CN101634130A - Preparation method of epoxy asphalt road surface materials - Google Patents
Preparation method of epoxy asphalt road surface materials Download PDFInfo
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- CN101634130A CN101634130A CN200910034103A CN200910034103A CN101634130A CN 101634130 A CN101634130 A CN 101634130A CN 200910034103 A CN200910034103 A CN 200910034103A CN 200910034103 A CN200910034103 A CN 200910034103A CN 101634130 A CN101634130 A CN 101634130A
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Abstract
The invention relates to a preparation method of modified asphalt, in particular to modified asphalt which is used on the road surface, belonging to the technical field of chemical materials. The invention has the beneficial effects of easy operation, low cost, low energy consumption and short solidification time, thus shortening traffic closing time and being beneficial for rapid and smooth traffic. The epoxy asphalt road surface materials prepared by the method in the invention feature high elongation; the anti-fatigue life is 10 to 30 times of that of ordinary asphalt under the action of equal fatigue stress; the epoxy asphalt road surface materials have good deformation ability and durability, have dramatic effects in preventing tracking under high temperature, resisting cracks under low temperature and resisting water damage in the rainy season and have good anti-fatigue property.
Description
Technical field
The present invention relates to a kind of modified asphalt preparation method, especially the preparation method of road modified asphalt belongs to composite asphalt material technology field.
Background technology
Pitch is neither viscous liquid completely, non-again solid elastomer completely, but typical viscoelastic body.Pitch has thermoplasticity, and promptly at high temperature stickiness is occupied an leading position, and makes it show flowability; At low temperatures, elasticity is occupied an leading position, and makes it show resistance to flow.Therefore the road of asphalt paving is in summer high-temperature season, and rut appears in road surface easily under heavy load, and in cold season in winter, the road surface is prone to shrinkage crack.This reversible character has limited the asphalt applications scope greatly.As a result, must carry out modification, common thermoplasticity pitch is become thermosetting pitch pitch.
The research and development of modified bitumen and application are subjected to the attention of countries in the world.Modified bitumen not only has excellent performance, and its consumption is the 40%-60% of plain asphalt.In today that petroleum resources lack, the composite asphalt material of development of new is a far reaching job.Find through experimental study: epoxy resin can improve the high-temperature stability of pitch, can improve the black brittleness of pitch again, and cheap.The applicant retrieves discovery, the applying date is on April 28th, 2006, application number is 200610039988.8, the Chinese patent application that name is called " thermosetting epoxy asphalt materials for pavement and bridge and preparation method thereof " discloses a kind of epoxy bitumen material and its preparation method, this material by the epoxy resin of A component and B component by mass ratio 2: 1-8: 1 reaction obtains, wherein the raw material of A component need be used the modified bitumen of band carboxyl or anhydride group, aliphatic dibasic acid, dimeric dibasic acid or alkyd resins, fatty acid anhydride, curing accelerator, raw material is more, during preparation, need earlier the pitch among the component A to be carried out being warming up to 140-160 ℃ after the modification, add all the other components that are warming up to 140-160 ℃ again, form component A, mix with B component again and obtain product, step is more in the whole process of preparation, reaction time is long, especially the nitrogen that fills for preparing component A, vacuumize, steps such as mechanical dispersion, not only raw material type is many, and the reaction temperature height, and energy consumption is bigger; Because of its raw material contains aliphatic epoxy resin (most of be aqueous epoxy resins) after synthetic, the bituminous epoxy that causes making uses the back water stability poor, and explanation is not seen in the test of water stability, yet in this patent application.The one piece applying date similar with it is on April 22nd, 2008, application number is 200810023956.8, and name is called the same above plurality of raw materials of needs in " epoxy asphalt material for road-bridge and environment-friendly preparation method thereof thereof ", carries out loaded down with trivial details ground preparation technology, the cost height, energy consumption is big.
The modified bitumen of above-mentioned prior art is when pavement construction, because raw material type is many, preparation process is complicated, water stability is poor, and is therefore time-consuming, is difficult to satisfy the needs of modern road construction construction.
Summary of the invention
The present invention wants the technical solution problem to be: the shortcoming at above prior art exists proposes a kind of preparation process epoxy asphalt road surface materials preparation method simple, with low cost.
The preparation method of epoxy asphalt road surface materials of the present invention may further comprise the steps:
A. with the pitch heating of 20～80 weight portions, make its thawing;
B. the thinner of the organic acid anhydride curing compound of 2～20 weight portions and 13～60 weight portions is added in the pitch after melting and stirred 10～30 minutes, obtain component A, and be heated to 140～160 ℃;
C. with 10～50 parts by weight of epoxy resin as B component, be heated to 140～160 ℃;
D. mixing said ingredients A and B component, the ratio of its parts by weight is 2: 1～4: 1,100～150 ℃ stir down after, be incubated after 1～3 hour and cools off, promptly get epoxy asphalt road surface materials.
Method of the present invention can be sprayed within a certain period of time or brush on road surface or bridge floor steel plate as the bituminous epoxy bonding layer material, can also make epoxy asphalt concrete, as long as the steps d in the above step is changed into: with component A and B component 100～150 ℃ stir down after, admix by 6.4%～8.5% bitumen aggregate ratio and to gather materials, be incubated 30～60 minutes, promptly get epoxy asphalt concrete.
In the above-mentioned steps, used pitch is at least a in petroleum bitumen, oxidized asphalt, coal tar pitch, the lake asphalt.
Used organic acid anhydride curing compound is at least a in tetrabydrophthalic anhydride, hexahydrophthalic anhydride, methyl tetrahydrophthalic anhydride, methylhexahydrophthalic anhydride, methyl carbic anhydride, chlorendic anhydride, pyromellitic dianhydride, benzophenone tetracarboxylic dianhydride, trimellitic anhydride, poly-acetic anhydride, the poly-azelaic acid acid anhydride.
Used thinner is at least a in methyl-prop diluted acid butyl ester, pentyl acetate, phenol, cyclohexanone, phenyl glycidyl ether, cresylglycidylether, glycerine epoxy, diglycidyl ether, polyglycidyl ether, the ethylene glycol diglycidylether.
Used epoxy resin is at least a in bisphenol A epoxide resin, bisphenol F epoxy resin, bisphenol-A D epoxy resin, bisphenol-s epoxy resin, the resorcinol type epoxy.
The A component that the present invention will contain anhydride group obtains epoxy asphalt road surface materials with the B component that contains epoxy radicals through following curing reaction
The invention has the beneficial effects as follows: preparation modified bitumen simple to operate, cost is low, energy consumption is little, and because hardening time is short, has shortened the time that traffic is sealed, and it is unimpeded fast to help traffic.The elongation per unit length height of the epoxy asphalt road surface materials that makes by method of the present invention, under equal fatigue stress effect, its endurance life-span is 10～30 times of plain asphalt, have good deformability and durability, and to the anti-rut of high temperature, anti-low-temperature cracking seam, rainy season, anti-water damage had significant effect, and the fatigue performance excellence has superior road function.
The specific embodiment
Embodiment one
The preparation method's of present embodiment epoxy asphalt road surface materials step is as follows:
A) petroleum bitumen (U.S.'s shell) of 25 weight portions is put into reactor and be heated to 120 ℃, make its thawing;
B) phenyl glycidyl ether (Shanghai nation becomes chemical industry Co., Ltd) of the hexahydrophthalic anhydride (the chemical Co., Ltd of Vad, Jintan City dragon) of the tetrabydrophthalic anhydride of 1.2 weight portions (the chemical Co., Ltd of Vad, Jintan City dragon), 1.3 weight portions and 16 weight portions is added in the petroleum bitumen after the thawing and carry out high speed shear stirring 25 minutes, obtain component A, and be heated to 150 ℃;
C) with the bisphenol A epoxide resin of 15 weight portions (the red precious resin in Zhenjiang Co., Ltd E-44) as B component, is heated to 150 ℃,
D) above A component is mixed with B component, the ratio of its parts by weight is 2.9: 1, after stirring under 130 ℃, is incubated cooling after 2 hours, promptly gets epoxy asphalt road surface materials, and this material can be used as the tack coat of mating formation and uses, and specific performance sees Table 1.
Embodiment two
The preparation method's of present embodiment epoxy asphalt road surface materials step is as follows:
A) oxidized asphalt (U.S.'s shell) of 50 weight portions is put into reactor and be heated to 120 ℃, make its thawing;
B) cresylglycidylether (storehouse, Guangzhou Leech's industrial chemicals Co., Ltd) of trimellitic anhydride of 6 weight portions (the chemical Co., Ltd of Vad, Jintan City dragon) and 30 weight portions is added in the oxidized asphalt after melting and carry out high speed shear stirring 22 minutes, obtain component A, and be heated to 140 ℃;
C) (Xinhua Resin Factory, Shanghai E-51) as B component, is heated to 140 ℃ with the bisphenol A epoxide resin of 40 weight portions;
D) the A component is mixed with B component, the ratio of its parts by weight is 2.15: 1, after stirring under 110 ℃, is incubated cooling after 1.5 hours, promptly gets epoxy asphalt road surface materials, and this material can be used as the tack coat of mating formation and uses, and its performance sees Table 1.
Embodiment three
The preparation method's of present embodiment epoxy asphalt road surface materials step is as follows:
A) coal tar pitch (Jingmen petrochemical industry) of 60 weight portions is put into reactor and be heated to 120 ℃, make its thawing;
B) phenol (rising sun chemical industry Co., Ltd in the Nanjing) of tetrabydrophthalic anhydride of 9 weight portions (the chemical Co., Ltd of Vad, Jintan City dragon) and 35 weight portions is added in the coal tar pitch after melting and carry out high speed shear stirring 15 minutes, obtain component A, and be heated to 130 ℃;
C) with the resorcinol type epoxy (Xinhua Resin Factory, Shanghai) of the bisphenol F epoxy resin (Xinhua Resin Factory, Shanghai, the trade mark 6420) of 16 weight portions and 17 weight portions totally 33 parts by weight of epoxy resin be heated to 130 ℃ as B component;
D) component A is mixed with B component, the ratio of its parts by weight is 3.15: 1, after stirring under 140 ℃, is incubated cooling after 2.5 hours, promptly gets epoxy asphalt road surface materials, and this material can be used as the tack coat of mating formation and uses, and its performance sees Table 1.
Table 1 bituminous epoxy tack coat result of the test
Above data show that the epoxy asphalt road surface materials elongation per unit length average out to 237 that the present invention makes can show fabulous deformability.
Embodiment four
What present embodiment prepared is epoxy asphalt concrete, wherein the preparation method of epoxy asphalt road surface materials is identical with embodiment one, difference is to adopt lake asphalt (Hao Yin Co., Ltd, the Trinida lake asphalt), among the step D, component A and B component are mixed, after stirring under 130 ℃, admix the insulation of gathering materials by 6.4% bitumen aggregate ratio again and directly be paved on the road surface after 50 minutes.Used gathering materials is to make by the pavement construction standard in the present embodiment.Performance of prepared epoxy asphalt road surface materials own and corresponding epoxy asphalt concrete performance see Table 2-table 5.
Embodiment five
What present embodiment prepared is epoxy asphalt concrete, wherein the preparation method of epoxy asphalt road surface materials is identical with embodiment two, difference is: among the step D, component A and B component are mixed, after stirring under 110 ℃, admix by 7.2% bitumen aggregate ratio again and gather materials, be incubated and directly be paved on the road surface after 45 minutes.Performance of the epoxy asphalt road surface materials that makes own and corresponding epoxy asphalt concrete performance see Table 2-table 5.
Embodiment six
What present embodiment prepared is epoxy asphalt concrete, wherein the preparation method of epoxy asphalt road surface materials is identical with embodiment three, difference is: among the step D, component A and B component are mixed, after stirring under 140 ℃, admix by 8.3% bitumen aggregate ratio again and gather materials, be incubated and directly be paved on the road surface after 50 minutes.Performance of the epoxy asphalt road surface materials that makes own and corresponding epoxy asphalt concrete performance see Table 2-table 5.
Embodiment seven
What present embodiment prepared is epoxy asphalt concrete, and wherein the preparation method of epoxy asphalt road surface materials is as follows:
A) petroleum bitumen (U.S.'s shell) of 70 weight portions is put into reactor and be heated to 120 ℃, make its thawing;
B) with the poly-azelaic acid acid anhydride (mean molecule quantity 1700 of 8 weight portions, Vad, Jintan City chemical Co., Ltd of dragon), the poly-acetic anhydride (mean molecule quantity 1500 of 9 weight portions, the Cheng Delong of Jintan City chemistry Co., Ltd) and the polyglycidyl ether (prosperous Dehua, Yueyang worker Co., Ltd) of the diglycidyl ether (prosperous Dehua, Yueyang worker Co., Ltd) of 25 weight portions, 30 weight portions add in the petroleum bitumen after melting and carry out high speed shear stirring 30 minutes, obtain component A, and be heated to 150 ℃;
C) amount to 47 parts of epoxy resin as B component with the bisphenol-A D epoxy resin (Xinhua Resin Factory, Shanghai, the trade mark 6420) of 25 weight portions, the bisphenol-s epoxy resin (Dow Chemical Co., Ltd) of 22 weight portions, be heated to 150 ℃,
D) the A component is mixed with B component, the ratio of its parts by weight is 3.02: 1, after stirring under 130 ℃, admixes by 7.7% bitumen aggregate ratio and gathers materials, and is incubated and directly is paved on the road surface after 50 minutes.Performance of the epoxy asphalt road surface materials that makes own and corresponding epoxy asphalt concrete performance see Table 2-table 5.
Table 2 epoxy asphalt concrete result of the test
Table 3 wheel tracking test result
| Embodiment | Stability (KN) | Maximum distortion (mm) | Void content (%) | Residual stable |
| Four | ??54 | ??2.54 | ??0.98 | ??87 |
| Five | ??57.5 | ??2.63 | ??0.95 | ??89.4 |
| Six | ??59.8 | ??2.83 | ??1.07 | ??90.3 |
| Seven | ??60.9 | ??2.72 | ??1.32 | ??94 |
| ??SMA | ??4.5 | ??5.32 | ??3.34 | ??75.6 |
Table 4 water logging Marshall Test (48h)
Table 5 oil immersion test result
Above data show that its Marshall stability of the epoxy asphalt concrete that the present invention makes surpasses 68000N, and the concrete stability of plain asphalt only is 8000～10000N, differs 6～8 times.Under equal fatigue stress effect, its endurance life-span is 10～40 times of plain asphalt, and has good caking property and durability.This epoxy asphalt concrete can place water for a long time even place fuel oil to soak does not all have obviously corrosion, illustrate that this epoxy asphalt road surface materials caking property, stability, durability and corrosion resistance are all good, its water soaking test has illustrated that also this material there is no the worry of water stability difference aspect with respect to existing epoxy asphalt road surface materials.
Embodiment eight
The preparation method of present embodiment epoxy asphalt road surface materials is identical with embodiment one, and the difference part is: adopt the methyl tetrahydrophthalic anhydride (the chemical Co., Ltd of Vad, Jintan City dragon) of 5 weight portions and the butyl methacrylate (Shanghai nation becomes chemical industry Co., Ltd) of 20 weight portions among the step b.The experimental result of prepared epoxy asphalt road surface materials and embodiment one roughly the same repeat no more herein.
Embodiment nine
The preparation method of present embodiment epoxy asphalt road surface materials is identical with embodiment two, and the difference part is: the tetrabydrophthalic anhydride (the chemical Co., Ltd of Vad, Jintan City dragon) and the chlorendic anhydride (the chemical Co., Ltd of Vad, Jintan City dragon) of 1.2 weight portions and the cyclohexanone (prosperous Dehua, Yueyang worker Co., Ltd) of 16 weight portions that adopt 2 weight portions among the step b.The experimental result of prepared epoxy asphalt road surface materials and embodiment two roughly the same repeat no more herein.
Embodiment ten
The preparation method of present embodiment epoxy asphalt road surface materials is identical with embodiment three, and the difference part is: the methylhexahydrophthalic anhydride (the chemical Co., Ltd of Vad, Jintan City dragon) and the benzophenone tetracarboxylic dianhydride (the chemical Co., Ltd of Vad, Jintan City dragon) of 4 weight portions and the pentyl acetate (prosperous Dehua, Yueyang worker Co., Ltd) of 31 weight portions that adopt 9 weight portions among the step b.The experimental result of prepared epoxy asphalt road surface materials and embodiment three roughly the same repeat no more herein.
Embodiment 11
The preparation method of present embodiment epoxy asphalt road surface materials is identical with embodiment four, and the difference part is: adopt the methyl carbic anhydride (the chemical Co., Ltd of Vad, Jintan City dragon) of 4 weight portions and the glycerine epoxy (prosperous Dehua, Yueyang worker Co., Ltd) of 26 weight portions among the step b.Performance of prepared epoxy asphalt road surface materials own and corresponding epoxy asphalt concrete performance and embodiment four roughly the same repeat no more herein.
Embodiment 12
The preparation method of present embodiment epoxy asphalt road surface materials is identical with embodiment five, and the difference part is: adopt the pyromellitic dianhydride (the chemical Co., Ltd of Vad, Jintan City dragon) of 17 weight portions and the ethylene glycol diglycidylether (prosperous Dehua, Yueyang worker Co., Ltd) of 50 weight portions among the step b.Performance of prepared epoxy asphalt road surface materials own and corresponding epoxy asphalt concrete performance and embodiment five roughly the same repeat no more herein.
In addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of requirement of the present invention.
Claims (6)
1. the preparation method of an epoxy asphalt road surface materials may further comprise the steps:
A. with the pitch heating of 20～80 weight portions, make its thawing;
B. the thinner of the organic acid anhydride curing compound of 2～20 weight portions and 13～60 weight portions is added in the pitch after melting and stirred 10～30 minutes, obtain component A, and be heated to 140～160 ℃;
C. with 10～50 parts by weight of epoxy resin as B component, be heated to 140～160 ℃;
D. mixing said ingredients A and B component, the ratio of its parts by weight is 2: 1～4: 1,100～150 ℃ stir down after, be incubated after 1～3 hour and cools off, promptly get epoxy asphalt road surface materials.
2. the preparation method of an epoxy asphalt road surface materials may further comprise the steps:
A. with the pitch heating of 20～80 weight portions, make its thawing;
B. the thinner of the organic acid anhydride curing compound of 2～20 weight portions and 13～60 weight portions is added in the pitch after melting and stirred 10～30 minutes, obtain component A, and be heated to 140～160 ℃;
C. with 10～50 parts by weight of epoxy resin as B component, be heated to 140～160 ℃;
D. with component A and B component 100～150 ℃ stir down after, admix by 6.4%～8.5% bitumen aggregate ratio and to gather materials, be incubated 30～60 minutes, promptly get epoxy asphalt concrete.
3. according to the preparation method of claim 1 or 2 described epoxy asphalt road surface materials, it is characterized in that: described pitch is at least a in petroleum bitumen, oxidized asphalt, coal tar pitch, the lake asphalt.
4. according to the preparation method of the described epoxy asphalt road surface materials of claim 3, it is characterized in that: described organic acid anhydride curing compound is at least a in tetrabydrophthalic anhydride, hexahydrophthalic anhydride, methyl tetrahydrophthalic anhydride, methylhexahydrophthalic anhydride, methyl carbic anhydride, chlorendic anhydride, pyromellitic dianhydride, benzophenone tetracarboxylic dianhydride, trimellitic anhydride, poly-acetic anhydride, the poly-azelaic acid acid anhydride.
5. according to the preparation method of the described epoxy asphalt road surface materials of claim 4, it is characterized in that: described thinner is at least a in butyl methacrylate, pentyl acetate, phenol, cyclohexanone, phenyl glycidyl ether, cresylglycidylether, glycerine epoxy, diglycidyl ether, polyglycidyl ether, the ethylene glycol diglycidylether.
6. according to the preparation method of the described epoxy asphalt road surface materials of claim 5, it is characterized in that: described epoxy resin is at least a in bisphenol A epoxide resin, bisphenol F epoxy resin, bisphenol-A D epoxy resin, bisphenol-s epoxy resin, the resorcinol type epoxy.
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| CN101921460A (en) * | 2010-08-06 | 2010-12-22 | 江苏省交通科学研究院股份有限公司 | Epoxy asphalt deck crack repairing agent capable of being cured at normal temperature |
| CN102134435A (en) * | 2011-04-02 | 2011-07-27 | 长安大学 | Sun-heat reflecting coating used for bituminous pavement and preparation method thereof |
| CN102382549A (en) * | 2011-08-26 | 2012-03-21 | 长安大学 | Colored solar heat reflecting coating for bituminous road surface |
| CN102703103A (en) * | 2012-06-20 | 2012-10-03 | 东华大学 | Method for preparing environment-friendly waterproof plant asphalt by using plant raw materials |
| CN102838876A (en) * | 2012-09-27 | 2012-12-26 | 南通东南公路工程有限公司 | Epoxy asphalt composition for roads and bridges, and preparation method thereof |
| CN103351630A (en) * | 2013-07-09 | 2013-10-16 | 杨林江 | Epoxy resin-modified rubber asphalt |
| CN103788672A (en) * | 2014-01-21 | 2014-05-14 | 南通东南公路工程有限公司 | Heat-resistant waterproof epoxy asphalt pavement material and preparation method thereof |
| CN104845392A (en) * | 2015-04-29 | 2015-08-19 | 上海市政工程设计研究总院（集团）有限公司 | Foam epoxy asphalt material |
| CN104861665A (en) * | 2015-04-29 | 2015-08-26 | 上海市政工程设计研究总院（集团）有限公司 | Production method of foamed epoxy asphalt materials |
| CN107022941A (en) * | 2017-03-31 | 2017-08-08 | 河北长大交通科技有限公司 | The preparation method of rubber-asphalt mixture |
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| CN109680508A (en) * | 2018-12-29 | 2019-04-26 | 河南东方雨虹建筑材料有限公司 | A kind of high-polymer modified pitch and preparation method thereof and polymer modified bituminous waterproof sheet material |
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| CN101921460A (en) * | 2010-08-06 | 2010-12-22 | 江苏省交通科学研究院股份有限公司 | Epoxy asphalt deck crack repairing agent capable of being cured at normal temperature |
| CN102134435A (en) * | 2011-04-02 | 2011-07-27 | 长安大学 | Sun-heat reflecting coating used for bituminous pavement and preparation method thereof |
| CN102382549A (en) * | 2011-08-26 | 2012-03-21 | 长安大学 | Colored solar heat reflecting coating for bituminous road surface |
| CN102703103A (en) * | 2012-06-20 | 2012-10-03 | 东华大学 | Method for preparing environment-friendly waterproof plant asphalt by using plant raw materials |
| CN102838876A (en) * | 2012-09-27 | 2012-12-26 | 南通东南公路工程有限公司 | Epoxy asphalt composition for roads and bridges, and preparation method thereof |
| CN103351630A (en) * | 2013-07-09 | 2013-10-16 | 杨林江 | Epoxy resin-modified rubber asphalt |
| CN103351630B (en) * | 2013-07-09 | 2016-04-13 | 杨林江 | A kind of epoxy resin modification rubber asphalt |
| CN103788672B (en) * | 2014-01-21 | 2016-03-02 | 南通东南公路工程有限公司 | Epoxy asphalt road surface materials of a kind of heat-resisting waterproof and preparation method thereof |
| CN103788672A (en) * | 2014-01-21 | 2014-05-14 | 南通东南公路工程有限公司 | Heat-resistant waterproof epoxy asphalt pavement material and preparation method thereof |
| CN104845392A (en) * | 2015-04-29 | 2015-08-19 | 上海市政工程设计研究总院（集团）有限公司 | Foam epoxy asphalt material |
| CN104861665A (en) * | 2015-04-29 | 2015-08-26 | 上海市政工程设计研究总院（集团）有限公司 | Production method of foamed epoxy asphalt materials |
| CN104861665B (en) * | 2015-04-29 | 2017-11-14 | 上海市政工程设计研究总院（集团）有限公司 | A kind of preparation method for the epoxy bitumen material that foams |
| CN104845392B (en) * | 2015-04-29 | 2017-11-14 | 上海市政工程设计研究总院（集团）有限公司 | One kind foaming epoxy bitumen material |
| CN107022941A (en) * | 2017-03-31 | 2017-08-08 | 河北长大交通科技有限公司 | The preparation method of rubber-asphalt mixture |
| CN108795070A (en) * | 2018-05-24 | 2018-11-13 | 江蔓青 | A kind of high-performance environment-friendly asphalt pavement material |
| CN109680508A (en) * | 2018-12-29 | 2019-04-26 | 河南东方雨虹建筑材料有限公司 | A kind of high-polymer modified pitch and preparation method thereof and polymer modified bituminous waterproof sheet material |
| CN110591397A (en) * | 2019-09-17 | 2019-12-20 | 云南畅坦科技有限公司 | High-strength toughened fast-curing chemically modified resin asphalt for permeable pavement and preparation method thereof |
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