CN102121224A - Integrated technology of cold and hot composite regeneration process - Google Patents
Integrated technology of cold and hot composite regeneration process Download PDFInfo
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- CN102121224A CN102121224A CN2010101411173A CN201010141117A CN102121224A CN 102121224 A CN102121224 A CN 102121224A CN 2010101411173 A CN2010101411173 A CN 2010101411173A CN 201010141117 A CN201010141117 A CN 201010141117A CN 102121224 A CN102121224 A CN 102121224A
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Abstract
The invention discloses a process, a method and a core material formula, wherein the process and the method comprise the regeneration of old materials in the proportion of 30-100% in the large and medium maintenance and maintenance construction of constructed asphalt roads. The process and the method comprise the following parts: firstly, a novel milling device; secondly, a collecting device of an old milling material; thirdly, a heating and scattering device of a milling material; fourthly, a cold-laid re-generation blending device; and fifthly, a cold and hot composite regeneration and blending process. The invention has the following innovation points: the process and the method are used for the maximum regeneration of the original material of the old asphalt pavement in the overhaul engineering of various types of road asphalt pavements, and the maximum regeneration basically reaches 100%. The technology provided by the invention is the innovation of resource regeneration utilization, circular economy, energy conservation and emission reduction of road construction.
Description
Technical field
The present invention relates to a kind of cold and hot composite regenerated technology and method and material prescription.Cold and hot composite regenerated technology integrated technique belongs to the complex technique in machinery and macromolecule chemical industry field.Application is a traffic highway road surface construction field, the special-purpose new technology new method of highway, speedway, town road pavement maintenance, construction.In highway construction, mainly be the problem that reclamation of old material utilizes in the speedway overhaul.At aspects such as plant equipment, technology, method, materials, the heat-obtaining regeneration and the cold regeneration chief organically combine the advantage that cold regeneration and heat are regenerated, and maximally utilise old material and finish the highway major maintenance engineering.Reduce construction temperature, improve the utilization rate of old material.The resources circulation regeneration, energy-conserving and environment-protective.Be innovative technology, the innovative technology of speedway highway construction field overhaul engineering.
Technical background
Because the highway in China construction entered medium-capital overhauling and curing period, the resource that repair at the highway medium-capital overhauling, how curing time makes full use of former road surface is not only the waste and old resource regeneration on former road surface, also is environmental issue.The China and even the world mainly contain two kinds of methods in the old asphalt pavement regeneration material uses at present, and a kind of method is to adopt hot regeneration technology.This is because the aged asphalt in the old material need recover the function of pitch, needs to add to replenish new pitch, therefore adopts hot renovation process construction usually, however hot regeneration technology complexity, general old material can only have 30% to obtain regeneration, and 70% old material is wasted.Another method is cold regeneration, cold regeneration technology comes down to old material is used for sub-surface and surface layer, plays raising hardness and plays anti-rut effect, because its grating to former road surface is destroyed, lose substantially with physical index on the road, can not be used for surface layer and high grade pavement and use.Cold regeneration is mainly used in below the one-level road, and the regeneration problem that has adopted the express highway pavement of modified bitumen is that simple cold regeneration and hot regeneration technology all can not solve separately.Therefore, the problem that speedway overhaul reclamation of old material utilizes just needs the advantage in conjunction with heat regeneration and cold regeneration, solve this difficult problem, starts out a kind of cold and hot composite regenerated technology and method.
Summary of the invention
The object of the invention is open about cold and hot composite regenerated a kind of technology and method, and the technical indicator of the normal temperature modified asphaltic products of cold regeneration.Its technology and method are with the technology and the method for old asphalt mixture 30-100% ratio regeneration in the highway major maintenance engineering.And normal temperature modified pitch technology of the cold regeneration of the core product that is used for cold and hot composite regenerated technology and prescription.The common core that constitutes cold and hot composite regenerated technology of the normal temperature modified pitch three of technology of the present invention, method and cold regeneration.
The present invention is cold and hot composite regenerated technology of the old material of a kind of pavement asphalt concrete and method, and the prescription of core material and technical indicator.Be used for the overhaul engineering construction of blue or green rigid pavement, technology and method that reclamation of old material utilizes.The common core that constitutes cold and hot composite regenerated technology of the normal temperature modified pitch three of technology of the present invention, method and cold regeneration.It is characterized in that:
One, technology of the present invention and method have with the lower part and constitute:
3, milling building service design and transformation.Milling equipment has;
3.1 the milling function, the former second wife of compound under guaranteeing to dig keeps substantially, and milling itself can not produce broken material.
Set the adjustment function 3.2 have the milling degree of depth
3.3 have automatic walking function.
4, milling material collecting device type selecting
4.1 milling material collecting device has the function of automatic collection milling material, to the big small particle diameter letter capping broad of milling material.
4.2 the milling material of collecting is had outer unloading functions automatically.
4.3 have automatic walking function.
3, reworked material heating dispersing apparatus
3.1 on the basis of mixing machine for asphalt mixture, carry out the design of milling material heating dispersing apparatus, this equipment has grating cold burden storehouse, heating disperses to mix its relevant parts of cylinder, also has the discharging Load System of mixing cylinder material heating system, reworked material and virgin material feeding system, disperseing mix to finish simultaneously.
3.2 have the operating mode automatic control system.
3.3 having process temperature shows and control system.
4, cold regeneration mix equipment
4.1 have feed bin, emulsification cold recycled asphalt feed bin, sump, cement bin, pitch restorative feed bin.
4.2 have the batching automatic gauge, show and control automatically.
4.3 have automatical feeding system.
5, cold and hot composite regenerated material mix technology
5.1 determine regenerating mixture ratio, emulsification cold recycled asphalt material ratio, water ratio, cement proportion, pitch restorative ratio.
Cast out condition 5.2 determine the pitch restorative, building 5 years, can reduce the tret of emulsification cold recycled asphalt in right amount in principle, make that original pitch plays a role in the compound with the road surface of interior overhaul pitch restorative.
6, flexible pavement reclamation of old material utilization rate is 30-100%.
7, emulsification cold recycled asphalt production technology:
Earlier with heavy traffic paving asphalt AH-70# or AH-90#:65-85% metering, enter pitch heating reactor, then a certain amount of pitch is heated to 130-170 ℃, pitch with heating pumps in the high speed shear reactor again, simultaneously again with fourth Ethenylbenzene diene latex SBS:4-5% and styrene-butadiene latex SBR:3-5%; By necessarily adding in the high speed shear reactor, shear after 10-40 minute, again with emulsifier: 3-7% than row; Dispersing agent: 1-3%; Water 20-30%; The priority order of pressing emulsifier, dispersing agent, water etc. drops in the high speed shear reactor, reprocesses 10-60 minute, and the polymerization temperature that adds man-hour remains on 130-170 ℃, and product is promptly produced and finished, and Product Status is the normal temperature liquid condition.
8, the normal temperature modified pitch of cold regeneration:
8.1 the prescription of the normal temperature modified pitch of cold regeneration: heavy traffic paving asphalt is the black thick liquid, and GB is AH-70# or AH-90#:60-85%; Fourth Ethenylbenzene diene latex SBS:4-5%; Be the milky thick liquid, wherein fourth Ethenylbenzene diene content is 65%; Styrene-butadiene latex SBR, 3-5% is the milky thick liquid, wherein butylbenzene content is 60%; Emulsifier: 3-7% is the black thick liquid, and wherein content of lignin is 40%, and it is 60% that soil temperature 60 and think of coil 80 compound content; Dispersing agent: 1-3% is faint yellow thick liquid, dodecyl sodium sulfate content 40%; Water is white clear liquid: 20-30%, and water hardness is less than 20 degree;
8.2 the normal temperature modified asphaltic products technical indicator of cold regeneration:
8.1.1 high-temperature behavior
The anti-rut of high temperature: 60 ℃, 0.7Mpa, dynamic stability is greater than 6000 times/mm..
Solid content:＞65%
Softening point:＞65 ℃
Softening point:＞65 ℃
Elasticity is recovered:＞80%
With suitable grating mix, 100 ℃ do not trickle not deliquescing.
8.1.2 cryogenic property
Low temperature-10 ℃ does not become fragile; The bending failure strain is not less than 5000 (μ ε).
Production technology
Description of drawings
Accompanying drawing is the cold and hot composite regenerated technology flow chart of the old material of bituminous concrete.
Claims (9)
- The present invention is cold and hot composite regenerated technology of the old material of a kind of pavement asphalt concrete and method, and the prescription of core material and technical indicator.Be used for the overhaul engineering construction of blue or green rigid pavement, technology and method that reclamation of old material utilizes.The common core that constitutes cold and hot composite regenerated technology of the normal temperature modified pitch three of technology of the present invention, method and cold regeneration.It is characterized in that technology of the present invention and method have following 9 parts to constitute:1. milling building service design and transformation.Milling equipment has;1.1 the milling function, the former second wife of compound under guaranteeing to dig keeps substantially, and milling itself can not produce broken material.Set the adjustment function 1.2 have the milling degree of depth1.3 have automatic walking function.
- 2. milling material collecting device type selecting2.1 milling material collecting device has the function of automatic collection milling material, to the big small particle diameter letter capping broad of milling material.2.2 the milling material of collecting is had outer unloading functions automatically.2.3 have automatic walking function.
- 3. reworked material heats dispersing apparatus3.1 on the basis of mixing machine for asphalt mixture, carry out the design of milling material heating dispersing apparatus, this equipment has grating cold burden storehouse, heating disperses to mix its relevant parts of cylinder, also has the discharging Load System of mixing cylinder material heating system, reworked material and virgin material feeding system, disperseing mix to finish simultaneously.3.2 have the operating mode automatic control system.3.3 having process temperature shows and control system.
- 4. cold regeneration mix equipment4.1 have feed bin, emulsification cold recycled asphalt feed bin, sump, cement bin, pitch restorative feed bin.4.2 have the batching automatic gauge, show and control automatically.4.3 have automatical feeding system.
- 5. cold and hot composite regenerated material mix technology5.1 determine regenerating mixture ratio, emulsification cold recycled asphalt material ratio, water ratio, cement proportion, pitch restorative ratio.Cast out condition 5.2 determine the pitch restorative, building 5 years, can reduce the tret of emulsification cold recycled asphalt in right amount in principle, make that original pitch plays a role in the compound with the road surface of interior overhaul pitch restorative.
- 6. flexible pavement reclamation of old material utilization rate is 30-100%.
- 7. emulsification cold recycled asphalt production technology:Earlier with heavy traffic paving asphalt AH-70# or AH-90#:65-85% metering, enter pitch heating reactor, then a certain amount of pitch is heated to 130-170 ℃, pitch with heating pumps in the high speed shear reactor again, simultaneously again with fourth Ethenylbenzene diene latex SBS:4-5% and styrene-butadiene latex SBR:3-5%; By necessarily adding in the high speed shear reactor, shear after 10-40 minute, again with emulsifier: 3-7% than row; Dispersing agent: 1-3%; Water 20-30%; The priority order of pressing emulsifier, dispersing agent, water etc. drops in the high speed shear reactor, reprocesses 10-60 minute, and the polymerization temperature that adds man-hour remains on 130-170 ℃, and product is promptly produced and finished, and Product Status is the normal temperature liquid condition.
- 8. the normal temperature modified pitch of cold regeneration:8.1 the prescription of the normal temperature modified pitch of cold regeneration: heavy traffic paving asphalt is the black thick liquid, and GB is AH-70# or AH-90#:60-85%; Fourth Ethenylbenzene diene latex SBS:4-5%; Be the milky thick liquid, wherein fourth Ethenylbenzene diene content is 65%; Styrene-butadiene latex SBR, 3-5% is the milky thick liquid, wherein butylbenzene content is 60%; Emulsifier: 3-7% is the black thick liquid, and wherein content of lignin is 40%, and it is 60% that soil temperature 60 and think of coil 80 compound content; Dispersing agent: 1-3% is faint yellow thick liquid, dodecyl sodium sulfate content 40%; Water is white clear liquid: 20-30%, and water hardness is less than 20 degree;8.2 the normal temperature modified asphaltic products technical indicator of cold regeneration:
8.1.1 high-temperature behaviorThe anti-rut of high temperature: 60 ℃, 0.7Mpa, dynamic stability is greater than 6000 times/mm..Solid content:＞65%Softening point:＞65 ℃Elasticity is recovered:＞80%With suitable grating mix, 100 ℃ do not trickle not deliquescing.8.1.2 cryogenic propertyLow temperature-10 ℃ does not become fragile; The bending failure strain is not less than 5000 (μ t). - 9. cold and hot composite regenerated process frame chart of the old material of pavement asphalt concrete.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101411173A CN102121224A (en) | 2010-04-08 | 2010-04-08 | Integrated technology of cold and hot composite regeneration process |
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| CN2010101411173A CN102121224A (en) | 2010-04-08 | 2010-04-08 | Integrated technology of cold and hot composite regeneration process |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103113047A (en) * | 2013-03-19 | 2013-05-22 | 陕西美通路面材料科技有限公司 | Technology for recycling recycled asphalt concrete |
| CN103554930A (en) * | 2013-10-17 | 2014-02-05 | 中国石油化工股份有限公司 | High-concentration SBR (styrene butadiene rubber) modified emulsified asphalt and preparation method thereof |
| CN109704651A (en) * | 2019-01-26 | 2019-05-03 | 上海宝新特种沥青混凝土有限公司 | A kind of asphalt and preparation method thereof |
-
2010
- 2010-04-08 CN CN2010101411173A patent/CN102121224A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103113047A (en) * | 2013-03-19 | 2013-05-22 | 陕西美通路面材料科技有限公司 | Technology for recycling recycled asphalt concrete |
| CN103554930A (en) * | 2013-10-17 | 2014-02-05 | 中国石油化工股份有限公司 | High-concentration SBR (styrene butadiene rubber) modified emulsified asphalt and preparation method thereof |
| CN103554930B (en) * | 2013-10-17 | 2016-10-19 | 中国石油化工股份有限公司 | A kind of high concentration SBR modified emulsifying asphalt and preparation method thereof |
| CN109704651A (en) * | 2019-01-26 | 2019-05-03 | 上海宝新特种沥青混凝土有限公司 | A kind of asphalt and preparation method thereof |
| CN109704651B (en) * | 2019-01-26 | 2021-04-27 | 上海宝新特种沥青混凝土有限公司 | Asphalt mixture and preparation method thereof |
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Application publication date: 20110713 |