CN103664061B - A kind of rollable asphalt, Preparation Method And The Use - Google Patents
A kind of rollable asphalt, Preparation Method And The Use Download PDFInfo
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Abstract
The application provides a kind of rollable asphalt, Preparation Method And The Use, belongs to road engineering technical field.The rollable asphalt of the application comprises modifying asphalt and mineral aggregate, and based on the total mass of described compound, the mass percent of described modifying asphalt is 5-15%, preferred 8-10%, and the mass percent of described mineral aggregate is 85-95%, preferred 90-92%; Wherein, described modifying asphalt comprises petroleum pitch and additive, and based on the total mass of described modifying asphalt, the mass percent of described petroleum pitch is 60-95%, preferred 80-92%, and the mass percent of described additive is 5-40%, preferred 8-20%.Described asphalt is prefabricated in the factory into rollable bituminous pavement, laying installation at the scene, can carry out reparation or the deck paving on road surface fast, reducing the disadvantageous effect of constructing and bringing to surrounding environment and resident during construction as spread out carpet.
Description
Technical field
The application belongs to road engineering technical field, especially relates to a kind of prefabricated rollable asphalt being applicable to deck paving and road engineering maintenance.
The application also relates to preparation method and the purposes of described rollable asphalt.
Background technology
In road engineering, more than 95% adopts bituminous pavement, and the work-ing life of bituminous pavement was at about 15 years, due to reasons such as traffic loadings, and repairing with regard to needs for 3 ~ 5 years usually after the use that is open to traffic.Traditional HIGHWAY MAINTENANCE method is the maintenance of " belly breaking " formula, and servicing time is long, cost is high, has a strong impact on road traffic, increases the weight of the chocking-up degree of road, affects trip and the safety of people.
Prefabrication-in-site installation engineering method is the important development trend of civil structure operating technique.In pavement engineering field, applying more is block pavement technology, as adopted the road surface pavement such as prefabricated coagulating cement soil block, the rectangular slab of stone, block stone and brick.
The prefabricated Installation Technology of bituminous pavement due to difficulty large, therefore correlative study is both at home and abroad little.Holland proposes new thinking in modularization bituminous pavement pavement technique field, namely prefabricated flexibility roll up the bituminous pavement pave-load layer put, then lay installation as spread out carpet at the scene during construction, thus complete construction fast and rapid open to traffic.
Mix with the heat in traditional asphalt pavement maintenance process, transport, roll and compare with processes such as coolings, realize the ready coating reparation on road surface and rapid open to traffic, alleviate the traffic jam that construction operation causes, shorten the time of road closed, reducing the disadvantageous effect that pavement maintenance brings to surrounding environment and workmen, is the direction of concentrating research from now on.
Summary of the invention
the problem that invention will solve
The object of the application is to provide a kind of rollable asphalt, this compound is prefabricated in the factory into rollable bituminous pavement, installation is laid as spread out carpet at the scene during construction, reparation or the deck paving on road surface can be carried out fast, reduce the disadvantageous effect of constructing and bringing to surrounding environment and resident.Another object of the application is the preparation method and the purposes that provide described rollable asphalt.
for the scheme of dealing with problems
The application provides a kind of rollable asphalt, is characterised in that, described compound comprises modifying asphalt and mineral aggregate, based on the total mass of described compound, the mass percent of described modifying asphalt is 5-15%, preferred 8-10%, the mass percent of described mineral aggregate is 85-95%, preferred 90-92%; Wherein, described modifying asphalt comprises petroleum pitch and additive, and based on the total mass of described modifying asphalt, the mass percent of described petroleum pitch is 60-95%, preferred 80-92%, and the mass percent of described additive is 5-40%, preferred 8-20%.
Rollable asphalt according to the application, is characterised in that, described mineral aggregate comprises the mixture that particle diameter is the mineral aggregate of 13.2-16mm, 4.75-9.5mm, 0.15-2.36mm and 0-0.075mm; Based on the total mass of the mixture of described mineral aggregate, described particle diameter is that the mass percent of the mineral aggregate of 13.2-16mm, 4.75-9.5mm, 0.15-2.36mm and 0-0.075mm is respectively 0-15%, 15-50%, 20-80%, 5-25%.
Rollable asphalt according to the application, be characterised in that, described additive comprises thermoplastic elastomer and flow ability modifying agent, based on the total mass of described additive, the mass percent of described thermoplastic elastomer is 28-70%, and the mass percent of described flow ability modifying agent is 30-72%.
Rollable asphalt according to the application, is characterised in that, described thermoplastic elastomer is styrene-butadiene-styrene elastomerics and the elastomeric mixture of ethylene-octene copolymer.
Rollable asphalt according to the application, is characterised in that, the elastomeric content of described ethylene-octene copolymer is 18-45 quality %, based on described styrene-butadiene-styrene elastomerics.
Rollable asphalt according to the application, be characterised in that, described flow ability modifying agent comprises resin, wax and tenderizer, the content of wherein said resin is 25-55 quality %, the content of described wax is 4-12 quality %, the content of described tenderizer is 8-30 quality %, based on described thermoplastic elastomer.
Rollable asphalt according to the application, is characterised in that, described resin is C 5 petroleum resin, and described tenderizer is naphthenic oil.
The application also provides a kind of preparation method of the rollable asphalt according to the application, and be characterised in that, the method comprises: by additive and aggregate blending; Again by the mixture after mix and petroleum pitch mix; Again by the mixture that obtains after last mix step and filler mix, obtain rollable asphalt, described in gather materials for particle diameter is greater than the mineral aggregate of 0.075mm, described filler is the mineral aggregate of particle diameter at below 0.075mm.
The preparation method of the rollable asphalt according to the application, is characterised in that, the temperature of described additive and aggregate blending is 160-210 DEG C, and the time of mix is 20-120 second; The temperature of the mixture after described mix and petroleum pitch mix is 160-210 DEG C, and the time of mix is 20-120 second; The mixture obtained after described last mix step and the temperature of filler mix are 160-210 DEG C, and the time of mix is 20-120 second.
The application also provides the preparation method of another kind of rollable asphalt according to the application, and be characterised in that, the method comprises: petroleum pitch and additive mix are obtained modifying asphalt; Again by modifying asphalt and aggregate blending; Again by the mixture that obtains after last mix step and filler mix, obtain rollable asphalt, described in gather materials for particle diameter is greater than the mineral aggregate of 0.075mm, described filler is the mineral aggregate of particle diameter at below 0.075mm.
The application also provides a kind of preparation method of the modifying asphalt according to the application, it is characterized in that, be first 60-95% by the mass percent of the total mass based on described modifying asphalt, the petroleum pitch of preferred 80-92% is heated to softening flowing, the mass percent added again based on the total mass of described modifying asphalt is 5-40%, the additive of preferred 8-20%, controls temperature between 150-190 DEG C, is 3000-7000r/min down cut 20-40 minute with high-speed shearing machine in shearing rate; Modifying asphalt after shearing is put into baking oven, and temperature controls between 150-190 DEG C, grows and obtains modifying asphalt after 20-40 minute, and described additive is the additive according to the application.
Present invention also provides the ready coating reparation of the rollable asphalt according to the application for road surface or the purposes of deck paving.
the effect of invention
Compared with prior art, the rollable asphalt tool that the application provides has the following advantages: this asphalt can prefabricated rear rolling be deposited, both for asphalt Installation Technology provides operability, more reliable quality assurance compared with site operation can be provided again; Simultaneously, lay installation as spread out carpet time mating formation in scene, thus complete construction fast and open to traffic rapidly, alleviate the traffic jam that construction operation causes, shorten the time of road closed, reduce the disadvantageous effect that pavement maintenance brings to surrounding environment and workmen.
Embodiment
The application provides a kind of rollable asphalt, is characterised in that, described compound comprises modifying asphalt and mineral aggregate, based on the total mass of described compound, the mass percent of described modifying asphalt is 5-15%, preferred 8-10%, the mass percent of described mineral aggregate is 85-95%, preferred 90-92%; Wherein, described modifying asphalt comprises petroleum pitch and additive, and based on the total mass of described modifying asphalt, the mass percent of described petroleum pitch is 60-95%, preferred 80-92%, and the mass percent of described additive is 5-40%, preferred 8-20%.
In the application, described mineral aggregate comprises the mixture that particle diameter is the mineral aggregate of 13.2-16mm, 4.75-9.5mm, 0.15-2.36mm and 0-0.075mm; Based on the total mass of the mixture of described mineral aggregate, described particle diameter is that the mass percent of the mineral aggregate of 13.2-16mm, 4.75-9.5mm, 0.15-2.36mm and 0-0.075mm is respectively 0-15%, 15-50%, 20-80%, 5-25%.Wherein, particle diameter is that the mineral aggregate of 13.2-16mm and 4.75-9.5mm can adopt basalt and diabase; The mineral aggregate of 0.15-2.36mm and 0-0.075mm can adopt limestone.
In the application, the petroleum pitch in described modifying asphalt is the A level bi tumenf orr oad that satisfied China " standard specification for construction and acceptance of highway asphalt pavement " (JTGF40-2004) requires.Such as, SK70# matrix pitch.
In the application, the additive in described modifying asphalt comprises thermoplastic elastomer and flow ability modifying agent, and based on the total mass of described additive, the mass percent of described thermoplastic elastomer is 28-70%, and the mass percent of described flow ability modifying agent is 30-72%.One or more thermoplastic elastomers that described thermoplastic elastomer can be known in the art, such as styrene analog thermoplastic elastomer or vinyl thermoplastic elastomer.In this application, thermoplastic elastomer is preferably styrene-butadiene-styrene elastomerics and the elastomeric mixture of ethylene-octene copolymer.Wherein, the elastomeric content of described ethylene-octene copolymer is 18-45 quality %, based on described styrene-butadiene-styrene elastomerics.
In the application, the flow ability modifying agent in described additive comprises resin, wax and tenderizer, and the content of wherein said resin is 25-55 quality %, and the content of described wax is 4-12 quality %, and the content of described tenderizer is 8-30 quality %, based on described thermoplastic elastomer.
In the application, described resin is preferably C 5 petroleum resin, and described wax can be the wax of any common type, and described tenderizer is preferably naphthenic oil.
In the application, described additive can such as be mixed by each component raw material (such as thermoplastic elastomer, resin, wax and tenderizer) comprised by additive, gained mixture is added in twin screw extruder and carries out melting, then the material granulation of melting obtained granular additive and prepare.
The application also provides a kind of preparation method of the rollable asphalt according to the application, and the method comprises: by additive and aggregate blending; Again by the mixture after mix and petroleum pitch mix; Again by the mixture that obtains after last mix step and filler mix, obtain rollable asphalt.
In the art, mineral aggregate is divided into and gathers materials and filler, and it inherently refers to building stones, and generally speaking, particle diameter is greater than 0.075mm for gathering materials, and particle diameter is filler at below 0.075mm.In the preparation method described in the application, mineral aggregate is divided into and gathers materials and filler and adding respectively.
Wherein, the temperature of described additive and aggregate blending is 160-210 DEG C, and the time of mix is 20-120 second; The temperature of the mixture after described mix and petroleum pitch mix is 160-210 DEG C, and the time of mix is 20-120 second; The mixture obtained after described last mix step and the temperature of filler mix are 160-210 DEG C, and the time of mix is 20-120 second.
The application also provides a kind of preparation method of the rollable asphalt according to the application, and the method comprises: petroleum pitch and additive mix are obtained modifying asphalt; Again by modifying asphalt and aggregate blending; Again by the mixture that obtains after last mix step and filler mix, obtain rollable asphalt.
Modifying asphalt described in the application is prepared in the following manner: be first 60-95% by the mass percent of the total mass based on described modifying asphalt, the petroleum pitch of preferred 80-92% is heated to softening flowing, the mass percent added again based on the total mass of described modifying asphalt is 5-40%, the additive of preferred 8-20%, temperature being controlled between 150-190 DEG C, is 3000-7000r/min down cut 20-40 minute with high-speed shearing machine in shearing rate; Modifying asphalt after shearing is put into baking oven, and temperature controls between 150-190 DEG C, grows and obtains described modifying asphalt after 20-40 minute.
The application also provides the ready coating reparation of the rollable asphalt according to the application for road surface or the purposes of deck paving.
Embodiment
Additive Production embodiment
SBS (styrene-butadiene-styrene elastomerics, Yanshan Petrochemical, 1301); POE (ethylene-octene copolymer elastomerics, Dupont, 7467); C 5 petroleum resin (Lanzhou Petrochemical); Naphthenic oil (Kelamayi refinery, K6H); Silane coupling agent Si69 (Huangyan, Zhejiang East Zhejiang province rubber ingredients company limited, technical grade); Captax (Hebi City Hong Song promotor company limited of Henan Province, technical grade); Husky rope wax (Guangzhou Wang Gao Chemical Co., Ltd., technical grade), mass ratio is 50:15:25:9.3:0.5:0.2:5.
After tentatively being mixed by above-mentioned various material, then join in twin screw extruder and carry out melting, then granulation obtains the additive of the asphalt of the application.
Wherein, melt temperature is preferably 120-160 DEG C, and described granulation is preferably cold drawn bar granulation, and the particle diameter of the particle obtained preferably is less than 3mm.
Modifying asphalt production example
Embodiment 1
Be 78%(by mass ratio based on the quality of the modifying asphalt of preparation) middle extra large 70# matrix petroleum pitch be heated to 160 DEG C, to add mass ratio be 22%(based on the quality of the modifying asphalt of preparation) additive, stir to be added dose and be dissolved in petroleum pitch, with high-speed shearing machine with the VELOCITY SHEAR 30 minutes of 4000r/min, baking oven is put into after being uniformly dissolved, grow 30 minutes under the condition of 160 DEG C, i.e. obtained modifying asphalt.
Embodiment 2
Be 82%(by mass ratio based on the quality of the modifying asphalt of preparation) middle extra large 70# matrix petroleum pitch be heated to 170 DEG C, to add mass ratio be 18%(based on the quality of the modifying asphalt of preparation) additive, stir to be added dose and be dissolved in petroleum pitch, with high-speed shearing machine with the VELOCITY SHEAR 30 minutes of 5000r/min, baking oven is put into after being uniformly dissolved, grow 30 minutes under the condition of 160 DEG C, i.e. obtained modifying asphalt.
Embodiment 3
Be 65%(by mass ratio based on the quality of the modifying asphalt of preparation) middle extra large 70# matrix petroleum pitch be heated to 180 DEG C, to add mass ratio be 35%(based on the quality of the modifying asphalt of preparation) additive, stir to be added dose and be dissolved in petroleum pitch, with high-speed shearing machine with the VELOCITY SHEAR 30 minutes of 5500r/min, baking oven is put into after being uniformly dissolved, grow 20 minutes under the condition of 165 DEG C, i.e. obtained modifying asphalt.
Embodiment 4
Be 72%(by mass ratio based on the quality of the modifying asphalt of preparation) middle extra large 70# matrix petroleum pitch be heated to 170 DEG C, to add mass ratio be 28%(based on the quality of the modifying asphalt of preparation) additive, stir to be added dose and be dissolved in petroleum pitch, with high-speed shearing machine with the VELOCITY SHEAR 40 minutes of 5000r/min, baking oven is put into after being uniformly dissolved, grow 30 minutes under the condition of 165 DEG C, i.e. obtained modifying asphalt.
Embodiment 5
Be 88%(by mass ratio based on the quality of the modifying asphalt of preparation) middle extra large 70# matrix petroleum pitch be heated to 150 DEG C, to add mass ratio be 12%(based on the quality of the modifying asphalt of preparation) additive, stir to be added dose and be dissolved in petroleum pitch, with high-speed shearing machine with the VELOCITY SHEAR 30 minutes of 7000r/min, baking oven is put into after being uniformly dissolved, grow 20 minutes under the condition of 150 DEG C, i.e. obtained modifying asphalt.
Embodiment 6
Be 70%(by mass ratio based on the quality of the modifying asphalt of preparation) middle extra large 70# matrix petroleum pitch be heated to 150 DEG C, to add mass ratio be 30%(based on the quality of the modifying asphalt of preparation) additive, stir to be added dose and be dissolved in petroleum pitch, with high-speed shearing machine with the VELOCITY SHEAR 40 minutes of 3000r/min, baking oven is put into after being uniformly dissolved, grow 20 minutes under the condition of 150 DEG C, i.e. obtained modifying asphalt.
Embodiment 7
Be 80%(by mass ratio based on the quality of the modifying asphalt of preparation) middle extra large 70# matrix petroleum pitch be heated to 175 DEG C, to add mass ratio be 20%(based on the quality of the modifying asphalt of preparation) additive, stir to be added dose and be dissolved in petroleum pitch, with high-speed shearing machine with the VELOCITY SHEAR 40 minutes of 7000r/min, baking oven is put into after being uniformly dissolved, grow 40 minutes under the condition of 165 DEG C, i.e. obtained modifying asphalt.
Performance test
According to the testing method in Chinese transportation section industry standard " highway engineering pitch and Asphalt Mixture Experiment code (JTGE20-2011) ", respectively the modifying asphalt prepared in 70# matrix petroleum pitch and above-described embodiment 1-7 is carried out to the test of softening temperature, 25 DEG C of penetration degrees and 135 DEG C of brookfield viscosities.Test result is in table 1.
As can be seen from Table 1, the softening temperature of modifying asphalt and 135 DEG C of brookfield viscosities comparatively matrix petroleum pitch are increased significantly, and penetration degree decreases simultaneously.Illustrate that high-temperature behavior and the viscosity of the modifying asphalt of the application improve.
The performance of each embodiment medium pitch of table 1
The preparation of rollable asphalt---wet moulding:
1) any one modifying asphalt prepared in embodiment 1-7 is heated to 170 DEG C, mineral aggregate is heated to 180 DEG C; The modifying asphalt of heating and the input mixing machine that gathers materials are started mix (mix temperature 180 DEG C, duration of mixing 90 seconds), again by the mixture after mix and filler mix (mix temperature 180 DEG C, duration of mixing 90 seconds), the mass ratio of modifying asphalt and mineral aggregate is 10:90, finally obtains rollable asphalt.
2) mineral aggregate adopted in the rollable asphalt of preparation comprises the mixture that particle diameter is 13.2mm, 9.5mm, 4.75mm, 2.36mm, 0.15mm, 0.075mm and the mineral aggregate being less than 0.075mm; Based on the total mass of described mixture, the mass percent of the mineral aggregate of above-mentioned each particle diameter of use is in table 2.
The particle diameter of table 2 mineral aggregate and the per-cent of each particle diameter mineral aggregate
According to Chinese transportation section industry standard " highway engineering pitch and Asphalt Mixture Experiment code (JTGE20-2011) ", the asphalt using the modifying asphalt of embodiment 4,7 to prepare and 70# matrix petroleum pitch compound are carried out to the contrast test of girder bending property, high temperature stability performance, Marshall performance.
Wherein, described 70# matrix petroleum pitch compound is prepared in the following manner:
Middle extra large 70# matrix petroleum pitch is heated to 140 DEG C, mineral aggregate is heated to 163 DEG C; The matrix petroleum pitch of heating and the input mixing machine that gathers materials are started mix (mix temperature 150 DEG C, duration of mixing 60 seconds), again by the mixture after mix and filler mix (mix temperature 150 DEG C, duration of mixing 60 seconds), finally obtain 70# matrix petroleum pitch compound.
As can be seen from the test result of table 3, table 4, table 5, the girder bending property of the rollable asphalt of the application, high temperature stability performance, Marshall performance are significantly improved.
Table 3 girder bending property test result
Note: experimental test temperature is 10 DEG C
Table 4 high-temperature behavior test result
Table 5 Marshall the performance test results
Claims (11)
1. a rollable asphalt, is characterised in that, described compound comprises modifying asphalt and mineral aggregate, and based on the total mass of described compound, the mass percent of described modifying asphalt is 5-15%, and the mass percent of described mineral aggregate is 85-95%; Wherein, described modifying asphalt is made up of petroleum pitch and additive, based on the total mass of described modifying asphalt, the mass percent of described petroleum pitch is 60-95%, the mass percent of described additive is 5-40%, and the mixture that described mineral aggregate is the mineral aggregate of 13.2-16mm, 4.75-9.5mm, 0.15-2.36mm and 0-0.075mm by particle diameter is formed; Based on the total mass of the mixture of described mineral aggregate, described particle diameter is that the mass percent of the mineral aggregate of 13.2-16mm, 4.75-9.5mm, 0.15-2.36mm and 0-0.075mm is respectively 0-15%, 15-50%, 20-80%, 5-25%,
Wherein, described additive comprises thermoplastic elastomer and flow ability modifying agent, based on the total mass of described additive, the mass percent of described thermoplastic elastomer is 28-70%, and the mass percent of described flow ability modifying agent is 30-72%, and described flow ability modifying agent comprises resin, wax and tenderizer, the content of wherein said resin is 25-55 quality %, the content of described wax is 4-12 quality %, and the content of described tenderizer is 8-30 quality %, based on described thermoplastic elastomer.
2. rollable asphalt according to claim 1, be characterised in that, based on the total mass of described compound, the mass percent of described modifying asphalt is 8-10%, the mass percent of described mineral aggregate is 90-92%, based on the total mass of described modifying asphalt, the mass percent of described petroleum pitch is 80-92%, and the mass percent of described additive is 8-20%.
3. rollable asphalt according to claim 1, is characterised in that, described thermoplastic elastomer is styrene-butadiene-styrene elastomerics and the elastomeric mixture of ethylene-octene copolymer.
4. rollable asphalt according to claim 3, is characterised in that, the elastomeric content of described ethylene-octene copolymer is 18-45 quality %, based on described styrene-butadiene-styrene elastomerics.
5. rollable asphalt according to claim 1, is characterised in that, described resin is C 5 petroleum resin, and described tenderizer is naphthenic oil.
6. a preparation method for the rollable asphalt according to any one of claim 1-5, be characterised in that, the method comprises: by additive and aggregate blending; Again by the mixture after mix and petroleum pitch mix; Again by the mixture that obtains after last mix step and filler mix, obtain rollable asphalt, described in gather materials for particle diameter is greater than the mineral aggregate of 0.075mm, described filler is the mineral aggregate of particle diameter at below 0.075mm.
7. the preparation method of rollable asphalt according to claim 6, is characterised in that, the temperature of described additive and aggregate blending is 160-210 DEG C, and the time of mix is 20-120 second; The temperature of the mixture after described mix and petroleum pitch mix is 160-210 DEG C, and the time of mix is 20-120 second; The mixture obtained after described last mix step and the temperature of filler mix are 160-210 DEG C, and the time of mix is 20-120 second.
8. a preparation method for the rollable asphalt according to any one of claim 1-5, be characterised in that, the method comprises: petroleum pitch and additive mix are obtained modifying asphalt; Again by modifying asphalt and aggregate blending; Again by the mixture that obtains after last mix step and filler mix, obtain rollable asphalt, described in gather materials for particle diameter is greater than the mineral aggregate of 0.075mm, described filler is the mineral aggregate of particle diameter at below 0.075mm.
9. the preparation method of a modifying asphalt, it is characterized in that, be first that the petroleum pitch of 60-95% is heated to softening flowing by the mass percent of the total mass based on described modifying asphalt, the mass percent added again based on the total mass of described modifying asphalt is the additive of 5-40%, temperature being controlled between 150-190 DEG C, is 3000-7000r/min down cut 20-40 minute with high-speed shearing machine in shearing rate; Modifying asphalt after shearing is put into baking oven, and temperature controls between 150-190 DEG C, grows and obtains described modifying asphalt after 20-40 minute, and described additive is the additive according to any one of claim 1,3-5.
10. preparation method according to claim 9, is characterized in that, based on the total mass of described modifying asphalt, the mass percent of petroleum pitch is 80-92%, and the mass percent of additive is 8-20%.
11. rollable asphalts according to any one of claim 1-5 are used for the ready coating reparation on road surface or the purposes of deck paving.
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| CN103951324A (en) * | 2014-04-23 | 2014-07-30 | 北京市政路桥管理养护集团有限公司 | Flexible fiber asphalt mixture and preparation method thereof |
| CN104326700A (en) * | 2014-09-16 | 2015-02-04 | 江西省公路科研设计院 | Cold laid bituminous mixture for roads and manufacturing method and construction technology thereof |
| CN105696434A (en) * | 2014-11-25 | 2016-06-22 | 北京市政路桥管理养护集团有限公司 | Bituminous binder for carpet bituminous mixture pavement and application thereof |
| CN105694786B (en) * | 2014-11-25 | 2018-10-12 | 北京市政路桥管理养护集团有限公司 | Blanket type asphaltic road-mix surface course water-base epoxy bonding agent and its construction method |
| CN104987734B (en) * | 2015-07-06 | 2018-11-16 | 交通运输部公路科学研究所 | A kind of high-ductility high-elastic modified asphalt, preparation method and its usage |
| CN107759138A (en) * | 2017-11-08 | 2018-03-06 | 上海浦东路桥建设股份有限公司 | Assembled asphalt pavement material and the preparation method with the prefabricated component |
| CN109555019A (en) * | 2019-01-10 | 2019-04-02 | 广东省路桥建设发展有限公司 | The method of more slurry type asphalt repairing asphalt paving of steel bridge |
| CN110396884A (en) * | 2019-07-24 | 2019-11-01 | 中路高科(北京)公路技术有限公司 | A kind of intelligent bituminous road surface of prefabricated blanket type and preparation method thereof |
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| CN101775223B (en) * | 2009-12-24 | 2011-08-17 | 交通部公路科学研究所 | Additive for drainage asphalt mixture of high temperature heavy load road and preparation method thereof |
| CN102304289B (en) * | 2011-09-27 | 2013-03-27 | 栾海 | Road asphalt prepared by adding plant asphalt to petroleum asphalt and production method thereof |
| CN102766340A (en) * | 2012-08-13 | 2012-11-07 | 交通运输部公路科学研究所 | Modified biological asphalt material, biological asphalt mixture, preparation method thereof and applications |
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