CN104446622A - Foam concrete with high waterproofness and preparation method thereof - Google Patents
Foam concrete with high waterproofness and preparation method thereof Download PDFInfo
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- CN104446622A CN104446622A CN201410691965.XA CN201410691965A CN104446622A CN 104446622 A CN104446622 A CN 104446622A CN 201410691965 A CN201410691965 A CN 201410691965A CN 104446622 A CN104446622 A CN 104446622A
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Abstract
The invention provides foam concrete with high waterproofness. The foam concrete with high waterproofness comprises the following components in parts by mass: 200-300 parts of concrete, 400-600 parts of inorganic particles with the grain diameter of 1-200 microns, 20-30 parts of a foaming agent and 15-25 parts of acrylic ester. Through addition of the acrylic ester, the foam concrete with high waterproofness has the advantages as follows: (1) the foam concrete is small in aggregation shrinkage and high in curing degree, and after the foam concrete is cured, performance of the foam concrete is not reduced, so that the foam concrete is guaranteed to be intact and compact and have good elasticity, high pressure resistance and a good sound-insulating effect; (2) the foam concrete is good in hydrophoby, so that the waterproofness of the foam concrete is improved and the foam concrete is high in permeability resistance; (3) the foam concrete is cheap, so that the production cost of the foam concrete is reduced; (4) the foam concrete is good in stability, so that the fact that the foam concrete can function in a lasting and safe manner is ensured.
Description
Technical field
The present invention relates to building material technical field, particularly relate to and a kind of there is foamed concrete of high water-repellancy and preparation method thereof.
Background technology
Foamed concrete is a member in concrete extended familys, and having the performances such as density is little, quality light, insulation, sound insulation, antidetonation, is a kind of New Building Materials.The basic raw material of foamed concrete is cement, lime, water, foam, on this basis some fillers of admixture, aggregate and admixture.Conventional filler and aggregate are: sand, flyash, haydite, stone fragment, expanded polystyrene, pearlstone, benzene take off gram fine aggregate, and conventional admixture is the same with normal concrete, are water reducer, water-resisting agent, retardant, setting accelerator etc.All pay much attention to the research and development of foamed concrete both at home and abroad, make it lead the application in city more and more wider in building.Can be applicable to retaining wall, build playground and track and field runway, sandwich component, support etc. as combined wall board, pipeline backfill, poor concrete packing course, roofing side slope, storage tank footing.
Present self-compacting foamed concrete material also useful slag, cement is made as raw material, but all need some alkali-activators and tensio-active agent to improve chemically reactive, make it to improve caking ability, improve the performance of concrete in sound insulation, resistance to compression after being formed, but this kind of concrete is easy to crack, water suction, reach less than good impermeability, a large amount of alkali-activators and tensio-active agent is added in formula, make the chemistry of concrete reagent taste weight after being formed, contaminate environment, causes very adverse influence to environmental protection.
Summary of the invention
The technical problem to be solved in the present invention is: in order to solve, present foamed concrete is easy to crack, water suction, reaches the problem less than good impermeability, the invention provides a kind ofly to have foamed concrete of high water-repellancy and preparation method thereof and solve the problems referred to above.
The technical solution adopted for the present invention to solve the technical problems is: a kind of foamed concrete with high water-repellancy, comprise following component according to the mass fraction: cement 200 ~ 300 parts, particle diameter is the inorganic particle 400 ~ 600 parts of 1 ~ 200 μm, whipping agent 20 ~ 30 parts, acrylate 15 ~ 25 parts.
As preferably, described acrylate is polymethacrylate, and weight average molecular weight scope is 6.5 ten thousand to 8.5 ten thousand, containing methacrylate ester monomeric unit 94 to 97wt%, and acrylic ester monomeric unit 3 to 6wt%, and other copolymerizable monomer unit 0 to 1wt%.
As preferably, described inorganic particle comprises one or more the combination in calcium carbonate, silicon ash, flyash, volcanic ash, glass or siliceous filler.
As preferably, described whipping agent is the one or more kinds of combinations in alkyl sulfonic ester, alkyl ether sulfonates, hydroxyalkyl ether sulphonate, α ?alkene sulfonic acid ester, benzene sulfonamide acid esters, alkyl sulfuric ester, alkyl ether sulphate, hydroxyalkyl ether sulfuric ester, α ?olefinic sulphur acid esters or alkylbenzene sulfuric ester.
There is a preparation method for the foamed concrete of high water-repellancy, comprise the following steps:
A) according to the mass fraction by following component mixing and stirring: cement 200 ~ 300 parts, 100 ~ 140 parts, water, particle diameter is the inorganic particle 400 ~ 600 parts of 1 ~ 200 μm, whipping agent 20 ~ 30 parts, acrylate 15 ~ 25 parts;
B) gas is introduced in step a) in obtain mixture in form foamed concrete;
C) be transported in mould by the foamed concrete stirred, humidity keeps more than 85%, and maintenance just can use for 3 days with regard to collapsible die to pour into after mould 24 ~ 48 hours.
The invention has the beneficial effects as follows, this foamed concrete with high water-repellancy has the following advantages by adding acrylate: (1) polymerization shrinkage is little, state of cure is high and can not reduce the performance of foamed concrete after solidification, ensure foamed concrete complete closely knit, elasticity is good, crushing resistance is strong, soundproof effect is good; (2) hydrophobicity is good, improves the water resistance of foamed concrete, impervious strong; (3) cheap, reduce the production cost of foamed concrete; (4) good stability, ensures that foamed concrete energy long-term safety is on active service.
Embodiment
The invention provides a kind of foamed concrete with high water-repellancy, comprise following component according to the mass fraction: cement 250 parts, particle diameter is the inorganic particle 500 parts of 100 μm, whipping agent 25 parts, acrylate 20 parts.
Acrylate is polymethacrylate, weight average molecular weight scope is 6.5 ten thousand to 8.5 ten thousand, containing methacrylate ester monomeric unit 94 to 97wt%, and acrylic ester monomeric unit 3 to 6wt%, and other copolymerizable monomer unit 0 to 1wt%.
Inorganic particle comprises one or more the combination in calcium carbonate, silicon ash, flyash, volcanic ash, glass or siliceous filler.
Whipping agent is the one or more kinds of combinations in alkyl sulfonic ester, alkyl ether sulfonates, hydroxyalkyl ether sulphonate, α ?alkene sulfonic acid ester, benzene sulfonamide acid esters, alkyl sulfuric ester, alkyl ether sulphate, hydroxyalkyl ether sulfuric ester, α ?olefinic sulphur acid esters or alkylbenzene sulfuric ester.
There is a preparation method for the foamed concrete of high water-repellancy, comprise the following steps:
A) according to the mass fraction by following component mixing and stirring: cement 250 parts, 120 parts, water, particle diameter is the inorganic particle 500 parts of 100 μm, whipping agent 25 parts, acrylate 20 parts;
B) gas is introduced in step a) in obtain mixture in form foamed concrete;
C) be transported in mould by the foamed concrete stirred, humidity keeps more than 85%, and maintenance just can use for 3 days with regard to collapsible die to pour into after mould 36 hours.
Water-absorbent is done to foamed concrete of the present invention, Standard Test Method for Permeation Resistance, according to the code in " People's Republic of China (PRC) building industry Hang industry Biao Zhun ?foamed concrete ", from this, there is the test specimen many groups choosing 100mm × 100mm × 100mm high water-repellancy foamed concrete, test specimen is put into loft drier, dry at 80 ± 5 DEG C, after drying is cooled to room temperature, the weight weighing test specimen is designated as M0, again test specimen is put into the Water Tank with Temp.-controlled of 20 ± 5 DEG C, then 1/3 of height of specimen is added water to, keep 24h, add water to 2/3 of height of specimen again, after 24h, add water and exceed more than test specimen 30mm, keep 24h, test specimen is taken out from water, surface-moisture is erased with wet cloth, take every block weight immediately and be designated as Mg, water-intake rate WR is calculated as follows:
Through test of many times, this mean water absorption rate with high water-repellancy foamed concrete is 8%, impervious good.
Have the test specimen getting thickness 10cm × 10cm × 10cm high water-repellancy foamed concrete, test of many times water permeability from of the present invention again, after 30 days, concrete another side is all without infiltration, concrete average permeable height 0.9cm when 45 days, impervious good.
With above-mentioned according to desirable embodiment of the present invention for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this invention technological thought, can carry out various change and amendment completely.The technical scope of this invention is not limited to the content on specification sheets, must determine its technical scope according to right.
Claims (5)
1. have a foamed concrete for high water-repellancy, it is characterized in that: comprise following component according to the mass fraction: cement 200 ~ 300 parts, particle diameter is the inorganic particle 400 ~ 600 parts of 1 ~ 200 μm, whipping agent 20 ~ 30 parts, acrylate 15 ~ 25 parts.
2. there is the foamed concrete of high water-repellancy as claimed in claim 1, it is characterized in that: described acrylate is polymethacrylate, weight average molecular weight scope is 6.5 ten thousand to 8.5 ten thousand, containing methacrylate ester monomeric unit 94 to 97wt%, and acrylic ester monomeric unit 3 to 6wt%, and other copolymerizable monomer unit 0 to 1wt%.
3. there is the foamed concrete of high water-repellancy as claimed in claim 1, it is characterized in that: described inorganic particle comprises one or more the combination in calcium carbonate, silicon ash, flyash, volcanic ash, glass or siliceous filler.
4. the foamed concrete with high water-repellancy as described in claim 1,2 or 3, is characterized in that: described whipping agent is the one or more kinds of combinations in alkyl sulfonic ester, alkyl ether sulfonates, hydroxyalkyl ether sulphonate, α ?alkene sulfonic acid ester, benzene sulfonamide acid esters, alkyl sulfuric ester, alkyl ether sulphate, hydroxyalkyl ether sulfuric ester, α ?olefinic sulphur acid esters or alkylbenzene sulfuric ester.
5. the preparation method with the foamed concrete of high water-repellancy as described in any one of Claims 1 to 4, is characterized in that: comprise the following steps:
A) according to the mass fraction by following component mixing and stirring: cement 200 ~ 300 parts, 100 ~ 140 parts, water, particle diameter is the inorganic particle 400 ~ 600 parts of 1 ~ 200 μm, whipping agent 20 ~ 30 parts, acrylate 15 ~ 25 parts;
B) gas is introduced in step a) in obtain mixture in form foamed concrete;
C) be transported in mould by the foamed concrete stirred, humidity keeps more than 85%, and maintenance just can use for 3 days with regard to collapsible die to pour into after mould 24 ~ 48 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410691965.XA CN104446622A (en) | 2014-11-25 | 2014-11-25 | Foam concrete with high waterproofness and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410691965.XA CN104446622A (en) | 2014-11-25 | 2014-11-25 | Foam concrete with high waterproofness and preparation method thereof |
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| CN104446622A true CN104446622A (en) | 2015-03-25 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105503256A (en) * | 2015-12-15 | 2016-04-20 | 苏州万盛混凝土有限公司 | Preparing method for elastic foam concrete |
| CN105541394A (en) * | 2015-12-18 | 2016-05-04 | 江苏兆通工程技术有限公司 | Foamed concrete |
| CN106966659A (en) * | 2017-04-07 | 2017-07-21 | 南京航空航天大学 | A kind of water-fast crack resistance type foam concrete and preparation method |
| CN110372290A (en) * | 2019-07-01 | 2019-10-25 | 苏州混凝土水泥制品研究院有限公司 | A kind of large dosage volcanic ash foam concrete material and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101182173A (en) * | 2007-11-30 | 2008-05-21 | 东南大学 | Key technology scheme according to improvement for insulation and material mechanics performance of aerated concrete |
| CN101353265A (en) * | 2008-09-11 | 2009-01-28 | 周照柱 | Cellular concrete product |
| CN102584081A (en) * | 2012-01-05 | 2012-07-18 | 黄飞 | Foam concrete additive and foam concrete |
| CN103936378A (en) * | 2013-01-18 | 2014-07-23 | 候姣姣 | Phosphogypsum-base foaming concrete |
-
2014
- 2014-11-25 CN CN201410691965.XA patent/CN104446622A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101182173A (en) * | 2007-11-30 | 2008-05-21 | 东南大学 | Key technology scheme according to improvement for insulation and material mechanics performance of aerated concrete |
| CN101353265A (en) * | 2008-09-11 | 2009-01-28 | 周照柱 | Cellular concrete product |
| CN102584081A (en) * | 2012-01-05 | 2012-07-18 | 黄飞 | Foam concrete additive and foam concrete |
| CN103936378A (en) * | 2013-01-18 | 2014-07-23 | 候姣姣 | Phosphogypsum-base foaming concrete |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105503256A (en) * | 2015-12-15 | 2016-04-20 | 苏州万盛混凝土有限公司 | Preparing method for elastic foam concrete |
| CN105541394A (en) * | 2015-12-18 | 2016-05-04 | 江苏兆通工程技术有限公司 | Foamed concrete |
| CN106966659A (en) * | 2017-04-07 | 2017-07-21 | 南京航空航天大学 | A kind of water-fast crack resistance type foam concrete and preparation method |
| CN110372290A (en) * | 2019-07-01 | 2019-10-25 | 苏州混凝土水泥制品研究院有限公司 | A kind of large dosage volcanic ash foam concrete material and preparation method thereof |
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Application publication date: 20150325 |