CN110343395A - A kind of emulsified asphalt for realizing that cured strength is improved using microwave - Google Patents
A kind of emulsified asphalt for realizing that cured strength is improved using microwave Download PDFInfo
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- CN110343395A CN110343395A CN201910642812.9A CN201910642812A CN110343395A CN 110343395 A CN110343395 A CN 110343395A CN 201910642812 A CN201910642812 A CN 201910642812A CN 110343395 A CN110343395 A CN 110343395A
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- active carbon
- microwave
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- curing agent
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/28—Treatment by wave energy or particle radiation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2395/00—Bituminous materials, e.g. asphalt, tar or pitch
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2463/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins
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- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Road Paving Structures (AREA)
Abstract
The application provides a kind of emulsified asphalt for realizing that cured strength is improved using microwave, and binder is dissolved in solvent, and filtration drying after absorption is sufficiently stirred in active carbon is added at room temperature and obtains the active carbon for being adsorbed with binder；Curing agent is dissolved in solvent, filtration drying after absorption is sufficiently stirred in active carbon is added at room temperature and obtains the active carbon for being adsorbed with curing agent；Binder active carbon will be contained and active carbon containing curing agent is added in basic emulsified asphalt, be uniformly mixed, microwave is utilized and realizes the emulsified asphalt that cured strength improves.The application uses for reference the Microwave-Activated Carbon method and binding substances method of field of waste water treatment, realizes body phase quick release binder in situ and curing agent in emulsified asphalt.Bonded and solidified using the surface of binder and curing agent between different pitches little particle, realize the short grained reunion of different pitches, thus improve solidify after asphalt material intensity.
Description
Technical field
Realize that the emulsified asphalt of cured strength raising more particularly to a kind of microwave promote using microwave this application involves a kind of
The emulsified asphalt for improving cured strength is discharged into adhesive.
Background technique
With China's rapid economic development, highway construction scale constantly expands, understanding research of the people to pavement material
More deep, the paving material of various function admirables is used widely in road engineering.Emulsified asphalt is mixed as cold-mix asphalt
The main raw material(s) of material is closed, there is the distinguishing feature constructed at room temperature, can reduce construction temperature, reduce environmental pollution,
Energy saving, material facilitates construction, improves construction quality, extends construction seasons, expands boundary of works area.Therefore, emulsified asphalt has been
Through being widely used in field of road.Emulsified asphalt is to melt pitch heat, by mechanical effect, with tiny micro-droplet status
It is scattered among the aqueous solution containing emulsifier, forms the asphalt emulsion of oil-in-water shape.Asphalt emulsifier is by hydrophilic polar group
It is formed with the nonpolar base of oleophylic, after emulsifier is added in oil solution, two groups generation of emulsifier is aligned,
Two interfaces of grease are connected, to prevent the mutually exclusive effect between them, after being dispersed with stirring, pitch can be with
Particulate form is steadily dispersed in water.In pavement construction, after emulsified asphalt and aggregate contact, emulsified asphalt is to play it to glue
The function of knot, pitch droplet are separated from water phase, the bitumen particle phase coalescence dispersed in lotion, the shape on aggregate or road surface
At the cover film of continuous binder, which determines the intensity of emulsified asphalt after hardening.Emulsified asphalt demulsification solidified
Cheng Zhong, granular boundary caused by the evaporation of moisture, temperature change the processes such as shrinks and all may cause to be generated between pitch little particle
Small crackle, if pitch little particle reunite when there are small crackle, necessarily affect the asphalt binder after solidifying
Cementing strength, it is microcosmic on fine crack constantly expand the appearance for eventually leading to bituminous pavement Macro Problems, as bituminous pavement goes out
The diseases such as existing peeling, pit slot, Moisture Damage.The defect generated when pitch little particle is reunited is reduced to be conducive to improve the drip after solidifying
Green intensity.
The application is based on above-mentioned cognition and proposes that one kind is conducive to pitch little particle in emulsified bituminous materials and reunites between each other
Method, it is solid so as to improve by promoting the reunion between pitch little particle to reduce the defect between pitch little particle
The intensity of pitch after change.
Summary of the invention
The application provides a kind of emulsified asphalt for realizing that cured strength is improved using microwave, uses for reference field of waste water treatment
Microwave-Activated Carbon method and binding substances method realize body phase quick release binder in situ and curing agent in emulsified asphalt.Benefit
It is bonded and is solidified with the surface of binder and curing agent between different pitches little particle, realize that different pitches are short grained
Reunite, avoid the interfacial separation generated between the different pitches little particle as caused by unfavorable conditions, reduce pitch little particle it
Between such as minute crack defect, thus improve solidify after asphalt material intensity.Specific technical solution is as follows:
A kind of emulsified asphalt for being realized that cured strength is improved using microwave, is made by the steps:
1) binder is dissolved in solvent, filtration drying after absorption is sufficiently stirred in active carbon is added at room temperature and is adsorbed
There is the active carbon of binder, is denoted as active carbon containing binder；
2) curing agent is dissolved in solvent, filtration drying after absorption is sufficiently stirred in active carbon is added at room temperature and is adsorbed
There is the active carbon of curing agent, is denoted as active carbon containing curing agent；
3) active carbon containing binder that step 1) obtains and the active carbon containing curing agent that step 2) obtains are added to basis
It in emulsified asphalt, is uniformly mixed, is utilized microwave and realizes the emulsified asphalt that cured strength improves.
Preferably, in the emulsified asphalt that cured strength raising is realized using microwave, the quality of the active carbon containing binder contains
Amount is 1-10%, and the mass content of the active carbon containing curing agent is 1-10%, active carbon containing binder and the active carbon containing curing agent
Mass ratio is 1:0.5-2.
Preferably, in step 1), binder is dissolved in the water, the binder that mass content is 1-10% is formed and disperses
Liquid bonds the mass ratio 1:0.05-0.1 of agent dispersing liquid and active carbon, drying at room temperature after filtering.
Preferably, in step 2), curing agent is dissolved in the water, the curing agent that mass content is 1-10% is formed and disperses
Liquid solidifies the mass ratio 1:0.05-0.1 of agent dispersing liquid and active carbon, drying at room temperature after filtering.
Preferably, in step 1), for active carbon particle using the active carbon based on mesoporous, partial size is 200nm-2 μm,
In step 2), active carbon particle uses the active carbon based on micropore, and partial size is 100nm-2 μm.
Preferably, binder is water-soluble epoxy resin；Curing agent is m-xylene diamine, diethylenetriamines, four sub- second
The polyamines such as five amine of base.
Preferably, the quality solid content of basic emulsified asphalt is 60-70%.
A method of emulsified asphalt cured strength being improved using microwave, using strong after the above-mentioned realization solidification using microwave
The emulsified asphalt improved is spent, is administered at normal temperature, is carried out at microwave using emulsified asphalt of the microwave to application before curing
Reason, so that activated carbon temperature increases, quick release binder and curing agent in situ, so that strong after emulsified asphalt solidification
Degree improves.
Preferably, microwave irradiation power is 100~1200W, microwave frequency 2450MHz, microwave treatment 1-30min.
Preferably, the activated carbon temperature of microwave is absorbed between 35-70 DEG C.
The utility model has the advantages that
(1) the application uses for reference the Microwave-Activated Carbon method and binding substances method of field of waste water treatment, in emulsified asphalt
Quick release binder and curing agent between pitch little particle, so that different pitch little particle interfacial adhesions is together, thus
Be conducive to different pitch little particles during bitumen solidification to reunite to be biggish pitch particle, and can be avoided the change of temperature
The unfavorable conditions such as change cause the case where separation of different pitches little particle surface or discretization of half-space surface, the thus generation of Crack prevention, from
And can be improved the pitch intensity after solidifying, and binder is uniformly present in the body phase of the pitch after solidifying, which makees
Be able to suppress pitch generate or expanded crack.Relative to directly by adhesive addition with emulsified asphalt in, the application binder
More evenly, it is excessive to avoid binder in the pitch of part for dispersion, and another part binder it is very few caused by pitch globality
It can be uneven.
(2) the application increases the hot spot of temperature using active carbon particle as that can absorb microwave, further using living
Property carbon particle favors low temperature in absorption, the characteristics of high temperature is conducive to desorption, makes its abundant absorption binder and absorption at low temperature
Agent, and after being well-dispersed between pitch little particle, microwave treatment is carried out to it, increases its temperature, so that by inhaling
Dispersion and pitch little particle surface is quickly desorbed in attached at least part binder and adsorbent, after binder and adsorbent contact
Different pitch little particles can be linked together, so as to make that there is inseparable fixation between pitch little particle
Power realizes located growth.The application cleverly utilizes the absorption microwave and adsorption/desorption characteristic combination binder and solid of activated carbon
The quick release of agent realizes the purpose of asphalt material intensity after raising solidifies.
(3) the application is using the active carbon based on the active carbon and micropore based on mesoporous respectively as binder and curing agent
Adsorbent, the aperture of active carbon can be divided into macropore (be greater than 50nm), mesoporous (2-50nm), micropore (being less than 2nm), by not
The active carbon (the hole ratio is more than at least over 1/3) based on a certain hole can be obtained with preparation method, suction-operated is main
Mesoporous and micropore is betided, and the suction-operated of macropore is unobvious, according to the molecular size of binder and curing agent, the application choosing
Select it is mesoporous based on activated carbon adsorption macromolecular binder, and select the solidification of the activated carbon adsorption small molecule based on micropore
Agent, so as to realize the matching in aperture, so that every kind of activated carbon can fully play suction-operated, to preferably mention
Asphalt material intensity after high solidification.
Specific embodiment
More detailed explanation and explanation are made to technical solution of the present invention and advantage below.It should be understood that saying
The content presented in bright book and specific embodiment, just to clearly illustrate technical solution of the present invention and its excellent
Point, is not construed as limiting protection scope of the present invention.Those skilled in the art can on the basis of specification disclosure,
For it is various it is reasonable changed after technical solution, as long as it does not depart from the spirit of the invention, the skill after various change
Art scheme is included within protection scope of the present invention.
Embodiment 1
1) water-soluble epoxy resin is dissolved in the water, forms the bonding agent dispersing liquid that mass content is 5%, exists at room temperature
In the 100g dispersion liquid be added 8g it is mesoporous based on partial size be 800nm active carbon be sufficiently stirred absorption after filter, drying at room temperature
The active carbon for being adsorbed with binder is obtained, active carbon containing binder is denoted as；
2) m-xylene diamine is dissolved in solvent, forms the solidification agent dispersing liquid that mass content is 5%, exists at room temperature
It is added after absorption is sufficiently stirred in the active carbon that the partial size based on 8g micropore is 500nm and filters in the 100g dispersion liquid, drying at room temperature
The active carbon for being adsorbed with curing agent is obtained, active carbon containing curing agent is denoted as；
3) by 5g active carbon containing binder and 5g, active carbon containing curing agent is added to the basis 90g emulsified asphalt (solid content
60%) it in, is uniformly mixed with gathering materials of matching of fix level, is utilized microwave and realizes the emulsified asphalt mixing that cured strength improves
Material.
Embodiment 2
1) water-soluble epoxy resin is dissolved in the water, forms the bonding agent dispersing liquid that mass content is 1%, exists at room temperature
In the 100g dispersion liquid be added 10g it is mesoporous based on partial size be 800nm active carbon be sufficiently stirred absorption after filter, drying at room temperature
The active carbon for being adsorbed with binder is obtained, active carbon containing binder is denoted as；
2) m-xylene diamine is dissolved in solvent, forms the solidification agent dispersing liquid that mass content is 10%, exists at room temperature
It is added after absorption is sufficiently stirred in the active carbon that the partial size based on 5g micropore is 500nm and filters in the 100g dispersion liquid, drying at room temperature
The active carbon for being adsorbed with curing agent is obtained, active carbon containing curing agent is denoted as；
3) by 8g active carbon containing binder and 4g, active carbon containing curing agent is added to the basis 88g emulsified asphalt (solid content
60%) it in, is uniformly mixed with gathering materials of matching of fix level, is utilized microwave and realizes the emulsified asphalt mixing that cured strength improves
Material.
Embodiment 3
1) water-soluble epoxy resin is dissolved in the water, forms the bonding agent dispersing liquid that mass content is 10%, at room temperature
Be added in the 100g dispersion liquid 5g it is mesoporous based on partial size be 800nm active carbon absorption is sufficiently stirred after filter, room temperature is dry
The dry active carbon for obtaining being adsorbed with binder, is denoted as active carbon containing binder；
2) m-xylene diamine is dissolved in solvent, forms the solidification agent dispersing liquid that mass content is 1%, exists at room temperature
It is added after absorption is sufficiently stirred in the active carbon that the partial size based on 10g micropore is 500nm and filters in the 100g dispersion liquid, drying at room temperature
The active carbon for being adsorbed with curing agent is obtained, active carbon containing curing agent is denoted as；
3) by 4g active carbon containing binder and 8g, active carbon containing curing agent is added to the basis 88g emulsified asphalt (solid content
60%) it in, is uniformly mixed with gathering materials of matching of fix level, is utilized microwave and realizes the emulsified asphalt mixing that cured strength improves
Material.
Embodiment 4
It is same as Example 1, but microporous activated carbon is used in step 1, mesoporous activated carbon is used in step 2.
Comparative example 1
It is same as Example 1, but active carbon containing binder and active carbon containing curing agent are not added.
Comparative example 2
It is same as Example 1, but active carbon containing curing agent is not added.
Comparative example 3
It is same as Example 1, but active carbon containing binder is not added.
Comparative example 4
It is same as Example 1, but add the unadsorbed binder of equivalent and the active carbon of curing agent.
The Emulsified Asphalt Mixture of pitch intensity pours into Marshall examination film after the raising prepared is solidified, by two-sided each
Real 75 requirement shaping test pieces are hit, microwave frequency 2450MHz, microwave treatment 10min are shown and controlled by infrared radiation thermometer
The hot(test)-spot temperature on the surface that emulsified asphalt processed exposes makes active carbon temperature to indicate active carbon temperature, by controlling microwave power
At 50 DEG C or so, then mold stands 15h at 25 DEG C, obtains cured asphalt for control.The cured pitch is mixed
Material demoulding is closed, cleavage strength test, Marshall stability test test are carried out.By the variation of asphalt strength character come
React the variation of bituminous cements intensity.
1 cleavage strength of table and Marshall stability test result
| Sample | Cleavage strength (MPa) | Marshall stability (KN) |
| Embodiment 1 | 1.18 | 11.6 |
| Embodiment 2 | 1.08 | 10.2 |
| Embodiment 3 | 1.12 | 10.7 |
| Embodiment 4 | 1.05 | 10.4 |
| Comparative example 1 | 0.75 | 8.8 |
| Comparative example 2 | 0.91 | 9.6 |
| Comparative example 3 | 0.71 | 8.7 |
| Comparative example 4 | 0.70 | 8.6 |
The Emulsified Asphalt Mixture of pitch intensity pours into track examination film after the raising prepared is solidified, using static pressure method
Shaping test piece, microwave frequency 2450MHz, microwave treatment 10min are shown by infrared radiation thermometer and control emulsified asphalt exposing
Surface hot(test)-spot temperature to indicate active carbon temperature, by control microwave power make active carbon temperature control on 50 DEG C of left sides
The right side, then mold stands 15h at 25 DEG C, obtains cured asphalt.The cured asphalt is demoulded, sample
It is divided into duplicate, a sample is cut into the girder test specimen of 250mm*30mm*35mm, carries out bending test test；A sample
Product carry out wheel tracking test.The variation of bituminous cements intensity is reacted by the variation of asphalt strength character.
2 flexural tensile strength of table and wheel tracking test result
By Tables 1 and 2 comparing embodiment 1-4 and comparative example 1 it can be found that the technical solution of the application can will solidify
The intensity of asphalt afterwards is greatly improved, and illustrates the binder of the application original position quick release in pitch body phase
Different pitch little particles can be bonded with curing agent, to be conducive to pitch little particle located growth, avoids generating interface point
From defect, to improve the bituminous cements intensity after solidifying.By comparing embodiment 1 and comparative example 2,3 it can be found that
The effect of the application is individually not achieved using adhesive and curing agent, curing agent, which is only added, cannot achieve between pitch little particle
Effectively bonding, and introduce active carbon the short grained combination of pitch may be caused to hinder, and be only added binder be can
The bituminous cements intensity after solidifying is improved, but lacks curing agent and binder is solidified from cracking, different pitches
Short grained combination is not added after curing agent closely.By comparing embodiment 1 and comparative example 4 it can be found that due to active carbon
Unadsorbed binder and curing agent are substantially equivalent to and only introduce active carbon, do not have the asphalt adhesive improved after solidifying completely
The ability of ramming material intensity.By comparing embodiment 1 and embodiment 4 it can be found that according to molecular size using based on different pore size
Active carbon sufficiently molecule can be adsorbed, so as to desorption when discharge more binders and curing agent, thus
The bituminous cements intensity after solidifying can more fully be improved.
The application uses for reference the Microwave-Activated Carbon method of field of waste water treatment, and using the characterization of adsorption of active carbon, conjugate is viscous
Conjunction method realizes body phase quick release binder in situ and curing agent in emulsified asphalt, using binder and curing agent not
It is bonded and is solidified with the surface between pitch little particle, the short grained reunion growth of different pitches is realized, to improve solid
The intensity of asphalt material after change.
Although the content of present invention includes specific embodiment, to those skilled in the art it is apparent that without departing from
In the case where the invention element or scope of present claims and its equivalent technical solutions, various shapes can be made to these embodiments
Replacement or variation in formula and in details.Embodiment described herein should be considered only in descriptive sense, be not intended to limit
The purpose of system.The description of feature and aspect in each example is deemed applicable to the similar features in other embodiments
And aspect.Therefore, the scope of the present invention should not be by specifically describing to be limited, but by the limit of claim technical solution
It is fixed, and all changes in the range of present claims and its equivalent are interpreted to be included in technical solution of the present invention
Within.
Claims (10)
1. a kind of emulsified asphalt for being realized that cured strength is improved using microwave, is made by the steps:
1) binder is dissolved in solvent, at room temperature be added active carbon be sufficiently stirred absorption after filtration drying obtain being adsorbed with it is viscous
The active carbon for tying agent, is denoted as active carbon containing binder；
2) curing agent is dissolved in solvent, filtration drying after absorption is sufficiently stirred in active carbon is added at room temperature and obtains being adsorbed with admittedly
The active carbon of agent is denoted as active carbon containing curing agent；
3) active carbon containing binder that step 1) obtains and the active carbon containing curing agent that step 2) obtains are added to basic emulsification
It in pitch, is uniformly mixed, is utilized microwave and realizes the emulsified asphalt that cured strength improves.
2. the emulsified asphalt according to claim 1 for being realized that cured strength is improved using microwave is realized solid using microwave
In the emulsified asphalt that intensity improves after change, the mass content of the active carbon containing binder is 1-10%, the matter of the active carbon containing curing agent
Amount content is 1-10%, and the mass ratio of active carbon containing binder and the active carbon containing curing agent is 1:0.5-2.
3. the emulsified asphalt according to claim 1 for realizing that cured strength improves using microwave will glue in step 1)
Knot agent is dissolved in the water, and forms the bonding agent dispersing liquid that mass content is 1-10%, bonds the quality of agent dispersing liquid and active carbon
Than 1:0.05-0.1, drying at room temperature after filtering.
4. the emulsified asphalt according to claim 1 for realizing that cured strength improves using microwave will be consolidated in step 2)
Agent is dissolved in the water, and forms the solidification agent dispersing liquid that mass content is 1-10%, solidifies the quality of agent dispersing liquid and active carbon
Than 1:0.05-0.1, drying at room temperature after filtering.
5. the emulsified asphalt according to claim 1 for realizing that cured strength is improved using microwave, in step 1), activity
For charcoal particle using the active carbon based on mesoporous, partial size is 200nm-2 μm, in step 2), active carbon particle use micropore for
Main active carbon, partial size are 100nm-2 μm.
6. the emulsified asphalt according to claim 1 for realizing that cured strength is improved using microwave, binder is water solubility
Epoxy resin；Curing agent is the polyamines such as m-xylene diamine, diethylenetriamines, tetren.
7. the emulsified asphalt according to claim 1 for realizing that cured strength is improved using microwave, basic emulsified asphalt
Quality solid content is 60-70%.
8. a kind of method for improving emulsified asphalt cured strength using microwave, using described in -7 any one according to claim 1
Realize emulsified asphalt that cured strength improves using microwave, be administered at normal temperature, before curing using microwave to applying
Emulsified asphalt carries out microwave treatment, so that activated carbon temperature increases, quick release binder and curing agent in situ, so as to
Enough so that emulsified asphalt cured strength improves.
9. the method according to claim 8 for improving emulsified asphalt cured strength using microwave, microwave irradiation power are
100~1200W, microwave frequency 2450MHz, microwave treatment 1-30min.
10. the method according to claim 9 for improving emulsified asphalt cured strength using microwave, absorbs the activity of microwave
Carbon temperature is between 35-70 DEG C.
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