CN111908862A - Renewable environment-friendly pervious concrete and preparation method thereof - Google Patents
Renewable environment-friendly pervious concrete and preparation method thereof Download PDFInfo
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- CN111908862A CN111908862A CN202010673730.3A CN202010673730A CN111908862A CN 111908862 A CN111908862 A CN 111908862A CN 202010673730 A CN202010673730 A CN 202010673730A CN 111908862 A CN111908862 A CN 111908862A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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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- 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
- C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
- C04B18/08—Flue dust, i.e. fly ash
-
- 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
- C04B18/14—Waste materials; Refuse from metallurgical processes
- C04B18/141—Slags
-
- 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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/28—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B24/281—Polyepoxides
-
- 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
-
- 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
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00284—Materials permeable to liquids
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Road Paving Structures (AREA)
Abstract
The invention provides a renewable environment-friendly pervious concrete and a preparation method thereof, wherein the concrete comprises the following components in parts by weight: 300 parts of cement 200-containing material, 250 parts of water 200-containing material, 900 parts of recycled aggregate 750-containing material, 150 parts of fine aggregate 100-containing material, 50-80 parts of admixture, 10-30 parts of additive, 15-25 parts of adhesive and 2-8 parts of water reducing agent; the recycled aggregate is continuous graded waste concrete particles which are 5-30 mm in size and subjected to acidizing treatment; the additive is a mixture of 50% of air entraining agent and 50% of accelerator; the fine aggregate is natural sand with fineness modulus of 2.0 and concentrated preparation in a II area, and the mud content is less than or equal to 0.5 percent; the admixture is class II fly ash and S95 granulated blast furnace slag micro powder, wherein the blending amount of the fly ash accounts for 40-50% of the admixture. The concrete has good workability, easy construction, high setting and hardening speed, good durability and high strength; the problems of low strength, poor water and air permeability, inconvenience in construction and the like of the reproducible concrete and the pervious concrete are solved.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the field of building materials, in particular to a renewable environment-friendly pervious concrete and a preparation method thereof.
[ background of the invention ]
In recent years, the concept of environmental protection and sustainable development has been more and more emphasized, and a plurality of novel concrete technologies have come from this. The reproducible environment-friendly pervious concrete is a novel environment-friendly building material, and has certain strength and good water permeability, air permeability and environmental protection performance.
Along with the continuous acceleration of the urbanization process, the problems of highly concentrated urban population, road congestion, waterlogging, greenhouse effect and the like become more and more prominent. The traditional road surface is generally paved by adopting hard materials such as asphalt concrete, ballast and the like, and has the advantages of high strength, good durability, but poor water permeability and air permeability, but large consumption of natural resources and high cost. The concrete road surface prepared by using the waste concrete blocks, stone ballast and other materials of old roads after a series of treatments can quickly make surface water permeate into the underground and drainage systems, and can enhance ventilation to reduce the surface temperature, thereby improving the problems of urban waterlogging and greenhouse effect and protecting ecological balance.
Compared with natural aggregate, the aggregate adopted by the recycled concrete has weak connecting force between the aggregate and cement paste, large crushing value, low strength and high water absorption rate, so that the prepared concrete has low compressive strength; on the other hand, as a novel concrete, the pervious concrete has been researched abroad, but at home, a large amount of blank still needs to be filled up through more experimental researches, and the mix proportion, the forming process and the like of the pervious concrete are required to be further researched and certified.
[ summary of the invention ]
The invention aims to solve the technical problems of providing the renewable environment-friendly pervious concrete and the preparation method thereof, wherein the concrete has good workability, easy construction, high setting and hardening speed, good durability and high strength; the problems of low strength, poor water and air permeability, inconvenience in construction and the like of the reproducible concrete and the pervious concrete are solved.
The invention is realized by the following steps:
the renewable environment-friendly pervious concrete comprises the following components in parts by weight: 300 parts of cement 200-containing material, 250 parts of water 200-containing material, 900 parts of recycled aggregate 750-containing material, 150 parts of fine aggregate 100-containing material, 50-80 parts of admixture, 10-30 parts of additive, 15-25 parts of adhesive and 2-8 parts of water reducing agent;
the recycled aggregate is continuous graded waste concrete particles which are 5-30 mm in size and subjected to acidizing treatment; the additive is a mixture of 50% of air entraining agent and 50% of accelerator.
Furthermore, P.O 42.5 cement is selected as the cement.
Furthermore, the fine aggregate is natural sand with fineness modulus of 2.0 and concentrated in a zone II, and the mud content is less than or equal to 0.5 percent.
Further, the admixture is II-grade fly ash and S95 granulated blast furnace slag micro powder, wherein the blending amount of the fly ash accounts for 40-50% of the admixture.
Further, the adhesive is bisphenol A epoxy resin adhesive.
Further, the water reducing agent is a polycarboxylic acid high-performance water reducing agent.
Further, the method comprises the following steps:
step 1, treatment of recycled aggregate:
mechanical crushing and screening: crushing waste concrete and stone slag materials generated after the old road is broken by using a stone crusher, then putting the crushed waste concrete and stone slag materials into a vibrating screen, and removing impurities with small particle size such as old mortar and the like to obtain preliminarily screened aggregate particles;
acid leaching, cleaning and air drying: putting the primarily screened aggregate particles into an oxalic acid solution for soaking, reacting acid with calcium hydroxide in the aggregate to generate calcium salt precipitate which is insoluble in water, removing the residual solution and the precipitate, and cleaning and air-drying the aggregate particles to obtain final recycled aggregate;
step 2, mixing the components: putting the recycled aggregate and the fine aggregate into a forced mixer, uniformly stirring, adding cement and an admixture, adding 30% of water while stirring, continuously adding a mixture of a water reducing agent and the rest water, uniformly stirring, finally adding an additive and an adhesive, and continuously stirring until the fluidity meets the requirement to prepare the fresh concrete with the slump of about 100 mm.
The invention has the following advantages:
1. according to the renewable environment-friendly pervious concrete prepared by the invention, pores in the concrete are refined by a micro-aggregate effect of the coal ash and the mineral powder which are mixed, so that the concrete has high compressive strength and good carbonization resistance, and the concrete also has good construction performance.
2. The renewable environment-friendly pervious concrete prepared by the invention reduces the water absorption of the aggregate, strengthens the connection strength of the concrete interface transition area and reduces the concrete alkali-aggregate reaction by acidizing the recycled aggregate, so that the prepared concrete structure is stable and has strong water permeability.
3. By adopting the epoxy resin as the adhesive material, the activity of the surface of the recycled aggregate can be improved, the bonding area between the aggregates is increased, the bonding force between the aggregates and cement paste is enhanced, the durability and the service life of the concrete are improved, and the concrete has more reliable bearing capacity.
4. The renewable environment-friendly pervious concrete prepared by the invention uses the air entraining agent and the accelerating agent as additives, and then adds the polycarboxylic acid high-performance water reducing agent, so that the workability, the water retention property and the cohesiveness of a concrete mixture can be improved, the fluidity of the concrete is improved, a large number of uniformly distributed, closed and stable micro-bubbles are introduced in the concrete mixing process, the frost resistance and the corrosion resistance of a concrete pavement are improved, and the pavement construction period can be greatly shortened.
[ detailed description ] embodiments
The invention relates to a renewable environment-friendly pervious concrete and a preparation method thereof, wherein the concrete comprises the following components in parts by weight: 300 parts of cement 200-containing material, 250 parts of water 200-containing material, 900 parts of recycled aggregate 750-containing material, 150 parts of fine aggregate 100-containing material, 50-80 parts of admixture, 10-30 parts of additive, 15-25 parts of adhesive and 2-8 parts of water reducing agent;
the recycled aggregate is continuous graded waste concrete particles which are 5-30 mm in size and subjected to acidizing treatment; the additive is a mixture of 50% of air entraining agent and 50% of accelerator.
The cement is P.O 42.5 cement.
The fine aggregate is natural sand with fineness modulus of 2.0 and concentrated preparation in a zone II, and the mud content is less than or equal to 0.5 percent.
The admixture is class II fly ash and S95 granulated blast furnace slag micro powder, wherein the blending amount of the fly ash accounts for 40-50% of the admixture.
The adhesive is bisphenol A epoxy resin adhesive.
The water reducing agent is a polycarboxylic acid high-performance water reducing agent.
The preparation method of the renewable environment-friendly pervious concrete comprises the following steps:
step 1, treatment of recycled aggregate:
mechanical crushing and screening: crushing waste concrete and stone slag materials generated after the old road is broken by using a stone crusher, then putting the crushed waste concrete and stone slag materials into a vibrating screen, and removing impurities with small particle size such as old mortar and the like to obtain preliminarily screened aggregate particles;
acid leaching, cleaning and air drying: putting the primarily screened aggregate particles into an oxalic acid solution for soaking, reacting acid with calcium hydroxide in the aggregate to generate calcium salt precipitate which is insoluble in water, removing the residual solution and the precipitate, and cleaning and air-drying the aggregate particles to obtain final recycled aggregate;
step 2, mixing the components: putting the recycled aggregate and the fine aggregate into a forced mixer, uniformly stirring, adding cement and an admixture, adding 30% of water while stirring, continuously adding a mixture of a water reducing agent and the rest water, uniformly stirring, finally adding an additive and an adhesive, and continuously stirring until the fluidity meets the requirement to prepare the fresh concrete with the slump of about 100 mm.
The present invention will be further described with reference to the following examples.
Table 1 concrete mixing proportion units (parts) of examples and comparative examples
Table 2, concrete test results of examples and comparative examples
According to the analysis of the test results of the examples and the comparative examples in the tables 1 and 2, the concrete prepared by the method has considerable performance under the condition of reasonable mixing proportion. The compressive strength of the concrete can reach the traditional C40-C50 concrete standard, and the indexes of the concrete such as the bending strength, the freezing resistance and the like can meet the use requirements of pavement concrete.
Although specific embodiments of the invention have been described above, it will be understood by those skilled in the art that the specific embodiments described are illustrative only and are not limiting upon the scope of the invention, and that equivalent modifications and variations can be made by those skilled in the art without departing from the spirit of the invention, which is to be limited only by the appended claims.
Claims (7)
1. The reproducible environment-friendly pervious concrete is characterized in that: the composition comprises the following components in parts by weight: 300 parts of cement 200-containing material, 250 parts of water 200-containing material, 900 parts of recycled aggregate 750-containing material, 150 parts of fine aggregate 100-containing material, 50-80 parts of admixture, 10-30 parts of additive, 15-25 parts of adhesive and 2-8 parts of water reducing agent;
the recycled aggregate is continuous graded waste concrete particles which are 5-30 mm in size and subjected to acidizing treatment; the additive is a mixture of 50% of air entraining agent and 50% of accelerator.
2. The reproducible environment-friendly pervious concrete according to claim 1, characterized in that: the cement is P.O 42.5 cement.
3. The reproducible environment-friendly pervious concrete according to claim 1, characterized in that: the fine aggregate is natural sand with fineness modulus of 2.0 and concentrated preparation in a zone II, and the mud content is less than or equal to 0.5 percent.
4. The reproducible environment-friendly pervious concrete according to claim 1, characterized in that: the admixture is class II fly ash and S95 granulated blast furnace slag micro powder, wherein the blending amount of the fly ash accounts for 40-50% of the admixture.
5. The reproducible environment-friendly pervious concrete according to claim 1, characterized in that: the adhesive is bisphenol A epoxy resin adhesive.
6. The reproducible environment-friendly pervious concrete according to claim 1, characterized in that: the water reducing agent is a polycarboxylic acid high-performance water reducing agent.
7. The preparation method of the renewable environment-friendly pervious concrete according to any one of claims 1 to 6, characterized in that: the method comprises the following steps:
step 1, treatment of recycled aggregate:
mechanical crushing and screening: crushing waste concrete and stone slag materials generated after the old road is broken by using a stone crusher, then putting the crushed waste concrete and stone slag materials into a vibrating screen, and removing impurities with small particle size such as old mortar and the like to obtain preliminarily screened aggregate particles;
acid leaching, cleaning and air drying: putting the primarily screened aggregate particles into an oxalic acid solution for soaking, reacting acid with calcium hydroxide in the aggregate to generate calcium salt precipitate which is insoluble in water, removing the residual solution and the precipitate, and cleaning and air-drying the aggregate particles to obtain final recycled aggregate;
step 2, mixing the components: putting the recycled aggregate and the fine aggregate into a forced mixer, uniformly stirring, adding cement and an admixture, adding 30% of water while stirring, continuously adding a mixture of a water reducing agent and the rest water, uniformly stirring, finally adding an additive and an adhesive, and continuously stirring until the fluidity meets the requirement to prepare the fresh concrete.
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| CN202010673730.3A CN111908862A (en) | 2020-07-14 | 2020-07-14 | Renewable environment-friendly pervious concrete and preparation method thereof |
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| CN202010673730.3A CN111908862A (en) | 2020-07-14 | 2020-07-14 | Renewable environment-friendly pervious concrete and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113402206A (en) * | 2021-05-22 | 2021-09-17 | 佛山市南海科明达混凝土有限公司 | Pervious concrete prepared from reclaimed materials and preparation method thereof |
| CN113955989A (en) * | 2021-10-19 | 2022-01-21 | 福建省兴岩建筑科技有限公司 | Preparation process of renewable lightweight concrete |
| CN114014608A (en) * | 2021-11-11 | 2022-02-08 | 云南中建西部建设有限公司 | Preparation method and construction method of pervious concrete capable of being transported and constructed in ultra-long distance |
| CN114751696A (en) * | 2022-04-19 | 2022-07-15 | 玺大建设工程有限公司 | Recycled aggregate energy-storage light-emitting water-permeable brick and preparation method thereof |
| CN115925356A (en) * | 2022-11-25 | 2023-04-07 | 华能陇东能源有限责任公司正宁电厂 | Coking wastewater-doped strong brine rapid water seepage concrete and preparation method thereof |
| CN118084378A (en) * | 2024-02-27 | 2024-05-28 | 扬州大学 | Oxalic acid complexing agent and application thereof |
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2020
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| CN106116327A (en) * | 2016-06-20 | 2016-11-16 | 山东大元实业股份有限公司 | A kind of pervious concrete utilizing solid-state castoff to produce and preparation method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113402206A (en) * | 2021-05-22 | 2021-09-17 | 佛山市南海科明达混凝土有限公司 | Pervious concrete prepared from reclaimed materials and preparation method thereof |
| CN113402206B (en) * | 2021-05-22 | 2022-03-11 | 佛山市南海科明达混凝土有限公司 | Pervious concrete prepared from reclaimed materials and preparation method thereof |
| CN113955989A (en) * | 2021-10-19 | 2022-01-21 | 福建省兴岩建筑科技有限公司 | Preparation process of renewable lightweight concrete |
| CN114014608A (en) * | 2021-11-11 | 2022-02-08 | 云南中建西部建设有限公司 | Preparation method and construction method of pervious concrete capable of being transported and constructed in ultra-long distance |
| CN114751696A (en) * | 2022-04-19 | 2022-07-15 | 玺大建设工程有限公司 | Recycled aggregate energy-storage light-emitting water-permeable brick and preparation method thereof |
| CN114751696B (en) * | 2022-04-19 | 2023-08-22 | 玺大建设工程有限公司 | Recycled aggregate energy storage luminous water permeable brick and preparation method thereof |
| CN115925356A (en) * | 2022-11-25 | 2023-04-07 | 华能陇东能源有限责任公司正宁电厂 | Coking wastewater-doped strong brine rapid water seepage concrete and preparation method thereof |
| CN118084378A (en) * | 2024-02-27 | 2024-05-28 | 扬州大学 | Oxalic acid complexing agent and application thereof |
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