CN102372459A - Method for enhancing workability of concrete - Google Patents
Method for enhancing workability of concrete Download PDFInfo
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- CN102372459A CN102372459A CN2010102621395A CN201010262139A CN102372459A CN 102372459 A CN102372459 A CN 102372459A CN 2010102621395 A CN2010102621395 A CN 2010102621395A CN 201010262139 A CN201010262139 A CN 201010262139A CN 102372459 A CN102372459 A CN 102372459A
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Abstract
The invention provides a method for enhancing workability of concrete. A technical scheme of the invention is that a workability improving agent with hydrophilic colloid as a main component is added into the concrete to enhance workability of the concrete. Adding the workability improving agent with hydrophilic colloid as the main component into the concrete can reduce sensitivity of water reducer to aggregate, improve concrete holding phenomenon during strong concrete pumping, reduce concrete pumping pressure, so as to endow better construction performance on the concrete.
Description
Technical field
The present invention relates to a kind of method that improves the concrete over-all properties, relate in particular to a kind of method that improves concrete workability.
Background technology
Water reducer has become indispensable the 5th component in the current concrete, increasing coming into one's own.Polycarboxylate water-reducer is a kind of good comprehensive properties water reducer kind, and water reducer institutes such as water-reducing rate that it is higher and good slump retentivity naphthalene system or the aliphatics before being can not reach.At home; Polycarboxylate water-reducer has obtained fast development with its excellent performance; But polycarboxylate water-reducer exists many deficiencies equally; Because most of performance of polycarboxylate water-reducer mainly leans on the quality of masterbatch performance to embody, make composite become on the contrary simple of polycarboxylate water-reducer, have no way of doing it but after running into problem, just become.Particularly because the polycarboxylate water-reducer water-reducing rate is too high, when concrete mixing stood in the sub-platform scale metering of electricity consumption polycarboxylate water-reducer consumption, incorporation was slightly somewhat excessive, and disadvantages such as bleeding, dew stone, workability variation just appear in concrete; Polycarboxylate water-reducer is responsive to the sandstone material, even make a small amount of variation of material, also can significantly influence the addition content of polycarboxylate water-reducer; Be prone to when breaking strong concrete and grab end phenomenon, pumping difficulty etc.
To provide a kind of be raw material with Methylacrylic acid polyethylene glycol single armor ether ester and methacrylic aqueous acid to Chinese patent publication number CN101293946 patent to the single problem of polycarboxylate water-reducer mother liquor, and control temperature of reaction system and the solution pH value is prepared from a kind of bleed air bleed air controllable polycarboxylic acids water reducing agents.Also provide a kind of and synthesized a kind of cement mortar additive according to a certain weight ratio by montmorillonite powder, terra alba, Peng Run soil, Natural manganese dioxide, kaolin, dispersion agent like the patent of Chinese patent publication number CN1861542.The technology that is provided in the above-mentioned patent all has certain effect for the improvement of concrete workability, but these technical scheme manufacturing conditions are complicated, and the cost of its preparation raw material is high.
Summary of the invention
The invention provides a kind of method that improves concrete workability, to technological now shortcoming, is the workability activator of staple through in concrete, adding lyophilic colloid, improves concrete workability.Thereby reduce the susceptibility of polycarboxylate water-reducer to the sandstone material, improve when breaking strong concrete concrete and grab end phenomenon, the pressure when reducing concrete pumping etc. overcome the problems that exist in the concrete technology now.
The method that the present invention improves concrete workability realizes its purpose through following technical scheme:
A kind of method that improves concrete workability wherein, is added the workability activator in concrete, the staple of said workability activator is a lyophilic colloid.
The method of above-mentioned raising concrete workability, wherein, the polysaccharide of said lyophilic colloid for from plant, extracting.
The method of above-mentioned raising concrete workability, wherein, said lyophilic colloid is selected from one or more in sodium-alginate, carrageenin, agar, the konjak gum.
The method of above-mentioned raising concrete workability wherein, behind said lyophilic colloid wiring solution-forming, is added in the concrete.
The method of above-mentioned raising concrete workability, wherein, said lyophilic colloid strength of solution is 0.001%～5%, its special preferable range is 0.05%～0.15%.
The method of above-mentioned raising concrete workability, wherein, when concrete material when stirring, said hydrophilic gel liquid solution is added in the concrete.
The method of above-mentioned raising concrete workability, wherein, the hydrophilic gel liquid solution that said configuration is formed mixes with water reducer earlier, together is added in the concrete again.
The method of above-mentioned raising concrete workability, wherein, said water reducer is sulfomethylated lignin acids water reducer, Ppolynuclear aromatic salt water reducer, water soluble resin sulfonic acid class water reducer or polycarboxylate water-reducer.
The method of above-mentioned raising concrete workability, wherein, the mass content of said lyophilic colloid is 0.00001%～0.1% of a cement amount, its special preferable range 0.00001%～0.01%.
Adopt a kind of method that improves concrete workability of the present invention, its advantage is:
1. a kind of method that improves concrete workability of the present invention can make concrete have good water-retentivity and smoothness, thereby improves concrete workability.
2. a kind of method that improves concrete workability of the present invention can be strengthened concrete water retention capacity, has improved concrete excreting water phenomenon, thereby improves the concrete end phenomenon of grabbing.
3. the operating procedure of a kind of method that improves concrete workability of the present invention is simple, and industrial implementation property is strong, and the technique effect characteristic is obvious, can effectively improve concrete workability.
Embodiment
A kind of method that improves concrete workability of the present invention, thus adopt the method for in concrete, adding the workability activator to improve concrete workability.The staple of said workability activator is a lyophilic colloid.Wherein, The polysaccharide of said lyophilic colloid for from marine alga or taro platymiscium, extracting; Like the sodium-alginate that from seaweed plants such as sea-tangle, marine alga, sea grass, gelidium, fragrant plant mentioned in ancient texts, laver, extracts, carrageenin, agar etc., and the konjak gum that from taro, konjaku, extracts etc.
Said concrete can use various water reducers, like sulfomethylated lignin acids, Ppolynuclear aromatic salt, water soluble resin sulfonic acid class or polycarboxylate water-reducer.Concrete for having added the best polycarboxylate water-reducer of water-reducing effect now has outstanding effect equally.
Embodiment 1:
The first step: carrageenan solutions preparation:
As in the 100ml beaker, the warm water that adds earlier about 10g stirs, along with the carrying out that stirs with 1g carrageenin powder; Carrageenin gradually becomes very heavy-gravity paste, and the warm water that adds again about 10g stirs, and repeats above-mentioned steps; Until the warm water that adds about 50g, solution becomes must be unlike till the paste, and the warm water that adds 50～100g afterwards again stirs to reduce viscosity; This solution is transferred in the 1000ml beaker, thin up is made into 0.1% concentration to 1000g again.
Second step: carrageenin adds concrete:
Get PO42.5 cement 4.7Kg, flyash 0.5Kg, middle husky 6.3Kg; Stone 11Kg, water 1.65Kg, 20% polycarboxylate water-reducer PC 55g; Get 0.1% carrageenan solutions 5.5g again, add in single horizontal axis forced concrete mixer and stir, prepare the C50 high-grade concrete by the first step preparation.
Comparative Examples:
Common C50 concrete preparation: get PO42.5 cement 4.7Kg, flyash 0.5Kg, middle husky 6.3Kg, stone 11Kg, water 1.65Kg, 20% polycarboxylate water-reducer PC 55g adds in single horizontal axis forced concrete mixer and stirs, and makes common C50 concrete.
Data analysis:
The concrete test data that table one makes respectively for the method that adopts embodiment 1 method and Comparative Examples:
Table 1, the contrast of concrete index
| Embodiment 1 | Comparative Examples 1 | |
| The initial slump of concrete | ?220mm | ?220mm |
| Concrete initial flow degree | 580mm | 560mm |
| The concrete state | Cohesiveness is good, stirs easily with spade | Reveal stone and bleeding, grab at the end when stirring with spade |
| 1 hour slump of concrete | 200mm | 185mm |
| 1 hour degree of mobilization of concrete | 530mm | 450mm |
Show from table 1 display data; According to the method for embodiment 1, add and to contain the prepared concrete of method that the concrete each item concrete achievement data that makes behind the workability activator of lyophilic colloid all obviously is superior to not adding the employing Comparative Examples of workability activator.
After these plant lyophilic colloids were added in the concrete, because good water-retentivity and the smoothness of these plant lyophilic colloids, concrete workability improved.Behind these plant lyophilic colloids of adding an amount of in the concrete; Concrete consistence slightly increases, but because these plant lyophilic colloid molecular chain smoothness are very good, under the situation that concrete consistence slightly increases; Concrete divergence is not obviously dwindled; When mentioning slump cone, concrete can be the magic flower shape and flows under a lot of situation, rather than directly down caves in.
Will be appreciated that only as giving an example and propose preferred embodiment of the present invention, the present invention also not only is confined to this to the above embodiments, the various simple modifications that those skilled in the art can implement also should fall in protection scope of the present invention.
Claims (9)
1. a method that improves concrete workability is characterized in that, in concrete, adds the workability activator, and the staple of said workability activator is a lyophilic colloid.
2. the method for raising concrete workability according to claim 1 is characterized in that, the polysaccharide of said lyophilic colloid for from plant, extracting.
3. the method for raising concrete workability according to claim 2 is characterized in that, said lyophilic colloid is selected from one or more in sodium-alginate, carrageenin, agar, the konjak gum.
4. the method for raising concrete workability according to claim 3 is characterized in that, behind said lyophilic colloid wiring solution-forming, is added in the concrete.
5. the method for raising concrete workability according to claim 4 is characterized in that, said lyophilic colloid strength of solution is 0.001%～5%.
6. the method for raising concrete workability according to claim 4 is characterized in that, when concrete material when stirring, said hydrophilic gel liquid solution is added in the concrete.
7. the method for raising concrete workability according to claim 4 is characterized in that, the hydrophilic gel liquid solution that said configuration is formed mixes with water reducer earlier, together is added in the concrete again.
8. the method for raising concrete workability according to claim 7 is characterized in that, said water reducer is sulfomethylated lignin acids water reducer, Ppolynuclear aromatic salt water reducer, water soluble resin sulfonic acid class water reducer or polycarboxylate water-reducer.
9. the method for raising concrete workability according to claim 1 is characterized in that, the mass content of said lyophilic colloid is 0.00001%～0.01% of a cement amount.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010262139.5A CN102372459B (en) | 2010-08-24 | 2010-08-24 | Method for enhancing workability of concrete |
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| CN201010262139.5A CN102372459B (en) | 2010-08-24 | 2010-08-24 | Method for enhancing workability of concrete |
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| CN102372459B CN102372459B (en) | 2014-06-25 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105198298A (en) * | 2015-10-13 | 2015-12-30 | 安徽芜湖飞琪水泥制品有限公司 | Foam cement pile material composition and preparation method thereof |
| CN106854488A (en) * | 2016-11-24 | 2017-06-16 | 江苏中铁奥莱特新材料股份有限公司 | A kind of prestressing force PHC tubular pile concrete parting agent specials |
| CN108675666A (en) * | 2018-07-06 | 2018-10-19 | 江苏万邦新材料科技有限公司 | A kind of high-performance biology material list body polycarboxylate water-reducer and preparation method thereof |
| CN109809738A (en) * | 2019-01-14 | 2019-05-28 | 江苏金海宁新型建材科技有限公司 | A method of improving concrete flowability can |
| CN110183150A (en) * | 2019-04-11 | 2019-08-30 | 武汉理工大学 | A kind of sa waste chloride ion curing agent and its preparation method and application |
| CN111574158A (en) * | 2020-05-29 | 2020-08-25 | 胡丹萍 | Pumping lightweight aggregate concrete formula and preparation method thereof |
| CN115536339A (en) * | 2022-10-24 | 2022-12-30 | 深圳市恒星建材有限公司 | High-strength high-ductility concrete and preparation method thereof |
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| CN1065259A (en) * | 1987-05-07 | 1992-10-14 | 麦克公司 | The cement composition that comprises welan gum |
| US6110271A (en) * | 1995-12-15 | 2000-08-29 | Pharmacia Corporation | Methods for improved rheological control in cementitious systems |
| CN101182139A (en) * | 2007-11-12 | 2008-05-21 | 华南理工大学 | Masonry cement having higher strength and water retention |
| CN101508539A (en) * | 2009-03-30 | 2009-08-19 | 李藏柱 | Polymer glue powder and method of use thereof |
| CN101549973A (en) * | 2009-05-11 | 2009-10-07 | 江苏鼎达建材有限公司 | Compound concrete high efficiency water reducing agent |
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| CN1065259A (en) * | 1987-05-07 | 1992-10-14 | 麦克公司 | The cement composition that comprises welan gum |
| US6110271A (en) * | 1995-12-15 | 2000-08-29 | Pharmacia Corporation | Methods for improved rheological control in cementitious systems |
| CN101182139A (en) * | 2007-11-12 | 2008-05-21 | 华南理工大学 | Masonry cement having higher strength and water retention |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105198298A (en) * | 2015-10-13 | 2015-12-30 | 安徽芜湖飞琪水泥制品有限公司 | Foam cement pile material composition and preparation method thereof |
| CN106854488A (en) * | 2016-11-24 | 2017-06-16 | 江苏中铁奥莱特新材料股份有限公司 | A kind of prestressing force PHC tubular pile concrete parting agent specials |
| CN108675666A (en) * | 2018-07-06 | 2018-10-19 | 江苏万邦新材料科技有限公司 | A kind of high-performance biology material list body polycarboxylate water-reducer and preparation method thereof |
| CN109809738A (en) * | 2019-01-14 | 2019-05-28 | 江苏金海宁新型建材科技有限公司 | A method of improving concrete flowability can |
| CN110183150A (en) * | 2019-04-11 | 2019-08-30 | 武汉理工大学 | A kind of sa waste chloride ion curing agent and its preparation method and application |
| CN110183150B (en) * | 2019-04-11 | 2022-04-01 | 武汉理工大学 | Silicon-aluminum waste chloride ion curing agent and preparation method and application thereof |
| CN111574158A (en) * | 2020-05-29 | 2020-08-25 | 胡丹萍 | Pumping lightweight aggregate concrete formula and preparation method thereof |
| CN115536339A (en) * | 2022-10-24 | 2022-12-30 | 深圳市恒星建材有限公司 | High-strength high-ductility concrete and preparation method thereof |
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| CN102372459B (en) | 2014-06-25 |
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