CN104591573A - Waste brick superfine regenerated active micro-powder and preparation method thereof - Google Patents
Waste brick superfine regenerated active micro-powder and preparation method thereof Download PDFInfo
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- CN104591573A CN104591573A CN201510044758.XA CN201510044758A CN104591573A CN 104591573 A CN104591573 A CN 104591573A CN 201510044758 A CN201510044758 A CN 201510044758A CN 104591573 A CN104591573 A CN 104591573A
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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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Abstract
The invention discloses a waste brick superfine regenerated active micro-powder and a preparation method thereof. The micro-powder has a specific surface area of more than 600m<2>/kg and a 28d activity index of more than 70%, and can be used as a mortar and concrete admixture. The micro-powder is prepared by taking waste bricks, which have grain diameters of about 3-10cm and are selected from the building waste generated during a house building removal and construction process, as raw materials, and processing through grinding and composite chemical excitation processes. According to the micro-powder and the preparation method disclosed by the invention, superfine grinding and efficient activation for the waste bricks are realized, and a utilization mode with high additional value is provided for the waste bricks.
Description
Technical field
The invention belongs to building material technical field, be specifically related to a kind of brick that gives up that utilizes and prepare ultra-fine regeneration activity micro mist and preparation method thereof.
Background technology
Along with the continuous quickening of urbanization process, generation and the quantity discharged of urban building waste are growing.It is quite large that urban building waste accounts for municipal solid wastes proportion, is about 30% ~ 40% of city solid waste total amount.Adopt air storage or land-fill method to dispose, take big area on the one hand and plough, great negative impact can be caused to vegetation, HUMAN HEALTH, human settlement on the other hand, cause the destruction of ecotope.Therefore, building waste safe disposal and comprehensive utilization are subject to people's attention day by day.
The current recycling approach of current building waste is very single, waste concrete wherein can be made into regeneration aggregate for the production of regeneration concrete, regeneration mortar, regeneration materials for wall etc., and waste and old fragment of brick, because hole is many, water suction large, is unwell to and prepares regeneration aggregate and cannot utilize in building waste.Survey data shows: the silicon in waste and old fragment of brick, aluminium mineral composition have pozzolanic activity, through levigate, excite after have and Ca (OH)
2secondary reaction forms the ability of CSH gel.Therefore utilize waste and old fragment of brick to prepare regenerative micro powder, as hydrated cementitious embryos and continuation aquation formation jel product, there is practical significance.By preparation method of the present invention, obtain the ultra-fine regeneration activity micro mist with high added value, flyash can be substituted as mortar, concrete admixture, to the regeneration of waste and old fragment of brick, there is important development meaning.
Summary of the invention
The object of the invention is the recycling bottleneck in order to solve waste and old fragment of brick, a kind of bigger serface, the ultra-fine regeneration activity micro mist of highly active useless brick and preparation method thereof are provided.
Object of the present invention is achieved through the following technical solutions.
A preparation method for the ultra-fine regeneration activity micro mist of useless brick, comprises the following steps:
(1) particle that particle diameter is about 0 ~ 3mm is broken into after being dried by useless brick; Described useless brick tears down and build in the building waste produced process from building construction to select, and its grain diameter is about 3-10cm;
(2) granular powder of the 0 ~ 3mm obtained in step (1) being milled to its specific surface area is 600-650m
2/ kg, size-grade distribution meso-position radius D50 are 10-15 μm, D90 is 30-40 μm;
(3) the gained brick powder that gives up adds the compound activator be made up of 0wt%-40wt% unslaked lime, 0wt%-60wt% half water desulfurated plaster and 0wt%-40wt% bis-water desulfurated plaster, fully obtains ultra-fine regeneration activity micro mist after mixing.
The weight ratio that compound activator described in step (3) accounts for useless brick powder is 1% ~ 5%.
The ultra-fine regeneration activity micro mist of this useless brick can be used as mortar or concrete admixture, for the preparation of cement mortar.During addition content 30%, within 28 days, activity index reaches more than 70%.
The compound activator provided in the present invention plays activation to useless brick powder, can obtain active good mortar, concrete admixture thus, can realize the high value added utilization of waste and old fragment of brick thus.After mixing concrete admixture provided by the invention (incorporation reaches 30%), its 28d activity index reaches 70% ~ 75%, meet II level flyash requirement in GB/T 1596-2005 " flyash in cement and concrete ", modified effect is remarkable.Utilize the ultra-fine regeneration activity micro mist of the present invention to substitute fly ash aggregate, reduce cement consumption, realize the target of energy-saving and emission-reduction.Present invention achieves the efficient activation of waste and old fragment of brick, for waste and old fragment of brick provides a kind of high value added utilization mode.
Embodiment
Embodiment 1
Be broken into the particle of 0 ~ 3mm after being dried by waste and old fragment of brick, grinding 15-30 minute, prepares the ultra-fine regeneration activity micro mist of useless brick after sufficiently mixing after adding compound activator.Compound activator volume is 2% of useless brick powder quality, and the content of unslaked lime wherein, half water desulfurated plaster and two water desulfurated plasters is respectively 25wt%, 50wt% and 25wt%.
The specific surface area of the ultra-fine regeneration activity micro mist of the useless brick prepared thus reaches 610m
2/ kg, size-grade distribution meso-position radius D50 is 14 μm, and D90 is 31 μm.
Ultra-fine for useless brick regeneration activity micro mist is mixed (incorporation is 30%) in cement mortar as concrete admixture, measures concrete admixture activity index with reference to GB/T 1596-2005 " flyash in cement and concrete ".Table 1 contrasts with the activity index of not mixing compound activator for mixing compound activator concrete admixture, as seen from table, concrete admixture 7d, 28d activity index of not mixing compound activator distinguishes 64% and 68%, and after mixing compound activator concrete admixture, 7d, 28d activity index distinguishes 72% and 75%.7d activity index improves 13%, 28d activity index for improve 10%.
Compound activator concrete admixture activity index simultaneous test mixed by table 1
Embodiment 2
Be broken into the particle of 0 ~ 3mm after being dried by waste and old fragment of brick, grinding 15-30 minute, prepares the ultra-fine regeneration activity micro mist of useless brick after sufficiently mixing after adding compound activator.Compound activator volume is 2.5% of useless brick powder quality, and the content of unslaked lime wherein, half water desulfurated plaster and two water desulfurated plasters is respectively 40wt%, 20wt% and 40wt%.
The specific surface area of the ultra-fine regeneration activity micro mist of the useless brick prepared thus reaches 605m
2/ kg, size-grade distribution meso-position radius D50 is 19 μm, and D90 is 40 μm.
Ultra-fine for useless brick regeneration activity micro mist is mixed (incorporation is 30%) in cement mortar as concrete admixture, measures concrete admixture activity index with reference to GB/T 1596-2005 " flyash in cement and concrete ".Table 2 contrasts with the activity index of not mixing compound activator for mixing compound activator concrete admixture, as seen from table, concrete admixture 7d, 28d activity index of not mixing compound activator distinguishes 64% and 68%, and after mixing compound activator concrete admixture, 7d, 28d activity index distinguishes 64% and 70%.7d activity index improves 0%, 28d activity index for improve 3%.
Compound activator concrete admixture activity index simultaneous test mixed by table 2
Claims (4)
1. a preparation method for the ultra-fine regeneration activity micro mist of useless brick, is characterized in that, comprise the following steps:
(1) particle that particle diameter is about 0 ~ 3mm is broken into after being dried by useless brick; Described useless brick tears down and build in the building waste produced process from building construction to select, and its grain diameter is about 3-10cm;
(2) granular powder of the 0 ~ 3mm obtained in step (1) being milled to its specific surface area is 600-650m
2/ kg, size-grade distribution meso-position radius D50 are 10-15 μm, D90 is 30-40 μm;
(3) the gained brick powder that gives up adds the compound activator be made up of 0wt%-40wt% unslaked lime, 0wt%-60wt% half water desulfurated plaster and 0wt%-40wt% bis-water desulfurated plaster, fully obtains ultra-fine regeneration activity micro mist after mixing.
2. the preparation method of the useless ultra-fine regeneration activity micro mist of brick described in claim 1, it is characterized in that, the weight ratio that the compound activator described in step (3) accounts for useless brick powder is 1% ~ 5%.
3. the ultra-fine regeneration activity micro mist of useless brick, is characterized in that, by the method preparation described in any one of claim 1-2.
4. described in claim 3, the useless ultra-fine regeneration activity micro mist of brick is used as mortar or concrete admixture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510044758.XA CN104591573A (en) | 2015-01-28 | 2015-01-28 | Waste brick superfine regenerated active micro-powder and preparation method thereof |
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| CN201510044758.XA CN104591573A (en) | 2015-01-28 | 2015-01-28 | Waste brick superfine regenerated active micro-powder and preparation method thereof |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105384374A (en) * | 2015-09-15 | 2016-03-09 | 上海市建筑科学研究院 | Green compound admixture prepared by using construction waste recycled fine powder |
| CN105645804A (en) * | 2015-12-29 | 2016-06-08 | 中建商品混凝土有限公司 | Composite powder for cement concrete |
| CN106431124A (en) * | 2016-08-08 | 2017-02-22 | 厦门宏鹭升建筑新材料有限责任公司 | Water-retention water-water-permeable concrete utilizing construction waste and preparation method of water-retention water-permeable concrete |
| CN106915913A (en) * | 2017-02-21 | 2017-07-04 | 上海市建筑科学研究院 | Composite exciting agent and its application prepared by a kind of utilization industrial residue |
| CN110590295A (en) * | 2019-10-29 | 2019-12-20 | 山东中岩建材科技有限公司 | Steam-cured concrete for CRTS III type ballastless track slab and preparation method thereof |
| CN111153617A (en) * | 2020-01-07 | 2020-05-15 | 四川联绿强环保科技有限公司 | Regenerated composite admixture utilizing construction waste and preparation method thereof |
| CN111205021A (en) * | 2020-01-13 | 2020-05-29 | 四川大学 | Building waste regenerated composite admixture base polymer concrete |
| CN111606637A (en) * | 2020-05-29 | 2020-09-01 | 台州东部建材科技有限公司 | Excellent-performance sleeve grouting material for steel bar connection |
| CN112062507A (en) * | 2020-09-14 | 2020-12-11 | 北京新奥混凝土集团有限公司 | Concrete containing recycled waste brick fine aggregate |
| CN112159178A (en) * | 2020-10-12 | 2021-01-01 | 北京联绿技术集团有限公司 | Concrete containing waste brick powder and fly ash |
| CN112174613A (en) * | 2020-10-12 | 2021-01-05 | 北京新奥混凝土集团有限公司 | Concrete containing waste brick powder |
| CN113636768A (en) * | 2021-07-17 | 2021-11-12 | 北京城建华晟交通建设有限公司 | Excited clay brick micro powder and preparation method thereof, cementing material and regenerated brick |
| CN114835415A (en) * | 2022-03-25 | 2022-08-02 | 洛阳绿筑建筑材料有限公司 | Preparation method of silicon-aluminum-based gel material, silicon-aluminum-based gel material and application thereof |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105384374A (en) * | 2015-09-15 | 2016-03-09 | 上海市建筑科学研究院 | Green compound admixture prepared by using construction waste recycled fine powder |
| CN105645804A (en) * | 2015-12-29 | 2016-06-08 | 中建商品混凝土有限公司 | Composite powder for cement concrete |
| CN106431124A (en) * | 2016-08-08 | 2017-02-22 | 厦门宏鹭升建筑新材料有限责任公司 | Water-retention water-water-permeable concrete utilizing construction waste and preparation method of water-retention water-permeable concrete |
| CN106431124B (en) * | 2016-08-08 | 2020-03-24 | 厦门宏鹭升建筑新材料有限责任公司 | Water-retaining water-permeable concrete prepared from construction waste and preparation method thereof |
| CN106915913A (en) * | 2017-02-21 | 2017-07-04 | 上海市建筑科学研究院 | Composite exciting agent and its application prepared by a kind of utilization industrial residue |
| CN110590295A (en) * | 2019-10-29 | 2019-12-20 | 山东中岩建材科技有限公司 | Steam-cured concrete for CRTS III type ballastless track slab and preparation method thereof |
| CN111153617B (en) * | 2020-01-07 | 2022-02-11 | 四川联绿强环保科技有限公司 | Regenerated composite admixture utilizing construction waste and preparation method thereof |
| CN111153617A (en) * | 2020-01-07 | 2020-05-15 | 四川联绿强环保科技有限公司 | Regenerated composite admixture utilizing construction waste and preparation method thereof |
| CN111205021A (en) * | 2020-01-13 | 2020-05-29 | 四川大学 | Building waste regenerated composite admixture base polymer concrete |
| CN111606637A (en) * | 2020-05-29 | 2020-09-01 | 台州东部建材科技有限公司 | Excellent-performance sleeve grouting material for steel bar connection |
| CN111606637B (en) * | 2020-05-29 | 2022-02-15 | 台州东部建材科技有限公司 | Excellent-performance sleeve grouting material for steel bar connection |
| CN112062507A (en) * | 2020-09-14 | 2020-12-11 | 北京新奥混凝土集团有限公司 | Concrete containing recycled waste brick fine aggregate |
| CN112159178A (en) * | 2020-10-12 | 2021-01-01 | 北京联绿技术集团有限公司 | Concrete containing waste brick powder and fly ash |
| CN112174613A (en) * | 2020-10-12 | 2021-01-05 | 北京新奥混凝土集团有限公司 | Concrete containing waste brick powder |
| CN112159178B (en) * | 2020-10-12 | 2021-08-10 | 北京联绿技术集团有限公司 | Concrete containing waste brick powder and fly ash |
| CN113636768A (en) * | 2021-07-17 | 2021-11-12 | 北京城建华晟交通建设有限公司 | Excited clay brick micro powder and preparation method thereof, cementing material and regenerated brick |
| CN114835415A (en) * | 2022-03-25 | 2022-08-02 | 洛阳绿筑建筑材料有限公司 | Preparation method of silicon-aluminum-based gel material, silicon-aluminum-based gel material and application thereof |
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Application publication date: 20150506 |