CN106316219B - A kind of reclaimed asphalt mixture and preparation method thereof - Google Patents
A kind of reclaimed asphalt mixture and preparation method thereof Download PDFInfo
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- CN106316219B CN106316219B CN201610684902.0A CN201610684902A CN106316219B CN 106316219 B CN106316219 B CN 106316219B CN 201610684902 A CN201610684902 A CN 201610684902A CN 106316219 B CN106316219 B CN 106316219B
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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
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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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/10—Coating or impregnating
- C04B20/1018—Coating or impregnating with organic materials
- C04B20/1029—Macromolecular compounds
- C04B20/1044—Bituminous materials
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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
- 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
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Abstract
The present invention relates to a kind of reclaimed asphalt mixtures and preparation method thereof.The present invention asphalt include：By the mass percent of each component and it is based on 100%：It is modified building stones to recycle asphalt pavement material 70%~90%, modified asphalt material 1%~3%, additive 1%~3%, surplus.The preparation method of reclaimed asphalt mixture of the present invention includes：Recycling asphalt pavement material is heated to 100 DEG C~120 DEG C to mix and stir, then puts into modified building stones and mixes and stirs, modified asphalt material then is added and additive mixes and stirs under the conditions of 80 DEG C~115 DEG C and is prepared into reclaimed asphalt mixture.It is high that asphalt pavement material mixture proportion is recycled in reclaimed asphalt mixture of the present invention, is improved nearly 3 times compared with 15%~30% mixture proportion as defined in current art specification, is improved the utilization rate of recycling asphalt pavement material.
Description
Technical field
The present invention relates to RAP regenerative use technologies, and in particular to a kind of reclaimed asphalt mixture and preparation method thereof.
Background technology
Existing regenerating mixture is mainly the following：
(1) hot in-plant reclaimed asphalt mixture.Include the composition of following masses percentage：30%~50% milling
Material, 44%~67% it is new gather materials, contained recycling drips in 1.5%~4% miberal powder, 1.5%~4% new pitch and the milling material
The ARA regenerative agents of green quality 0~10%.
(2) a kind of Plant-mixed thermally-modified asphalt regenerated mix includes the mixture of following masses match ratio：50%-70%
Milling waste, 25%-45% it is new gather materials, the new pitch of the miberal powder of 1.5%-4%, 1.5%-5%, 0.2%-0.5%
The regenerative agent of fiber and 0.075%-0.3%.Preparation method：1) milling waste preheats；2) old material after preheating and regenerative agent
Mix；3) the new addition of gathering materials after preheating；4) new pitch of heating, the miberal powder of preheating and fiber is added and continues mix.Accordingly, greatly
Width improves the volume of milling waste, and its pavement performance can reach at or above the new performance for mixing modified asphalt mixture and want
It asks.
(3) mixture includes No. 50 bi tumenf orr oads, new mineral aggregate and bituminous paving salvage material, by No. 50 road oil
Pitch and the ratio between old asphalt oil pitch quality part formed and the mineral aggregate mass parts formed by new, old mineral aggregate are 100：
(5.5~6.5)；Newly, it is respectively 50%~70% and 30%~50% that old mineral aggregate, which accounts for mineral aggregate percentage,；Its configuration method is by mine
60~90s of mix after material and bituminous paving salvage material are separately heated to 180~200 DEG C and 100~140 DEG C, adds temperature
No. 50 bi tumenf orr oads at 160~170 DEG C are controlled, 60~90s is stirred for, obtain manufacture temperature control at 160~170 DEG C
And the asphalt of abundance coefficient K >=3.6；The thickness that the asphalt is layed in road surface is 6~17cm.Advantage is anti-vehicle
Rut performance is good, and modulus is high, antifatigue, anti-water damage property is excellent.Energy-saving and emission-reduction can be played in road deck, improve Rut resistance
Etc. diseases ability, the effect of prolonging service life of pavement.
(4) by RAP with newly gather materials, the new plus material such as miberal powder, new pitch and regenerative agent is according to certain volume (quality point
Number), blending craft carry out mix, formed regeneration SBS asphalts.Wherein, RAP and all kinds of new plus material volume difference
For：30%~60% RAP, 1%~4% miberal powder, 1%~6% new pitch, 0.08%~0.2% regenerative agent, remaining
Newly to gather materials, total weight meets 100%.
(5) RAP, newly gather materials, the mass percent of miberal powder, new pitch is：The RAP of 15~40wt%, 0.2~4wt%
The new pitch of miberal powder, 1~4wt%, newly to gather materials, gross mass meets 100% for remaining.
(6) 40%~65% milling waste；30%~50% gathers materials；1.5% miberal powder；1.5% common silicic acid
Salt cement；0.3% polyester fiber or basalt fibre；2.8%~3.9% matrix pitch.The present invention can be by the volume of RAP
40%~65% can be promoted to.
Above-mentioned existing reclaimed asphalt mixture has the following problems：
(1) since recycling asphalt pavement material performance variability is larger, so recycling asphalt pavement material mixture proportion is low,
Code requirement bituminous pavement top salvage material mixture proportion is not higher than 30%, so recycling asphalt pavement material utilization rate is low.
Recycling asphalt pavement material bulk deposition is caused, does not only take up a large amount of soils, and pollute environment, waste of resource.
(2) due to reclaimed asphalt mixture aging conglomeration, reclaimed asphalt mixture mixes and stirs temperature height, mixing time
Long, heating energy consumption is big, and batching plant smoke discharge amount increases, and causes environmental pollution, and excessively high temperature of mixing and stirring easily causes pitch
Secondary aging reduces the pavement performance of reclaimed asphalt mixture.
(3) it due to reclaimed asphalt mixture aging conglomeration etc., recycles asphalt pavement material and newly gathers materials, pitch mixes and stirs
It is uneven, easily there are the early stages Asphalt Pavement Damages such as part isolation, loose, track, therefore mixing for specification limit salvage material is matched
Amount.
Invention content
It is an object of the present invention to provide a kind of reclaimed asphalt mixtures, can reduce reclaimed asphalt mixture production temperature
Degree reduces the discharge capacity of noxious fume, improves recycling asphalt pavement material mixture proportion and utilization rate.
The present invention reclaimed asphalt mixture include：By the mass percent of each component and it is based on 100%：Recycle asphalt road
Plane materiel material 70%~90%, modified asphalt material 1%~3%, additive 1%~3%, surplus are modified building stones；The modification
Asphalt material includes：By the mass percent of each component and it is based on 100%：Modifying agent 3%~7%, warm-mixing agent 2%~16%,
Regenerative agent 5%~15%, surplus are asphalt；The modifying agent is styrene-butadiene latex (SBR), natural rubber newborn (NR), neoprene
Latex (CR), NBR latex (ABR), s-B-S latex (SBS) and vinyl-vinyl acetate copolymer glue
A kind of and two or more mixture in newborn (EVA)；The warm-mixing agent is polyethylene wax, microwax, ethane-acetic acid ethyenyl ester
The mixture of one or more of copolymer waxes (EVA) and stearic acid；The regenerative agent is furfural extract oil or aromatic hydrocarbons
Oil；The additive includes：By the mass percent of each component and it is based on 100%：Reclaimed asphalt mixture modifying agent 20%~
40%, surplus is reclaimed asphalt mixture warm-mixing agent, and the reclaimed asphalt mixture modifying agent is rubber and plastic compound modifying agent
MaR, the reclaimed asphalt mixture warm-mixing agent are natural zeolite powder or synthetic zeolite powder；The modified building stones are that surface has wrapped
The building stones of building stones modifying agent, the building stones modifying agent are cationic emulsified bitumen.
The present invention recycles asphalt pavement material and is divided into 2 grades or 3 grades, when being divided into 2 grades according to granule size：Granularity be 0mm~
9.5mm and granularity ＞ 9.5mm；When being divided into 3 grades：Granularity is 0mm~4.75mm, granularity is 4.75mm~9.5mm, granularity >=
9.5mm。
The present invention is modified the quality proportioning of building stones modifying agent and building stones in building stones：By each component mass percent and be
100% meter：Building stones modifying agent 0.2%~1%, surplus are building stones.
Building stones of the present invention：Granularity is one or both of 5mm~10mm, 10mm~20mm, 20mm~40mm combination.
It is 50%~80% that the building stones modifying agent of stone surface of the present invention, which wraps rate,.
The present invention also provides a kind of preparation methods of reclaimed asphalt mixture, which is characterized in that the preparation method includes：
Recycling asphalt pavement material is heated to 100 DEG C~120 DEG C to mix and stir, then puts into modified building stones and mixes and stirs, modified pitch is then added
Material and additive mix and stir under the conditions of 80 DEG C~115 DEG C is prepared into reclaimed asphalt mixture.
Modified asphalt material preparation method of the present invention includes：Asphalt is heated to 100 DEG C~130 DEG C, will be changed
Property agent, warm-mixing agent, regenerative agent are added in asphalt, are stirred evenly and are prepared into modified asphalt material.
Compared with the prior art, the advantages of the present invention are as follows：
(1) it is high that asphalt pavement material mixture proportion is recycled in reclaimed asphalt mixture of the present invention, is advised compared with current art specification
15%~30% fixed mixture proportion improves nearly 3 times, improves the utilization rate of recycling asphalt pavement material.
(2) by being crushed to recycling asphalt pavement material, sieving stepping technical finesse, recycling bituminous paving is solved
Material variability is big, mixes and stirs non-uniform technical problem with other virgin materials.
(3) by adding modifying agent, warm-mixing agent and regenerative agent in petroleum asphalt material, high mixture proportion is not only solved
Recycling asphalt pavement material aging regeneration mixes and stirs temperature height and recycling asphalt mixtures performance low technical problem, and passes through system
It is standby at modified asphalt material, solve a small amount of additive the reclaimed asphalt mixture uniform mixing the technical issues of, make additive
Material plays one's part to the full.
(4) it by directly adding solid state modification agent, warm-mixing agent in cylinder in mixing for reclaimed asphalt mixture batching plant, realizes pair
The modified progress synchronous with mixing and stirring of reclaimed asphalt mixture, has played dual modified effect, has improved the comprehensive of reclaimed asphalt mixture
Pavement performance is closed, what collaboration reduced reclaimed asphalt mixture mixes and stirs temperature.
(5) stone surface is carried out by using emulsified asphalt wrapping modification, improves the interfacial property of building stones, increase changes
Property building stones and recycling asphalt pavement material between adhesiveness, increase the cohesive force of reclaimed asphalt mixture, prevent it is new and old gather materials from
It analyses and loose, effectively prevents reclaimed bituminous pavement early stage loose and pit slot disease.
(6) mixed to regeneration asphalt by the warm-mixing agent in the warm-mixing agent and reclaimed asphalt mixture in modified asphalt material
Conjunction material has carried out dual warm mix modification and has mixed and stirred technique, so that the temperature of mixing and stirring of reclaimed asphalt mixture is reduced more than 50 DEG C, reduces
Energy consumption reduces carbon emission amount.
By calculating, 1 ton of recycling asphalt pavement material, 185.9 yuan of escapable cost is often used to save 8.6kg standard coals.
Specific implementation mode
The present invention recycling asphalt pavement material preparation method include：
1. obtaining recycling bituminous paving bulk material by milling or scarifying working procedure；
2. being broken into≤30mm particles by bituminous paving bulk material is recycled using crusher；
3. will recycle asphalt pavement material using special bushing screen sieves stepping；
4. recycling asphalt pavement material is divided into 2 grades~3 grades, when being divided into 2 grades：0mm~9.5mm and ＞ 9.5mm；It is divided into 3
When shelves：0mm~4.75mm, 4.75mm~9.5mm, >=9.5mm.
The reclaimed asphalt mixture modifying agent of the present invention is Shanxi Chagnda Boyuan Highway Maintenance Technology Co., Ltd.'s production
Rubber and plastic compound modifying agent MaR.
Following embodiment is illustrated for preparing 1 ton of reclaimed asphalt mixture.
Embodiment 1：
The composition and proportioning of the reclaimed asphalt mixture of the embodiment：Recycle asphalt pavement material 700kg, modified pitch material
Expect 10kg, additive 10kg, modified building stones 280kg.
The recycling asphalt pavement material preparation method of the embodiment：Recycling pitch is obtained by milling or scarifying working procedure
Road surface bulk material；≤ 30mm particles are broken by bituminous paving bulk material is recycled using crusher；It will using special bushing screen
It recycles asphalt pavement material and sieves stepping；Recycling asphalt pavement material is divided into 2 grades：0mm~9.5mm300kg and ＞
9.5mm400kg。
The modified asphalt material composition and ratio of the embodiment:Modifying agent 3%, warm-mixing agent 2%, regenerative agent 5%, oil drip
Blueness 90%, modifying agent are styrene-butadiene latex (SBR) 0.3kg, and warm-mixing agent is polyethylene wax 0.2kg, and regenerative agent is furfural extract oil
0.5kg, asphalt are No. 70 bi tumenf orr oad 9kg.
Modified asphalt material preparation method:Pavement petroleum asphalt material is heated to 100 DEG C to be in a liquid state, will be modified respectively
Agent, warm-mixing agent, regenerative agent are proportionally added into bi tumenf orr oad, are stirred evenly and are prepared into modified asphalt material.
The additive composition and ratio of the embodiment:Reclaimed asphalt mixture modifying agent 20%, reclaimed asphalt mixture temperature
Agent 80% is mixed, reclaimed asphalt mixture modifying agent is that the rubber and plastic of Shanxi Chagnda Boyuan Highway Maintenance Technology Co., Ltd.'s production is compound
Type modifying agent MaR2kg；Reclaimed asphalt mixture warm-mixing agent is 60 mesh natural zeolite powder 8kg.
The composition and ratio of the modification building stones of the embodiment:Building stones modifying agent 0.2%, building stones 99.8%, building stones modifying agent
The cationic emulsified bitumen material 0.56kg that bitumen content is 30%；Stone Standard Value is 5mm~10mm279.44kg.
The preparation method of modified building stones:Building stones are screened or cleaned；Wrap building stones：At normal temperatures by building stones modifying agent
It is sprayed onto stone surface, stone surface formation is made to wrap layer, it is 50% that building stones modifying agent, which is sprayed onto the rate that wraps after stone surface,.
The preparation method of the embodiment reclaimed asphalt mixture：It weighs to each component according to weight ratio, asphalt road will be recycled
Plane materiel material is added to the mixing in cylinder of reclaimed asphalt mixture batching plant, is heated to 100 DEG C and mixes and stirs 20s, then modified building stones are put into
Into batching plant, 10s is mixed and stirred, 80 DEG C of modified asphalt material and additive is then added, mixes and stirs 30s, mixes and stirs 95 DEG C of temperature, makes
For at reclaimed asphalt mixture.
Embodiment 2：
The composition and proportioning of the embodiment reclaimed asphalt mixture：Recycle asphalt pavement material 900kg, modified asphalt material
30kg, additive 30kg, modified building stones 40kg.
The recycling asphalt pavement material preparation method of the embodiment：Recycling pitch is obtained by milling or scarifying working procedure
Road surface bulk material；≤ 30mm particles are broken by bituminous paving bulk material is recycled using crusher；It will using special bushing screen
It is 3 grades to recycle asphalt pavement material screening：0mm~4.75mm150kg, 4.75mm~9.5mm200kg, >=9.5mm550kg.
The modified asphalt material composition and ratio of the embodiment:Modifying agent 7%, warm-mixing agent 16%, regenerative agent 15%, oil
Pitch 62%, modifying agent are natural rubber breast (NR) 2.1kg；Warm-mixing agent is microwax 4.8kg；Regenerative agent is aromatic naphtha 4.5kg；
Asphalt is No. 90 bi tumenf orr oad 18.6kg.
The embodiment modified asphalt material preparation method：Pavement petroleum asphalt material is heated to 130 DEG C to be in a liquid state, respectively
Modifying agent, warm-mixing agent, regenerative agent are proportionally added into bi tumenf orr oad, stirs evenly and is prepared into modified asphalt material.
The embodiment additive composition and ratio：Reclaimed asphalt mixture modifying agent 40%, reclaimed asphalt mixture warm mix
Agent 60%, reclaimed asphalt mixture modifying agent are the rubber and plastic compound of Shanxi Chagnda Boyuan Highway Maintenance Technology Co., Ltd.'s production
Modifying agent MaR12kg；Reclaimed asphalt mixture warm-mixing agent is synthetic zeolite powder 18kg.
The embodiment is modified the composition and ratio of building stones:Building stones modifying agent 1%, building stones 99%, building stones modifying agent are pitch
The cationic emulsified bitumen material 0.4kg that content is 50%；Stone Standard Value is 10mm~20mm39.6kg.The preparation of modified building stones
Method:Building stones are screened or cleaned；Wrap building stones：Building stones modifying agent is sprayed onto stone surface at normal temperatures, makes building stones
Surface forms and wraps layer, and it is 80% that building stones modifying agent, which is sprayed onto the rate that wraps after stone surface,.
The preparation method of the embodiment reclaimed asphalt mixture, includes the following steps：It weighs to each component according to weight ratio,
Asphalt road plane materiel will be recycled and be added to the mixing in cylinder of reclaimed asphalt mixture batching plant, 120 DEG C are heated to and mix and stir 30s, then will change
Property building stones put into batching plant, mix and stir 20s, 100 DEG C of modified asphalt material and additive be then added, mix and stir 50s, mix and stir
115 DEG C of temperature, is prepared into reclaimed asphalt mixture.
Embodiment 3：
The composition and proportioning of the embodiment reclaimed asphalt mixture：Recycle asphalt pavement material 800kg, modified asphalt material
20kg, additive 20kg, modified building stones 160kg.
The embodiment recycles asphalt pavement material preparation method：Recycling asphalt road is obtained by milling or scarifying working procedure
Face bulk material；≤ 30mm particles are broken by bituminous paving bulk material is recycled using crusher；It will be returned using special bushing screen
It is 2 grades to receive asphalt pavement material screening：0mm~9.5mm300kg and ＞ 9.5mm500kg.
The embodiment modified asphalt material composition and ratio：Modifying agent 5%, warm-mixing agent 9%, regenerative agent 10%, oil drip
Blueness 76%, modifying agent are polychloroprene latex (CR) 0.5kg, NBR latex (ABR) 0.5kg；Warm-mixing agent is total for ethane-acetic acid ethyenyl ester
Polymers wax (EVA) 1.8kg；Regenerative agent is furfural extract oil 2kg；Asphalt is No. 110 bi tumenf orr oad 15.2kg.
The embodiment modified asphalt material preparation method:Pavement petroleum asphalt material is heated to 115 DEG C to be in a liquid state, respectively
Modifying agent, warm-mixing agent, regenerative agent are proportionally added into bi tumenf orr oad, stirs evenly and is prepared into modified asphalt material.
Additive composition and ratio:Reclaimed asphalt mixture modifying agent 30%, reclaimed asphalt mixture warm-mixing agent 70%, then
Raw asphalt mixed material modifier is the rubber and plastic compound modifying agent of Shanxi Chagnda Boyuan Highway Maintenance Technology Co., Ltd.'s production
MaR6kg；Reclaimed asphalt mixture warm-mixing agent is 120 mesh natural zeolite powder 14kg.
The embodiment is modified the composition and ratio of building stones:Building stones modifying agent 0.6%, building stones 99.4%, building stones modifying agent are
The cationic emulsified bitumen material 0.96kg that bitumen content is 40%；Stone Standard Value be 5mm~10mm80kg, 10mm~
20mm79.04kg the preparation method of the modification building stones:Building stones are screened or cleaned；Wrap building stones：At normal temperatures by building stones
Modifying agent is sprayed onto stone surface, and stone surface formation is made to wrap layer, and building stones modifying agent is sprayed onto after stone surface and wraps rate
It is 65%.
The preparation method of the embodiment reclaimed asphalt mixture, includes the following steps：It weighs to each component according to weight ratio,
Asphalt pavement material will be recycled and be added to the mixing in cylinder of reclaimed asphalt mixture batching plant, 110 DEG C are heated to and mix and stir 25s, then will
Modified building stones are put into batching plant, and 15s is mixed and stirred, and 90 DEG C of modified asphalt material and additive is then added, mixes and stirs 40s, mixes
With 105 DEG C of temperature, it is prepared into reclaimed asphalt mixture.
Embodiment 4:
The composition and proportioning of the embodiment reclaimed asphalt mixture：Recycle asphalt pavement material 750kg, modified asphalt material
15kg, additive 15kg, modified building stones 220kg.
The embodiment recycles asphalt pavement material preparation method：Recycling asphalt road is obtained by milling or scarifying working procedure
Face bulk material；≤ 30mm particles are broken by bituminous paving bulk material is recycled using crusher；It will be returned using special bushing screen
It is 3 grades to receive asphalt pavement material screening：0mm~4.75mm100kg, 4.75mm~9.5mm200kg, >=9.5mm450kg.
The embodiment modified asphalt material composition and ratio：Modifying agent 4%, warm-mixing agent 6%, regenerative agent 7%, asphalt
83%.Modifying agent is s-B-S latex (SBS) 0.3kg, vinyl-vinyl acetate copolymer latex
(EVA)0.3kg；Warm-mixing agent is polyethylene wax 0.4kg, stearic acid 0.5kg.Regenerative agent is aromatic naphtha 1.05kg；Asphalt is
No. 70 bi tumenf orr oad 12.45kg.Modified asphalt material preparation method：Pavement petroleum asphalt material, which is heated to 110 DEG C, is in
Modifying agent, warm-mixing agent, regenerative agent are proportionally added into bi tumenf orr oad, stir evenly and be prepared into modification by liquid respectively
Asphalt material.
The embodiment additive composition and ratio：Reclaimed asphalt mixture modifying agent 25%, reclaimed asphalt mixture warm mix
Agent：75%.Reclaimed asphalt mixture modifying agent is that the rubber and plastic of Shanxi Chagnda Boyuan Highway Maintenance Technology Co., Ltd.'s production is compound
Type modifying agent MaR3.75kg；Reclaimed asphalt mixture warm-mixing agent is 90 mesh natural zeolite powder 11.25kg.
The embodiment is modified the composition and ratio of building stones:Building stones modifying agent 0.4%, building stones 99.6%, building stones modifying agent are
The cationic emulsified bitumen material 0.88kg that bitumen content is 35%；Stone Standard Value is 20mm~40mm219.12kg.The implementation
The preparation method of the modified building stones of example；Building stones are screened or cleaned；Wrap building stones：Building stones modifying agent is sprayed onto at normal temperatures
Stone surface makes stone surface formation wrap layer, and it is 60% that building stones modifying agent, which is sprayed onto the rate that wraps after stone surface,.
The preparation method of the embodiment reclaimed asphalt mixture：Include the following steps：It weighs to each component according to weight ratio,
Asphalt pavement material will be recycled and be added to the mixing in cylinder of reclaimed asphalt mixture batching plant, 105 DEG C are heated to and mix and stir 25s, then will
Modified building stones are put into batching plant, and 15s is mixed and stirred, and 85 DEG C of modified asphalt material and additive is then added, mixes and stirs 35s, mixes
With 100 DEG C of temperature, it is prepared into reclaimed asphalt mixture.
Embodiment 5:
The composition and proportioning of the embodiment reclaimed asphalt mixture：Recycle asphalt pavement material 850kg, modified asphalt material
25kg, additive 25kg, modified building stones 100kg.
The embodiment recycles asphalt pavement material preparation method：Recycling asphalt road is obtained by milling or scarifying working procedure
Face bulk material；≤ 30mm particles are broken by bituminous paving bulk material is recycled using crusher；It will be returned using special bushing screen
It is 2 grades to receive asphalt pavement material screening：0mm~9.5mm300kg and ＞ 9.5mm550kg.
The embodiment modified asphalt material composition and ratio:Modifying agent 6%, warm-mixing agent 13%, regenerative agent 14%, oil drip
Blueness 67%, modifying agent are styrene-butadiene latex (SBR) 1kg, vinyl-vinyl acetate copolymer latex (EVA) 0.5kg；Warm-mixing agent is
Poly- microwax 1.25kg, stearic acid 2kg；Regenerative agent is furfural extract oil 3.5kg；Asphalt is No. 90 bi tumenf orr oads
16.75kg。
The embodiment modified asphalt material preparation method：Pavement petroleum asphalt material is heated to 125 DEG C to be in a liquid state, respectively
Modifying agent, warm-mixing agent, regenerative agent are proportionally added into bi tumenf orr oad, stirs evenly and is prepared into modified asphalt material.
The embodiment additive composition and ratio：Reclaimed asphalt mixture modifying agent 35%, reclaimed asphalt mixture warm mix
Agent：65%, reclaimed asphalt mixture modifying agent is that the rubber and plastic of Shanxi Chagnda Boyuan Highway Maintenance Technology Co., Ltd.'s production is compound
Type modifying agent MaR8.75kg；Reclaimed asphalt mixture warm-mixing agent is synthetic zeolite powder 16.25kg.
The embodiment is modified the composition and ratio of building stones：Building stones modifying agent 0.8%, building stones 99.2%, building stones modifying agent are
The cationic emulsified bitumen material 0.8kg that bitumen content is 45%；Stone Standard Value is 5~10mm39.2kg, 20~40mm60kg
One or both of combination.The preparation method of modified building stones：Building stones are screened or cleaned；Wrap building stones：At normal temperatures
Building stones modifying agent is sprayed onto stone surface, so that stone surface formation is wrapped layer, after building stones modifying agent is sprayed onto stone surface
It is 75% to wrap rate.
The preparation method of the embodiment reclaimed asphalt mixture, includes the following steps：It weighs to each component according to weight ratio,
Asphalt pavement material will be recycled and be added to the mixing in cylinder of reclaimed asphalt mixture batching plant, 115 DEG C are heated to and mix and stir 15s, then will
Modified building stones are put into batching plant, and 15s is mixed and stirred, and 95 DEG C of modified asphalt material and additive is then added, mixes and stirs 45s, mixes
With 110 DEG C of temperature, it is prepared into reclaimed asphalt mixture.
The reclaimed asphalt mixture prepared in Example 1~5, by People's Republic of China's professional standard《Highway engineering
Pitch and Asphalt Mixture Experiment regulation》JTG E20-2011 correlation test methods, it is dynamic to reclaimed asphalt mixture wheel tracking test
Stability, immersion Marshall test residual stability, the retained strength ratio of indirect tensile test on frozen-thaw, low temperature bend test failure strain
It is tested, Examples 1 to 5 reclaimed asphalt mixture pavement performance such as table 1.
1 Examples 1 to 5 reclaimed asphalt mixture pavement performance of table
By table 1 as it can be seen that disclosure satisfy that according to the property of the reclaimed asphalt mixture prepared by the embodiment of the present invention 1~5 in
What magnificent Ministry of Communications of people's republic promulgated《Standard specification for construction and acceptance of highway asphalt pavement》The requirement of (JTG F40-2004) technology.
It is calculated according to 1 ton of reclaimed asphalt mixture is prepared, the cost and mark that Examples 1 to 5 reclaimed asphalt mixture is saved
Quasi- coal is as shown in table 2.
2 Examples 1 to 5 reclaimed asphalt mixture performance analysis of table
| Detection project | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 |
| Save cost, member | 130.13 | 167.31 | 148.72 | 139.43 | 158.02 |
| Save standard coal, kg | 6.02 | 7.74 | 7.88 | 6.45 | 7.31 |
| Temperature is mixed and stirred in reduction, DEG C | 75 | 55 | 65 | 70 | 60 |
Claims (10)
1. a kind of reclaimed asphalt mixture, which is characterized in that the reclaimed asphalt mixture includes：By the mass percent of each component
It is counted with for 100%：Recycle asphalt pavement material 70%~90%, modified asphalt material 1%~3%, additive 1%~3%, remaining
Amount is modified building stones；
The modified asphalt material includes：By the mass percent of each component and it is based on 100%：Modifying agent 3%~7%, warm mix
Agent 2%~16%, regenerative agent 5%~15%, surplus are asphalt；
The modifying agent is styrene-butadiene latex, natural rubber breast, polychloroprene latex, NBR latex, s-B-S glue
A kind of and two or more mixture in breast and vinyl-vinyl acetate copolymer latex；
The warm-mixing agent is one kind in polyethylene wax, microwax, ethylene-vinyl acetate copolymer waxes (EVA) and stearic acid
Or two or more mixture；
The regenerative agent is furfural extract oil or aromatic naphtha；
The additive includes：By the mass percent of each component and it is based on 100%：Reclaimed asphalt mixture modifying agent 20%~
40%, surplus is reclaimed asphalt mixture warm-mixing agent, and the reclaimed asphalt mixture modifying agent is rubber and plastic compound modifying agent
MaR, the reclaimed asphalt mixture warm-mixing agent are natural zeolite powder or synthetic zeolite powder；
The modified building stones are the building stones that surface wraps building stones modifying agent, and the building stones modifying agent is cationic emulsified bitumen.
2. reclaimed asphalt mixture as described in claim 1, which is characterized in that the recycling asphalt pavement material is according to granularity
Size is divided into 2 grades or 3 grades, when being divided into 2 grades：Granularity is 0mm~9.5mm and granularity ＞ 9.5mm；When being divided into 3 grades：Granularity is 0mm
~4.75mm, granularity are 4.75mm~9.5mm, granularity >=9.5mm.
3. reclaimed asphalt mixture as described in claim 1, which is characterized in that building stones modifying agent and stone in the modified building stones
The quality proportioning of material is：By the mass percent of each component and it is based on 100%：Building stones modifying agent 0.2%~1%, surplus are stone
Material.
4. reclaimed asphalt mixture as described in claim 1, which is characterized in that the building stones：Granularity be 5mm~10mm,
One or both of 10mm~20mm, 20mm~40mm are combined.
5. reclaimed asphalt mixture as described in claim 1, which is characterized in that the building stones modifying agent of stone surface wraps rate and is
50%~80%.
6. a kind of preparation method of reclaimed asphalt mixture, which is characterized in that the preparation method includes：Asphalt road plane materiel will be recycled
Material is heated to 100 DEG C~120 DEG C and mixes and stirs, then puts into modified building stones and mix and stir, and modified asphalt material and additive is then added 80
DEG C~115 DEG C under the conditions of mix and stir and be prepared into reclaimed asphalt mixture；
The raw material for preparing of the reclaimed asphalt mixture includes：By the mass percent of each component and it is based on 100%：Recycle pitch
Ground surface material 70%~90%, modified asphalt material 1%~3%, additive 1%~3%, surplus are modified building stones；
The modified asphalt material includes：By the mass percent of each component and it is based on 100%：Modifying agent 3%~7%, warm mix
Agent 2%~16%, regenerative agent 5%~15%, surplus are asphalt,
The modifying agent is styrene-butadiene latex, natural rubber breast, polychloroprene latex, NBR latex, s-B-S glue
It is a kind of and two or more in breast and vinyl-vinyl acetate copolymer latex,
The warm-mixing agent is one or both of polyethylene wax, microwax, ethylene-vinyl acetate copolymer waxes and stearic acid
More than；
The regenerative agent is furfural extract oil or aromatic naphtha；
The additive includes：By the mass percent of each component and it is based on 100%：Reclaimed asphalt mixture modifying agent 20%~
40%, surplus is reclaimed asphalt mixture warm-mixing agent, and the reclaimed asphalt mixture modifying agent is rubber and plastic compound modifying agent
MaR, the reclaimed asphalt mixture warm-mixing agent natural zeolite powder or synthetic zeolite powder；
The modified building stones are the building stones that surface wraps building stones modifying agent, and the building stones modifying agent is cationic emulsified bitumen.
7. the preparation method of reclaimed asphalt mixture as claimed in claim 6, which is characterized in that the recycling asphalt road plane materiel
Material is divided into 2 grades or 3 grades, when being divided into 2 grades according to granule size：Granularity is 0mm~9.5mm and granularity ＞ 9.5mm；When being divided into 3 grades：
Granularity is 0mm~4.75mm, granularity is 4.75mm~9.5mm, granularity >=9.5mm.
8. the preparation method of reclaimed asphalt mixture as claimed in claim 6, which is characterized in that building stones in the modified building stones
The quality proportioning of modifying agent and building stones is：By the mass percent of each component and it is based on 100%：Building stones modifying agent 0.2%~
1%, surplus is building stones.
9. the preparation method of reclaimed asphalt mixture as claimed in claim 6, which is characterized in that the building stones：Granularity is 5mm
One or both of~10mm, 10mm~20mm, 20mm~40mm is combined.
10. the preparation method of reclaimed asphalt mixture as claimed in claim 6, which is characterized in that the modified asphalt material
Preparation method includes：Asphalt is heated to 100 DEG C~130 DEG C, modifying agent, warm-mixing agent, regenerative agent are added to oil drip
In blueness, stirs evenly and be prepared into modified asphalt material.
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| CN106986582A (en) * | 2017-04-28 | 2017-07-28 | 南京道润交通科技有限公司 | The preparation method of cold regeneration mix based on neoprene modified emulsifying asphalt |
| WO2019172888A1 (en) * | 2018-03-06 | 2019-09-12 | Wacker Chemie Ag | Process for producing a performance grade asphalt composition |
| CN108316094A (en) * | 2018-03-19 | 2018-07-24 | 六安市交通公路实业有限公司 | A kind of bituminous paving reclaimed materials and its warm mix regeneration technology |
| CN109929256A (en) * | 2019-03-15 | 2019-06-25 | 青岛中塑高新材料有限公司 | A kind of high-strength modified asphalt fusing point regulator and preparation method thereof |
| CN111704386A (en) * | 2020-07-17 | 2020-09-25 | 重庆市智翔铺道技术工程有限公司 | Smoke suppression type warm-mix modifier, warm-mix cast asphalt mixture and preparation method |
| CN112661440B (en) * | 2020-09-11 | 2022-08-23 | 重庆质能环保科技有限公司 | Plant-mixed hot-recycling high-modulus asphalt mixture and preparation method thereof |
| CN112142370A (en) * | 2020-09-14 | 2020-12-29 | 苏州三正路面工程有限公司 | Energy-saving recycled asphalt mixture and preparation method thereof |
| CN112551940A (en) * | 2020-12-10 | 2021-03-26 | 辽宁省交通科学研究院有限责任公司 | Direct-vat-set tackifying regenerative modifier and preparation and application methods thereof |
| CN113277775A (en) * | 2021-06-02 | 2021-08-20 | 扬州大学 | SMA-13 in-situ thermal regeneration asphalt mixture and preparation method thereof |
| CN113583457A (en) * | 2021-07-22 | 2021-11-02 | 武汉工程大学 | Reaction-regenerated SBS (styrene butadiene styrene) modified asphalt and preparation method thereof |
| CN114853389A (en) * | 2022-04-19 | 2022-08-05 | 遂宁天孜路新材料技术有限公司 | Preparation method of low-temperature recycled asphalt and mixture |
| CN115124279A (en) * | 2022-05-17 | 2022-09-30 | 大连市市政设计研究院有限责任公司 | Preparation method of 100% RAP warm-mixed recycled asphalt mixture |
| CN114874635B (en) * | 2022-06-10 | 2023-03-28 | 湖北长江路桥有限公司 | SBS modified asphalt containing synchronous warm-mixing regenerant and preparation method thereof |
| CN116589226B (en) * | 2023-05-24 | 2023-10-27 | 常熟路桥工程有限公司 | Regenerated asphalt mixture and preparation method thereof |
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