CN111087188A - Concrete processing technology doped with waste concrete blocks - Google Patents
Concrete processing technology doped with waste concrete blocks Download PDFInfo
- Publication number
- CN111087188A CN111087188A CN201911393842.7A CN201911393842A CN111087188A CN 111087188 A CN111087188 A CN 111087188A CN 201911393842 A CN201911393842 A CN 201911393842A CN 111087188 A CN111087188 A CN 111087188A
- Authority
- CN
- China
- Prior art keywords
- concrete
- waste
- blocks
- doped
- prepared
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/003—Methods for mixing
-
- 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
-
- 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
-
- 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
- C04B20/023—Chemical treatment
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Civil Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Inorganic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to a concrete processing technology of doped waste concrete blocks, which comprises the following processing steps: s1, pretreating the waste concrete blocks to obtain concrete fine blocks; s2, decomposing the surface of the concrete fine block to obtain a surface-modified concrete fine block, wherein a strong acid salt layer is formed on the surface of the concrete fine block; s3, preparing coarse aggregate, and preparing the coarse aggregate for later use; s4, preparing a cementing material for later use; and S5, preparing concrete, namely adding the coarse aggregate prepared in the step S3, the cementing material prepared in the step S4, the additive and water into a concrete stirrer according to the weight ratio, wherein the stirring speed of the concrete stirrer is 200-400 r/min, and the stirring time is 10-20 min, so that the finished concrete is prepared. The processing technology of the invention recycles the waste concrete blocks and the waste rubber particles as raw materials and improves the comprehensive performance of the concrete.
Description
Technical Field
The invention relates to the technical field of concrete, in particular to a concrete processing technology doped with waste concrete blocks.
Background
Concrete is the most widely used building material in modern times, is a general name of engineering composite materials formed by cementing aggregate into a whole by cementing materials, and is widely applied to the engineering fields of underground engineering, bridges, water pools, water towers, culverts, tunnels, wharfs, dams, hydropower stations and the like. The existing cement is used as a main component of concrete, and can discharge a large amount of dust and harmful gas in the production process, thereby seriously polluting the environment. The traditional cement concrete feeding and stirring method is that the metered cement, admixture, fine aggregate, coarse aggregate, water and admixture are mixed together according to the mixing proportion and stirred.
The waste rubber is one of solid industrial wastes, and with the development of the rubber industry and the automobile industry, a large amount of waste tires, rubber products and leftover materials thereof are increased continuously. In 2006, the yield of waste tires in China exceeds 1 hundred million, and the tires not only pose a great threat to the environment, but also are serious waste of resources, so that the treatment of the waste tires becomes a serious social problem. Meanwhile, the solid waste generated by demolishing buildings (structures) in China is over 2 hundred million tons every year, and most of the solid waste is waste concrete. As the amount of waste concrete produced increases year by year, passive extensive treatment alone is not sufficient, and the recycling of concrete must be designed and planned from the source.
The traditional Chinese patent application with the publication number of CN109928684A discloses concrete and a preparation process thereof, wherein the concrete comprises, by weight, 160 parts of water 150-.
The above technical solution has the following disadvantages: straw powder, a coupling agent, a recycled aggregate and the like are added into the concrete, the addition of the raw materials can cause that a cementing material cannot be fully hydrated, a large number of bubbles are easily formed among the components, and the concrete becomes a link with weaker strength and influences the workability, strength and durability of the concrete.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a concrete processing technology doped with waste concrete blocks, wherein the waste concrete blocks and waste rubber particles are recycled as raw materials in the processing technology, and the comprehensive performance of the concrete is improved.
The above object of the present invention is achieved by the following technical solutions:
a concrete processing technology doped with waste concrete blocks comprises the following processing steps:
s1, pretreatment of the waste concrete blocks: washing the recycled waste concrete blocks with water to remove impurities adhered to the surfaces of the waste concrete blocks, feeding the washed waste concrete blocks into a jaw crusher for crushing treatment, separating reinforcing steel bars doped in concrete fragments after the crushing treatment, and finally feeding the concrete fragments into a crusher for crushing treatment to obtain concrete fine blocks;
s2, decomposition treatment of the surface of the concrete piece: putting the prepared concrete nubbles into a material mixing machine, spraying hydrofluoric acid solution and hydrofluoric acid solution into the material mixing machine while continuously carrying out material mixing operation by the material mixing machine, wherein the spraying amount of the hydrofluoric acid solution is 12-15% of the total weight of the concrete nubbles, the spraying amount of the hydrochloric acid solution is 20-25% of the total weight of the concrete nubbles, standing and reacting for 30-40 minutes after spraying is finished to prepare the concrete nubbles with modified surfaces, and strong acid salt layers are formed on the surfaces of the concrete nubbles;
s3, preparation of coarse aggregate: respectively putting the modified concrete fine blocks prepared in the step S2, the fine sand and the blast furnace slag into a first dry mixer according to the weight part of (1) (3-4) to (0.3-0.4), and fully stirring to prepare coarse aggregate for later use;
s4, preparation of the cementing material: respectively putting cement, fly ash and waste rubber particles into a second dry mixer according to the weight parts of (1-2) and (0.6-0.8) of 10, and fully stirring to prepare a cementing material for later use;
s5, preparation of concrete: and (3) adding the coarse aggregate prepared in the step (S3), the cementing material prepared in the step (S4), an additive and water into a concrete stirrer according to the weight ratio of 12 (1.5-2.5): (0.02-0.05): 2-3), wherein the stirring speed of the concrete stirrer is 200-400 r/min, and the stirring time is 10-20 min, so as to obtain the finished concrete.
By adopting the technical scheme, the concrete processing technology comprises the specific steps of pretreatment of waste concrete blocks, decomposition treatment of the surfaces of concrete fine blocks, preparation of coarse aggregate and preparation of a cementing material, wherein the waste concrete blocks are recycled and reused, the concrete fine blocks are obtained after crushing and fine crushing treatment, a strong acid salt layer is formed on the surfaces of the concrete fine blocks after surface modification, and the concrete fine blocks are reasonably matched with fine sand and blast furnace slag to form the coarse aggregate; the waste rubber particles are recycled, the brittleness problem of the concrete can be solved by adding rubber into the concrete, the concrete has the advantages of light weight, elastic shock absorption, noise reduction and sound insulation, air permeability, water permeability, good ductility and toughness and the like, and a cementing material is formed by the concrete, the fly ash and the cement according to a reasonable proportion; the concrete processing technology improves the microscopic uniformity of a concrete interface, reduces the agglomeration phenomenon of cement particles by a multi-step stirring technology, improves the dispersibility of the cement particles, improves the hydration degree, improves the distribution state of hydration products of the concrete interface area, and comprehensively improves various performances of the concrete.
The present invention in a preferred example may be further configured to: and (5) loading the finished concrete prepared in the step (S5) into a charging bucket, and keeping the rotation frequency of the charging bucket at 5-10 r/min in the transportation process.
By adopting the technical scheme, the charging bucket keeps the rotating frequency of 5-10 r/min in the transportation process, so that the uniformity of concrete in the charging bucket is kept in the transportation process, and the phenomena of layering and segregation of the concrete are avoided.
The present invention in a preferred example may be further configured to: the particle size of the concrete fine blocks crushed by the crusher is 4-8 mm.
By adopting the technical scheme, the concrete fine blocks with the grain sizes of 4-8 mm are used as coarse aggregates in concrete ingredients, and a large amount of waste concrete is used in the processing technology, so that the usage amount of fine sand or other coarse aggregates is reduced.
The present invention in a preferred example may be further configured to: the mass concentration of the hydrofluoric acid solution is 60-75%, and the mass concentration of the hydrochloric acid solution is 50-70%.
By adopting the technical scheme, the hydrofluoric acid solution and the hydrochloric acid solution are used for modifying the silicate on the surface of the concrete block, so that a strong acid salt layer is formed on the surface of the concrete block, and the hydrophilicity and the caking property between the concrete block and the cementing material are improved.
The present invention in a preferred example may be further configured to: the blast furnace slag is prepared after the crushing treatment of a crusher, and the particle size is 1-2 mm.
By adopting the technical scheme, the blast furnace slag with the particle size of 1-2 mm is used as a cementing material in concrete ingredients, and the blast furnace slag is largely used in the processing technology, so that the using amount of cement is reduced.
The present invention in a preferred example may be further configured to: the particle size of the waste rubber particles is 3-8 mm, the waste rubber particles are subjected to plasma modification treatment, the power is 30-50W, the treatment time is 100-250 s, and the oxygen flow is 15-20 mL/min.
By adopting the technical scheme, the surfaces of the waste rubber particles are subjected to plasma modification treatment, so that the surfaces of the waste rubber particles are subjected to various physical and chemical changes, and compact cross-linked layers are generated on the surfaces of the waste rubber particles or oxygen-containing polar groups are introduced, so that the hydrophilicity, the cohesiveness, the dyeability, the biocompatibility and the electrical property are respectively improved.
The present invention in a preferred example may be further configured to: an electric heating element is clamped in the side wall of the concrete stirrer, a heat insulation layer is arranged on the outer wall of the concrete stirrer, and the electric heating element is used for connecting the electric heating element with an external power supply.
By adopting the technical scheme, the mixture in the concrete stirrer is heated by the electric heating element, and after the mixture with the increased temperature is fully mixed, the microscopic uniformity of a concrete interface is improved, the agglomeration phenomenon of cement particles is reduced, the dispersibility of the cement particles is improved, and the hydration degree of the concrete is improved.
The present invention in a preferred example may be further configured to: the electric heating element is used for heating the mixture in the concrete stirrer to 50-70 ℃.
By adopting the technical scheme, the temperature of the mixture is increased to 50-70 ℃, on one hand, the microscopic uniformity of a concrete interface is improved, and on the other hand, the stirring time of the concrete stirrer is shortened.
The present invention in a preferred example may be further configured to: the additive is selected from one or more of a water reducing agent, an early strength admixture, a retarder, an anti-seepage agent, an air entraining agent or an air entraining agent.
By adopting the technical scheme, the additive is doped into the concrete, so that the workability of the concrete can be improved, the strength, the durability and other various performances of the concrete can be improved, and the performance requirements of the concrete applied to various environments can be met.
The present invention in a preferred example may be further configured to: the water reducing agent is lignosulfonate, a naphthalene sulfonate formaldehyde condensation compound or a water-soluble polymer, and the air entraining agent is wood resin salt, a synthetic detergent or lignosulfonate.
By adopting the technical scheme, the water reducing agent not only improves the strength of concrete, but also greatly improves the rheological property and plasticity of the concrete, so that the concrete construction can be carried out by adopting modes of gravity flow, pumping, no need of vibration and the like, the construction speed is improved, and the construction energy consumption is reduced; the air entraining agent can improve the workability, water retention property and cohesiveness of the concrete, improve the fluidity of the concrete, and introduce a large amount of uniformly distributed, closed and stable micro-bubbles in the mixing process of the concrete.
In summary, the invention includes at least one of the following beneficial technical effects:
the concrete processing technology comprises the concrete steps of pretreatment of waste concrete blocks, decomposition treatment of the surfaces of concrete fine blocks, preparation of coarse aggregate and preparation of a cementing material, wherein the waste concrete blocks are recycled, the concrete fine blocks are obtained after crushing and fine crushing treatment, a strong acid salt layer is formed on the surfaces of the concrete fine blocks after surface modification, and the concrete fine blocks, fine sand and blast furnace slag are reasonably proportioned to form the coarse aggregate; the waste rubber particles are recycled, the brittleness problem of the concrete can be solved by adding rubber into the concrete, the concrete has the advantages of light weight, elastic shock absorption, noise reduction and sound insulation, air permeability, water permeability, good ductility and toughness and the like, and a cementing material is formed by the concrete, the fly ash and the cement according to a reasonable proportion; the concrete processing technology improves the microscopic uniformity of a concrete interface, reduces the agglomeration phenomenon of cement particles by a multi-step stirring technology, improves the dispersibility of the cement particles, improves the hydration degree, improves the distribution state of hydration products of the concrete interface area, and comprehensively improves various performances of the concrete;
according to the invention, the surfaces of the waste rubber particles are subjected to plasma modification treatment, so that various physical and chemical changes occur on the surfaces of the waste rubber particles, and compact cross-linked layers are generated on the surfaces of the waste rubber particles or oxygen-containing polar groups are introduced, so that the hydrophilicity, the cohesiveness, the dyeability, the biocompatibility and the electrical property are respectively improved;
the mixture in the concrete stirrer is heated by the electric heating element, and after the mixture with the increased temperature is fully mixed, the microscopic uniformity of a concrete interface is improved, the agglomeration phenomenon of cement particles is reduced, the dispersibility of the cement particles is improved, and the hydration degree of the concrete is improved.
Drawings
FIG. 1 is a schematic diagram of the process of the present invention.
FIG. 2 is a schematic illustration of the concrete batch formulation of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, the concrete processing technology for doping waste concrete blocks disclosed by the invention comprises the following processing steps:
s1, pretreatment of the waste concrete blocks: washing the recycled waste concrete blocks with water to remove impurities adhered to the surfaces of the waste concrete blocks, feeding the washed waste concrete blocks into a jaw crusher for crushing treatment, separating reinforcing steel bars doped in concrete fragments after crushing treatment, and finally feeding the concrete fragments into a crusher for crushing treatment to obtain concrete fine blocks with the particle size of 4-8 mm;
s2, decomposition treatment of the surface of the concrete piece: putting the prepared concrete nubbles into a material mixing machine, spraying hydrofluoric acid solution and hydrofluoric acid solution into the material mixing machine while the material mixing machine continuously performs material mixing operation, wherein the spraying amount of the hydrofluoric acid solution is 12-15% of the total weight of the concrete nubbles, the spraying amount of the hydrochloric acid solution is 20-25% of the total weight of the concrete nubbles, the mass concentration of the hydrofluoric acid solution is 60-75%, the mass concentration of the hydrochloric acid solution is 50-70%, standing and reacting for 30-40 minutes after spraying is finished to prepare the concrete nubbles with modified surfaces, and strong acid salt layers are formed on the surfaces of the concrete nubbles;
s3, preparation of coarse aggregate: respectively putting the modified concrete fine blocks prepared in the step S2, the fine sand and the blast furnace slag into a first dry mixer according to the weight part of (3-4) and (0.3-0.4), and fully stirring to prepare coarse aggregate for later use, wherein the blast furnace slag is prepared by crushing by a crusher and has the particle size of 1-2 mm;
s4, preparation of the cementing material: respectively putting cement, fly ash and waste rubber particles into a second dry mixer according to the weight parts of (1-2) and (0.6-0.8) of 10, and fully stirring to prepare a cementing material for later use, wherein the particle size of the waste rubber particles is 3-8 mm, the waste rubber particles are subjected to plasma modification treatment, the power is 30-50W, the treatment time is 100-250 s, and the oxygen flow is 15-20 mL/min;
s5, preparation of concrete: adding the coarse aggregate prepared in the step S3, the cementing material prepared in the step S4, an additive and water into a concrete stirrer according to a weight ratio of (1.5-2.5) to (0.02-0.05) to (2-3), wherein an electric heating element is clamped in the side wall of the concrete stirrer, a heat insulation layer is arranged on the outer wall of the concrete stirrer, the electric heating element is connected with an external power supply and is used for heating the mixture in the concrete stirrer to 50-70 ℃, the additive is selected from one or more of a water reducing agent, an early strength agent, an impermeable agent, an air entraining agent and an air entraining agent, the water reducing agent is lignosulfonate, a naphthalenesulfonate formaldehyde condensation compound or a water-soluble polymer, the air entraining agent is wood resin salt, a synthetic detergent or lignosulfonate, the stirring speed of the concrete stirrer is 200-400 r/min, the stirring time is 10-20 min, and (3) preparing finished concrete, and filling the prepared finished concrete into a charging bucket, wherein the rotating frequency of the charging bucket is kept at 5-10 r/min in the transportation process.
The implementation principle of the embodiment is as follows: the concrete processing technology comprises the concrete steps of pretreatment of waste concrete blocks, decomposition treatment of the surfaces of concrete fine blocks, preparation of coarse aggregate and preparation of a cementing material, wherein the waste concrete blocks are recycled and are crushed and finely crushed to obtain the concrete fine blocks, the surfaces of the concrete fine blocks are modified to form a strong acid salt layer, and the strong acid salt layer, the fine sand and blast furnace slag are reasonably proportioned to form the coarse aggregate; the waste rubber particles are recycled, the brittleness problem of the concrete can be solved by adding rubber into the concrete, the concrete has the advantages of light weight, elastic shock absorption, noise reduction and sound insulation, air permeability, water permeability, good ductility and toughness and the like, and the cement and the fly ash form a cementing material according to a reasonable proportion. By carrying out plasma modification treatment on the surface of the waste rubber particles, the surface of the waste rubber particles is subjected to various physical and chemical changes, and a compact cross-linked layer is generated on the surface of the waste rubber particles or oxygen-containing polar groups are introduced, so that the hydrophilicity, the cohesiveness, the dyeability, the biocompatibility and the electrical property are respectively improved.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (10)
1. A concrete processing technology doped with waste concrete blocks is characterized by comprising the following processing steps:
s1, pretreatment of the waste concrete blocks: washing the recycled waste concrete blocks with water to remove impurities adhered to the surfaces of the waste concrete blocks, feeding the washed waste concrete blocks into a jaw crusher for crushing treatment, separating reinforcing steel bars doped in concrete fragments after the crushing treatment, and finally feeding the concrete fragments into a crusher for crushing treatment to obtain concrete fine blocks;
s2, decomposition treatment of the surface of the concrete piece: putting the prepared concrete nubbles into a material mixing machine, spraying hydrofluoric acid solution and hydrofluoric acid solution into the material mixing machine while continuously carrying out material mixing operation by the material mixing machine, wherein the spraying amount of the hydrofluoric acid solution is 12-15% of the total weight of the concrete nubbles, the spraying amount of the hydrochloric acid solution is 20-25% of the total weight of the concrete nubbles, standing and reacting for 30-40 minutes after spraying is finished to prepare the concrete nubbles with modified surfaces, and strong acid salt layers are formed on the surfaces of the concrete nubbles;
s3, preparation of coarse aggregate: respectively putting the modified concrete fine blocks prepared in the step S2, the fine sand and the blast furnace slag into a first dry mixer according to the weight part of (1) (3-4) to (0.3-0.4), and fully stirring to prepare coarse aggregate for later use;
s4, preparation of the cementing material: respectively putting cement, fly ash and waste rubber particles into a second dry mixer according to the weight parts of (1-2) and (0.6-0.8) of 10, and fully stirring to prepare a cementing material for later use;
s5, preparation of concrete: and (3) adding the coarse aggregate prepared in the step (S3), the cementing material prepared in the step (S4), an additive and water into a concrete stirrer according to the weight ratio of 12 (1.5-2.5): (0.02-0.05): 2-3), wherein the stirring speed of the concrete stirrer is 200-400 r/min, and the stirring time is 10-20 min, so as to obtain the finished concrete.
2. The concrete processing process of the doped waste concrete block as claimed in claim 1, wherein: and (5) loading the finished concrete prepared in the step (S5) into a charging bucket, and keeping the rotation frequency of the charging bucket at 5-10 r/min in the transportation process.
3. The concrete processing process of the doped waste concrete block as claimed in claim 1, wherein: the particle size of the concrete fine blocks crushed by the crusher is 4-8 mm.
4. The concrete processing process of the doped waste concrete block as claimed in claim 1, wherein: the mass concentration of the hydrofluoric acid solution is 60-75%, and the mass concentration of the hydrochloric acid solution is 50-70%.
5. The concrete processing process of the doped waste concrete block as claimed in claim 1, wherein: the blast furnace slag is prepared after the crushing treatment of a crusher, and the particle size is 1-2 mm.
6. The concrete processing process of the doped waste concrete block as claimed in claim 1, wherein: the particle size of the waste rubber particles is 3-8 mm, the waste rubber particles are subjected to plasma modification treatment, the power is 30-50W, the treatment time is 100-250 s, and the oxygen flow is 15-20 mL/min.
7. The concrete processing process of the doped waste concrete block as claimed in claim 1, wherein: an electric heating element is clamped in the side wall of the concrete stirrer, a heat insulation layer is arranged on the outer wall of the concrete stirrer, and the electric heating element is connected with an external power supply.
8. The concrete processing process of the doped waste concrete block as claimed in claim 1, wherein: the electric heating element is used for heating the mixture in the concrete stirrer to 50-70 ℃.
9. The concrete processing process of the doped waste concrete block as claimed in claim 1, wherein: the additive is selected from one or more of a water reducing agent, an early strength admixture, a retarder, an anti-seepage agent, an air entraining agent or an air entraining agent.
10. The concrete processing process of the doped waste concrete block as claimed in claim 9, wherein: the water reducing agent is lignosulfonate, a naphthalene sulfonate formaldehyde condensation compound or a water-soluble polymer, and the air entraining agent is wood resin salt, a synthetic detergent or lignosulfonate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911393842.7A CN111087188A (en) | 2019-12-30 | 2019-12-30 | Concrete processing technology doped with waste concrete blocks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911393842.7A CN111087188A (en) | 2019-12-30 | 2019-12-30 | Concrete processing technology doped with waste concrete blocks |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111087188A true CN111087188A (en) | 2020-05-01 |
Family
ID=70398111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911393842.7A Pending CN111087188A (en) | 2019-12-30 | 2019-12-30 | Concrete processing technology doped with waste concrete blocks |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111087188A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114147863A (en) * | 2021-10-21 | 2022-03-08 | 中国铁路设计集团有限公司 | Concrete manufacturing and transferring system |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09142908A (en) * | 1995-11-21 | 1997-06-03 | Hayakawa Rubber Co Ltd | Concrete block having elasticity and its production |
| CN101139193A (en) * | 2007-08-21 | 2008-03-12 | 云南华威废弃物资源化有限公司 | Regenerative concrete composite material and method for making same |
| CN106186945A (en) * | 2016-07-12 | 2016-12-07 | 广东工业大学 | A kind of regeneration concrete and preparation method thereof |
| CN107746228A (en) * | 2017-11-16 | 2018-03-02 | 青岛理工大学 | Recycled concrete doped with rubber particles and preparation method and application thereof |
| CN108640631A (en) * | 2018-05-30 | 2018-10-12 | 安徽筑园景新型建材科技有限公司 | A method of preparing autoclave aerated concrete building block with plasma modification waste rubber powder-fibre reinforced haydite |
| CN108972884A (en) * | 2018-08-11 | 2018-12-11 | 于志婷 | Vertical concrete stirring machine and concrete production line |
| CN110104997A (en) * | 2019-04-26 | 2019-08-09 | 四川衡鼎建材有限公司 | A kind of regeneration concrete and its production technology |
| CN110436837A (en) * | 2019-08-26 | 2019-11-12 | 厦门美益兴业建材有限公司 | A kind of renewable concrete and preparation method thereof |
-
2019
- 2019-12-30 CN CN201911393842.7A patent/CN111087188A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09142908A (en) * | 1995-11-21 | 1997-06-03 | Hayakawa Rubber Co Ltd | Concrete block having elasticity and its production |
| CN101139193A (en) * | 2007-08-21 | 2008-03-12 | 云南华威废弃物资源化有限公司 | Regenerative concrete composite material and method for making same |
| CN106186945A (en) * | 2016-07-12 | 2016-12-07 | 广东工业大学 | A kind of regeneration concrete and preparation method thereof |
| CN107746228A (en) * | 2017-11-16 | 2018-03-02 | 青岛理工大学 | Recycled concrete doped with rubber particles and preparation method and application thereof |
| CN108640631A (en) * | 2018-05-30 | 2018-10-12 | 安徽筑园景新型建材科技有限公司 | A method of preparing autoclave aerated concrete building block with plasma modification waste rubber powder-fibre reinforced haydite |
| CN108972884A (en) * | 2018-08-11 | 2018-12-11 | 于志婷 | Vertical concrete stirring machine and concrete production line |
| CN110104997A (en) * | 2019-04-26 | 2019-08-09 | 四川衡鼎建材有限公司 | A kind of regeneration concrete and its production technology |
| CN110436837A (en) * | 2019-08-26 | 2019-11-12 | 厦门美益兴业建材有限公司 | A kind of renewable concrete and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 阮成祥: "《混凝土外加剂及其工程应用》", 31 December 2008, 江西科学技术出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114147863A (en) * | 2021-10-21 | 2022-03-08 | 中国铁路设计集团有限公司 | Concrete manufacturing and transferring system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Jayanthi et al. | Innovative use of micronized biomass silica-GGBS as agro-industrial by-products for the production of a sustainable high-strength geopolymer concrete | |
| CN109437782A (en) | A kind of manufacture craft of high low-elasticity-modulus assorted fibre seif-citing rate regeneration concrete | |
| CN111268931A (en) | Preparation method of recycled aggregate and dry-mixed mortar | |
| CN101215137A (en) | Ferromanganese ore slag concrete blending material and producing method thereof | |
| CN102674730A (en) | Surface treating agent of recycled aggregate and preparation method thereof | |
| CN110078449B (en) | Baking-free brick prepared from sludge generated by flushing broken stone and machine-made sand and preparation method thereof | |
| CN106045412A (en) | Ecological concrete | |
| CN115215597A (en) | Shield slag slurry alkali-activated regenerated mortar and preparation method and application thereof | |
| CN113387620A (en) | Solidified dredged sludge block based on alkali-activated cementing material and preparation method thereof | |
| CN114656234B (en) | Red mud/coal gangue-based cementing material road base layer formula and preparation process | |
| CN113354310A (en) | Single-component geopolymer curing agent based on multi-component solid wastes and preparation method thereof | |
| CN114195443A (en) | Light recycled concrete and preparation method thereof | |
| CN103965918A (en) | Curing agent for water quenching manganese slag mollisol | |
| CN111377628A (en) | Method for preparing aggregate and concrete by using industrial solid waste | |
| CN112479615B (en) | Geopolymer artificial aggregate based on crushing method and preparation method thereof | |
| CN111087188A (en) | Concrete processing technology doped with waste concrete blocks | |
| CN110922119B (en) | Activation method of stone-washing sand-making waste residue in quarry, cement-based activated waste residue concrete and preparation method of concrete | |
| CN110482925B (en) | High-strength concrete and preparation process thereof | |
| CN108751842B (en) | A kind of high-strength regeneration concrete and preparation method thereof adding waste and old cable | |
| CN115521102A (en) | Full-solid-waste self-compacting concrete and preparation method thereof | |
| CN115304356A (en) | High-strength construction waste recycled brick and preparation method thereof | |
| CN113912315A (en) | Reinforced recycled aggregate and preparation method thereof | |
| CN112299794A (en) | Carbon-glass hybrid fiber modified rubber concrete and preparation method thereof | |
| KR101368681B1 (en) | Geopolymer Composition Using Waste Concrete Powders and Blastfurnace Slag Powders and its a manufacturing method | |
| CN112592085A (en) | Preparation method of novel solidified garbage ash type mineral powder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200501 |
|
| RJ01 | Rejection of invention patent application after publication |