CN105111756B - A kind of high-viscosity modified asphalt additive and its preparation method and application - Google Patents
A kind of high-viscosity modified asphalt additive and its preparation method and application Download PDFInfo
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- CN105111756B CN105111756B CN201510607294.9A CN201510607294A CN105111756B CN 105111756 B CN105111756 B CN 105111756B CN 201510607294 A CN201510607294 A CN 201510607294A CN 105111756 B CN105111756 B CN 105111756B
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Abstract
The invention discloses a kind of high-viscosity modified asphalt additive, it is made up of the raw material of following parts by weight：100 parts of modified host crystal, 16~32 parts of activator, 25~58 parts of tackifier, 0.8~3 part of stabilizer；The modified host crystal is mixed by styrol copolymer and rubber powder, the mass content of styrol copolymer is 25%~50% in the modified host crystal, and surplus is rubber powder, and the activator is environment-friendly rubber oil, the tackifier are Petropols, and the stabilizer is sulphur.In addition, the invention also discloses the method and its application for preparing the high-viscosity modified asphalt additive.High-viscosity modified asphalt additive of the present invention can improve the high temperature performance and ageing-resistant performance of matrix pitch, and preparation technology is simple and good economy performance, further applies the service life that can extend porous asphalt pavement in the making of porous asphalt pavement.
Description
Technical field
The invention belongs to road asphalt field of material technology, and in particular to a kind of high-viscosity modified asphalt additive and its system
Preparation Method and application.
Background technology
With the fast development of social economy, people's trip quality requirement constantly upgrades, and transport development is also further prominent
The theory of aobvious " environment-friendly ".In field of road, the use function on road surface how is improved, how more to be pacified to society's offer
Entirely, more comfortable, more environmentally friendly road surface function, it has also become the fresh target that traffic department of China is pursued under the new period.Take a broad view of state
Inside and outside frontline technology, porous asphalt pavement mat formation because with antiskid performance is high, noise is low, suppress water smoke, prevent water drift, mitigate it is dizzy
Outstanding advantages of light, turn into one of optimal road surface form for realizing the leap of road surface function quality.
But things all has dual character, and drainage asphalt pavement is no exception, and has certain defect.Drainage asphalt
Two subject matters be present in road surface：When the blocking in space, second, the oxidation of binder.Space block can cause decrease of noise functions and
Splashing miopragia is prevented, its noise level and splashing degree become closer to traditional dense-graded mix, but as road surface
Using still in tolerance interval.The oxidation of binder then be limit drainage asphalt pavement service life principal element, phase
For traditional dense bitumen compound, the large porosity of drainage asphalt pavement accelerates the oxidation of binder.In traffic lotus
In the presence of carrying shearing force, ground surface material causes stability to lack because binder aoxidizes, and engenders that loose, pit etc. is existing
As it is rough to ultimately result in road surface.Compared with traditional dense bitumen compound, the drainage asphalt pavement shorter use longevity
Life have impact on its economy used, constrain the extensive use on this safe and environment-friendly road surface.It is therefore desirable to research and develop a kind of height
Viscosity (60 DEG C of dynamic viscosities of modified pitch are not less than 20000Pas), high temperature performance is excellent, ageing-resistant performance is good, prepares
The simple and economic preferable high-viscosity modified asphalt of property of technique, there is provided suitable for the binder of drainage asphalt pavement, with to the greatest extent
It is likely to reduced binder oxidation, prolonging service life of pavement.
The content of the invention
Change in view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is that providing a kind of high viscosity
Property asphalt additive, the high-viscosity modified asphalt additive can improve the high temperature performance and ageing-resistant performance of matrix pitch,
Preparation technology is simple and good economy performance, can extend the service life of porous asphalt pavement after use.
In order to solve the above technical problems, the technical solution adopted by the present invention is：A kind of high-viscosity modified asphalt additive, its
It is characterised by, is made up of the raw material of following parts by weight：100 parts of modified host crystal, 16~32 parts of activator, 25~58 parts of tackifier,
0.8~3 part of stabilizer；The modified host crystal is mixed by styrol copolymer and rubber powder, benzene second in the modified host crystal
The mass content of alkene copolymer is 25%~50%, and surplus is rubber powder, and the activator is environment-friendly rubber oil, the tackifier
For Petropols, the stabilizer is sulphur.
Above-mentioned a kind of high-viscosity modified asphalt additive, it is characterised in that be made up of the raw material of following parts by weight：It is modified
100 parts of host, 18~28 parts of activator, 35~48 parts of tackifier, 1.0~2.0 parts of stabilizer.
Above-mentioned a kind of high-viscosity modified asphalt additive, it is characterised in that be made up of the raw material of following parts by weight：It is modified
100 parts of host, 20 parts of activator, 42 parts of tackifier, 1.2 parts of stabilizer.
Above-mentioned a kind of high-viscosity modified asphalt additive, it is characterised in that the styrol copolymer is star-like benzene second
Alkene-butadiene-styrene block copolymer, the granularity of the rubber powder is 40~80 mesh.
Above-mentioned a kind of high-viscosity modified asphalt additive, it is characterised in that the environment-friendly rubber oil is KN4006 environmental protection
Type ring alkyl rubber oil.
In addition, present invention also offers a kind of method for preparing above-mentioned high-viscosity modified asphalt additive, it is characterised in that
Detailed process is：Modified host crystal and activator are well mixed, obtain modifying agent mother liquor, then by tackifier, stabilizer and institute
State modifying agent mother liquor to be dissolved in organic solvent, sheared under conditions of shear rate is 4500r/min~5000r/min
45min~60min, stir under conditions of being 150 DEG C~160 DEG C in temperature after shearing, be granulated after organic solvent completely volatilization
Obtain high-viscosity modified asphalt additive.
Above-mentioned method, it is characterised in that the organic solvent is acetone.
Above-mentioned method, it is characterised in that the time of the stirring is 60min~80min, and the temperature of the granulation is
140 DEG C~160 DEG C.
Further, high viscosity is prepared present invention also offers the above-mentioned high-viscosity modified asphalt additive of one kind application to be modified
The method of pitch, it is characterised in that comprise the following steps：
Step 1: matrix pitch is heated into 150 DEG C~160 DEG C, high-viscosity modified asphalt additive is then added into base
Stirred in matter pitch, obtain mixture；The quality of the high-viscosity modified asphalt additive is the 6% of matrix pitch quality
~14%；
It is then 4500r/ in shear rate Step 2: mixture described in step 1 is heated into 175 DEG C~185 DEG C
Under conditions of min~5000r/min shear 45min~60min, after shearing by the mixture temperature be 175 DEG C~185 DEG C
Under conditions of develop 1h~4h, obtain 60 DEG C of dynamic viscosities be not less than 20000Pas high-viscosity modified asphalt.
Above-mentioned method, it is characterised in that matrix pitch described in step 1 is 90# pitches.
The present invention has advantages below compared with prior art：
1st, the present invention is prepared using styrol copolymer, Petropols, environment-friendly rubber oil, rubber powder and sulphur as raw material
High-viscosity modified asphalt additive, wherein, using environment-friendly rubber oil as activator, independent rubber powder particles and benzene can be made
Ethylene copolymer pellets form elastomeric network, and it is homogeneous system to make mixed material, ensure the high rheology of material and ageing-resistant
Performance, it is steady that the high-viscosity modified asphalt being further prepared using the high-viscosity modified asphalt additive has good high temperature concurrently
Qualitative, low-temperature cracking-resistance and ageing-resistant performance.
2nd, the high-viscosity modified asphalt prepared using high-viscosity modified asphalt additive of the present invention is applied to drainage asphalt road
In the making in face, the anti-oxidant and ageing resistace of porous asphalt pavement binder can be effectively improved, preparation technology is simple
And better economy, the service life of porous asphalt pavement is improved, is widely portable in the making of drainage asphalt pavement.
3rd, high-viscosity modified asphalt is prepared using high-viscosity modified asphalt additive of the present invention to be modified with existing high viscosity
Pitch is compared, and has that preparation method is simple, asphalt performance is excellent and the advantages of low production cost.
Below by embodiment, technical scheme is described in further detail.
Embodiment
Embodiment 1
The present embodiment high-viscosity modified asphalt additive is made up of the raw material of following parts by weight：100 parts of modified host crystal, activation
20 parts of agent, 42 parts of tackifier, 1.2 parts of stabilizer；The modified host crystal is mixed by styrol copolymer and rubber powder, described
The mass content of styrol copolymer is 40% in modified host crystal, and surplus is rubber powder, and the activator is environment-friendly rubber oil, excellent
Elect KN4006 environment-friendly types naphthenic rubber oil as, the tackifier are Petropols, and the stabilizer is sulphur；The styrene
Copolymer is preferably star-like SBS, and the granularity of the rubber powder is preferably 80 mesh.
The detailed process that the present embodiment prepares high-viscosity modified asphalt additive is：
Modified host crystal and activator are well mixed, obtain modifying agent mother liquor, then by tackifier, stabilizer and described is changed
Property agent mother liquor be dissolved in organic solvent, shear rate be 4500r/min under conditions of shear 60min, in temperature after shearing
To stir under conditions of 150 DEG C, solid matter is obtained after organic solvent completely volatilization, high-viscosity modified asphalt is obtained after granulation
Additive；The organic solvent is preferably acetone, and the dosage of the organic solvent is to make tackifier, stabilizer and modifying agent mother liquor
Fully dissolving, the time of the stirring is preferably 70min, and the temperature of the granulation is preferably 150 DEG C.
The method that high-viscosity modified asphalt is prepared using the present embodiment high-viscosity modified asphalt additive is comprised the following steps：
Step 1: matrix pitch is heated into 155 DEG C, then high-viscosity modified asphalt additive is added in matrix pitch
Stir, obtain mixture；The quality of the high-viscosity modified asphalt additive is the 7% of matrix pitch quality；The base
Matter pitch is preferably SK-90# pitches；
Step 2: mixture described in step 1 is heated to 180 DEG C, then in the bar that shear rate is 4500r/min
Part down cut 60min, the mixture is developed into 2h under conditions of temperature is 180 DEG C after shearing, high viscosity is obtained and is modified drip
It is blue or green.
According to《Highway engineering pitch and Asphalt Mixture Experiment code》Method of testing specified in (JTG E20-2011),
The Specifications of the high-viscosity modified asphalt prepared to embodiment 1 are tested, and the TPS with being prepared using conventional method
Modified pitch is contrasted, and test result is shown in Table 1.
The technical indicator test result of high-viscosity modified asphalt prepared by the embodiment 1 of table 1
From table 1 it follows that high-viscosity modified asphalt prepared by the high-viscosity modified asphalt additive of Application Example 1 is each
Item index is satisfied by technical requirements, and its PG high temperature grading and the classification of PG low temperature are consistent with TPS modified pitch, and it is good to show that it has
Good high-temperature behavior and stronger anti-rut behavior, and there is suitable low-temperature cracking-resistance and ageing-resistant with TPS modified pitch
Performance, but the price of the high-viscosity modified asphalt of the preparation of embodiment 1 is much lower compared with TPS modified pitch, shows that the high viscosity is modified
Pitch has good cost performance.
Embodiment 2
The present embodiment high-viscosity modified asphalt additive is made up of the raw material of following parts by weight：100 parts of modified host crystal, activation
18 parts of agent, 48 parts of tackifier, 2.0 parts of stabilizer；The modified host crystal is mixed by styrol copolymer and rubber powder, described
The mass content of styrol copolymer is 30% in modified host crystal, and surplus is rubber powder, and the activator is environment-friendly rubber oil, excellent
Elect KN4006 environment-friendly types naphthenic rubber oil as, the tackifier are Petropols, and the stabilizer is sulphur；The styrene
Copolymer is preferably star-like SBS, and the granularity of the rubber powder is preferably 60 mesh.
The detailed process that the present embodiment prepares high-viscosity modified asphalt additive is：
Modified host crystal and activator are well mixed, obtain modifying agent mother liquor, then by tackifier, stabilizer and described is changed
Property agent mother liquor be dissolved in organic solvent, shear rate be 5000r/min under conditions of shear 45min, in temperature after shearing
To stir under conditions of 160 DEG C, solid matter is obtained after organic solvent completely volatilization, high-viscosity modified asphalt is obtained after granulation
Additive；The organic solvent is preferably acetone, and the dosage of the organic solvent is to make tackifier, stabilizer and modifying agent mother liquor
Fully dissolving, the time of the stirring is preferably 80min, and the temperature of the granulation is preferably 160 DEG C.
The method that high-viscosity modified asphalt is prepared using the present embodiment high-viscosity modified asphalt additive is comprised the following steps：
Step 1: matrix pitch is heated into 160 DEG C, then high-viscosity modified asphalt additive is added in matrix pitch
Stir, obtain mixture；The quality of the high-viscosity modified asphalt additive is the 10% of matrix pitch quality；The base
Matter pitch is preferably SK-90# pitches；
Step 2: mixture described in step 1 is heated to 185 DEG C, then in the bar that shear rate is 5000r/min
Part down cut 50min, the mixture is developed into 1h under conditions of temperature is 185 DEG C after shearing, high viscosity is obtained and is modified drip
It is blue or green.
Embodiment 3
The present embodiment high-viscosity modified asphalt additive is made up of the raw material of following parts by weight：100 parts of modified host crystal, activation
28 parts of agent, 35 parts of tackifier, 1.0 parts of stabilizer；The modified host crystal is mixed by styrol copolymer and rubber powder, described
The mass content of styrol copolymer is 45% in modified host crystal, and surplus is rubber powder, and the activator is environment-friendly rubber oil, excellent
Elect KN4006 environment-friendly types naphthenic rubber oil as, the tackifier are Petropols, and the stabilizer is sulphur；The styrene
Copolymer is preferably star-like SBS, and the granularity of the rubber powder is preferably 80 mesh.
The detailed process that the present embodiment prepares high-viscosity modified asphalt additive is：
Modified host crystal and activator are well mixed, obtain modifying agent mother liquor, then by tackifier, stabilizer and described is changed
Property agent mother liquor be dissolved in organic solvent, shear rate be 4800r/min under conditions of shear 50min, in temperature after shearing
To stir under conditions of 150 DEG C, solid matter is obtained after organic solvent completely volatilization, high-viscosity modified asphalt is obtained after granulation
Additive；The organic solvent is preferably acetone, and the dosage of the organic solvent is to make tackifier, stabilizer and modifying agent mother liquor
Fully dissolving, the time of the stirring is preferably 60min, and the temperature of the granulation is preferably 140 DEG C.
The method that high-viscosity modified asphalt is prepared using the present embodiment high-viscosity modified asphalt additive is comprised the following steps：
Step 1: matrix pitch is heated into 150 DEG C, then high-viscosity modified asphalt additive is added in matrix pitch
Stir, obtain mixture；The quality of the high-viscosity modified asphalt additive is the 12% of matrix pitch quality；The base
Matter pitch is preferably SK-90# pitches；
Step 2: mixture described in step 1 is heated to 175 DEG C, then in the bar that shear rate is 4800r/min
Part down cut 55min, the mixture is developed into 4h under conditions of temperature is 175 DEG C after shearing, high viscosity is obtained and is modified drip
It is blue or green.
According to《Highway engineering pitch and Asphalt Mixture Experiment code》Method of testing specified in (JTG E20-2011),
The related performance indicators of the high-viscosity modified asphalt prepared to embodiment 2 and embodiment 3 are tested, and test result is shown in Table 2.
High-viscosity modified asphalt technical indicator test result prepared by the embodiment 2 of table 2 and embodiment 3
From Table 2, it can be seen that high viscosity prepared by Application Example 2 and the high-viscosity modified asphalt additive of embodiment 3
Modified pitch indices are satisfied by technical requirements, have good high-temperature behavior, stronger anti-rut behavior, excellent low temperature
Crack resistance and ageing-resistant performance, and embodiment 2 and the price of the high-viscosity modified asphalt of the preparation of embodiment 3 are relatively low, show the height
Viscosity modified asphalt has good cost performance.
Embodiment 4
The present embodiment high-viscosity modified asphalt additive is made up of the raw material of following parts by weight：100 parts of modified host crystal, activation
16 parts of agent, 25 parts of tackifier, 0.8 part of stabilizer；The modified host crystal is mixed by styrol copolymer and rubber powder, described
The mass content of styrol copolymer is 25% in modified host crystal, and surplus is rubber powder, and the activator is environment-friendly rubber oil, excellent
Elect KN4006 environment-friendly types naphthenic rubber oil as, the tackifier are Petropols, and the stabilizer is sulphur；The styrene
Copolymer is preferably star-like SBS, and the granularity of the rubber powder is preferably 40 mesh.
The detailed process that the present embodiment prepares high-viscosity modified asphalt additive is：
Modified host crystal and activator are well mixed, obtain modifying agent mother liquor, then by tackifier, stabilizer and described is changed
Property agent mother liquor be dissolved in organic solvent, shear rate be 4500r/min under conditions of shear 55min, in temperature after shearing
To stir under conditions of 155 DEG C, solid matter is obtained after organic solvent completely volatilization, high-viscosity modified asphalt is obtained after granulation
Additive；The organic solvent is preferably acetone, and the dosage of the organic solvent is to make tackifier, stabilizer and modifying agent mother liquor
Fully dissolving, the time of the stirring is preferably 70min, and the temperature of the granulation is preferably 150 DEG C.
The method that high-viscosity modified asphalt is prepared using the present embodiment high-viscosity modified asphalt additive is comprised the following steps：
Step 1: matrix pitch is heated into 160 DEG C, then high-viscosity modified asphalt additive is added in matrix pitch
Stir, obtain mixture；The quality of the high-viscosity modified asphalt additive is the 14% of matrix pitch quality；The base
Matter pitch is preferably SK-90# pitches；
Step 2: mixture described in step 1 is heated to 180 DEG C, then in the bar that shear rate is 5000r/min
Part down cut 45min, the mixture is developed into 3h under conditions of temperature is 180 DEG C after shearing, high viscosity is obtained and is modified drip
It is blue or green.
Embodiment 5
The present embodiment high-viscosity modified asphalt additive is made up of the raw material of following parts by weight：100 parts of modified host crystal, activation
32 parts of agent, 58 parts of tackifier, 3 parts of stabilizer；The modified host crystal is mixed by styrol copolymer and rubber powder, described to change
Property host in styrol copolymer mass content be 50%, surplus is rubber powder, and the activator is environment-friendly rubber oil, preferably
For KN4006 environment-friendly types naphthenic rubber oil, the tackifier are Petropols, and the stabilizer is sulphur；The styrene is total to
Polymers is preferably star-like SBS, and the granularity of the rubber powder is preferably 80 mesh.
The detailed process that the present embodiment prepares high-viscosity modified asphalt additive is：
Modified host crystal and activator are well mixed, obtain modifying agent mother liquor, then by tackifier, stabilizer and described is changed
Property agent mother liquor be dissolved in organic solvent, shear rate be 4500r/min under conditions of shear 60min, in temperature after shearing
To stir under conditions of 160 DEG C, solid matter is obtained after organic solvent completely volatilization, high-viscosity modified asphalt is obtained after granulation
Additive；The organic solvent is preferably acetone, and the dosage of the organic solvent is to make tackifier, stabilizer and modifying agent mother liquor
Fully dissolving, the time of the stirring is preferably 80min, and the temperature of the granulation is preferably 160 DEG C.
The method that high-viscosity modified asphalt is prepared using the present embodiment high-viscosity modified asphalt additive is comprised the following steps：
Step 1: matrix pitch is heated into 150 DEG C, then high-viscosity modified asphalt additive is added in matrix pitch
Stir, obtain mixture；The quality of the high-viscosity modified asphalt additive is the 6% of matrix pitch quality；The base
Matter pitch is preferably SK-90# pitches；
Step 2: mixture described in step 1 is heated to 175 DEG C, then in the bar that shear rate is 4500r/min
Part down cut 50min, the mixture is developed into 2h under conditions of temperature is 170 DEG C after shearing, high viscosity is obtained and is modified drip
It is blue or green.
According to《Highway engineering pitch and Asphalt Mixture Experiment code》Method of testing specified in (JTG E20-2011),
The Specifications of the high-viscosity modified asphalt prepared to embodiment 4 and embodiment 5 are tested, and test result is shown in Table 3.
High-viscosity modified asphalt technical indicator test result prepared by the embodiment 4 of table 3 and embodiment 5
From table 3 it is observed that high viscosity prepared by Application Example 4 and the high-viscosity modified asphalt additive of embodiment 5
Modified pitch indices are satisfied by technical requirements, have good high-temperature behavior, stronger anti-rut behavior, excellent low temperature
Crack resistance and ageing-resistant performance, and embodiment 4 and the price of the high-viscosity modified asphalt of the preparation of embodiment 5 are relatively low, show the height
Viscosity modified asphalt has good cost performance.
It is described above, only it is presently preferred embodiments of the present invention, not the present invention is imposed any restrictions, it is every according to the present invention
Any simple modification, change and the equivalent structure change that technical spirit is made to above example, still fall within skill of the present invention
In the protection domain of art scheme.
Claims (7)
- A kind of 1. method that high-viscosity modified asphalt is prepared using high-viscosity modified asphalt additive, it is characterised in that high viscosity Modified asphalt additive is made up of the raw material of following parts by weight：100 parts of modified host crystal, 18~28 parts of activator, tackifier 35~ 48 parts, 1.0~2.0 parts of stabilizer；The modified host crystal is mixed by styrol copolymer and rubber powder, the modified host crystal The mass content of middle styrol copolymer is 25%~30%, and surplus is rubber powder, and the activator is environment-friendly rubber oil, described Tackifier are Petropols, and the stabilizer is sulphur, and the styrol copolymer is star-like s-B-S Block copolymer；The detailed process for preparing the high-viscosity modified asphalt additive is：Modified host crystal and activator are well mixed, changed Tackifier, stabilizer and the modifying agent mother liquor, are then dissolved in organic solvent, are in shear rate by property agent mother liquor 45min~60min is sheared under conditions of 4500r/min~5000r/min, in the condition that temperature is 150 DEG C~160 DEG C after shearing Lower stirring, solid matter is obtained after organic solvent volatilization, high-viscosity modified asphalt additive is obtained after granulation；The preparation method of the high-viscosity modified asphalt comprises the following steps：Step 1: matrix pitch is heated into 150 DEG C~160 DEG C, high-viscosity modified asphalt additive is then added into matrix drip Stirred in green grass or young crops, obtain mixture；The quality of the high-viscosity modified asphalt additive for matrix pitch quality 6%~ 14%；Step 2: mixture described in step 1 is heated into 175 DEG C~185 DEG C, then shear rate be 4500r/min~ 45min~60min is sheared under conditions of 5000r/min, by the mixture in the bar that temperature is 175 DEG C~185 DEG C after shearing 1h~4h is developed under part, obtains the high-viscosity modified asphalt that 60 DEG C of dynamic viscosities are not less than 20000Pas.
- 2. according to a kind of side that high-viscosity modified asphalt is prepared using high-viscosity modified asphalt additive described in claim 1 Method, it is characterised in that the high-viscosity modified asphalt additive is made up of the raw material of following parts by weight：100 parts of modified host crystal, it is living 20 parts of agent, 42 parts of tackifier, 1.2 parts of stabilizer.
- 3. according to a kind of side that high-viscosity modified asphalt is prepared using high-viscosity modified asphalt additive described in claim 1 Method, it is characterised in that the granularity of the rubber powder is 40~80 mesh.
- 4. according to a kind of side that high-viscosity modified asphalt is prepared using high-viscosity modified asphalt additive described in claim 1 Method, it is characterised in that the environment-friendly rubber oil is KN4006 environment-friendly types naphthenic rubber oil.
- 5. according to a kind of side that high-viscosity modified asphalt is prepared using high-viscosity modified asphalt additive described in claim 1 Method, it is characterised in that the organic solvent is acetone.
- 6. according to a kind of side that high-viscosity modified asphalt is prepared using high-viscosity modified asphalt additive described in claim 1 Method, it is characterised in that the time stirred described in the preparation process of high-viscosity modified asphalt additive is 60min~80min, institute The temperature for stating granulation is 140 DEG C~160 DEG C.
- 7. according to a kind of side that high-viscosity modified asphalt is prepared using high-viscosity modified asphalt additive described in claim 6 Method, it is characterised in that matrix pitch described in step 1 is 90# pitches.
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| CN106336674A (en) * | 2016-09-06 | 2017-01-18 | 中交三公局桥梁隧道工程有限公司 | High-viscidity and high-elasticity modified asphalt and preparation method thereof |
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| CN108395715A (en) * | 2017-02-07 | 2018-08-14 | 中国石油化工股份有限公司 | A kind of anti-aging high-viscosity asphalt additive and preparation method thereof |
| CN106867267B (en) * | 2017-02-21 | 2018-06-01 | 华北水利水电大学 | Porous asphalt pavement preventive maintenance material and preparation method thereof |
| CN108948752B (en) * | 2017-05-17 | 2020-12-01 | 中路交建(北京)工程材料技术有限公司 | Special asphalt for permeable pavement, mixture containing same and preparation method |
| CN107163594A (en) * | 2017-05-31 | 2017-09-15 | 东南大学 | A kind of high viscous rubber combined pitch and preparation method thereof |
| CN108530914A (en) * | 2018-03-29 | 2018-09-14 | 宁夏睿泰天成新材料科技有限公司 | A kind of ultra-thin wearing layer bituminous adhesiveness increasing and modifying agent of SMC |
| CN112745627B (en) * | 2019-10-30 | 2022-07-08 | 中国石油化工股份有限公司 | High-viscosity asphalt additive and preparation method thereof |
| CN111004642B (en) * | 2019-12-26 | 2021-04-16 | 许昌腾飞建材有限公司 | Production equipment and manufacturing process of asphalt mixture |
| CN111393787A (en) * | 2020-05-19 | 2020-07-10 | 上海群康沥青科技股份有限公司 | Anti-aging asphalt modifier for permeable pavement and preparation method and application thereof |
| CN112480690A (en) * | 2020-11-02 | 2021-03-12 | 上海玖鼎环保科技有限公司 | Modified asphalt for normal-temperature construction and preparation method thereof |
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| CN101613515B (en) * | 2009-07-24 | 2011-02-09 | 武汉理工大学 | High viscosity high elasticity asphalt modifier preparation method |
| CN104629391B (en) * | 2015-02-11 | 2017-06-27 | 上海市政工程设计研究总院（集团）有限公司 | High resiliency asphalt modification composition, modifying agent, modified pitch, modified asphalt mixture and preparation method |
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| CN103589177A (en) * | 2013-11-25 | 2014-02-19 | 中海沥青（泰州）有限责任公司 | Special SBS modified asphalt and preparation method thereof |
| CN103980723A (en) * | 2014-05-30 | 2014-08-13 | 福建省燕宁顺通科技发展有限责任公司 | Preparation method of stable rubber modified asphalt |
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