CN103172298B - Efficient water reducing agent for recycled aggregate concrete as well as preparation method and application thereof - Google Patents
Efficient water reducing agent for recycled aggregate concrete as well as preparation method and application thereof Download PDFInfo
- Publication number
- CN103172298B CN103172298B CN201110431899.9A CN201110431899A CN103172298B CN 103172298 B CN103172298 B CN 103172298B CN 201110431899 A CN201110431899 A CN 201110431899A CN 103172298 B CN103172298 B CN 103172298B
- Authority
- CN
- China
- Prior art keywords
- water
- reducing agent
- water reducer
- weight percent
- water reducing
- 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 invention belongs to the technical field of building materials, and relates to a water reducing agent as well as a preparation method and an application thereof. The water reducing agent is prepared from the following components in percentage by weight: 0-50% of a naphthalene-based efficient water reducing agent, 0-50% of a melamine resin-based water reducing agent, 0-50% of aliphatic efficient water reducing agent, 10-50% of lignosulfonate, 0.1-5% of sodium gluconate, 0.1-5% of sodium lauryl sulfate, 0.1-10% of sodium silicate, 0.1-10% of potassium methyl silicate and 10-65% of water. The water reducing agent has the advantages of wide raw material sources, simple production method, high production efficiency and obvious use effect, and is suitable for large-scale industrial production.
Description
Technical field
The invention belongs to building material technical field, relate to a kind of water reducer and its production and use.
Background technology
In recent years, along with the development of urban construction, produce a large amount of discarded concretes.The discarded concrete of flood tide, except processing costs is surprising, also needs to take a large amount of vacant lot and deposits, contaminate environment, and waste is ploughed, and becomes large public hazards in city, and the environmental problem causing is thus very outstanding.Therefore how rationally to process the common concern that these building wastes have caused government department and the public.Meanwhile, along with the continuous exploitation to natural sandstone, it is exhausted that nature bone aptitude source is also tending towards, and transportation energy consumption and the expense of its exploitation are surprising, also very serious to the destruction of ecotope.If can make construction refuse resource, be applied to construction work, can reduce environmental pollution, can save natural resources again.This will bring social benefit, economic benefit and environmental benefit simultaneously, is considered to develop green concrete, realizes one of major measure of buildings and resources environment sustainable development.
Generally by discarded concrete through cleaning, broken, classification and cooperatively interact by a certain percentage after the aggregate that obtains be called regeneration aggregate or Aggregate of recycled concrete, and a concrete that utilizes regeneration aggregate as part or all of aggregate preparation is called to regeneration concrete.Obviously, the development and application of regeneration concrete, can utilize discarded concrete on the one hand in a large number, substitutes natural aggregate after treatment as recycled aggregates, thereby reduces the consumption of construction industry to natural aggregate; The Application and Development of regeneration concrete has also fundamentally solved the problems such as the day by day deficient and a large amount of concrete debris of natural aggregate cause that ecotope goes from bad to worse on the other hand, has guaranteed the Sustainable development of human society.
But regeneration aggregate is because its mortar content is high, the apparent density that causes is low, water-intake rate high, makes it in the concrete process of actual production, show serviceability variation, and mechanical property is not good.Common production method, for increasing water consumption or prewetting for aggregate, still can not fundamentally solve the use problem of regeneration aggregate.Therefore the special additive of invention regeneration aggregate is most important for the production of regenerated aggregate concrete.
Summary of the invention
The object of the invention is to provide for the defect of prior art high efficiency water reducing agent and preparation method thereof and purposes for a kind of regenerated aggregate concrete.
For achieving the above object, the present invention is by the following technical solutions:
A water reducer, by the component that comprises following weight percent, made:
Described naphthalene series high-efficiency water-reducing agent is beta-naphthalenesulfonic-acid salt formaldehyde condensation products.
Described melmac based water reducer is sulfonated melamine compound resin.
Described aliphatic high-efficiency water reducing agent is water soluble sulfonated acetone formaldehyde polycondensates.
Described sulfonated lignin are selected from sodium lignosulfonate, calcium lignin sulphonate or magnesium lignosulfonate, are the necessary diminishing component of water reducer of the present invention.
The weight percent of described naphthalene series high-efficiency water-reducing agent is preferably 5～40%.
The weight percent of described melmac based water reducer is preferably 5～30%.
The weight percent of described aliphatic high-efficiency water reducing agent is preferably 10～40%.
The weight percent of described sulfonated lignin is preferably 10～40%.
The weight percent of described Sunmorl N 60S is preferably 0.1～3%.
The weight percent of described sodium lauryl sulphate is preferably 0.1～3%.
Described water glass is preferably 1～10%.
Described potassium methyl silicate is preferably 1～10%.
The solid content of described high efficiency water reducing agent is 20～50% (solid content is the amount of solid containing in liquid reagent, solid content=dry constant weight/material original weight * 100%).
The water-reducing rate of described high efficiency water reducing agent is 10～28%.
A preparation method for above-mentioned water reducer, comprises following steps:
(1) by said ratio, take each component raw material;
(2) above-mentioned each component raw material is stirred, obtain water reducer.
Whipping temp in described step (2) is 20～80 ℃.
Stirring velocity in described step (2) is 10～2000 revs/min.
Churning time in described step (2) is 1～30 minute.
A kind of above-mentioned water reducer is the application with water reducer as regenerated aggregate concrete.
The addition of described high efficiency water reducing agent be in concrete cement weight 0.5～3.0%.
Water reducer of the present invention is brown liquid.
The present invention compares with existing similar techniques, has following major advantage:
1, hydrophobic interaction.High efficiency water reducing agent of the present invention can produce hydrophobic effect, reduces the water sorption of regeneration aggregate, is conducive to the development of concrete performance.
2, low bleed air volume.High efficiency water reducing agent of the present invention has lower amount of air entrainment, is guaranteeing, in concrete performance basis, only to introduce a small amount of gas, to adapt to the high porosity of regeneration aggregate.
3, high water reducing rate.High efficiency water reducing agent of the present invention has higher water-reducing rate, and the concrete of mixing has large slump low slump loss simultaneously, does not emanate, bleeding not.
4, auxiliary reinforced effects.High efficiency water reducing agent of the present invention has higher strength ratio, can play auxiliary reinforced effects, to adapt to the feature that regeneration aggregate intensity is low.
Embodiment
Embodiment 1
(1) by following proportioning, take each component raw material: beta-naphthalenesulfonic-acid salt formaldehyde condensation products 5%, sulfonated melamine compound resin 5%, water soluble sulfonated acetone formaldehyde polycondensates 10%, calcium lignin sulphonate 10%, Sunmorl N 60S: 2%, sodium lauryl sulphate: 0.3%, water glass: 10%, potassium methyl silicate: 0.1%, water 57.6%;
(2) above-mentioned each component raw material is mixed: 40 ℃ of whipping temps, 120 revs/min of stirring velocitys, churning time 10 minutes.
Embodiment 2
(1) by following proportioning, take each component raw material: beta-naphthalenesulfonic-acid salt formaldehyde condensation products 30%, sulfonated melamine compound resin 5%, water soluble sulfonated acetone formaldehyde polycondensates 10%, calcium lignin sulphonate 10%, Sunmorl N 60S: 0.5%, sodium lauryl sulphate: 0.5%, water glass: 0.1%, potassium methyl silicate: 10%, water 33.9%;
(2) above-mentioned each component raw material is mixed: 20 ℃ of whipping temps, 1300 revs/min of stirring velocitys, churning time 5 minutes.
Embodiment 3
(1) by following proportioning, take each component raw material: beta-naphthalenesulfonic-acid salt formaldehyde condensation products 50%, sulfonated melamine compound resin 20%, water soluble sulfonated acetone formaldehyde polycondensates 0%, calcium lignin sulphonate 10%, Sunmorl N 60S: 5%, sodium lauryl sulphate: 1%, water glass: 0.5%, potassium methyl silicate: 0.5%, water 13%;
(2) above-mentioned each component raw material is mixed: 70 ℃ of whipping temps, 500 revs/min of stirring velocitys, churning time 20 minutes.
Embodiment 4
(1) by following proportioning, take each component raw material: beta-naphthalenesulfonic-acid salt formaldehyde condensation products 0%, sulfonated melamine compound resin 50%, water soluble sulfonated acetone formaldehyde polycondensates 20%, calcium lignin sulphonate 10%, Sunmorl N 60S: 0.5%, sodium lauryl sulphate: 2%, water glass: 0.5%, potassium methyl silicate: 0.5%, water 16.5%;
(2) above-mentioned each component raw material is mixed: 40 ℃ of whipping temps, 1300 revs/min of stirring velocitys, churning time 5 minutes.
Embodiment 5
(1) by following proportioning, take each component raw material: beta-naphthalenesulfonic-acid salt formaldehyde condensation products 0%, sulfonated melamine compound resin 0%, water soluble sulfonated acetone formaldehyde polycondensates 50%, calcium lignin sulphonate 30%, Sunmorl N 60S: 0.5%, sodium lauryl sulphate: 1%, water glass: 0.5%, potassium methyl silicate: 0.5%, water 17.5%;
(2) above-mentioned each component raw material is mixed: 40 ℃ of whipping temps, 1300 revs/min of stirring velocitys, churning time 5 minutes.
Embodiment 6
(1) by following proportioning, take each component raw material: beta-naphthalenesulfonic-acid salt formaldehyde condensation products 0%, sulfonated melamine compound resin 25%, water soluble sulfonated acetone formaldehyde polycondensates 0%, calcium lignin sulphonate 50%, Sunmorl N 60S: 2%, sodium lauryl sulphate: 0.5%, water glass: 5%, potassium methyl silicate: 5%, water 12.5%;
(2) above-mentioned each component raw material is mixed: 40 ℃ of whipping temps, 1800 revs/min of stirring velocitys, churning time 5 minutes.
To C30 pump concrete, concrete serviceability and the intensity of above each embodiment high efficiency water reducing agent of admixture see the following form.Regenerated aggregate concrete high efficiency water reducing agent is pressed cement weight than calculating:
Table 1 shows: used special efficient water reducer of the present invention, the serviceability of regenerated aggregate concrete has clear improvement, especially very remarkable through the reduction of time loss for serviceability.Notice intensity also meets design requirements, and is improved to some extent.
The above-mentioned description to embodiment is can understand and apply the invention for ease of those skilled in the art.Person skilled in the art obviously can easily make various modifications to these embodiment, and General Principle described herein is applied in other embodiment and needn't passes through performing creative labour.Therefore, the invention is not restricted to the embodiment here, those skilled in the art are according to announcement of the present invention, and not departing from the improvement that category of the present invention makes and revise all should be within protection scope of the present invention.
Claims (10)
1. a water reducer, is characterized in that: by the component that comprises following weight percent, made:
2. water reducer according to claim 1, is characterized in that: described naphthalene series high-efficiency water-reducing agent is beta-naphthalenesulfonic-acid salt formaldehyde condensation products.
3. water reducer according to claim 1, is characterized in that: described melmac based water reducer is sulfonated melamine compound resin.
4. water reducer according to claim 1, is characterized in that: described aliphatic high-efficiency water reducing agent is water soluble sulfonated acetone formaldehyde polycondensates;
Or described sulfonated lignin are selected from sodium lignosulfonate, calcium lignin sulphonate or magnesium lignosulfonate.
5. water reducer according to claim 1, is characterized in that: described naphthalene series high-efficiency water-reducing agent is 5～40%;
Or described melmac based water reducer is 5～30%;
Or described aliphatic high-efficiency water reducing agent is 10～40%;
Or described sulfonated lignin are 10～40%;
Or described Sunmorl N 60S is 0.1～3%;
Or described sodium lauryl sulphate is 0.1～3%;
Described water glass is 1～10%;
Or described potassium methyl silicate is 1～10%.
6. water reducer according to claim 1, is characterized in that: the solid content of described water reducer is 20～50%;
Or the water-reducing rate of described water reducer is 10～28%.
7. a preparation method for arbitrary described water reducer in the claims 1-6, is characterized in that: comprise following steps:
(1) take each component raw material: the naphthalene series high-efficiency water-reducing agent that weight percent is 0～50%, weight percent is 0～50% melmac based water reducer, weight percent is 0～50% aliphatic high-efficiency water reducing agent, weight percent is 10～50% sulfonated lignin, weight percent is 0.1～5% Sunmorl N 60S, weight percent is 0.1～5% sodium lauryl sulphate, weight percent is 0.1～10% water glass, weight percent is the water that 0.1～10% potassium methyl silicate and weight percent are 10～65%,
(2) above-mentioned each component raw material is stirred, obtain water reducer.
8. preparation method according to claim 7, is characterized in that: the whipping temp in described step (2) is 20～80 ℃;
Or the stirring velocity in described step (2) is 10～2000 revs/min;
Or the churning time in described step (2) is 1～30 minute.
9. arbitrary described water reducer application with water reducer as regenerated aggregate concrete in a claims 1-6.
10. application according to claim 9, is characterized in that: the addition of described water reducer be in concrete cement weight 0.5～3.0%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110431899.9A CN103172298B (en) | 2011-12-21 | 2011-12-21 | Efficient water reducing agent for recycled aggregate concrete as well as preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110431899.9A CN103172298B (en) | 2011-12-21 | 2011-12-21 | Efficient water reducing agent for recycled aggregate concrete as well as preparation method and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103172298A CN103172298A (en) | 2013-06-26 |
| CN103172298B true CN103172298B (en) | 2014-09-17 |
Family
ID=48632576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110431899.9A Expired - Fee Related CN103172298B (en) | 2011-12-21 | 2011-12-21 | Efficient water reducing agent for recycled aggregate concrete as well as preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103172298B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110395932A (en) * | 2019-08-05 | 2019-11-01 | 徐州巨龙新材料科技有限公司 | A kind of building waste recycling cement water reducing agent |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103588411A (en) * | 2013-11-01 | 2014-02-19 | 江苏百瑞吉新材料有限公司 | High efficiency concrete water reducing agent |
| CN103951307A (en) * | 2013-12-28 | 2014-07-30 | 福清市永春混凝土外加剂有限公司 | Composite functional-type additive and synthetic method thereof |
| CN104119023B (en) * | 2014-06-25 | 2015-12-30 | 芜湖市三兴混凝土外加剂有限公司 | Efficient retarding and water reducing agent |
| CN104119021B (en) * | 2014-06-25 | 2015-12-30 | 芜湖市三兴混凝土外加剂有限公司 | High efficiency water reducing agent |
| CN104119020B (en) * | 2014-06-25 | 2015-12-30 | 芜湖市三兴混凝土外加剂有限公司 | Slow setting diminishing crack inhibitor |
| CN105967543B (en) * | 2016-05-09 | 2018-01-19 | 济南大学 | A kind of water reducer of cement concrete |
| CN106007472B (en) * | 2016-05-24 | 2018-06-29 | 十九冶成都建设有限公司 | For the composite water-reducing agent of slag powders mountain flour large dosage double-admixing concrete |
| CN106277905A (en) * | 2016-08-08 | 2017-01-04 | 合肥永佳新材料科技有限公司 | A kind of concrete high-performance gas tracting subtractive agent and preparation method thereof |
| CN106220031A (en) * | 2016-08-08 | 2016-12-14 | 合肥永佳新材料科技有限公司 | A kind of anti-crack concrete water reducer and preparation method thereof |
| CN106542767A (en) * | 2016-12-02 | 2017-03-29 | 郑州峰泰纳米材料有限公司 | A kind of composite superplasticizer and preparation method thereof |
| CN108499472B (en) * | 2018-03-20 | 2019-03-05 | 广东水电二局股份有限公司 | Mixing device is used in the production of slow setting water reducing type concrete additive |
| CN109053016A (en) * | 2018-07-13 | 2018-12-21 | 中建西部建设贵州有限公司 | A kind of concrete compound blend composition and preparation method thereof |
| CN109437718B (en) * | 2018-11-20 | 2021-04-27 | 上海市建筑科学研究院 | C40-grade high-mixing-amount solid waste concrete and preparation method thereof |
| CN114276082B (en) * | 2021-12-25 | 2022-12-09 | 郴州中祁工程材料有限公司 | Recycled concrete using construction waste and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101244909A (en) * | 2008-03-24 | 2008-08-20 | 湖南省建筑工程集团总公司 | Highly durable high slump loss resistant no-bleeding concrete pump delivering agent |
| CN102101759A (en) * | 2010-12-30 | 2011-06-22 | 广东水电二局股份有限公司 | Concrete composite additive and preparation method and use thereof |
-
2011
- 2011-12-21 CN CN201110431899.9A patent/CN103172298B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101244909A (en) * | 2008-03-24 | 2008-08-20 | 湖南省建筑工程集团总公司 | Highly durable high slump loss resistant no-bleeding concrete pump delivering agent |
| CN102101759A (en) * | 2010-12-30 | 2011-06-22 | 广东水电二局股份有限公司 | Concrete composite additive and preparation method and use thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110395932A (en) * | 2019-08-05 | 2019-11-01 | 徐州巨龙新材料科技有限公司 | A kind of building waste recycling cement water reducing agent |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103172298A (en) | 2013-06-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103172298B (en) | Efficient water reducing agent for recycled aggregate concrete as well as preparation method and application thereof | |
| CN103030329B (en) | Enhanced admixture for municipal refuse recycled concrete as well as preparation method thereof and application thereof | |
| Okoye et al. | Durability of fly ash based geopolymer concrete in the presence of silica fume | |
| CN103951304B (en) | A kind of concrete intensifier and its preparation method and application | |
| CN103011662B (en) | Alkali-activated high-performance water reducer and preparation method thereof | |
| CN103951458B (en) | A kind of discarded unburned foaming haydite of fired brick powder and preparation method | |
| CN103771817B (en) | A kind of desulfurated plaster foam concrete and preparation method thereof | |
| CN106542767A (en) | A kind of composite superplasticizer and preparation method thereof | |
| CN106365555B (en) | A kind of mechanical injection wet-mixing plastering mortar and preparation method thereof | |
| CN103951327B (en) | A kind of discarded vitrified brick powder baking-free ceramicite and preparation method | |
| CN102775106B (en) | A kind of regeneration common brick sand dry powder mortar and manufacture method thereof | |
| CN103086667A (en) | Design method for mixing proportion of C20, C40 and C60 grade high-performance recycled concrete | |
| CN105330237A (en) | Baking-free brick produced from waste residues of concrete batching plant and preparation method thereof | |
| CN112624795B (en) | Desulfurized gypsum-based foam concrete and preparation method and application thereof | |
| CN104150840A (en) | C60 full-manufactured sand super high-rise pump concrete | |
| CN106986568A (en) | A kind of unburned lightweight aggregate, lightweight concrete and its preparation | |
| CN108164208A (en) | A kind of nano silicon dioxide regeneration concrete and preparation method thereof | |
| CN103664094A (en) | Light-weight aggregate concrete and preparation method thereof | |
| CN101891414A (en) | Polycarboxylic acid type special additive for lightweight aggregate concrete | |
| CN105060763A (en) | Cement plate composite modifier | |
| CN103496877A (en) | Concrete internal curing agent as well as preparation method and using method thereof | |
| CN104609748B (en) | A kind of super sulfur cement | |
| CN110510947A (en) | The method that microwave curing prepares the low-quality mine spike recycled cement based articles of large dosage | |
| CN108774021A (en) | A kind of regeneration concrete and preparation method thereof | |
| CN105252644A (en) | Concrete retempering technology based on ultrasonic treatment |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140917 Termination date: 20161221 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |