CN113979693B - Permeable pavement material capable of degrading automobile exhaust and prepared based on urban construction waste and preparation method thereof - Google Patents
Permeable pavement material capable of degrading automobile exhaust and prepared based on urban construction waste and preparation method thereof Download PDFInfo
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
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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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/30—Oxides other than silica
- C04B14/305—Titanium oxide, e.g. titanates
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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
- C04B16/00—Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/023—Chemical treatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
- B01D2257/302—Sulfur oxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/40—Nitrogen compounds
- B01D2257/404—Nitrogen oxides other than dinitrogen oxide
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/50—Carbon oxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/01—Engine exhaust gases
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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
- 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
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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
- 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
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
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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
- 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
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- 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
Abstract
The invention discloses a permeable pavement material capable of degrading automobile exhaust, which is prepared based on urban building garbage and comprises the following components in parts by weight: 200-300 parts of cement, 500-600 parts of construction waste recycled aggregate, 2-3 parts of basalt fiber, 5-10 parts of modified filler, 80-150 parts of slag powder, 1-2 parts of water reducing agent, 0.5-1 part of retarder and 50-70 parts of water; the modified filler is a tartaric acid/chitosan modified nano titanium oxide/Zr-MOF composite material. The invention also discloses a preparation method of the permeable pavement material. The permeable pavement material prepared by the method disclosed by the invention is good in mechanical property, has good water permeability and has a certain degradation effect on automobile exhaust.
Description
Technical Field
The invention relates to the field of building materials, in particular to a permeable pavement material capable of degrading automobile exhaust and a preparation method thereof based on urban building garbage.
Background
With the continuous increase of automobile ownership in China, various pollutants such as sulfur dioxide, carbon oxides, nitrogen oxides and the like in automobile exhaust become one of the main factors for reducing air quality in China. People take various measures against the harm caused by the tail gas of the automobile, such as encouraging public transport, adjusting an automobile power device, improving the quality of fuel oil, purifying the tail gas outside an engine and the like. With the development of building materials, the green and environment-friendly pavement material is also applied to degrading automobile exhaust. In recent years, a series of researches on the degradation of automobile exhaust by using the pavement material loaded with titanium oxide are carried out by many domestic scholars. The application of the technology for degrading the automobile exhaust by TiO2 photocatalysis in roads has positive effects of reducing the automobile exhaust pollution, improving the air quality and protecting the environment.
The patent with the application number of CN201810969986.1 provides a method for catalytically degrading automobile exhaust based on an asphalt mastic macadam pavement, lanthanum and copper ions are used as doping agents to modify TiO2, a lignin stabilizer is used as an adsorbent, a sol-gel method is utilized to prepare the lignin stabilizer loading lanthanum-copper codoped modified TiO2, and the lignin stabilizer is doped into an SMA mixture; then, evaluating the road performance and the catalytic degradation effect on the main components of the tail gas; comprehensively comparing the road performance of the SMA mixture with the catalytic degradation test result, adjusting the concentrations of lanthanum nitrate and copper sulfate solution, and determining the optimal doping amount of lanthanum and copper of TiO2 loaded on the lignin stabilizer through repeated tests, wherein the optimal doping amount is used for paving the SMA road surface with the function of catalytically degrading the automobile exhaust. According to the prior art, the tail gas degradation material is added into the pavement material, so that the air quality can be effectively improved, and the automobile tail gas pollution is reduced.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: aiming at the defects in the prior art, the invention provides the permeable pavement material capable of degrading the automobile exhaust based on the urban building waste and the preparation method thereof.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a permeable pavement material capable of degrading automobile exhaust prepared based on urban construction waste comprises the following components in parts by weight:
200-300 parts of cement, 500-600 parts of construction waste recycled aggregate, 2-3 parts of basalt fiber, 5-10 parts of modified filler, 80-150 parts of slag powder, 1-2 parts of water reducing agent, 0.5-1 part of retarder and 50-70 parts of water; the modified filler is a tartaric acid/chitosan modified nano titanium oxide/Zr-MOF composite material.
Preferably, in the technical scheme, the cement is portland cement with the strength grade of 42.5R, the construction waste recycled aggregate concrete recycled aggregate has the average particle size of 1-2mm, the basalt fiber has the diameter of 2-3 μm and the average length of 20-30 μm, and the slag powder is S75 grade slag powder, S95 grade slag powder or S105 grade slag powder.
Preferably, the water reducing agent is a polycarboxylate water reducing agent, and the retarder is a protein retarder.
Preferably, the preparation method of the modified filler comprises the following steps:
(1) Uniformly mixing zirconium oxychloride octahydrate, trimesic acid and DMF (dimethyl formamide), adding nano titanium oxide, continuously stirring and mixing, placing the mixed solution into a reaction kettle for reaction, cooling to room temperature after the reaction is finished, filtering the reaction solution in the reaction kettle, and drying to obtain a nano titanium oxide/Zr-MOF composite material;
(2) And (3) dissolving chitosan in a tartaric acid solution, adding the prepared nano titanium oxide/Zr-MOF composite material, carrying out ultrasonic treatment, filtering, and drying the solid to obtain the modified filler.
Preferably, in the step (1), the mass ratio of the zirconium oxychloride octahydrate to the trimesic acid is 1.5: (0.8-1.1).
Preferably, in the step (1), the nano titanium oxide is anatase nano titanium oxide, and the average particle size of the nano titanium oxide is 20-30nm; the mass ratio of the nano titanium oxide to the zirconium oxychloride octahydrate is 1: (0.7-0.9).
Preferably, in the step (1), the reaction temperature is 110-130 ℃, and the reaction time is 20-30h.
Preferably, in the step (2), the tartaric acid solution has a mass concentration of 9%, and the chitosan, tartaric acid and nano titanium oxide/Zr-MOF composite material has a mass ratio of (0.002-0.003): 0.02:1.
Preferably, in the step (2), the power of the ultrasonic treatment is 1000W, and the time of the ultrasonic treatment is 30-40min.
In order to better understand the invention, the invention also provides a preparation method of the permeable pavement material capable of degrading the automobile exhaust based on the urban building garbage, which comprises the following steps:
mixing and stirring the building waste recycled aggregate, the basalt fiber, the modified filler and the slag powder uniformly, then adding cement, continuing stirring, adding water, stirring and mixing, finally sequentially adding the water reducing agent and the retarder, placing the mixture in a mold after uniformly mixing, vibrating to remove bubbles, flattening, and naturally curing to demolding to obtain the permeable pavement material.
Due to the adoption of the technical scheme, the invention has the beneficial effects that:
the tartaric acid/chitosan modified nano titanium oxide/Zr-MOF composite material is added into the water permeable pavement material provided by the invention, and the Zr-MOF material has a multi-dimensional network structure, high porosity, large specific surface area and more active sites, and can effectively adsorb tail gas; the nano titanium oxide has certain photocatalysis performance, and can effectively degrade automobile exhaust to achieve the aim of purification. According to the invention, the nano titanium oxide is added in the process of preparing the Zr-MOF material, so that the nano titanium oxide/Zr-MOF composite material is prepared, has good dispersibility, and can effectively adsorb tail gas and effectively degrade the tail gas. In order to further improve the performance of the material, the chitosan and tartaric acid are adopted for modification, a large number of amino groups and hydroxyl groups are arranged in chitosan molecules, the mechanical property of the cement-based material can be enhanced, and the tartaric acid contains a large number of carboxyl groups and can be bonded with the amino groups in the chitosan molecules to form a stable double chelating network, so that the tartaric acid is well grafted on the surface of the nano titanium oxide/Zr-MOF composite material, more active sites are provided, and the mechanical property of the material is improved. The permeable pavement material prepared by the method disclosed by the invention is good in mechanical property, has good water permeability and has a certain degradation effect on automobile exhaust.
Detailed Description
The invention is further illustrated by the following examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention.
Example 1
(1) Mixing and stirring uniformly 15g of zirconium oxychloride octahydrate, 8g of trimesic acid and 100ml of DMF (dimethyl formamide), adding 18g of nano titanium oxide, continuously stirring and mixing, then placing the mixed solution in a reaction kettle for reaction at 120 ℃ for 20 hours, cooling to room temperature after the reaction is finished, filtering the reaction solution in the reaction kettle, and drying to obtain a nano titanium oxide/Zr-MOF composite material;
(2) Dissolving 0.02g of chitosan in 2.22g of tartaric acid solution with the mass concentration of 9%, then adding 10g of the prepared nano titanium oxide/Zr-MOF composite material, carrying out ultrasonic treatment for 30min at 1000W, then filtering, and drying the solid to prepare the modified filler;
(3) According to parts by weight, 500 parts of construction waste recycled aggregate, 2 parts of basalt fiber, 5 parts of modified filler and 80 parts of slag powder are mixed and stirred uniformly, then 200 parts of portland cement is added, stirring is continued, 50 parts of water is added for stirring and mixing, finally 1 part of polycarboxylate water reducer and 0.5 part of protein retarder are sequentially added, the materials are placed in a mold after being mixed uniformly, air bubbles are removed through oscillation, flattening is carried out, and the materials are naturally maintained until demolding is carried out, so that the permeable pavement material is prepared.
Example 2
(1) Mixing and stirring uniformly 15g of zirconium oxychloride octahydrate, 11g of trimesic acid and 100ml of DMF (dimethyl formamide), adding 18g of nano titanium oxide, continuously stirring and mixing, then placing the mixed solution in a reaction kettle for reaction at 120 ℃ for 30 hours, cooling to room temperature after the reaction is finished, filtering and drying the reaction solution in the reaction kettle, and preparing the nano titanium oxide/Zr-MOF composite material;
(2) Dissolving 0.03g of chitosan into 2.22g of tartaric acid solution with the mass concentration of 9%, then adding 10g of the prepared nano titanium oxide/Zr-MOF composite material, carrying out ultrasonic treatment for 40min at 1000W, then filtering, and drying the solid to prepare the modified filler;
(3) The method comprises the following steps of mixing and stirring 600 parts by weight of building waste recycled aggregate, 3 parts by weight of basalt fiber, 10 parts by weight of modified filler and 150 parts by weight of slag powder uniformly, adding 300 parts by weight of portland cement, continuing stirring, adding 70 parts by weight of water, stirring and mixing, finally adding 2 parts by weight of polycarboxylate water reducing agent and 1 part by weight of protein retarder in sequence, placing the mixture in a mold after uniformly mixing, vibrating to remove bubbles, flattening, and naturally curing to demolding to obtain the permeable pavement material.
Example 3
(1) Mixing and stirring uniformly 15g of zirconium oxychloride octahydrate, 9g of trimesic acid and 100ml of DMF (dimethyl formamide), adding 18g of nano titanium oxide, continuously stirring and mixing, then placing the mixed solution in a reaction kettle for reaction at 120 ℃ for 22 hours, cooling to room temperature after the reaction is finished, filtering the reaction solution in the reaction kettle, and drying to obtain a nano titanium oxide/Zr-MOF composite material;
(2) Dissolving 0.025g of chitosan in 2.22g of tartaric acid solution with the mass concentration of 9%, then adding 10g of the prepared nano titanium oxide/Zr-MOF composite material, carrying out ultrasonic treatment at 1000W for 35min, then filtering, and drying the solid to prepare the modified filler;
(3) The method comprises the following steps of mixing and stirring 550 parts by weight of building waste recycled aggregate, 2.5 parts by weight of basalt fiber, 6 parts by weight of modified filler and 90 parts by weight of slag powder uniformly, adding 220 parts by weight of portland cement, continuing stirring, adding 55 parts by weight of water, stirring and mixing, finally sequentially adding 1.5 parts by weight of polycarboxylate water reducing agent and 0.6 part by weight of protein retarder, uniformly mixing, placing in a mold, vibrating to remove bubbles, flattening, and naturally curing to demolding to obtain the permeable pavement material.
Example 4
(1) Mixing and stirring uniformly 15g of zirconium oxychloride octahydrate, 10g of trimesic acid and 100ml of DMF (dimethyl formamide), adding 18g of nano titanium oxide, continuously stirring and mixing, then placing the mixed solution in a reaction kettle for reaction at 120 ℃ for 25 hours, cooling to room temperature after the reaction is finished, filtering the reaction solution in the reaction kettle, and drying to obtain a nano titanium oxide/Zr-MOF composite material;
(2) Dissolving 0.03g of chitosan in 2.22g of tartaric acid solution with the mass concentration of 9%, then adding 10g of the prepared nano titanium oxide/Zr-MOF composite material, carrying out ultrasonic treatment for 40min at 1000W, then filtering, and drying the solid to prepare the modified filler;
(3) 570 parts of construction waste recycled aggregate, 2 parts of basalt fiber, 7 parts of modified filler and 100 parts of slag powder are mixed and stirred uniformly by weight, then 250 parts of portland cement is added, the stirring is continued, 60 parts of water is added for stirring and mixing, finally, 1 part of polycarboxylate water reducing agent and 0.7 part of protein retarder are sequentially added, the materials are placed in a mold after being mixed uniformly, the materials are vibrated to remove bubbles, flattened and naturally maintained until the materials are demolded, and the permeable pavement material is prepared.
Example 5
(1) Mixing and stirring uniformly 15g of zirconium oxychloride octahydrate, 11g of trimesic acid and 100ml of DMF (dimethyl formamide), adding 18g of nano titanium oxide, continuously stirring and mixing, then placing the mixed solution in a reaction kettle for reaction at 120 ℃ for 20 hours, cooling to room temperature after the reaction is finished, filtering the reaction solution in the reaction kettle, and drying to obtain a nano titanium oxide/Zr-MOF composite material;
(2) Dissolving 0.03g of chitosan in 2.22g of tartaric acid solution with the mass concentration of 9%, then adding 10g of the prepared nano titanium oxide/Zr-MOF composite material, carrying out ultrasonic treatment for 40min at 1000W, then filtering, and drying the solid to prepare the modified filler;
(3) According to parts by weight, 500 parts of construction waste recycled aggregate, 3 parts of basalt fiber, 10 parts of modified filler and 100 parts of slag powder are mixed and stirred uniformly, then 300 parts of portland cement is added, stirring is continued, 50 parts of water is added for stirring and mixing, finally 2 parts of polycarboxylate water reducing agent and 1 part of protein retarder are sequentially added, after uniform mixing, the mixture is placed in a mold, air bubbles are removed through oscillation, the mixture is flattened, and the permeable pavement material is prepared through natural curing and demolding.
Comparative example
(1) Mixing and stirring uniformly 15g of zirconium oxychloride octahydrate, 11g of trimesic acid and 100ml of DMF (dimethyl formamide), adding 18g of nano titanium oxide, continuously stirring and mixing, then placing the mixed solution in a reaction kettle for reaction at 120 ℃ for 20 hours, cooling to room temperature after the reaction is finished, filtering the reaction solution in the reaction kettle, and drying to obtain a nano titanium oxide/Zr-MOF composite material;
(2) According to parts by weight, 500 parts of construction waste recycled aggregate, 3 parts of basalt fiber, 10 parts of nano titanium oxide/Zr-MOF composite material and 100 parts of slag powder are mixed and stirred uniformly, then 300 parts of portland cement are added, stirring is continued, 50 parts of water is added for stirring and mixing, finally 2 parts of polycarboxylate water reducer and 1 part of protein retarder are sequentially added, the mixture is placed in a mold after being uniformly mixed, air bubbles are removed through oscillation, the mixture is flattened, and the mixture is naturally cured until demolding is carried out, so that the permeable pavement material is prepared.
The performance test was performed on the permeable pavement materials of the above examples and comparative examples, and the results are shown in table 1.
TABLE 1
From the test results, the pavement material prepared by the invention not only has good water permeability, but also can effectively degrade automobile exhaust. In addition, the mechanical property of the permeable pavement material is better improved by adding the chitosan/tartaric acid composite modified nano titanium oxide/Zr-MOF composite material.
Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
Claims (5)
1. The permeable pavement material capable of degrading the automobile exhaust based on the urban construction waste is characterized by comprising the following components in parts by weight:
200-300 parts of cement, 500-600 parts of construction waste recycled aggregate, 2-3 parts of basalt fiber, 5-10 parts of modified filler, 80-150 parts of slag powder, 1-2 parts of water reducing agent, 0.5-1 part of retarder and 50-70 parts of water; the modified filler is a tartaric acid/chitosan modified nano titanium oxide/Zr-MOF composite material;
the preparation method of the modified filler comprises the following steps:
(1) Uniformly mixing zirconium oxychloride octahydrate, trimesic acid and DMF (dimethyl formamide), adding anatase type nano titanium oxide with the average particle size of 20-30nm, continuously stirring and mixing, then placing the mixed solution in a reaction kettle, reacting at 110-130 ℃ for 20-30h, cooling to room temperature after the reaction is finished, filtering the reaction solution in the reaction kettle, and drying to obtain the nano titanium oxide/Zr-MOF composite material; wherein the mass ratio of the zirconium oxychloride octahydrate to the trimesic acid is 1.5: (0.8-1.1); the mass ratio of the nano titanium oxide to the zirconium oxychloride octahydrate is 1: (0.7-0.9);
(2) Dissolving chitosan in tartaric acid solution with the mass concentration of 9%, then adding the prepared nano titanium oxide/Zr-MOF composite material, carrying out ultrasonic treatment, then filtering, and drying the solid to prepare a modified filler; wherein the mass ratio of the chitosan to the tartaric acid to the nano titanium oxide/Zr-MOF composite material is (0.002-0.003): 0.02:1.
2. The permeable pavement material capable of degrading automobile exhaust prepared based on urban construction waste, according to claim 1, is characterized in that the cement is portland cement with a strength grade of 42.5R, the construction waste recycled aggregate concrete recycled aggregate has an average particle size of 1-2mm, the basalt fiber has a diameter of 2-3 μm and an average length of 20-30 μm, and the slag powder is slag powder grade S75, slag powder grade S95 or slag powder grade S105.
3. The permeable pavement material capable of degrading automobile exhaust prepared based on urban building garbage according to claim 1 is characterized in that the water reducing agent is a polycarboxylate water reducing agent, and the retarder is a protein retarder.
4. The permeable pavement material capable of degrading automobile exhaust prepared based on municipal building waste according to claim 1, characterized in that in step (2), the power of ultrasonic treatment is 1000W, and the time of ultrasonic treatment is 30-40min.
5. The method for preparing the permeable pavement material capable of degrading the automobile exhaust based on the municipal building waste according to any one of claims 1 to 4, which is characterized by comprising the following steps:
mixing and stirring the building waste recycled aggregate, the basalt fiber, the modified filler and the slag powder uniformly, then adding cement, continuing stirring, adding water, stirring and mixing, finally sequentially adding the water reducing agent and the retarder, mixing uniformly, placing in a mold, vibrating to remove bubbles, flattening, and naturally curing to demolding to obtain the permeable pavement material.
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|---|---|---|---|---|
| JP2000355913A (en) * | 1999-06-17 | 2000-12-26 | Hazama Gumi Ltd | Construction method for sound absorbing wall |
| DE10212591B4 (en) * | 2002-03-15 | 2007-03-29 | Wilhelm Dipl.-Ing. Kämereit | Titanium dioxide-containing coating or admixture for contact surfaces in the waste gas and wastewater treatment |
| CN101912737B (en) * | 2010-08-26 | 2012-12-19 | 南京工业大学 | Method for preparing metal organic frame supported film |
| CN104513592A (en) * | 2015-01-07 | 2015-04-15 | 山西省交通科学研究院 | Pavement paint for purifying automobile exhaust and preparation method for pavement paint |
| CN107476165B (en) * | 2017-07-25 | 2020-05-22 | 北京艾宝科技有限责任公司 | Water seepage pavement with air purification function and preparation method thereof |
| CN108666544B (en) * | 2018-04-18 | 2020-11-06 | 燕山大学 | Preparation of carbon-coated CoTiO by MOF derivatization3Synthesis method of nano microcrystalline material |
| CN111187418B (en) * | 2018-11-15 | 2021-07-27 | 中国科学院大连化学物理研究所 | Zirconium-based organic framework compound and preparation method and application thereof |
| CN110510949B (en) * | 2019-09-03 | 2022-03-04 | 亚泰集团长春建材有限公司 | Recycled aggregate pervious concrete and preparation method and application thereof |
| CN111978102B (en) * | 2020-08-17 | 2022-02-18 | 绍兴职业技术学院 | Sponge urban energy-saving thixotropic medium degradable mortar |
| CN113399003B (en) * | 2021-06-04 | 2022-07-12 | 中国科学院上海硅酸盐研究所 | Precious metal nanoparticle-MOFs gel block composite material and preparation method and application thereof |
| CN113457644A (en) * | 2021-07-09 | 2021-10-01 | 武汉工程大学 | Preparation method of surface modified metal organic framework structure adsorption material |
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