CN104261757A - Sintering-free lightweight aggregate and preparation method thereof - Google Patents
Sintering-free lightweight aggregate and preparation method thereof Download PDFInfo
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- CN104261757A CN104261757A CN201410457230.0A CN201410457230A CN104261757A CN 104261757 A CN104261757 A CN 104261757A CN 201410457230 A CN201410457230 A CN 201410457230A CN 104261757 A CN104261757 A CN 104261757A
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- portland cement
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Abstract
The invention relates to a sintering-free lightweight aggregate and a preparation method thereof. The preparation method comprises the following steps of weighing ordinary Portland cement, rapid hardening Portland cement, fine sand, hydrogen peroxide, triethanolamine, fatty alcohol polyoxyethylene ether sodium sulfate and water according to a raw material formula, uniformly mixing and then making into granules in the ball-forming plate of a circular-disc granulator; and then curing the granules in an atmosphere of water vapor of which the temperature is 78-82 DEG C so that the granules are expanded; impregnating the cured granules with a polyvinyl alcohol aqueous solution and naturally airing the impregnated granules to obtain concrete lightweight aggregate. Sintering is not needed when the lightweight aggregate is prepared by virtue of the preparation method and the prepared lightweight aggregate has the advantages of low water absorption rate and environmental friendliness.
Description
Technical field
The present invention relates to a kind of non-sintered light skeletal and preparation method thereof, belong to the reinforcement of concrete auxiliary agent technical field.
Background technology
Lightweight aggregate concrete refers to the concrete adopting light skeletal, and its apparent density is not more than 1900kg/m
3.Lightweight aggregate concrete has the advantages such as density is little, good heat preservation performance, shock resistance are good, is applicable to high level and long span building.When lightweight aggregate concrete is applied to industry with covil construction and Other Engineering, dead load can be alleviated, save material usage, improve component conveying and lift efficiency, reduce foundation load and improve building functions etc.Along with the enforcement with building energy conservation relevant policies, lightweight aggregate concrete gains great popularity in construction market.
The light skeletal used in the market mainly contains three major types.1, natural weight aggregate: as float stone, volcanic cinder.2, industrial waste: as lytag, expanded slag pearl.3, artificial light aggregate: as haydites of book structure, leca, pearlstone.The most widely used is artificial light aggregate, and these light skeletals all need through thermal technology's calcination process, and carrying capacity of environment is heavier.And light skeletal water-intake rate is comparatively large, larger on workability impact.The water-intake rate of current lytag is generally about 20%, and leca, haydites of book structure are about 10%.
Summary of the invention
The object of the invention is to provide a kind of non-sintered light skeletal and preparation method thereof.
For achieving the above object, the first technical scheme that the present invention adopts is: a kind of non-sintered light skeletal, and the composition of raw materials of described non-sintered light skeletal comprises the material of following masses percentage;
Ordinary Portland cement 20 ~ 30%;
Quick hardening Portland cement 10 ~ 15%;
Fine sand 25 ~ 35%;
Hydrogen peroxide 5 ~ 10%;
Trolamine 1 ~ 2%;
Polyoxyethylenated alcohol sodium sulfate 1 ~ 2%;
Water 11 ~ 38%.
Preferred technical scheme is: the fineness modulus of described fine sand is 1.5 ~ 2.0.
Preferred technical scheme is: the mass percent concentration concentration of described hydrogen peroxide is 27.5%.
Preferred technical scheme is: the purity of described trolamine is more than or equal to 99%.
Preferred technical scheme is: the purity of described polyoxyethylenated alcohol sodium sulfate is more than or equal to 99%.
For achieving the above object, the first technical scheme that the present invention adopts is: a kind of method preparing non-sintered light skeletal, mix after described ordinary Portland cement, quick hardening Portland cement, fine sand, hydrogen peroxide, trolamine, polyoxyethylenated alcohol sodium sulfate and water being weighed by described composition of raw materials, the pan-pelletizer being then placed in granulating disc makes particle; Next the water vapour atmosphere maintenance described particle being placed in 78 ~ 82 DEG C makes described particle expand; Then flooded by particle polyvinyl alcohol water solution complete for maintenance, namely the particle after dipping obtains concrete light aggregate through natural air drying.
Preferred technical scheme is: the mass percent concentration of described polyvinyl alcohol water solution is 5%; The alcoholysis degree of described polyvinyl alcohol is 99%.
Because technique scheme is used, the present invention compared with prior art has following advantages and effect:
1, method of the present invention is when preparing light skeletal without the need to through oversintering, and it is low that obtained concrete light aggregate has water-intake rate, eco-friendly advantage;
2, natural air drying after aggregate of the present invention dipping, obtain without the need to sintering, water-intake rate about 3% concrete light aggregate.
Embodiment
Below in conjunction with embodiment, the invention will be further described:
Embodiment one: a kind of non-sintered light skeletal and preparation method thereof
A kind of non-sintered light skeletal, the composition of raw materials of described non-sintered light skeletal comprises the material of following masses percentage;
Ordinary Portland cement 20%;
Quick hardening Portland cement 10%;
Fine sand 25%;
Hydrogen peroxide 5%;
Trolamine 1%;
Polyoxyethylenated alcohol sodium sulfate 1%;
Water 38%.
The fineness modulus of described fine sand is 1.5 ~ 2.0.
The mass percent concentration concentration of described hydrogen peroxide is 27.5%.
The purity of described trolamine is 99%.
The purity of described polyoxyethylenated alcohol sodium sulfate is 99%.
Preparation method: a kind of method preparing non-sintered light skeletal, mix after described ordinary Portland cement, quick hardening Portland cement, fine sand, hydrogen peroxide, trolamine, polyoxyethylenated alcohol sodium sulfate and water being weighed by described composition of raw materials, the pan-pelletizer being then placed in granulating disc makes the particle of required particle diameter; Next described particle is placed in the water vapour atmosphere maintenance 10 hours of 80 DEG C, particle expands, and gelling material is solidified and realized gain in strength in maintenance processes.Then particle polyvinyl alcohol water solution complete for maintenance is flooded, the particle after dipping through natural air drying, obtain without the need to sintering, water-intake rate about 3% concrete light aggregate.The mass percent concentration of described polyvinyl alcohol water solution is 5%; The alcoholysis degree of described polyvinyl alcohol is 99%.
Embodiment two: a kind of non-sintered light skeletal and preparation method thereof
A kind of non-sintered light skeletal, the composition of raw materials of described non-sintered light skeletal comprises the material of following masses percentage;
Ordinary Portland cement 30%;
Quick hardening Portland cement 10%;
Fine sand 25%;
Hydrogen peroxide 5%;
Trolamine 2%;
Polyoxyethylenated alcohol sodium sulfate 2%;
Water 26%.
Preparation method is with embodiment one.
Embodiment three: a kind of non-sintered light skeletal and preparation method thereof
A kind of non-sintered light skeletal, the composition of raw materials of described non-sintered light skeletal comprises the material of following masses percentage;
Ordinary Portland cement 25%;
Quick hardening Portland cement 12%;
Fine sand 30%;
Hydrogen peroxide 7%;
Trolamine 1.5%;
Polyoxyethylenated alcohol sodium sulfate 1.5%;
Water 23%.
The fineness modulus of described fine sand is 1.5 ~ 2.0.
The mass percent concentration concentration of described hydrogen peroxide is 27.5%.
The purity of described trolamine is more than or equal to 99.1%.
The purity of described polyoxyethylenated alcohol sodium sulfate is more than or equal to 99.1%.
Above-described embodiment, only for technical conceive of the present invention and feature are described, its object is to person skilled in the art can be understood content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences done according to spirit of the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (7)
1. a non-sintered light skeletal, is characterized in that: the composition of raw materials of described non-sintered light skeletal comprises the material of following masses percentage;
Ordinary Portland cement 20 ~ 30%;
Quick hardening Portland cement 10 ~ 15%;
Fine sand 25 ~ 35%;
Hydrogen peroxide 5 ~ 10%;
Trolamine 1 ~ 2%;
Polyoxyethylenated alcohol sodium sulfate 1 ~ 2%;
Water 11 ~ 38%.
2. non-sintered light skeletal according to claim 1, is characterized in that: the fineness modulus of described fine sand is 1.5 ~ 2.0.
3. non-sintered light skeletal according to claim 1, is characterized in that: the mass percent concentration concentration of described hydrogen peroxide is 27.5%.
4. non-sintered light skeletal according to claim 1, is characterized in that: the purity of described trolamine is more than or equal to 99%.
5. non-sintered light skeletal according to claim 1, is characterized in that: the purity of described polyoxyethylenated alcohol sodium sulfate is more than or equal to 99%.
6. prepare the method for the arbitrary described non-sintered light skeletal of Claims 1 to 5 for one kind, it is characterized in that: mix after described ordinary Portland cement, quick hardening Portland cement, fine sand, hydrogen peroxide, trolamine, polyoxyethylenated alcohol sodium sulfate and water being weighed by described composition of raw materials, the pan-pelletizer being then placed in granulating disc makes particle; Next the water vapour atmosphere maintenance described particle being placed in 78 ~ 82 DEG C makes described particle expand; Then flooded by particle polyvinyl alcohol water solution complete for maintenance, namely the particle after dipping obtains concrete light aggregate through natural air drying.
7. method according to claim 6, is characterized in that: the mass percent concentration of described polyvinyl alcohol water solution is 5%; The alcoholysis degree of described polyvinyl alcohol is 99%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410457230.0A CN104261757A (en) | 2014-09-10 | 2014-09-10 | Sintering-free lightweight aggregate and preparation method thereof |
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| CN201410457230.0A CN104261757A (en) | 2014-09-10 | 2014-09-10 | Sintering-free lightweight aggregate and preparation method thereof |
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| CN104261757A true CN104261757A (en) | 2015-01-07 |
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| CN201410457230.0A Pending CN104261757A (en) | 2014-09-10 | 2014-09-10 | Sintering-free lightweight aggregate and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104803622A (en) * | 2015-04-22 | 2015-07-29 | 江苏名和集团有限公司 | Sintering-free lightweight aggregate and preparation method thereof |
| WO2022142137A1 (en) * | 2020-12-29 | 2022-07-07 | 山东大学 | Red mud-based cementing material, red mud-based lightweight aggregate, red mud-based lightweight aggregate concrete and preparation method therefor |
| CN115093179A (en) * | 2022-06-22 | 2022-09-23 | 南京理工大学 | Method for preparing high-strength artificial aggregate by using molybdenum tailings |
Citations (6)
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| JPH01219047A (en) * | 1988-02-29 | 1989-09-01 | Nippon Cement Co Ltd | Lightweight aggregate for plastering |
| JP2002128574A (en) * | 2000-10-24 | 2002-05-09 | Taiheiyo Cement Corp | Lightweight concrete |
| CN101786834A (en) * | 2010-01-25 | 2010-07-28 | 重庆鹏方路面工程技术研究院有限公司 | Porous salt storage aggregate and preparation method thereof |
| CN102674730A (en) * | 2012-06-06 | 2012-09-19 | 江苏名和集团有限公司 | Surface treating agent of recycled aggregate and preparation method thereof |
| CN102898084A (en) * | 2012-10-19 | 2013-01-30 | 江苏博特新材料有限公司 | High-intensity high-toughness coarse aggregate, preparation method thereof and concrete prepared from high-intensity high-toughness coarse aggregate |
| CN103467025A (en) * | 2013-09-11 | 2013-12-25 | 马鞍山十七冶工程科技有限责任公司 | Preparation method and preparation device of lightweight aggregate |
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2014
- 2014-09-10 CN CN201410457230.0A patent/CN104261757A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH01219047A (en) * | 1988-02-29 | 1989-09-01 | Nippon Cement Co Ltd | Lightweight aggregate for plastering |
| JP2002128574A (en) * | 2000-10-24 | 2002-05-09 | Taiheiyo Cement Corp | Lightweight concrete |
| CN101786834A (en) * | 2010-01-25 | 2010-07-28 | 重庆鹏方路面工程技术研究院有限公司 | Porous salt storage aggregate and preparation method thereof |
| CN102674730A (en) * | 2012-06-06 | 2012-09-19 | 江苏名和集团有限公司 | Surface treating agent of recycled aggregate and preparation method thereof |
| CN102898084A (en) * | 2012-10-19 | 2013-01-30 | 江苏博特新材料有限公司 | High-intensity high-toughness coarse aggregate, preparation method thereof and concrete prepared from high-intensity high-toughness coarse aggregate |
| CN103467025A (en) * | 2013-09-11 | 2013-12-25 | 马鞍山十七冶工程科技有限责任公司 | Preparation method and preparation device of lightweight aggregate |
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| 张潞: "不同强化条件下的再生骨料强化探讨", 《煤炭技术》, vol. 31, no. 1, 31 January 2012 (2012-01-31) * |
| 杨宁等: "再生骨料强化技术研究", 《新型建筑材料》, no. 3, 31 March 2011 (2011-03-31) * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104803622A (en) * | 2015-04-22 | 2015-07-29 | 江苏名和集团有限公司 | Sintering-free lightweight aggregate and preparation method thereof |
| WO2022142137A1 (en) * | 2020-12-29 | 2022-07-07 | 山东大学 | Red mud-based cementing material, red mud-based lightweight aggregate, red mud-based lightweight aggregate concrete and preparation method therefor |
| CN115093179A (en) * | 2022-06-22 | 2022-09-23 | 南京理工大学 | Method for preparing high-strength artificial aggregate by using molybdenum tailings |
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Application publication date: 20150107 |
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