CN106883629A - A kind of preparation method of warm mix regeneration asphalt - Google Patents
A kind of preparation method of warm mix regeneration asphalt Download PDFInfo
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- CN106883629A CN106883629A CN201710253551.2A CN201710253551A CN106883629A CN 106883629 A CN106883629 A CN 106883629A CN 201710253551 A CN201710253551 A CN 201710253551A CN 106883629 A CN106883629 A CN 106883629A
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- asphalt
- preparation
- regeneration asphalt
- warm mix
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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
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/20—Recycled plastic
- C08L2207/22—Recycled asphalt
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
Abstract
The invention provides a kind of preparation method of warm mix regeneration asphalt, pre-processed after first bituminous paving RAP materials are reclaimed, obtain compound；Remix material, plasticiser, glycerine, bentonite, Hydroxypropyl methylcellulose and light oil and 30 40min of mixing are stirred under the conditions of 50 60 DEG C, obtain mix asphalt；Then ethanol water, dioctyl phthalate and polyisobutene are taken to be added in gained mix asphalt, 80 90 DEG C are heated to, 20 30min are stirred, 110 120 DEG C are then heated to, regenerative agent is added, continues to stir 5 10min, obtain regeneration asphalt.The present invention is arranged in pairs or groups by specific component so that pitch can regenerate well under the conditions of warm mix, reduces the influence to environment in energy loss and asphalt production and work progress；The recycling of RAP is effectively realized, environmental pollution is reduced and land resource is wasted.
Description
Technical field
The invention belongs to pavement material technical field, and in particular to a kind of preparation method of warm mix regeneration asphalt.
Background technology
As the continuous propulsion that National Highway is built, China's highway total kilometrage have reached world prostatitis, drip
Blue or green pavement structure due to driving is comfortable, the advantage such as dust is few, maintenances is convenient and be widely used, at present, China Higher grade
About 90% is asphalt concrete pavement in highway pavement.
During highway operation, asphalt pavement structure is subject to the influence such as traffic loading, natural environment ringing, its property
Be able to can constantly decay.Accordingly, it would be desirable to the good high grade highway pavement of making is regularly conserved and transformed.In road network maintenance
In transformation process, damaged for pavement structure, ageing of asphalt, its function performance (i.e. flatness, coefficient of friction, construction
Depth, noise etc.) with structure performance (fatigue, rut, cold cracking, Moisture Damage with aging) decay, be unsatisfactory for requiring, need
Again repair.When pavement disease is lighter, mainly using modes such as sectional repair, micro-surfacing treating or overlay treatments, when road surface disease
When evil is more serious, maintenance demand cannot be met only with above several ways, at this moment need to tie the road surface for disease occur
Structure carries out milling, again making bituminous paving.But the build cost of costliness can be produced in this way, and can cause right
The huge waste of old asphalt mixture and the pollution to natural environment.Therefore, it is real how effectively using discarded asphalt
The Applied of Asphalt Pavement Recycle Technique of existing RAP regenerations receives the favor of researcher.
In pavement of road work progress, the production serious harm ecological environment of existing hot-mix asphalt mixture, high temperature
Mix and stir and consume substantial amounts of fuel, and discharge waste gas (including the CO of thousands of tons2、CO、SO2、NOxDeng).At the same time, it is old
The accumulation of the waste and old compound of tens million of tons is caused during pavement recapping, the life and production for giving people bring unfavorable shadow
Ring.Warm-mixed recycled asphalt mixture technology integrates energy-saving and emission-reduction and reclamation of old material using dual-use function, in asphalt
Production process in effectively reduce the temperature of mixing and stirring of asphalt, waste gas discharge and fuel consumption are reduced, while will be waste and old
Asphalt-regenerating is utilized, the focus such as waste gas discharge, mineral aggregate exploitation, fuel consumption and old material accumulation for occurring in being built to solving road
Problem plays active and effective impetus.
The content of the invention
It is an object of the invention to provide a kind of preparation method of warm mix regeneration asphalt, gained warm mix regeneration asphalt needle penetration exists
47-52/0.1mm, ductility are in 102.34-118.73cm, softening point in 49.5-51.4 DEG C, 135 DEG C of dynamic viscosities in 329-
361mPa·s。
A kind of preparation method of warm mix regeneration asphalt, comprises the following steps：
Step 1, pre-processes after bituminous paving RAP materials are reclaimed, and obtains compound；
Step 2, in parts by weight, take 60-80 parts of step 1 gained compound, plasticiser 0.8-2 parts, glycerine 5-10 parts,
Bentonite 2-4 parts, Hydroxypropyl methylcellulose 1-3 parts and light oil 10-20 parts is stirred mixing 30-40min under the conditions of 50-60 DEG C,
Obtain mix asphalt；
Step 3, in parts by weight, takes ethanol water 20-30 parts, dioctyl phthalate 1-2 parts and polyisobutene
0.5-2 parts is added in step 2 gained mix asphalt, is heated to 80-90 DEG C, stirs 20-30min, then heats to 110-120
DEG C, regenerative agent is added, continue to stir 5-10min, obtain regeneration asphalt.
Further, pretreatment is will to be obtained after crushing, sieving, dry after bituminous paving RAP material recoveries in step 1
Particle diameter is the particle of below 10mm.
Further, the plasticiser is dioctyl phthalate.
Further, the light oil is furfural oil.
Further, the mass concentration of the ethanol water is 70-80%.
Further, the regenerative agent is by sodium dihydrogen phosphate 0.5-2 parts in parts by weight, dicyclohexyl amine 0.1-0.3
Part, talcum powder 1-3 parts, tetramethylene dimethacrylate 1-3 parts and 3-6 parts of mixture of composition of furfural oil.
In the present invention, glycerine can intensify the fluid state of compound with bentonitic while adding, and RAP is more held
Easily regeneration；Ethanol water comes to life under the conditions of 80-90 DEG C, with reference to the common of dioctyl phthalate and polyisobutene
Effect enhances time the melting property of mix asphalt, promotes the regeneration of the RAP under the conditions of 110-120 DEG C.Pass through phosphoric acid in regenerative agent
The synergy of sodium dihydrogen and dicyclohexyl amine, can reduce asphalt softening point, improve the ductility of pitch after regeneration.
Warm mix regeneration asphalt needle penetration of the invention is in 47-52/0.1mm, ductility in 102.34-118.73cm, softening point
In 49.5-51.4 DEG C, 135 DEG C of dynamic viscosities in 329-361mPas, meet road asphalt skill specified in JTG F40-2004
Art index request.The present invention is arranged in pairs or groups by specific component so that pitch can regenerate well under the conditions of warm mix, reduce
Influence in energy loss and asphalt production and work progress to environment；The recycling of RAP is effectively realized, environment is reduced dirty
Dye and land resource are wasted.
Specific embodiment
Below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described.
Obviously, described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based on the reality in the present invention
Example is applied, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made all belongs to
In the scope of protection of the invention.
Embodiment 1
A kind of preparation method of warm mix regeneration asphalt, comprises the following steps：
Step 1, pre-processes after bituminous paving RAP materials are reclaimed, and obtains compound；
Step 2, in parts by weight, takes 60 parts of step 1 gained compound, 0.8 part of plasticiser, 5 parts of glycerine, bentonite 2
10 parts of part, 1 part of Hydroxypropyl methylcellulose and light oil stir mixing 40min under the conditions of 50 DEG C, obtain mix asphalt；
Step 3, in parts by weight, takes 0.5 part of 20 parts of ethanol water, 1 part of dioctyl phthalate and polyisobutene
It is added in step 2 gained mix asphalt, is heated to 80 DEG C, stir 30min, then heat to 110 DEG C, adds regenerative agent, after
Continuous stirring 5min, obtains regeneration asphalt.
Wherein, pretreatment is will to obtain particle diameter after crushing, sieving, dry after bituminous paving RAP material recoveries in step 1
It is the particle of below 10mm；The plasticiser is dioctyl phthalate；The light oil is furfural oil；The ethanol is water-soluble
The mass concentration of liquid is 70%；The regenerative agent is by 0.5 part of sodium dihydrogen phosphate in parts by weight, 0.1 part of dicyclohexyl amine, slides
3 parts of mixtures of composition of 1 part of stone flour, 1 part of tetramethylene dimethacrylate and furfural oil.
Embodiment 2
A kind of preparation method of warm mix regeneration asphalt, comprises the following steps：
Step 1, pre-processes after bituminous paving RAP materials are reclaimed, and obtains compound；
Step 2, in parts by weight, takes 64 parts of step 1 gained compound, 1.3 parts of plasticiser, 7 parts of glycerine, bentonite 3
13 parts of part, 1.7 parts of Hydroxypropyl methylcellulose and light oil stir mixing 40min under the conditions of 50 DEG C, obtain mix asphalt；
Step 3, in parts by weight, takes 23 parts of ethanol water, 1.5 parts of dioctyl phthalate and polyisobutene 1.3
Part is added in step 2 gained mix asphalt, is heated to 85 DEG C, stirs 27min, then heats to 115 DEG C, adds regenerative agent,
Continue to stir 5min, obtain regeneration asphalt.
Wherein, pretreatment is will to obtain particle diameter after crushing, sieving, dry after bituminous paving RAP material recoveries in step 1
It is the particle of below 10mm；The plasticiser is dioctyl phthalate；The light oil is furfural oil；The ethanol is water-soluble
The mass concentration of liquid is 75%；The regenerative agent is by 0.9 part of sodium dihydrogen phosphate in parts by weight, 0.2 part of dicyclohexyl amine, slides
5 parts of mixtures of composition of 1.8 parts of stone flour, 1.4 parts of tetramethylene dimethacrylate and furfural oil.
Embodiment 3
A kind of preparation method of warm mix regeneration asphalt, comprises the following steps：
Step 1, pre-processes after bituminous paving RAP materials are reclaimed, and obtains compound；
Step 2, in parts by weight, takes 72 parts of step 1 gained compound, 1.5 parts of plasticiser, 7 parts of glycerine, bentonite
18 parts of 3.4 parts, 2.3 parts of Hydroxypropyl methylcellulose and light oil stir mixing 40min under the conditions of 50 DEG C, obtain mix asphalt；
Step 3, in parts by weight, takes 27 parts of ethanol water, 1.7 parts of dioctyl phthalate and polyisobutene 1.4
Part is added in step 2 gained mix asphalt, is heated to 85 DEG C, stirs 25min, then heats to 110 DEG C, adds regenerative agent,
Continue to stir 5min, obtain regeneration asphalt.
Wherein, pretreatment is will to obtain particle diameter after crushing, sieving, dry after bituminous paving RAP material recoveries in step 1
It is the particle of below 10mm；The plasticiser is dioctyl phthalate；The light oil is furfural oil；The ethanol is water-soluble
The mass concentration of liquid is 75%；The regenerative agent is by 0.5 part of sodium dihydrogen phosphate in parts by weight, 0.1 part of dicyclohexyl amine, slides
3 parts of mixtures of composition of 1 part of stone flour, 1 part of tetramethylene dimethacrylate and furfural oil.
Embodiment 4
A kind of preparation method of warm mix regeneration asphalt, comprises the following steps：
Step 1, pre-processes after bituminous paving RAP materials are reclaimed, and obtains compound；
Step 2, in parts by weight, takes 80 parts of step 1 gained compound, 2 parts of plasticiser, 10 parts of glycerine, bentonite 4
20 parts of part, 3 parts of Hydroxypropyl methylcellulose and light oil stir mixing 30min under the conditions of 60 DEG C, obtain mix asphalt；
Step 3, in parts by weight, takes 2 parts of 30 parts of ethanol water, 2 parts of dioctyl phthalate and polyisobutene and adds
Enter in step 2 gained mix asphalt, be heated to 90 DEG C, stir 20min, then heat to 120 DEG C, add regenerative agent, continue
Stirring 10min, obtains regeneration asphalt.
Wherein, pretreatment is will to obtain particle diameter after crushing, sieving, dry after bituminous paving RAP material recoveries in step 1
It is the particle of below 10mm；The plasticiser is dioctyl phthalate；The light oil is furfural oil；The ethanol is water-soluble
The mass concentration of liquid is 80%；The regenerative agent is by 2 parts of sodium dihydrogen phosphate in parts by weight, 0.3 part of dicyclohexyl amine, talcum
6 parts of mixtures of composition of 3 parts of powder, 3 parts of tetramethylene dimethacrylate and furfural oil.
Comparative example 1
The present embodiment is with the difference of embodiment 3：Glycerine is not added.
A kind of preparation method of warm mix regeneration asphalt, comprises the following steps：
Step 1, pre-processes after bituminous paving RAP materials are reclaimed, and obtains compound；
Step 2, in parts by weight, takes 72 parts of step 1 gained compound, 1.5 parts of plasticiser, 3.4 parts of bentonite, hydroxypropyl first
18 parts of 2.3 parts of cellulose and light oil stir mixing 40min under the conditions of 50 DEG C, obtain mix asphalt；
Step 3, in parts by weight, takes 27 parts of ethanol water, 1.7 parts of dioctyl phthalate and polyisobutene 1.4
Part is added in step 2 gained mix asphalt, is heated to 85 DEG C, stirs 25min, then heats to 110 DEG C, adds regenerative agent,
Continue to stir 5min, obtain regeneration asphalt.
Wherein, pretreatment is will to obtain particle diameter after crushing, sieving, dry after bituminous paving RAP material recoveries in step 1
It is the particle of below 10mm；The plasticiser is dioctyl phthalate；The light oil is furfural oil；The ethanol is water-soluble
The mass concentration of liquid is 75%；The regenerative agent is by 0.5 part of sodium dihydrogen phosphate in parts by weight, 0.1 part of dicyclohexyl amine, slides
3 parts of mixtures of composition of 1 part of stone flour, 1 part of tetramethylene dimethacrylate and furfural oil.
Comparative example 2
The present embodiment is with the difference of embodiment 3：Do not include sodium dihydrogen phosphate in regenerative agent.
A kind of preparation method of warm mix regeneration asphalt, comprises the following steps：
Step 1, pre-processes after bituminous paving RAP materials are reclaimed, and obtains compound；
Step 2, in parts by weight, takes 72 parts of step 1 gained compound, 1.5 parts of plasticiser, 7 parts of glycerine, bentonite
18 parts of 3.4 parts, 2.3 parts of Hydroxypropyl methylcellulose and light oil stir mixing 40min under the conditions of 50 DEG C, obtain mix asphalt；
Step 3, in parts by weight, takes 27 parts of ethanol water, 1.7 parts of dioctyl phthalate and polyisobutene 1.4
Part is added in step 2 gained mix asphalt, is heated to 85 DEG C, stirs 25min, then heats to 110 DEG C, adds regenerative agent,
Continue to stir 5min, obtain regeneration asphalt.
Wherein, pretreatment is will to obtain particle diameter after crushing, sieving, dry after bituminous paving RAP material recoveries in step 1
It is the particle of below 10mm；The plasticiser is dioctyl phthalate；The light oil is furfural oil；The ethanol is water-soluble
The mass concentration of liquid is 75%；The regenerative agent is by 0.1 part of dicyclohexyl amine in parts by weight, 1 part of talcum powder, dimethyl propylene
3 parts of mixtures of composition of 1 part of olefin(e) acid butanediol ester and furfural oil.
Above-described embodiment gained regeneration asphalt is carried out into performance test, needle penetration, softening point, ductility and dynamic viscosity are pressed
Tested according to JTJ052-2000 national regulations.Result is as follows：
As seen from the above table, regeneration asphalt needle penetration of the invention 47-52/0.1mm, ductility 102.34-118.73cm,
Softening point, in 329-361mPas, meets road specified in JTG F40-2004 in 49.5-51.4 DEG C, 135 DEG C of dynamic viscosities
Bitumen technology index request.In comparative example 1, due to not adding glycerine, cause the raising of gained Asphalt Penetration, ductility to decline,
Viscosity increases, and this is probably because the fluid state of compound is deteriorated so that hydraulic performance decline after asphalt-regenerating；In comparative example 2, by
Sodium dihydrogen phosphate is not added in regenerative agent, causes the decline of gained Asphalt Penetration, ductility decline, viscosity to increase, this is probably
Because asphalt-regenerating is not exclusively, gained asphalt performance declines.
Claims (6)
1. a kind of preparation method of warm mix regeneration asphalt, it is characterised in that：Comprise the following steps：
Step 1, pre-processes after bituminous paving RAP materials are reclaimed, and obtains compound；
Step 2, in parts by weight, takes 60-80 parts of step 1 gained compound, plasticiser 0.8-2 parts, glycerine 5-10 parts, swelling
Native 2-4 parts, Hydroxypropyl methylcellulose 1-3 parts and the light oil 10-20 parts of stirring mixing 30-40min under the conditions of 50-60 DEG C, obtain
Mix asphalt；
Step 3, in parts by weight, takes ethanol water 20-30 parts, dioctyl phthalate 1-2 parts and polyisobutene 0.5-2
Part it is added in step 2 gained mix asphalt, is heated to 80-90 DEG C, stir 20-30min, then heats to 110-120 DEG C, plus
Enter regenerative agent, continue to stir 5-10min, obtain regeneration asphalt.
2. the preparation method of warm mix regeneration asphalt according to claim 1, it is characterised in that：In step 1 pretreatment be by
The particle that particle diameter is below 10mm is obtained after bituminous paving RAP material recoveries after crushing, sieving, dry.
3. the preparation method of warm mix regeneration asphalt according to claim 1, it is characterised in that：The plasticiser is adjacent benzene two
Formic acid dioctyl ester.
4. the preparation method of warm mix regeneration asphalt according to claim 1, it is characterised in that：The light oil is furfural
Oil.
5. the preparation method of warm mix regeneration asphalt according to claim 1, it is characterised in that：The matter of the ethanol water
Amount concentration is 70-80%.
6. the preparation method of warm mix regeneration asphalt according to claim 1, it is characterised in that：The regenerative agent is by with weight
Sodium dihydrogen phosphate 0.5-2 parts, dicyclohexyl amine 0.1-0.3 parts, talcum powder 1-3 parts, tetramethylene dimethacrylate of amount part meter
1-3 parts and 3-6 parts of mixture of composition of furfural oil.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710253551.2A CN106883629A (en) | 2017-04-18 | 2017-04-18 | A kind of preparation method of warm mix regeneration asphalt |
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| CN201710253551.2A CN106883629A (en) | 2017-04-18 | 2017-04-18 | A kind of preparation method of warm mix regeneration asphalt |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101113243A (en) * | 2007-04-29 | 2008-01-30 | 崔岩 | Method for manufacturing new asphalt pavement material by using old asphalt pavement material |
| CN103254652A (en) * | 2013-05-13 | 2013-08-21 | 同济大学 | Method for carrying out cold-recycling on waste asphalt mixture by taking aromatic oil as recycling agent |
| CN105255206A (en) * | 2015-11-27 | 2016-01-20 | 长安大学 | Warm-mixed recycled asphalt and preparation method thereof |
| CN105293996A (en) * | 2015-11-27 | 2016-02-03 | 长安大学 | Warm-mixing recycled asphalt mixture preparation method |
-
2017
- 2017-04-18 CN CN201710253551.2A patent/CN106883629A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101113243A (en) * | 2007-04-29 | 2008-01-30 | 崔岩 | Method for manufacturing new asphalt pavement material by using old asphalt pavement material |
| CN103254652A (en) * | 2013-05-13 | 2013-08-21 | 同济大学 | Method for carrying out cold-recycling on waste asphalt mixture by taking aromatic oil as recycling agent |
| CN105255206A (en) * | 2015-11-27 | 2016-01-20 | 长安大学 | Warm-mixed recycled asphalt and preparation method thereof |
| CN105293996A (en) * | 2015-11-27 | 2016-02-03 | 长安大学 | Warm-mixing recycled asphalt mixture preparation method |
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Application publication date: 20170623 |