CN102745929A - Regenerated mineral admixture and application thereof - Google Patents
Regenerated mineral admixture and application thereof Download PDFInfo
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- CN102745929A CN102745929A CN2012102510071A CN201210251007A CN102745929A CN 102745929 A CN102745929 A CN 102745929A CN 2012102510071 A CN2012102510071 A CN 2012102510071A CN 201210251007 A CN201210251007 A CN 201210251007A CN 102745929 A CN102745929 A CN 102745929A
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- mineral admixture
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- glass
- admixture
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Curing Cements, Concrete, And Artificial Stone (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a regenerated mineral admixture and the application thereof. The regenerated mineral admixture is prepared by steps: (1) collecting waste glass from construction wastes and domestic garbage, and removing impurities from the waste glass; (2) using crushing equipment for crushing the waste glass with the impurities removed to obtain waste glass particles with the particle diameter not larger than 5mm; and (3) using grinding equipment for grinding the waste glass particles to obtain levigated glass powder with the Blaine specific surface area larger than 600m<2>/kg, namely the regenerated mineral admixture is obtained. The regenerated mineral admixture can be used in concrete to replace part of cement. The regenerated mineral admixture can be used for preparation of concrete of different strength grades, the slump constant of concrete mixture can be increased by 6%-18%, the chloride ion diffusion coefficient can be maximally decreased by 10%-15%, and alkali-aggregate reactive expansion damages can be avoided.
Description
Technical field
The invention belongs to building material technical field, be specifically related to a kind of regeneration mineral admixture and application thereof.
Background technology
Along with the development of industry and standard of living, the scrap glass of generation is more and more, not only takies a large amount of processing lands used, and contaminate environment, increases carrying capacity of environment.The statistic data of United Nations shows that 7% is scrap glass in the global solid slag.American-European developed country scrap glass amount accounts for 4%～8% of municipal wastes total amount, about 1,280 ten thousand tons of U.S.'s output scrap glass in 2005, but have only 2,750,000 tons to obtain recycling.The annual output scrap glass of China is about 7,000,000 tons, and Hong Kong produces about 300 tons of scrap glasses every day, and about 98% is to handle with garbage loading embeading.And the landfill disposal expense is higher, 1 ton of scrap glass of every processing in New York, and the expense that salvage material portion collects is up to 45 dollars.And owing to reasons such as pollution, cost and color mix, not all recovery glass can both be used to produce new glass.A large amount of scrap glasses can not be reused, and are the huge waste of social resources.
Salvage material is fabulous in the Application in Civil Engineering prospect: it is wide that consumption is big, quality requirements is low, engineering distributes.And existing a lot of successful Application models, like flyash, slag etc., these rejected materials had been to handle a difficult problem once, but can improve concrete performance because of it now, became valuable commodity.
In all glass, soda-lime glass is used the widest, accounts for 80%.Contain the 73wt.%SiO that has an appointment in the soda-lime glass
2, 13wt.%Na
2O and 10wt.%CaO.Glass is unbodied, and contains a large amount of silicon and calcium, in theory as long as grinding to certain fineness, will possess pozzolanic activity, even gelling, in concrete, can be used as mineral admixture.
Summary of the invention
The purpose of this invention is to provide a kind of high reactivity regeneration mineral admixture and application thereof that utilizes scrap glass to obtain.
In order to achieve the above object, the present invention adopts following technical scheme:
One, a kind of regeneration mineral admixture, adopt following method to prepare:
(1) removes foreign material in the scrap glass; Scrap glass can be collected from building waste and domestic refuse;
(2) utilize scrap glass after foreign material are removed in the disintegrating apparatus fragmentation, obtain the scrap glass particle that particle diameter is not more than 5mm;
(3) utilize milling equipment grinding scrap glass particle, obtain Blain specific surface greater than 600m
2The levigate glass powder of/kg, that is, and the regeneration mineral admixture.
The above-mentioned foreign material of removing in the scrap glass are the methods that adopt letter sorting and washing.
Two, the gelling material in the above-mentioned regeneration mineral admixture useful as concrete.
The mass ratio of the regeneration mineral admixture of admixture and cement is 1 in the concrete: (1～9), the preferable range of the mass ratio of regeneration mineral admixture and cement is 1: (1～2.3).
Because glass contains a large amount of soft silicas, has very high basic active, the glass that therefore is used for concrete can bring alkali-pasc reaction risk, and then brings destruction to concrete structure.Mineral admixture is the very thin levigate glass powder of particle but the present invention regenerates, and can be evenly distributed on when using it in the concrete in the cement-based material, and pozzolanic reaction can take place levigate glass powder, thereby concrete structure can not destroy Yin Jian – pasc reaction.
The present invention utilizes the levigate glass powder of scrap glass processing, and the levigate glass powder of gained can be used as a kind of novel regeneration mineral admixture and is applied in the concrete, and the present invention can produce following beneficial effect:
1, a kind of recycling approach of scrap glass is provided, has avoided the waste of scrap glass, the stacking that has reduced scrap glass is taken up an area of, and disposes expense but also can save high scrap glass;
2, the present invention's mineral admixture instead part cement of regenerating is used for concrete, has reduced concrete production cost, has reduced the consumption of natural materials, can also reach the purpose of energy-saving and emission-reduction, meets the strategy of sustainable development of China's material of construction; And, the present invention's mineral admixture of regenerating is used for concrete not only to not influence of concrete performance, can also improve concrete workability and intensity;
3, the regenerate acquisition methods of mineral admixture of the present invention is simple and easy to do, with low cost, is fit to scale of mass production.
Embodiment
The present invention's mineral admixture of regenerating can be widely used in the production concrete, can use it for the production concrete according to following component:
Sand, stone aggregate 100 weight parts,
Cement 15～30 weight parts,
Regeneration mineral admixture 3～15 weight parts,
Silicon ash 0～3 weight part,
Water reducer 0.20～0.45 weight part,
Water 7.5～12 weight parts.
Adopt above-mentioned proportioning can prepare C40-C80 strength grade concrete.The cement of regeneration mineral admixture maximum alternative 30-50% has utilized the regenerate concrete of mineral admixture of the present invention can not only guarantee that concrete intensity meets design requirement, and has had better workability, also improves concrete impermeability simultaneously.
For a better understanding of the present invention, further illustrate content of the present invention, but the content of the present invention's protection not only is confined to following embodiment below in conjunction with embodiment.
Embodiment 1
The mineral admixture of preparation regeneration according to the following steps:
(1) from building waste, collect broken window white glass, the scrap glass that the surface is stained with adhesive glue is removed in letter sorting, removes the dust and other impurities on scrap glass surface again with the method for washing;
(2) utilize the discarded window white glass of broken step (1) gained of PE60 * 100 model jaw crushers, discharging-material size is 3～10mm, after screening, keeps particle diameter and is not more than the starting material of the scrap glass particle of 5mm as the regeneration mineral admixture;
(3) utilize the starting material 1.5h of RK/QM-Ф 480 * 600 model ball mill grindings regeneration mineral admixture, obtaining Blain specific surface is 647m
2The levigate glass powder of/kg, that is, and regeneration mineral admixture finished product.
14 days mortar bars rapid detection rate of expansion according to " concrete for hydraulic structure aggregate tentative specification DL/T 5151-2001 " test present embodiment gained regeneration mineral admixture are 0.368%, prove that the used glass of present embodiment has basic active.
The application of present embodiment gained regeneration mineral admixture:
Proportioning preparation strength grade by shown in the table 1 is the concrete of C40, and used cement is that strength grade is 42.5 ordinary Portland cement; Sand is natural river sand; Stone is that particle diameter is the artificial rubble of 5-30mm; Water reducer is the ADVA152 high-efficiency water-reducing agent of poly-carboxylic acid of Grace company, 40% solid content; Water is tap water; The regeneration mineral admixture is present embodiment gained regeneration mineral admixture.
Table 1C40 mix proportion
According to proportioning shown in the table 1; The slump and 28 days ultimate compression strength of test concrete mix; And adopt concrete chloride ion spread coefficient rvt (RCM method) to test the chloride diffusion coefficient of concrete mix, and this concrete alkali-pasc reaction characteristic of check.For whether the check concrete alkali-pasc reaction can take place destroy; Can test with reference to " concrete for hydraulic structure aggregate tentative specification DL/T5151-2001 "; Be specially: add NaOH and make cement contain the alkali equivalent to reach 1.25%; When room temperature is 20 ± 2 ℃, mix and stir shaping test piece according to the proportioning in the table 1, sample dimensions is 275 * 75 * 75mm, and connecting die trial behind the specimen molding, to send into room temperature together be maintenance form removal after 24 ± 4 hours in 20 ± 1 ℃, the maintaining box of relative humidity more than 95%; Putting into room temperature to test specimen then is 38 ± 2 ℃ curing room maintenance, tests the test specimen length variations of 1 age period.Above-mentioned all testing experiment results see table 2; The result shows; Compare with the comparison sample 1 of not mixing the regeneration mineral admixture, after the admixture embodiment 1 gained regeneration mineral admixture, the concrete mix slump has improved 6%-18%; Concrete crushing strength all satisfied the design requirements of C40 strength grade in 28 days; The chloride diffusion coefficient maximum decreased by 10% in 28 days, and the 1 age period alkali-pasc reaction rate of expansion of all test specimens all is lower than 0.040%, and the adding of the mineral admixture of promptly regenerating can not produce alkali-pasc reaction expansion damage to concrete.
The concrete The performance test results of table 2 C40
Embodiment 2
The mineral admixture of preparation regeneration according to the following steps:
(1) from domestic refuse, collects discarded Beer Bottle, scrub and remove the papery trade mark that the Beer Bottle surface is stained with, remove the foreign material such as remaining drinks in the bottle with the method for washing again;
(2) utilize PC400 * 300 model hammer crushing crusher machine step (1) gained beer bottle glass, discharging-material size is 5～10mm, after screening, keeps particle diameter and is not more than the starting material of the scrap glass particle of 5mm as the regeneration mineral admixture;
(3) utilize the good planetary ball mill grinding regeneration of DQM-2 type mineral admixture starting material 2h, obtaining Blain specific surface is 973m
2The levigate glass powder of/kg, that is, and regeneration mineral admixture finished product.
14 days mortar bars rapid detection rate of expansion according to " concrete for hydraulic structure aggregate tentative specification DL/T 5151-2001 " test present embodiment gained regeneration mineral admixture are 0.415%, prove that the used glass of present embodiment has basic active.
The application of present embodiment gained regeneration mineral admixture:
Proportioning preparation strength grade by shown in the table 3 is the concrete of C60, and used cement is that strength grade is 42.5 silicate cement; Sand is natural river sand; Stone is that particle diameter is the artificial rubble of 5-30mm; Water reducer is the SP1 of a Ma Bei company high-efficiency water-reducing agent of poly-carboxylic acid, 27% solid content; Water is tap water; The regeneration mineral admixture is present embodiment gained regeneration mineral admixture.
Press proportioning shown in the table 3; The slump and 28 days ultimate compression strength of test concrete mix; And adopt concrete chloride ion spread coefficient rvt (RCM method) to test the chloride diffusion coefficient of concrete mix, and this concrete alkali-pasc reaction characteristic of check.For whether the check concrete alkali-pasc reaction can take place destroy; Can test with reference to " concrete for hydraulic structure aggregate tentative specification DL/T5151-2001 "; Be specially: add NaOH and make cement contain the alkali equivalent to reach 1.25%; Is to mix and stir shaping test piece under 20 ± 2 ℃ according to the proportioning in the table 3 in room temperature, and sample dimensions is 275 * 75 * 75mm, and connecting die trial behind the specimen molding, to send into room temperature together be maintenance form removal after 24 ± 4 hours in 20 ± 1 ℃, the maintaining box of relative humidity more than 95%; Putting into room temperature to test specimen then is 38 ± 2 ℃ curing room maintenance, tests the test specimen length variations of 1 age period.Above-mentioned all testing experiment results see table 4; The result shows; Compare with the comparison sample 2 of not mixing the regeneration mineral admixture, after the admixture present embodiment gained regeneration mineral admixture, the concrete mix slump has improved 6%-18%; Concrete crushing strength all satisfied the design requirements of C60 strength grade in 28 days; The chloride diffusion coefficient maximum decreased by 10% in 28 days, and the 1 age period alkali-pasc reaction rate of expansion of all test specimens all is lower than 0.040%, and the adding of the mineral admixture of promptly regenerating can not produce alkali-pasc reaction expansion damage to concrete.
Table 3C60 mix proportion
The concrete The performance test results of table 4C60
Embodiment 3
The mineral admixture of preparation regeneration according to the following steps:
(1) from domestic refuse, collects discarded Beer Bottle, scrub and remove the papery trade mark that the Beer Bottle surface is stained with, remove the foreign material such as remaining drinks in the bottle with the method for washing again;
(2) utilize broken step (1) the gained beer bottle glass of PE 60 * 100 model jaw crushers, discharging-material size is 3～10mm, after screening, keeps particle diameter and is not more than the starting material of the scrap glass particle of 5mm as the regeneration mineral admixture;
(3) utilize the good planetary ball mill grinding regeneration of DQM-2 type mineral admixture starting material 2h, obtaining Blain specific surface is 857m
2The levigate glass powder of/kg, that is, and regeneration mineral admixture finished product.
14 days mortar bars rapid detection rate of expansion according to " concrete for hydraulic structure aggregate tentative specification DL/T 5151-2001 " test present embodiment gained regeneration mineral admixture are 0.439%, prove that the used glass of present embodiment has basic active.
The application of present embodiment gained regeneration mineral admixture:
Proportioning preparation strength grade by shown in the table 5 is the concrete of C80, and used cement is that strength grade is 42.5 silicate cement; Sand is natural river sand; The specific surface area of silicon ash is 16000m
2/ kg, wherein SiO
2Mass content be 92%; Stone is that particle diameter is the artificial rubble of 5-30mm; Water reducer is the 20HE-1 of a Sika company high-efficiency water-reducing agent of poly-carboxylic acid, 40% solid content; Water is tap water; The regeneration mineral admixture is present embodiment gained regeneration mineral admixture.
According to table 5 proportioning; The slump and 28 days ultimate compression strength of test concrete mix; And adopt concrete chloride ion spread coefficient rvt (RCM method) to test the chloride diffusion coefficient of concrete mix, and this concrete alkali-pasc reaction characteristic of check.For whether the check concrete alkali-pasc reaction can take place destroy; Can be with reference to " concrete for hydraulic structure aggregate tentative specification DL/T5151-2001 "; Be specially: add NaOH and make cement contain the alkali equivalent to reach 1.25%; Is 20 ± 2 ℃ the shaping test piece that mixes and stirs according to the proportioning in the table 5 in room temperature, and sample dimensions is 275 * 75 * 75mm, and connecting die trial behind the specimen molding, to send into room temperature together be maintenance form removal after 24 ± 4 hours in 20 ± 1 ℃, the maintaining box of relative humidity more than 95%; Putting into room temperature to test specimen then is 38 ± 2 ℃ curing room maintenance, tests the test specimen length variations of 1 age period.Above-mentioned all testing experiment results see table 6; The result shows; Compare with the comparison sample 3 of not mixing the regeneration mineral admixture, after the admixture embodiment 3 gained regeneration mineral admixture, the concrete mix slump has improved 6%-18%; Concrete crushing strength all satisfied the design requirements of C80 strength grade in 28 days; The chloride diffusion coefficient maximum decreased by 15% in 28 days, and 1 age period alkali rate of expansion of all test specimens all is lower than 0.040%, and the adding of the mineral admixture of promptly regenerating can not produce alkali-pasc reaction expansion damage to concrete.
Table 5C80 mix proportion
The concrete The performance test results of table 6C80
Claims (5)
1. a regeneration mineral admixture is characterized in that, adopts following method preparation:
(1) removes foreign material in the scrap glass;
(2) utilize scrap glass after foreign material are removed in the disintegrating apparatus fragmentation, obtain the scrap glass particle that particle diameter is not more than 5mm;
(3) utilize milling equipment grinding scrap glass particle, obtain Blain specific surface greater than 600m
2The levigate glass powder of/kg, that is, and the regeneration mineral admixture.
2. regeneration mineral admixture according to claim 1 is characterized in that:
The described foreign material of removing in the scrap glass are the methods that adopt letter sorting and washing.
3. regeneration mineral admixture according to claim 1 is as the application of concrete gel material.
4. regeneration mineral admixture according to claim 3 is characterized in that as the application of concrete gel material:
The mass ratio of the regeneration mineral admixture of admixture and cement is 1 in the concrete: (1～9).
5. regeneration mineral admixture according to claim 4 is characterized in that as the application of concrete gel material:
The mass ratio of the regeneration mineral admixture of admixture and cement is 1 in the concrete: (1～2.3).
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103121803A (en) * | 2013-03-06 | 2013-05-29 | 于岩 | Regenerated active admixture for concrete and preparation method thereof |
| CN103570302A (en) * | 2013-11-15 | 2014-02-12 | 北京新奥混凝土集团有限公司 | Concrete doped with waste glass |
| CN104987003A (en) * | 2015-07-21 | 2015-10-21 | 桂林理工大学 | Method for preparing concrete by renewable admixture |
| CN105130291A (en) * | 2015-07-21 | 2015-12-09 | 桂林理工大学 | Preparation method of active glass powder mixture material |
| CN105236786A (en) * | 2015-08-31 | 2016-01-13 | 东南大学 | Regenerated active blended material and preparation method of same |
| CN105492405A (en) * | 2013-06-28 | 2016-04-13 | 恩威罗森公司 | Hydraulic mortar comprising glass |
| CN107746198A (en) * | 2017-11-10 | 2018-03-02 | 中建西部建设贵州有限公司 | A kind of scrap glass powder composite blend and preparation method thereof |
| CN108101437A (en) * | 2016-11-25 | 2018-06-01 | 济南大学 | A kind of lightweight concrete for plant growth suitable for wet land protection engineering |
| CN112645678A (en) * | 2020-12-24 | 2021-04-13 | 深圳市华威环保建材有限公司 | Building waste environment-friendly recycled brick and preparation method thereof |
| CN114455877A (en) * | 2022-02-11 | 2022-05-10 | 陕西睿智环保建材有限公司 | Composite silicate material and preparation method and application thereof |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103121803A (en) * | 2013-03-06 | 2013-05-29 | 于岩 | Regenerated active admixture for concrete and preparation method thereof |
| CN105492405A (en) * | 2013-06-28 | 2016-04-13 | 恩威罗森公司 | Hydraulic mortar comprising glass |
| CN103570302B (en) * | 2013-11-15 | 2015-10-28 | 北京新奥混凝土集团有限公司 | A kind of concrete mixing discarded glass |
| CN103570302A (en) * | 2013-11-15 | 2014-02-12 | 北京新奥混凝土集团有限公司 | Concrete doped with waste glass |
| CN104987003A (en) * | 2015-07-21 | 2015-10-21 | 桂林理工大学 | Method for preparing concrete by renewable admixture |
| CN105130291A (en) * | 2015-07-21 | 2015-12-09 | 桂林理工大学 | Preparation method of active glass powder mixture material |
| CN105236786A (en) * | 2015-08-31 | 2016-01-13 | 东南大学 | Regenerated active blended material and preparation method of same |
| CN105236786B (en) * | 2015-08-31 | 2018-07-27 | 东南大学 | A kind of regeneration activity admixture and preparation method thereof |
| CN108101437A (en) * | 2016-11-25 | 2018-06-01 | 济南大学 | A kind of lightweight concrete for plant growth suitable for wet land protection engineering |
| CN107746198A (en) * | 2017-11-10 | 2018-03-02 | 中建西部建设贵州有限公司 | A kind of scrap glass powder composite blend and preparation method thereof |
| CN112645678A (en) * | 2020-12-24 | 2021-04-13 | 深圳市华威环保建材有限公司 | Building waste environment-friendly recycled brick and preparation method thereof |
| CN114455877A (en) * | 2022-02-11 | 2022-05-10 | 陕西睿智环保建材有限公司 | Composite silicate material and preparation method and application thereof |
| CN114455877B (en) * | 2022-02-11 | 2022-09-09 | 陕西睿智环保建材有限公司 | Composite silicate material and preparation method and application thereof |
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Application publication date: 20121024 |