CN102372459B - Method for enhancing workability of concrete - Google Patents
Method for enhancing workability of concrete Download PDFInfo
- Publication number
- CN102372459B CN102372459B CN201010262139.5A CN201010262139A CN102372459B CN 102372459 B CN102372459 B CN 102372459B CN 201010262139 A CN201010262139 A CN 201010262139A CN 102372459 B CN102372459 B CN 102372459B
- Authority
- CN
- China
- Prior art keywords
- concrete
- workability
- water
- reducer
- raising
- 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.)
- Active
Links
- 239000004567 concrete Substances 0.000 title claims abstract description 89
- 230000002708 enhancing Effects 0.000 title abstract 3
- 239000003638 reducing agent Substances 0.000 claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000008291 lyophilic colloid Substances 0.000 claims description 19
- 229920005646 polycarboxylate Polymers 0.000 claims description 17
- 239000012190 activator Substances 0.000 claims description 9
- 235000010418 carrageenan Nutrition 0.000 claims description 8
- 229920001525 carrageenan Polymers 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- 239000002253 acid Substances 0.000 claims description 7
- 150000007513 acids Chemical class 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 5
- 229920002752 Konjac Polymers 0.000 claims description 4
- 239000004568 cement Substances 0.000 claims description 4
- 239000000499 gel Substances 0.000 claims description 4
- 239000006193 liquid solution Substances 0.000 claims description 4
- 229920001817 Agar Polymers 0.000 claims description 3
- 240000000116 Alocasia Species 0.000 claims description 3
- 235000006481 Colocasia esculenta Nutrition 0.000 claims description 3
- 229940005550 Sodium alginate Drugs 0.000 claims description 3
- 239000008272 agar Substances 0.000 claims description 3
- 235000010419 agar Nutrition 0.000 claims description 3
- 125000003118 aryl group Chemical group 0.000 claims description 3
- 150000004676 glycans Polymers 0.000 claims description 3
- 229920000591 gum Polymers 0.000 claims description 3
- 235000010485 konjac Nutrition 0.000 claims description 3
- 229920005610 lignin Polymers 0.000 claims description 3
- 229920001282 polysaccharide Polymers 0.000 claims description 3
- 239000005017 polysaccharide Substances 0.000 claims description 3
- 150000004804 polysaccharides Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- MSXHSNHNTORCAW-UHFFFAOYSA-M sodium 3,4,5,6-tetrahydroxyoxane-2-carboxylate Chemical compound [Na+].OC1OC(C([O-])=O)C(O)C(O)C1O MSXHSNHNTORCAW-UHFFFAOYSA-M 0.000 claims description 3
- 235000010413 sodium alginate Nutrition 0.000 claims description 3
- 239000000661 sodium alginate Substances 0.000 claims description 3
- 241001529246 Platymiscium Species 0.000 claims description 2
- 238000005086 pumping Methods 0.000 abstract description 4
- 239000003795 chemical substances by application Substances 0.000 abstract description 3
- 239000000084 colloidal system Substances 0.000 abstract 2
- 238000010276 construction Methods 0.000 abstract 1
- 230000035945 sensitivity Effects 0.000 abstract 1
- 241000196324 Embryophyta Species 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000004575 stone Substances 0.000 description 4
- 229940113118 Carrageenan Drugs 0.000 description 2
- 206010018987 Haemorrhage Diseases 0.000 description 2
- 230000000740 bleeding Effects 0.000 description 2
- 231100000319 bleeding Toxicity 0.000 description 2
- 239000000679 carrageenan Substances 0.000 description 2
- 239000010881 fly ash Substances 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- UFWIBTONFRDIAS-UHFFFAOYSA-N naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- PZZYQPZGQPZBDN-UHFFFAOYSA-N Aluminium silicate Chemical compound O=[Al]O[Si](=O)O[Al]=O PZZYQPZGQPZBDN-UHFFFAOYSA-N 0.000 description 1
- 241001474374 Blennius Species 0.000 description 1
- 241000143687 Cantua buxifolia Species 0.000 description 1
- 230000036536 Cave Effects 0.000 description 1
- 241000206672 Gelidium Species 0.000 description 1
- 240000007058 Halophila ovalis Species 0.000 description 1
- 239000004594 Masterbatch (MB) Substances 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 241000206607 Porphyra umbilicalis Species 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive Effects 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 239000011260 aqueous acid Substances 0.000 description 1
- OSGAYBCDTDRGGQ-UHFFFAOYSA-N calcium;sulfuric acid Chemical compound [Ca+2].OS(O)(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-N 0.000 description 1
- 235000019994 cava Nutrition 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- KARVSHNNUWMXFO-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane;hydrate Chemical compound O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O KARVSHNNUWMXFO-UHFFFAOYSA-N 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- -1 ether ester Chemical class 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- 125000005395 methacrylic acid group Chemical group 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 229910052901 montmorillonite Inorganic materials 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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 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 current concrete, more and more comes into one's own.Polycarboxylate water-reducer is the good water reducer kind of a kind of over-all properties, the water-reducing rate that it is higher and the good slump retentivity water reducer such as naphthalene system or aliphatics before being can not and.At home, polycarboxylate water-reducer is developed rapidly with its excellent performance, but polycarboxylate water-reducer exists many deficiencies equally, because most of performance of polycarboxylate water-reducer mainly embodies by the quality of masterbatch performance, make composite become on the contrary simple of polycarboxylate water-reducer, but just become and have no way of doing it when encountering after problem.Particularly, because polycarboxylate water-reducer water-reducing rate is too high, when concrete mixing stands in the sub-platform scale metering of electricity consumption polycarboxylate water-reducer consumption, incorporation is slightly somewhat excessive, and concrete just occurs bleeding, reveals the disadvantages such as stone, workability variation; Polycarboxylate water-reducer is more responsive to sandstone material, even if make a small amount of variation of material, also can significantly affect the addition content of polycarboxylate water-reducer; While breaking strong concrete, be prone to and grab end phenomenon, pumping difficulty etc.
China Patent Publication No. CN101293946 patent provides a kind of take Methylacrylic acid polyethylene glycol single armor ether ester and methacrylic aqueous acid as raw material for the single problem of polycarboxylate water-reducer mother liquor, and controls temperature of reaction system and solution pH value is prepared from a kind of bleed air bleed air controllable polycarboxylic acids water reducing agents.Also as providing a kind of, the patent of China Patent Publication No. CN1861542 synthesizes according to a certain weight ratio a kind of cement mortar additive by montmorillonite powder, terra alba, Peng Run soil, magnesium oxide, kaolin, dispersion agent.The technology providing in above-mentioned patent all has certain effect for the improvement of concrete workability, but these technical scheme manufacturing condition complexity, and also the cost of its raw materials is high.
Summary of the invention
The invention provides a kind of method that improves concrete workability, for the shortcoming of technology now, by add the workability activator that lyophilic colloid is main component in concrete, improve concrete workability.Thereby reduce the susceptibility of polycarboxylate water-reducer to sandstone material, improve concrete while breaking strong concrete and grab end phenomenon, the pressure while reducing concrete pumping etc., overcome the problems that exist in concrete technology now.
The method that the present invention improves concrete workability is achieved through the following technical solutions its object:
Improve a method for concrete workability, wherein, in concrete, add workability activator, the main component of described workability activator is lyophilic colloid.
The method of above-mentioned raising concrete workability, wherein, described lyophilic colloid is the polysaccharide extracting from plant.
The method of above-mentioned raising concrete workability, wherein, described lyophilic colloid is selected from one or more in sodium alginate, carrageenin, agar, konjak gum.
The method of above-mentioned raising concrete workability, wherein, by after described lyophilic colloid wiring solution-forming, is added in concrete.
The method of above-mentioned raising concrete workability, wherein, described lyophilic colloid strength of solution is 0.001%～5%, its particularly preferably scope be 0.05%～0.15%.
The method of above-mentioned raising concrete workability, wherein, when concrete material is in the time stirring, adds described hydrophilic gel liquid solution in concrete.
The method of above-mentioned raising concrete workability, wherein, the hydrophilic gel liquid solution that described configuration is formed first mixes with water reducer, is more together added in concrete.
The method of above-mentioned raising concrete workability, wherein, described water reducer is sulfomethylated lignin acids water reducer, Ppolynuclear aromatic salt water reducer, water soluble resin sulphonic acids water reducer or polycarboxylate water-reducer.
The method of above-mentioned raising concrete workability, wherein, the mass content of described lyophilic colloid is cement amount 0.00001%～0.1%, it is scope 0.00001%～0.01% particularly preferably.
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 is strong, and technique effect feature is obvious, can effectively improve concrete workability.
Embodiment
A kind of method that improves concrete workability of the present invention, improves concrete workability thereby adopt to the method for adding workability activator in concrete.The main component of described workability activator is lyophilic colloid.Wherein, described lyophilic colloid is the polysaccharide extracting from marine alga or taro platymiscium, as the sodium alginate extracting from the seaweed plants such as sea-tangle, marine alga, sea grass, gelidium, fragrant plant mentioned in ancient texts, laver, carrageenin, agar etc., and the konjak gum extracting from taro, konjaku etc.
Described concrete can use various water reducers, as sulfomethylated lignin acids, Ppolynuclear aromatic salt, water soluble resin sulphonic acids or polycarboxylate water-reducer.For the concrete that has added the best polycarboxylate water-reducer of water-reducing effect now, there is equally outstanding effect.
Embodiment 1:
The first step: carrageenan solutions preparation:
By 1g carrageenin powder as in 100ml beaker, first add the warm water of 10g left and right to stir, along with the carrying out stirring, carrageenin gradually becomes the very paste of thickness, add again the warm water of 10g left and right to stir, repeat above-mentioned steps, until add the warm water of 50g left and right, solution becomes unlike till paste, add again afterwards the warm water of 50～100g to stir to reduce viscosity, again this solution is transferred in 1000ml beaker, is diluted with water to 1000g, be made into 0.1% concentration.
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 again the 0.1% carrageenan solutions 5.5g being prepared by the first step, add in single horizontal shaft forced type concrete mixer and stir, prepare C50 high-grade concrete.
Comparative example:
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 shaft forced type concrete mixer and stirs, and makes common C50 concrete.
Data analysis:
The concrete test data of table one for adopting the method for embodiment 1 method and comparative example to make respectively:
Table 1, the contrast of concrete index
| Embodiment 1 | Comparative example 1 | |
| The initial slump of concrete | 220mm | 220mm |
| Concrete initial flow degree | 580mm | 560mm |
| Concrete state | Cohesiveness is good, stirs easily with spade | Reveal stone and bleeding, while stirring with spade, grab at the end |
| 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 the concrete every concrete achievement data making after the workability activator that contains lyophilic colloid to be all obviously better than the prepared concrete of method of the employing comparative example that does not add workability activator.
After these plant lyophilic colloids are added in concrete, due to the good water-retentivity of these plant lyophilic colloids and smoothness, concrete workability improves.When appropriate adding after these plant lyophilic colloids in concrete, concrete consistence slightly increases, but because these plant lyophilic colloid molecular chain smoothness are very good, in the situation that concrete consistence slightly increases, concrete divergence is not obviously dwindled, in the time mentioning slump cone, in a lot of situations, concrete can be magic flower shape and flows, rather than directly down caves in.
Will be appreciated that, the above embodiments are only as exemplifying and propose preferred embodiment of the present invention, and the present invention is also not only confined to this, and the various simple modifications that those skilled in the art can implement also should fall within the scope of protection of the present invention.
Claims (7)
1. a method that improves concrete workability, is characterized in that, in concrete, adds workability activator, and the main component of described workability activator is lyophilic colloid; Described lyophilic colloid is selected from the polysaccharide extracting in marine alga or taro platymiscium, and mass content is cement amount 0.00001%～0.01%.
2. the method for raising concrete workability according to claim 1, is characterized in that, described lyophilic colloid is selected from one or more in sodium alginate, carrageenin, agar, konjak gum.
3. the method for raising concrete workability according to claim 1, is characterized in that, by after described lyophilic colloid wiring solution-forming, is added in concrete.
4. the method for raising concrete workability according to claim 3, is characterized in that, described lyophilic colloid strength of solution is 0.001%～5%.
5. the method for raising concrete workability according to claim 3, is characterized in that, when concrete material is in the time stirring, described hydrophilic gel liquid solution is added in concrete.
6. the method for raising concrete workability according to claim 3, is characterized in that, the hydrophilic gel liquid solution that described configuration is formed first mixes with water reducer, is more together added in concrete.
7. the method for raising concrete workability according to claim 6, is characterized in that, described water reducer is sulfomethylated lignin acids water reducer, Ppolynuclear aromatic salt water reducer, water soluble resin sulphonic acids water reducer or polycarboxylate water-reducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010262139.5A CN102372459B (en) | 2010-08-24 | 2010-08-24 | Method for enhancing workability of concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010262139.5A CN102372459B (en) | 2010-08-24 | 2010-08-24 | Method for enhancing workability of concrete |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102372459A CN102372459A (en) | 2012-03-14 |
| CN102372459B true CN102372459B (en) | 2014-06-25 |
Family
ID=45791753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010262139.5A Active CN102372459B (en) | 2010-08-24 | 2010-08-24 | Method for enhancing workability of concrete |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102372459B (en) |
Families Citing this family (6)
| 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 |
| CN106854488B (en) * | 2016-11-24 | 2019-10-22 | 江苏奥莱特新材料股份有限公司 | A kind of prestressing force PHC tubular pile concrete parting agent special |
| 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 |
| 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 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3855968T2 (en) * | 1987-05-07 | 1998-02-19 | Monsanto Co | Low viscosity Welan rubber, process for its preparation and its use in cement compositions. |
| AT190971T (en) * | 1995-12-15 | 2000-04-15 | Monsanto Co | METHOD FOR IMPROVED RHEOLOGICAL CONTROL IN CEMENT SYSTEMS |
-
2010
- 2010-08-24 CN CN201010262139.5A patent/CN102372459B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102372459A (en) | 2012-03-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102372459B (en) | Method for enhancing workability of concrete | |
| CN107805019B (en) | A kind of carbon nanotube enhancing superfine cement composite grout and preparation method thereof | |
| CN103086635A (en) | Pumping agent and application thereof | |
| CN102849980A (en) | Polycarboxylic series pumping agent and application thereof | |
| CN103641358B (en) | Effective pumping aid in premixing commodity packing design polycarboxylic acid series | |
| CN102276184B (en) | Retarding and water reducing agent for occlusal pile of subway drilling | |
| CN103951304A (en) | Concrete reinforcing agent as well as preparation method and application thereof | |
| CN103467014B (en) | A kind of concrete | |
| CN103922634B (en) | A kind of sand-cement slurry toughener | |
| CN105236890B (en) | A kind of water-resistance endurance roadbed injecting paste material and preparation method and application | |
| CN106565164A (en) | Modified high-sulfate-resistant corrosion-resistant concrete | |
| CN104829159A (en) | A slow-release controllable polycarboxylic acid water reducer specially used for self-compacting concrete for CRTSIII type plates | |
| CN102372461B (en) | Concrete additive | |
| CN107382220A (en) | A kind of frost-resistant concrete | |
| CN106116220B (en) | Concrete air-entrainer | |
| CN109987872A (en) | A kind of concrete high efficiency water reducing agent and preparation method thereof | |
| CN104446109A (en) | Concrete air-entraining agent | |
| CN103922628A (en) | Anti-freezing type polycarboxylic acid high-performance water reducer and preparation method thereof | |
| CN104649606B (en) | A kind of compound water reducer of high-efficiency environment friendly | |
| CN102372460A (en) | Concrete composite water reducer | |
| CN102659338A (en) | Polycarboxylic water reducer applicable to manufactured sand and preparation method of polycarboxylic water reducer | |
| CN113372054A (en) | Method for greatly improving water-washed sand concrete impermeability by powder-liquid double doping | |
| CN103992057B (en) | Solve the method for the delayed bleeding of concrete | |
| CN111333366B (en) | Seawater-resistant reinforced concrete admixture and preparation method thereof | |
| CN103265224A (en) | Polycarboxylate series low-concentration slump retaining intermediate-acting pumping agent |
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 |