CN103588424A - Durable high-modulus asphalt mixture based on hard asphalt particles - Google Patents
Durable high-modulus asphalt mixture based on hard asphalt particles Download PDFInfo
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Abstract
The invention discloses a durable high-modulus asphalt mixture based on hard asphalt particles. The asphalt mixture comprises 100 parts by mass of mineral aggregate and 5.3-5.7 parts by mass of asphalt, wherein the mineral aggregate comprises a limestone aggregate accounting for 96-98% of the total mass of the mineral aggregate, and limestone mineral powder accounting for 2-4% of the total mass of the mineral aggregate; and the asphalt is a compound of number 70 road petroleum asphalt and the hard asphalt particles. The asphalt mixture improves the gradation of the mineral aggregate, so that a coarse aggregate forms a good skeleton structure, and the shear property and the compressive property of the mixture are improved; and the property of asphalt adhesive cement in the mixture is improved by adding an appropriate amount of mineral powder, so that the surface of the mineral aggregate has appropriate asphalt membrane thickness. Therefore, the mixture is good in high temperature property, easy to compact, and excellent in fatigue resistance and durability; the capacity of a pavement for resisting damage of a track and the like can be improved if the mixture is used in a road middle surface course; the construction cost can be lowered; and the service life and the maintenance cycle of the pavement can be prolonged.
Description
Technical field
The present invention relates to road surfacing material, relate in particular to a kind of weather resistance High Modulus Asphalt Mixture based on hard pitch particle.
Background technology
High Modulus Asphalt Mixture originates from France, with its superior high-temperature stability, good anti-fatigue performance, in French widespread use, at present in countries such as Britain, the U.S. also in positive popularization.According to defining in normes Francaises NFP98-140, by adopting high-modulus admixture or using the technology such as low grade pitch, make bituminous concrete reach corresponding standard and just can be called high-modulus asphalt concrete.
Rut lower surface layer in bituminous pavement all has generation, and the situation that middle surface layer rut disease occurs is more general and hazardness is larger.High Modulus Asphalt Mixture is a kind of Major Technology that improves the anti-rut performance of Heavy Traffic pitch.Current domestic research realizes technological approaches for High Modulus Asphalt Mixture and mainly contains: No. 50 pitch+additives, No. 70 pitch+rock asphalt, No. 90 pitch+anti-rut agents, SBS modifying asphalt+lake pitch, rubber asphalts etc., method of design is also to design according to the method for design of plain asphalt compound substantially.
Chinese patent (CN101333337B) discloses a kind of high modulus bituminous mixture for intermediate surface layer of asphalt pavement, adopt heavy traffic asphaltum, polymer modifiers, gather materials and filler forms, polymer modifiers adopts one of LDPE and HDPE or its combination, and emphasis solves the high temperature rut problem on road surface.Owing to adopting the exotic materialss such as additive, overall cost is higher, has affected applying of High Modulus Asphalt Mixture.
Because the defect that above-mentioned existing High Modulus Asphalt Mixture exists, the inventor is based on being engaged in this type of product design manufacture abundant practical experience and expertise for many years, and the utilization of cooperation scientific principle, positive research and innovation in addition, to founding a kind of novel weather resistance High Modulus Asphalt Mixture based on hard pitch particle, make it have more practicality.Through constantly research, design, and after repeatedly studying sample and improving, finally create the present invention who has practical value.
Summary of the invention
Main purpose of the present invention is, overcome the defect that existing High Modulus Asphalt Mixture exists, and provide a kind of novel weather resistance High Modulus Asphalt Mixture based on hard pitch particle, when guaranteeing compound high-temperature behavior, reduce costs, speed of application is faster, thereby be more suitable for practicality, and there is the utility value in industry.
The object of the invention to solve the technical problems realizes by the following technical solutions.A kind of weather resistance High Modulus Asphalt Mixture based on hard pitch particle proposing according to the present invention, comprise mineral aggregate and pitch, in mass parts, described mineral aggregate mass parts is 100 parts, the mass parts of described pitch is 5.3～5.7 parts, described mineral aggregate is comprised of 2%～4% the limestone breeze that accounts for 96%～98% limestone aggregates of mineral aggregate total mass and account for mineral aggregate total mass, and described pitch is the compound of No. 70 bi tumenf orr oads and hard pitch particle; Adopt additive or modifying asphalt to realize modulus from other and improve differently, described asphalt binder all adopts is common matrix pitch (containing No. 70 bi tumenf orr oads and hard pitch particle), has significantly reduced overall cost.
As preferably, the aforesaid weather resistance High Modulus Asphalt Mixture based on hard pitch particle, the mass ratio of described No. 70 bi tumenf orr oads and hard pitch particle is 7:3.
As preferably, the aforesaid weather resistance High Modulus Asphalt Mixture based on hard pitch particle, described limestone aggregates by aggregate size be divided into first group gather materials, second group gather materials, the 3rd group gather materials and the 4th group gather materials four groups, first group of aggregate size is 10～15mm, accounts for 30%～40% of mineral aggregate total mass; Second group of aggregate size is 5～10mm, accounts for 14%～19% of mineral aggregate total mass; The 3rd group of aggregate size is 3～5mm, accounts for 8%～15% of mineral aggregate total mass; The 4th group of aggregate size is 0～3mm, accounts for 30%～37% of mineral aggregate total mass.
As preferably, the aforesaid weather resistance High Modulus Asphalt Mixture based on hard pitch particle, the grading limit of described mineral aggregate is, and aperture is 13.2mm, and passing ratio is 90%～100%; Aperture is 4.75mm, and passing ratio is 40%～60%; Aperture is 2.36mm, and passing ratio is 25%～38%; Aperture is 0.075mm, and passing ratio is 6%～8%.
The aforesaid weather resistance High Modulus Asphalt Mixture based on hard pitch particle, the index of described No. 70 bi tumenf orr oads and the composite rear pitch of hard pitch particle reaches respectively: (25 ℃ of penetration degrees, 5s, 100g) be 10～15(0.1mm), 64 ℃ of softening temperatures, kinetic viscosity (60 ℃) 3390pa*s; Wherein said No. 70 bi tumenf orr oads and hard pitch particle are re-dubbed No. 15 pitches as agglutinate, also can when compound mix, hard pitch particle and No. 70 bi tumenf orr oads be dropped into and carry out mix with set ratio, both be completed in mix process composite.
The aforesaid weather resistance High Modulus Asphalt Mixture based on hard pitch particle, described asphalt gyratory compaction part thickness is 6～12cm.
The aforesaid weather resistance High Modulus Asphalt Mixture based on hard pitch particle, the gyratory compaction test specimen voidage VV of described asphalt is 1.0%～4.0%.
The aforesaid weather resistance High Modulus Asphalt Mixture based on hard pitch particle, 30000 corresponding wheel tracking test deformation rate≤7.5% of described asphalt France's wheel tracking test operation.
The aforesaid weather resistance High Modulus Asphalt Mixture based on hard pitch particle, described asphalt is indirect tensile stiffness modulus ITSM>15000MP under 15 ℃ of envrionment temperatures, indirect tensile stiffness modulus ITSM>12000MPa under 20 ℃ of envrionment temperatures.
By technique scheme, the weather resistance High Modulus Asphalt Mixture that the present invention is based on hard pitch particle at least has following advantages:
The present invention mainly adopts No. 70 bi tumenf orr oads and hard pitch particle, 7:3's is re-dubbed pitch No. 15 in mass ratio, as bituminous cements, improve mineral aggregate gradation simultaneously, make coarse aggregate form good skeleton structure, to improve shearing resistance and the compressive property of compound, and improve the performance of asphalt mastic in compound by adding appropriate breeze, make mineral aggregate surface there is suitable asphalt membrane thickness etc., compound high-temperature behavior of the present invention is good thus, easily compacting, anti-fatigue performance and endurance quality are excellent, be used in surface layer in road and can improve the damaged abilities such as road surface opposing rut, reduce construction costs, prolonging service life of pavement and maintenance cycle.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to better understand technique means of the present invention, and can be implemented according to the content of specification sheets, below with preferred embodiment of the present invention, is described in detail as follows.
Embodiment
For further setting forth the present invention, reach technique means and the effect that predetermined goal of the invention is taked, its embodiment of weather resistance High Modulus Asphalt Mixture, feature and effect thereof based on hard pitch particle to proposing according to the present invention, be described in detail as follows.
Embodiment 1
The present embodiment asphalt mainly by the mineral aggregate of 100 mass parts, two kinds of components of the pitch of 5.4 mass parts form, pitch is by No. 70 bi tumenf orr oads and composite (No. 70 bi tumenf orr oads: hard pitch particle=7:3) of hard pitch particle of China Petrochemical Industry, mineral aggregate comprises limestone aggregates and limestone breeze, the quality of limestone aggregates and limestone breeze does not account for 96.5% and 3.5% of mineral aggregate quality, and limestone aggregates is divided into four groups by aggregate size and gathers materials: first group of aggregate size: 10～15mm; Second group of aggregate size: 5～10mm; The 3rd group of aggregate size: 3～5mm; The 4th group of aggregate size: 0～3mm, the per-cent that above-mentioned four groups of quality of gathering materials account for mineral aggregate total mass is followed successively by: 30%, 19%, 14.5%, 33%, the effective density ρ of total mineral aggregate
g=2.702g/cm
3, its grating is as table 1.
Table 1 grating table
The mineral aggregate configuring by above-mentioned grating is put into mixing building (whipping device), then add No. 70 bi tumenf orr oads and hard pitch particle (adding mass ratio 7:3), stir and within 55～65 seconds, obtain asphalt.
The above-mentioned asphalt obtaining is carried out to the test of following correlated performance:
1) gyratory compaction test
Above-mentioned asphalt is made to the test specimen of Φ 150mm, and according to the technical requirements of the gyratory compaction test of asphalt being rotated to compaction test in French relevant criterion, test-results gathers as table 2.
Table 2 gyratory compaction test result
2) French wheel tracking test
It is 180 * 100mm that asphalt is made long cross section
2, height is the test specimen of 500mm four prism type, follow according to relevant criterion, when test specimen reaches 60 ℃ of test temperatures, when test specimen stands the load cycle index 100 of appointment, 300,1000,3000,10000,30000, the running of arrestment, measures the rut degree of depth of 15, and result is as shown in table 3.
The French wheel tracking test result of table 3
3) ITSM of tensile stiffness modulus test indirectly
The asphalt of the present embodiment is carried out to modulus test, it with rotary compactor, by method mark forming height, is first the test specimen of 12cm left and right, with corning machine, from test specimen, take out the core that diameter is Φ 100mm, then cut out with double-side saw the test test specimen that meets requirement for height 50mm.Adopt compound testing machine for mechanical properties to carry out the ITSM modulus test of 15 ℃ and 20 ℃, test-results is as shown in table 4.
Table 4 ITSM test-results
The ITSM modulus test mean value of its 15 ℃ and 20 ℃ is respectively 17648MPa and 15223MPa, meets technical requirements.
4) water stability testing
Real freeze thawing split test is carried out in requirement according to pitch and Asphalt Mixture Experiment rules (JTJ052-2000), hits real number of times 50 times, the results are shown in Table 5, and the present embodiment has a good water stability ability as can be seen from the test results.
Table 5 freeze thawing split test result
5) girder pliability test
According to the requirement of pitch and Asphalt Mixture Experiment rules (JTJ052-2000) T0715,6 groups of-10 ℃ of low-temperature bending tests have been carried out, result mean value is in Table 6, breaking strain 1925.9 μ ε, higher than standard-required >=1800 μ ε, show the ability with good opposing low-temperature deformation of the compound of the present embodiment.
Table 6 girder pliability test result
6) Chinese wheel tracking test
According to the requirement of pitch and Asphalt Mixture Experiment rules (JTJ052-2000) T0719, at 60 ± 1 ℃, three groups of wheel tracking tests under 0.7 ± 0.05MPa condition, have been carried out, test-results is respectively in Table 7, from test-results shown in this table, can find out, the compound of the present embodiment there is good high temperature stability performance.
Table 7 wheel tracking test dynamic stability
In sum, weather resistance high-modulus EME-14 type asphalt gyratory compaction test, anti-water damage test, wheel tracking test, the small beam experiment, the ITSM modulus test of design all meet correlation technique requirement.Design result proportioning is first group and gathers materials: second group is gathered materials: the 3rd group is gathered materials: the 4th group is gathered materials: breeze=30:19:14.5:33:3.5, and bitumen aggregate ratio is 5.4%, corresponding Asphalt Mixture is as shown in table 8.
Table 8 Asphalt Mixture Design result
| Mixture performance | Design result | Technical requirements |
| Survey maximum relative density | 2.497 | / |
| Bitumen aggregate ratio (%) | 5.4 | / |
| Voidage VV(%) | 1.1 | 1～4 |
| Freeze thawing split test (%) | 97.5 | ≥80 |
| France's wheel tracking test (%) | 5.02 | ≤ 7.5%(30000 time) |
| GB wheel tracking test (inferior/mm) | 3670 | ≥3000 |
| Girder low-temperature bending test (μ ε) | 1925.9 | ≥1800 |
| 15 ℃ of ITSM modulus tests (MPa) | 17648 | 15000 |
| 20 ℃ of ITSM modulus tests (MPa) | 15223 | 12000 |
Compound design and performance test checking, show that gyratory compaction performance, anti-water damage property, high temperature stability performance, modulus properties and the crack resistance at low-temperature of designed weather resistance High Modulus Asphalt Mixture all meets the demands.
Embodiment 2
The present embodiment asphalt is mainly by the mineral aggregate of 100 mass parts, the pitch of 5.5 mass parts, pitch is comprised of two kinds of components, No. 70 bi tumenf orr oads of the China Petrochemical Industry that petroleum pitch wherein adopts and the composite pitch that obtains No. 15 of hard pitch particle, mineral aggregate comprises limestone aggregates and limestone breeze, the quality of limestone aggregates and limestone breeze accounts for respectively 97% and 3.0% of mineral aggregate quality, and limestone aggregates is divided into four groups by aggregate size and gathers materials: first group of aggregate size: 10～15mm; Second group of aggregate size: 5～10mm; The 3rd group of aggregate size: 3～5mm; The 4th group of aggregate size: 0～3mm, the per-cent that above-mentioned four groups of quality of gathering materials account for mineral aggregate total mass is followed successively by: 38%, 15%, 8%, 36%, the effective density ρ of total mineral aggregate
g=2.713g/cm
3, its grating is as table 9.
Table 9 grating table
Before compound mix first by No. 70 bi tumenf orr oads and hard pitch particle according to mass ratio 7:3, under 150～155 ℃ of conditions, stir 5 minutes, making is the two composite pitch that obtains No. 15.
The mineral aggregate configuring by above-mentioned grating is put into mixing building (whipping device), then adds composite No. 15 pitches that obtain, and stirs and within 55～65 seconds, obtains asphalt.
The above-mentioned asphalt obtaining is carried out to the test of following correlated performance:
1) gyratory compaction test
Above-mentioned asphalt is made to the test specimen of Φ 150mm, and according to the technical requirements of the gyratory compaction test of asphalt being rotated to compaction test in French relevant criterion, test-results gathers as table 10.
Table 10 gyratory compaction test result
2) French wheel tracking test
It is 180 * 100mm that asphalt is made long cross section
2, height is the test specimen of 500mm four prism type, follow according to relevant criterion, when test specimen reaches 60 ℃ of test temperatures, when test specimen stands the load cycle index 100 of appointment, 300,1000,3000,10000,30000, the running of arrestment, measures the rut degree of depth of 15, and result is as shown in table 11.
The French wheel tracking test result of table 11
3) ITSM of tensile stiffness modulus test indirectly
The asphalt of the present embodiment is carried out to modulus test, it with rotary compactor, by method mark forming height, is first the test specimen of 12cm left and right, with corning machine, from test specimen, take out the core that diameter is Φ 100mm, then cut out with double-side saw the test test specimen that meets requirement for height 50mm.Adopt compound testing machine for mechanical properties to carry out the ITSM modulus test of 15 ℃ and 20 ℃, test-results is as shown in table 12.
Table 12 ITSM test-results
The ITSM modulus test mean value of its 15 ℃ and 20 ℃ is respectively 24325MPa and 19192MPa, meets technical requirements.
4) water stability testing
Water stability can be tested and adopt AASHTOT283 test to carry out, and the results are shown in Table 13, and the present embodiment has a good water stability ability as can be seen from the test results.
Table 13 AASHTOT283 test-results
5) girder pliability test
According to the requirement of pitch and Asphalt Mixture Experiment rules (JTJ052-2000) T0715,6 groups of-10 ℃ of low-temperature bending tests have been carried out, result mean value is in Table 14, breaking strain 2646.8 μ ε, higher than standard-required >=1800 μ ε, show the ability with good opposing low-temperature deformation of the compound of the present embodiment.
Table 14 girder pliability test result
6) Chinese wheel tracking test
According to the requirement of pitch and Asphalt Mixture Experiment rules (JTJ052-2000) T0719, at 60 ± 1 ℃, three groups of wheel tracking tests under 0.7 ± 0.05MPa condition, have been carried out, test-results is respectively in Table 15, from test-results shown in this table, can find out, the compound of the present embodiment there is good high temperature stability performance.
Table 15 wheel tracking test dynamic stability
In sum, weather resistance high-modulus EME-14 type asphalt gyratory compaction test, anti-water damage test, wheel tracking test, the small beam experiment, the ITSM modulus test of design all meet correlation technique requirement.Design result proportioning is first group and gathers materials: second group is gathered materials: the 3rd group is gathered materials: the 4th group is gathered materials: breeze=38.0:15.0:8.0:36.0:3.0, and bitumen aggregate ratio is 5.5%, corresponding Asphalt Mixture is shown in table 16.
Table 16 Asphalt Mixture Design result
| Mixture performance | Design result | Technical requirements |
| Survey maximum relative density | 2.502 | / |
| Bitumen aggregate ratio (%) | 5.5 | / |
| Voidage VV(%) | 3.4 | 1～4 |
| France's anti-wheel tracking test (%) | 3.80 | ≤ 7.5%(30000 time) |
| GB wheel tracking test (inferior/mm) | 5513 | ≥3000 |
| 15 ℃ of ITSM modulus tests (MPa) | 24325 | ≥15000 |
| 20 ℃ of ITSM modulus tests (MPa) | 19192 | ≥12000 |
| Low temperature the small beam experiment flexural strain (μ ε) | 2646.8 | ≥1800 |
| Freeze thawing split test TSR(%) | 87.8 | ≥80 |
By compound, design with performance test and verify, show that anti-water damage property, high temperature stability performance, crack resistance at low-temperature and the modulus properties of designed weather resistance High Modulus Asphalt Mixture all meets the demands.
Embodiment 3
The present embodiment asphalt mainly by the mineral aggregate of 100 mass parts, two kinds of components of the pitch of 5.6 mass parts form, pitch is by No. 70 bi tumenf orr oads and composite (No. 70 bi tumenf orr oads: hard pitch particle=7:3) of hard pitch particle of China Petrochemical Industry, mineral aggregate comprises limestone aggregates and limestone breeze, the quality of limestone aggregates and limestone breeze does not account for 96% and 4% of mineral aggregate quality, and limestone aggregates is divided into four groups by aggregate size and gathers materials: first group of aggregate size: 10～15mm; Second group of aggregate size: 5～10mm; The 3rd group of aggregate size: 3～5mm; The 4th group of aggregate size: 0～3mm, the per-cent that above-mentioned four groups of quality of gathering materials account for mineral aggregate total mass is followed successively by: 36%, 15%, 13%, 33%, the effective density ρ of total mineral aggregate
g=2.709g/cm
3, its grating is as table 17.
Table 17 grating table
The mineral aggregate configuring by above-mentioned grating is put into mixing building (whipping device), then add No. 70 bi tumenf orr oads and hard pitch particle (adding mass ratio 7:3), stir and within 55～65 seconds, obtain asphalt.
The above-mentioned asphalt obtaining is carried out to the test of following correlated performance:
1) gyratory compaction test
Above-mentioned asphalt is made to the test specimen of Φ 150mm, and according to the technical requirements of the gyratory compaction test of asphalt being rotated to compaction test in French relevant criterion, test-results gathers as table 18.
Table 18 gyratory compaction test result
2) French wheel tracking test
It is 180 * 100mm that asphalt is made long cross section
2, height is the test specimen of 500mm four prism type, follow according to relevant criterion, when test specimen reaches 60 ℃ of test temperatures, when test specimen stands the load cycle index 100 of appointment, 300,1000,3000,10000,30000, the running of arrestment, measures the rut degree of depth of 15, and result is shown in table 19.
The French wheel tracking test result of table 19
3) ITSM of tensile stiffness modulus test indirectly
The asphalt of the present embodiment is carried out to modulus test, it with rotary compactor, by method mark forming height, is first the test specimen of 12cm left and right, with corning machine, from test specimen, take out the core that diameter is Φ 100mm, then cut out with double-side saw the test test specimen that meets requirement for height 50mm.Adopt compound testing machine for mechanical properties to carry out the ITSM modulus test of 15 ℃ and 20 ℃.Test-results is shown in table 20.
Table 20 ITSM test-results
The ITSM modulus test mean value of its 15 ℃ and 20 ℃ is respectively 19797MPa and 16400MPa, meets technical requirements.
4) freeze thawing split test
Real freeze thawing split test is carried out in requirement according to pitch and Asphalt Mixture Experiment rules (JTJ052-2000), hits real number of times 50 times, the results are shown in Table 21, and the present embodiment has a good water stability ability as can be seen from the test results.
Table 21 freeze thawing split test result
5) girder pliability test
According to the requirement of pitch and Asphalt Mixture Experiment rules (JTJ052-2000) T0715,6 groups of-10 ℃ of low-temperature bending tests have been carried out, result mean value is in Table 22, breaking strain 1934.1 μ ε, higher than standard-required >=1800 μ ε, show that the compound of the present embodiment has the ability of good opposing low-temperature deformation.
Table 22 girder pliability test result
6) Chinese wheel tracking test
According to the requirement of pitch and Asphalt Mixture Experiment rules (JTJ052-2000) T0719, at 60 ± 1 ℃, three groups of wheel tracking tests under 0.7 ± 0.05MPa condition, have been carried out, test-results is respectively in Table 23, from test-results shown in this table, can find out, the compound of the present embodiment has good high temperature stability performance.
Table 23 wheel tracking test dynamic stability
In sum, weather resistance high-modulus EME-14 type asphalt gyratory compaction test, anti-water damage test, wheel tracking test, the small beam experiment, the ITSM modulus test of design all meet correlation technique requirement.Design result proportioning is first group and gathers materials: second group is gathered materials: the 3rd group is gathered materials: the 4th group is gathered materials: breeze=36.0:15.0:13.0:33.0:3.0, and bitumen aggregate ratio is 5.6%, corresponding Asphalt Mixture is shown in table 24.
Table 24 Asphalt Mixture Design result
| Mixture performance | Design result | Technical requirements |
| Survey maximum relative density | 2.501 | / |
| Bitumen aggregate ratio (%) | 5.6 | / |
| Voidage VV(%) | 2.3 | 1～4 |
| Freeze thawing split test (%) | 97.2 | ≥80 |
| France's wheel tracking test (%) | 4.6 | ≤ 7.5%(30000 time) |
| GB wheel tracking test (inferior/mm) | 4295 | ≥3000 |
| Girder low-temperature bending test (μ ε) | 1934.1 | ≥1800 |
| 15 ℃ of ITSM modulus tests (MPa) | 19797 | 15000 |
| 20 ℃ of ITSM modulus tests (MPa) | 16400 | 12000 |
Compound design and performance test checking, show that gyratory compaction performance, anti-water damage property, high temperature stability performance, modulus properties and the crack resistance at low-temperature of designed weather resistance High Modulus Asphalt Mixture all meets the demands.
The above, it is only preferred embodiment of the present invention, not the present invention is done to any pro forma restriction, although the present invention discloses as above with preferred embodiment, yet not in order to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, when can utilizing the technology contents of above-mentioned announcement to make a little change or being modified to the equivalent embodiment of equivalent variations, in every case be the content that does not depart from technical solution of the present invention, any simple modification of above embodiment being done according to technical spirit of the present invention, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (9)
1. the weather resistance High Modulus Asphalt Mixture based on hard pitch particle, comprise mineral aggregate and pitch, it is characterized in that: in mass parts, described mineral aggregate mass parts is 100 parts, the mass parts of described pitch is 5.3～5.7 parts, described mineral aggregate is comprised of 2%～4% the limestone breeze that accounts for 96%～98% limestone aggregates of mineral aggregate total mass and account for mineral aggregate total mass, and described pitch is the compound of No. 70 bi tumenf orr oads and hard pitch particle.
2. the weather resistance High Modulus Asphalt Mixture based on hard pitch particle according to claim 1, is characterized in that: the mass ratio of described No. 70 bi tumenf orr oads and hard pitch particle is 7:3.
3. the weather resistance High Modulus Asphalt Mixture based on hard pitch particle according to claim 1, it is characterized in that: described limestone aggregates by aggregate size be divided into first group gather materials, second group gather materials, the 3rd group gather materials and the 4th group gather materials four groups, first group of aggregate size is 10～15mm, accounts for 30%～40% of mineral aggregate total mass; Second group of aggregate size is 5～10mm, accounts for 14% ~ 19% of mineral aggregate total mass; The 3rd group of aggregate size is 3～5mm, accounts for 8% ~ 15% of mineral aggregate total mass; The 4th group of aggregate size is 0～3mm, accounts for 30%～37% of mineral aggregate total mass.
4. according to the weather resistance High Modulus Asphalt Mixture based on hard pitch particle described in claim 1 ~ 3 any one, it is characterized in that: the grading limit of described mineral aggregate is, aperture is 13.2mm, and passing ratio is 90%～100%; Aperture is 4.75mm, and passing ratio is 40% ~ 60%; Aperture is 2.36mm, and passing ratio is 25% ~ 38%; Aperture is 0.075mm, and passing ratio is 6%～8%.
5. the weather resistance High Modulus Asphalt Mixture based on hard pitch particle according to claim 1, it is characterized in that: the index of described No. 70 bi tumenf orr oads and the composite rear pitch of hard pitch particle reaches respectively: (25 ℃ of penetration degrees, 5s, 100g) be 10 ~ 15(0.1mm), 64 ℃ of softening temperatures, kinetic viscosity (60 ℃) 3390 pa*s.
6. according to the weather resistance High Modulus Asphalt Mixture based on hard pitch particle described in claim 1 ~ 3 any one, it is characterized in that: described asphalt gyratory compaction part thickness is 6 ~ 12cm.
7. according to the weather resistance High Modulus Asphalt Mixture based on hard pitch particle described in claim 1 ~ 3 any one, it is characterized in that: the gyratory compaction test specimen voidage VV of described asphalt is 1.0%～4.0%.
8. according to the weather resistance High Modulus Asphalt Mixture based on hard pitch particle described in claim 1 ~ 3 any one, it is characterized in that: 30000 corresponding wheel tracking test deformation rate≤7.5% of described asphalt France's wheel tracking test operation.
9. according to the weather resistance High Modulus Asphalt Mixture based on hard pitch particle described in claim 1 ~ 3 any one, it is characterized in that: described asphalt is indirect tensile stiffness modulus ITSM>15000MP under 15 ℃ of envrionment temperatures indirect tensile stiffness modulus ITSM>12000MPa under 20 ℃ of envrionment temperatures.
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| CN109231892A (en) * | 2018-10-09 | 2019-01-18 | 中国石油化工股份有限公司 | A kind of weather-proof particulate formula chromatic cementing agent mixture |
| CN109437677A (en) * | 2018-12-27 | 2019-03-08 | 贵州省都匀公路管理局 | A kind of supporting material and preparation method thereof for sub-surface |
| 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 |
| CN113666666A (en) * | 2021-08-09 | 2021-11-19 | 江苏省交通工程建设局 | High-doping-amount high-modulus regenerated asphalt mixture and preparation method and application thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105648910A (en) * | 2016-03-25 | 2016-06-08 | 苏交科集团股份有限公司 | Durable cement concrete bridge deck pavement structure with noise reduction and water drainage functions |
| CN107976370A (en) * | 2017-11-28 | 2018-05-01 | 中交第公路勘察设计研究院有限公司 | The pitch selection method of High Modulus Asphalt Mixture |
| CN109231892A (en) * | 2018-10-09 | 2019-01-18 | 中国石油化工股份有限公司 | A kind of weather-proof particulate formula chromatic cementing agent mixture |
| CN109437677A (en) * | 2018-12-27 | 2019-03-08 | 贵州省都匀公路管理局 | A kind of supporting material and preparation method thereof for sub-surface |
| CN109437677B (en) * | 2018-12-27 | 2021-06-22 | 贵州省都匀公路管理局 | Reinforcing material for pavement base 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 |
| CN113666666A (en) * | 2021-08-09 | 2021-11-19 | 江苏省交通工程建设局 | High-doping-amount high-modulus regenerated asphalt mixture and preparation method and application thereof |
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