CN104211326B - A kind of warm-mixed recycled asphalt mixture and preparation method thereof - Google Patents
A kind of warm-mixed recycled asphalt mixture and preparation method thereof Download PDFInfo
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- CN104211326B CN104211326B CN201410424976.1A CN201410424976A CN104211326B CN 104211326 B CN104211326 B CN 104211326B CN 201410424976 A CN201410424976 A CN 201410424976A CN 104211326 B CN104211326 B CN 104211326B
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Abstract
The invention discloses a kind of warm-mixed recycled asphalt mixture, mixed and stirred and formed by warm mix regeneration asphalt, new mineral aggregate and old asphalt mixture, the warm mix regeneration asphalt is mixed and stirred with compound warm mix regenerative agent by pitch and formed.Compound warm mix regenerative agent is the composite of surfactant and oil regenerative agent.The invention also discloses a kind of preparation method of warm-mixed recycled asphalt mixture, by warm mix regeneration asphalt and new mineral aggregate and old asphalt mixture uniform mixing.The present invention is prepared into warm mix regeneration asphalt by the way that compound warm mix regenerative agent is added in pitch, then warm mix regeneration asphalt is added in new mineral aggregate and old asphalt mixture mixes and stirs to form warm-mixed recycled asphalt mixture.The preparation method of the warm-mixed recycled asphalt mixture of the present invention is simple, temperature reduction is mixed and stirred, the discharge of pernicious gas is reduced, environmental pollution is reduced, the volume of old asphalt mixture can reach 50%, while prepared warm-mixed recycled asphalt mixture has good pavement performance.
Description
Technical field
The invention belongs to technical field of road engineering materials, and in particular to a kind of warm-mixed recycled asphalt mixture and its preparation
Method.
Background technology
In recent years, the warm mix technology and regeneration techniques of pitch and asphalt as asphalt pavement construction new technology,
Increasingly it is taken seriously.
The regeneration techniques of bituminous paving, after being the pretreating process by old asphalt pavement by milling, recovery, screening, is adopted
Asphalt is mixed and stirred into again by a certain percentage with corresponding regeneration techniques and new pitch ground surface material, enables satisfaction one
Fixed pavement performance and with the technology of its surfacing again.Traditional Applied of Asphalt Pavement Recycle Technique is mainly hot recycling drip
Blue or green compound technology, heat regeneration asphalt mixture technology is that bitumen regenerant is added into old asphalt mixture and 150 are heated to
Carry out mixing and stirring regeneration with new pitch and mineral aggregate at a high temperature of DEG C -180 DEG C.Hot in-place recycling can recover the usability of aged asphalt
Can, but the secondary aging of old asphalt mixture is serious in regenerative process, causes that the pavement performance of asphalt is poor, and regeneration is mixed
It is low (within 20%) with rate.And cold recycled asphalt mixture pavement performance is poor, it is impossible to used in High Grade Bitumen Pavement.
Warm-mixed asphalt pavement technique is by adding warm-mixing agent in pitch, reducing the high-temperature viscosity of pitch to realize drip
Blue or green compound can be mixed and stirred at less than 150 DEG C, and its pavement performance is not less than the pavement performance of hot-mix asphalt mixture.
At present, the warm mix of pitch and asphalt and regeneration comprehensive application technology, i.e. warm mix regeneration asphalt and warm mix be again
Raw asphalt technology receives much concern, in order to effectively organically be combined asphalt pavement warm mixing technology with regeneration techniques
Get up, be badly in need of a kind of new compound warm mix regenerative agent of exploitation, for solving pitch and asphalt mixture warm-mixing technology and regeneration
The compatibility and the compatibility issues of material of technology, this is by as realizing that what pavement material energy-conserving and environment-protective and reclamation of old material utilized open
Invasive technology.
Publication No. discloses a kind of warm-mixed recycled asphalt mixture for CN102795812A patent of invention, including：Old drip
Blue or green compound, pitch, newly gather materials, miberal powder, regenerative agent and warm-mixing agent, warm-mixing agent is the inorganic silicon aluminic acid that moisture content is 18-23%
Salt, is counted using pitch parts by weight as 1 part, 3-8 parts of old asphalt mixture, is newly gathered materials 5-28 parts, 0.3-1 parts of miberal powder, regenerative agent
0.006-0.05 parts, 0.06-0.12 parts of warm-mixing agent.The warm-mixed recycled asphalt mixture of the invention takes full advantage of Bituminous concrete surface and stone
Material, reduces the temperature of mixing and stirring of regeneration asphalt, but regenerative agent and warm-mixing agent are added in order as two kinds of additives so that temperature
The preparation method for mixing reclaimed asphalt mixture is complicated.
The content of the invention
To solve problems of the prior art, the present invention provides a kind of warm-mixed recycled asphalt mixture, by warm mix again
Raw pitch, new mineral aggregate and old asphalt mixture are mixed and stirred and formed, and the warm mix regeneration asphalt is mixed by pitch and compound warm mix regenerative agent
With into.The pitch is new pitch.Compound warm mix regenerative agent directly, is disposably added to mix and stir in pitch to be formed
Warm mix regeneration asphalt, then warm mix regeneration asphalt directly, is disposably added in new mineral aggregate and old asphalt mixture mixed and stirred
Warm-mixed recycled asphalt mixture is formed, the wherein volume of old asphalt mixture is 0-50%.Set by Bituminous Mixture Ratio
Meter determines that the consumption of bituminous cements in warm-mixed recycled asphalt mixture is 4.7-5.3%.Aging drip in old asphalt mixture
Green grass or young crops accounts for the 4.7-5.3% of old asphalt mixture.
In traditional Asphalt Pavement Construction Technique, warm mix asphalt technologies and Recycling Old Asphalt Mixture technology phase
Separation, and cause to consume a large amount of fuel in old asphalt mixture regenerative process and regeneration aspect ratio is low, the present invention is by pitch
Middle addition is a kind of to have Bituminous concrete surface regeneration and the compound warm mix regenerative agent of pitch warm mix dual-use function concurrently, mixes and stirs and warm mix regeneration drip is made
Green grass or young crops, the compound warm mix regenerative agent is a kind of composite, directly, disposably can be added in pitch, then by warm mix
Regeneration asphalt is mixed and stirred with new mineral aggregate and old asphalt mixture, so as to realize the warm mix of pitch and the regeneration of old asphalt mixture
Utilize.
Preferably, the compound warm mix regenerative agent is the composite of warm-mixing agent and regenerative agent.
The compound warm mix regenerative agent organically combines warm-mixing agent with regenerative agent, can realize that pitch and pitch are mixed
Close material and mix and stir the reduction of temperature and the regeneration of old asphalt mixture.Warm-mixing agent in the compound warm mix regenerative agent can reduce drip
Blue or green high-temperature viscosity, so as to realize that pitch and asphalt can be mixed and stirred at 100-140 DEG C, and then reduces pitch and pitch
Short ageing of the compound in work progress, improves the mixing and stirring of asphalt, consolidation effect, at the same realize energy-saving and emission-reduction and
Extend the service life of road.Regenerative agent in the compound warm mix regenerative agent can realize the regeneration of old asphalt mixture, its
Volume can reach 50%, and the utilization rate of old material is significantly improved, and then realize solid waste recycling and reduce green wood
The exploitation of material, preserves the ecological environment.
At present, generally use and be respectively added to warm-mixing agent and regenerative agent to use in pitch, the two is played respectively respectively
From effect, and the present invention combines warm-mixing agent and regenerative agent, forms a kind of composite, that is, is combined warm mix and regenerates
Agent, when in use, compound warm mix regenerative agent directly, is disposably come into operation, and plays mass action, better.
Compound warm mix regenerative agent is sticky state, atrament at normal temperatures.Compound warm mix regenerative agent need to be positioned over sealing
Aluminium vessel in preserve, be suitable for preserving for a long time at a temperature of 15-40 DEG C, be not suitable at too high or too low temperature protect
Deposit, otherwise can reduce the performance of compound warm mix regenerative agent, influence the performance of its warm mix and regeneration function.
In any of the above-described scheme preferably, the warm-mixing agent is surfactant, and the regenerative agent regenerates for oil
Agent.Surfactant is liquid, transparent, yellow substance at normal temperatures, and it in compound warm mix regenerative agent as realizing pitch warm mix
Material, at normal temperatures with good mobility.Oil regenerative agent is viscous liquid state, dark yellow color substance at normal temperatures, and it makees
To be combined the material that Bituminous concrete surface regeneration is realized in warm mix regenerative agent.
In any of the above-described scheme preferably, the surfactant is fatty glyceride, fatty acid sorbitan, gathered
One or several kinds in sorb ester, sucrose ester.The chemical stability of such surfactant is more preferable, high temperature resistant and barotolerance
More preferably pitch warm mix can be adapted to and used.
In any of the above-described scheme preferably, the oil regenerative agent be bright stock when tapped oil, lubricating oil,
One or several kinds in machine oil, heavy oil.The oil regenerative agent that the present invention is used is the mineral oil of low-viscosity petroleum, its price
It is cheap, it is readily available, it might even be possible to using the waste material of various oil plants, turn waste into wealth, greatly save cost.
The warm-mixed recycled asphalt mixture of the present invention takes full advantage of old asphalt mixture, and the volume of old asphalt mixture can
50% is reached, compound warm mix regenerative agent therein combines warm-mixing agent with regenerative agent, form composite, can be direct
Ground, disposably it is added in pitch, forms warm mix regeneration asphalt, then warm mix regeneration asphalt is mixed with new mineral aggregate and Bituminous concrete surface
Material is mixed and stirred, and has given full play to the mass action of compound warm mix regenerative agent, and the warm-mixed recycled asphalt mixture thus prepared has good
Good pavement performance.The warm mix of the achievable pitch of the present invention and the regeneration of old asphalt mixture, and then realize ground surface material
Solid waste utilize and energy-saving and emission-reduction double effectses.
The present invention also provides a kind of preparation method of above-mentioned warm-mixed recycled asphalt mixture, comprises the following steps：
(1) warm mix regeneration asphalt is prepared；
(2) warm mix regeneration asphalt is mixed and stirred at a certain temperature with new mineral aggregate and old asphalt mixture；
The warm mix regeneration asphalt is mixed and stirred with compound warm mix regenerative agent by pitch and formed.The pitch is new pitch.
Preferably, the temperature of mixing and stirring of the warm mix regeneration asphalt and new mineral aggregate and old asphalt mixture is 100-140 DEG C.
In any of the above-described scheme preferably, the warm mix regeneration asphalt and new mineral aggregate and old asphalt mixture are mixed and stirred
Temperature is 110-130 DEG C.
Traditional heated tool butt-welding asphalt, is by pitch and asphalt and height of the regenerative agent at 150-180 DEG C
Temperature is lower to be mixed and stirred, and temperature can cause secondary aging, and regeneration ratio is relatively low, and the pavement performance of pitch can be also severely impacted,
In addition, pitch and asphalt mixture heating will consume substantial amounts of fuel oil, side by side harmful gas of amplification quantity to so high temperature
Body, can cause serious environmental pollution.The preparation method of the warm-mixed recycled asphalt mixture of the present invention, can will mix and stir temperature reduction
To 100-140 DEG C, this not only reduces the discharge of pernicious gas, reduces cost, and prepared warm mix regeneration asphalt mixing
Material has good pavement performance, and is not less than the pavement performance of heated tool butt-welding asphalt.
In any of the above-described scheme preferably, the warm mix regeneration asphalt and new mineral aggregate and old asphalt mixture are mixed and stirred
Time is 80-100s.The present invention by experimental results demonstrate, in the range of this mixing time, warm mix regeneration asphalt and new mineral aggregate
Can fully it be merged uniformly with old asphalt mixture.
In any of the above-described scheme preferably, the warm mix regeneration asphalt and new mineral aggregate and old asphalt mixture are mixed and stirred
Time is 90s.
In any of the above-described scheme preferably, the preparation method of the warm mix regeneration asphalt comprises the following steps：(1) will
Pitch is heated to mixing and stirring temperature；
(2) compound warm mix regenerative agent is added in the pitch for having been heated to and mix and stir temperature and mixed and stirred.
In any of the above-described scheme preferably, the temperature of mixing and stirring is 100-140 DEG C.The pitch is new pitch.
In any of the above-described scheme preferably, the mixing time of compound the warm mix regenerative agent and pitch is 120-
180s.The present invention is by experimental results demonstrate in the range of this mixing time, compound warm mix regenerative agent can fully melt with pitch
Close uniform.
In any of the above-described scheme preferably, the preparation method of the compound warm mix regenerative agent comprises the following steps：
(1) surfactant is weighed according to a certain percentage with oil regenerative agent；
(2) surfactant and oil regenerative agent are fitted into mixing apparatus and mixed and stirred.
In any of the above-described scheme preferably, formed after the surfactant is mixed and stirred with the oil regenerative agent compound
Material, the composite is compound warm mix regenerative agent.
The synthesis ratio of surfactant and oil regenerative agent is PSurfactant：POil regenerative agent,
In formula, PSurfactantThe addition quality of-surfactant, g；
POil regenerative agentThe addition quality of-oil regenerative agent, g.
The calculating formula of the addition quality of surfactant is PSurfactant=(P1+P2) × A,
In formula, P1The quality of new pitch, g in-bituminous cements；
P2The quality of aged asphalt, g in-bituminous cements；
The addition quality of A-surfactant accounts for the percentage of bituminous cements gross mass, %.
The calculating formula of the addition quality of oil regenerative agent is POil regenerative agent=P2× B,
In formula, P2The quality of aged asphalt, g in-bituminous cements；
The addition quality of B-oil regenerative agent accounts for the percentage of aged asphalt quality in bituminous cements, and %, B can pass through
The grade experiment of the degree of aging of aged asphalt and target pitch is determined.
The addition quality of surfactant is the 0.3-0.6% of bituminous cements gross mass, preferably 0.5%.
The addition quality of oil regenerative agent is the 6.0-12.0% of aged asphalt quality in bituminous cements, preferably
8.5%.
In any of the above-described scheme preferably, the surfactant is fatty glyceride, fatty acid sorbitan, gathered
One or several kinds in sorb ester, sucrose ester.
In any of the above-described scheme preferably, the oil regenerative agent be bright stock when tapped oil, lubricating oil,
One or several kinds in machine oil, heavy oil.
In any of the above-described scheme preferably, the temperature of mixing and stirring of the surfactant and the oil regenerative agent is
40-60℃.The present invention is by experimental results demonstrate at a temperature of 40-60 DEG C, surfactant and oil regenerative agent are in
The state of free-flowing, good fluidity is conducive to the two to be sufficiently mixed, and uniformly, the compound warm mix regenerative agent of preparation is liquid,
With good mobility.When temperature drops to normal temperature, compound warm mix regenerative agent is changed into sticky state, due at 40-60 DEG C
At a temperature of, surfactant and oil regenerative agent have been adequately mixed uniformly, although so compound warm mix regenerative agent under normal temperature
Sticky state is presented, but it is very uniform, fine and smooth, exist without the uneven particulate material of size.
In any of the above-described scheme preferably, the mixing time of the surfactant and the oil regenerative agent is
90-150s.The present invention is by experimental results demonstrate in the range of this mixing time, two kinds of materials can be merged fully uniformly.It is preferred that
, 120s.
Surfactant and oil regenerative agent need to be sufficiently stirred in mixing apparatus.Mixing apparatus can use agitator,
Agitator needs to rotate at a high speed so that two materials are sufficiently stirred for, merge uniform.Optimum speed is 30 turns/min.
The present invention compound warm mix regenerative agent preparation method it is simple, preparation time is short, cost is low, preparation process is without dirt
Dye, will not be damaged to environment and the person.The present invention will indicate that activating agent is organically combined with oil regenerative agent, can realize drip
Blue or green and asphalt mixes and stirs the reduction of temperature and the regeneration of old asphalt mixture, while the compound warm mix regeneration of the present invention
The production preparation process of agent is pollution-free, fundamentally solves due to traditional pitch and asphalt that to mix and stir temperature high, old
The problems such as material utilization rate is low and causes environmental pollution and the wasting of resources.
The preparation method of the warm mix regeneration asphalt of the present invention is simple, and compound warm mix regenerative agent directly, is disposably added
Uniform mixing in pitch is added to, mixing and stirring temperature significantly reduces, this not only reduces the discharge of pernicious gas, reduces cost,
And it has good pavement performance.
The preparation method of the warm-mixed recycled asphalt mixture of the present invention is simple, will with the addition of the warm mix of compound warm mix regenerative agent
Regeneration asphalt and new mineral aggregate and old asphalt mixture uniform mixing, mixing and stirring temperature significantly reduces, and greatly reduces harmful gas
The discharge of body, reduces cost, and the utilization rate of old asphalt mixture is significantly improved, and the volume of old asphalt mixture can reach 50%,
Prepared warm-mixed recycled asphalt mixture has good pavement performance simultaneously.
Embodiment
In order to be further understood that the content of the invention of the present invention, the present invention is elaborated below in conjunction with specific embodiment.
Embodiment one：
A kind of warm-mixed recycled asphalt mixture, is mixed and stirred and is formed by warm mix regeneration asphalt, new mineral aggregate and old asphalt mixture, institute
State warm mix regeneration asphalt and mixed and stirred by pitch with compound warm mix regenerative agent and formed.The pitch is new pitch.
Prepare 2 × 105G warm-mixed recycled asphalt mixtures.The volume of old asphalt mixture is 30%, i.e., 6 × 104G, wherein
Aged asphalt accounts for the quality P of 5.0%, i.e. aged asphalt2=3000g.Determine warm mix again by Bitumen Mix Design
The consumption of raw asphalt from asphalt mixture cementitious matter is that the quality of 4.8%, i.e. bituminous cements is 9600g.Bituminous cements bag
Include new pitch and aged asphalt, the quality P of new pitch1=9600-3000=6600g.
Compound warm mix regenerative agent includes surfactant and oil regenerative agent.Surfactant is fatty glyceride, often
Lower temperature is yellow, transparent, liquid；Tapped oil when oil regenerative agent is bright stock is dark yellow under normal temperature, sticky
Liquid.
Above-mentioned compound warm mix regenerative agent is prepared, is comprised the following steps：
(1) tapped oil during by fatty glyceride with bright stock is weighed according to a certain percentage.
The addition of fatty glyceride is the 0.5% of bituminous cements quality, i.e. PFatty glyceride=(P1+P2) × A=
9600 × 0.5%=48g；When experiment measures aged asphalt and is regenerated to the pitch with new pitch same levels, oil regenerative agent
Addition is the 8.5% of aged asphalt quality, i.e. PTapped oil=P2× B=3000 × 8.5%=255g, so, fatty acid glycerine
The ratio of ester and tapped oil is 1：5.3.
(2) tapped oil when fatty glyceride and bright stock is fitted into agitator and mixed and stirred to uniform shape
State.
The rotating speed of agitator is 30 turns/min, mixes and stirs temperature for 40 DEG C, the mixing time is 150s, make fatty glyceride with
Tapped oil is sufficiently stirred for, merges uniform.The compound warm mix regenerative agent prepared is at normal temperatures black, the material of sticky state, its
Performance is as shown in Table 1.
Above-mentioned warm mix regeneration asphalt is prepared, is comprised the following steps：
(1) above-mentioned pitch is heated to 120 DEG C and mixes and stirs temperature, be at flow regime.
(2) the compound warm mix regenerative agent of above-mentioned preparation is directly appended to have been heated to and mixed rapidly in 120 DEG C of pitch
With to uniform state, the mixing time is 150s.
The performance of the warm mix regeneration asphalt of preparation is as shown in Table 2.
Prepare above-mentioned warm-mixed recycled asphalt mixture：By the above-mentioned warm mix regeneration asphalt prepared and new mineral aggregate and old drip
Blue or green compound is mixed and stirred, and mixes and stirs temperature for 120 DEG C, the mixing time is 100s, uniform mixing.The warm mix regeneration drip of preparation
As shown in Table 3, pavement performance is as shown in Table 4 for the compaction capacity of blue or green compound.
Embodiment two：
A kind of warm-mixed recycled asphalt mixture, is mixed and stirred and is formed by warm mix regeneration asphalt, new mineral aggregate and old asphalt mixture, institute
State warm mix regeneration asphalt and mixed and stirred by pitch with compound warm mix regenerative agent and formed.The pitch is new pitch.
Prepare 2 × 105G warm-mixed recycled asphalt mixtures.The volume of old asphalt mixture is 10%, i.e., 2 × 104G, wherein
Aged asphalt accounts for the quality P of 5.3%, i.e. aged asphalt2=1060g.Determine warm mix again by Bitumen Mix Design
The consumption of raw asphalt from asphalt mixture cementitious matter is that the quality of 4.7%, i.e. bituminous cements is 9400g.Bituminous cements bag
Include new pitch and aged asphalt, the quality P of new pitch1=9400-1060=8340g.
Compound warm mix regenerative agent includes surfactant and oil regenerative agent.Surfactant is fatty acid sorbitan, often
Lower temperature is yellow, transparent, liquid；Oil regenerative agent is lubricating oil, is dark yellow, viscous liquid state material under normal temperature.
Above-mentioned compound warm mix regenerative agent is prepared, is comprised the following steps：
(1) fatty acid sorbitan is weighed according to a certain percentage with lubricating oil.
The addition of fatty acid sorbitan is the 0.3% of bituminous cements quality, i.e. PFatty acid sorbitan=(P1+P2) × A=
9400 × 0.3%=28.2g；When experiment measures aged asphalt and is regenerated to the pitch with new pitch same levels, oil regenerative agent
Addition be aged asphalt quality 10%, i.e. PLubricating oil=P2× B=1060 × 10%=106g, so, aliphatic acid sorb
The smooth ratio with lubricating oil is 1：3.8.
(2) fatty acid sorbitan and lubricating oil are fitted into agitator and mixed and stirred to uniform state.
The rotating speed of agitator is 30 turns/min, mixes and stirs temperature for 60 DEG C, the mixing time is 90s, make fatty acid sorbitan with
Lubricating oil is sufficiently stirred for, merges uniform.The compound warm mix regenerative agent prepared is at normal temperatures black, the material of sticky state, its
Performance is as shown in Table 1.
Above-mentioned warm mix regeneration asphalt is prepared, is comprised the following steps：
(1) above-mentioned pitch is heated to 100 DEG C and mixes and stirs temperature, be at flow regime.
(2) the compound warm mix regenerative agent of above-mentioned preparation is directly appended to have been heated to and mixed rapidly in 100 DEG C of pitch
With to uniform state, the mixing time is 180s.
The performance of the warm mix regeneration asphalt of preparation is as shown in Table 2.
Prepare above-mentioned warm-mixed recycled asphalt mixture：By the above-mentioned warm mix regeneration asphalt prepared and new mineral aggregate and old drip
Blue or green compound is mixed and stirred, and mixes and stirs temperature for 130 DEG C, the mixing time is 90s, uniform mixing.The warm mix regeneration drip of preparation
As shown in Table 3, pavement performance is as shown in Table 4 for the compaction capacity of blue or green compound.
Embodiment three：
A kind of warm-mixed recycled asphalt mixture, is mixed and stirred and is formed by warm mix regeneration asphalt, new mineral aggregate and old asphalt mixture, institute
State warm mix regeneration asphalt and mixed and stirred by pitch with compound warm mix regenerative agent and formed.The pitch is new pitch.
Prepare 2 × 105G warm-mixed recycled asphalt mixtures.The volume of old asphalt mixture is 50%, i.e., 1 × 105G, wherein
Aged asphalt accounts for the quality P of 4.7%, i.e. aged asphalt2=4700g.Determine warm mix again by Bitumen Mix Design
The consumption of raw asphalt from asphalt mixture cementitious matter is that the quality of 5.0%, i.e. bituminous cements is 10000g.Bituminous cements bag
Include new pitch and aged asphalt, the quality P of new pitch1=10000-4700=5300g.
Compound warm mix regenerative agent includes surfactant and oil regenerative agent.Under surfactant is polysorbate, normal temperature
For yellow, transparent, liquid；Oil regenerative agent is machine oil, is dark yellow, viscous liquid state material under normal temperature.
Above-mentioned compound warm mix regenerative agent is prepared, is comprised the following steps：
(1) polysorbate is weighed according to a certain percentage with machine oil.
The addition of polysorbate is the 0.6% of bituminous cements quality, i.e. PPolysorbate=(P1+P2) × A=10000 ×
0.6%=60g；When experiment measures aged asphalt and is regenerated to the pitch with new pitch same levels, the addition of oil regenerative agent
For the 6.0% of aged asphalt quality, i.e. PMachine oil=P2× B=4700 × 6.0%=282g, so, the ratio of polysorbate and machine oil
Example is 1：4.7.
(2) polysorbate and machine oil are fitted into agitator and mixed and stirred to uniform state.
The rotating speed of agitator is 30 turns/min, mixes and stirs temperature for 50 DEG C, the mixing time is 120s, makes polysorbate and machine oil
It is sufficiently stirred for, merges uniform.The compound warm mix regenerative agent prepared is at normal temperatures black, the material of sticky state, and its performance is such as
Shown in table one.
Above-mentioned warm mix regeneration asphalt is prepared, is comprised the following steps：
(1) above-mentioned pitch is heated to 140 DEG C and mixes and stirs temperature, be at flow regime.
(2) the compound warm mix regenerative agent of above-mentioned preparation is directly appended to have been heated to and mixed rapidly in 140 DEG C of pitch
With to uniform state, the mixing time is 120s.
The performance of the warm mix regeneration asphalt of preparation is as shown in Table 2.
Prepare above-mentioned warm-mixed recycled asphalt mixture：By the above-mentioned warm mix regeneration asphalt prepared and new mineral aggregate and old drip
Blue or green compound is mixed and stirred, and mixes and stirs temperature for 100 DEG C, the mixing time is 95s, uniform mixing.The warm mix regeneration drip of preparation
As shown in Table 3, pavement performance is as shown in Table 4 for the compaction capacity of blue or green compound.
Example IV：
A kind of warm-mixed recycled asphalt mixture, is mixed and stirred and is formed by warm mix regeneration asphalt, new mineral aggregate and old asphalt mixture, institute
State warm mix regeneration asphalt and mixed and stirred by pitch with compound warm mix regenerative agent and formed.The pitch is new pitch.
Prepare 2 × 105G warm-mixed recycled asphalt mixtures.The volume of old asphalt mixture is 40%, i.e., 8 × 104G, wherein
Aged asphalt accounts for the quality P of 4.8%, i.e. aged asphalt2=3840g.Determine warm mix again by Bitumen Mix Design
The consumption of raw asphalt from asphalt mixture cementitious matter is that the quality of 5.1%, i.e. bituminous cements is 10200g.Bituminous cements bag
Include new pitch and aged asphalt, the quality P of new pitch1=10200-3840=6360g.
Compound warm mix regenerative agent includes surfactant and oil regenerative agent.Surfactant is fatty glyceride and poly-
It is yellow, transparent, liquid under sorb ester, normal temperature；Oil regenerative agent is heavy oil and lubricating oil, is dark yellow under normal temperature, glutinous
Thick liquid.
Above-mentioned compound warm mix regenerative agent is prepared, is comprised the following steps：
(1) by the mixture of the mixture of fatty glyceride and polysorbate and heavy oil and lubricating oil according to a certain percentage
Weigh.
The addition of fatty glyceride and polysorbate is the 0.4% of bituminous cements quality, i.e. PFatty glyceride+poly- sorb is smooth
=(P1+P2) × A=10200 × 0.4%=40.8g；Experiment measures aged asphalt and is regenerated to pitch with new pitch same levels
When, the addition of oil regenerative agent is the 7.0% of aged asphalt quality, i.e. PHeavy oil+lubricating oil=P2× B=3840 × 7.0%=
268.8g, so, the ratio of the mixture of the mixture and heavy oil and lubricating oil of fatty glyceride and polysorbate is 1：
6.6。
(2) mixture of the mixture of fatty glyceride and polysorbate and heavy oil and lubricating oil is fitted into agitator
Mixed and stirred to uniform state.
The rotating speed of agitator is 30 turns/min, mixes and stirs temperature for 55 DEG C, the mixing time is 110s, make fatty glyceride and
Polysorbate is sufficiently stirred for heavy oil and lubricating oil, merges uniform.The compound warm mix regenerative agent prepared is at normal temperatures black, sticked
The material of thick state, its performance is as shown in Table 1.
Above-mentioned warm mix regeneration asphalt is prepared, is comprised the following steps：
(1) above-mentioned pitch is heated to 130 DEG C and mixes and stirs temperature, be at flow regime.
(2) the compound warm mix regenerative agent of above-mentioned preparation is directly appended to have been heated to and mixed rapidly in 130 DEG C of pitch
With to uniform state, the mixing time is 130s.
The performance of the warm mix regeneration asphalt of preparation is as shown in Table 2.
Prepare above-mentioned warm-mixed recycled asphalt mixture：By the above-mentioned warm mix regeneration asphalt prepared and new mineral aggregate and old drip
Blue or green compound is mixed and stirred, and mixes and stirs temperature for 140 DEG C, the mixing time is 80s, uniform mixing.The warm mix regeneration drip of preparation
As shown in Table 3, pavement performance is as shown in Table 4 for the compaction capacity of blue or green compound.
Embodiment five：
A kind of warm-mixed recycled asphalt mixture, is mixed and stirred and is formed by warm mix regeneration asphalt, new mineral aggregate and old asphalt mixture, institute
State warm mix regeneration asphalt and mixed and stirred by pitch with compound warm mix regenerative agent and formed.The pitch is new pitch.
Prepare 2 × 105G warm-mixed recycled asphalt mixtures.The volume of old asphalt mixture is 20%, i.e., 4 × 104G, wherein
Aged asphalt accounts for the quality P of 5.1%, i.e. aged asphalt2=2040g.Determine warm mix again by Bitumen Mix Design
The consumption of raw asphalt from asphalt mixture cementitious matter is that the quality of 5.3%, i.e. bituminous cements is 10600g.Bituminous cements bag
Include new pitch and aged asphalt, the quality P of new pitch1=10600-2040=8560g.
Compound warm mix regenerative agent includes surfactant and oil regenerative agent.Under surfactant is polysorbate, normal temperature
For yellow, transparent, liquid；Oil regenerative agent is heavy oil, is dark yellow, viscous liquid state material under normal temperature.
Above-mentioned compound warm mix regenerative agent is prepared, is comprised the following steps：
(1) polysorbate is weighed according to a certain percentage with heavy oil.
The addition of polysorbate is the 0.35% of bituminous cements quality, i.e. PPolysorbate=(P1+P2) × A=10600 ×
0.35%=37.1g；When experiment measures aged asphalt and is regenerated to the pitch with new pitch same levels, the addition of oil regenerative agent
Measure as the 8.0% of aged asphalt quality, i.e. PHeavy oil=P2× B=2040 × 8.0%=163.2g, so, polysorbate and heavy oil
Ratio be 1：4.4.
(2) polysorbate and heavy oil are fitted into agitator and mixed and stirred to uniform state.
The rotating speed of agitator is 30 turns/min, mixes and stirs temperature for 45 DEG C, the mixing time is 130s, makes polysorbate and heavy oil
It is sufficiently stirred for, merges uniform.The compound warm mix regenerative agent prepared is at normal temperatures black, the material of sticky state, and its performance is such as
Shown in table one.
Above-mentioned warm mix regeneration asphalt is prepared, is comprised the following steps：
(1) above-mentioned pitch is heated to 110 DEG C and mixes and stirs temperature, be at flow regime.
(2) the compound warm mix regenerative agent of above-mentioned preparation is directly appended to have been heated to and mixed rapidly in 110 DEG C of pitch
With to uniform state, the mixing time is 170s.
The performance of the warm mix regeneration asphalt of preparation is as shown in Table 2.
Prepare above-mentioned warm-mixed recycled asphalt mixture：By the above-mentioned warm mix regeneration asphalt prepared and new mineral aggregate and old drip
Blue or green compound is mixed and stirred, and mixes and stirs temperature for 110 DEG C, the mixing time is 85s, uniform mixing.The warm mix regeneration drip of preparation
As shown in Table 3, pavement performance is as shown in Table 4 for the compaction capacity of blue or green compound.
Embodiment six：
A kind of warm-mixed recycled asphalt mixture, it is identical with embodiment one, unlike：
Prepare 2 × 105G warm-mixed recycled asphalt mixtures.The volume of old asphalt mixture is 45%, i.e., 9 × 104G, wherein
Aged asphalt accounts for the quality P of 4.9%, i.e. aged asphalt2=4410g.Determine warm mix again by Bitumen Mix Design
The consumption of raw asphalt from asphalt mixture cementitious matter is that the quality of 5.2%, i.e. bituminous cements is 10400g.Bituminous cements bag
Include new pitch and aged asphalt, the quality P of new pitch1=10400-4410=5990g.
When preparing compound warm mix regenerative agent, the addition of fatty glyceride is the 0.45% of bituminous cements quality,
That is PFatty glyceride=(P1+P2) × A=10400 × 0.45%=46.8g；Experiment measure aged asphalt be regenerated to it is identical with new pitch
During the pitch of grade, the addition of oil regenerative agent is the 6.5% of aged asphalt quality, i.e. PTapped oil=P2× B=4410 ×
6.5%=286.65g, so, the ratio of fatty glyceride and tapped oil is 1：6.1.Fatty glyceride and tapped oil
Temperature is mixed and stirred for 52 DEG C, the mixing time is 100s.
When preparing warm mix regeneration asphalt, pitch is heated to 115 DEG C and mixes and stirs temperature, and compound warm mix regenerative agent is directly added
Into pitch, 140s is mixed and stirred.
When preparing warm-mixed recycled asphalt mixture, warm mix regeneration asphalt and new mineral aggregate and old asphalt mixture mix and stir temperature
Spend for 125 DEG C, the mixing time is 90s.
Embodiment seven：
A kind of warm-mixed recycled asphalt mixture, it is identical with embodiment one, unlike：
Prepare 2 × 105G warm-mixed recycled asphalt mixtures.The volume of old asphalt mixture is 35%, i.e., 7 × 104G, wherein
Aged asphalt accounts for the quality P of 5.2%, i.e. aged asphalt2=3640g.Determine warm mix again by Bitumen Mix Design
The consumption of raw asphalt from asphalt mixture cementitious matter is that the quality of 4.9%, i.e. bituminous cements is 9800g.Bituminous cements bag
Include new pitch and aged asphalt, the quality P of new pitch1=9800-3640=6160g.
When preparing compound warm mix regenerative agent, the addition of fatty glyceride is the 0.4% of bituminous cements quality, i.e.,
PFatty glyceride=(P1+P2) × A=9800 × 0.4%=39.2g；Experiment measures aged asphalt and is regenerated to and new pitch same levels
Pitch when, the addition of oil regenerative agent is the 7.5% of aged asphalt quality, i.e. PTapped oil=P2× B=3640 × 7.5%=
273g, so, the ratio of fatty glyceride and tapped oil is 1：7.0.The temperature of mixing and stirring of fatty glyceride and tapped oil is
48 DEG C, the mixing time is 140s.
When preparing warm mix regeneration asphalt, pitch is heated to 105 DEG C and mixes and stirs temperature, and compound warm mix regenerative agent is directly added
Into pitch, 160s is mixed and stirred.
When preparing warm-mixed recycled asphalt mixture, warm mix regeneration asphalt and new mineral aggregate and old asphalt mixture mix and stir temperature
Spend for 115 DEG C, the mixing time is 93s.
Embodiment eight：
A kind of warm-mixed recycled asphalt mixture, it is identical with embodiment one, unlike：
Prepare 2 × 105G warm-mixed recycled asphalt mixtures.The volume of old asphalt mixture is 25%, i.e., 5 × 104G, wherein
Aged asphalt accounts for the quality P of 5.0%, i.e. aged asphalt2=2500g.Determine warm mix again by Bitumen Mix Design
The consumption of raw asphalt from asphalt mixture cementitious matter is that the quality of 5.0%, i.e. bituminous cements is 10000g.Bituminous cements bag
Include new pitch and aged asphalt, the quality P of new pitch1=10000-2500=7500g.
When preparing compound warm mix regenerative agent, the addition of fatty glyceride is the 0.33% of bituminous cements quality,
That is PFatty glyceride=(P1+P2) × A=10000 × 0.33%=33g；Experiment measure aged asphalt be regenerated to it is mutually equal with new pitch
During the pitch of level, the addition of oil regenerative agent is the 8.8% of aged asphalt quality, i.e. PTapped oil=P2× B=2500 × 8.8%
=220g, so, the ratio of fatty glyceride and tapped oil is 1：6.7.Fatty glyceride and tapped oil mix and stir temperature
For 58 DEG C, the mixing time is 125s.
When preparing warm mix regeneration asphalt, pitch is heated to 125 DEG C and mixes and stirs temperature, and compound warm mix regenerative agent is directly added
Into pitch, 155s is mixed and stirred.
When preparing warm-mixed recycled asphalt mixture, warm mix regeneration asphalt and new mineral aggregate and old asphalt mixture mix and stir temperature
Spend for 105 DEG C, the mixing time is 100s.
Embodiment nine：
A kind of warm-mixed recycled asphalt mixture, it is identical with embodiment one, unlike：
Prepare 2 × 105G warm-mixed recycled asphalt mixtures.The volume of old asphalt mixture is 50%, i.e., 1 × 105G, wherein
Aged asphalt accounts for the quality P of 5.0%, i.e. aged asphalt2=5000g.Determine warm mix again by Bitumen Mix Design
The consumption of raw asphalt from asphalt mixture cementitious matter is that the quality of 4.8%, i.e. bituminous cements is 9600g.Bituminous cements bag
Include new pitch and aged asphalt, the quality P of new pitch1=9600-5000=4600g.
When preparing compound warm mix regenerative agent, the addition of fatty glyceride is the 0.55% of bituminous cements quality,
That is PFatty glyceride=(P1+P2) × A=9600 × 0.55%=52.8g；Experiment measure aged asphalt be regenerated to it is identical with new pitch
During the pitch of grade, the addition of oil regenerative agent is the 8.0% of aged asphalt quality, i.e. PTapped oil=P2× B=5000 ×
8.0%=400g, so, the ratio of fatty glyceride and tapped oil is 1：7.6.Fatty glyceride and tapped oil are mixed and stirred
Temperature is 43 DEG C, and the mixing time is 135s.
When preparing warm mix regeneration asphalt, pitch is heated to 135 DEG C and mixes and stirs temperature, and compound warm mix regenerative agent is directly added
Into pitch, 135s is mixed and stirred.
When preparing warm-mixed recycled asphalt mixture, warm mix regeneration asphalt and new mineral aggregate and old asphalt mixture mix and stir temperature
Spend for 135 DEG C, the mixing time is 90s.
Embodiment ten：
A kind of warm-mixed recycled asphalt mixture, it is identical with embodiment one, unlike：
Prepare 2 × 105G warm-mixed recycled asphalt mixtures.The volume of old asphalt mixture is 48%, i.e., 9.6 × 104G, its
Middle aged asphalt accounts for the quality P of 5.0%, i.e. aged asphalt2=4800g.Warm mix is determined by Bitumen Mix Design
The consumption of bituminous cements is that the quality of 5.0%, i.e. bituminous cements is 10000g in reclaimed asphalt mixture.Bituminous cements
Including new pitch and aged asphalt, the quality P of new pitch1=10000-4800=5200g.
When preparing compound warm mix regenerative agent, the addition of fatty glyceride is the 0.55% of bituminous cements quality,
That is PFatty glyceride=(P1+P2) × A=10000 × 0.55%=55g；Experiment measure aged asphalt be regenerated to it is mutually equal with new pitch
During the pitch of level, the addition of oil regenerative agent is the 6.8% of aged asphalt quality, i.e. PTapped oil=P2× B=4800 × 6.8%
=326.4g, so, the ratio of fatty glyceride and tapped oil is 1：5.9.Fatty glyceride and tapped oil mix and stir temperature
Spend for 50 DEG C, the mixing time is 120s.
When preparing warm mix regeneration asphalt, pitch is heated to 105 DEG C and mixes and stirs temperature, and compound warm mix regenerative agent is directly added
Into pitch, 150s is mixed and stirred.
When preparing warm-mixed recycled asphalt mixture, warm mix regeneration asphalt and new mineral aggregate and old asphalt mixture mix and stir temperature
Spend for 105 DEG C, the mixing time is 90s.
Embodiment 11：
A kind of warm-mixed recycled asphalt mixture, it is identical with embodiment one, unlike：
Prepare 2 × 105G warm-mixed recycled asphalt mixtures.The volume of old asphalt mixture is 38%, i.e., 7.6 × 104G, its
Middle aged asphalt accounts for the quality P of 4.7%, i.e. aged asphalt2=3572g.Warm mix is determined by Bitumen Mix Design
The consumption of bituminous cements is that the quality of 5.0%, i.e. bituminous cements is 10000g in reclaimed asphalt mixture.Bituminous cements
Including new pitch and aged asphalt, the quality P of new pitch1=10000-3572=6428g.
When preparing compound warm mix regenerative agent, the addition of fatty glyceride is the 0.55% of bituminous cements quality,
That is PFatty glyceride=(P1+P2) × A=10000 × 0.55%=55g；Experiment measure aged asphalt be regenerated to it is mutually equal with new pitch
During the pitch of level, the addition of oil regenerative agent is the 8.2% of aged asphalt quality, i.e. PTapped oil=P2× B=3572 × 8.2%
=292.9g, so, the ratio of fatty glyceride and tapped oil is 1：5.3.Fatty glyceride and tapped oil mix and stir temperature
Spend for 50 DEG C, the mixing time is 115s.
When preparing warm mix regeneration asphalt, pitch is heated to 115 DEG C and mixes and stirs temperature, and compound warm mix regenerative agent is directly added
Into pitch, 145s is mixed and stirred.
When preparing warm-mixed recycled asphalt mixture, warm mix regeneration asphalt and new mineral aggregate and old asphalt mixture mix and stir temperature
Spend for 115 DEG C, the mixing time is 90s.
Embodiment 12：
A kind of warm-mixed recycled asphalt mixture, it is identical with embodiment one, unlike：
Prepare 2 × 105G warm-mixed recycled asphalt mixtures.The volume of old asphalt mixture is 40%, i.e., 8 × 104G, wherein
Aged asphalt accounts for the quality P of 4.8%, i.e. aged asphalt2=3840g.Determine warm mix again by Bitumen Mix Design
The consumption of raw asphalt from asphalt mixture cementitious matter is that the quality of 5.0%, i.e. bituminous cements is 10000g.Bituminous cements bag
Include new pitch and aged asphalt, the quality P of new pitch1=10000-3840=6160g.
When preparing compound warm mix regenerative agent, the addition of fatty glyceride is the 0.6% of bituminous cements quality, i.e.,
PFatty glyceride=(P1+P2) × A=10000 × 0.6%=60g；Experiment measures aged asphalt and is regenerated to and new pitch same levels
Pitch when, the addition of oil regenerative agent is the 7.5% of aged asphalt quality, i.e. PTapped oil=P2× B=3840 × 7.5%=
288g, so, the ratio of fatty glyceride and tapped oil is 1：4.8.The temperature of mixing and stirring of fatty glyceride and tapped oil is
50 DEG C, the mixing time is 115s.
When preparing warm mix regeneration asphalt, pitch is heated to 120 DEG C and mixes and stirs temperature, and compound warm mix regenerative agent is directly added
Into pitch, 150s is mixed and stirred.
When preparing warm-mixed recycled asphalt mixture, warm mix regeneration asphalt and new mineral aggregate and old asphalt mixture mix and stir temperature
Spend for 105 DEG C, the mixing time is 100s.
Table one：The performance of compound warm mix regenerative agent
Table two：The performance of warm mix regeneration asphalt
Table three：AC-13 warm-mixed recycled asphalt mixture compaction capacities
Table four：AC-13 warm-mixed recycled asphalt mixture pavement performances
It will be apparent to those skilled in the art that warm-mixed recycled asphalt mixture of the present invention and preparation method thereof is including above-mentioned
The content of the invention of description of the invention and any combination of embodiment, as space is limited and for make specification concise without
Each scheme that these combinations are constituted is described one by one.Within the spirit and principles of the invention, it is any modification for being made, equivalent
Replace, improve etc., it should be included in the scope of the protection.
Claims (5)
1. a kind of warm-mixed recycled asphalt mixture, is mixed and stirred and formed by warm mix regeneration asphalt, new mineral aggregate and old asphalt mixture, it is special
Levy and be：The warm mix regeneration asphalt is mixed and stirred with compound warm mix regenerative agent by pitch and formed, and the compound warm mix regenerative agent is by temperature
Mix after agent is mixed and stirred with regenerative agent and form composite；The warm-mixing agent is surfactant, and the surfactant is aliphatic acid
One or several kinds in glyceride, fatty acid sorbitan, polysorbate, sucrose ester；The regenerative agent is oil regenerative agent, institute
The one or several kinds in tapped oil, lubricating oil, machine oil, heavy oil when stating oil regenerative agent for bright stock；
The preparation method of the warm-mixed recycled asphalt mixture comprises the following steps：
（1）Prepare warm mix regeneration asphalt；
（2）Warm mix regeneration asphalt is mixed and stirred at a certain temperature with new mineral aggregate and old asphalt mixture；
The calculation formula of the surfactant addition quality is PSurfactant=（P1+P2）× A, the oil regenerative agent adds quality
Calculation formula be POil regenerative agent=P2× B,
Wherein, P1The quality of new pitch, g in-bituminous cements；
P2The quality of aged asphalt, g in-bituminous cements；
The addition quality of A-surfactant accounts for the percentage of bituminous cements gross mass, %；
The addition quality of B-oil regenerative agent accounts for the percentage of aged asphalt quality in bituminous cements, %；
The addition quality of the surfactant is the 0.3-0.6% of bituminous cements gross mass；The addition of the oil regenerative agent
Quality is the 6.0-12.0% of aged asphalt quality in bituminous cements；The warm mix regeneration temperature of pitch and asphalt is
100-110℃；
The preparation method of the compound warm mix regenerative agent comprises the following steps：
（1）Surfactant is weighed according to a certain percentage with oil regenerative agent；
（2）Surfactant and oil regenerative agent are fitted into mixing apparatus and mixed and stirred；
The surfactant and oil regenerative agent mix and stir temperature be 40-60 DEG C, the mixing time be 90-150s.
2. warm-mixed recycled asphalt mixture as claimed in claim 1, it is characterised in that：The warm mix regeneration asphalt and new mineral aggregate
Mixing time with old asphalt mixture is 80-100s.
3. warm-mixed recycled asphalt mixture as claimed in claim 2, it is characterised in that：The warm mix regeneration asphalt and new mineral aggregate
Mixing time with old asphalt mixture is 90s.
4. warm-mixed recycled asphalt mixture as claimed in claim 1, it is characterised in that：The preparation side of the warm mix regeneration asphalt
Method comprises the following steps：
（1）Pitch is heated to mix and stir temperature；
（2）Compound warm mix regenerative agent is added in the pitch for having been heated to and mix and stir temperature and is stirred.
5. warm-mixed recycled asphalt mixture as claimed in claim 4, it is characterised in that：The compound warm mix regenerative agent and pitch
Mixing time be 120-180s.
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| CN105255205B (en) * | 2015-10-21 | 2017-08-25 | 王立志 | A kind of low-temp recovery asphalt and preparation method thereof |
| CN105255206B (en) * | 2015-11-27 | 2017-11-14 | 长安大学 | A kind of warm mix regeneration asphalt and preparation method thereof |
| CN105293996B (en) * | 2015-11-27 | 2017-06-16 | 长安大学 | A kind of preparation method of warm-mixed recycled asphalt mixture |
| CN105837090A (en) * | 2016-03-24 | 2016-08-10 | 苏交科集团股份有限公司 | High-addition-amount plant-mixed warm regenerated asphalt mixture and preparation method thereof |
| 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 |
| CN110054905B (en) * | 2019-04-30 | 2021-02-19 | 山东高速集团有限公司 | Environment-friendly asphalt warm-mix regenerant and environment-friendly warm-mix regenerated asphalt pavement mixture |
| CN110467825B (en) * | 2019-08-23 | 2022-04-01 | 武汉市市政建设集团有限公司 | Warm-mixed asphalt mixture containing reclaimed materials and preparation method thereof |
| CN112062495A (en) * | 2020-09-17 | 2020-12-11 | 西南交通大学 | Warm-mix regenerant and preparation method of warm-mix regenerated asphalt |
| CN114426777A (en) * | 2020-10-10 | 2022-05-03 | 中国石油化工股份有限公司 | Hot-mixed asphalt regenerant and preparation method and application thereof |
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