CN109987882A - A kind of RAP regenerates production method entirely - Google Patents
A kind of RAP regenerates production method entirely Download PDFInfo
- Publication number
- CN109987882A CN109987882A CN201910318514.4A CN201910318514A CN109987882A CN 109987882 A CN109987882 A CN 109987882A CN 201910318514 A CN201910318514 A CN 201910318514A CN 109987882 A CN109987882 A CN 109987882A
- Authority
- CN
- China
- Prior art keywords
- old material
- fine
- coarse
- rap
- production method
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
-
- 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
Abstract
A kind of RAP of disclosure of the invention regenerates production method entirely, and one, RAP is broken, grinding, screening obtain three kinds of ultra-fine old material, fine old material and coarse old material specifications；Two, using regeneration drying drum, asphalt softening point following temperature is heated to ultra-fine old material and the drying of fine old material respectively；Three, coarse old material and entrance primary drying drum drying together of newly gathering materials are heated to 200 DEG C or more；Four, by ultra-fine old material, fine old material, coarse old material and newly gather materials mixture, regenerative agent, heated bitumen, miberal powder investment asphalt stirring host be stirred, obtain heat regeneration asphalt mixture.It regenerates drying drum temperature and is lower than asphalt softening point temperature, the problems such as overcoming ageing of asphalt, isolation, adherency, coarse old material is entrained in newly to gather materials serves as use of newly gathering materials in the middle, 200 DEG C or more are heated to by the drying of primary drying drum, gradation can be controlled accurately, guarantee the accuracy of full reclaimed asphalt mixture gradation.
Description
Technical field
The present invention relates to technical field of road engineering materials, it is specifically related to a kind of RAP and regenerates production method entirely.
Background technique
Bituminous pavement is the main paving mode of road, and the whole world can all generate the (letter of a large amount of waste asphalt mixture every year
Claim RAP).
Currently, from the point of view of the construction situation of highway in China having started that asphalt concrete pavement structure form is widely used.It presses
According to the existing situation in road surface, maintenance need to be carried out there are about 20% bituminous pavement every year and is reprocessed, along with the generation of a large amount of RAP.And it is normal
The production method for advising hot recycling mixing material manufacturing technique is " based on newly gathering materials, supplemented by RAP " that the prior art is made profits again to RAP's
It is very low with rate, 20%~50% can only be added to, form sharp contrast with this, RAP occur in most cities, and pile up like a mountain,
Cheap situation.
Restrict the factor that the development of RAP regeneration techniques has following two key:
(1) gradation problem, largely uses RAP, and asphalt mixture gradation is difficult to control.The prior art generally divides RAP
Two kinds of specification aggregates.It regenerates in drying drum drying course, two aggregates mix use again.If large scale adds,
Gradation is inaccurate, can seriously affect quality of asphalt mixtures；
(2) heating problems, RAP are generally dried and are heated to 100~140 DEG C.It is easy to produce ageing of asphalt, pitch isolation, drip
A large amount of problems such as green adherency, glance coal.Regeneration drum blade, regeneration chute, regeneration fan blade are all easily adhered pitch, cause
Equipment fault.
Summary of the invention
Invention provides a kind of RAP and regenerates production method entirely, and which overcome the deficiencies present in background technique.Invention solves
Technical solution used by its technical problem is:
A kind of RAP regenerates production method entirely, includes the following steps:
One, RAP is broken, grinding, screening, obtain the ultra-fine old material of 0~3mm, the fine old material of 3~6mm and >=6mm
Three kinds of specifications of coarse old material；
Two, using regeneration drying drum, asphalt softening point or less is heated to ultra-fine old material and the drying of fine old material respectively
Temperature；
Three, coarse old material and entrance primary drying drum drying together of newly gathering materials are heated to 200 DEG C or more；
Four, by ultra-fine old material, fine old material, coarse old material and newly gather materials mixture, regenerative agent, heated bitumen, miberal powder throw
Enter asphalt stirring host to be stirred, obtains heat regeneration asphalt mixture.
Among one preferred embodiment: heat regeneration asphalt mixture is 140~160 DEG C of heat regeneration asphalt mixtures.
Among one preferred embodiment: in step 4, ultra-fine old material and fine old material are to realize that drying is changed by stirring
Heat.
Among one preferred embodiment: the bitumen content > 6% of ultra-fine old material and fine old material；The bitumen content of coarse old material
< 1%.
Among one preferred embodiment: removing ultra-fine old material, fine old material and coarse old material by way of broken, grinding
Asphalt component.
Among one preferred embodiment: coarse old material is gathered materials with new by the primary drying drum progress of cold burden storehouse gradation requirement investment
Drying heating.
Among one preferred embodiment: being promoted after coarse old material and drying heating of newly gathering materials and sieved, stored to main building.
Among one preferred embodiment: coarse old material with newly gather materials and mix, sieved by specification of newly gathering materials.
Among one preferred embodiment: regeneration drying drum is dusted by the dust pelletizing system of primary drying drum.
Among one preferred embodiment: asphalt softening point following temperature is≤80 degree.
The technical program compared with the background art, it has the following advantages:
1.RAP is broken, grind, the old material of three kinds of specifications is obtained after screening, and regeneration drying drum is to thin old material and finely
It is the problems such as old material drying, regeneration drying drum temperature is lower than asphalt softening point temperature, overcomes ageing of asphalt, isolation, adherency, coarse
Old material is entrained in newly to gather materials serves as use of newly gathering materials in the middle, is heated to 200 DEG C or more by the drying of primary drying drum, is subsequent
Stirring heat exchange provides heat and ensures, gradation can be controlled accurately, guarantee the accuracy of full reclaimed asphalt mixture gradation, accomplish RAP
Based on, newly gather materials supplemented by full regenerating mixture production method.
2. the asphalt component of ultra-fine old material, fine old material and coarse old material is removed being crushed, by way of grinding, in room temperature
Lower progress pitch removing, accurately controls the bitumen content of the old material of different size.
Detailed description of the invention
Invention is described further with reference to the accompanying drawings and examples.
Fig. 1 depicts process flow chart of the invention.
Specific embodiment
Please refer to Fig. 1, a kind of RAP regenerates production method entirely, includes the following steps:
One, RAP is broken, grinding, screening, obtain the ultra-fine old material of 0~3mm, the fine old material of 3~6mm and >=6mm
Three kinds of specifications of coarse old material；
Two, using regeneration drying drum, asphalt softening point or less is heated to ultra-fine old material and the drying of fine old material respectively
Temperature；
Three, coarse old material and entrance primary drying drum drying together of newly gathering materials are heated to 200 DEG C or more；
Four, by ultra-fine old material, fine old material, coarse old material and newly gather materials mixture, regenerative agent, heated bitumen, miberal powder throw
Enter asphalt stirring host to be stirred, obtains heat regeneration asphalt mixture.
Preferably, heat regeneration asphalt mixture is 140~160 DEG C of heat regeneration asphalt mixtures.It is ultra-fine in step 4
Old material and fine old material are by stirring the dry heat exchange of realization, and 200 DEG C or more coarse old materials are gathered materials with ultra-fine old material, finely with new
Old material heat is comprehensive.
Preferably, the bitumen content > 6% of ultra-fine old material and fine old material；The bitumen content < 1% of coarse old material.And
It and is the asphalt component that ultra-fine old material, fine old material and coarse old material are removed being crushed, by way of grinding.Coarse old material
Bitumen content is low, direct plunges into newly gathering materials, and mixes with newly gathering materials, and serves as use of newly gathering materials.In particular, coarse old
Expect and newly gather materials to carry out drying heating by the primary drying drum of cold burden storehouse gradation requirement investment, increase operation rate.Cold burden storehouse gradation
It is required that being determined by the performance parameter in cold burden storehouse oneself.
Preferably, coarse old material and drying of newly gathering materials are promoted after heating and are sieved, stored to main building.Also, it is coarse old
Material with newly gather materials and mix, sieved by new specification of gathering materials.
Preferably, regeneration drying drum is dusted by the dust pelletizing system of primary drying drum.Due to the dry rolling of regeneration
Cylinder heating temperature is low, and tail gas dirt cigarette ingredient is few, can simplify the dust pelletizing system of production equipment in this way.
Preferably, asphalt softening point following temperature is≤80 degree.
Since traditional technique sieves RAP, but directly gather materials by RAP and newly according to scheduled gradation
It is required that blending stirring, therefore, Gradation Control and inaccurate are carried out with regenerative agent, heated bitumen, miberal powder, with the requirement of scheduled gradation
Deviation is big, and quality of asphalt mixtures is poor.
The present invention is sieved to RAP first, is divided into three kinds of ultra-fine old material, fine old material, coarse old material specifications, coarse
Old material due to bitumen content it is low with newly gather materials and mix uses, 6mm old material below is subdivided into ultra-fine old material, finely old
Therefore two kinds of material can strictly executive level can control with requirement, quality of asphalt mixtures in process of production.Moreover, super
Thin old material, the heating temperature of fine old material are low, effectively prevent aging, isolation, further improve product quality.
The full regenerating mixture production method of the present invention " based on RAP, newly gather materials supplemented by ", with it is traditional " based on newly gathering materials,
Supplemented by RAP " production method it is exactly the opposite.Ultra-fine old material and fine old material are used as old material together, and coarse old material is as new
Use, ultra-fine old material and the fine old material of gathering materials are as old material amount, coarse old material and newly gather materials as new doses, with regenerative agent, heat
The amount ratio of pitch, miberal powder can be determined according to traditional proportion of production.
Claims (10)
1. a kind of RAP regenerates production method entirely, which comprises the steps of:
One, RAP is broken, grinding, screening, obtain the coarse of the ultra-fine old material of 0~3mm, the fine old material of 3~6mm and >=6mm
Three kinds of specifications of old material；
Two, using regeneration drying drum, asphalt softening point following temperature is heated to ultra-fine old material and the drying of fine old material respectively；
Three, coarse old material and entrance primary drying drum drying together of newly gathering materials are heated to 200 DEG C or more；
Four, by ultra-fine old material, fine old material, coarse old material and newly gather materials mixture, regenerative agent, heated bitumen, miberal powder investment drip
Green mixture stirring host is stirred, and obtains heat regeneration asphalt mixture.
2. RAP according to claim 1 regenerates production method entirely, it is characterised in that: heat regeneration asphalt mixture is 140~
160 DEG C of heat regeneration asphalt mixtures.
3. RAP according to claim 2 regenerates production method entirely, it is characterised in that: in step 4, ultra-fine old material and
Fine old material is that dry heat exchange is realized by stirring.
4. RAP according to claim 1 or 2 or 3 regenerates production method entirely, it is characterised in that: ultra-fine old material and fine old
The bitumen content > 6% of material；The bitumen content < 1% of coarse old material.
5. RAP according to claim 4 regenerates production method entirely, it is characterised in that: removed by way of broken, grinding
The asphalt component of ultra-fine old material, fine old material and coarse old material.
6. RAP according to claim 1 regenerates production method entirely, it is characterised in that: coarse old material and newly gather materials by cold burden
Storehouse gradation requires the primary drying drum of investment to carry out drying heating.
7. RAP according to claim 6 regenerates production method entirely, it is characterised in that: coarse old material and drying of newly gathering materials add
It is promoted after heat and is sieved, stored to main building.
8. RAP according to claim 1 regenerates production method entirely, it is characterised in that: coarse old material and newly gather materials and be mixed in one
It rises, is sieved by specification of newly gathering materials.
9. RAP according to claim 4 regenerates production method entirely, it is characterised in that: regeneration drying drum passes through primary dry
The dust pelletizing system of dry roller is dusted.
10. RAP according to claim 1 regenerates production method entirely, it is characterised in that: asphalt softening point following temperature is≤
80 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910318514.4A CN109987882A (en) | 2019-04-19 | 2019-04-19 | A kind of RAP regenerates production method entirely |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910318514.4A CN109987882A (en) | 2019-04-19 | 2019-04-19 | A kind of RAP regenerates production method entirely |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109987882A true CN109987882A (en) | 2019-07-09 |
Family
ID=67134141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910318514.4A Pending CN109987882A (en) | 2019-04-19 | 2019-04-19 | A kind of RAP regenerates production method entirely |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109987882A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110670448A (en) * | 2019-09-20 | 2020-01-10 | 福建铁拓机械有限公司 | Production process and equipment of recycled asphalt mixture |
| CN114573272A (en) * | 2022-01-26 | 2022-06-03 | 山东省路桥集团有限公司 | Regeneration method for microwave heating activation of old asphalt mixture |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3044547B1 (en) * | 1999-06-04 | 2000-05-22 | 株式会社エフイ石灰工業所 | Reheated large particle size asphalt mixture, method for producing the same, and method for constructing pavement using the same |
| CN102260058A (en) * | 2011-05-25 | 2011-11-30 | 吉林省公路机械有限公司 | Production process of asphalt pavement material based on thermal regeneration of used asphalt pavement materials |
| CN104119032A (en) * | 2014-07-03 | 2014-10-29 | 同济大学 | A regenerating method of an SBS asphalt mixture with a high RAP mixing amount |
| CN105601176A (en) * | 2015-12-21 | 2016-05-25 | 安徽省交通规划设计研究总院股份有限公司 | Production method of plant-mixed hot recycled asphalt concrete |
| CN105801011A (en) * | 2016-04-05 | 2016-07-27 | 武汉理工大学 | Hot-recycling asphalt mixture containing non-traditional oil and preparation method of hot-recycling asphalt mixture |
| CN107056139A (en) * | 2017-04-07 | 2017-08-18 | 海盐富安建设科技发展有限公司 | A kind of energy-conserving and environment-protective asphalt and its preparation technology |
| CN108547200A (en) * | 2018-06-07 | 2018-09-18 | 福建南方路面机械有限公司 | Bituminous paving materials recycling system and regeneration method |
-
2019
- 2019-04-19 CN CN201910318514.4A patent/CN109987882A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3044547B1 (en) * | 1999-06-04 | 2000-05-22 | 株式会社エフイ石灰工業所 | Reheated large particle size asphalt mixture, method for producing the same, and method for constructing pavement using the same |
| CN102260058A (en) * | 2011-05-25 | 2011-11-30 | 吉林省公路机械有限公司 | Production process of asphalt pavement material based on thermal regeneration of used asphalt pavement materials |
| CN104119032A (en) * | 2014-07-03 | 2014-10-29 | 同济大学 | A regenerating method of an SBS asphalt mixture with a high RAP mixing amount |
| CN105601176A (en) * | 2015-12-21 | 2016-05-25 | 安徽省交通规划设计研究总院股份有限公司 | Production method of plant-mixed hot recycled asphalt concrete |
| CN105801011A (en) * | 2016-04-05 | 2016-07-27 | 武汉理工大学 | Hot-recycling asphalt mixture containing non-traditional oil and preparation method of hot-recycling asphalt mixture |
| CN107056139A (en) * | 2017-04-07 | 2017-08-18 | 海盐富安建设科技发展有限公司 | A kind of energy-conserving and environment-protective asphalt and its preparation technology |
| CN108547200A (en) * | 2018-06-07 | 2018-09-18 | 福建南方路面机械有限公司 | Bituminous paving materials recycling system and regeneration method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110670448A (en) * | 2019-09-20 | 2020-01-10 | 福建铁拓机械有限公司 | Production process and equipment of recycled asphalt mixture |
| CN114573272A (en) * | 2022-01-26 | 2022-06-03 | 山东省路桥集团有限公司 | Regeneration method for microwave heating activation of old asphalt mixture |
| CN114573272B (en) * | 2022-01-26 | 2023-03-14 | 山东省路桥集团有限公司 | Regeneration method for microwave heating activation of old asphalt mixture |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104164817B (en) | A kind of method for designing of the heat regeneration asphalt mixture of high RAP ratio | |
| CN102677567B (en) | Asphalt pavement structure regenerated from concrete pavement and construction method of asphalt pavement structure | |
| CN102531471A (en) | Emulsified asphalt, mixed material containing same and road surface formed by mixed material | |
| CN104034866A (en) | Method for evaluating performance of cool-mixed and cool-spread modified emulsified asphalt mixture | |
| CN102292395B (en) | Method for rejuvenating a bitumen containing composition | |
| CN106906719A (en) | A kind of production technology of hot in-plant reclaimed asphalt paving mix | |
| CN102863182B (en) | Ultrathin rubber asphalt wearing layer mixing material for preventive conservation | |
| CN109293280A (en) | A kind of bituminous concrete and its preparation process | |
| CN105837090A (en) | High-addition-amount plant-mixed warm regenerated asphalt mixture and preparation method thereof | |
| CN104446155B (en) | Papermaking wastewater is utilized to prepare cold mixing cold laid asphaltic compound and construction method | |
| CN108536956A (en) | A kind of mixing proportion design method that building waste is used for asphalt | |
| CN105801011B (en) | A kind of non-traditional grease heat regeneration asphalt mixture and preparation method thereof | |
| CN109987882A (en) | A kind of RAP regenerates production method entirely | |
| CN104594151B (en) | Water drainage anti-cracking type cold-recycling pavement structure | |
| CN106596610A (en) | Test method for determining new and old asphalt dissolution index of hot recycled asphalt mixture | |
| CN107386037A (en) | A kind of compaction technology based on asphalt compactingproperties | |
| CN108411738B (en) | Plant-mixed hot recycling method capable of realizing RAP full recycling | |
| CN106758654A (en) | A kind of regenerative pavement structure and its technique of building the road | |
| CN109534723A (en) | A kind of preparation method of warm-mixed recycled asphalt mixture | |
| CN105601175B (en) | A kind of High Modulus Asphalt Mixture and preparation method thereof | |
| CN105777010B (en) | A kind of rubber wire stone mastic asphalt and preparation method thereof | |
| CN108996932B (en) | Plant-mixed hot recycling grading design method for asphalt pavement reclaimed materials | |
| CN104233918B (en) | Large-grain-diameter rubber block-modified asphalt mastic and gravel sealing layer and preparation method thereof | |
| CN111499273A (en) | Preparation method of hot recycled asphalt mixture | |
| CN202809430U (en) | Asphalt pavement structure regenerated by cement pavement |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 362000 Fujian province Quanzhou Fengze District High-tech Industrial Park Sports Street No. 700 Applicant after: Fujian Nanfang pavement machinery Co.,Ltd. Address before: 362000 Fujian province Quanzhou Fengze District High-tech Industrial Park Sports Street No. 700 Applicant before: FUJIAN SOUTH HIGHWAY MACHINERY Co.,Ltd. |
|
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190709 |