CN106145777A - Warm-mixed recycled asphalt mixture and preparation method thereof - Google Patents
Warm-mixed recycled asphalt mixture and preparation method thereof Download PDFInfo
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- CN106145777A CN106145777A CN201610509114.8A CN201610509114A CN106145777A CN 106145777 A CN106145777 A CN 106145777A CN 201610509114 A CN201610509114 A CN 201610509114A CN 106145777 A CN106145777 A CN 106145777A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/26—Bituminous materials, e.g. tar, pitch
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
- E01C19/10—Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resins, i.e. producing mixtures or coating aggregates otherwise than by penetrating or surface dressing; Apparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
- E01C19/1004—Reconditioning or reprocessing bituminous mixtures, e.g. salvaged paving, fresh patching mixtures grown unserviceable; Recycling salvaged bituminous mixtures; Apparatus for the in-plant recycling thereof
-
- 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 present invention relates to a kind of warm-mixed recycled asphalt mixture and preparation method thereof.This preparation method comprises the steps: to obtain described old asphalt mixture；Obtain the content of Bituminous concrete surface in old asphalt mixture and performance indications and the old grating gathered materials；Content according to described Bituminous concrete surface and performance indications, and the target grating of the described old grating gathered materials and described warm-mixed recycled asphalt mixture, obtain the weight proportion of each raw material；By described outer mix newly to gather materials be heated to 190～210 DEG C of insulations；Described warm mix regeneration asphalt is heated to 160～170 DEG C of insulations；Described old asphalt mixture is added to the described warm mix regeneration asphalt of insulation, mix and stir；Described outer the mixing adding insulation is newly gathered materials and filler, mix.This preparation method, makes old asphalt mixture not preheat, directly adds at normal temperatures, greatly reduces the cost of scrap build, and the warm-mixed recycled asphalt mixture preparing disclosure satisfy that pavement performance, and preparation method is easily controllable.
Description
Technical field
The present invention relates to highway construction technical field, particularly relate to warm-mixed recycled asphalt mixture and preparation method thereof.
Background technology
In recent years, highway in China construction has obtained significant progress, and to the end of the year 2015, whole nation highway is open to traffic total kilometrage
Reach 12.5 ten thousand kilometers, owing to bituminous paving has enough mechanical strengths and certain elasticity, plastic deformation ability, with
When have the damping of height, driving steadily comfortable, noise is low, the not features such as airborne dust, so having repaiied and high-grade highway yet to be built
Major part is bituminous paving, particularly highway, and more than 90% is bituminous paving.It is estimated that there are about every year from now on
The bituminous paving of 12% needs to overhaul.
At present, big or middle the repairing to bituminous paving for the China substantially overlays new asphalt road again to exclude old asphalt pavement
Based on face.This way can produce a considerable amount of asphalt discarded object, if using the mode abandoned to process Bituminous concrete surface
Compound, not only results in the pollution of environment, is also a kind of great wasting of resources.Meanwhile, the exploitation of a large amount of new building stones also can
Bring serious environmental destruction.
The regeneration of asphalt is a kind of economy, environmental protection, meets the road surface recovery technique that sustainable development requires.
For many years, countries in the world extensively carry out the experimental study of asphalt regenerative utilization, reap rich fruits.Asphalt
Regenerative use technology has become one of great science and technology in highway construction in the present age.
Existing hot in-plant reclaimed be exactly wherein compare representational asphalt-regenerating technology, the hot in-plant reclaimed place to old material
Reason is typically carried out as follows: after old material being heated to uniform temperature by the second Drying, mix and stir with newly gathering materials, by adding
Adding some bitumen regenerants, recovering the performance of Bituminous concrete surface, through practice for many years, the performance of hot in-plant reclaimed asphalt mixture is excellent
Good, it is widely used always.
Warm mix asphalt technologies is used for waste and old by bound bitumen compound hot in-place recycling and the advantage of warm mix technology
The technology of asphalt regenerative, can be referred to as warm mix regeneration techniques, will additive, new mineral aggregate, new pitch, waste asphalt mix
Close material at a temperature of less than hot recycling about 20～30 DEG C, carry out mixing and stirring regeneration, heating-up temperature when reducing regeneration, energy-conservation subtract
Row, reduce pitch and regenerative agent aging, expand the proportion of utilization of old material, the excellent of energy-saving and emission-reduction and twice laid can be embodied a concentrated reflection of
Gesture.
Plantmix's temperature regeneration techniques grows up on the basis of plant-mix heat recycle technology, its production and technique and plantmix
Hot recycling is similar, but, plantmix's temperature regeneration techniques, due to the addition of warm-mixing agent, reduces and mixes and stirs temperature, saved the energy, simultaneously
Also it is capable of the old material of interpolation of greater proportion.
Plant-mix heat recycle technology and plantmix temperature regeneration techniques both approaches are required for joining for waste asphalt mixture
Standby special heating drying system, the i.e. second Drying, the equipment cost thus increasing is up to millions of unit, and heating drying system
Typically requiring use fuel to heat waste asphalt mixture, energy consumption is high.Additionally, according to practical engineering experience, waste and old drip
The individually heating of blue or green compound there is also some problems: such as waste asphalt mixture heating temperature control difficulty, is easily caused excessively old
Change and even burn, affect regenerating mixture performance；Heating produces substantial amounts of glance coal, pollutes environment, and impact is mixed and stirred and set
Standby dedusting function, increases cost；Waste asphalt mixture adhesiveness after heating is strong, conveying and cleaning difficulty etc..
Content of the invention
Based on this, it is necessary to provide a kind of low cost, low energy consumption, and ensure made warm-mixed recycled asphalt mixture performance
The preparation method of warm-mixed recycled asphalt mixture, it is to avoid the secondary heating of old asphalt mixture, directly renders to participate in virgin material
Mix and stir.
The preparation method of a kind of warm-mixed recycled asphalt mixture, the raw material components of described warm-mixed recycled asphalt mixture includes
Old asphalt mixture, warm mix regeneration asphalt, mixing and newly gathering materials and filler outward, wherein, described warm mix regeneration asphalt includes outer mixing new drip
Blue or green and warm mix regenerates complexing agent；
This preparation method comprises the steps:
(1) obtaining described old asphalt mixture, described old asphalt mixture includes Bituminous concrete surface and old gathers materials；
(2) it described old asphalt mixture is stripped and sieves, obtaining content and the performance indications of described Bituminous concrete surface, with
And the described old grating gathered materials；
The content of described Bituminous concrete surface and performance indications (mainly include that needle penetration, ductility, softening point and 135 DEG C of motions are viscous
Degree), and the acquisition methods of the described old grating gathered materials can refer to this area specification " standard specification for construction and acceptance of highway asphalt pavement "
Carry out；
(3) target capabilities of the content according to described Bituminous concrete surface and performance indications and described warm-mixed recycled asphalt mixture refers to
Mark, obtain described warm mix regeneration asphalt with in the weight of described warm-mixed recycled asphalt mixture ratio and described warm mix regeneration asphalt
The described outer weight ratio mixing new pitch and warm mix regeneration complexing agent；According to the described old grating gathered materials and described warm mix regeneration asphalt
The target grating of compound, obtains described old asphalt mixture and mixes the weight ratio newly gathering materials, and described Bituminous concrete surface outside described
The weight ratio of compound and described filler；
Each volume and weight than preparation method can refer to this area specification " standard specification for construction and acceptance of highway asphalt pavement " and enter
OK；
(4) by described outer mix newly to gather materials be heated to 190～210 DEG C；Described warm mix regeneration asphalt is heated to 155～170
℃；
(5) mix, outside described, the weight ratio newly gathering materials according to described old asphalt mixture, by the described Bituminous concrete surface under normal temperature
Compound and described filler and be heated to 190～210 DEG C described outer and mix newly to gather materials and mix and stir, obtain mixture；According to described
The volume of warm mix regeneration asphalt, the described warm mix regeneration asphalt that will warm up 155～170 DEG C is added to mix in described mixture
With,.
The preparation method of warm-mixed recycled asphalt mixture of the present invention, by adding by mixing outward new pitch and warm mix regeneration is compound
The warm mix regeneration asphalt of agent composition, can reduce rapidly and the mixing of uniform Bituminous concrete surface when adding the old asphalt mixture of normal temperature
Material and the viscosity of warm mix regeneration asphalt, and promote the fusion of the two, make the two be able to abundant mix.Meanwhile, specified temp is used
The warm mix regeneration asphalt and mixing outward of preheating newly gathers materials, and can obtain more suitable mix temperature, promote filling of each raw material further
Divide mix, prepare the Warm-Mix Bitumen Mixture meeting pavement performance, and preparation method is easily controllable, process stabilizing.
Additionally, use the preparation method of the present invention, make old asphalt mixture not preheat, directly add at normal temperatures
Add, it is to avoid the secondary that old asphalt mixture heating causes is aging, solve that heating old asphalt mixture in the past produces as viscous
Material, catches fire, and discharges that a large amount of glance coal, finished product material are defective and glance coal pollutes the series of problems such as dust-removal cloth-bag, also simultaneously
Can energy-conserving and environment-protective, it is not necessary to add the second drying bucket, greatly reduce the cost of scrap build, widely applicable.
Filler of the present invention can use this area conventional fillers, such as one or more in breeze, cement.
Wherein in an embodiment, described warm mix regeneration asphalt, in parts by weight, comprising:
Mix outward new pitch 95～97 parts
Warm mix regenerates complexing agent 3～5 parts.
Wherein in an embodiment, described outer to mix new pitch be asphalt or modified pitch.
Wherein in an embodiment, described warm mix regeneration complexing agent includes warm-mixing agent and regenerative agent.
Wherein in an embodiment, the weight ratio of described warm-mixing agent and regenerative agent is 0.5～1.5:1.5～5.
Wherein in an embodiment, described warm-mixing agent is surfactant；Described regenerative agent is light component regenerative agent.Institute
State warm mix regeneration complexing agent by reaching the effect of warm mix using surfactant as warm-mixing agent, specifically can use as aliphatic acid is sweet
Grease, aliphatic acid sorb are smooth, one or more in polysorbate, sucrose ester, coordinate and outer mix saturated point and fragrance in new pitch
Divide the effect reaching to recover Bituminous concrete surface performance；Reach to promote new Bituminous concrete surface rapid fusion additionally by using light component regenerative agent
Effect, specifically can use such as organic solvent or aromatic naphtha.
Warm mix regeneration complexing agent species in warm mix regeneration asphalt and proportioning are screened by the present invention further, thus
More excellent reduction and the effect of uniform old asphalt mixture and the viscosity of warm mix regeneration asphalt can be obtained, promote the fusion of the two.
Wherein in an embodiment, described outer mix newly gather materials include weight ratio be 2～4:0.5～1.5:4～6:22～
The rubble of the 10mm < particle diameter < 20mm of 24, the rubble of 5≤particle diameter≤10mm, the rubble of 3mm < particle diameter < 5mm are with particle diameter≤3mm's
Aggregate chips.
Wherein in an embodiment, step (5) is: mix, outside described, the weight newly gathering materials according to described old asphalt mixture
Amount ratio, by the described old asphalt mixture under normal temperature and described filler and be heated to 190～210 DEG C described mix outward newly gather materials into
Row mixes and stirs 10～20s, obtains mixture；According to the volume of described warm mix regeneration asphalt, will warm up the described temperature of 155～170 DEG C
Mix regeneration asphalt to be added to described mixture mixes and stirs 35～40s,.
Time by conservative control each step mix, it is possible to obtain going out of more suitable warm-mixed recycled asphalt mixture
Factory's temperature (generally 125～145 DEG C), it is simple to the performance of its performance and the carrying out of subsequent construction technique.
The present invention also provides the warm mix regeneration asphalt that the preparation method of described warm-mixed recycled asphalt mixture prepares
Compound.
The present invention also provides the construction technology of a kind of warm-mixed recycled asphalt mixture, uses described warm mix regenerating mixture
Constructing, this construction technology comprises the steps:
Pave described warm mix regenerating mixture equably on road surface, use dual-steel wheel road roller and pneumatic-tired rollers
Respectively roll 2～3 times, shaping,.
Detailed description of the invention
Below in conjunction with specific embodiment, warm-mixed recycled asphalt mixture of the present invention and preparation method thereof is made further in detail
Thin explanation.
Embodiment 1
1st, raw material
During 1.1 newly gather materials, coarse aggregate use the rubble of 10mm < particle diameter < 20mm, the rubble of 5≤particle diameter≤10mm and 3mm <
< rubble of 5mm, fine aggregate uses the aggregate chips of particle diameter≤3mm to particle diameter.All technical indicators gathered materials are satisfied by wanting of current specifications
Ask.
1.2 old asphalt mixtures (RAP material), use surface layer reclaimed materials in bituminous paving.
It after RAP material reclaims through milling, is dried, is stripped and sieves, obtaining the content of wherein Bituminous concrete surface and performance refers to
Mark, and the old grating gathered materials.
According to the old grating gathered materials, RAP material is divided into 0～4.75mm and 4.75～19.0mm two grades.Respectively by every grade
In old asphalt mixture, Bituminous concrete surface and old gathering materials separate, and Bituminous concrete surface carries out Indexs measure, old gathering materials carry out sieving and density
Test.Testing result is as shown in Tables 1 and 2.
The performance indications testing result of Bituminous concrete surface in table 1 RAP material
| Detection project | Experimental condition and method | Testing result |
| Needle penetration (0.1mm) | 25℃,100g,5s | 22 |
| Ductility (cm) | 5cm/min,15℃ | 4.3 |
| Softening point (DEG C) | Ring and ball method | 63.0 |
| 135 DEG C of dynamic viscosities (Pa.s) | Bu Shi rotary viscosity test | 1.240 |
Bituminous concrete surface content and old Density Detection result of gathering materials in each shelves of table 2 RAP material
1.3 warm mix regeneration asphalts
According to the content of Bituminous concrete surface in RAP material and performance indications, prepare corresponding warm mix regeneration asphalt, with weight portion
Meter, comprising: 96 parts of 70# asphalt, warm mix regeneration complexing agent 4 parts (including warm-mixing agent 1 part, light component regenerative agent 3 parts), its inspection
Survey index as shown in table 3.
Table 3 warm mix regeneration asphalt technical indicator (70#)
Meanwhile, heat is used to mix design specification (" standard specification for construction and acceptance of highway asphalt pavement "), according to Bituminous concrete surface in RAP material
Content and performance indications, obtain 70# pitch volume；Regenerate drip according to the grating gathered materials old in RAP material and required warm mix
The target grating of blue or green compound, obtains RAP material and the described outer weight ratio newly gathering materials of mixing, and RAP material and filler breeze
Weight ratio with cement.
Finally draw: in the present embodiment warm-mixed recycled asphalt mixture, the production mix proportion of each raw material is: RAP material:
The rubble of 10mm < particle diameter < 20mm: the rubble of the rubble of 5≤particle diameter≤10mm: 3mm < particle diameter < 5mm: the aggregate chips of particle diameter≤3mm:
Breeze: cement: bitumen aggregate ratio=30%:30%:10%:23%:1%:1%:4.3%, wherein, bitumen aggregate ratio refer to Bituminous concrete surface and
The weight sum of 70# asphalt, with newly gather materials the ratio with breeze, the weight sum of cement.
The present invention compared for using existing heat to mix design specification (" standard specification for construction and acceptance of highway asphalt pavement ") and warm mix
Checking carries out the refinery operation scheduling of each raw material in warm-mixed recycled asphalt mixture of the present invention, and result is as shown in table 4.
Table 4
As shown in Table 4, heat is used to mix the production that design specification carries out each raw material in warm-mixed recycled asphalt mixture of the present invention
Mix-design, prepared warm-mixed recycled asphalt mixture performance is more excellent.
2. the preparation of warm-mixed recycled asphalt mixture
Warm-mixed recycled asphalt mixture uses batch (-type) mixing apparatus mixing, before formal production, first carries out trial mix examination paving,
Determining the parameter such as duration of mixing, heating-up temperature, and the compound mixing is paved, understand the quality feelings of compound
Condition.The preparation method finally drawing comprises the following steps:
2.1 by the rubble of 10mm < particle diameter < 20mm, the rubble of 5≤particle diameter≤10mm, the rubble of 3mm < particle diameter < 5mm, particle diameter
After the aggregate chips of≤3mm is by the mixing of above-mentioned match ratio, obtains and newly gather materials, be heated to 200～210 DEG C of insulations；
Above-mentioned warm mix regeneration asphalt is heated to 155～165 DEG C of insulations by 2.2；
2.3 add the RAP material under normal temperature to the warm mix regeneration asphalt of step 2.2 according to above-mentioned match ratio, mix and stir
12s；Add newly gathering materials and breeze and cement of step 2.1 according still further to above-mentioned match ratio, mix 35s, temperature of dispatching from the factory is
About 130 DEG C.
3. the construction technology of warm-mixed recycled asphalt mixture
The warm-mixed recycled asphalt mixture preparing in 2 is carried out pavement construction, and step is as follows:
3.1 pave
The employing levelling mode of Sonic Averaging System that paves of warm-mixed recycled asphalt mixture, is set to 1.2 at the beginning of coefficient of loose laying.
Using a Tai Fugele S1800-2 to stretch paver, paving width is 3.55m, the paver speed of travel controls 2.5～
3.5m/min, paver hammer ram vibration frequency is set to 40Hz.
3.2 roll
On the premise of not producing serious passage and crack, first pressing, multiple pressure are carried out all as far as possible at a temperature of height, roll
Principle is " closely follow, slowly pressure, high frequency, by a narrow margin ".
First pressure request road roller rolls immediately following paver, checks flatness, to repair when having major defect after first pressing
Or even do over again, general use dual-steel wheel road roller or and pneumatic-tired rollers respectively roll 2～3 times, when rolling, driving wheel is towards paving
Machine, rolls from center, lateral, then rolls from low to high in superelevation section.
For checking the warm mix effect of the present embodiment warm-mixed recycled asphalt mixture, the temperature in each stage is examined
Surveying, result is as shown in table 5.
Table 5 warm-mixed recycled asphalt mixture construction temperature detects
| Project | Temperature of dispatching from the factory (DEG C) | Paving material (DEG C) | First pressing temperature (DEG C) | Final pressure temperature (DEG C) |
| Technology requires | 150 | 130～140 | ＞ 110 | ＞ 70 |
| Measured result | 140～155 | 130～145 | 115 | 73 |
Road surface testing result after completing according to engineering, the performance of the present embodiment warm-mixed recycled asphalt mixture disclosure satisfy that rule
Model requires, and the every Testing index in road surface also complies with technology and requires.
Meanwhile, immersion Marshall test and the water to the present embodiment warm-mixed recycled asphalt mixture for the indirect tensile test on frozen-thaw are used
Stability detects, and testing result shows, this compound water stabilizing is preferable, meets design and requires.
The high temperature stability performance to the present embodiment warm-mixed recycled asphalt mixture for the wheel tracking test is used to detect, detection knot
Fruit shows, the present embodiment warm-mixed recycled asphalt mixture rutting resistance is relatively strong, meets design and requires.
Embodiment 2
A kind of warm-mixed recycled asphalt mixture of the present embodiment, raw material and the preparation method of employing exist with embodiment 1, difference
In: use consist of modified pitch 97 parts, warm mix regenerative agent 3 parts (including warm-mixing agent 1.1 parts, regenerative agent 1.9 parts) warm mix again
The raw RAP material to 1.2 in embodiment 1 for the pitch reclaims.
The production mix proportion using heat to mix each raw material in the warm-mixed recycled asphalt mixture that design specification draws is: RAP material
Material: the rubble of 10mm < particle diameter < 13mm: the rubble of the rubble of 5≤particle diameter≤10mm: 3mm < particle diameter < 5mm: the stone of particle diameter≤3mm
Bits: cement: bitumen aggregate ratio=33%:37%:5%:23%:2%:4.7%.
The preparation method of this warm-mixed recycled asphalt mixture comprises the following steps:
2.1 by the rubble of 10mm < particle diameter < 13mm, the rubble of 5≤particle diameter≤10mm, the rubble of 3mm < particle diameter < 5mm, particle diameter
After the aggregate chips of≤3mm is by the mixing of above-mentioned match ratio, obtains and newly gather materials, be heated to 190～200 DEG C of insulations；
Above-mentioned warm mix regeneration asphalt is heated to 160～170 DEG C of insulations by 2.2；
2.3 add the RAP material under normal temperature to the warm mix regeneration asphalt of step 2.2 according to above-mentioned match ratio, mix and stir
20s；Add newly gathering materials and breeze and cement of step 2.1 according still further to above-mentioned match ratio, mix 40s, temperature of dispatching from the factory is
About 145 DEG C.
The warm-mixed recycled asphalt mixture of the present embodiment is constructed according to the method for embodiment 1, and to construction each
The temperature in stage is detected, and result is as shown in table 6.
Table 6 warm-mixed recycled asphalt mixture construction temperature detects
| Project | Temperature of dispatching from the factory (DEG C) | Paving material (DEG C) | First pressing temperature (DEG C) | Final pressure temperature (DEG C) |
| Technology requires | 160 | 140～150 | ＞ 130 | ＞ 90 |
| Measured result | 150 | 140 | 132 | 95 |
Road surface testing result after completing according to engineering, the performance of the present embodiment warm-mixed recycled asphalt mixture disclosure satisfy that rule
Model requires, and the every Testing index in road surface also complies with technology and requires.
Meanwhile, immersion Marshall test and the water to the present embodiment warm-mixed recycled asphalt mixture for the indirect tensile test on frozen-thaw are used
Stability detects, and testing result shows, this compound water stabilizing is preferable, meets design and requires.
The high temperature stability performance to the present embodiment warm-mixed recycled asphalt mixture for the wheel tracking test is used to detect, detection knot
Fruit shows, the present embodiment warm-mixed recycled asphalt mixture rutting resistance is relatively strong, meets design and requires.
Each technical characteristic of embodiment described above can combine arbitrarily, for making description succinct, not to above-mentioned reality
The all possible combination of each technical characteristic executed in example is all described, but, as long as the combination of these technical characteristics is not deposited
It in contradiction, is all considered to be the scope that this specification is recorded.
Embodiment described above only have expressed the several embodiments of the present invention, and it describes more concrete and detailed, but simultaneously
Can not therefore be construed as limiting the scope of the patent.It should be pointed out that, come for those of ordinary skill in the art
Saying, without departing from the inventive concept of the premise, can also make some deformation and improve, these broadly fall into the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. the preparation method of a warm-mixed recycled asphalt mixture, it is characterised in that described warm-mixed recycled asphalt mixture former
Material component includes old asphalt mixture, warm mix regeneration asphalt, mixes and newly gather materials and filler outward, wherein, and described warm mix regeneration asphalt bag
New pitch and warm mix regeneration complexing agent is mixed outside including；
This preparation method comprises the steps:
(1) obtaining described old asphalt mixture, described old asphalt mixture includes Bituminous concrete surface and old gathers materials；
(2) it described old asphalt mixture is stripped and sieves, obtaining content and the performance indications of described Bituminous concrete surface, Yi Jisuo
State the old grating gathered materials；
(3) the target capabilities index of the content according to described Bituminous concrete surface and performance indications and described warm-mixed recycled asphalt mixture,
Obtain described warm mix regeneration asphalt and institute in the weight of described warm-mixed recycled asphalt mixture ratio and described warm mix regeneration asphalt
State the outer weight ratio mixing new pitch and warm mix regeneration complexing agent；Mix according to the described old grating gathered materials and described warm mix regeneration asphalt
Close the target grating of material, obtain described old asphalt mixture and the described outer weight ratio newly gathering materials of mixing, and described Bituminous concrete surface mixes
Close the weight ratio of material and described filler；
(4) by described outer mix newly to gather materials be heated to 190～210 DEG C；Described warm mix regeneration asphalt is heated to 155～170 DEG C；
(5) mix, outside described, the weight ratio newly gathering materials according to described old asphalt mixture, by the described Bituminous concrete surface mixing under normal temperature
Material and described filler and be heated to 190～210 DEG C described and outward mix newly to gather materials and mix and stir, obtain mixture；According to described warm mix
The volume of regeneration asphalt, the described warm mix regeneration asphalt that will warm up 155～170 DEG C is added to mix and stir in described mixture, i.e.
Can.
2. the preparation method of warm-mixed recycled asphalt mixture according to claim 1, it is characterised in that described warm mix regenerates
Pitch, in parts by weight, comprising:
Mix outward new pitch 95～97 parts
Warm mix regenerates complexing agent 3～5 parts.
3. the preparation method of warm-mixed recycled asphalt mixture according to claim 1, it is characterised in that described outer mixing newly drips
Blue or green is asphalt or modified pitch.
4. the preparation method of warm-mixed recycled asphalt mixture according to claim 1, it is characterised in that described warm mix regenerates
Complexing agent includes warm-mixing agent and regenerative agent.
5. the preparation method of warm-mixed recycled asphalt mixture according to claim 4, it is characterised in that described warm-mixing agent and
The weight ratio of regenerative agent is 0.5～1.5:1.5～5.
6. the preparation method of warm-mixed recycled asphalt mixture according to claim 4, it is characterised in that described warm-mixing agent is
Surfactant；Described regenerative agent is light component regenerative agent.
7. the preparation method of warm-mixed recycled asphalt mixture according to claim 1, it is characterised in that described outer mixing newly collects
Material includes the rubble than the 10mm < particle diameter < 20mm for 2～4:0.5～1.5:4～6:22～24 for the weight, 5≤particle diameter≤10mm
The aggregate chips of rubble, the rubble of 3mm < particle diameter < 5mm and particle diameter≤3mm.
8. the preparation method of the warm-mixed recycled asphalt mixture according to any one of claim 1-7, it is characterised in that step
(5) it is: mix, outside described, the weight ratio newly gathering materials according to described old asphalt mixture, by the described old asphalt mixture under normal temperature
With described filler and be heated to 190～210 DEG C described outer and mix newly to gather materials and carry out mixing and stirring 10～20s, obtain mixture；According to described
The volume of warm mix regeneration asphalt, the described warm mix regeneration asphalt that will warm up 155～170 DEG C is added to mix and stir in described mixture
35～40s,.
9. the warm mix regeneration drip that the preparation method of the warm-mixed recycled asphalt mixture described in any one of claim 1-8 prepares
Blue or green compound.
10. the construction technology of a warm-mixed recycled asphalt mixture, it is characterised in that comprise the steps:
Pave the warm mix regenerating mixture described in claim 9 equably on road surface, use dual-steel wheel road roller and rubber tire
Road roller respectively rolls 2～3 times, shaping,.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108623201A (en) * | 2018-08-16 | 2018-10-09 | 桂勘 | A kind of preparation method of large scale regenerating waste asphalt mixture |
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| CN111393076A (en) * | 2020-03-28 | 2020-07-10 | 北京岭北筑路材料有限公司 | Asphalt mixture and preparation method thereof |
| CN111393076B (en) * | 2020-03-28 | 2022-02-15 | 北京岭北筑路材料有限公司 | Asphalt mixture and preparation method thereof |
| CN111610123A (en) * | 2020-04-14 | 2020-09-01 | 佛山市交通科技有限公司 | Method and device for measuring fluidity improvement coefficient of regenerant |
| CN112456865A (en) * | 2021-01-23 | 2021-03-09 | 天津市公路工程总公司 | High-rutting-resistance large-proportion recycled asphalt mixture and preparation method thereof |
| CN113511840A (en) * | 2021-04-01 | 2021-10-19 | 江阴永盛交通工程有限公司 | Asphalt reclaimed material capable of resisting water damage and preparation method thereof |
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