CN104446621A - Method for preparing coal gangue foam concrete composite foaming agent - Google Patents
Method for preparing coal gangue foam concrete composite foaming agent Download PDFInfo
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- CN104446621A CN104446621A CN201410681489.3A CN201410681489A CN104446621A CN 104446621 A CN104446621 A CN 104446621A CN 201410681489 A CN201410681489 A CN 201410681489A CN 104446621 A CN104446621 A CN 104446621A
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Abstract
The invention discloses a method for preparing a coal gangue foam concrete composite foaming agent. The method comprises the following steps: firstly, weighing 0.5-10 parts by weight of a lauryl sodium sulfate foaming agent and 1,000-3,000 parts by weight of water, and uniformly mixing the components; then, weighing 0.5-5 parts by weight of a dodecanol foam stabilizer and 1,000-10,000 parts by weight of water, uniformly mixing the components, and pouring the mixture into uniformly mixed foaming liquid; then, adding 0.05-0.6 wt% of calcium chloride, sodium sulfate or a triethanolamine concrete early strength agent into the foaming liquid, wherein the foaming ratio of the foaming agent is 21.3, the primary bleeding time is 7 minutes, 90 minutes later, the foam settling distance is 38 mm, the compatibility of the foaming agent with the concrete early strength agent is good, the adding dosage of coal gangue in the coal gangue foam concrete prepared from the foaming agent by foaming is up to 76%, the maximal granule of the coal gangue is 5 mm, and the compressive strength of products meets the requirements of coal mine filling.
Description
Technical field
The present invention relates to a kind of preparation method of gangue foam concrete composite foamable agent, this whipping agent is mainly used in the preparation of the gangue foam concrete of high-content coal gangue low levels cement.
Background technology
In order to prevent coal mine gob from natural disaster occurring, filling must be carried out to coal mine gob.Take coal gangue as raw material, have lightweight, the foamed concrete that high-strength and thermal insulation is good for the preparation of coal mine gob filling, production cost is low, preparation technology is simple, and good fluidity, is easy to pumping, down-hole does not need dehydration, is a kind of novel filling in mine material.In foamed concrete preparation process, foaming technique is divided into physical blowing and chemical foaming method, and physical blowing legal system is in the technique of foamed concrete, and the performance of whipping agent determines foamed concrete intensity, heat insulation, sound insulation, the key factor that whether ftractures.In general, foam concrete foamer should have good foaming function and surely steep function, in addition, also should have the blood coagulation enhancing effect to cement.
Be in new spice slurry, produce gas by chemical reaction about foamed concrete chemical foaming method in the document of prior art, in concrete, produce bubble or air pocket.Although this measure can introduce a small amount of gas effectively, because the Air Bubble Size in concrete, number of bubbles, weather resistance and bubble distribution are difficult to control, the foamed concrete of preparation can not meet actual production.The present invention mainly uses homemade composite foamable agent to prepare high-content large coal particles spoil low levels cement foam concrete, for coal mine gob filling.
The introduction preparing the whipping agent of foamed concrete in document mainly contains:
Periodical " concrete and cement products " the 12nd phase in 2013 total 211st phase the 23rd page to the 28th page discloses the research article of the preparation of one section of auspicious protein type whipping agent write of history star and the impact on foamed concrete performance thereof.Test is raw material with chicken feather, adopts Ca (OH)
2hydrolysis method prepares protein type whipping agent, system thinking raw materials pretreatment, Ca (OH)
2consumption, hydrolysis time and hydrolysis temperature are on the impact of foaming agent foam performance.And carry out composite modified to admixture propyl carbinol in this whipping agent and viscous substance Xylo-Mucine, to improve foaming agent foam performance.Finally use 4 kinds of dissimilar whipping agents to prepare foamed concrete, study its impact on foamed concrete intensity and pore structure.Result shows, preparation protein type whipping agent optimal processing parameter is: Ca (OH)
210g, hydrolysis temperature 110 DEG C, hydrolysis time 2h; When time composite modified, propyl carbinol and Xylo-Mucine volume are respectively 0.2%, 0.03%, froth stability is best, and 1h bleeding rate is down to 11.59% by 38.89%.With 300kg/m prepared by modified protein type whipping agent
3level foamed concrete, prepared by its intensity other 3 kinds of whipping agents relative wants high, and 28d ultimate compression strength reaches 0.85MPa, and its aperture is at about 0.5mm, and pore distribution is comparatively evenly regular.
Periodical " journal of Zhejiang university (Edition) " the 5th phase 39 volume the 606th in 2012 discloses the research article of the foam performance research of the foam concrete foamer that one section of Xiao Hong power is write to the 610th page.Research shows, with sodium N-lauroyl sarcosinate, Polyoxyethylene Methyl Glucoside Ether dioleic acid ester and vinylformic acid cross-linked resin carry out composition research to common foaming Sodium dodecylbenzene sulfonate. by foam height and the froth breaking transformation period sign foaming agent foam stability of Roche Latherometer, and the result produced is made an explanation. experimental result shows, under proper condition, 3 kinds of complex additives can improve the foaming properties of Sodium dodecylbenzene sulfonate to a certain extent, wherein the Sodium dodecylbenzene sulfonate of 0.7% adds the three components compound system that the Polyoxyethylene Methyl Glucoside Ether dioleic acid ester of 0.175% and the vinylformic acid cross-linked resin of 0.07% form, foaming properties is excellent.
The research article that the relation that periodical " concrete " o. 11th total 241st phase in 2009 the 78th page to the 82nd page discloses whipping agent that one section of Li Senlan writes and its foamed concrete ultimate compression strength is analysed.Mutually be uniformly mixed the analysis of process by the structure to whipping agent stoste, foamy structure and foaming agent foam and cement, flyash slurry, find that the character of whipping agent itself, optimum diluting multiple and most suitable water cement ratio are the important factors determining foamed concrete ultimate compression strength.Improve the character of whipping agent, key is to use the tensio-active agent of " many carboxyls list alkyl " and stablizer supporting with it.
More than research shows, foam concrete foamer is the key factor determining foamed concrete performance, and the formula of whipping agent determines the quality of foamed concrete.But at least there is following problem in above-mentioned prior art:
(1) protein whipping agent due to material source limited, cost is higher, and the market competitiveness is not enough; And its quality guaranteed period is shorter, when temperature is 25 ~ 30 DEG C, 3 days just rotten smelly, apt to deteriorate, constrains its large-scale promotion in suitability for industrialized production.
(2) preparing foamed concrete whipping agent Sodium dodecylbenzene sulfonate used large usage quantity, is 0.7%, and composite component is three components compound system, complex process.
(3) foam that whipping agent Sodium dodecylbenzene sulfonate is obtained obtains poor stability, is not enough to support the extruding of coal gangue macrobead, and bubbling phenomenon appears in foamed slurry.
Summary of the invention
The object of this invention is to provide a kind of formula of large coal particles spoil foam concrete foamer of highly effective.
The object of the invention is to be achieved through the following technical solutions:
The preparation method of stone foam concrete foamer of the present invention, comprises step:
A, take the sodium lauryl sulphate whipping agent of 0.5 ~ 10 weight part and the water of 1000 ~ 3000 weight parts, mix;
B, take the lauryl alcohol suds-stabilizing agent of 0.5 ~ 5 weight part and the water of 1000 ~ 10000 weight parts, mix, pour in the expanding foam solution mixed;
C, calcium chloride, sodium sulfate or trolamine concrete early strength agent with 0.05 ~ 0.6% weight part add in expanding foam solution;
D, take the PO425 cement of 20 weight parts, the granular size of 55 ~ 65 weight parts is the coal gangue of 0.5 ~ 6mm, the water of 15 ~ 20 weight parts, then stir in stirrer and prepare concrete mortar; The foam of preparation is added in concrete mortar, stir 2 ~ 6min even to slurry, prepare foamed concrete slurry, then the foamed concrete slurry prepared is injected pre-prepd die for molding, the maintenance of concrete standard constant-temp. and-moisture maintenance is put into each length of time after resting 24 hours, wherein the temperature of concrete standard constant-temp. and-moisture maintenance is 19 ~ 21 DEG C, and relative humidity is 95% ~ 99%.
As seen from the above technical solution provided by the invention, foam concrete foamer of the present invention has the following advantages:
Operating procedure is simple, and prepare at ambient temperature, raw material is common, and consumption is few, is that 2 components are composite.Feed coal spoil does not need calcining, and coal gangue particle used is maximum can reach 5mm, both can save energy, can save disintegrating apparatus and expense yet.
Embodiment
To be described in further detail the embodiment of the present invention below.
The present invention by the restriction of following embodiment, can not determine concrete embodiment according to technical scheme of the present invention and practical situation.
Embodiment 1
The preparation method of foam concrete foamer of the present invention, comprises step:
A, take the sodium lauryl sulphate whipping agent of 1 ~ 3 weight part and the water of 1000 ~ 1500 weight parts, mix;
B, take the lauryl alcohol suds-stabilizing agent of 0.5 ~ 2 weight part and the water of 1000 ~ 5000 weight parts, mix, pour in the expanding foam solution mixed;
C, the calcium chloride of 0.1 ~ 0.3% weight part, sodium sulfate or trolamine concrete early strength agent add in expanding foam solution;
D, take the PO425 cement of 20 weight parts, the granular size of 55 ~ 65 weight parts is the coal gangue of 0.5 ~ 6mm, the water of 15 ~ 20 weight parts, then stir in stirrer and prepare concrete mortar; The foam of preparation is added in concrete mortar, stir 2 ~ 6min even to slurry, prepare foamed concrete slurry, then the foamed concrete slurry prepared is injected pre-prepd die for molding, the maintenance of concrete standard constant-temp. and-moisture maintenance is put into each length of time after resting 24 hours, wherein the temperature of concrete standard constant-temp. and-moisture maintenance is 19 ~ 21 DEG C, and relative humidity is 95% ~ 99%.
Embodiment 2
A, take the sodium lauryl sulphate whipping agent of 3 ~ 5 weight parts and the water of 1200 ~ 2000 weight parts, mix;
B, take the lauryl alcohol suds-stabilizing agent of 2 ~ 3 weight parts and the water of 3000 ~ 5000 weight parts, mix, pour in the expanding foam solution mixed;
C, the calcium chloride of 0.2 ~ 0.4% weight part, sodium sulfate or trolamine concrete early strength agent add in expanding foam solution;
D, take the PO425 cement of 20 weight parts, the granular size of 55 ~ 65 weight parts is the coal gangue of 0.5 ~ 6mm, the water of 15 ~ 20 weight parts, then stir in stirrer and prepare concrete mortar; The foam of preparation is added in concrete mortar, stir 2 ~ 6min even to slurry, prepare foamed concrete slurry, then the foamed concrete slurry prepared is injected pre-prepd die for molding, the maintenance of concrete standard constant-temp. and-moisture maintenance is put into each length of time after resting 24 hours, wherein the temperature of concrete standard constant-temp. and-moisture maintenance is 19 ~ 21 DEG C, and relative humidity is 95% ~ 99%.
Embodiment 3
A, take the sodium lauryl sulphate whipping agent of 5 ~ 8 weight parts and the water of 1500 ~ 2800 weight parts, mix;
B, take the lauryl alcohol suds-stabilizing agent of 0.5 ~ 5 weight part and the water of 1000 ~ 10000 weight parts, mix, pour in the expanding foam solution mixed;
C, the calcium chloride of 0.05 ~ 0.6% weight part, sodium sulfate or trolamine concrete early strength agent add in expanding foam solution;
D, take the PO425 cement of 20 weight parts, the granular size of 55 ~ 65 weight parts is the coal gangue of 0.5 ~ 6mm, the water of 15 ~ 20 weight parts, then stir in stirrer and prepare concrete mortar; The foam of preparation is added in concrete mortar, stir 2 ~ 6min even to slurry, prepare foamed concrete slurry, then the foamed concrete slurry prepared is injected pre-prepd die for molding, the maintenance of concrete standard constant-temp. and-moisture maintenance is put into each length of time after resting 24 hours, wherein the temperature of concrete standard constant-temp. and-moisture maintenance is 19 ~ 21 DEG C, and relative humidity is 95% ~ 99%.
Above-described embodiment has stronger adaptability and better implementation result, can increase and decrease non-essential technical characteristic according to actual needs, meet the demand of different situations in concrete enforcement.
The test result of above-described embodiment and prior art contrasts as follows:
Operating procedure of the present invention is simple, and prepare at ambient temperature, raw material is common, and consumption is few, is that 2 components are composite; The foamy body that the whipping agent of preparation produces is high, and the granular size that can add 76% mass ratio is the coal gangue of about 5mm.
The expansion ratio of whipping agent prepared by the present invention is 21.3, starts bleeding time 7min, and after 90min, foam sedimentation is apart from 38mm, good with concrete early strength agent consistency.
Gangue foam concrete prepared by the whipping agent using the present invention to prepare, cement consumption is few, cost-saving, and the coal gangue concrete prepared meets coal mine gob filling requirement of strength.
The above; be only the present invention's preferably embodiment, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (1)
1. a preparation method for gangue foam concrete composite foamable agent, is characterized in that, comprises step:
A, take the sodium lauryl sulphate whipping agent of 0.5 ~ 10 weight part and the water of 1000 ~ 3000 weight parts, mix;
B, take the lauryl alcohol suds-stabilizing agent of 0.5 ~ 5 weight part and the water of 1000 ~ 10000 weight parts, mix, pour in the expanding foam solution mixed;
C, calcium chloride, sodium sulfate or trolamine concrete early strength agent with 0.05 ~ 0.6% weight part add in described expanding foam solution.
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| CN201410681489.3A CN104446621A (en) | 2014-11-24 | 2014-11-24 | Method for preparing coal gangue foam concrete composite foaming agent |
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| CN201410681489.3A CN104446621A (en) | 2014-11-24 | 2014-11-24 | Method for preparing coal gangue foam concrete composite foaming agent |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105439489A (en) * | 2015-11-18 | 2016-03-30 | 西北矿冶研究院 | Foaming agent for mining filling |
| CN106588116A (en) * | 2016-12-31 | 2017-04-26 | 南京友西科技股份有限公司 | Nano silicon dioxide/lauryl alcohol modified compound foaming agent and preparation method |
| CN107021667A (en) * | 2017-05-14 | 2017-08-08 | 吴刚 | A kind of preparation method of foam concrete foamer |
| CN110183155A (en) * | 2019-05-21 | 2019-08-30 | 烟台大学 | The foam concrete preparation method utilized based on process hides chrome leather scrap and gangue |
| CN112745058A (en) * | 2021-01-06 | 2021-05-04 | 北京市高强混凝土有限责任公司 | Foaming agent and foam concrete containing same |
| CN113754371A (en) * | 2021-08-30 | 2021-12-07 | 广东盛瑞科技股份有限公司 | Foamed light soil with high stone powder content and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102911674A (en) * | 2012-10-26 | 2013-02-06 | 武汉科技大学 | Stable multilayer-film structural foaming agent and preparation method thereof |
-
2014
- 2014-11-24 CN CN201410681489.3A patent/CN104446621A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102911674A (en) * | 2012-10-26 | 2013-02-06 | 武汉科技大学 | Stable multilayer-film structural foaming agent and preparation method thereof |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105439489A (en) * | 2015-11-18 | 2016-03-30 | 西北矿冶研究院 | Foaming agent for mining filling |
| CN106588116A (en) * | 2016-12-31 | 2017-04-26 | 南京友西科技股份有限公司 | Nano silicon dioxide/lauryl alcohol modified compound foaming agent and preparation method |
| CN107021667A (en) * | 2017-05-14 | 2017-08-08 | 吴刚 | A kind of preparation method of foam concrete foamer |
| CN110183155A (en) * | 2019-05-21 | 2019-08-30 | 烟台大学 | The foam concrete preparation method utilized based on process hides chrome leather scrap and gangue |
| CN110183155B (en) * | 2019-05-21 | 2021-04-30 | 烟台大学 | Foam concrete preparation method based on utilization of tanning chrome-containing leather scraps and coal gangue |
| CN112745058A (en) * | 2021-01-06 | 2021-05-04 | 北京市高强混凝土有限责任公司 | Foaming agent and foam concrete containing same |
| CN113754371A (en) * | 2021-08-30 | 2021-12-07 | 广东盛瑞科技股份有限公司 | Foamed light soil with high stone powder content and preparation method thereof |
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Application publication date: 20150325 |