CN102432207A - Construction regenerated cementing material prepared from construction waste and preparation method thereof - Google Patents
Construction regenerated cementing material prepared from construction waste and preparation method thereof Download PDFInfo
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- CN102432207A CN102432207A CN2011102528530A CN201110252853A CN102432207A CN 102432207 A CN102432207 A CN 102432207A CN 2011102528530 A CN2011102528530 A CN 2011102528530A CN 201110252853 A CN201110252853 A CN 201110252853A CN 102432207 A CN102432207 A CN 102432207A
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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Abstract
The construction waste is placed into a regenerating machine for rubbing, impacting, activating and modifying, a micro powder extracting device is used for obtaining regenerated micro powder, and the proportion is adjusted to obtain the construction regenerated cementing material. The preparation method comprises the following steps: pretreating construction wastes, and reserving waste concrete, waste bricks, waste sand ash and waste muck as raw materials; crushing and screening the raw materials to obtain particles; treating the particles in a regenerating machine to remove the inert film on the sand grains and activate the surface activity of the particles, extracting the micro powder by a dust collector, sieving the micro powder, and taking the undersize to obtain regenerated micro powder; continuously crushing the particles which are not extracted, and extracting the regenerated micro powder while crushing; inspecting, and adjusting components to obtain the building regenerated cementing material; the particles in the regenerating machine are used as regenerated sand. The application method of the regenerated cementing material for the building replaces 50 to 70 percent of ordinary Portland cement with the regenerated cementing material for the building to be used as masonry cement.
Description
Technical field
The present invention relates to a kind of material of construction and preparation method thereof, concrete is regenerative gel material for building that utilizes the building castoff preparation and preparation method thereof.
Background technology
Along with the propelling of expanding economy and urbanization process, construction industry has obtained the development of advancing by leaps and bounds, and the building castoff that in the construction of buildings, maintenance, demolishing process, produces accordingly is also in continuous increase.According to statistics, annual construction of China and the formed building castoff total amount of dismounting old building are up to about 4.8 hundred million tons, and in following 10 years, national construction waste deposits yields total amount will reach 1,300,000,000 tons every year on average.Mainly waste concrete, useless fragment of brick, steel scrap muscle etc. in the building castoff; Can be used as secondary resource through processing such as letter sorting, fragmentations recycles; But can produce the small powder of a large amount of particles in construction process or in the building waste treating processes, this part micro powder accounts for 10%～20% of building castoff total amount.The domestic and international at present comprehensive reutilization to building waste only limits to the above size particles of 4.75 ㎜; Particle diameter is less than small-particle and the powdery building castoff of 4.75 ㎜; Both can't realize recycling on the complete meaning of building waste, and cause serious environmental to pollute and the wasting of resources again.
Under physics, chemical action, become hard solid by the plasticity slurry, and the material that can glued unclassified stores becomes the composite solid of certain intensity is called as gelling material.Gelling material is divided into organic and inorganic two types.The organic gel gel material mainly contains pitch and various resin, and inorganic coagulation material is divided into two kinds of the hydraulicity and on-hydraulics again by its curing condition.Behind hydraulic cementing materials and the water pulping, can glued sandstone etc. material and in empty G&W, hardening, i.e. cement.Cement is one of important material of construction, in construction work, has a wide range of applications.
The Chinese patent document discloses some technical schemes about gelatinous material, " multi-functional gelatinous material " patent No. 200810201247.4, and multifunctional gelation material comprises monovalence dihydrogen phosphate powder, metal oxide powder and silicate powder." a kind of hydraulicity gelatinous material and preparation method thereof " patent No. 200810048811.3 is a kind of hydraulic cementing materials by Wingdale, technique waste residue, gypsum and admixture preparation and preparation method thereof." a kind of composite gelled material and preparation method thereof " patent No. 200810154960.8 is a kind of composite gelled materials; Form by major ingredient, inorganic auxiliary material and organic additive; Major ingredient comprises the calcining coal gangue powder; Also comprise at least a in blast-furnace slag, the flyash, inorganic auxiliary material is one or more of unslaked lime, white lime, water glass, sodium sulfate, S-WAT, gypsum.
Summary of the invention
The objective of the invention is for made from construction refuse resource; Make full use of small-particle and the powdery building castoff prepares inorganic coagulation material; Be used for building instead of part cement, the process method that provides the technical scheme of a kind of regenerative gel material for building that utilizes the building castoff preparation and preparation method thereof to be used to build.
Technical scheme of the present invention is: with the regenerative gel material for building of building castoff preparation; It is characterized in that; Building castoff is put into regenerating device and is carried out mutual rubbing, clashes into processing, activation, modification each other; Obtain the regenerative micro powder of particle diameter less than 75 μ m with extracting after the micro mist device extracts, the adjustment proportioning makes that to contain weight ratio in the regenerative micro powder be SiO
225～30%, CaO 25～28%, MgO 8～10%, Al
2O
35～8%, be regenerative gel material for building.
Described regenerating device is the drum-type regenerating device, and described extraction micro mist device is the air shocking type bag dust-precipitator, regenerative micro powder dust outlet air quantity 1500～2000m
3/ h.
With the preparation method of the regenerative gel material for building of building castoff preparation, concrete steps are following:
1) building castoff is carried out pre-treatment, remove foreign material, it is native to keep waste concrete, useless brick, antiquated sand ash, waste residue;
2) to waste concrete, useless brick, antiquated sand ash, the native fragmentation of waste residue, screening, obtain the PM for particulate matter of particle diameter smaller or equal to 4.75 ㎜;
3) with step 2) PM for particulate matter that obtains puts into the drum-type regenerating device and handles, and makes the mutual rubbing of construction waste composition granule, bump each other, removes inert coating on the sand grains, the jihuokeli surfactivity;
4) extract micro mist with the air shocking type bag dust-precipitator, the micro mist that extracts is crossed 200 mesh sieves, extracting screen underflow, the check particle diameter gets regenerative micro powder less than 75 μ m; The particle that is not extracted continues to accept pulverizing at the drum-type regenerating device, and regenerative micro powder is extracted on broken limit, limit;
5) check, adjustment makes that to contain weight ratio in the regenerative micro powder be SiO
225～30%, CaO 25～28%, MgO 8～10%, Al
2O
35～8%, be regenerative gel material for building;
6) particle of not taken out dirt in the regenerating device is as reclaimed sand.
Method of use with the regenerative gel material for building of building castoff preparation; Be to replace for ordinary Portland cement 50-70% with the described regenerative gel material for building of claim 1; As masonry cement, regenerative gel material for building is pressed GB3183-2003 " masonry cement " standard as the masonry cement detection method and is carried out.
The building castoff powdered granule is carried out the X fluorescent spectroscopy and X-ray diffraction analysis shows; The building castoff fine particle has same flyash, the silicon ash chemical constitution similar with cement; Wherein, quicklime, silicon-dioxide and aluminium sesquioxide occupy more than 65% of component total amount, contain a large amount of aquation calcium sulfate and aquation ca aluminosilicate in the thing phase composite; Show that the building castoff fine particle has certain chemically reactive, have very big reproducible utilization to be worth.But the building castoff granule surface area is less, the surface has formed inert coating, and the chemically reactive of raw material is closed.Regenerating device normally is used to handle cast waste sand, is used to remove inert coating and dust on the antiquated sand grain, makes old sand obtain regeneration.The present invention adopts regenerating device activation raw material, and raw material is mutual rubbing, mutual bump in regenerating device, removes inert coating on the sand grains, has realized that building castoff powdered granule chemically reactive is activated, and also makes the raw material surface-treated, with CaO and Al
2O
3The characteristic of composition is activated out; The present invention will meet the requirements of the superfine particle of building castoff through pulverizing and from raw material, separate through taking out the dirt device; The raw material that does not reach requirement can be pulverized in the continued access of equipment relaying, but this method extracts micro mist, non-stop run while pulverizing.More traditional pulverizing, sieve, return the circulation technology less equipment investment of pulverizing; Cost of manufacture is low, and the disintegrate-quality height do not have coarse particles and sneak into, and raw material is ground into the superfine little particle of particle diameter; Increase the specific surface area of material, strengthened the gelling effect of gelling material.The present invention is directed to the characteristics of building castoff composition uncertainty and complicacy, the composition of gelling material is made qualification, when the composition that mainly plays pectisation in the raw material is not enough, can replenish, to guarantee the quality of jelling agent.Product of the present invention can replace for ordinary Portland cement 50-70%.Through evidence; The regenerative gel material that utilizes the preparation of powdery building castoff is as masonry cement; Its test result meets the index request among the GB3183-2003 " masonry cement "; Proof is feasible with the regenerative gel material of building castoff preparation as the outer added ingredients of masonry cement, and this material can partly replace Portland cement to be used for building by laying bricks or stones and plastering mortar, blinding concrete etc. of industry and covil construction.Preparing method of the present invention is skillfully constructed, and is simple to operate, makes the abundant resource utilization of building waste, solved the secondary environmental pollution problem that in handling the building castoff process, causes, and realized the resource circulation utilization of building trade, guarantees the Sustainable development of construction industry.
Embodiment
1, with the preparation method of the building latex material of building castoff preparation, each embodiment sees table 1, and concrete steps are following:
1) raw material: building castoff is carried out pre-treatment, remove foreign material, it is native to keep waste concrete, useless brick, antiquated sand ash, waste residue;
2) equipment: the model LGG03-II drum-type regenerating device that the Central China University of Science and Technology produces; LPM5A-150 * 2 type air shocking type bag dust-precipitators that the clean magnificent Group Co.,Ltd in Haining, Zhejiang Province produces;
3) to waste concrete, useless brick, antiquated sand ash, the native fragmentation of waste residue, screening, get the PM for particulate matter of particle diameter smaller or equal to 4.75 ㎜;
4) PM for particulate matter that step 3 is obtained is put into the drum-type regenerating device and is handled, and manipulation of regeneration makes the mutual rubbing of construction waste composition granule, clashes into each other, removes inert coating on the sand grains, the jihuokeli surfactivity;
5) manipulation of regeneration was gathered dust with the air shocking type bag dust-precipitator after 30 minutes; Extracted particle diameter out 200 mesh sieves less than 75 μ m regenerative micro powders; Extracting screen underflow is a regenerative micro powder, and the particle that does not reach requirement can continue to accept pulverizing at the drum-type regenerating device, and regenerative micro powder is extracted on broken limit, limit; Save the technology of screening, regenerative micro powder particulate specific surface area reaches 350～400m
2/ kg;
6) particle of not taken out dirt in the regenerating device is a reclaimed sand, can be used as fine aggregate and uses particle diameter 75 μ m～4.75 ㎜;
7) obtain particle diameter and be the regenerative micro powder less than 75 μ m, the following compositions weight ratio is in check and the allotment regenerative micro powder: SiO
225～30%, CaO 25～28%, MgO 8～10%, Al
2O
35～8%, main thing is SiO mutually
2, CaCO
3, CaMg (CO
3)
2, Ca
12Al
14O
33, be regenerative gel material for building.Masonry cement is mainly used in builds by laying bricks or stones and plastering mortar, cushion layer concrete etc., shall not be applied to the structure concrete;
2, build by laying bricks or stones, the alternative ordinary Portland cement 50-70% of regenerative gel material for building in plastering mortar and the blinding concrete, concrete weight proportion is following, regenerative gel material 30～50%, cement 20～30%; Silicon ash 3～8%, flyash 3～8%, fine aggregate 4.5～12%, water reducer 0.3～0.8%; Sodium hydroxide 5～9%, gypsum 8%～10%, wc 0.4～0.5; Concrete proportioning is seen table 3, and wherein, the silicon ash is high reactivity SiO
2, fine aggregate is a particle of not taken out dirt in the preparation regenerative gel material, is reclaimed sand.Sodium hydroxide is as chemical activator, CaO in the activating and regenerating micro mist and Al
2O
3, gelling material is carried out as strict GB3183-2003 " masonry cement " standard of pressing of masonry cement detection method, sees table 3.
Table 1 preparation regenerative gel material parameter list
Table 2 adopts regenerative gel material preparation masonry cement parameter list
Table 3 GB3183-2003 " masonry cement " mechanical property
Claims (4)
1. the regenerative gel material for building for preparing with building castoff; It is characterized in that; Building castoff is put into regenerating device and is carried out mutual rubbing, clashes into processing, activation, modification each other; Obtain the regenerative micro powder of particle diameter less than 75 μ m with extracting after the micro mist device extracts, the adjustment proportioning makes that to contain weight ratio in the regenerative micro powder be SiO
225～30%, CaO 25～28%, MgO 8～10%, Al
2O
35～8%, be regenerative gel material for building.
2. the regenerative gel material for building with the building castoff preparation according to claim 1; It is characterized in that; Described regenerating device is the drum-type regenerating device, and described extraction micro mist device is the air shocking type bag dust-precipitator, regenerative micro powder dust outlet air quantity 1500～2000m
3/ h.
3. the preparation method of the regenerative gel material for building with building castoff preparation as claimed in claim 1 is characterized in that concrete steps are following:
1) building castoff is carried out pre-treatment, remove foreign material, keep waste concrete, useless brick, antiquated sand ash, native this raw material of waste residue;
2) to waste concrete, useless brick, antiquated sand ash, the native raw material crushing of waste residue, screening, obtain the PM for particulate matter of particle diameter smaller or equal to 4.75 ㎜;
3) with step 2) PM for particulate matter that obtains puts into the drum-type regenerating device and handles, and makes the mutual rubbing of construction waste composition granule, bump each other, removes inert coating on the sand grains, the jihuokeli surfactivity;
4) extract micro mist with the air shocking type bag dust-precipitator, the micro mist that extracts is crossed 200 mesh sieves, extracting screen underflow, the check particle diameter gets regenerative micro powder less than 75 μ m; The particle that is not extracted continues to accept pulverizing at the drum-type regenerating device, and regenerative micro powder is extracted on broken limit, limit;
5) check, adjustment makes that to contain weight ratio in the regenerative micro powder be SiO
225～30%, CaO 25～28%, MgO 8～10%, Al
2O
35～8%, be regenerative gel material for building;
6) particle of not taken out dirt in the regenerating device is as reclaimed sand.
4. the method for use of the regenerative gel material for building with building castoff preparation as claimed in claim 1 is characterized in that, with the described regenerative gel material replacement for building of claim 1 for ordinary Portland cement 50-70%, as masonry cement.
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Cited By (17)
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|---|---|---|---|---|
| CN103553395A (en) * | 2013-10-17 | 2014-02-05 | 北京新奥混凝土集团有限公司 | Recycled green concrete with low cement content and preparation method thereof |
| CN103613300A (en) * | 2013-12-11 | 2014-03-05 | 詹树荣 | Recycling and treatment process and device for waste ceramic by crushing and grinding and pre-mixed concrete |
| WO2014110845A1 (en) * | 2013-01-17 | 2014-07-24 | 上海国砼环保设备有限公司 | Apparatus of combined grinding resource treatment system for construction waste residues, and using method thereof |
| CN106746958A (en) * | 2016-11-25 | 2017-05-31 | 四川菱通智能环保产业有限公司 | The preparation method that hollow concrete is laid bricks is prepared using discarded concrete |
| CN107098633A (en) * | 2016-02-22 | 2017-08-29 | Ik株式会社 | The method that cement bonding agent is prepared using discarded concrete |
| CN107140855A (en) * | 2017-07-05 | 2017-09-08 | 青海大学 | A kind of method that concrete regenerating micro mist produces magnesium cement activated magnesia |
| CN107311491A (en) * | 2017-07-05 | 2017-11-03 | 青海大学 | A kind of method that concrete regenerating micro mist produces magnesium cement activated magnesia |
| CN109704384A (en) * | 2019-01-24 | 2019-05-03 | 长江师范学院 | A kind of preparation method of anhydrous calcium chloride |
| CN110194624A (en) * | 2019-06-13 | 2019-09-03 | 北京建工一建工程建设有限公司 | A kind of high-strength insulation concrete and preparation method thereof |
| CN110404632A (en) * | 2019-07-08 | 2019-11-05 | 张沁玥 | A kind of construction waste regeneration method and its application |
| 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 |
| CN111205003A (en) * | 2020-01-19 | 2020-05-29 | 武汉理工大学 | Preparation method of regenerated cementing material |
| CN112341025A (en) * | 2020-10-23 | 2021-02-09 | 山东鲁桥建材有限公司 | Regenerated micro-powder admixture, preparation method thereof and application thereof as cement substitute |
| CN112592077A (en) * | 2021-01-24 | 2021-04-02 | 湖南科技大学 | Brick-concrete construction waste slag cold recycling cementitious material and its use method |
| CN112794683A (en) * | 2021-01-13 | 2021-05-14 | 南京工业大学 | A kind of waste concrete-based recycled cementitious material and preparation method thereof |
| CN116409948A (en) * | 2021-12-31 | 2023-07-11 | 江苏苏博特新材料股份有限公司 | Low-carbon composite gelling material based on recycled micropowder, its preparation method and application |
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Patent Citations (1)
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| CN101244906A (en) * | 2008-03-14 | 2008-08-20 | 李秋义 | A kind of preparation method and application of highly active mineral admixture |
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| WO2014110845A1 (en) * | 2013-01-17 | 2014-07-24 | 上海国砼环保设备有限公司 | Apparatus of combined grinding resource treatment system for construction waste residues, and using method thereof |
| CN103553395A (en) * | 2013-10-17 | 2014-02-05 | 北京新奥混凝土集团有限公司 | Recycled green concrete with low cement content and preparation method thereof |
| CN103553395B (en) * | 2013-10-17 | 2015-09-30 | 北京新奥混凝土集团有限公司 | A kind of low cement content regeneration green concrete and preparation method thereof |
| CN103613300A (en) * | 2013-12-11 | 2014-03-05 | 詹树荣 | Recycling and treatment process and device for waste ceramic by crushing and grinding and pre-mixed concrete |
| CN107098633A (en) * | 2016-02-22 | 2017-08-29 | Ik株式会社 | The method that cement bonding agent is prepared using discarded concrete |
| CN106746958A (en) * | 2016-11-25 | 2017-05-31 | 四川菱通智能环保产业有限公司 | The preparation method that hollow concrete is laid bricks is prepared using discarded concrete |
| CN106746958B (en) * | 2016-11-25 | 2018-12-21 | 四川菱通智能环保产业有限公司 | The preparation method that hollow concrete is laid bricks is prepared using discarded concrete |
| CN107140855A (en) * | 2017-07-05 | 2017-09-08 | 青海大学 | A kind of method that concrete regenerating micro mist produces magnesium cement activated magnesia |
| CN107311491A (en) * | 2017-07-05 | 2017-11-03 | 青海大学 | A kind of method that concrete regenerating micro mist produces magnesium cement activated magnesia |
| CN109704384B (en) * | 2019-01-24 | 2021-03-23 | 长江师范学院 | Preparation method of anhydrous calcium chloride |
| CN109704384A (en) * | 2019-01-24 | 2019-05-03 | 长江师范学院 | A kind of preparation method of anhydrous calcium chloride |
| CN110194624A (en) * | 2019-06-13 | 2019-09-03 | 北京建工一建工程建设有限公司 | A kind of high-strength insulation concrete and preparation method thereof |
| CN110404632A (en) * | 2019-07-08 | 2019-11-05 | 张沁玥 | A kind of construction waste regeneration method and its application |
| 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 |
| CN111205003B (en) * | 2020-01-19 | 2021-06-25 | 武汉理工大学 | A kind of preparation method of regenerated cementitious material |
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| CN112341025A (en) * | 2020-10-23 | 2021-02-09 | 山东鲁桥建材有限公司 | Regenerated micro-powder admixture, preparation method thereof and application thereof as cement substitute |
| CN112794683A (en) * | 2021-01-13 | 2021-05-14 | 南京工业大学 | A kind of waste concrete-based recycled cementitious material and preparation method thereof |
| CN112592077A (en) * | 2021-01-24 | 2021-04-02 | 湖南科技大学 | Brick-concrete construction waste slag cold recycling cementitious material and its use method |
| CN112592077B (en) * | 2021-01-24 | 2022-06-28 | 湖南科技大学 | Brick-concrete building waste residue cold-recycling cementing material and use method thereof |
| CN116409948A (en) * | 2021-12-31 | 2023-07-11 | 江苏苏博特新材料股份有限公司 | Low-carbon composite gelling material based on recycled micropowder, its preparation method and application |
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| WO2025219433A1 (en) * | 2024-04-16 | 2025-10-23 | Holcim Technology Ltd | Method of processing construction demolition material |
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Application publication date: 20120502 |