CN107814530B - High-strength recycled concrete porous brick - Google Patents
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- CN107814530B CN107814530B CN201710929232.9A CN201710929232A CN107814530B CN 107814530 B CN107814530 B CN 107814530B CN 201710929232 A CN201710929232 A CN 201710929232A CN 107814530 B CN107814530 B CN 107814530B
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- 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
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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- 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
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- 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
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- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
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- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
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- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/40—Porous or lightweight materials
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Abstract
The invention discloses a high-strength recycled concrete perforated brick, and belongs to the technical field of building materials. Weighing 120-180 parts of modified waste aggregate, 15-25 parts of fly ash, 35-50 parts of cement, 12-18 parts of water, 5-8 parts of additive and 8-12 parts of filler in sequence, adding the modified waste aggregate, the fly ash, the cement and the filler into a stirrer for stirring, adding the water and the additive into the stirrer for stirring, continuously stirring to obtain a blank, filling the blank into a mold, performing vibration and pressure molding in a brick molding machine, standing and demolding to obtain a pretreated brick, performing manual curing on the pretreated brick, and performing natural curing to obtain the high-strength recycled concrete porous brick. The high-strength recycled concrete porous brick prepared by the invention has higher compressive strength and water resistance.
Description
Technical Field
The invention discloses a high-strength recycled concrete perforated brick, and belongs to the technical field of building materials.
Background
Mass production of concrete consumes a large amount of natural resources such as sandstone. Meanwhile, a large amount of waste concrete is generated in various aspects such as reaching the service life of the building or transforming major infrastructure, removing cities, damaging the building and the like. The accumulation of construction waste such as waste concrete not only occupies a large amount of arable land, but also has high cost for treating the construction waste. The waste concrete is recycled again, and can be used as aggregate of recycled concrete in a newly-built building after being crushed and graded, so that the treatment problem of the waste concrete is fundamentally solved, the resources are saved, the pollution is reduced, the recycling economy development mode is met, the concrete structure can walk on a road with sustainable development, and the remarkable social benefit, economic benefit and environmental protection benefit are achieved.
The recycled concrete perforated brick is a perforated brick prepared by utilizing waste broken bricks and broken concrete to form recycled aggregate and carrying out vibration extrusion molding on the prepared recycled aggregate concrete. In view of the particularity of the recycled concrete perforated brick aggregate, corresponding experimental research on the water resistance of the recycled concrete perforated brick aggregate is necessary. After the solid material is soaked in water, the attraction between the molecules of the substance is reduced under the action of water molecules, so that the internal structural strength of the substance is reduced, and in addition, the strength is also reduced due to the dissolution of soluble substances. The water resistance of a material is generally measured by water absorption, and the smaller the value, the lower the water content of the material after saturation, and the better the water resistance.
In addition, compared with natural aggregate, the recycled aggregate has the problems of low strength, high water absorption, low compactness, rough surface, multiple cracks and uneven properties among particles, so that the recycled aggregate concrete has the problems of low slump, poor fluidity, low compressive strength, low elastic modulus and the like. Secondly, the compressive strength of the recycled concrete perforated brick is also reduced by the porous structure in the system of the recycled concrete perforated brick, and the recycled concrete perforated brick is easy to break under the impact of external force, so that the popularization and application of the recycled concrete perforated brick are seriously influenced.
Therefore, the improvement of the mechanical property and the water resistance of the recycled concrete porous brick becomes a problem to be solved by popularization and application in the field of building materials and multiple fields.
Disclosure of Invention
The invention mainly solves the technical problems that: aiming at the problems of poor water resistance and mechanical property of the traditional recycled concrete porous brick, the high-strength recycled concrete porous brick is provided.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a high-strength recycled concrete perforated brick is composed of the following raw materials in parts by weight:
120-180 parts of modified waste aggregate
15-25 parts of fly ash
35-50 parts of cement
12-18 parts of water
5-8 parts of additive
8-12 parts of filler
The preparation method of the modified waste aggregate comprises the following steps:
mixing broken brick materials and broken concrete, crushing in a crusher, sieving to obtain a refined mixture, mixing the refined mixture with water, carbonizing in a carbon dioxide atmosphere, freeze-drying to obtain a pretreated mixture, mixing the pretreated mixture with tetraethoxysilane, carrying out constant-temperature constant-pressure closed reaction in a trimethylaluminum atmosphere, cooling, and filtering to obtain a filter cake, namely the modified waste aggregate;
the preparation method of the additive comprises the following steps:
mixing chitosan and water for swelling, sequentially adding water and glutaraldehyde which are 40-50 times of the mass of the chitosan and 0.5-0.7 time of the mass of the chitosan, and stirring and mixing to obtain an additive;
the preparation method of the high-strength recycled concrete perforated brick comprises the following steps:
(1) weighing the raw materials in parts by weight;
(2) adding the modified waste aggregate, the fly ash, the cement and the filler into a stirrer for stirring, adding the water and the additive into the stirrer for continuous stirring to obtain a blank, putting the blank into a mold, performing vibration and compression molding in a brick molding machine, standing, demolding to obtain a pretreated brick, performing artificial curing on the pretreated brick, and performing natural curing to obtain the high-strength recycled concrete porous brick.
The cement is any one of portland cement, aluminate cement or sulphoaluminate cement.
The filler is any one of glass fiber, ceramic fiber or metal fiber.
The invention has the beneficial effects that:
(1) the invention uses modified waste aggregate in preparing recycled concrete perforated brick, firstly, the refined mixture of broken brick material and broken concrete is carbonized in excess water, and then ethyl orthosilicate is added to carry out high-temperature constant-pressure closed reaction, on one hand, the carbonization can enrich the pore structure in the aggregate, and the residual calcium hydroxide in the concrete reacts with carbon dioxide and water, a certain amount of water-soluble calcium bicarbonate is generated in the pores, so that the internal pores of the concrete broken material are opened, on the other hand, after the high-temperature constant-pressure closed reaction, the calcium bicarbonate can be gradually changed into calcium oxide, water and carbon dioxide, the ethyl orthosilicate can carry out hydrolysis reaction after encountering the water generated when the calcium bicarbonate is decomposed, so as to generate silicon dioxide in the pores of the aggregate, and the pores of the aggregate can be filled due to the generation of the silicon dioxide and the calcium oxide, thereby increasing the density of the aggregate, the compressive strength of the product is improved, and then trimethyl aluminum gas is introduced when the ethyl orthosilicate and the carbonized refined mixture react, the trimethyl aluminum can react with water generated when calcium bicarbonate in the refined mixture is decomposed to generate aluminum oxide, and in the subsequent preparation process, the aluminum oxide, silicon dioxide and calcium oxide can participate in the hydration reaction of cement to generate a gel network in the pore structure of the system, so that the bonding force among all substances in the system is enhanced, and the compressive strength of the product is enhanced;
(2) the additive is used in the preparation of the recycled concrete porous brick, chitosan forms a certain crosslinking system after being treated, and after the blank is added, a new crosslinking network can be formed in the pore structure of the aggregate with the generated silicon dioxide and calcium oxide, so that the density of the aggregate is improved, the compression resistance of the product is improved, the crosslinking system of the chitosan has good water retention performance and can carry a certain amount of water, and after the chitosan is added into the system, the hydration reaction of the system can be effectively ensured to be more sufficient, so that the density of the system is further improved, and the water resistance and the compression resistance of the product are further improved.
Drawings
FIG. 1 shows the results of the water resistance and compression resistance tests of the high-strength recycled concrete perforated brick.
Detailed Description
Mixing broken brick materials and broken concrete according to the mass ratio of 3: 1-4: 1, adding the mixed materials into a grinder to be ground for 15-30 min, sieving the ground materials with a 20-30-mesh sieve to obtain a refined mixture, and mixing the refined mixture with water according to a mass ratio of 1: 8-1: 12, mixing the mixture in a reaction kettle, introducing carbon dioxide into the reaction kettle at a speed of 50-60 mL/min, carbonizing the mixture at a constant temperature of 28-40 ℃ and a rotation speed of 260-280 r/min for 10-12 h in a carbon dioxide atmosphere to obtain a carbonized mixture, freeze-drying the carbonized mixture to obtain a pretreatment mixture, and mixing the pretreatment mixture and ethyl orthosilicate according to a mass ratio of 1: 4-1: 5, mixing the mixture in a reaction kettle, introducing nitrogen into the reaction kettle at a speed of 5-15 mL/min, discharging air in the reaction kettle, adding trimethylaluminum which is 0.2-0.4 times of the mass of the pretreated mixture into the reaction kettle, sealing the reaction kettle, carrying out sealed reaction for 4-5 hours at a constant temperature and a constant pressure under the conditions of a temperature of 500-550 ℃, a rotating speed of 240-300 r/min and a pressure of 1.5-2.0 MPa, naturally cooling to room temperature, and filtering to obtain a filter cake, namely the modified waste aggregate; mixing chitosan and water according to a mass ratio of 1: 10-1: 12, mixing the mixture in a beaker, swelling for 1-2 hours, adding water with the mass 40-50 times that of chitosan and glutaraldehyde with the mass 0.5-0.7 time that of the chitosan into the beaker, moving the beaker into a digital display constant temperature speed measurement magnetic stirrer, and carrying out constant temperature stirring reaction for 90-120 min under the conditions that the temperature is 30-35 ℃ and the rotating speed is 280-320 r/min to obtain an additive; weighing 120-180 parts of modified waste aggregate, 15-25 parts of fly ash, 35-50 parts of cement, 12-18 parts of water, 5-8 parts of additive and 8-12 parts of filler in sequence according to parts by weight, firstly adding the modified waste aggregate, the fly ash, the cement and the filler into a stirrer to be stirred for 15-30 min, then sequentially adding the water and the additive into the stirrer to be continuously stirred for 20-35 min, discharging to obtain a blank, putting the blank into a mold, and the mould is moved into a brick forming machine for vibration pressing forming, the blank after vibration pressing forming and the mould are kept still for 1 day at room temperature, and demolding to obtain a pretreated brick block, transferring the pretreated brick block into a manual curing room, performing manual curing for 8-10 days under the conditions that the temperature is 20-25 ℃ and the humidity is 80-90% to obtain a manual curing brick block, transferring the manual curing brick block to the outdoor, and performing dark curing for 20-22 days to obtain the high-strength recycled concrete perforated brick. The cement is any one of portland cement, aluminate cement or sulphoaluminate cement. The filler is any one of glass fiber, ceramic fiber or metal fiber.
Example 1
Mixing broken brick materials and broken concrete according to a mass ratio of 4: 1, adding the mixed materials into a grinder to be ground for 30min, sieving the ground materials by a 30-mesh sieve to obtain a refined mixture, and mixing the refined mixture and water according to a mass ratio of 1: 12, mixing the mixture in a reaction kettle, introducing carbon dioxide into the reaction kettle at a speed of 60mL/min, carbonizing the mixture at a constant temperature of 40 ℃ and a rotating speed of 280r/min for 12 hours in a carbon dioxide atmosphere to obtain a carbonized mixture, freeze-drying the carbonized mixture to obtain a pretreatment mixture, and mixing the pretreatment mixture with tetraethoxysilane according to a mass ratio of 1: 5, mixing the mixture in a reaction kettle, introducing nitrogen into the reaction kettle at a speed of 15mL/min, discharging air in the reaction kettle, adding trimethylaluminum with the mass being 0.4 times that of the pretreated mixture into the reaction kettle, sealing the reaction kettle, carrying out closed reaction for 5 hours at the constant temperature and the constant pressure under the conditions that the temperature is 550 ℃, the rotating speed is 300r/min and the pressure is 2.0MPa, naturally cooling to the room temperature, and filtering to obtain a filter cake, namely the modified waste aggregate; mixing chitosan and water according to a mass ratio of 1: 12, mixing the mixture in a beaker, swelling for 2 hours, adding water with the mass of 50 times that of the chitosan and glutaraldehyde with the mass of 0.7 time that of the chitosan into the beaker, moving the beaker into a digital display constant temperature speed measurement magnetic stirrer, and stirring and reacting for 120min at constant temperature under the conditions that the temperature is 35 ℃ and the rotating speed is 320r/min to obtain an additive; weighing 180 parts of modified waste aggregate, 25 parts of fly ash, 50 parts of cement, 18 parts of water, 8 parts of additive and 12 parts of filler in sequence, adding the modified waste aggregate, the fly ash, the cement and the filler into a stirrer, stirring for 30min, adding the water and the additive into the stirrer in sequence, continuing stirring for 35min, discharging to obtain a blank, filling the blank into a mold, moving the mold into a brick forming machine for vibration and compression forming, standing the vibration and compression formed blank and the mold for 1 day at room temperature, demolding to obtain a pretreated brick, moving the pretreated brick into a manual curing chamber, manually curing for 10 days at the temperature of 25 ℃ and the humidity of 90% to obtain a manually cured brick, moving the manually cured brick out of the sun, and curing for 22 days to obtain the high-strength recycled concrete perforated brick. The cement is portland cement. The filler is glass fiber.
Example 2
Mixing broken brick materials and broken concrete according to a mass ratio of 4: 1, adding the mixed materials into a grinder to be ground for 30min, sieving the ground materials by a 30-mesh sieve to obtain a refined mixture, and mixing the refined mixture and water according to a mass ratio of 1: 12, mixing the mixture in a reaction kettle, introducing carbon dioxide into the reaction kettle at a speed of 60mL/min, carbonizing the mixture at a constant temperature of 40 ℃ and a rotating speed of 280r/min under the atmosphere of carbon dioxide for 12 hours to obtain a carbonized mixture, freeze-drying the carbonized mixture to obtain a pre-treated mixture, adding the pre-treated mixture into the reaction kettle, introducing nitrogen into the reaction kettle at a speed of 15mL/min, discharging air in the reaction kettle, adding trimethylaluminum with the mass of 0.4 time of the pre-treated mixture into the reaction kettle, sealing the reaction kettle, reacting for 5 hours at a constant temperature and a constant pressure under the conditions of 550 ℃ and a rotating speed of 300r/min and a pressure of 2.0MPa, naturally cooling to room temperature, and filtering to obtain a filter cake, thus obtaining the modified waste aggregate; mixing chitosan and water according to a mass ratio of 1: 12, mixing the mixture in a beaker, swelling for 2 hours, adding water with the mass of 50 times that of the chitosan and glutaraldehyde with the mass of 0.7 time that of the chitosan into the beaker, moving the beaker into a digital display constant temperature speed measurement magnetic stirrer, and stirring and reacting for 120min at constant temperature under the conditions that the temperature is 35 ℃ and the rotating speed is 320r/min to obtain an additive; weighing 180 parts of modified waste aggregate, 25 parts of fly ash, 50 parts of cement, 18 parts of water, 8 parts of additive and 12 parts of filler in sequence, adding the modified waste aggregate, the fly ash, the cement and the filler into a stirrer, stirring for 30min, adding the water and the additive into the stirrer in sequence, continuing stirring for 35min, discharging to obtain a blank, filling the blank into a mold, moving the mold into a brick forming machine for vibration and compression forming, standing the vibration and compression formed blank and the mold for 1 day at room temperature, demolding to obtain a pretreated brick, moving the pretreated brick into a manual curing chamber, manually curing for 10 days at the temperature of 25 ℃ and the humidity of 90% to obtain a manually cured brick, moving the manually cured brick out of the sun, and curing for 22 days to obtain the high-strength recycled concrete perforated brick. The cement is portland cement. The filler is glass fiber.
Example 3
Mixing broken brick materials and broken concrete according to a mass ratio of 4: 1, adding the mixed materials into a grinder to be ground for 30min, sieving the ground materials by a 30-mesh sieve to obtain a refined mixture, and mixing the refined mixture and water according to a mass ratio of 1: 12, mixing the mixture in a reaction kettle, introducing carbon dioxide into the reaction kettle at a speed of 60mL/min, carbonizing the mixture at a constant temperature of 40 ℃ and a rotating speed of 280r/min for 12 hours in a carbon dioxide atmosphere to obtain a carbonized mixture, freeze-drying the carbonized mixture to obtain a pretreatment mixture, and mixing the pretreatment mixture with tetraethoxysilane according to a mass ratio of 1: 5, mixing the mixture in a reaction kettle, introducing nitrogen into the reaction kettle at the speed of 15mL/min, discharging the air in the reaction kettle, sealing the reaction kettle, carrying out sealed reaction for 5 hours at the constant temperature and the constant pressure under the conditions that the temperature is 550 ℃, the rotating speed is 300r/min and the pressure is 2.0MPa, naturally cooling to the room temperature, and filtering to obtain a filter cake, namely the modified waste aggregate; mixing chitosan and water according to a mass ratio of 1: 12, mixing the mixture in a beaker, swelling for 2 hours, adding water with the mass of 50 times that of the chitosan and glutaraldehyde with the mass of 0.7 time that of the chitosan into the beaker, moving the beaker into a digital display constant temperature speed measurement magnetic stirrer, and stirring and reacting for 120min at constant temperature under the conditions that the temperature is 35 ℃ and the rotating speed is 320r/min to obtain an additive; weighing 180 parts of modified waste aggregate, 25 parts of fly ash, 50 parts of cement, 18 parts of water, 8 parts of additive and 12 parts of filler in sequence, adding the modified waste aggregate, the fly ash, the cement and the filler into a stirrer, stirring for 30min, adding the water and the additive into the stirrer in sequence, continuing stirring for 35min, discharging to obtain a blank, filling the blank into a mold, moving the mold into a brick forming machine for vibration and compression forming, standing the vibration and compression formed blank and the mold for 1 day at room temperature, demolding to obtain a pretreated brick, moving the pretreated brick into a manual curing chamber, manually curing for 10 days at the temperature of 25 ℃ and the humidity of 90% to obtain a manually cured brick, moving the manually cured brick out of the sun, and curing for 22 days to obtain the high-strength recycled concrete perforated brick. The cement is portland cement. The filler is glass fiber.
Example 4
Mixing broken brick materials and broken concrete according to a mass ratio of 4: 1, adding the mixed materials into a grinder to be ground for 30min, sieving the ground materials by a 30-mesh sieve to obtain a refined mixture, and mixing the refined mixture and water according to a mass ratio of 1: 12, mixing the mixture in a reaction kettle, introducing carbon dioxide into the reaction kettle at a speed of 60mL/min, carbonizing the mixture at a constant temperature of 40 ℃ and a rotating speed of 280r/min for 12 hours in a carbon dioxide atmosphere to obtain a carbonized mixture, freeze-drying the carbonized mixture to obtain a pretreatment mixture, and mixing the pretreatment mixture with tetraethoxysilane according to a mass ratio of 1: 5, mixing the mixture in a reaction kettle, introducing nitrogen into the reaction kettle at a speed of 15mL/min, discharging air in the reaction kettle, adding trimethylaluminum with the mass being 0.4 times that of the pretreated mixture into the reaction kettle, sealing the reaction kettle, carrying out closed reaction for 5 hours at the constant temperature and the constant pressure under the conditions that the temperature is 550 ℃, the rotating speed is 300r/min and the pressure is 2.0MPa, naturally cooling to the room temperature, and filtering to obtain a filter cake, namely the modified waste aggregate; weighing 180 parts of modified waste aggregate, 25 parts of fly ash, 50 parts of cement, 18 parts of water and 12 parts of filler in sequence according to parts by weight, adding the modified waste aggregate, the fly ash, the cement and the filler into a stirrer, stirring for 30min, adding the water into the stirrer in sequence, continuously stirring for 35min, discharging to obtain a blank, filling the blank into a mold, moving the mold into a brick forming machine for vibration and compression forming, standing the vibration and compression formed blank and the mold for 1 day at room temperature, demolding to obtain a pretreated brick, moving the pretreated brick into a manual curing chamber, manually curing the brick for 10 days at the temperature of 25 ℃ and the humidity of 90 percent to obtain a manually cured brick, moving the manually cured brick out of the chamber, and curing for 22 days in a dark place to obtain the high-strength recycled concrete porous brick. The cement is portland cement. The filler is glass fiber.
Comparative example: a recycled concrete perforated brick produced by Beijing certain novel building materials Co.
The high-strength recycled concrete porous bricks obtained in examples 1 to 4 and comparative products were subjected to performance tests by the following specific test methods:
1. water resistance: detection was performed according to GB/T2542. Cleaning the surface of the brick body of the test piece by using a brush respectively, putting the brick body into a drying oven at 100 ℃ for drying for 24 hours, and then weighing the brick body as m0. And then the dried brick body is put into a water tank with the temperature of 20 ℃. After 24h of soaking, the surface water is wiped off by a towel, and the weight is immediately weighed as m24Water absorption (W) of the fired shale ganged brick24) The calculation is performed according to equation (1):
W24=（（m24-m0）/m0）×100% （1）；
2. compression resistance: detection was performed according to GB/T2542. After the test piece is maintained for 28 days, the mortar setting surface and the mortar spreading surface are treated by fine sand mortar to form planes which are parallel to each other, and the compressive strength of the test piece is measured.
The specific detection result is illustrated in the attached drawings.
As can be seen from the detection results of figure 1, the high-strength recycled concrete perforated brick prepared by the technical scheme of the invention has the characteristics of excellent mechanical property and water resistance, and has wide prospects in the development of the building material industry.
Claims (3)
1. The utility model provides a high strength recycled concrete perforated brick which characterized in that: the composite material is prepared from the following raw materials in parts by weight:
120-180 parts of modified waste aggregate
15-25 parts of fly ash
35-50 parts of cement
12-18 parts of water
5-8 parts of additive
8-12 parts of filler
The preparation method of the modified waste aggregate comprises the following steps:
mixing broken brick materials and broken concrete, crushing in a crusher, sieving to obtain a refined mixture, mixing the refined mixture with water, carbonizing in a carbon dioxide atmosphere, freeze-drying to obtain a pretreated mixture, mixing the pretreated mixture with tetraethoxysilane, carrying out constant-temperature constant-pressure closed reaction in a trimethylaluminum atmosphere, cooling, and filtering to obtain a filter cake, namely the modified waste aggregate;
the preparation method of the additive comprises the following steps:
mixing chitosan and water for swelling, sequentially adding water and glutaraldehyde which are 40-50 times of the mass of the chitosan and 0.5-0.7 time of the mass of the chitosan, and stirring and mixing to obtain an additive;
the preparation method of the high-strength recycled concrete perforated brick comprises the following steps:
weighing the raw materials in parts by weight;
(2) adding the modified waste aggregate, the fly ash, the cement and the filler into a stirrer for stirring, adding the water and the additive into the stirrer for continuous stirring to obtain a blank, putting the blank into a mold, performing vibration and compression molding in a brick molding machine, standing, demolding to obtain a pretreated brick, performing artificial curing on the pretreated brick, and performing natural curing to obtain the high-strength recycled concrete porous brick.
2. The high strength recycled concrete perforated brick according to claim 1, wherein: the cement is any one of portland cement, aluminate cement or sulphoaluminate cement.
3. The high strength recycled concrete perforated brick according to claim 1, wherein: the filler is any one of glass fiber, ceramic fiber or metal fiber.
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| US10927042B2 (en) | 2013-06-25 | 2021-02-23 | Carboncure Technologies, Inc. | Methods and compositions for concrete production |
| US9376345B2 (en) | 2013-06-25 | 2016-06-28 | Carboncure Technologies Inc. | Methods for delivery of carbon dioxide to a flowable concrete mix |
| WO2015154174A1 (en) | 2014-04-07 | 2015-10-15 | Carboncure Technologies, Inc. | Integrated carbon dioxide capture |
| AU2017249444B2 (en) | 2016-04-11 | 2022-08-18 | Carboncure Technologies Inc. | Methods and compositions for treatment of concrete wash water |
| AU2018288555A1 (en) | 2017-06-20 | 2020-01-30 | Carboncure Technologies Inc. | Methods and compositions for treatment of concrete wash water |
| CN108383128B (en) * | 2018-05-15 | 2020-04-28 | 佛山市高建硅胶实业有限公司 | Preparation method of rice hull-based micro-nano structure porous silicon dioxide |
| CN111056792A (en) * | 2019-12-17 | 2020-04-24 | 佛山科学技术学院 | Composite water absorption brick and preparation method thereof |
| CN111960766B (en) * | 2020-08-21 | 2022-04-29 | 顺裕（龙岩）混凝土有限公司 | High-strength recycled concrete and preparation method thereof |
| EP4237385A1 (en) * | 2020-10-29 | 2023-09-06 | Carboncure Technologies Inc. | Carbonation of concrete products |
| CN114573361B (en) * | 2022-04-18 | 2024-01-30 | 陕西清水川能源股份有限公司 | Production method and system of environment-friendly carbon-fixing aerated brick |
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| CN102964093A (en) * | 2012-11-08 | 2013-03-13 | 沈阳理工大学 | Recycled concrete brick and preparation method thereof |
| CN103290753A (en) * | 2013-05-28 | 2013-09-11 | 深圳海龙建筑制品有限公司 | Nano-composite environment-friendly water permeable brick and production method thereof |
| CN104609880A (en) * | 2014-12-18 | 2015-05-13 | 齐齐哈尔越峰科技有限公司 | Recycled aggregate-containing porous non-fired product preparation method |
| CN104628316A (en) * | 2014-12-18 | 2015-05-20 | 齐齐哈尔越峰科技有限公司 | Preparation method of non-fired building block containing recycled aggregates |
| CN107140903A (en) * | 2017-04-21 | 2017-09-08 | 张静 | A kind of preparation method of regenerated aggregate concrete |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102964093A (en) * | 2012-11-08 | 2013-03-13 | 沈阳理工大学 | Recycled concrete brick and preparation method thereof |
| CN103290753A (en) * | 2013-05-28 | 2013-09-11 | 深圳海龙建筑制品有限公司 | Nano-composite environment-friendly water permeable brick and production method thereof |
| CN104609880A (en) * | 2014-12-18 | 2015-05-13 | 齐齐哈尔越峰科技有限公司 | Recycled aggregate-containing porous non-fired product preparation method |
| CN104628316A (en) * | 2014-12-18 | 2015-05-20 | 齐齐哈尔越峰科技有限公司 | Preparation method of non-fired building block containing recycled aggregates |
| CN107140903A (en) * | 2017-04-21 | 2017-09-08 | 张静 | A kind of preparation method of regenerated aggregate concrete |
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