CN115611572A - Concrete preparation method for recycling waste concrete blocks - Google Patents
Concrete preparation method for recycling waste concrete blocks Download PDFInfo
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- CN115611572A CN115611572A CN202211157571.7A CN202211157571A CN115611572A CN 115611572 A CN115611572 A CN 115611572A CN 202211157571 A CN202211157571 A CN 202211157571A CN 115611572 A CN115611572 A CN 115611572A
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- 239000002699 waste material Substances 0.000 title claims abstract description 79
- 238000004064 recycling Methods 0.000 title claims abstract description 16
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims abstract description 62
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 55
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 49
- 239000000843 powder Substances 0.000 claims abstract description 32
- 238000003756 stirring Methods 0.000 claims abstract description 32
- 229960000583 acetic acid Drugs 0.000 claims abstract description 31
- 239000003513 alkali Substances 0.000 claims abstract description 31
- 239000012362 glacial acetic acid Substances 0.000 claims abstract description 31
- 239000003365 glass fiber Substances 0.000 claims abstract description 31
- 239000006004 Quartz sand Substances 0.000 claims abstract description 26
- 239000010881 fly ash Substances 0.000 claims abstract description 26
- 239000002893 slag Substances 0.000 claims abstract description 26
- 239000004576 sand Substances 0.000 claims abstract description 23
- 239000002253 acid Substances 0.000 claims abstract description 21
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 21
- 239000000203 mixture Substances 0.000 claims abstract description 21
- 238000002156 mixing Methods 0.000 claims abstract description 17
- 239000003469 silicate cement Substances 0.000 claims abstract description 16
- 239000011398 Portland cement Substances 0.000 claims abstract description 10
- 239000002245 particle Substances 0.000 claims description 32
- 238000000034 method Methods 0.000 claims description 13
- 239000004568 cement Substances 0.000 claims description 10
- 239000002002 slurry Substances 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 5
- 239000011363 dried mixture Substances 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 5
- 229910052602 gypsum Inorganic materials 0.000 claims description 5
- 239000010440 gypsum Substances 0.000 claims description 5
- 239000012784 inorganic fiber Substances 0.000 claims description 5
- 239000003607 modifier Substances 0.000 claims description 5
- 239000012257 stirred material Substances 0.000 claims description 5
- -1 pebbles Substances 0.000 abstract description 2
- 239000004575 stone Substances 0.000 abstract 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000012237 artificial material Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
-
- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- 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)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to the technical field of concrete, and discloses a preparation method of concrete by recycling waste concrete blocks, which comprises the following steps: 200-300 parts of waste concrete blocks, 2-6 parts of polycarboxylic acid high-efficiency water reducing agent, 20-30 parts of slag, 14-18 parts of glacial acetic acid solution, 25-35 parts of alkali-resistant glass fiber, 25-35 parts of machine-made sandstone powder, 50-60 parts of fly ash silicate cement, 10-15 parts of pebbles, 15-25 parts of quartz sand and 200-280 parts of water are selected. The preparation method of the concrete with recycled waste concrete blocks comprises the steps of crushing the waste concrete blocks, adding a glacial acetic acid solution to improve the performance of regenerated aggregates, stirring and mixing fly ash portland cement and water, adding the mixture into the waste concrete to obtain regenerated aggregates, mixing slag, alkali-resistant glass fiber, machine-made sand stone powder, pebbles, quartz sand and the regenerated aggregates by using a stirrer, adding water and a polycarboxylic acid high-efficiency water reducing agent, improving the strength of the concrete, reducing gaps of the concrete and enabling the overall structural strength of the regenerated concrete to be good.
Description
Technical Field
The invention relates to the technical field of concrete, in particular to a preparation method of concrete by recycling waste concrete blocks.
Background
In recent years, the world building industry enters a high-speed development stage, the problem of sustainable development is also caused by the occupation of natural resources and the negative influence on the environment caused by concrete as the largest mass of artificial materials, and the quantity of waste concrete dismantled every year, waste concrete produced by newly built buildings and waste concrete discharged by concrete factories and prefabricated construction plants in the world is huge.
Meanwhile, the discharge amount of the waste concrete is expected to increase along with the acceleration of the urbanization process in the world, the demolition and the reconstruction of the original building are increased day by day, the existing treatment method of the waste concrete is mainly to prepare the waste concrete into recycled concrete, but when some waste concrete is prepared into recycled concrete materials, because the concrete is used, the surface of the recycled concrete is rough, the edges and corners are more, and a large number of fine cracks are generated in the aggregate in the concrete construction and destruction and aggregate production processes, so that the porosity of the recycled aggregate is high, and the apparent density and the stacking density are further reduced.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a concrete preparation method for recycling waste concrete blocks, which has the advantages of good service performance and the like and solves the problem of large cracks of recycled concrete.
(II) technical scheme
In order to achieve the purpose of improving the performance, the invention provides the following technical scheme: a preparation method of concrete for recycling waste concrete blocks comprises the following steps:
1) Selecting 200-300 parts of waste concrete blocks, 2-6 parts of polycarboxylic acid high-efficiency water reducing agent, 20-30 parts of slag, 14-18 parts of glacial acetic acid solution, 25-35 parts of alkali-resistant glass fiber, 25-35 parts of machine-made sandstone powder, 50-60 parts of fly ash silicate cement, 10-15 parts of pebbles, 15-25 parts of quartz sand and 200-280 parts of water;
2) Crushing the waste concrete blocks by a crusher to obtain small concrete blocks, putting the small concrete blocks into a crusher, crushing the small concrete blocks to obtain waste concrete particles, cleaning the waste concrete particles by clear water, removing fine concrete fragments, and drying by a dryer;
3) Putting the waste concrete particles obtained in the step 2) into a stirrer, adding a glacial acetic acid solution, and stirring at a low speed by the stirrer to enable the glacial acetic acid solution to fully react with the waste concrete particles;
4) Mixing fly ash portland cement and water, adding the mixture into a stirrer at a speed of 100 revolutions per minute, stirring the mixture to prepare cement slurry, mixing the cement slurry with waste concrete particles, standing the mixture for 30 minutes, putting the mixture into a dryer, drying the mixture, and taking the dried mixture out to obtain recycled aggregate;
5) Crushing the slag, the alkali-resistant glass fiber, the machine-made sand powder, the pebbles and the quartz sand by a crusher, adding the crushed slag, the alkali-resistant glass fiber, the machine-made sand powder, the machine-made pebbles and the quartz sand into a stirrer after crushing, and adding the regenerated aggregate into the stirrer to fully stir the regenerated aggregate and the crushed slag, the alkali-resistant glass fiber, the machine-made sand powder, the pebbles and the quartz sand;
6) And adding the polycarboxylic acid high-efficiency water reducing agent and 80% of water into the stirred material, then continuously stirring, adding the remaining 20% of water after stirring for half an hour, and continuously stirring for half an hour to finally obtain the recycled concrete.
Preferably, the diameter of the concrete small block is not more than 20cm.
Preferably, the waste concrete particles are no more than 3mm in diameter.
Preferably, the temperature of the dryer is 150-180 ℃ and the time is 1 hour.
Preferably, the concentration of the glacial acetic acid solution is 10% -15%, and the glacial acetic acid solution and the polycarboxylic acid high-efficiency water reducing agent are auxiliary modifiers of the waste concrete.
Preferably, the alkali-resistant glass fiber is 100% inorganic fiber, and the fly ash portland cement is prepared by mixing portland cement clinker and fly ash with a proper amount of gypsum and grinding.
(III) advantageous effects
Compared with the prior art, the invention provides a concrete preparation method for recycling waste concrete blocks, which has the following beneficial effects:
the method comprises the steps of selecting waste concrete blocks, a polycarboxylic acid high-efficiency water reducing agent, slag, a glacial acetic acid solution, alkali-resistant glass fiber, machine-made sand powder, fly ash silicate cement, pebbles, quartz sand and water, crushing the waste concrete blocks, adding the glacial acetic acid solution to improve the surface of regenerated particles, thereby improving the performance of regenerated aggregates, adding the fly ash silicate cement and the water into the waste concrete after stirring and mixing to obtain regenerated aggregates, mixing the slag, the alkali-resistant glass fiber, the machine-made sand powder, the pebbles, the quartz sand and the regenerated aggregates by a stirrer, adding the water and the polycarboxylic acid high-efficiency water reducing agent, improving the strength of the concrete, reducing gaps of the concrete and ensuring that the overall structural strength of the regenerated concrete is better.
Drawings
FIG. 1 is a schematic view of a concrete preparation process for recycling waste concrete blocks according to 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 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 obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
The first embodiment is as follows:
a preparation method of concrete for recycling waste concrete blocks comprises the following steps:
1) Selecting 200 parts of waste concrete blocks, 2 parts of polycarboxylic acid high-efficiency water reducing agent, 20 parts of slag, 14 parts of glacial acetic acid solution, 25 parts of alkali-resistant glass fiber, 40 parts of mineral powder, 25 parts of machine-made sand powder, 50 parts of fly ash silicate cement, 10 parts of pebbles, 15 parts of quartz sand and 200 parts of water;
2) Crushing the waste concrete blocks by a crusher to obtain small blocky concrete blocks, putting the concrete blocks into a crusher, crushing the concrete blocks to obtain waste concrete particles, cleaning the waste concrete particles by clear water, removing fine concrete powder, and drying by a dryer;
3) Putting the waste concrete particles obtained in the step 2) into a stirrer, adding a glacial acetic acid solution, and stirring at a low speed by the stirrer to enable the glacial acetic acid solution to fully react with the waste concrete particles;
4) Mixing fly ash portland cement and water, adding the mixture into a stirrer to stir at 100 revolutions per minute to prepare cement slurry, mixing the cement slurry with waste concrete particles, standing for 30 minutes, putting the mixture into a dryer to dry the mixture, and taking the dried mixture out to obtain recycled aggregate;
5) Crushing the slag, the alkali-resistant glass fiber, the machine-made sand powder, the pebbles and the quartz sand by a crusher, adding the crushed slag, the alkali-resistant glass fiber, the machine-made sand powder, the machine-made pebbles and the quartz sand into a stirrer after crushing, and adding the regenerated aggregate into the stirrer to fully stir the regenerated aggregate and the crushed slag, the alkali-resistant glass fiber, the machine-made sand powder, the pebbles and the quartz sand;
6) And adding the polycarboxylic acid high-efficiency water reducing agent and 80% of water into the stirred material, then continuously stirring, after stirring for half an hour, adding the remaining 20% of water, and continuously stirring for half an hour to finally obtain the recycled concrete.
Wherein the diameter of the concrete small block is not more than 20cm, the diameter of the waste concrete particle is not more than 3mm, the temperature of the dryer is 150 ℃, the time is 1 hour, the concentration of the glacial acetic acid solution is 10 percent, the glacial acetic acid solution and the polycarboxylic acid high-efficiency water reducing agent are auxiliary modifiers of the waste concrete, the alkali-resistant glass fiber is 100 percent inorganic fiber, and the fly ash silicate cement is prepared by grinding a mixture of silicate cement clinker, fly ash and a proper amount of gypsum.
Example two:
a preparation method of concrete for recycling waste concrete blocks comprises the following steps:
1) Selecting 250 parts of waste concrete blocks, 4 parts of polycarboxylic acid high-efficiency water reducing agent, 25 parts of slag, 16 parts of glacial acetic acid solution, 30 parts of alkali-resistant glass fiber, 50 parts of mineral powder, 30 parts of machine-made sand powder, 55 parts of fly ash silicate cement, 12.5 parts of pebbles, 20 parts of quartz sand and 240 parts of water;
2) Crushing the waste concrete blocks by a crusher to obtain small concrete blocks, putting the small concrete blocks into a crusher, crushing the small concrete blocks to obtain waste concrete particles, cleaning the waste concrete particles by clear water, removing fine concrete fragments, and drying by a dryer;
3) Putting the waste concrete particles obtained in the step 2) into a stirrer, adding a glacial acetic acid solution, and stirring at a low speed by the stirrer to enable the glacial acetic acid solution to fully react with the waste concrete particles;
4) Mixing fly ash portland cement and water, adding the mixture into a stirrer to stir at 100 revolutions per minute to prepare cement slurry, mixing the cement slurry with waste concrete particles, standing for 30 minutes, putting the mixture into a dryer to dry the mixture, and taking the dried mixture out to obtain recycled aggregate;
5) Crushing the slag, the alkali-resistant glass fiber, the machine-made sand powder, the pebbles and the quartz sand by a crusher, adding the crushed slag, the alkali-resistant glass fiber, the machine-made sand powder, the machine-made pebbles and the quartz sand into a stirrer after crushing, and adding the regenerated aggregate into the stirrer to fully stir the regenerated aggregate and the crushed slag, the alkali-resistant glass fiber, the machine-made sand powder, the pebbles and the quartz sand;
6) And adding the polycarboxylic acid high-efficiency water reducing agent and 80% of water into the stirred material, then continuously stirring, after stirring for half an hour, adding the remaining 20% of water, and continuously stirring for half an hour to finally obtain the recycled concrete.
Wherein the diameter of the concrete small block is not more than 20cm, the diameter of the waste concrete particle is not more than 3mm, the temperature of the dryer is 160 ℃, the time is 1 hour, the concentration of the glacial acetic acid solution is 12 percent, the glacial acetic acid solution and the polycarboxylic acid high-efficiency water reducing agent are auxiliary modifiers of the waste concrete, the alkali-resistant glass fiber is 100 percent inorganic fiber, and the fly ash silicate cement is prepared by grinding a mixture of silicate cement clinker, fly ash and a proper amount of gypsum.
Example three:
a preparation method of concrete by recycling waste concrete blocks comprises the following steps:
1) Selecting 300 parts of waste concrete blocks, 6 parts of polycarboxylic acid high-efficiency water reducing agent, 30 parts of slag, 18 parts of glacial acetic acid solution, 35 parts of alkali-resistant glass fiber, 60 parts of mineral powder, 35 parts of machine-made sand powder, 60 parts of fly ash silicate cement, 15 parts of pebbles, 25 parts of quartz sand and 280 parts of water;
2) Crushing the waste concrete blocks by a crusher to obtain small blocky concrete blocks, putting the concrete blocks into a crusher, crushing the concrete blocks to obtain waste concrete particles, cleaning the waste concrete particles by clear water, removing fine concrete powder, and drying by a dryer;
3) Putting the waste concrete particles obtained in the step 2) into a stirrer, adding a glacial acetic acid solution, and stirring at a low speed by the stirrer to ensure that the glacial acetic acid solution and the waste concrete particles fully react;
4) Mixing fly ash portland cement and water, adding the mixture into a stirrer to stir at 100 revolutions per minute to prepare cement slurry, mixing the cement slurry with waste concrete particles, standing for 30 minutes, putting the mixture into a dryer to dry the mixture, and taking the dried mixture out to obtain recycled aggregate;
5) Crushing the slag, the alkali-resistant glass fiber, the machine-made sand powder, the pebbles and the quartz sand by a crusher, adding the crushed slag, the alkali-resistant glass fiber, the machine-made sand powder, the machine-made pebbles and the quartz sand into a stirrer after crushing, and adding the regenerated aggregate into the stirrer to fully stir the regenerated aggregate and the crushed slag, the alkali-resistant glass fiber, the machine-made sand powder, the pebbles and the quartz sand;
6) And adding the polycarboxylic acid high-efficiency water reducing agent and 80% of water into the stirred material, then continuously stirring, adding the remaining 20% of water after stirring for half an hour, and continuously stirring for half an hour to finally obtain the recycled concrete.
Wherein the diameter of the concrete small block is not more than 20cm, the diameter of the waste concrete particle is not more than 3mm, the temperature of the dryer is 180 ℃, the time is 1 hour, the concentration of the glacial acetic acid solution is 15%, the glacial acetic acid solution and the polycarboxylic acid high-efficiency water reducing agent are auxiliary modifiers of the waste concrete, the alkali-resistant glass fiber is 100% inorganic fiber, and the fly ash silicate cement is prepared by mixing silicate cement clinker, fly ash and a proper amount of gypsum and grinding.
The beneficial effects of the invention are:
the waste concrete blocks, the polycarboxylic acid high-efficiency water reducing agent, the slag, the glacial acetic acid solution, the alkali-resistant glass fiber, the machine-made sand powder, the fly ash silicate cement, the pebbles, the quartz sand and the water are selected, the waste concrete blocks are crushed, the glacial acetic acid solution is added, the effect of improving the surface of the regenerated particles is achieved, the performance of regenerated aggregates is improved, the fly ash silicate cement and the water are stirred and mixed and then added into the waste concrete, the regenerated aggregates are obtained, the slag, the alkali-resistant glass fiber, the machine-made sand powder, the pebbles, the quartz sand and the regenerated aggregates are mixed through a stirrer, the water and the polycarboxylic acid high-efficiency water reducing agent are added, the strength of the concrete is improved, gaps of the concrete are reduced, and the overall structural strength of the regenerated concrete is good.
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 (6)
1. A preparation method of concrete recycled by waste concrete blocks is characterized by comprising the following steps:
1) Selecting 200-300 parts of waste concrete blocks, 2-6 parts of polycarboxylic acid high-efficiency water reducing agent, 20-30 parts of slag, 14-18 parts of glacial acetic acid solution, 25-35 parts of alkali-resistant glass fiber, 25-35 parts of machine-made sandstone powder, 50-60 parts of fly ash silicate cement, 10-15 parts of pebbles, 15-25 parts of quartz sand and 200-280 parts of water;
2) Crushing the waste concrete blocks by a crusher to obtain small blocky concrete blocks, putting the concrete blocks into a crusher, crushing the concrete blocks to obtain waste concrete particles, cleaning the waste concrete particles by clear water, removing fine concrete powder, and drying by a dryer;
3) Putting the waste concrete particles obtained in the step 2) into a stirrer, adding a glacial acetic acid solution, and stirring at a low speed by the stirrer to enable the glacial acetic acid solution to fully react with the waste concrete particles;
4) Mixing fly ash portland cement and water, adding the mixture into a stirrer to stir at 100 revolutions per minute to prepare cement slurry, mixing the cement slurry with waste concrete particles, standing for 30 minutes, putting the mixture into a dryer to dry the mixture, and taking the dried mixture out to obtain recycled aggregate;
5) Crushing the slag, the alkali-resistant glass fiber, the machine-made sand powder, the pebbles and the quartz sand by a crusher, adding the crushed slag, the alkali-resistant glass fiber, the machine-made sand powder, the machine-made pebbles and the quartz sand into a stirrer after crushing, and adding the regenerated aggregate into the stirrer to fully stir the regenerated aggregate and the crushed slag, the alkali-resistant glass fiber, the machine-made sand powder, the pebbles and the quartz sand;
6) And adding the polycarboxylic acid high-efficiency water reducing agent and 80% of water into the stirred material, then continuously stirring, adding the remaining 20% of water after stirring for half an hour, and continuously stirring for half an hour to finally obtain the recycled concrete.
2. The method for preparing concrete by recycling waste concrete blocks according to claim 1, wherein the method comprises the following steps: the diameter of the concrete small block is not more than 20cm.
3. The method for preparing concrete by recycling waste concrete blocks according to claim 1, wherein the method comprises the following steps: the diameter of the waste concrete particles is not more than 3mm.
4. The method for preparing concrete by recycling waste concrete blocks according to claim 1, wherein the method comprises the following steps: the temperature of the dryer is 150-180 ℃, and the time is 1 hour.
5. The method for preparing concrete by recycling waste concrete blocks according to claim 1, wherein the method comprises the following steps: the concentration of the glacial acetic acid solution is 10% -15%, and the glacial acetic acid solution and the polycarboxylic acid high-efficiency water reducing agent are auxiliary modifiers of the waste concrete.
6. The method for preparing concrete by recycling waste concrete blocks according to claim 1, wherein the method comprises the following steps: the alkali-resistant glass fiber is 100% inorganic fiber, and the fly ash portland cement is prepared by mixing portland cement clinker, fly ash and a proper amount of gypsum and then grinding the mixture.
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| CN202211157571.7A CN115611572A (en) | 2022-09-22 | 2022-09-22 | Concrete preparation method for recycling waste concrete blocks |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112939551A (en) * | 2021-04-21 | 2021-06-11 | 河北江砼新型建材有限公司 | Method for preparing recycled concrete by using construction waste |
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| CN114230281A (en) * | 2021-12-27 | 2022-03-25 | 中交二公局第三工程有限公司 | Recycled concrete capable of reducing porosity and preparation method thereof |
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2022
- 2022-09-22 CN CN202211157571.7A patent/CN115611572A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112939551A (en) * | 2021-04-21 | 2021-06-11 | 河北江砼新型建材有限公司 | Method for preparing recycled concrete by using construction waste |
| CN113149539A (en) * | 2021-06-03 | 2021-07-23 | 金华职业技术学院 | Preparation method of recycled concrete with high recovery rate |
| CN114230281A (en) * | 2021-12-27 | 2022-03-25 | 中交二公局第三工程有限公司 | Recycled concrete capable of reducing porosity and preparation method thereof |
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| 苏卿主编: "《土木工程材料 第四版》", 武汉理工大学出版社, pages: 51 * |
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