CN112239332A - Preparation process of recycled concrete aggregate - Google Patents
Preparation process of recycled concrete aggregate Download PDFInfo
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- CN112239332A CN112239332A CN202011051635.6A CN202011051635A CN112239332A CN 112239332 A CN112239332 A CN 112239332A CN 202011051635 A CN202011051635 A CN 202011051635A CN 112239332 A CN112239332 A CN 112239332A
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- concrete aggregate
- recycled concrete
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/026—Comminuting, e.g. by grinding or breaking; Defibrillating fibres other than asbestos
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/16—Waste materials; Refuse from building or ceramic industry
- C04B18/167—Recycled materials, i.e. waste materials reused in the production of the same materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a preparation process of recycled concrete aggregate, which comprises the following steps: transporting the concrete waste blocks into a washing tank, soaking for 6-8 hours, removing powder adhered to the surfaces of the waste blocks, and airing until no water stain exists on the surfaces for later use; step two, transporting the waste blocks treated in the step one to a jaw crusher, after crushing treatment, putting the waste blocks into a screening machine, and screening recycled concrete aggregate particles of 20-40mm, 5-20mm and less than 5 mm; the concrete aggregate prepared by the method has apparent density of 2800 kg.m after being prepared‑3Compared with the concrete aggregate in the prior art, the bulk density is greatly improved and is basically close to that of the natural concrete aggregate, meanwhile, the porosity is low, the water absorption rate is greatly reduced, the crushing index is reduced, and the performance of the recycled concrete aggregate is greatly improved.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to a preparation process of recycled concrete aggregate.
Background
Along with the development of the urbanization process of China, the discharge amount of construction waste is increased year by year, and the proportion of renewable components is also continuously improved. However, most of the construction waste is not treated at all and is transported to the suburbs or the periphery of cities for simple landfill or open-air stockpiling, which not only wastes land and resources, but also pollutes the environment; on the other hand, with the increasing population, the demand of sandstone aggregate for the construction industry is increasing. For a long time, as the sandstone aggregate is wide in source, easy to obtain and low in price, the sandstone aggregate is regarded as an inexhaustible raw material and is randomly mined, so that the resource is exhausted, the mountain landslide and the river bed are rerouted, and the natural environment is seriously damaged. The production and utilization of the construction waste recycled aggregate have important significance for saving resources, protecting the environment and realizing the sustainable development of the construction industry.
The recycled concrete aggregate is aggregate with the grain diameter of less than 40mm obtained by crushing and processing waste concrete. Since the recycled concrete aggregate is obtained by crushing and processing waste concrete, compared with the natural aggregate, mortar is usually attached to the surface of the recycled concrete, that is, the recycled concrete aggregate is composed of the natural aggregate and the attached mortar, so that the recycled aggregate and the natural aggregate have certain difference.
The existing recycled concrete aggregate has low apparent density, high porosity and low performance, can not completely replace natural aggregate to carry out building construction, and has low application range, so the preparation process of the recycled concrete aggregate is provided.
Disclosure of Invention
The invention aims to provide a preparation process of recycled concrete aggregate, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a preparation process of recycled concrete aggregate comprises the following steps:
transporting the concrete waste blocks into a washing tank, soaking for 6-8 hours, removing powder adhered to the surfaces of the waste blocks, and airing until no water stain exists on the surfaces for later use;
step two, transporting the waste blocks treated in the step one to a jaw crusher, after crushing treatment, putting the waste blocks into a screening machine, and screening recycled concrete aggregate particles of 20-40mm, 5-20mm and less than 5 mm;
step three, respectively putting the recycled concrete aggregate particles of 20-40mm, 5-20mm and less than 5mm into different water tanks, heating to 40-60 ℃, adding a modifier, soaking for 18-24h, taking out, and airing until no water stain exists on the surface for later use;
and step four, respectively putting the recycled concrete aggregate particles treated in the step three into a treatment tank, performing microwave irradiation for 35-40min, and taking out to obtain the recycled concrete aggregate.
Preferably: in the first step, when the concrete waste block is cleaned, the washing tank is stirred, and the stirring frequency is 2-3 times per hour.
Preferably: in the second step, the crushing frequency of the jaw crusher is 60-80r/min, the powder with the particle size smaller than 5mm in the sieved recycled concrete aggregate particles is collected into a waste area and is used as concrete powder, the concrete particles with the particle size larger than 40mm are thrown into the jaw crusher again for crushing, the crushed recycled concrete particles are thrown into the sieving machine again for sieving the recycled concrete aggregate particles with the particle size of 20-40mm, 5-20mm and smaller than 5mm, and classification treatment is carried out.
Preferably: in the third step, the modifier is prepared from the following raw materials: the composite material comprises a fiber filler, water, cement and fly ash, wherein the ratio of the fiber filler to the water to the cement to the fly ash is 0.6-0.8:1.5-1.8:0.4: 0.7-0.9.
Preferably: the modifier comprises the following steps in preparation:
(1) adding the cement and the fly ash into a stirrer, then pouring water, and stirring for 15-20 min;
(2) adding fiber filler, and stirring for 5-8 min;
(3) and taking out to obtain the modifier.
Preferably: the fiber filler is any one or mixture of more of PC fiber, steel fiber and carbon fiber.
Preferably: in the fourth step, the power of the microwave irradiation is 2-4 Kv.
Preferably: in the second step, before the treated waste block is transported into a jaw crusher, the method also comprises the steps of removing waste steel bars in the concrete block by using a magnetic device and then removing non-ferrous impurities by using a separation table.
Compared with the prior art, the invention has the beneficial effects that:
firstly, the apparent density of the concrete aggregate prepared by the method of the invention reaches 2800 kg.m after the preparation-3Compared with the concrete aggregate in the prior art, the bulk density is greatly improved and is basically close to that of the natural concrete aggregate, meanwhile, the porosity is low, the water absorption rate is greatly reduced, the crushing index is reduced, and the performance of the recycled concrete aggregate is greatly improved;
the invention combines mechanical crushing and heating, saves time, changes the mechanical property of the aggregate, improves the property of the processed recycled concrete aggregate, and simultaneously adopts microwave irradiation treatment after treatment, further enhances various properties of the recycled concrete aggregate particles, and is suitable for wide popularization.
Drawings
FIG. 1 is a flow chart of the preparation method of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Referring to fig. 1, the present invention provides a technical solution: a preparation process of recycled concrete aggregate comprises the following steps:
transporting the concrete waste blocks into a washing tank, soaking for 6 hours, removing powder adhered to the surfaces of the waste blocks, and airing until no water stain exists on the surfaces for later use;
step two, transporting the waste blocks treated in the step one to a jaw crusher, after crushing treatment, putting the waste blocks into a screening machine, and screening recycled concrete aggregate particles of 20-40mm, 5-20mm and less than 5 mm;
step three, respectively putting the recycled concrete aggregate particles of 20-40mm, 5-20mm and less than 5mm into different water tanks, heating to 40 ℃, adding a modifier, soaking for 24 hours, taking out, and airing until no water stain exists on the surface for later use;
and step four, respectively putting the recycled concrete aggregate particles treated in the step three into a treatment tank, performing microwave irradiation for 35min, and taking out to obtain the recycled concrete aggregate.
In this embodiment, specifically: in the first step, when the concrete waste block is cleaned, the washing tank is stirred, and the stirring frequency is 2 times per hour.
In this embodiment, specifically: in the second step, the crushing frequency of the jaw crusher is 60-80r/min, the powder with the particle size smaller than 5mm in the sieved recycled concrete aggregate particles is collected into a waste area and is used as concrete powder, the concrete particles with the particle size larger than 40mm are thrown into the jaw crusher again for crushing, the crushed recycled concrete particles are thrown into the sieving machine again for sieving the recycled concrete aggregate particles with the particle size of 20-40mm, 5-20mm and smaller than 5mm, and classification treatment is carried out.
Further: in the third step, the modifier is prepared from the following raw materials: the cement-fly ash composite material comprises a fiber filler, water, cement and fly ash, wherein the ratio of the fiber filler to the water to the cement to the fly ash is 0.6:1.5:0.4: 0.7.
On the basis of the scheme: the modifier is prepared by the following steps:
(1) adding the cement and the fly ash into a stirrer, then pouring water, and stirring for 15 min;
(2) adding fiber filler, and stirring for 5 min;
(3) and taking out to obtain the modifier.
In this embodiment, specifically: the fibrous filler is PC fiber.
In the technical aspect of the scheme, the method comprises the following steps: in step four, the power of the microwave irradiation is 2 Kv.
In this embodiment, specifically: and in the second step, before the treated waste block is transported into a jaw crusher, removing waste reinforcing steel bars in the concrete block by using magnetic equipment, and then removing non-ferrous impurities by using a separation table.
Example two
Referring to fig. 1, the present invention provides a technical solution: a preparation process of recycled concrete aggregate comprises the following steps:
transporting the concrete waste blocks into a washing tank, soaking for 7 hours, removing powder adhered to the surfaces of the waste blocks, and airing until no water stain exists on the surfaces for later use;
step two, transporting the waste blocks treated in the step one to a jaw crusher, after crushing treatment, putting the waste blocks into a screening machine, and screening recycled concrete aggregate particles of 20-40mm, 5-20mm and less than 5 mm;
step three, respectively putting the recycled concrete aggregate particles of 20-40mm, 5-20mm and less than 5mm into different water tanks, heating to 55 ℃, adding a modifier, soaking for 21 hours, taking out, and airing until no water stain exists on the surface for later use;
and step four, respectively putting the recycled concrete aggregate particles treated in the step three into a treatment tank, irradiating the recycled concrete aggregate particles for 40min by using microwave, and taking out the recycled concrete aggregate particles to obtain the recycled concrete aggregate.
In this embodiment, specifically: in the first step, when the concrete waste block is cleaned, the washing tank is stirred, and the stirring frequency is 3 times per hour.
In this embodiment, specifically: in the second step, the crushing frequency of the jaw crusher is 60-80r/min, the powder with the particle size smaller than 5mm in the sieved recycled concrete aggregate particles is collected into a waste area and is used as concrete powder, the concrete particles with the particle size larger than 40mm are thrown into the jaw crusher again for crushing, the crushed recycled concrete particles are thrown into the sieving machine again for sieving the recycled concrete aggregate particles with the particle size of 20-40mm, 5-20mm and smaller than 5mm, and classification treatment is carried out.
Further: in the third step, the modifier is prepared from the following raw materials: the cement-fly ash composite material comprises a fiber filler, water, cement and fly ash, wherein the ratio of the fiber filler to the water to the cement to the fly ash is 0.7:1.7:0.4: 0.8.
On the basis of the scheme: the modifier is prepared by the following steps:
(1) adding the cement and the fly ash into a stirrer, then pouring water, and stirring for 16 min;
(2) adding fiber filler, and stirring for 7 min;
(3) and taking out to obtain the modifier.
In this embodiment, specifically: the fiber filler is a mixture of PC fiber, steel fiber and carbon fiber.
In the technical aspect of the scheme, the method comprises the following steps: in step four, the power of the microwave irradiation was 3 Kv.
In this embodiment, specifically: and in the second step, before the treated waste block is transported into a jaw crusher, removing waste reinforcing steel bars in the concrete block by using magnetic equipment, and then removing non-ferrous impurities by using a separation table.
EXAMPLE III
Referring to fig. 1, the present invention provides a technical solution: a preparation process of recycled concrete aggregate comprises the following steps:
transporting the concrete waste blocks into a washing tank, soaking for 8 hours, removing powder adhered to the surfaces of the waste blocks, and airing until no water stain exists on the surfaces for later use;
step two, transporting the waste blocks treated in the step one to a jaw crusher, after crushing treatment, putting the waste blocks into a screening machine, and screening recycled concrete aggregate particles of 20-40mm, 5-20mm and less than 5 mm;
step three, respectively putting the recycled concrete aggregate particles of 20-40mm, 5-20mm and less than 5mm into different water tanks, heating to 60 ℃, adding a modifier, soaking for 24 hours, taking out, and airing until no water stain exists on the surface for later use;
and step four, respectively putting the recycled concrete aggregate particles treated in the step three into a treatment tank, irradiating the recycled concrete aggregate particles for 40min by using microwave, and taking out the recycled concrete aggregate particles to obtain the recycled concrete aggregate.
In this embodiment, specifically: in the first step, when the concrete waste block is cleaned, the washing tank is stirred, and the stirring frequency is 3 times per hour.
In this embodiment, specifically: in the second step, the crushing frequency of the jaw crusher is 60-80r/min, the powder with the particle size smaller than 5mm in the sieved recycled concrete aggregate particles is collected into a waste area and is used as concrete powder, the concrete particles with the particle size larger than 40mm are thrown into the jaw crusher again for crushing, the crushed recycled concrete particles are thrown into the sieving machine again for sieving the recycled concrete aggregate particles with the particle size of 20-40mm, 5-20mm and smaller than 5mm, and classification treatment is carried out.
Further: in the third step, the modifier is prepared from the following raw materials: the cement-fly ash composite material comprises a fiber filler, water, cement and fly ash, wherein the ratio of the fiber filler to the water to the cement to the fly ash is 0.8:1.8:0.4: 0.9.
On the basis of the scheme: the modifier is prepared by the following steps:
(1) adding the cement and the fly ash into a stirrer, then pouring water, and stirring for 20 min;
(2) adding fiber filler, and stirring for 8 min;
(3) and taking out to obtain the modifier.
In this embodiment, specifically: the fiber filler is a mixture of steel fibers and carbon fibers.
In the technical aspect of the scheme, the method comprises the following steps: in step four, the power of the microwave irradiation was 4 Kv.
In this embodiment, specifically: and in the second step, before the treated waste block is transported into a jaw crusher, removing waste reinforcing steel bars in the concrete block by using magnetic equipment, and then removing non-ferrous impurities by using a separation table.
The invention also provides a method for measuring various basic properties of the recycled concrete aggregate obtained by the preparation method according to JCJ 53-92 quality standard and inspection method of crushed stones or pebbles for common concrete, as shown in Table 1:
table 1: index detection meter for recycled concrete aggregate
| Apparent density/kg m-3 | Bulk density/kg. m-3 | Void fraction/%) | Water absorption/%) | Crush index/%) | Water content% | |
| Example one | 2814 | 1703 | 29.45 | 0.76 | 6.85 | 0.95 |
| Example two | 2845 | 1735 | 28.65 | 0.69 | 6.44 | 0.85 |
| EXAMPLE III | 2836 | 1718 | 28.02 | 0.72 | 6.75 | 0.93 |
As can be seen from the data in the above table, the concrete aggregate prepared by the method of the present invention has an apparent density of 2800kg m-3Compared with the concrete aggregate in the prior art, the bulk density is greatly improved and is basically close to that of the natural concrete aggregate, meanwhile, the porosity is low, the water absorption rate is greatly reduced, the crushing index is reduced, and the performance of the recycled concrete aggregate is greatly improved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The preparation process of the recycled concrete aggregate is characterized by comprising the following steps of:
transporting the concrete waste blocks into a washing tank, soaking for 6-8 hours, removing powder adhered to the surfaces of the waste blocks, and airing until no water stain exists on the surfaces for later use;
step two, transporting the waste blocks treated in the step one to a jaw crusher, after crushing treatment, putting the waste blocks into a screening machine, and screening recycled concrete aggregate particles of 20-40mm, 5-20mm and less than 5 mm;
step three, respectively putting the recycled concrete aggregate particles of 20-40mm, 5-20mm and less than 5mm into different water tanks, heating to 40-60 ℃, adding a modifier, soaking for 18-24h, taking out, and airing until no water stain exists on the surface for later use;
and step four, respectively putting the recycled concrete aggregate particles treated in the step three into a treatment tank, performing microwave irradiation for 35-40min, and taking out to obtain the recycled concrete aggregate.
2. The process for preparing a recycled concrete aggregate according to claim 1, characterized in that: in the first step, when the concrete waste block is cleaned, the washing tank is stirred, and the stirring frequency is 2-3 times per hour.
3. The process for preparing a recycled concrete aggregate according to claim 1, characterized in that: in the second step, the crushing frequency of the jaw crusher is 60-80r/min, the powder with the particle size smaller than 5mm in the sieved recycled concrete aggregate particles is collected into a waste area and is used as concrete powder, the concrete particles with the particle size larger than 40mm are thrown into the jaw crusher again for crushing, the crushed recycled concrete particles are thrown into the sieving machine again for sieving the recycled concrete aggregate particles with the particle size of 20-40mm, 5-20mm and smaller than 5mm, and classification treatment is carried out.
4. The process for preparing a recycled concrete aggregate according to claim 1, characterized in that: in the third step, the modifier is prepared from the following raw materials: the composite material comprises a fiber filler, water, cement and fly ash, wherein the ratio of the fiber filler to the water to the cement to the fly ash is 0.6-0.8:1.5-1.8:0.4: 0.7-0.9.
5. The process for preparing recycled concrete aggregate according to claim 4, wherein: the modifier comprises the following steps in preparation:
(1) adding the cement and the fly ash into a stirrer, then pouring water, and stirring for 15-20 min;
(2) adding fiber filler, and stirring for 5-8 min;
(3) and taking out to obtain the modifier.
6. The process for preparing recycled concrete aggregate according to claim 4, wherein: the fiber filler is any one or mixture of more of PC fiber, steel fiber and carbon fiber.
7. The process for preparing a recycled concrete aggregate according to claim 1, characterized in that: in the fourth step, the power of the microwave irradiation is 2-4 Kv.
8. The process for preparing a recycled concrete aggregate according to claim 1, characterized in that: in the second step, before the treated waste block is transported into a jaw crusher, the method also comprises the steps of removing waste steel bars in the concrete block by using a magnetic device and then removing non-ferrous impurities by using a separation table.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114180892A (en) * | 2021-12-22 | 2022-03-15 | 宿迁和天下建材科技有限公司 | Energy-saving renewable concrete and preparation method thereof |
| CN114380523A (en) * | 2021-12-27 | 2022-04-22 | 常熟市博海新型建材有限公司 | Preparation method of recycled aggregate applied to laminated slab |
| CN116553870A (en) * | 2023-05-04 | 2023-08-08 | 江苏晨马建筑科技有限公司 | Environment-friendly concrete formula for prefabricated rainwater and sewage well and preparation method of environment-friendly concrete formula |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0891893A (en) * | 1994-09-29 | 1996-04-09 | Mitsubishi Materials Corp | Production of regenerated aggregate |
| CN105776930A (en) * | 2016-05-23 | 2016-07-20 | 西安科技大学 | Microwave-assisted recycled concrete coarse aggregate picking method |
| CN109265038A (en) * | 2018-11-14 | 2019-01-25 | 河北建设股份集团有限公司 | A kind of modification regeneration coarse aggregate and its method for preparing regeneration concrete |
| CN110256025A (en) * | 2019-06-25 | 2019-09-20 | 绍兴上虞南方普银混凝土有限公司 | Its regeneration concrete of a kind of preparation process of Aggregate of recycled concrete and application |
| CN110357472A (en) * | 2019-08-13 | 2019-10-22 | 广东新瑞龙生态建材有限公司 | A kind of technique that building waste prepares regenerated coarse aggregate |
| CN110482895A (en) * | 2019-09-23 | 2019-11-22 | 广西壮族自治区水利科学研究院 | A kind of method of modifying of recycled aggregate |
| CN110563370A (en) * | 2019-09-21 | 2019-12-13 | 浙江越达交通工程有限公司 | production process for preparing recycled aggregate from waste concrete |
| CN111320407A (en) * | 2020-04-16 | 2020-06-23 | 湖州恒通机械设备有限公司 | Process for preparing recycled building material from building garbage |
| CN111393057A (en) * | 2020-03-12 | 2020-07-10 | 佛山市交通科技有限公司 | Regeneration method of waste concrete and modified regenerated concrete |
-
2020
- 2020-09-29 CN CN202011051635.6A patent/CN112239332A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0891893A (en) * | 1994-09-29 | 1996-04-09 | Mitsubishi Materials Corp | Production of regenerated aggregate |
| CN105776930A (en) * | 2016-05-23 | 2016-07-20 | 西安科技大学 | Microwave-assisted recycled concrete coarse aggregate picking method |
| CN109265038A (en) * | 2018-11-14 | 2019-01-25 | 河北建设股份集团有限公司 | A kind of modification regeneration coarse aggregate and its method for preparing regeneration concrete |
| CN110256025A (en) * | 2019-06-25 | 2019-09-20 | 绍兴上虞南方普银混凝土有限公司 | Its regeneration concrete of a kind of preparation process of Aggregate of recycled concrete and application |
| CN110357472A (en) * | 2019-08-13 | 2019-10-22 | 广东新瑞龙生态建材有限公司 | A kind of technique that building waste prepares regenerated coarse aggregate |
| CN110563370A (en) * | 2019-09-21 | 2019-12-13 | 浙江越达交通工程有限公司 | production process for preparing recycled aggregate from waste concrete |
| CN110482895A (en) * | 2019-09-23 | 2019-11-22 | 广西壮族自治区水利科学研究院 | A kind of method of modifying of recycled aggregate |
| CN111393057A (en) * | 2020-03-12 | 2020-07-10 | 佛山市交通科技有限公司 | Regeneration method of waste concrete and modified regenerated concrete |
| CN111320407A (en) * | 2020-04-16 | 2020-06-23 | 湖州恒通机械设备有限公司 | Process for preparing recycled building material from building garbage |
Non-Patent Citations (1)
| Title |
|---|
| 朱平华等: "《再生混凝土概论》", 31 July 2017, 北京理工大学出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114180892A (en) * | 2021-12-22 | 2022-03-15 | 宿迁和天下建材科技有限公司 | Energy-saving renewable concrete and preparation method thereof |
| CN114380523A (en) * | 2021-12-27 | 2022-04-22 | 常熟市博海新型建材有限公司 | Preparation method of recycled aggregate applied to laminated slab |
| CN116553870A (en) * | 2023-05-04 | 2023-08-08 | 江苏晨马建筑科技有限公司 | Environment-friendly concrete formula for prefabricated rainwater and sewage well and preparation method of environment-friendly concrete formula |
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Application publication date: 20210119 |