CN1285534C - High performance concrete pumping agent controlling falling degree loss type - Google Patents
High performance concrete pumping agent controlling falling degree loss type Download PDFInfo
- Publication number
- CN1285534C CN1285534C CN 200410016574 CN200410016574A CN1285534C CN 1285534 C CN1285534 C CN 1285534C CN 200410016574 CN200410016574 CN 200410016574 CN 200410016574 A CN200410016574 A CN 200410016574A CN 1285534 C CN1285534 C CN 1285534C
- Authority
- CN
- China
- Prior art keywords
- concrete
- pumping agent
- water
- slump
- concrete pumping
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention belongs to the technical field of building materials, more specifically a high-performance concrete pumping agent in a slump constant loss control type. The high-performance concrete pumping agent is prepared from a naphthalenesulfonic acid formaldehyde condensation product water-reducing agent, polyvinyl alcohol, sodium dodecyl sulfate, alkyl sodium sulfate, citric acid, sodium gluconate and water. The concrete pumping agent can greatly improve the concrete mobility, so the concrete slump constant can not be lost in 2 to 4 hours basically, and the concrete pumping agent has the advantages of water bleeding reduction, intensity increase and concrete durability improvement. The concrete pumping agent is suitable for structural articles or construction articles of commercial premixed concrete, mass concrete, reinforced concrete, light aggregate concrete, bridge beams, construction, water engineering, roadways, etc.
Description
Technical field
The invention belongs to building material technical field, be specifically related to a kind of control slump-loss type high performance concrete pumping agent.
Background technology
Commodity ready mixed concrete is owing to adopt specialized production technology and concentrate stirring supply technology; not only accelerate concrete construction speed; and improved the ratio of mixing of admixture and various active mineral admixtures in the concrete greatly; effectively utilized solid slag; saved cement consumption; this realizes that to saving the energy, economize on resources and protect environment solid foundation has been laid in the Sustainable development of this large material of construction of concrete.
The pumping technology cast is all adopted in ready mixed concrete at the construction field (site), require concrete must have good mobility and pumpability, in addition, because stirring station has with a certain distance from the construction site, commodity ready mixed concrete is transported to the construction site from stirring station generally will experience for some time, it is far away even when the situation of traffic jam takes place to run into road, then Jing Li time is longer, this just needs commodity ready mixed concrete that good flowability and pump-conveying property should be arranged, and has slump retentivity preferably again.Therefore, at present on the commerical ready-mixed concrete market, the problem of being concerned about is most being improved concrete flowability, reducing concrete slump loss and is being improved the effect of aspects such as concrete strength no more than concrete pump-feed agent.
Although the concrete water consumption of admixture naphthalene sulfonic acidformaldehyde condensation product high efficiency water reducing agent preparation can reduce greatly, the concrete initial flow is good, but concrete slump loss is more faster than normal concrete (do not mix the high efficiency water reducing agent person), be unsuitable for the preparation and the longer distance transportation of commerical ready-mixed concrete, all the more so under the summer high temperature.
Although the pumping agent of preparing by compound other component in the naphthalene sulfonic acidformaldehyde condensation product high efficiency water reducing agent is also arranged on the market, but relevant pumping agent standard is still loose to the regulation of slump retention value, although the investigator and the producer are just energetically for reducing the concrete slump loss effort, but do not find as yet that at present can control concrete slump did not lose substantially, all had better adaptive pumping agent with various cement and adulterant again in 2-3 hour.Under high temperature (greater than 35 ℃) situation, adopt the concrete of the existing pumping agent product preparation in market, its slump-loss is faster, even the slump will be reduced to below the 10cm in 30-60 minute, and successfully discharging has been constructed.
According to investigations and textual criticism, existing pumping agent product is essentially compound a certain amount of wooden calcium on naphthalene sulfonic acidformaldehyde condensation product high efficiency water reducing agent basis or/and sugared calcium on the market, and by the delayed coagulation of wooden calcium and/or sugared calcium, concrete slump loss slows down.In fact, wood composite calcium/sugared calcium is unsatisfactory to the effect of control concrete slump loss, also unstable, also promptly: sometimes certain effect can be arranged, and meet the cement that contains anhydrite or industry byproduct gypsum on occasion, and then not only can not control concrete slump loss, can make the concrete slump loss aggravation on the contrary, even condense in the short period of time, cause serious engineering accident.
Summary of the invention
The object of the present invention is to provide and a kind ofly can reduce concrete slump loss significantly, improve concrete construction, increase substantially the control slump-loss type high performance concrete pumping agent of concrete crushing strength and weather resistance.
The control slump-loss type high performance concrete pumping agent that the present invention proposes, by the sulfonic formaldehyde condensation compound water reducer, polyvinyl alcohol, 12 sodium alkyl sulfates, citric acid, Sunmorl N 60S and water are formed, and the weight ratio of each component is:
Naphthalene sulfonic acidformaldehyde condensation product water reducer 100
Polyvinyl alcohol 0.1-0.6
12 sodium alkyl sulfate 0.2-6.8
Citric acid 10-30
Sunmorl N 60S 2-30
Water 120-500.
The preferable weight ratio of each component is:
Naphthalene sulfonic acidformaldehyde condensation product water reducer 100
Polyvinyl alcohol 0.1-0.4
12 sodium alkyl sulfate 1-4
Citric acid 10-25
Sunmorl N 60S 2-20
Water 140-200.
Preparation method of the present invention is: by aforementioned each part by weight weighing each component, earlier water is added in the mixing machine, again naphthalene sulfonic acidformaldehyde condensation product water reducer, polyvinyl alcohol, 12 sodium alkyl sulfates, citric acid and Sunmorl N 60S are added in the mixing machine successively and stir, dissolve 2-6 hour, promptly get desired product.
Among the present invention, the naphthalene sulfonic acidformaldehyde condensation product high efficiency water reducing agent is main plasticizing diminishing component, it is a kind of aniorfic surfactant, after adding in the cement slurry, can be adsorbed on cement particle surface, the formation hydrophobic group is inside, one deck adsorption layer that hydrophilic group is outside, because the electronegative nuclear of hydrophilic group, be equivalent to the identical electric charge of each cement particle surface band in the slurry,, make to be floccular paste structure disintegration originally because same sex electric charge repels mutually, discharge the free water of wrapping up in the flucculation structure, thereby increase considerably the flowability of slurry.Polyvinyl alcohol is a kind of polymer substance, also has certain surfactivity, after adding in the cement slurry, can cement granules and aggregate particle be coupled together by the bridging effect, and slurry produced certain thickening power, avoid coagulation local products dirt non-uniform settling and excreting water phenomenon, the existence of polyvinyl alcohol also has certain effect to reducing concrete slump loss, but the ratio that polyvinyl alcohol adds can not be too big.12 sodium alkyl sulfates are as bleed and diminishing component, can make concrete in whipping process, introduce the gas that diameter is 20-500 μ m, the 1.0%-3.0% of gas comprises concrete cumulative volume, and concrete water consumption can reduce 3%-5%, and the introducing of gas helps to improve the concrete slump-loss of concrete flowability, homogeneity and reduction.Citric acid is a kind of cement setting retarder preferably, and good to cement adaptability, and citric acid is mixed in the concrete, can also reduce concrete slump loss significantly.The effect of Sunmorl N 60S is to improve on the one hand the adaptability of water reducer and cement, on the other hand as the inhibitor of concrete slump loss, concrete slump is not lost substantially in 2-4 hour.Water becomes solution as solvent with other components dissolved, is beneficial to metering and even with other component mix of concrete.
The present invention is a brown liquid, concentration 20%-40%, density 1.08-1.28g/m
3, during use, its suitable incorporation in concrete is the 1.0%-5.0% of cement (comprising mineral admixture) weight, concrete volume is according to making the increased value of concrete flowability and the retentivity effect of concrete slump, and is definite by testing.The present invention is as control slump-loss type high performance concrete pumping agent, can effectively improve concrete flowability and application property, reduce the concrete flowability loss significantly, water-reducing rate reaches more than 20%, slump increased value is more than the 12cm, its slump of the concrete of being prepared was not lost (rate of loss is below 15%) substantially in 2-4 hour, intensity and weather resistance have by a relatively large margin to be increased, and can be used to prepare the various strength grade concrete of C20-C100.
The present invention is widely used in works (structures) such as commodity ready mixed concrete, mass concrete, Steel Concrete, light aggregate concrete, bridge, building, water conservancy project and road surface to the effect of inside concrete reinforcing bar non-corroding.
Starting material were easy to get during the present invention produced, and after tissue was produced, the rate of profit of bringing for manufacturer was about 15% of a price, and market outlook are good.
Embodiment
Embodiment 1, control slump-loss type high performance concrete pumping agent is pressed naphthalene sulfonic acidformaldehyde condensation product water reducer 33.2% (weight percent, as follows), polyvinyl alcohol 0.100%, 12 sodium alkyl sulfates 0.664%, citric acid 3.98%, Sunmorl N 60S 1.99%, water 60.066% is formulated, compare with (the not same proportioning concrete of this pumping agent of admixture) on the benchmark coagulation, admixture accounts for this high-performance pumping agent of cement quality 3.8%, can make concrete slump be increased on the basis of 23cm from 10cm, still have 6% water-reducing rate, this concrete bleeding rate is 0%, air content is 1.6%, not loss of the slump after 2 hours, the slump still is more than the 20cm after 4 hours, the slump-loss rate is less than 15%, and concrete 28d ultimate compression strength improves 18%, and impervious grade improves to some extent.
Embodiment 2, control slump-loss type high performance concrete pumping agent is pressed naphthalene sulfonic acidformaldehyde condensation product water reducer 30.0%, polyvinyl alcohol 0.091%, 12 sodium alkyl sulfates 0.909%, citric acid 6.00%, Sunmorl N 60S 3.00%, water 60.0% is formulated, compare with normal concrete (the not same proportioning concrete of this pumping agent of admixture), admixture accounts for this high-performance pumping agent of cement quality 2.0%, can make concrete slump be increased on the basis of 23cm from 10cm, still have 5% water-reducing rate, this profit, bleeding rate on the coagulation is 0%, air content is 2.8%, not loss of the slump after 2 hours, the slump still is more than the 20cm after 4 hours, and the slump-loss rate is less than 15%, and concrete 28d ultimate compression strength improves 12%, impervious grade improves to some extent, and the freeze-thaw-cyclicity improves 2 times.
Embodiment 3, control slump-loss type high performance concrete pumping agent is pressed naphthalene sulfonic acidformaldehyde condensation product water reducer 18.0%, polyvinyl alcohol 0.09%, 12 sodium alkyl sulfates 1.02%, citric acid 4.5%, Sunmorl N 60S 4.5%, water 71.89% is formulated, compare with normal concrete (the not same proportioning concrete of this pumping agent of admixture), admixture accounts for this high-performance pumping agent of cement quality 4.5%, can make concrete slump be increased on the basis of 23cm from 10cm, still have 5% water-reducing rate, this concrete bleeding rate is 0%, air content is 1.8%, not loss of the slump after 2 hours, the slump still is more than the 20cm after 4 hours, the slump-loss rate is less than 15%, concrete 28d ultimate compression strength improves 10%, and impervious grade improves to some extent, and the freeze-thaw-cyclicity improves 2 times.
Claims (3)
1, a kind of control slump-loss type high performance concrete pumping agent is characterized in that being made up of naphthalene sulfonic acidformaldehyde condensation product water reducer, polyvinyl alcohol, 12 sodium alkyl sulfates, citric acid, Sunmorl N 60S and water, and the weight ratio of each component is:
Naphthalene sulfonic acidformaldehyde condensation product water reducer 100
Polyvinyl alcohol 0.1-0.6
12 sodium alkyl sulfate 0.2-6.8
Citric acid 10-30
Sunmorl N 60S 2-30
Water 120-500.
2, control slump-loss type high performance concrete pumping agent according to claim 1 is characterized in that the preferable weight ratio of each component is:
Naphthalene sulfonic acidformaldehyde condensation product water reducer 100
Polyvinyl alcohol 0.1-0.4
12 sodium alkyl sulfate 1-4
Citric acid 10-25
Sunmorl N 60S 2-20
Water 140-200.
3, a kind of using method of control slump-loss type high performance concrete pumping agent as claimed in claim 1 is characterized in that the pumping agent incorporation is the 1.0%-5.0% of cement weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410016574 CN1285534C (en) | 2004-02-26 | 2004-02-26 | High performance concrete pumping agent controlling falling degree loss type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410016574 CN1285534C (en) | 2004-02-26 | 2004-02-26 | High performance concrete pumping agent controlling falling degree loss type |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1559964A CN1559964A (en) | 2005-01-05 |
| CN1285534C true CN1285534C (en) | 2006-11-22 |
Family
ID=34440545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410016574 Expired - Fee Related CN1285534C (en) | 2004-02-26 | 2004-02-26 | High performance concrete pumping agent controlling falling degree loss type |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1285534C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101913839A (en) * | 2010-08-12 | 2010-12-15 | 同济大学 | Color recycled concrete for producing decorative blocks |
| CN107459280A (en) * | 2017-07-21 | 2017-12-12 | 贵州凯襄新材料有限公司 | A kind of High strength pumping agent and preparation method thereof |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101133621B1 (en) * | 2006-02-20 | 2012-04-10 | 엘지전자 주식회사 | Automatic ventilation system and the control method of air conditioning system and controlling method thereof |
| CN1331799C (en) * | 2006-04-24 | 2007-08-15 | 蒋德双 | Concrete pump and preparation method thereof |
| CN101337790B (en) * | 2008-07-29 | 2011-05-11 | 金驥 | Multifunctional shrinking-compensation concrete pump-feed agent |
| CN102101761A (en) * | 2010-12-17 | 2011-06-22 | 上海华联建筑外加剂厂有限公司 | High-water-reduction, low-bleeding, micro-contraction and high-strength pumping aid |
| CN102101762B (en) * | 2010-12-29 | 2013-07-31 | 山东宏艺科技股份有限公司 | Exposed concrete pumping agent and preparation method thereof |
| CN103342500A (en) * | 2013-07-12 | 2013-10-09 | 中国建筑股份有限公司 | Clay screening agent and preparation method thereof |
| CN104016613B (en) * | 2014-06-19 | 2016-02-03 | 长沙矿山研究院有限责任公司 | A kind ofly improve additive of filling in mine slip degree of mobilization and preparation method thereof |
| CN105481289A (en) * | 2015-12-10 | 2016-04-13 | 文登蓝岛建筑工程有限公司 | Multifunctional high-performance concrete organosilicon waterproofing agent |
| CN106007461A (en) * | 2016-05-30 | 2016-10-12 | 江苏名和集团有限公司 | High performance concrete pumping aid |
| CN106186961B (en) * | 2016-07-21 | 2019-04-16 | 淄博矿业集团有限责任公司 | A kind of coal mine rubber solid material and its spoil lotion |
| CN107540264A (en) * | 2017-08-23 | 2018-01-05 | 钟传新 | A kind of concrete pump-feed agent and preparation method thereof |
| CN107586058A (en) * | 2017-08-23 | 2018-01-16 | 钟传新 | A kind of high-effective concrete pumping admixture and preparation method thereof |
| CN107540263A (en) * | 2017-08-23 | 2018-01-05 | 钟传新 | A kind of new concrete pumping agent and preparation method thereof |
| CN111253105A (en) * | 2020-03-20 | 2020-06-09 | 中国能源建设集团西北电力建设工程有限公司 | Concrete antifreezing pumping agent for high-alkali areas and preparation method thereof |
| CN111285632A (en) * | 2020-03-20 | 2020-06-16 | 中国能源建设集团西北电力建设工程有限公司 | Concrete pumping agent for high-alkali areas and preparation method thereof |
| CN114560663A (en) * | 2022-03-29 | 2022-05-31 | 保利长大工程有限公司 | Ultra-low color difference concrete based on heavy calcium powder and preparation method thereof |
-
2004
- 2004-02-26 CN CN 200410016574 patent/CN1285534C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101913839A (en) * | 2010-08-12 | 2010-12-15 | 同济大学 | Color recycled concrete for producing decorative blocks |
| CN101913839B (en) * | 2010-08-12 | 2012-11-07 | 同济大学 | Color recycled concrete for producing decorative blocks |
| CN107459280A (en) * | 2017-07-21 | 2017-12-12 | 贵州凯襄新材料有限公司 | A kind of High strength pumping agent and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1559964A (en) | 2005-01-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1285534C (en) | High performance concrete pumping agent controlling falling degree loss type | |
| CN103951304B (en) | A kind of concrete intensifier and its preparation method and application | |
| CN102060468B (en) | Grout additive | |
| CN108545975A (en) | A kind of modified SILICA FUME of gunite concrete | |
| CN102659373B (en) | High-performance corrosion-resisting concrete pile and preparation method thereof | |
| CN103011662A (en) | Alkali-activated high-performance water reducer and preparation method thereof | |
| CN108164208A (en) | A kind of nano silicon dioxide regeneration concrete and preparation method thereof | |
| CN102320770A (en) | Efficient liquid antifreezing agent for concrete, and preparation method thereof | |
| CN111689713B (en) | Special additive for concrete of prefabricated part and preparation method thereof | |
| CN102924023B (en) | Sulphoaluminate-base high-strength grouting concrete and preparation method thereof | |
| CN102491670B (en) | WHDF-type water-reducing, seepage-proof and crack-resistant agent for concrete | |
| CN107721287B (en) | A kind of diatomite modified concrete and preparation method thereof | |
| CN101143771B (en) | Light aggregate concrete pumping agent | |
| CN110156398B (en) | High-strength concrete and preparation method thereof | |
| CN102701633B (en) | High-efficiency concrete air entraining agent and preparation method thereof | |
| CN109180053B (en) | Low-resilience early-strength liquid alkali-free accelerator and preparation method thereof | |
| CN114276114A (en) | Early-strength rapid-hardening anti-permeability crack repairing material | |
| CN1844020A (en) | Concrete pump and preparation method thereof | |
| CN112876124A (en) | Internal-doped concrete reinforcing agent and preparation method thereof | |
| CN113105149A (en) | Concrete glue reducing agent and preparation method and application method thereof | |
| CN112047698A (en) | Low-loss light high-strength pump concrete and preparation method thereof | |
| CN111606625A (en) | Formula and preparation method of C70 high-strength self-compacting concrete | |
| CN111995287A (en) | Composite additive for sprayed concrete, preparation method thereof and concrete composition | |
| CN105271888A (en) | Modification additive suitable for low-quality aggregate concrete, and preparation method thereof | |
| CN112062486B (en) | Low-temperature cement and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Zhejiang Dadongwu Group Construction New Materials Co., Ltd. Assignor: Tongji University Contract fulfillment period: 2007.1.20 to 2015.1.19 contract change Contract record no.: 2008330002177 Denomination of invention: High performance concrete pumping agent controlling falling degree loss type Granted publication date: 20061122 License type: Exclusive license Record date: 20081120 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2007.1.20 TO 2015.1.19; CHANGE OF CONTRACT Name of requester: ZHEJIANG PROVINCE DADONGWU GROUP JIANXIN MATERIAL Effective date: 20081120 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061122 Termination date: 20110226 |