CN113755020A - Cold region anti-aging asphalt and preparation method thereof - Google Patents
Cold region anti-aging asphalt and preparation method thereof Download PDFInfo
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- CN113755020A CN113755020A CN202110958592.8A CN202110958592A CN113755020A CN 113755020 A CN113755020 A CN 113755020A CN 202110958592 A CN202110958592 A CN 202110958592A CN 113755020 A CN113755020 A CN 113755020A
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- 239000010426 asphalt Substances 0.000 title claims abstract description 167
- 230000003712 anti-aging effect Effects 0.000 title claims abstract description 48
- 238000002360 preparation method Methods 0.000 title claims abstract description 24
- 239000000654 additive Substances 0.000 claims abstract description 43
- 230000000996 additive effect Effects 0.000 claims abstract description 36
- 239000011159 matrix material Substances 0.000 claims abstract description 23
- 238000005336 cracking Methods 0.000 claims abstract description 10
- 239000002994 raw material Substances 0.000 claims abstract description 9
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 3
- 150000007524 organic acids Chemical class 0.000 claims abstract description 3
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims abstract description 3
- 239000000203 mixture Substances 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 12
- 239000011521 glass Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 2
- 230000032683 aging Effects 0.000 abstract description 57
- 230000007774 longterm Effects 0.000 abstract description 20
- 239000007787 solid Substances 0.000 abstract description 4
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 abstract description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052760 oxygen Inorganic materials 0.000 abstract description 3
- 239000001301 oxygen Substances 0.000 abstract description 3
- 238000004945 emulsification Methods 0.000 abstract description 2
- 238000010907 mechanical stirring Methods 0.000 abstract description 2
- 239000000843 powder Substances 0.000 abstract description 2
- 238000010008 shearing Methods 0.000 abstract description 2
- 206010016256 fatigue Diseases 0.000 description 13
- 230000002829 reductive effect Effects 0.000 description 8
- 238000005452 bending Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 230000018109 developmental process Effects 0.000 description 4
- 201000010099 disease Diseases 0.000 description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 3
- 239000003607 modifier Substances 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 230000035882 stress Effects 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 230000003679 aging effect Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000002929 anti-fatigue Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000000518 rheometry Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000013316 zoning Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/17—Amines; Quaternary ammonium compounds
- C08K5/175—Amines; Quaternary ammonium compounds containing COOH-groups; Esters or salts thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/17—Amines; Quaternary ammonium compounds
- C08K5/18—Amines; Quaternary ammonium compounds with aromatically bound amino groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses cold region anti-aging asphalt and a preparation method thereof, wherein the cold region anti-aging asphalt comprises matrix asphalt, a No. 1 additive and a No. 2 additive; the matrix asphalt is domestic No. 70 matrix asphalt; the additive 1 is an organic acid with amino and is a green powder solid at normal temperature; the 2# additive is an aniline anti-cracking agent and is a white powdery solid at normal temperature. The raw materials required by the invention have the characteristics of low price, easy acquisition and the like, the two additives have good compatibility with the asphalt, the preparation process is simple, even a high-speed emulsification shearing machine is not needed, and the preparation can be realized only by mechanical stirring. The anti-aging asphalt has simple preparation method and lower preparation condition requirement, and is easy to realize industrialization. In addition, a large number of existing tests prove that the anti-aging asphalt has good low-temperature performance, can effectively resist the influence of long-term aging on the low-temperature performance of the asphalt, has the influence of factors such as ozone and oxygen on the performance of the asphalt, and has good long-term service life.
Description
Technical Field
The invention mainly relates to cold region anti-aging asphalt and a preparation method thereof, belonging to the technical field of road petroleum asphalt.
Background
The method is characterized in that the method is widely used in China, the geographical environment and climate conditions of each region are complex, and the area of a severe cold region or a cold region accounts for more than 75% of the total area of the national soil according to the latest building climate zoning standard of China. The characteristics of cold and dry climate, large day and night temperature difference, longer freezing period and the like generally exist in the areas, the problems of extreme lack of precipitation, large water evaporation capacity, serious erosion of strong wind, thin air, strong ozone erosion, strong ultraviolet radiation and the like also exist in partial cold areas, and the asphalt pavement is very easy to crack, rut, loose, pit and other diseases under the severe environment. Under the influence of complex environments such as illumination, oxygen, freeze thawing, ultraviolet and the like, the asphalt also has irreversible chemical change, namely aging behavior, so that the generation and development of asphalt pavement diseases are greatly accelerated, the service level of the pavement is reduced, and the service life of the pavement is prolonged.
Asphalt is a typical temperature-sensitive material, the property of the asphalt is easily influenced by temperature, when the temperature is lower, the asphalt material is characterized by a Hooke elastomer, the proportion of an internal viscous component is reduced, the proportion of an elastic component is increased, the asphalt becomes hard and brittle, the asphalt deforms at the moment of stress application, the strain hysteresis phenomenon does not exist, and the cracking risk is increased. The aging effect of the asphalt can further improve the modulus of the asphalt, the viscous component is converted into the elastic component, the adhesion performance is reduced, and the capability of the asphalt for bonding the mixture is reduced. And due to the freeze-thaw cycle, the porosity of the asphalt mixture is gradually changed, the adhesion between asphalt and aggregates is gradually weakened, and the asphalt pavement is gradually damaged.
In order to relieve the service performance of asphalt in a low-temperature environment and weaken the influence of aging on the performance of an asphalt pavement, the asphalt is modified commonly, rubber modifiers such as SBS, SBR and the like are added into the asphalt to improve the low-temperature crack resistance of the asphalt, the viscoelastic performance of the asphalt is improved by adding the modifiers, the asphalt is not easy to become brittle at a high temperature, but the aging process of the asphalt is complicated, and the aging of the modifiers also exists including the aging of the asphalt. Some people try to add diatomite to modify the asphalt, so that the cohesiveness between the asphalt and mineral aggregate can be effectively improved, the relaxation capacity of the asphalt mixture is enhanced, and the low-temperature performance is improved, but the long-term effect of the low-temperature performance of the asphalt in the aging process is still to be researched. The climatic conditions of cold regions are complex, the applicability of the asphalt is also higher, and more researches on improving the climatic performance of the cold-resistant regions of the asphalt are needed.
Based on the analysis, aiming at the aging effect characteristics of the asphalt in cold regions, the development of an efficient and green cold region anti-aging asphalt product is still the future development direction. .
Disclosure of Invention
The invention aims to provide anti-aging asphalt suitable for cold regions, so as to improve the low-temperature resistance of the asphalt, reduce the performance degradation of the asphalt in the aging process, slow down the aging speed of the asphalt and relieve the generation and development of road diseases.
In order to achieve the aim, the invention adopts the technical scheme that the anti-aging asphalt is prepared from the following raw materials in parts by weight.
Matrix asphalt: 82 to 97.5 percent
Additive No. 1: 2 to 10 percent
2# additive: 0.5 to 8 percent
The matrix asphalt is domestic No. 70 matrix asphalt; the additive 1 is an organic acid with amino and is a green powder solid at normal temperature; the 2# additive is an aniline anti-cracking agent and is a white powdery solid at normal temperature.
The preparation method of the anti-aging asphalt comprises the following steps:
firstly, heating matrix asphalt in an oven at 135 +/-5 ℃ to a flowing state; secondly, transferring the mixture into a constant-temperature oil bath kettle at 135 +/-5 ℃, adding the additive No. 1 while stirring after the temperature is constant, and manually stirring the mixture for 2-5 min by using a glass rod until the mixture is completely dissolved; and adding the 2# additive, and manually stirring for 5-10 min by using a glass rod to uniformly dissolve the two additives into the matrix asphalt. Then, raising the temperature of the oil bath pot to 140 +/-5 ℃, and mechanically stirring for 30-45 min at the rotating speed of 2000-3000 r/min by using a high-torque electric stirrer; and finally, standing and maintaining at normal temperature for 5-20 min to obtain the anti-aging asphalt sample.
The asphalt required by the invention is domestic No. 70 matrix asphalt, the two additives have the characteristics of low price, easy acquisition and the like, the additives and the asphalt have good compatibility, the preparation process is simple, even a high-speed emulsification shearing machine is not needed, and the preparation can be realized only by mechanical stirring. The anti-aging asphalt has simple preparation method and lower preparation condition requirement, and is easy to realize industrialization. In addition, tests prove that the anti-aging asphalt has good low-temperature performance, can effectively resist the influence of long-term aging on the low-temperature performance of the asphalt, has the influence of factors such as ozone and oxygen on the performance, and has good long-term service life.
Drawings
FIG. 1 is a graph of the G-R parameter, stiffness modulus and creep rate for unaged as-received asphalt and aged asphalt, (a) the G-R parameter (b) the stiffness modulus (c) the creep rate;
FIG. 2 is a graph of G-R parameters, stiffness modulus, and creep rate for as-received asphalt and anti-aging asphalt after long term aging (a) G-R parameters (b) stiffness modulus (c) creep rate;
FIG. 3 is a graph showing the G-R parameters of the as-received asphalt and the anti-aging asphalt prepared in examples II, III, and IV after long-term aging;
FIG. 4 shows the stiffness modulus and creep rate of the as-received asphalt and the anti-aging asphalt prepared in examples two, three and four after long-term aging, wherein (a) is the stiffness modulus and (b) is the creep rate.
Detailed Description
The following examples are given to further illustrate the technical aspects of the present invention, but the present invention is not limited to the following examples.
The first embodiment is as follows:
the preparation method of 300g of anti-aging asphalt comprises the following raw materials in parts by weight:
matrix asphalt: 285.6g
Additive No. 1: 7.2g
2# additive: 7.2g
The preparation method comprises the following steps:
firstly, 285.6g of matrix asphalt is heated to a flowing state in an oven at 135 +/-5 ℃; secondly, transferring the mixture into a constant-temperature oil bath kettle at 135 +/-5 ℃, adding 7.2g of additive No. 1 while stirring after the temperature is constant, and manually stirring the mixture for 2-5 min by using a glass rod until the mixture is completely dissolved; and adding 7.2g of the 2# additive, and manually stirring for 5-10 min by using a glass rod to uniformly dissolve the two additives into the matrix asphalt. Then, raising the temperature of the oil bath pot to 140 +/-5 ℃, and mechanically stirring for 30-45 min at the rotating speed of 2000-3000 r/min by using a high-torque electric stirrer; and finally, standing and maintaining at normal temperature for 5-20 min to obtain the anti-aging asphalt sample.
And (3) putting the asphalt into a rotary film oven, setting the aging temperature to be 163 ℃, aging for 75min to obtain short-term aged asphalt, putting the short-term aged asphalt into a pressure aging container, setting the aging temperature to be 100 ℃, setting the pressure to be 2.1MPa, and aging for 20h to obtain long-term aged asphalt.
And obtaining a G-R parameter through a frequency scanning test to evaluate the fatigue resistance of the asphalt, and obtaining a stiffness modulus and a creep rate through a bending beam rheological test to evaluate the low-temperature cracking resistance of the asphalt.
Example two:
the preparation method of 300g of anti-aging asphalt comprises the following raw materials in parts by weight:
matrix asphalt: 283.5g
Additive No. 1: 9.9g
2# additive: 6.6g
The preparation method is the same as the first example except for the mixing amount of the base asphalt, the additive No. 1 and the additive No. 2.
And (3) putting the asphalt into a rotary film oven, setting the aging temperature to be 163 ℃, aging for 75min to obtain short-term aged asphalt, putting the short-term aged asphalt into a pressure aging container, setting the aging temperature to be 100 ℃, setting the pressure to be 2.1MPa, and aging for 20h to obtain long-term aged asphalt.
And obtaining a G-R parameter through a frequency scanning test to evaluate the fatigue resistance of the asphalt, and obtaining a stiffness modulus and a creep rate through a bending beam rheological test to evaluate the low-temperature cracking resistance of the asphalt.
Example three:
the preparation method of 300g of anti-aging asphalt comprises the following raw materials in parts by weight:
matrix asphalt: 285g
Additive No. 1: 13.2g
2# additive: 1.8g
The preparation method is the same as the first example except for the mixing amount of the base asphalt, the additive No. 1 and the additive No. 2.
And (3) putting the asphalt into a rotary film oven, setting the aging temperature to be 163 ℃, aging for 75min to obtain short-term aged asphalt, putting the short-term aged asphalt into a pressure aging container, setting the aging temperature to be 100 ℃, setting the pressure to be 2.1MPa, and aging for 20h to obtain long-term aged asphalt.
And obtaining a G-R parameter through a frequency scanning test to evaluate the fatigue resistance of the asphalt, and obtaining a stiffness modulus and a creep rate through a bending beam rheological test to evaluate the low-temperature cracking resistance of the asphalt.
Example four:
the preparation method of 300g of anti-aging asphalt comprises the following raw materials in parts by weight:
matrix asphalt: 284.4g
Additive No. 1: 4.2g
2# additive: 11.4g
The preparation method is the same as the first example except for the mixing amount of the base asphalt, the additive No. 1 and the additive No. 2.
And (3) putting the asphalt into a rotary film oven, setting the aging temperature to be 163 ℃, aging for 75min to obtain short-term aged asphalt, putting the short-term aged asphalt into a pressure aging container, setting the aging temperature to be 100 ℃, setting the pressure to be 2.1MPa, and aging for 20h to obtain long-term aged asphalt.
And obtaining a G-R parameter through a frequency scanning test to evaluate the fatigue resistance of the asphalt, and obtaining a stiffness modulus and a creep rate through a bending beam rheological test to evaluate the low-temperature cracking resistance of the asphalt.
Example five:
the preparation method of 300g of anti-aging asphalt comprises the following raw materials in parts by weight:
matrix asphalt: 270g
Additive No. 1: 18g of
2# additive: 12g of
The preparation method is the same as the first example except for the mixing amount of the base asphalt, the additive No. 1 and the additive No. 2.
And (3) putting the asphalt into a rotary film oven, setting the aging temperature to be 163 ℃, aging for 75min to obtain short-term aged asphalt, putting the short-term aged asphalt into a pressure aging container, setting the aging temperature to be 100 ℃, setting the pressure to be 2.1MPa, and aging for 20h to obtain long-term aged asphalt.
And obtaining a G-R parameter through a frequency scanning test to evaluate the fatigue resistance of the asphalt, and obtaining a stiffness modulus and a creep rate through a bending beam rheological test to evaluate the low-temperature cracking resistance of the asphalt.
In order to verify the effect of the anti-aging asphalt obtained by mixing different raw materials, the inventor conducts a great deal of experimental research. The experimental results are as follows:
the inventor carries out aging on the anti-aging asphalt prepared in the first embodiment, evaluates the fatigue resistance and the anti-aging performance of the anti-aging asphalt before aging through the G-R parameter, the stiffness modulus and the creep rate, and analyzes the anti-aging effect of the anti-aging asphalt by comparing the change conditions of the G-R parameter, the stiffness modulus and the creep rate before and after aging with the original asphalt. The G-R parameters, stiffness modulus and creep rate of the aged and virgin asphalts before aging are shown in FIG. 1. Researches such as Glover and Rowe find that G-R parameters at 15 ℃ and 0.005rad/s have good correlation with a 15 ℃ ductility test result, and are currently accepted rheological parameters for representing the fatigue resistance of asphalt, and the larger the G-R parameter is, the larger the fatigue risk is; the stiffness modulus of the asphalt is higher under low temperature conditions, namely the creep compliance is lower, the deformation adaptability is poorer, the allowable deformation is relatively smaller, and the stress change of the asphalt caused by the shrinkage strain is larger under the action of external force or the temperature is continuously reduced, so that the low-temperature crack resistance is poorer. The creep slope is used for reflecting the relaxation capacity of the asphalt under the action of stress, the larger the value is, the larger the deformation capacity is, the stronger the relaxation capacity is, and the asphalt has better low-temperature crack resistance. As shown in figure 1, the indexes of the anti-aging asphalt before aging are all better than those of original asphalt, the anti-fatigue capability is obviously enhanced, and the fatigue cracking risk is reduced to 70 percent of the original risk. The anti-aging asphalt has stiffness modulus at-12 ℃, 18 ℃ and 24 ℃ lower than that of original asphalt and creep rate higher than that of the original asphalt, thus the low-temperature performance of the asphalt is improved relative to that of the original asphalt.
The G-R parameters, stiffness modulus and creep rate of the anti-aging asphalt and the original asphalt after long-term aging are shown in FIG. 2. The G-R parameter of the asphalt is obviously enhanced after long-term aging, and the fatigue resistance is reduced. Long-term aging at all three temperatures increases stiffness modulus, decreases creep rate, and degrades low temperature crack resistance of the asphalt. The addition of the two additives in the aging process can effectively reduce the deterioration effect of aging on the fatigue performance and the low-temperature performance of the matrix asphalt, the change ranges of the G-R parameter, the stiffness modulus and the creep rate of the aging asphalt are all smaller than those of original asphalt, and the aging asphalt can effectively resist the adverse effects of long-term aging on the fatigue performance and the low-temperature performance of the asphalt.
The inventor carries out aging on three kinds of anti-aging asphalt prepared in the second, third and fourth examples, and analyzes the anti-aging effect of the anti-aging asphalt by comparing the G-R parameters, stiffness modulus and creep rate change conditions before and after aging with the original asphalt. The results of the G-R parameter test are shown in FIG. 3; the results of the bending beam rheology test are shown in fig. 4. As shown in FIG. 3, the anti-aging asphalt prepared by the three proportioning modes has a good anti-aging effect, and the adverse effect of long-term aging on the fatigue performance of the matrix asphalt can be greatly reduced. FIG. 4 shows that the stiffness modulus of three anti-aging asphalts with different proportions after long-term aging is smaller than that of original asphalt, and the stiffness increase of the anti-aging asphalt after aging is smaller than that of the original asphalt. After long-term aging, the creep rate of the anti-aging asphalt is also greater than that of original asphalt, and the anti-aging effect of the asphalt under the low-temperature action is obvious, so that the obtained anti-aging asphalt has obvious effect and has better application value on the low-temperature performance and the anti-aging performance of the asphalt pavement in cold regions.
Claims (2)
1. The cold region anti-aging asphalt is characterized in that: the anti-aging asphalt is prepared by adopting the following raw materials in parts by weight;
matrix asphalt: 82 to 97.5 percent
Additive No. 1: 2 to 10 percent
2# additive: 0.5 to 8 percent
The matrix asphalt is domestic No. 70 matrix asphalt; the additive No. 1 is an organic acid with amino; the 2# additive is an aniline anti-cracking agent.
2. The cold region anti-aging asphalt as claimed in claim 1, wherein: the preparation and use modes of the cold region anti-aging asphalt are as follows:
firstly, heating matrix asphalt in an oven at 135 +/-5 ℃ to a flowing state; secondly, transferring the mixture into a constant-temperature oil bath kettle at 135 +/-5 ℃, adding the additive No. 1 while stirring after the temperature is constant, and manually stirring the mixture for 2-5 min by using a glass rod until the mixture is completely dissolved; thirdly, adding the 2# additive, and manually stirring for 5-10 min by using a glass rod to uniformly dissolve the two additives into the matrix asphalt; then, raising the temperature of the oil bath pot to 140 +/-5 ℃, and mechanically stirring for 30-45 min at the rotating speed of 2000-3000 r/min by using a high-torque electric stirrer; and finally, standing and maintaining at normal temperature for 5-20 min to obtain the anti-aging asphalt sample.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117030985A (en) * | 2023-08-14 | 2023-11-10 | 北京工业大学 | Method for measuring and calculating contribution rate of heat, oxygen and light to asphalt aging |
| CN117229185A (en) * | 2023-11-14 | 2023-12-15 | 北京工业大学 | Cream asphalt anti-aging agent synthesis and use method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109439200A (en) * | 2018-12-03 | 2019-03-08 | 江苏东道交通科技集团有限公司 | A kind of uncured coating of rubber asphalt and preparation method thereof |
| CN112029304A (en) * | 2020-09-15 | 2020-12-04 | 重庆市智翔铺道技术工程有限公司 | Polymer modified asphalt and preparation method thereof |
| CN113105669A (en) * | 2021-04-13 | 2021-07-13 | 北京工业大学 | Asphalt anti-aging agent for roads and use method thereof |
-
2021
- 2021-08-20 CN CN202110958592.8A patent/CN113755020A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109439200A (en) * | 2018-12-03 | 2019-03-08 | 江苏东道交通科技集团有限公司 | A kind of uncured coating of rubber asphalt and preparation method thereof |
| CN112029304A (en) * | 2020-09-15 | 2020-12-04 | 重庆市智翔铺道技术工程有限公司 | Polymer modified asphalt and preparation method thereof |
| CN113105669A (en) * | 2021-04-13 | 2021-07-13 | 北京工业大学 | Asphalt anti-aging agent for roads and use method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117030985A (en) * | 2023-08-14 | 2023-11-10 | 北京工业大学 | Method for measuring and calculating contribution rate of heat, oxygen and light to asphalt aging |
| CN117229185A (en) * | 2023-11-14 | 2023-12-15 | 北京工业大学 | Cream asphalt anti-aging agent synthesis and use method thereof |
| CN117229185B (en) * | 2023-11-14 | 2024-01-30 | 北京工业大学 | Cream asphalt anti-aging agent synthesis and use method thereof |
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Application publication date: 20211207 |