CN113845781A - Rosin resin composite modified asphalt and preparation method thereof - Google Patents
Rosin resin composite modified asphalt and preparation method thereof Download PDFInfo
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- CN113845781A CN113845781A CN202111322503.7A CN202111322503A CN113845781A CN 113845781 A CN113845781 A CN 113845781A CN 202111322503 A CN202111322503 A CN 202111322503A CN 113845781 A CN113845781 A CN 113845781A
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- asphalt
- rosin
- composite modified
- resin composite
- modified asphalt
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- 239000010426 asphalt Substances 0.000 title claims abstract description 113
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 title claims abstract description 52
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 title claims abstract description 52
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 title claims abstract description 52
- 239000000805 composite resin Substances 0.000 title claims abstract description 33
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000003607 modifier Substances 0.000 claims abstract description 28
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical class [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000011159 matrix material Substances 0.000 claims abstract description 23
- 239000003381 stabilizer Substances 0.000 claims abstract description 17
- 238000003756 stirring Methods 0.000 claims description 28
- 238000010008 shearing Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 10
- 239000005011 phenolic resin Substances 0.000 claims description 8
- 238000010907 mechanical stirring Methods 0.000 claims description 7
- 150000002989 phenols Chemical class 0.000 claims description 5
- 239000005062 Polybutadiene Substances 0.000 claims description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 3
- 230000002378 acidificating effect Effects 0.000 claims description 3
- 229920005549 butyl rubber Polymers 0.000 claims description 3
- 229920002857 polybutadiene Polymers 0.000 claims description 3
- 125000005575 polycyclic aromatic hydrocarbon group Chemical group 0.000 claims description 3
- 229910052717 sulfur Inorganic materials 0.000 claims description 3
- 239000011593 sulfur Substances 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 10
- 239000002131 composite material Substances 0.000 abstract description 8
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 8
- 239000000047 product Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 235000019738 Limestone Nutrition 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000006028 limestone Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- -1 phenolic aldehyde Chemical class 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses rosin resin composite modified asphalt and a preparation method thereof, wherein the rosin resin composite modified asphalt comprises the following components in parts by mass: 200-300 parts of matrix asphalt, 6-18 parts of SBS modifier, 8-20 parts of extract oil, 1-5 parts of asphalt stabilizer and 5-20 parts of 210 rosin modified phenolic resin. According to the invention, the 210 rosin modified phenolic resin with a specific proportion is introduced, so that the adhesiveness between the composite modified asphalt and the aggregate is effectively improved, the temperature resistance and deformation resistance are improved, the problem of water damage of the cold-mixed cold-paved wearing layer in service is solved, the durability of the wearing layer is improved, and the service life of the pavement is prolonged.
Description
Technical Field
The invention relates to the technical field of road pavement materials, in particular to rosin resin composite modified asphalt and a preparation method thereof.
Background
At present, with the development of road transportation industry in China, the proportion of the total mileage of the asphalt pavement to high roads is also increased year by year, which reaches about 90%, the asphalt pavement has better pavement performance and safety performance compared with the traditional cement concrete pavement, but the asphalt pavement is affected by environmental factors such as driving load, rain, temperature, ultraviolet rays and the like in the long-term service process, so that diseases such as cracks, peeling, slippage and the like can occur.
It is shown in the relevant literature that 70% of the diseases occurring during early service of asphalt pavements are caused by water damage, which has become a leading factor affecting the reduction of the life of asphalt pavements. The water damage on the asphalt pavement has two action modes, one is that water is adsorbed on the asphalt surface and then permeates into the asphalt to reduce the adhesiveness of the asphalt, so that the water penetrates through an asphalt membrane and enters the mixture to generate damage; the other is that the interface between the asphalt and the aggregate is subjected to shear failure under the action of the driving load of the asphalt mixture, so that fine cracks appear, then moisture enters the cracks, the adhesion between the asphalt and the aggregate is reduced, and the asphalt is peeled off from the surface of the aggregate. Therefore, the adhesion between the asphalt and the aggregate is an important factor for resisting water damage of the asphalt pavement, so that the improvement of the adhesion between the asphalt and the aggregate is the key for ensuring the service quality and the durability of the asphalt pavement. Therefore, a new solution is needed to solve the problem of poor resistance to water damage of the cold-mix cold-paving wearing layer in the prior art.
Disclosure of Invention
The invention aims to provide rosin resin composite modified asphalt and a preparation method thereof, which are used for improving the adhesion between SBS modified asphalt and aggregate and solving the problem of poor water damage resistance of a cold-mixing cold-paving wearing layer in the prior art.
In order to solve the above technical problem, a first solution provided by the present invention is: the rosin resin composite modified asphalt comprises the following components in parts by weight: 200-300 parts of matrix asphalt, 6-18 parts of SBS modifier, 8-20 parts of extract oil, 1-5 parts of asphalt stabilizer and 5-20 parts of 210 rosin modified phenolic resin.
Preferably, the SBS modifiers are linear structure modifiers.
Preferably, the extract oil is polycyclic aromatic hydrocarbon material.
Preferably, the asphalt stabilizer includes sulfur, butyl rubber, and butadiene rubber.
Preferably, the 210 rosin-modified phenol resin is an acidic phenol resin.
In order to solve the above technical problem, a second solution provided by the present invention is: a preparation method of rosin resin composite modified asphalt, which is used for preparing the rosin resin composite modified asphalt in the first solution, comprises the following steps:
(1) weighing the matrix asphalt, the SBS modifier, the extract oil, the asphalt stabilizer and the 210 rosin modified phenolic resin according to the proportion;
(2) adding an SBS modifier into preheated matrix asphalt, shearing and stirring, wherein the stirring temperature is 160-180 ℃, and obtaining a preformed product A;
(3) adding the extract oil into the preformed product A for shearing and stirring, wherein the stirring temperature is 160-180 ℃, and obtaining a preformed product B;
(4) adding the asphalt stabilizer into the preformed product B, and mechanically stirring at 160-180 ℃ to obtain a preformed product C;
(5) and adding 210 rosin modified phenolic resin into the preform C, and mechanically stirring at 160-180 ℃ to obtain the rosin resin composite modified asphalt.
Preferably, in the step (2), the shearing and stirring time is 30-60 min.
Preferably, in the step (3), the shearing and stirring time is 50-80 min.
Preferably, in the step (4), the mechanical stirring time is 80-100 min.
Preferably, in the step (5), the mechanical stirring time is 20-40 min, and after the mechanical stirring is completed, the development is carried out for 30-50 min at the temperature of 160-180 ℃, so as to obtain the rosin resin composite modified asphalt.
The invention has the beneficial effects that: different from the situation of the prior art, the rosin resin composite modified asphalt and the preparation method thereof provided by the invention have the advantages that the 210 rosin modified phenolic resin with a specific proportion is introduced, so that the adhesion between the composite modified asphalt and aggregates is effectively improved, the temperature resistance and deformation resistance are improved, the problem of water damage of a cold-mixed cold-paved wearing layer in service is solved, the durability of the wearing layer is improved, and the service life of a pavement is further prolonged.
Drawings
FIG. 1 is a process flow diagram of one embodiment of the method for preparing rosin resin composite modified asphalt according to the present invention;
FIG. 2 is a graph of the unrecovered creep compliance at 0.1kPa for samples of examples 1 to 3 of the present invention and comparative example 1;
FIG. 3 is a graph of the unrecovered creep compliance at 3.2kPa for the samples of examples 1 to 3 of the present invention and comparative example 1.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
For the first solution provided by the invention, the rosin resin composite modified asphalt comprises the following components in parts by mass: 200-300 parts of matrix asphalt, 6-18 parts of SBS modifier, 8-20 parts of extract oil, 1-5 parts of asphalt stabilizer and 5-20 parts of 210 rosin modified phenolic resin.
In this embodiment, the base asphalt is 70# traffic road petroleum asphalt, the SBS modifier is a modifier with a linear structure, the extracted oil is a polycyclic aromatic hydrocarbon substance, the asphalt stabilizer comprises sulfur, butyl rubber and butadiene rubber, and the 210 rosin-modified phenolic resin is an acidic phenolic resin.
Referring to fig. 1, the method for preparing the rosin resin composite modified asphalt according to the second solution of the present invention is used for preparing the rosin resin composite modified asphalt according to the first solution, and comprises the following steps:
(1) and weighing the matrix asphalt, the SBS modifier, the extract oil, the asphalt stabilizer and the 210 rosin modified phenolic resin according to the mixture ratio.
(2) And adding the SBS modifier into the preheated matrix asphalt, and shearing and stirring at the stirring temperature of 160-180 ℃ for 30-60 min at the stirring speed of over 1000rpm to obtain a preform A.
(3) And adding the extract oil into the preform A for shearing and stirring, wherein the stirring temperature is 160-180 ℃, the shearing and stirring time is 50-80 min, and the stirring speed is more than 1000rpm, so as to obtain a preform B.
(4) And adding the asphalt stabilizer into the preform B, and mechanically stirring at 160-180 ℃ for 80-100 min at a stirring speed of over 1000rpm to obtain a preform C.
(5) Adding 210 rosin modified phenolic resin into the preform C, and mechanically stirring at 160-180 ℃ for 20-40 min at a stirring speed of over 1000 rpm; after the mechanical stirring is finished, the development is carried out for 30-50 min at the temperature of 160-180 ℃, and the rosin resin composite modified asphalt is obtained.
Further, the mechanism of the rosin resin composite modified asphalt and the preparation method thereof is explained as follows:
a. the SBS modifier in the components can improve the high-temperature performance of the matrix asphalt, and the matrix asphalt and the SBS modifier are thermodynamically incompatible systems, so that the matrix asphalt and the SBS modifier do not generate chemical reaction when being blended, and the SBS modifier is easy to generate heterogeneous phenomena such as agglomeration, drifting, sedimentation and the like when being mixed with the matrix asphalt, so that the shearing and stirring time needs to be strictly controlled, and the SBS modifier is prevented from being agglomerated in the matrix asphalt due to overlong stirring time.
b. The extract oil in the components has the function of promoting the SBS modifier to be fully dispersed in the matrix asphalt, and the asphalt stabilizer has the function of promoting the SBS modifier to be crosslinked with the matrix asphalt under the condition of proper temperature; the method comprises the steps of adding extract oil after mixing an SBS modifier with matrix asphalt for a short time, improving the dispersing capacity of the SBS modifier in the matrix asphalt, then adding an asphalt stabilizer, and respectively crosslinking active free radicals generated by the asphalt stabilizer with an SBS polymer molecular chain and an asphalt active functional group to promote the matrix asphalt and the SBS modifier to form more stable colloid.
c. According to the molecular orientation theory, the active functional groups contained in the 210 rosin modified phenolic resin can improve the surface polar molecular rate of the composite modified asphalt and the aggregate, so that the composite modified asphalt and the aggregate are firstly adsorbed to form a force field, and the adhesion between the composite modified asphalt and the aggregate is improved; when the composite modified asphalt is prepared, 210 rosin modified phenolic resin is added after the matrix asphalt and the SBS modifier form stable colloid, so that the temperature resistance and the deformation resistance of the composite modified asphalt and the aggregate after mixing can be simultaneously improved.
The performance and effect of the rosin resin composite modified asphalt are analyzed by specific examples.
The method comprises the following steps of setting five groups of experiments of examples 1-3 and comparative examples 1-2, wherein the five groups of experiment raw materials also comprise base asphalt with the same mass, and the base asphalt comprises 3% of SBS modifier, 4.5% of extract oil and 0.1% of asphalt stabilizer relative to the mass of the base asphalt; except that 210 rosin-modified phenolic resin is contained in a different proportion. The 210 rosin-modified phenol resin contained in examples 1 to 3 was 2%, 4% and 6% by mass of the matrix pitch, respectively, whereas the 210 rosin-modified phenol resin was not contained in comparative example 1 and the 210 rosin-modified phenol resin was contained in comparative example 2 and 10% by mass of the matrix pitch. Five groups of experimental samples were prepared by the same preparation method as described above, and the obtained samples were subjected to performance tests, using diabase and limestone as aggregates respectively in the asphalt adhesion tests, and the results are shown in table 1.
TABLE 1
In addition, examples 1 to 3 and comparative example 1 were subjected to the test of the non-recovered creep compliance at different temperatures as shown in FIG. 2 and FIG. 3, respectively, in which FIG. 2 is a non-recovered creep compliance curve of the sample at 0.1kPa, and FIG. 3 is a non-recovered creep compliance curve of the sample at 3.2 kPa. By combining the data in table 1, fig. 2 and fig. 3, it can be seen that, as the content of the 210 rosin-modified phenolic resin increases, the adhesiveness of the modified asphalt sample to diabase and limestone increases, the softening point of the modified asphalt increases, the penetration degree decreases, and the ductility remains substantially unchanged; the deformation resistance of the asphalt is also increased, and in an unrecovered creep compliance curve under 3.2kPa, when the content of 210 rosin modified phenolic resin is 4%, the permanent deformation resistance is obviously improved compared with that of comparative example 1; after the addition of the 210 rosin modified phenolic resin is continuously increased to 6%, the performance of the modified phenolic resin is not greatly improved, and the performance of the modified phenolic resin meets the technical standard of modified asphalt in the technical specification of asphalt pavement construction of Chinese highways; when the content of the 210 rosin modified phenolic resin is increased to the level of the comparative example 2, the content is beyond the range of the proportion defined by the invention, the adhesion of the prepared modified asphalt sample to diabase and limestone is slightly reduced, and the effect is not as good as that of the samples in the examples 1-3. By combining the test effects of the asphalt and analyzing from the cost perspective, the optimum mixing amount of the 210 rosin phenolic aldehyde modified resin modified asphalt is 4%.
Different from the situation of the prior art, the rosin resin composite modified asphalt and the preparation method thereof provided by the invention have the advantages that the 210 rosin modified phenolic resin with a specific proportion is introduced, so that the adhesion between the composite modified asphalt and aggregates is effectively improved, the temperature resistance and deformation resistance are improved, the problem of water damage of a cold-mixed cold-paved wearing layer in service is solved, the durability of the wearing layer is improved, and the service life of a pavement is further prolonged.
It should be noted that the above embodiments belong to the same inventive concept, and the description of each embodiment has a different emphasis, and reference may be made to the description in other embodiments where the description in individual embodiments is not detailed.
The above-mentioned embodiments only express the embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The rosin resin composite modified asphalt is characterized by comprising the following components in parts by mass: 200-300 parts of matrix asphalt, 6-18 parts of SBS modifier, 8-20 parts of extract oil, 1-5 parts of asphalt stabilizer and 5-20 parts of 210 rosin modified phenolic resin.
2. The rosin resin composite modified asphalt according to claim 1, wherein the SBS modifier is a linear modifier.
3. The rosin resin composite modified asphalt according to claim 1, wherein the extract oil is polycyclic aromatic hydrocarbon.
4. The rosin resin composite modified asphalt as claimed in claim 1, wherein the asphalt stabilizer comprises sulfur, butyl rubber and butadiene rubber.
5. The rosin resin composite modified asphalt according to claim 1, wherein the 210 rosin-modified phenol resin is an acidic phenol resin.
6. A preparation method of the rosin resin composite modified asphalt as described in any one of claims 1 to 5, characterized by comprising the following steps:
(1) weighing the matrix asphalt, the SBS modifier, the extract oil, the asphalt stabilizer and the 210 rosin modified phenolic resin according to the proportion;
(2) adding the SBS modifier into the preheated matrix asphalt, and shearing and stirring at 160-180 ℃ to obtain a preformed product A;
(3) adding the extract oil into the preformed product A for shearing and stirring, wherein the stirring temperature is 160-180 ℃, and obtaining a preformed product B;
(4) adding the asphalt stabilizer into the preformed product B, and mechanically stirring at 160-180 ℃ to obtain a preformed product C;
(5) and adding the 210 rosin modified phenolic resin into the preform C, and mechanically stirring at 160-180 ℃ to obtain the rosin resin composite modified asphalt.
7. The method for preparing the rosin resin composite modified asphalt according to claim 6, wherein in the step (2), the shearing and stirring time is 30-60 min.
8. The method for preparing the rosin resin composite modified asphalt according to claim 6, wherein in the step (3), the shearing and stirring time is 50-80 min.
9. The method for preparing the rosin resin composite modified asphalt according to claim 6, wherein in the step (4), the mechanical stirring time is 80-100 min.
10. The method for preparing the rosin resin composite modified asphalt according to claim 6, wherein in the step (5), the mechanical stirring time is 20-40 min, and after the mechanical stirring is completed, the rosin resin composite modified asphalt is developed for 30-50 min at 160-180 ℃ to obtain the rosin resin composite modified asphalt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111322503.7A CN113845781A (en) | 2021-11-09 | 2021-11-09 | Rosin resin composite modified asphalt and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111322503.7A CN113845781A (en) | 2021-11-09 | 2021-11-09 | Rosin resin composite modified asphalt and preparation method thereof |
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| CN113845781A true CN113845781A (en) | 2021-12-28 |
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| CN202111322503.7A Pending CN113845781A (en) | 2021-11-09 | 2021-11-09 | Rosin resin composite modified asphalt and preparation method thereof |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112608607A (en) * | 2020-12-04 | 2021-04-06 | 中路交科科技股份有限公司 | High-strength modified asphalt and preparation method thereof |
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- 2021-11-09 CN CN202111322503.7A patent/CN113845781A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112608607A (en) * | 2020-12-04 | 2021-04-06 | 中路交科科技股份有限公司 | High-strength modified asphalt and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 晏明等: ""松香树脂对SBS改性沥青的性能影响"", 《武汉理工大学学报（交通科学与工程版）》 * |
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Application publication date: 20211228 |