CN108975758A - Foam concrete special additive - Google Patents
Foam concrete special additive Download PDFInfo
- Publication number
- CN108975758A CN108975758A CN201810820534.7A CN201810820534A CN108975758A CN 108975758 A CN108975758 A CN 108975758A CN 201810820534 A CN201810820534 A CN 201810820534A CN 108975758 A CN108975758 A CN 108975758A
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- foam
- foam concrete
- thickener
- concrete
- water
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a kind of foam concrete special additives, are related to concrete admixture field, it is intended to solve the problems, such as conventional additive foam stabilizing effect, bad to foam concrete strength improving effect in the prior art.Its key points of the technical solution are that including following component by mass percentage in formula: water-reducing agent 20%-22%, sodium sulphate 8%-10%, cellulose ether 0.05%-0.1%, thickener 0.8%-1.3%, foam stabilizer 2%, surplus are water.It further include the polyvinyl alcohol that mass percent content is 2.5%-3% in optimal technical scheme.The present invention has the advantage that performance is stable, can effectively improve concrete crushing strength.
Description
Technical field
The present invention relates to a kind of concrete admixtures, more specifically, it relates to a kind of foam concrete special additive.
Background technique
Foam concrete is also known as foamed cement, lightweight concrete, is by way of chemically or physically according to using needs
The gases such as air or nitrogen, carbon dioxide gas, oxygen are introduced into concrete mortar, are formed by reasonable maintenance, and formed
Containing a large amount of tiny sealed porositys, and the concrete product with suitable intensity, be a kind of benefit it is useless, environmentally friendly, energy saving, it is cheap and
With non-flame properties novel building energy-saving material.The production of foam concrete is usually mechanically to prepare infusion aqueous solution
At foam.
As a kind of novel energy saving and environment friendly construction material, domestic and foreign scholars have done it largely to grind foam concrete
Study carefully exploitation, is widely used in it in materials for wall.The performances such as its, light weight small with density, heat preservation, sound insulation, antidetonation, but its
There is also certain defects, there is the defects of low strength, easy to crack, water suction in the application, performance can be mixed by adding
Solidifying soil additive improves.
In the prior art, the Chinese patent that application publication number is CN104446201A disclose a kind of this foam concrete and its
Preparation method, foam concrete raw material include cement, water, foam, mineral additive, lightweight aggregate and additive.Its is additional
At least one of agent water-reducing agent identical with usual foam concrete admixture, waterproofing agent, coagulant.And conventional concrete and
Foam concrete performance, preparation process and in terms of have differences, thus using conventional concrete additive
Foam concrete is prepared, it is limited for improving foam stability, the improvement of enhancing foam concrete intensity.How to develop
A kind of foam concrete special additive that can effectively improve foam concrete intensity, is current problem to be solved.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of foam concrete special additive,
Its advantage stable with performance, that concrete crushing strength can be improved.
To achieve the above object, the present invention provides the following technical scheme that
A kind of foam concrete special additive, including following component by mass percentage, water-reducing agent 20%-22%, sulfuric acid
Sodium 8%-10%, cellulose ether 0.05%-0.1%, thickener 0.8%-1.3%, foam stabilizer 2%, surplus are water.
By using above-mentioned technical proposal, water-reducing agent can be obviously improved the workability of concrete, reduce concrete batching system
Isolation excreting water phenomenon.Sodium sulphate can increase the early strength of concrete as early strength agent.Cellulose ether and thickener tool
Play the role of increasing viscosity, slow down the movement and loss of bubble in concrete when preparing foam concrete, there is certain foam stabilizing
Effect.The macromolecular chain of cellulose ether and thickener can increase the adhesive fastness between concrete each component simultaneously, conducive to mentioning
The intensity of high concrete.Foam stabilizer can improve bubble stability, extend bubble burst half-life period, so that possessing in concrete enough
The bubble of amount, foam is fine and closely woven uniformly in foam concrete obtained, conducive to the heat preservation for improving foam concrete, heat-insulated, sound-proofing
Energy.
The intensity of concrete can be increased using the additive of said ratio, so that concrete uniform in foaming is fine and closely woven, performance
Stable homogeneous.
It further, further include polyvinyl alcohol, mass percent accounting is 2.5%-3%.
By using above-mentioned technical proposal, polyvinyl alcohol is hydrophilic, good film-forming property, and addition polyvinyl alcohol is conducive to increase concrete
The stability of interior bubble plays the role of certain foam stabilizing.Meanwhile polyvinyl alcohol also has certain thickening power, prepares foam
Inhibit the loss of bubble in concrete when concrete, so that bubble is uniformly fine and closely woven in the foam concrete of preparation.
Further, the water-reducing agent is poly carboxylic acid series water reducer or amino based water reducer.
By using above-mentioned technical proposal, poly carboxylic acid series water reducer and amino based water reducer are high efficiency water reducing agent, effect
The more traditional sulfonation naphthalene water reducer of fruit and sulfonated melamine compound water-reducing agent are highly efficient, stablize, concrete after addition
Workability is more preferable, isolation excreting water phenomenon is few.
Further, the cellulose ether is hydroxymethyl cellulose, hydroxyethyl cellulose or hydroxypropyl cellulose.
By using above-mentioned technical proposal, hydroxymethyl cellulose, hydroxyethyl cellulose or hydroxypropyl cellulose are common
Cellulose ether, there is good water imbibition, thickening, thickening can be played the role of, can play and increase steel fibre and coagulation
The effect of adhesion strength between soil matrix matter.In addition, cellulose ether also has certain air-entraining effect, it is conducive to increase in concrete
Air bubble content.
Further, the thickener is the mixture of polyurethane thickener and polyacrylic ester thickener.
By using above-mentioned technical proposal, polyacrylic ester thickener is point of lightly crosslinked acrylate polymer
Dispersion liquid, it can provide brilliant stability and thickening properties for surfactant system, and even if in low viscosity formulations
Also there is brilliant suspension.Polyurethane thickener good water-retaining property, it is good with the mixed thickening effect of polyacrylate thickening, and with
Well adapting to property of poly carboxylic acid series water reducer.
Further, the mass ratio of polyurethane thickener and polyacrylic ester thickener is 5:4 in the thickener.
By using above-mentioned technical proposal, the polyurethane thickener and polyacrylic ester thickener mixture of this kind of dosage, association
It is splendid with thickening effect.
Further, the foam stabilizer is silicone resin polyethers lotion.
By using above-mentioned technical proposal, silicone resin polyethers lotion can be improved the viscosity of foam, reduce bubble mobility,
The good elasticity of foam and self-reparing capability are assigned, bubble stability is improved, extends lather collapse half-life period, foam stabilizing effect is aobvious
It writes.
In conclusion the invention has the following advantages:
1, water-reducing agent and sodium sulphate can act synergistically, and improve the mobility of concrete, reduce isolation excreting water phenomenon；
2, the addition of cellulose ether, thickener and foam stabilizer can be improved the stability of bubble in concrete, solidifying conducive to concrete
Gu uniformly fine and closely woven bubble structure is obtained after；
3, the addition of polyvinyl alcohol can improve the viscosity of concrete, further promote foam stabilizing effect.
Specific embodiment
The present invention is described in further details below in conjunction with specific embodiment.
Embodiment 1
A kind of foam concrete special additive, raw material form by mass percentage are as follows:
Poly carboxylic acid series water reducer 20%, polyvinyl alcohol 2.5%, sodium sulphate 8.0%, hydroxymethyl cellulose 0.05%, thickener 0.8%, silicon
Resin polyethers lotion 2%, surplus is water.
Thickener used is formed by the ratio mixture of polyurethane thickener and polyacrylate thickening 5:4 in mass ratio.
Embodiment 2
A kind of foam concrete special additive, raw material form by mass percentage are as follows:
Poly carboxylic acid series water reducer 21%, polyvinyl alcohol 2.7%, sodium sulphate 8.3%, hydroxymethyl cellulose 0.04%, hydroxyethyl cellulose
0.03%, thickener 1%, silicone resin polyethers lotion 2%, surplus is water.
Thickener used is formed by the ratio mixture of polyurethane thickener and polyacrylate thickening 5:4 in mass ratio.
Embodiment 3
A kind of foam concrete special additive, raw material form by mass percentage are as follows:
Poly carboxylic acid series water reducer 22%, polyvinyl alcohol 3%, sodium sulphate 8.6%, hydroxymethyl cellulose 0.05%, hydroxyethyl cellulose
0.02%, hydroxypropyl cellulose 0.03%, thickener 1.3%, silicone resin polyethers lotion 2%, surplus is water.
Thickener used is formed by the ratio mixture of polyurethane thickener and polyacrylate thickening 5:4 in mass ratio.
Embodiment 4
A kind of foam concrete special additive, raw material form by mass percentage are as follows:
Poly carboxylic acid series water reducer 20%, polyvinyl alcohol 2.5%, sodium sulphate 9.0%, hydroxyethyl cellulose 0.05%, thickener 0.8%, silicon
Resin polyethers lotion 2%, surplus is water.
Thickener used is formed by the ratio mixture of polyurethane thickener and polyacrylate thickening 5:4 in mass ratio.
Embodiment 5
A kind of foam concrete special additive, raw material form by mass percentage are as follows:
Amino based water reducer 21%, polyvinyl alcohol 2.8%, sodium sulphate 9.2%, hydroxyethyl cellulose 0.05%, hydroxypropyl cellulose
0.03%, thickener 1.1%, silicone resin polyethers lotion 2%, surplus is water.
Thickener used is formed by the ratio mixture of polyurethane thickener and polyacrylate thickening 5:4 in mass ratio.
Embodiment 6
A kind of foam concrete special additive, raw material form by mass percentage are as follows:
Amino based water reducer 22%, polyvinyl alcohol 3%, sodium sulphate 9.5%, hydroxymethyl cellulose 0.05%, hydroxyethyl cellulose
0.03%, hydroxypropyl cellulose 0.02%, thickener 1.3%, silicone resin polyethers lotion 2%, surplus is water.
Thickener used is formed by the ratio mixture of polyurethane thickener and polyacrylate thickening 5:4 in mass ratio.
Embodiment 7
A kind of foam concrete special additive, raw material form by mass percentage are as follows:
Amino based water reducer 22%, sodium sulphate 9.8%, hydroxypropyl cellulose 0.06%, thickener 0.9%, silicone resin polyethers lotion 2%,
Surplus is water.
Thickener used is formed by the ratio mixture of polyurethane thickener and polyacrylate thickening 5:4 in mass ratio.
Embodiment 8
A kind of foam concrete special additive, raw material form by mass percentage are as follows:
Amino based water reducer 22%, sodium sulphate 10%, hydroxymethyl cellulose 0.06%, hydroxypropyl cellulose 0.03%, thickener 1.2%,
Silicone resin polyethers lotion 2%, surplus is water.
Thickener used is formed by the ratio mixture of polyurethane thickener and polyacrylate thickening 5:4 in mass ratio.
Reference examples 1
A kind of foam concrete additive, raw material composition is the difference from embodiment 1 is that be free of sodium sulphate.
Reference examples 2
A kind of foam concrete additive, raw material composition is the difference from embodiment 1 is that be free of hydroxymethyl cellulose and thickening
Agent.
Reference examples 3
A kind of foam concrete additive, raw material composition is the difference from embodiment 1 is that reduced water content is 18%.
Using the foam concrete of non-Mixed With Admixture as control sample, embodiment 1 is added respectively to the additive for implementing 8
Foam concrete is 1#-8# concrete sample, adds the foam concrete of the additive of reference examples 1-3 respectively as control sample
1-3, the volume for controlling additive is the 2.2% of gel rubber material quality, referring to JG/T266-2011 " foam concrete " to control sample
And the performance of each sample is tested, as a result as shown in the table:
By upper table data it is found that control sample 1 mould that collapses occurs due to being not added with sodium sulphate, and early strength is low；Control sample 2 is free of hydroxyl
Methylcellulose and thickener, slurry stability is poor and foam concrete is caused to be layered, and control sample 3 is then due in additive
Reduced water content it is lower prepared by slurry workability it is poor, cause with bubble mix when bubble it is fragile, to increase bubble
The apparent density of foam concrete.And the concrete sample 1#-8# for adding foam concrete special additive is relatively not added with additive
The early strength of concrete control sample promoted, and later strength is promoted obvious, i.e. addition foam concrete is dedicated additional
The compression strength of concrete test block after agent significantly improves.Meanwhile sample 1#-8# does not occur mould situation of collapsing, that is, adds this hair
After bright foam concrete special additive, the foam stability of foam concrete is higher, obtains after being conducive to concrete hardening
Even, fine and closely woven foaming structure.
Above-mentioned specific embodiment is only explanation of the invention, is not limitation of the present invention, art technology
Personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as
All by the protection of Patent Law in scope of the presently claimed invention.
Claims (7)
1. a kind of foam concrete special additive, it is characterised in that: including following component by mass percentage, water-reducing agent
20%-22%, sodium sulphate 8%-10%, cellulose ether 0.05%-0.1%, thickener 0.8%-1.3%, foam stabilizer 2%, surplus are water.
2. foam concrete special additive according to claim 1, it is characterised in that: further include polyvinyl alcohol, matter
Amount percentage accounting is 2.5%-3%.
3. foam concrete special additive according to claim 1, it is characterised in that: the water-reducing agent is polycarboxylic-acid
Water-reducing agent or amino based water reducer.
4. foam concrete special additive according to claim 1, it is characterised in that: the cellulose ether is methylol
Cellulose, hydroxyethyl cellulose or hydroxypropyl cellulose.
5. foam concrete special additive according to claim 1, it is characterised in that: the thickener is polyurethane
The mixture of thick dose and polyacrylic ester thickener.
6. foam concrete special additive according to claim 5, it is characterised in that: polyurethane in the thickener
The mass ratio of thick dose and polyacrylic ester thickener is 5:4.
7. foam concrete special additive according to claim 1, it is characterised in that: the foam stabilizer is poly- for silicone resin
Ether lotion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810820534.7A CN108975758A (en) | 2018-07-24 | 2018-07-24 | Foam concrete special additive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810820534.7A CN108975758A (en) | 2018-07-24 | 2018-07-24 | Foam concrete special additive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108975758A true CN108975758A (en) | 2018-12-11 |
Family
ID=64549064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810820534.7A Pending CN108975758A (en) | 2018-07-24 | 2018-07-24 | Foam concrete special additive |
Country Status (1)
| Country | Link |
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| CN (1) | CN108975758A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112159245A (en) * | 2020-10-09 | 2021-01-01 | 四川宏量基筑建材有限公司 | Environment-friendly anti-seepage aerated concrete and preparation method thereof |
| CN118271040A (en) * | 2024-04-13 | 2024-07-02 | 浙江台州天强建材有限公司 | Preparation process of high-strength foam concrete |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0816300A2 (en) * | 1996-07-01 | 1998-01-07 | Halliburton Energy Services, Inc. | Well cement compositions |
| US5900053A (en) * | 1997-08-15 | 1999-05-04 | Halliburton Energy Services, Inc. | Light weight high temperature well cement compositions and methods |
| CN104108912A (en) * | 2014-06-19 | 2014-10-22 | 广东省建筑科学研究院 | Lightweight high-performance foam concrete and preparation method thereof |
| CN107162459A (en) * | 2017-07-06 | 2017-09-15 | 杭州构建新型材料有限公司 | Premixing mortar additive and its preparation technology, application process |
-
2018
- 2018-07-24 CN CN201810820534.7A patent/CN108975758A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0816300A2 (en) * | 1996-07-01 | 1998-01-07 | Halliburton Energy Services, Inc. | Well cement compositions |
| US5900053A (en) * | 1997-08-15 | 1999-05-04 | Halliburton Energy Services, Inc. | Light weight high temperature well cement compositions and methods |
| CN104108912A (en) * | 2014-06-19 | 2014-10-22 | 广东省建筑科学研究院 | Lightweight high-performance foam concrete and preparation method thereof |
| CN107162459A (en) * | 2017-07-06 | 2017-09-15 | 杭州构建新型材料有限公司 | Premixing mortar additive and its preparation technology, application process |
Non-Patent Citations (2)
| Title |
|---|
| 张巨松等编著: "《泡沫混凝土》", 31 January 2016, 哈尔滨工业大学出版社 * |
| 王国建编著: "《功能高分子材料 第2版》", 30 June 2014, 同济大学出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112159245A (en) * | 2020-10-09 | 2021-01-01 | 四川宏量基筑建材有限公司 | Environment-friendly anti-seepage aerated concrete and preparation method thereof |
| CN118271040A (en) * | 2024-04-13 | 2024-07-02 | 浙江台州天强建材有限公司 | Preparation process of high-strength foam concrete |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20181211 |