obtains the special-purpose pumping agent of high-rise building concrete.
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| CN106220791A (en) * | 2016-07-10 | 2016-12-14 | 安徽中铁工程材料科技有限公司 | The polycarboxylate water-reducer of a kind of phosphorous acidic group and preparation method |
| CN107804992A (en) * | 2017-10-20 | 2018-03-16 | 桂林市春晓环保科技有限公司 | A kind of concrete pump-feed agent and preparation method thereof |
| CN107964071A (en) * | 2017-10-24 | 2018-04-27 | 清华大学 | Aqueous dispersion polymers and its application |
| CN107964070A (en) * | 2017-10-24 | 2018-04-27 | 清华大学 | Water-soluble polymer and its application |
| CN111471143A (en) * | 2020-06-05 | 2020-07-31 | 海南大学 | Preparation method of anti-mud sodium alginate side chain comb-shaped polycarboxylate superplasticizer |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070082979A1 (en) * | 2003-10-23 | 2007-04-12 | Emmanuel Villard | Use of comb-structured bead-form polymers, and resulting compositions |
| CN101538134A (en) * | 2009-04-14 | 2009-09-23 | 大连市建筑科学研究设计院股份有限公司 | Polyether class polycarboxylic acid high-efficiency water reducing agent and preparation method thereof |
| CN102503226A (en) * | 2011-10-19 | 2012-06-20 | 中建商品混凝土有限公司 | High slump retaining type polycarboxylic acid water reducing agent with sustained-release effect and preparation method thereof |
| CN102515618A (en) * | 2011-11-30 | 2012-06-27 | 上海大学 | Slow release slump retaining polycarboxylate water reducer and preparation thereof |
-
2014
- 2014-07-28 CN CN201410363698.3A patent/CN104098286B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070082979A1 (en) * | 2003-10-23 | 2007-04-12 | Emmanuel Villard | Use of comb-structured bead-form polymers, and resulting compositions |
| CN101538134A (en) * | 2009-04-14 | 2009-09-23 | 大连市建筑科学研究设计院股份有限公司 | Polyether class polycarboxylic acid high-efficiency water reducing agent and preparation method thereof |
| CN102503226A (en) * | 2011-10-19 | 2012-06-20 | 中建商品混凝土有限公司 | High slump retaining type polycarboxylic acid water reducing agent with sustained-release effect and preparation method thereof |
| CN102515618A (en) * | 2011-11-30 | 2012-06-27 | 上海大学 | Slow release slump retaining polycarboxylate water reducer and preparation thereof |
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| CN105801772A (en) * | 2016-03-03 | 2016-07-27 | 合肥元旭环保新型材料有限公司 | Pumping agent for tubular pile and preparation method thereof |
| CN105924030A (en) * | 2016-04-29 | 2016-09-07 | 华侨大学 | Ester polycarboxylate concrete additive containing chitosan, and preparation method thereof |
| CN105924030B (en) * | 2016-04-29 | 2018-07-20 | 华侨大学 | Esters polycarboxylic acid concrete additive of chitosan-containing and preparation method thereof |
| CN106084146A (en) * | 2016-06-04 | 2016-11-09 | 石家庄市长安育才建材有限公司 | A kind of reduce concrete additive crossing pumping loss and preparation method thereof |
| CN106084146B (en) * | 2016-06-04 | 2020-08-28 | 石家庄市长安育才建材有限公司 | Additive for reducing concrete pumping loss and preparation method thereof |
| CN106146749A (en) * | 2016-06-27 | 2016-11-23 | 中建商品混凝土西安有限公司 | Meet polycarboxylate water-reducer of 620 meters of super high pump-conveying self-compacting concretes requirements and preparation method thereof |
| CN106220791A (en) * | 2016-07-10 | 2016-12-14 | 安徽中铁工程材料科技有限公司 | The polycarboxylate water-reducer of a kind of phosphorous acidic group and preparation method |
| CN107804992A (en) * | 2017-10-20 | 2018-03-16 | 桂林市春晓环保科技有限公司 | A kind of concrete pump-feed agent and preparation method thereof |
| CN107964071A (en) * | 2017-10-24 | 2018-04-27 | 清华大学 | Aqueous dispersion polymers and its application |
| CN107964070A (en) * | 2017-10-24 | 2018-04-27 | 清华大学 | Water-soluble polymer and its application |
| CN111471143A (en) * | 2020-06-05 | 2020-07-31 | 海南大学 | Preparation method of anti-mud sodium alginate side chain comb-shaped polycarboxylate superplasticizer |
| CN111471143B (en) * | 2020-06-05 | 2021-06-15 | 海南大学 | Preparation method of anti-mud sodium alginate side chain comb-shaped polycarboxylate superplasticizer |
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