CN110777606A - Preparation method of sand-containing fog seal pavement material with function of degrading automobile exhaust - Google Patents
Preparation method of sand-containing fog seal pavement material with function of degrading automobile exhaust Download PDFInfo
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- CN110777606A CN110777606A CN201911098265.9A CN201911098265A CN110777606A CN 110777606 A CN110777606 A CN 110777606A CN 201911098265 A CN201911098265 A CN 201911098265A CN 110777606 A CN110777606 A CN 110777606A
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- activated carbon
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- coupling agent
- silane coupling
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
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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
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/26—Bituminous materials, e.g. tar, pitch
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
- E01C19/10—Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resins, i.e. producing mixtures or coating aggregates otherwise than by penetrating or surface dressing; Apparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
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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
- C04B2111/00008—Obtaining or using nanotechnology related materials
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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
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Ceramic Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Biomedical Technology (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Catalysts (AREA)
- Road Paving Structures (AREA)
Abstract
The invention relates to a preparation method of a sand-containing fog seal pavement material with the function of degrading automobile exhaust, which comprises the following steps: (1) washing the activated carbon with distilled water, drying and cooling for later use; (2) mixing a silane coupling agent into alcohol, and adding the silane coupling agent while stirring the mixed solution to enable the silane coupling agent to fully react with the alcohol; (3) then putting the weighed mass of nano titanium dioxide into the mixed solution of the silane coupling agent and the alcohol, and stirring by using a high-speed shearing machine to fully react; (4) putting the activated carbon treated in the step (1) into water, and stirring the activated carbon uniformly by using a high-speed stirrer; (5) and (4) mixing the mixed liquor obtained in the step (3) and the mixed liquor obtained in the step (4) according to a ratio, putting the mixed liquor into an ultrasonic stirrer, starting the ultrasonic stirrer to perform ultrasonic mixing for more than 1 hour, and finishing the mixing to form mixed material slurry. The method has the advantages of simple process, low cost and high efficiency of photocatalytic degradation of the automobile exhaust.
Description
Technical Field
The invention belongs to the technical field of novel pavement construction, and particularly relates to a preparation method of a sand-containing fog seal pavement material for photocatalytic degradation of automobile exhaust.
Background
With the development of the modern times, pollutants discharged by automobiles have certain influence on the air quality, and the automobile exhaust pollutants mainly comprise: carbon monoxide, hydrocarbons, nitrogen oxides, sulfur dioxide, soot particles (certain heavy metal compounds, lead compounds, black smoke and oil mist), odors (formaldehyde, etc.). The most significant hazard of automobile exhaust is the formation of photochemical smog. Hydrocarbons and nitrogen oxides in automobile exhaust undergo chemical reaction under the action of sunlight to generate ozone, which is combined with other components in the atmosphere to form photochemical smog. Its harm to health is mainly manifested by eye irritation, causing pinkeye; irritate nose, throat, trachea and lungs, causing chronic respiratory diseases. Photochemical smog can wither trees and reduce the yield of crops in large quantities; can reduce the visibility of the atmosphere and obstruct the traffic.
Under the background, a plurality of novel pavements or novel materials are promoted to meet the requirement of degrading automobile exhaust so as to protect the environment. For example, the method disclosed in patent CN108708245A uses titanium dioxide to add into asphalt mixture, and the pavement finished by the method can play a role in catalyzing and degrading automobile exhaust, but the adsorption capacity of the pavement is limited, and the titanium dioxide is too wasteful and expensive to be directly mixed into the mixture. Further, as disclosed in chinese patent application No. 201510589065.9, titanium dioxide and activated carbon are prepared by a sol-gel method, but the material cannot fully exert the maximum photocatalytic performance, and cannot avoid the disadvantages of long preparation process, need of titanium dioxide sol, and the like, and the price of the material is not very suitable for paving road surfaces.
Disclosure of Invention
The invention aims to provide a preparation method of a sand-containing fog seal pavement material capable of degrading automobile exhaust, which has the advantages of easily obtained raw materials, simple process, low cost, higher efficiency of photocatalytic degradation of automobile exhaust and easiness in implementation.
In order to solve the technical problem, the invention provides a preparation method of a sand-containing fog seal pavement material with an effect of degrading automobile exhaust, which comprises the following steps:
(1) washing the activated carbon with distilled water, then putting the washed activated carbon into a dryer for drying, and then cooling the dried activated carbon for later use,
(2) mixing a silane coupling agent into 95% alcohol, adding the silane coupling agent and stirring the mixed solution at the same time, so that the silane coupling agent and the alcohol are fully reacted;
(3) then putting the weighed mass of nano titanium dioxide into the mixed solution of the silane coupling agent and the alcohol, and stirring by using a high-speed shearing machine to fully react;
(4) putting the activated carbon treated in the step (1) into water, and stirring the activated carbon uniformly by using a high-speed stirrer;
(5) mixing the mixed liquor obtained in the step (3) and the mixed liquor obtained in the step (4) according to a ratio, putting the mixed liquor into an ultrasonic stirrer, starting the ultrasonic stirrer to perform ultrasonic mixing for more than 1 hour, and finishing the mixing to form mixed material slurry;
(6) then directly doping the mixture slurry obtained in the step (5) into special emulsified asphalt and uniformly stirring to obtain a pavement material; the pavement material is directly mixed with sand and stirred uniformly, and then put into a spreader to be spread on the paved asphalt concrete pavement.
And (5) drying and damaging the mixture slurry obtained in the step (5) to obtain the photocatalytic additive powder capable of degrading the automobile exhaust.
Compared with the prior art, the invention has the beneficial effects that:
the invention has the substantive characteristics that:
the invention provides a preparation method of a novel seal pavement material for degrading automobile exhaust by using titanium dioxide and active carbon. The method has the advantages that the efficiency of photocatalytic degradation of tail gas can be greatly enhanced by mixing the nano TiO2 with the titanium dioxide, the characteristics of large surface area of the road surface, wide distribution, direct action of tires and tail gas and the like are utilized, the nano TiO2 and the tail gas are added into mixed liquid of alcohol and a silane coupling agent and are mixed with activated carbon by using equipment such as a high-speed shearing machine, a high-speed stirring machine and the like, the silane coupling agent is added in the method, so that the surface activity of the titanium dioxide is increased, the photocatalytic performance of the prepared material is improved, the tedious working steps of a sol-gel method are avoided, the preparation process of the road material is simplified, and the possibility is increased for large. Secondly, the sand-containing fog seal layer is applied to the asphalt-based material, and only one layer is needed to be sprayed on the asphalt concrete pavement, so that the cost of paving the photocatalysis degradation tail gas pavement is reduced, and the photocatalysis degradation tail gas pavement has strong tail gas degradation capability.
The invention has the remarkable advantages that:
(1) the materials (active carbon, alcohol, silane coupling agent, sand and emulsified asphalt) involved in the invention are easy to obtain, the preparation process is simple and convenient, and the engineering practice is facilitated.
(2) The sealing pavement material prepared by the method has a strong photocatalytic function, and compared with other photocatalytic degradation tail gas asphalt concrete materials, the sealing pavement material has the advantages that the amount of titanium dioxide and activated carbon added is less under the same condition, and the sealing pavement material is more economic and environment-friendly.
(3) The sand-containing fog seal layer material can be prepared by mixing on site or prefabricating in a plant in actual engineering, and the mixing method is simple, convenient and quick and has higher flexibility.
Detailed Description
The present invention is further explained with reference to the following examples, which should not be construed as limiting the scope of the present invention.
The invention discloses a method for preparing sand-containing fog seal pavement material with the function of degrading automobile exhaust, which comprises the following steps:
(1) the activated carbon is washed by distilled water, then is put into a dryer for drying for about 24 hours, and then is placed in a cool place for standby. Impurities such as magnesium, calcium and the like which possibly affect the photocatalytic effect in the activated carbon can be removed by repeatedly washing the activated carbon with distilled water, so that the activated carbon can exert the maximum effect;
(2) the silane coupling agent is mixed into 95% alcohol, and the mixture is stirred while the silane coupling agent is added, so that the silane coupling agent and the alcohol are fully reacted.
(3) Then putting the weighed mass of nano titanium dioxide into the mixed solution of the silane coupling agent and the alcohol (the carbon-titanium ratio is 0.65-0.7), and stirring by using a high-speed shearing machine to fully react;
(4) putting the activated carbon treated in the step (1) into water, and stirring the activated carbon uniformly by using a high-speed stirrer;
(5) mixing the mixed liquor obtained in the step (3) and the mixed liquor obtained in the step (4) according to a ratio, putting the mixed liquor into an ultrasonic stirrer, starting the ultrasonic stirrer to perform ultrasonic mixing for about 1 hour, and then completing the mixing, wherein the step forms mixed material slurry with strong adsorption capacity and photocatalytic capacity;
(6) then directly doping the mixture slurry obtained in the step (5) into special emulsified asphalt and uniformly stirring to obtain a pavement material; the pavement material is directly mixed with sand and stirred uniformly, and then put into a spreader to be spread on the paved asphalt concrete pavement.
The invention can also dry the mixture slurry obtained in the step (5), and put into a ball mill for damage after drying to obtain powder which can be used as a powdery photocatalytic additive; when in use, the powder is mixed with a proper amount of sand and special emulsified asphalt to form a sand-containing fog seal pavement material with degraded tail gas, and the pavement material can be directly sprayed on an asphalt concrete pavement with the help of a spreading vehicle. The pavement materials prepared by the two methods can be realized in a later sand-containing fog seal.
Comprehensively comparing the influence of the mixing amount proportion and the rotating speed setting of the special emulsified asphalt, the sand and the mixture slurry (or powder) on the pavement performance and the catalytic degradation effect of the sealed pavement, and determining the optimal mixing amount proportion of the special emulsified asphalt, the sand and the mixture slurry for pavement sealing.
Examples
The embodiment of the preparation method of the sand-containing fog seal pavement material with the function of degrading the automobile exhaust,
taking a proper amount of 100g of activated carbon, putting the activated carbon into a basin, washing the activated carbon with distilled water, then putting the activated carbon into a dryer to dry for about 24 hours, and then placing the activated carbon to a cool place for standby.
7g of the silane coupling agent was mixed into a beaker containing a sufficient amount (more than 500ml) of 95% ethanol, and the mixture was stirred with a glass rod while adding the silane coupling agent, so that the silane coupling agent and the ethanol were sufficiently mixed and reacted.
And then 70g of nano titanium dioxide with the weighed mass is put into the mixed solution of the silane coupling agent and the alcohol, and is stirred by a high-speed shearing machine to fully react. The high-speed shearer model is NK-CJQ 1526A.
Then, the activated carbon was put into 80g of distilled water and stirred with a high-speed stirrer to be uniform.
Mixing a proper amount of mixed solution of silane coupling agent, alcohol and activated carbon in a glass beaker to obtain new mixed solution, putting the new mixed solution into an ultrasonic stirrer, starting an instrument to perform ultrasonic mixing for about 1 hour, and then completing the mixing, wherein the step forms mixed material slurry with strong adsorption capacity and photocatalytic capacity.
And finally, directly mixing the obtained mixture slurry into emulsified asphalt and uniformly stirring to obtain a sand-fog-containing seal pavement material with a tail gas degradation function, adding sand into the pavement material prepared by the preparation method for fully stirring, putting the mixed slurry into a spreading machine for spreading on the paved asphalt concrete pavement, and thus obtaining the seal pavement.
And (3) mixing on site at the road section which needs to be provided with the sand-containing fog sealing layer material, and controlling the temperature of the on-site environment to be 20-30 ℃.
Claims (2)
1. A preparation method of a sand-containing fog seal pavement material with an automobile exhaust degradation effect comprises the following steps:
(1) washing the activated carbon with distilled water, then putting the washed activated carbon into a dryer for drying, and then cooling the dried activated carbon for later use,
(2) mixing a silane coupling agent into 95% alcohol, adding the silane coupling agent and stirring the mixed solution at the same time, so that the silane coupling agent and the alcohol are fully reacted;
(3) then putting the weighed mass of nano titanium dioxide into the mixed solution of the silane coupling agent and the alcohol, and stirring by using a high-speed shearing machine to fully react;
(4) putting the activated carbon treated in the step (1) into water, and stirring the activated carbon uniformly by using a high-speed stirrer;
(5) mixing the mixed liquor obtained in the step (3) and the mixed liquor obtained in the step (4) according to a ratio, putting the mixed liquor into an ultrasonic stirrer, starting the ultrasonic stirrer to perform ultrasonic mixing for more than 1 hour, and finishing the mixing to form mixed material slurry;
(6) then directly doping the mixture slurry obtained in the step (5) into special emulsified asphalt and uniformly stirring to obtain a pavement material; the pavement material is directly mixed with sand and stirred uniformly, and then put into a spreader to be spread on the paved asphalt concrete pavement.
2. The preparation method according to claim 1, wherein the photocatalytic additive powder capable of degrading automobile exhaust is obtained after drying and breaking the mixture slurry obtained in the step (5).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911098265.9A CN110777606B (en) | 2019-11-12 | 2019-11-12 | Preparation method of sand-containing fog seal pavement material with function of degrading automobile exhaust |
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| CN201911098265.9A CN110777606B (en) | 2019-11-12 | 2019-11-12 | Preparation method of sand-containing fog seal pavement material with function of degrading automobile exhaust |
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| CN110777606A true CN110777606A (en) | 2020-02-11 |
| CN110777606B CN110777606B (en) | 2021-10-08 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102078751A (en) * | 2009-11-27 | 2011-06-01 | 东北林业大学 | Bituminous pavement penetrating agent with function of purifying oxynitride (NOx) discharged from vehicles |
| CN104150823A (en) * | 2014-07-25 | 2014-11-19 | 长沙理工大学 | Preparation method of blended cement concrete capable of degrading NOx |
| CN105504842A (en) * | 2016-01-12 | 2016-04-20 | 上海市政工程设计研究总院（集团）有限公司 | Emulsified asphalt material for degrading automobile exhaust and preparation method thereof |
| JP2017166416A (en) * | 2016-03-16 | 2017-09-21 | 日立建機株式会社 | Rolling pressure machine |
| CN109304060A (en) * | 2017-07-28 | 2019-02-05 | 孙梓译 | Material for air purification and preparation method thereof with self-catalysis effect |
| CN110003725A (en) * | 2019-04-26 | 2019-07-12 | 招商局重庆交通科研设计院有限公司 | A kind of efficiently durable tail gas degradable material and preparation method thereof |
-
2019
- 2019-11-12 CN CN201911098265.9A patent/CN110777606B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102078751A (en) * | 2009-11-27 | 2011-06-01 | 东北林业大学 | Bituminous pavement penetrating agent with function of purifying oxynitride (NOx) discharged from vehicles |
| CN104150823A (en) * | 2014-07-25 | 2014-11-19 | 长沙理工大学 | Preparation method of blended cement concrete capable of degrading NOx |
| CN105504842A (en) * | 2016-01-12 | 2016-04-20 | 上海市政工程设计研究总院（集团）有限公司 | Emulsified asphalt material for degrading automobile exhaust and preparation method thereof |
| JP2017166416A (en) * | 2016-03-16 | 2017-09-21 | 日立建機株式会社 | Rolling pressure machine |
| CN109304060A (en) * | 2017-07-28 | 2019-02-05 | 孙梓译 | Material for air purification and preparation method thereof with self-catalysis effect |
| CN110003725A (en) * | 2019-04-26 | 2019-07-12 | 招商局重庆交通科研设计院有限公司 | A kind of efficiently durable tail gas degradable material and preparation method thereof |
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