CN102775090A - Polycarboxylic acid pumping aid and application thereof - Google Patents
Polycarboxylic acid pumping aid and application thereof Download PDFInfo
- Publication number
- CN102775090A CN102775090A CN2012103000076A CN201210300007A CN102775090A CN 102775090 A CN102775090 A CN 102775090A CN 2012103000076 A CN2012103000076 A CN 2012103000076A CN 201210300007 A CN201210300007 A CN 201210300007A CN 102775090 A CN102775090 A CN 102775090A
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- Prior art keywords
- polycarboxylic acid
- acid series
- concrete
- pumping agent
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- 238000005086 pumping Methods 0.000 title claims abstract description 40
- 239000002253 acid Substances 0.000 title claims abstract description 36
- 239000004567 concrete Substances 0.000 claims abstract description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 22
- 239000002994 raw material Substances 0.000 claims abstract description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 36
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims description 13
- 239000001509 sodium citrate Substances 0.000 claims description 11
- HRXKRNGNAMMEHJ-UHFFFAOYSA-K trisodium citrate Chemical compound [Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O HRXKRNGNAMMEHJ-UHFFFAOYSA-K 0.000 claims description 11
- 229940038773 trisodium citrate Drugs 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 7
- 150000002170 ethers Chemical group 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- 230000008901 benefit Effects 0.000 abstract description 6
- 229920005552 sodium lignosulfonate Polymers 0.000 abstract description 6
- 239000004566 building material Substances 0.000 abstract description 2
- 230000014759 maintenance of location Effects 0.000 abstract 1
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000004568 cement Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000000979 retarding effect Effects 0.000 description 3
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- 230000000740 bleeding effect Effects 0.000 description 2
- 230000003467 diminishing effect Effects 0.000 description 2
- 239000012452 mother liquor Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 208000034189 Sclerosis Diseases 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- DGVVJWXRCWCCOD-UHFFFAOYSA-N naphthalene;hydrate Chemical compound O.C1=CC=CC2=CC=CC=C21 DGVVJWXRCWCCOD-UHFFFAOYSA-N 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000003469 silicate cement Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to the field of building materials, in particular to a polycarboxylic acid pumping aid and application thereof. The invention provides a polycarboxylic acid pumping aid which is prepared from the following raw materials in parts by weight: 325 parts of polycarboxylic acid water reducing agent, 31-50 parts of retarder, 8-12 parts of sodium lignosulfonate and 750 parts of water 675. The polycarboxylic acid pumping aid obtained by the invention has the advantages of low mixing amount, high water reducing rate (the water reducing rate reaches more than 30%), good collapse retention (the slump loss after 1 hour is less than 15mm), and great contribution to concrete strength (the compressive strength is improved by more than 85% in 7 days and is improved by more than 70% in 28 days).
Description
Technical field
The present invention relates to building material field, be specifically related to a kind of polycarboxylic acid series high-performance pumping agent.
Background technology
Concrete pump-feed agent is a kind of admixture when being used for concrete mixing, construction, can increase concrete workability, makes concrete have good flowability and pumpability.At present; Most of pumping agent is taked method of double crossing production; Promptly with several kinds of water reducers having used in routine at present and have the admixture that helps pumping function and mix according to a certain percentage and obtain, the water reducer that adopts mostly mainly is water reducers such as naphthalene system, amino system and fatty family.Yet naphthalene water reducer exists that concrete slump is big through time loss, viscosity is too high, with shortcomings such as cement adaptability are bad; The molecular weight of thionamic acid based water reducer hour causes the cement slurry bleeding very much easily, and concrete slump loss is very fast, but molecular weight is when too big, and its diminishing dispersiveness is affected again; The aliphatics based water reducer is a brown liquid, make concrete, the mortar easy colorizing of the system of mixing, the concrete that uses it to mix system separately also exist the slump through the time shortcomings such as loss is fast.
Poly carboxylic acid series water reducer is the third generation water reducer of excellent combination property, just begins in developed country's production applications such as Japan, Germany, the U.S. from late 1980s.It has water-reducing rate height, concrete slump through the time loss little, volume is low,, advantage such as the feature of environmental protection good big to the concrete strength contribution; Demonstrate extraordinary application prospect, its synthetic and compounded technology has become the focus of domestic and international concrete admixture research and development.At present, poly carboxylic acid series water reducer is also not long in the time that China occurs, and it is synthetic and compounded technology is in urgent need to be improved.Applicant of the present invention is devoted for years in the research of poly carboxylic acid series water reducer compounding coagulation soil with pumping agent.
Summary of the invention
The present invention provides that a kind of volume is low, water-reducing rate is high (water-reducing rate reaches more than 30%), protect collapsing property good (1 hour slump through time loss less than 15mm), to the polycarboxylic acid series pumping agent of concrete strength contribution big (ultimate compression strength improved more than 85% in 7 days, and ultimate compression strength improved more than 70% in 28 days).
Technical scheme of the present invention is:
A kind of polycarboxylic acid series pumping agent, form by the raw material of following weight part:
Preferably, said poly carboxylic acid series water reducer is an ethers polycarboxylic acid water reducing agent.
Preferably, the solid content of said poly carboxylic acid series water reducer is 40%.
Preferably, said retardant is at least a in Sunmorl N 60S or the Trisodium Citrate.
Preferably, the purity of said Sunmorl N 60S is more than the 98wt%.
Preferably, the purity of said Trisodium Citrate is more than the 99wt%.
Preferably, the polycarboxylic acid series pumping agent, form by the raw material of following weight part:
The application of polycarboxylic acid series pumping agent in the C15-C60 concrete.
The addition content of polycarboxylic acid series pumping agent is the 1-1.7wt% of gelling material in the concrete.
Beneficial effect of the present invention:
Gained pumping agent of the present invention is a liquid, is applicable to various silicate cements; It has that volume is low, water-reducing rate is high (water-reducing rate reaches more than 30%), protect collapsing property good (1 hour slump through time loss less than 15mm), to the advantage of concrete strength contribution big (ultimate compression strength improved more than 85% in 7 days, and ultimate compression strength improved more than 70% in 28 days).
The subsidiary material kind such as slow setting, bleed that the invention has the advantages that use is less, and various group partition inter-capacitives are better, and the existence of insolubles, swimmer and pungent odour has been avoided in agent as liquid pumping; Phenomenons such as layering, deposition, severe corrosive do not appear yet; And possess good water-reducing rate, protect collapsing property, lower pressure bleeding, certain bleed performance; Can reduce the heat-transmission of cement early water, its excellent combination property is worth promoting on a large scale.
Application of the present invention will reduce merchant's concrete production cost significantly, and be more convenient for discussing in the concrete production process its controllable quality, will be enterprise's cost efficiency, promote industrial competition and play strong pushing effect.The present invention also will help poly carboxylic acid series water reducer the applying of this area, and have bigger economic benefit and social benefit.
Embodiment
The present invention provides a kind of polycarboxylic acid series pumping agent, is made up of the raw material of following weight part:
Preferably, said poly carboxylic acid series water reducer is an ethers polycarboxylic acid water reducing agent.
Preferably, the solid content of said poly carboxylic acid series water reducer is 40%.
Preferably, said retardant is at least a in Sunmorl N 60S or the Trisodium Citrate.
Preferably, the purity of said Sunmorl N 60S is more than the 98wt%; If the purity of Sunmorl N 60S is lower than 98wt%, because foreign matter content raises, the active principle reduction can cause the concrete retarding poor effect, and not enough to the concrete strength contribution.
Preferably, the purity of said Trisodium Citrate is more than the 99wt%; If the purity of Trisodium Citrate is lower than 99wt%, because foreign matter content raises, the active principle reduction can cause the concrete retarding poor effect.
Preferably, the polycarboxylic acid series pumping agent, form by the raw material of following weight part:
Sunmorl N 60S, Trisodium Citrate all play retarding effect among the present invention, and sodium lignosulfonate (wooden sodium) has had diminishing, slow setting, three kinds of effects of bleed concurrently.In addition, the consumption of Sunmorl N 60S, Trisodium Citrate, sodium lignosulfonate can be adjusted according to concrete environment for use temperature among the present invention, and its consumption raises and can suitably increase with daily mean temperature.
The present invention also provides the preparation method of above-mentioned polycarboxylic acid series pumping agent, is specially: poly carboxylic acid series water reducer is mixed according to said ratio with water, add retardant, sodium lignosulfonate again, the material mixing is promptly got polycarboxylic acid series pumping agent of the present invention.
The application of polycarboxylic acid series pumping agent in the C15-C60 concrete.
According to GB50010-2010 " Code for design of concrete structures " regulation, normal concrete is divided into 14 grades, that is: C15, C20, C25, C30, C35, C40, C45, C50, C55, C60, C65, C70, C75, C80.For example, strength grade is that the concrete of C30 is meant 30MPa≤fcu, k < 35MPa.The C15-C60 here comprises C15, C20, C25, C30, C35, C40, C45, C50, C55, the concrete of these ten strength marks of C60.
The application of polycarboxylic acid series pumping agent in the C15-C60 concrete, its addition content are the 1-1.7wt% of gelling material in the concrete.
In order to understand the present invention better, further specify the present invention below in conjunction with embodiment.
Embodiment 1
Get LonS-Mw water reducing type poly carboxylic acid mother liquor (ethers; 40% solid content) 3.25kg; After water 6.75kg mixes; Add Sunmorl N 60S (content 98.5%) 0.3kg, Trisodium Citrate (content 99%) 0.07kg, sodium lignosulfonate 0.12kg successively, stir, promptly get the polycarboxylic acid series high-performance pumping agent.It is the 1%-1.2wt% of gel material content in the concrete that the gained pumping agent is recommended volume.
Embodiment 2
Get LonS-Mw water reducing type poly carboxylic acid mother liquor (ethers; 40% solid content) 2.50kg; After water 7.50kg mixes; Add Sunmorl N 60S (content 98.5%) 0.35kg, Trisodium Citrate (content 99%) 0.06kg, sodium lignosulfonate 0.08kg successively, stir, promptly get the polycarboxylic acid series high-performance pumping agent.It is the 1.5%-1.7wt% of gel material content in the concrete that the gained pumping agent is recommended volume.
The concrete workability of gained polycarboxylic acid series pumping agent of the present invention is good, water-reducing rate high (water-reducing rate reaches more than 30%), 1 hour slump through the time loss less than 15mm; The contrast normal concrete, the concrete of interpolation pumping agent of the present invention all has lifting in various degree in each intensity of coagulating the phase; Concrete after the sclerosis is excellent in aspect performances such as outward appearance, Crack Control, impervious, endurance qualities.In addition, used storage, the transportation equipment of polycarboxylic acid series high-performance pumping agent of the present invention need not often be cleared up, and cleaning frequency can be dropped to annual 1 time for 6 times by every year of routine, had alleviated the pollution to environment greatly; The volume that pumping agent of the present invention is lower in concrete strength contribution big (ultimate compression strength improved more than 85% in 7 days, and ultimate compression strength improved more than 70% in 28 days), to enterprise's cost efficiency, promotes industrial competition and has played strong pushing effect.
Claims (9)
1. polycarboxylic acid series pumping agent, form by the raw material of following weight part:
2. polycarboxylic acid series pumping agent according to claim 1 is characterized in that, said poly carboxylic acid series water reducer is an ethers polycarboxylic acid water reducing agent.
3. polycarboxylic acid series pumping agent according to claim 1 and 2 is characterized in that, the solid content of said poly carboxylic acid series water reducer is 40%.
4. polycarboxylic acid series pumping agent according to claim 1 and 2 is characterized in that, said retardant is at least a in Sunmorl N 60S or the Trisodium Citrate.
5. polycarboxylic acid series pumping agent according to claim 4 is characterized in that, the purity of said Sunmorl N 60S is more than the 98wt%.
6. polycarboxylic acid series pumping agent according to claim 4 is characterized in that, the purity of said Trisodium Citrate is more than the 99wt%.
7. polycarboxylic acid series pumping agent according to claim 4 is characterized in that, said polycarboxylic acid series pumping agent is made up of the raw material of following weight part:
8. each described polycarboxylic acid series pumping agent application in the C15-C60 concrete of claim 1-7.
9. the application of polycarboxylic acid series pumping agent according to claim 8 in the C15-C60 concrete is characterized in that its addition content is the 1-1.7wt% of gelling material in the concrete.
Priority Applications (1)
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CN2012103000076A CN102775090A (en) | 2012-08-22 | 2012-08-22 | Polycarboxylic acid pumping aid and application thereof |
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CN2012103000076A CN102775090A (en) | 2012-08-22 | 2012-08-22 | Polycarboxylic acid pumping aid and application thereof |
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CN2012103000076A Pending CN102775090A (en) | 2012-08-22 | 2012-08-22 | Polycarboxylic acid pumping aid and application thereof |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103214210A (en) * | 2013-05-14 | 2013-07-24 | 十九冶成都建设有限公司 | Secondary concrete fluidizing agent |
CN106116231A (en) * | 2016-06-24 | 2016-11-16 | 桂林华越环保科技有限公司 | A kind of compound concrete high efficiency water reducing agent |
CN117342820A (en) * | 2023-09-28 | 2024-01-05 | 深圳市名轩建材科技有限公司 | Composite polycarboxylate superplasticizer and preparation method thereof |
Citations (2)
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CN101215116A (en) * | 2007-12-27 | 2008-07-09 | 同济大学 | Retardation setting type polycarboxylic acids series water reducing agent |
CN102351480A (en) * | 2011-06-20 | 2012-02-15 | 北京科技大学 | High performance slip casting material for sealing freezing holes in mines and preparation method thereof |
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2012
- 2012-08-22 CN CN2012103000076A patent/CN102775090A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101215116A (en) * | 2007-12-27 | 2008-07-09 | 同济大学 | Retardation setting type polycarboxylic acids series water reducing agent |
CN102351480A (en) * | 2011-06-20 | 2012-02-15 | 北京科技大学 | High performance slip casting material for sealing freezing holes in mines and preparation method thereof |
Non-Patent Citations (2)
Title |
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《混凝土世界》 20120131 杨柳等 聚羧酸系高性能减水剂与木质磺酸钠复配缓凝型高性能减水剂及泵送剂的研究 第60-62页 , 第1期 * |
杨柳等: "聚羧酸系高性能减水剂与木质磺酸钠复配缓凝型高性能减水剂及泵送剂的研究", 《混凝土世界》 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103214210A (en) * | 2013-05-14 | 2013-07-24 | 十九冶成都建设有限公司 | Secondary concrete fluidizing agent |
CN106116231A (en) * | 2016-06-24 | 2016-11-16 | 桂林华越环保科技有限公司 | A kind of compound concrete high efficiency water reducing agent |
CN117342820A (en) * | 2023-09-28 | 2024-01-05 | 深圳市名轩建材科技有限公司 | Composite polycarboxylate superplasticizer and preparation method thereof |
CN117342820B (en) * | 2023-09-28 | 2024-06-11 | 深圳市名轩建材科技有限公司 | Composite polycarboxylate superplasticizer and preparation method thereof |
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Application publication date: 20121114 |