CN107651887A - A kind of high-modulus rubber-asphalt mixture and preparation method thereof - Google Patents
A kind of high-modulus rubber-asphalt mixture and preparation method thereof Download PDFInfo
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- CN107651887A CN107651887A CN201710640500.5A CN201710640500A CN107651887A CN 107651887 A CN107651887 A CN 107651887A CN 201710640500 A CN201710640500 A CN 201710640500A CN 107651887 A CN107651887 A CN 107651887A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/26—Bituminous materials, e.g. tar, pitch
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
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Abstract
The invention discloses a kind of high-modulus rubber-asphalt mixture and preparation method thereof, belong to road engineering technical field.A kind of high-modulus rubber-asphalt mixture, by weight, including gather materials 100 parts, 0.5 3 parts of miberal powder, 36 parts of hard grades of bitumen, 0.5 1.5 parts of waste tyre rubber powder, 0.1 0.5 parts of catalytic degradation agent；The present invention simultaneously provides a kind of preparation method of high-modulus rubber-asphalt mixture.The invention can improve the permanent deformation resistance of bituminous paving, less rut disease, extend the service life and traffic safety comfortableness on road surface, solve existing rubber asphalt hot storage stability difference and beacon decay is fast and its concrete road surface high temperature resistant is poor, it is yielding under Heavy Traffic, be also easy to produce rut, the problems such as compound bitumen aggregate ratio is big, construction workability is poor, field harmful gas discharge capacity is big.
Description
Technical field
The invention belongs to road engineering technical field, is related to a kind of rubber-asphalt mixture, more particularly to a kind of high-modulus
Rubber-asphalt mixture and preparation method thereof.
Background technology
With developing rapidly for China's communication, traffic volume of highway is increasing, and heavy goods vehicles quantity increases rapidly, weight
Load, overload, canalized traffic are increasingly severe, and continuous high temperature weather frequently occurs, and factors cause road surface high-temperature stability
Deficiency and caused rut, the disease such as elapse, embrace, being the main shape of China's each standard highway bituminous paving early disease at present
Formula.These early stage permanent deformation diseases can influence the flatness on road surface, cut down the bulk strength of surface layer and pavement structure, reduce
The anti-slide performance on road surface, or even security when can influence high speed traveling due to rut internal water accumulation, it is also possible to influence vehicle and exist
Overtake other vehicles or operational stability during change lane.How to strengthen and improve the use quality of bituminous paving, extend the use on road surface
Life-span and raising road surface integrated service level are the vital tasks that road Scientific Research Workers face.
To adapt to the demand for development of road construction, bituminous paving is overcome to be produced because of compound high temperature anti-shear ability deficiency
Rut disease, also occur some new materials in recent years, if this structure of High Modulus Asphalt Mixture is increasingly by industry
The concern on boundary.The concept of High Modulus Asphalt Mixture, using low grade pitch as main binding material, has height originating from France
Asphalt content, low porosity, the design feature of continuous grading.High Modulus Asphalt Mixture has excellent mechanical property and good
Fatigue behaviour, while because its modulus is higher, there is excellent anti-rut behavior, therefore Perpetual Pavements Structural can be used in
In and be thinned road surface thickness, reduce construction costs.As can be seen here, the modulus of ground surface material is improved, is to solve the problems, such as pavement track
Effective technology means.
When High Modulus Asphalt Mixture designs, on the premise of Gradation Optimization, bituminous cements performance is to determine high-modulus
Asphalt integrates the key of road characteristic.Currently used method be using high additive SBS or addition various functions agent with
The softening point of modified pitch is improved, although improving " the aobvious index " of pitch, is instructed due to lacking principle, deviate from pitch
Viscous-elastic behaviour, viscosity-temperature characteristics and the adhesion characteristics with gathering materials that material should possess, make the production of asphalt, pave, grind
Occur many uncontrollable factors during pressure, cause to fail to reach expected whole structure using expensive goods.
Meanwhile the developing rapidly in recent years with auto industry and transportation, a large amount of junked tires are generated, are formed
Huge " black pollution ", serious pollution of ecological environment simultaneously take substantial amounts of land resource.Inside elastomeric material in tire
Complicated space network, and with the addition of the materials such as substantial amounts of filler and softening oil, these all strongly limit its time
Receive and utilize, and using damaged tire come to produce rubber powder be very reasonable one of effective approach recognised by people, with the rubber of its preparation
Glue asphalt has preferable high temperature permanent deformation resistance, noise reduction, environmental protection, anti-skidding compared with plain asphalt compound
Deng effect.But because waste tyre rubber powder has crosslinking rigidity characteristic, traditional handicraft is difficult to make waste tyre rubber powder abundant in pitch
Degraded, can not play modifying agent effect, only as a kind of filler.So that traditional waste rubber powder modified asphalt is still with stronger
Temperature sensitivity, summer temperature is higher, it is sick that the early stage such as rut, passage is easily produced under Heavy Traffic or the larger comprehensive function of the gradient
Evil, there is the possibility of bursting by freezing again in the winter time, have a strong impact on usage capability of road and the time limit；Meanwhile thermmal storage in work progress be present
It is all that stability is poor, beacon decay is fast, compound bitumen aggregate ratio content is big, construction workability is poor, field harmful gas discharge capacity is big etc.
More defects, constrain the further genralrlization of waste Crumb rubber modified asphalt.
Therefore, how to reduce Bituminous Pavement of Running Overload Vehicles rut disease, improve rubber asphalt performance, reduce road surface build
This is formed, is urgent problem in waste tyre glue powder modified asphalt mixture application process.
The content of the invention
Goal of the invention：To solve the above problems, the invention provides a kind of high-modulus rubber-asphalt mixture and its preparation
Method, can improve the permanent deformation resistance of bituminous paving, less rut disease, extend the service life and traffic safety on road surface
Comfortableness, solve existing rubber asphalt hot storage stability difference and beacon decay is fast and its concrete road surface high temperature resistant is poor, heavy duty
It is yielding under traffic, be also easy to produce rut, compound bitumen aggregate ratio is big, construction workability is poor, field harmful gas discharge capacity is big etc. asks
Topic.
To achieve the above object, the technical solution adopted by the present invention is as follows：
A kind of high-modulus rubber-asphalt mixture, by weight, including gather materials 100 parts, miberal powder 0.5-3 parts, hard grades of bitumen
3-6 parts, waste tyre rubber powder 0.5-1.5 parts, catalytic degradation agent 0.1-0.5 parts.This gathers materials meets for road rubble, quality index
《Standard specification for construction and acceptance of highway asphalt pavement》(JTG F40-2004) requirement.The miberal powder uses limestone mineral powder, and quality index is full
Foot《Standard specification for construction and acceptance of highway asphalt pavement》(JTG F40-2004) requirement.The hard grades of bitumen uses bi tumenf orr oad, and 25
DEG C needle penetration (0.1mm) is 10-40.The waste tyre rubber powder particle diameter contains between 20-80 mesh, content of carbon black not less than 28%, ash content
Small by 42%, acetone extracts oil content out less than 22% under amount is not more than 8%, rubber hydrocarbon content not.The catalytic degradation agent reaction temperature
For 130-230 DEG C, density 1.030-1.060.
Present invention also offers a kind of preparation method of high-modulus rubber-asphalt mixture, this method comprises the following steps：
(1) weigh in proportion, be put into after hard grades of bitumen is heated into 180 DEG C in reactor, then add waste tyre rubber powder
Stirring 30-60min is allowed to warm to 210 DEG C, then is cooled to it with 1000-2000 turns/min speed stirring 0.5-1.5h
170-180 DEG C, it is eventually adding catalytic degradation agent and 3-8h is persistently stirred with 150-300 turns/min speed, high-modulus rubber is made
Pitch；
(2) would be heated to 180-200 DEG C gather materials weigh after be added to and mix and stir in pot, action of forced stirring 5-10s；
(3) step 1 gained high-modulus rubber asphalt heating is added to step 2 products therefrom to 180-185 DEG C after weighing
In, action of forced stirring 20-30s；
(4) miberal powder after weighing is added in step 3 products therefrom, gone out after action of forced stirring 10-15s at 170-185 DEG C
Pot, you can obtain high-modulus rubber-asphalt mixture.
Wherein, can reach according to the high-modulus rubber asphalt prepared described in step 1, its performance indications：Needle penetration (25
DEG C, 5s, 100g) for 25-35 (0.1mm), softening point >=70 DEG C, 60 DEG C of viscosity >=20000Pa.s, 150 DEG C of viscosity 1.5-
4Pa.s, elasticity recover (25 DEG C) >=75%, solubility >=95%.
Wherein, the high-modulus rubber-asphalt mixture prepared by above-mentioned steps, its performance indications can reach：Marshall is steady
Degree of determining >=10KN, Marshall residual stability >=85%, freeze-thaw split intensity ratio >=80%, wheel tracking test dynamic stability (60
DEG C) >=6000 times/mm, maximum flexural-tensile strain (- 10 DEG C) >=2000 μ ε, complex modulus (15 DEG C) >=14000Mpa.
The high-modulus rubber-asphalt mixture that the present invention develops, has the advantages that：
1st, the addition of catalytic degradation agent make it that waste tyre rubber powder has obtained sufficient depolymerization in pitch, a large amount of in rubber powder
Polymer be uniformly dispersed in molecular forms in pitch, improve hot storage stability, the construction workability of rubber asphalt
With the synthesis pavement performance of compound.
2nd, crosslinking agent of the rubber powder using sulfide as main component in depolymehzation process has obtained sufficient release, by work
The centralized recovery processing of factory, poisonous, pernicious gas uncontrollable discharge in less work progress, is truly realized rubber asphalt
The green construction of compound.
3rd, on the one hand high-modulus rubber-asphalt mixture is improving mixing using cheap waste tyre rubber powder as modifying agent
While expecting pavement performance, the production cost of High Modulus Asphalt Mixture is considerably reduced (with the high mould asphalt of tradition
Compared to reduction by more than 25%)；On the other hand substantial amounts of junked tire is consumed, reduces environmental pollution.
4th, high-modulus rubber-asphalt mixture has dynamic modulus height, anti-rut behavior, anti-water damage, fatigue behaviour good
The characteristics of good, it is mainly used in bituminous paving, cutting optimal, road surface overall structure rutting resistance can be improved.While overlength
Service life, the maintenance expense during the operation of road surface is greatly reduced.
Brief description of the drawings
The gradation curve of mineral aggregate figure of the high-modulus rubber-asphalt mixture of Fig. 1 embodiment of the present invention 1；
The gradation curve of mineral aggregate figure of the high-modulus rubber-asphalt mixture of Fig. 2 embodiment of the present invention 2.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, not
For limiting the present invention.
Embodiment 1：
The project profile of the present embodiment is：High-modulus rubber-asphalt mixture HMAC-20 test sections are selected in Anhui Province Xuancheng
City Langxi County society's horizontal line mining area accommodation road cutting optimal, engineering use Class III highway standard, two-way two track, design speed
60Km/h, traffic loading are mainly rock haul truck more than gross weight 120t, per day 40,000 tons of traffic total load head, road surface knot
Configuration formula uses：4cm batch production stable type rubber asphalt SUP-13+6cm high-modulus rubber-asphalt mixtures HMAC-20+1cm
Rubber asphalt stress absorbing layer.Cutting optimal is using high-modulus rubber-asphalt mixture HMAC-20 of the invention.
Hard grades of bitumen used in Experiment Road uses the perfectly straight roads of TNH-25 of Jiangsu Tian Nuo pavement materials Science and Technology Ltd. production
Road asphalt, performance indications are shown in Table 1.
The TNH-25 hard grades of bitumen performance indications of table 1
Waste tyre rubber powder uses 40 mesh rubber powder purchased in market, its content of carbon black 30.6%, content of ashes 6.1%, rubber hydrocarbon content
46.9%th, acetone extracts oil content 19.5% out.
Catalytic degradation agent uses the RCH-180 type catalytic degradation agent of Jiangsu Tian Nuo pavement materials Science and Technology Ltd. exploitation,
130-230 DEG C of reaction temperature, density 1.056.
The limestone gravel to gather materials using the production of Liyang Shang Pei building stones factory, its crush values, wearing valve, flat-elongated particles contain
The key indexs such as amount, clay content, density, water absorption rate meet《Standard specification for construction and acceptance of highway asphalt pavement》(JTG F40-2004)
It is required that.
Miberal powder uses the limestone mineral powder of Liyang Shang Pei building stones factory production, its fineness, water content, plasticity index, hydrophilic system
The key indexs such as number《Standard specification for construction and acceptance of highway asphalt pavement》(JTG F40-2004) requirement.
To gather materials and miberal powder carry out final gradation, formate gradation composition meet《Bituminous pavement design for highway specification》(JTG D50-
2006) grading area requirement in, formate gradation composition are shown in Table 2.
The high-modulus rubber-asphalt mixture HMAC-20 formate gradation compositions of table 2
High-modulus rubber-asphalt mixture HMAC-20 mix-designs are carried out according to volumetric method, obtain the drip of high-modulus rubber
Each material proportion of composing is shown in Table 3 in blue or green compound HMAC-20.
Each material proportion of composing in the high-modulus rubber-asphalt mixture HMAC-20 of table 3
| Composition material | Ratio |
| Gather materials | 100 parts |
| Miberal powder | 2 parts |
| Hard grades of bitumen | 3.7 part |
| Waste tyre rubber powder | 0.8 part |
| Catalytic degradation agent | 0.13 part |
With reference to shown in accompanying drawing 1, the high-modulus rubber-asphalt mixture shown in table 3 is prepared, as follows：
(1) weigh in proportion, be put into after hard grades of bitumen is heated into 180 DEG C in reactor, then add waste tyre rubber powder
Stirring 30min is allowed to warm to 210 DEG C, then it is cooled to 180 DEG C with 1200 turns/min speed stirring 1.5h, is eventually adding
Catalytic degradation agent persistently stirs 4.5h with 200 turns/min speed, and high-modulus rubber asphalt is made；
(2) would be heated to 190 DEG C gather materials weigh after be added to and mix and stir in pot, action of forced stirring 10s；
(3) step 1 gained high-modulus rubber asphalt heating is added in step 2 products therefrom to 185 DEG C after weighing,
Action of forced stirring 20s；
(4) miberal powder after weighing is added in step 3 products therefrom, taken the dish out of the pot after action of forced stirring 15s at 185 DEG C, you can
Obtain high-modulus rubber-asphalt mixture.
High-modulus rubber asphalt prepared by above-mentioned steps 1, its performance indications are shown in Table 4.
The high-modulus rubber asphalt performance indications of table 4
After the completion of prepared by above-mentioned high-modulus rubber-asphalt mixture HMAC-20, its compound technical performance is shown in Table 5.
The high-modulus rubber-asphalt mixture HMAC-20 technical performances of table 5
| Pilot project | Testing result | Technical requirements |
| Marshall stability, KN | 16.30 | ≥10KN |
| Residual stability, % | 93.9 | >=85% |
| Freeze-thaw split intensity ratio, % | 86.1 | >=80% |
| Wheel tracking test dynamic stability (60 DEG C), secondary/mm | 13108 | ≥6000 |
| Wheel tracking test dynamic stability (70 DEG C), secondary/mm | 9210 | ≥6000 |
| Maximum flexural-tensile strain (- 10 DEG C), μ ε | 2099 | ≥2000 |
| Complex modulus (15 DEG C, 10Hz), MPa | 15424 | ≥14000 |
Embodiment 2：
The project profile of the present embodiment is：High-modulus rubber-asphalt mixture HMAC-20 test sections are selected in Xuzhou to Mingguang City
Surface layer in highway Jiangsu Section, 800 meters of total length, engineering use highway standard, two-way four-lane, design speed 120Km/
H, pavement structure form use：4cm asphalts (SMA-13)+6cm asphalt (HMAC-20)+8cm pitches mix
Expect (SUP-25).Middle surface layer is using high-modulus rubber-asphalt mixture HMAC-20 of the invention.
Hard grades of bitumen used in Experiment Road uses the perfectly straight roads of TNH-35 of Jiangsu Tian Nuo pavement materials Science and Technology Ltd. production
Road asphalt, performance indications are shown in Table 6.
Table 6TNH-35 hard grades of bitumen performance indications
Waste tyre rubber powder uses the rubber powder of 60 mesh purchased in market, and its content of carbon black 30.1%, content of ashes 6.4%, rubber hydrocarbon contain
Amount 44.1%, acetone extract oil content 17.4% out.
Catalytic degradation agent uses the RCH-180 type catalytic degradation agent of Jiangsu Tian Nuo pavement materials Science and Technology Ltd. exploitation,
130-230 DEG C of reaction temperature, density 1.056.
The limestone gravel to gather materials using the production of Xuzhou Jia Wang building stones factory, its crush values, wearing valve, flat-elongated particles contain
The key indexs such as amount, clay content, density, water absorption rate meet《Standard specification for construction and acceptance of highway asphalt pavement》(JTG F40-2004)
It is required that.
Miberal powder uses the limestone mineral powder of building stones factory of Xu Zhoumao villages production, its fineness, water content, plasticity index, hydrophilic system
The key indexs such as number《Standard specification for construction and acceptance of highway asphalt pavement》(JTG F40-2004) requirement.
To gather materials and miberal powder carry out final gradation, formate gradation composition meet《Bituminous pavement design for highway specification》(JTG D50-
2006) grading area requirement in, formate gradation composition are shown in Table 7.
The high-modulus rubber-asphalt mixture HMAC-20 formate gradation compositions of table 7
High-modulus rubber-asphalt mixture HMAC-20 mix-designs are carried out according to volumetric method, obtain the drip of high-modulus rubber
Each material proportion of composing is shown in Table 8 in blue or green compound HMAC-20.
Each material proportion of composing in the high-modulus rubber-asphalt mixture HMAC-20 of table 8
With reference to shown in accompanying drawing 2, the high-modulus rubber-asphalt mixture shown in table 8 is prepared, as follows：
(1) weigh in proportion, be put into after hard grades of bitumen is heated into 180 DEG C in reactor, then add waste tyre rubber powder
Stirring 45min is allowed to warm to 210 DEG C, then it is cooled to 175 DEG C with 1500 turns/min speed stirring 1h, is eventually adding and urges
Change degradation agent and 7h is persistently stirred with 300 turns/min speed, high-modulus rubber asphalt is made；
(2) would be heated to 195 DEG C gather materials weigh after be added to and mix and stir in pot, action of forced stirring 10s；
(3) step 1 gained high-modulus rubber asphalt heating is added in step 2 products therefrom to 180 DEG C after weighing,
Action of forced stirring 25s；
(4) miberal powder after weighing is added in step 3 products therefrom, taken the dish out of the pot after action of forced stirring 10s at 180 DEG C, you can
Obtain high-modulus rubber-asphalt mixture.
High-modulus rubber asphalt prepared by above-mentioned steps 1, its performance indications are shown in Table 9.
The high-modulus rubber asphalt performance indications of table 9
After the completion of prepared by above-mentioned high-modulus rubber-asphalt mixture HMAC-20, its compound technical performance is shown in Table 10.
The high-modulus rubber-asphalt mixture HMAC-20 technical performances of table 10
Claims (2)
- A kind of 1. high-modulus rubber-asphalt mixture, it is characterised in that：Include each component of following mass fraction：Gather materials 100 parts, Miberal powder 0.5-3 parts, hard grades of bitumen 3-6 parts, waste tyre rubber powder 0.5-1.5 parts, catalytic degradation agent 0.1-0.5 parts；The hard grades of bitumen uses the bi tumenf orr oad of straight run technique productions, and 25 DEG C of needle penetrations (0.1mm) are 10-40；The waste tyre rubber powder particle diameter is between 20-80 mesh, content of carbon black not less than 28%, content of ashes no more than 8%, rubber hydrocarbon Content not under small by 42%, acetone extract oil content out and be less than 22%；The catalytic degradation agent reaction temperature is 130-230 DEG C, density 1.030-1.060.
- A kind of 2. preparation method of high-modulus rubber-asphalt mixture according to claim 1, it is characterised in that including with Lower step：(1) weigh, be put into after hard grades of bitumen is heated into 180 DEG C in reactor in proportion, then add waste tyre rubber powder stirring 30-60min is allowed to warm to 210 DEG C, then it is cooled to 170- with 1000-2000 turns/min speed stirring 0.5-1.5h 180 DEG C, it is eventually adding catalytic degradation agent and 3-8h is persistently stirred with 150-300 turns/min speed, high-modulus rubber asphalt is made；(2) would be heated to 180-200 DEG C gather materials weigh after be added to and mix and stir in pot, action of forced stirring 5-10s；(3) high-modulus rubber asphalt heating obtained by step (1) is added to step (2) products therefrom to 180-185 DEG C after weighing In, action of forced stirring 20-30s；(4) miberal powder after weighing is added in step (3) products therefrom, taken the dish out of the pot after action of forced stirring 10-15s at 170-185 DEG C, It can obtain high-modulus rubber-asphalt mixture.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109761542A (en) * | 2019-03-19 | 2019-05-17 | 湖州市公路管理局 | A kind of anti-rutting asphalt mixture and preparation method thereof |
| CN111548058A (en) * | 2020-06-28 | 2020-08-18 | 江苏天诺环境工程技术开发有限公司 | High-performance asphalt cold-patch material based on acidic stone and preparation method thereof |
| CN112374805A (en) * | 2020-11-16 | 2021-02-19 | 中交建冀交高速公路投资发展有限公司 | Carbon fiber rubber modified asphalt mixture and preparation method thereof |
| CN112573862A (en) * | 2020-12-14 | 2021-03-30 | 江苏一诺路桥工程检测有限公司 | Durable asphalt mixture based on high-modulus asphalt |
| CN116444201A (en) * | 2023-03-15 | 2023-07-18 | 镇江市规划勘测设计集团有限公司 | SMA rubber asphalt mixture internally doped with rubber powder and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109761542A (en) * | 2019-03-19 | 2019-05-17 | 湖州市公路管理局 | A kind of anti-rutting asphalt mixture and preparation method thereof |
| CN111548058A (en) * | 2020-06-28 | 2020-08-18 | 江苏天诺环境工程技术开发有限公司 | High-performance asphalt cold-patch material based on acidic stone and preparation method thereof |
| CN112374805A (en) * | 2020-11-16 | 2021-02-19 | 中交建冀交高速公路投资发展有限公司 | Carbon fiber rubber modified asphalt mixture and preparation method thereof |
| CN112573862A (en) * | 2020-12-14 | 2021-03-30 | 江苏一诺路桥工程检测有限公司 | Durable asphalt mixture based on high-modulus asphalt |
| CN116444201A (en) * | 2023-03-15 | 2023-07-18 | 镇江市规划勘测设计集团有限公司 | SMA rubber asphalt mixture internally doped with rubber powder and preparation method thereof |
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| CN107651887B (en) | 2019-12-31 |
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