CN103864352A - Durable high-modulus thermal-regeneration mixture as well as preparation method and applications thereof - Google Patents
Durable high-modulus thermal-regeneration mixture as well as preparation method and applications thereof Download PDFInfo
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- CN103864352A CN103864352A CN201410112499.5A CN201410112499A CN103864352A CN 103864352 A CN103864352 A CN 103864352A CN 201410112499 A CN201410112499 A CN 201410112499A CN 103864352 A CN103864352 A CN 103864352A
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- 239000000203 mixture Substances 0.000 title claims abstract description 46
- 238000011069 regeneration method Methods 0.000 title claims abstract description 17
- 238000002360 preparation method Methods 0.000 title abstract description 13
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 81
- 239000011707 mineral Substances 0.000 claims abstract description 81
- 239000010426 asphalt Substances 0.000 claims abstract description 65
- 239000000463 material Substances 0.000 claims abstract description 53
- 238000012360 testing method Methods 0.000 claims description 49
- 150000001875 compounds Chemical class 0.000 claims description 38
- 238000000034 method Methods 0.000 claims description 28
- 239000002245 particle Substances 0.000 claims description 21
- 230000008929 regeneration Effects 0.000 claims description 14
- 239000011301 petroleum pitch Substances 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 11
- 238000005056 compaction Methods 0.000 claims description 8
- 239000011295 pitch Substances 0.000 claims description 8
- 230000001172 regenerating effect Effects 0.000 claims description 8
- 239000002131 composite material Substances 0.000 claims description 6
- 235000019738 Limestone Nutrition 0.000 claims description 5
- 238000002474 experimental method Methods 0.000 claims description 5
- 239000006028 limestone Substances 0.000 claims description 5
- 238000003776 cleavage reaction Methods 0.000 claims description 2
- 230000007017 scission Effects 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 12
- 238000002156 mixing Methods 0.000 abstract description 3
- 230000002929 anti-fatigue Effects 0.000 abstract description 2
- 239000003208 petroleum Substances 0.000 abstract 5
- 238000010438 heat treatment Methods 0.000 abstract 2
- 238000013461 design Methods 0.000 description 8
- 239000004567 concrete Substances 0.000 description 5
- 238000000465 moulding Methods 0.000 description 5
- BDAGIHXWWSANSR-UHFFFAOYSA-M Formate Chemical compound [O-]C=O BDAGIHXWWSANSR-UHFFFAOYSA-M 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000011339 hard pitch Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 238000007873 sieving Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- JLQUFIHWVLZVTJ-UHFFFAOYSA-N carbosulfan Chemical compound CCCCN(CCCC)SN(C)C(=O)OC1=CC=CC2=C1OC(C)(C)C2 JLQUFIHWVLZVTJ-UHFFFAOYSA-N 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000000192 social effect Effects 0.000 description 1
- 238000013112 stability test Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Road Paving Structures (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to a durable high-modulus thermal-regeneration asphalt mixture, which comprises NO.50 pavement petroleum asphalt, new mineral aggregate and an asphalt pavement recovered material, the ratio of the petroleum asphalt formed by NO.50 pavement petroleum asphalt and used petroleum asphalt to mineral materials formed by the new mineral material and the used mineral material in parts by weight is 100:(5.5-6.5); the percentages of the new mineral material and the used mineral material in the mineral materials are respectively 50%-70% and 30%-50%. A preparation method comprises the following steps: respectively heating the mineral materials and the asphalt pavement recovered material to 190-200DEG C and 100-140DEG C, then mixing for 60-90s, then heating the NO.50 pavement petroleum asphalt the temperature of which is controlled at 165-175DEG C, and then mixing for 60-90s, to obtain the asphalt mixture, the temperature of which is controlled at 165-175DEG C and the abundance coefficient K of which is more than or equal to 3.6. The pavement thickness of the asphalt mixture is 6-17cm. The durable high-modulus thermal-regeneration asphalt mixture has the advantages of good stability, high modulus, excellent anti-fatigue and anti-water damage properties and low cost.
Description
Technical field
The present invention relates to road surfacing material, relate in particular to the hot regenerating mixture of a kind of weather resistance high-modulus, compound method and application.
Background technology
As time goes on, economic fast development and the significantly increase of traffic capacity lay the existing many decades of operation from motorway in China,, many road surfaces have entered the finishing phase, have produced a large amount of milling waste materials with finishing.For saving resource, more focus on the utilization to milling waste material, in recent years along with the widespread use of regeneration techniques, in the actual economic results in society that people produce in concern recycling energy-conservation and old material, how the heat regeneration asphalt mixture of more focusing on interpolation bituminous pavement salvage material has better properties, for example, ensureing to increase bituminous pavement salvage material volume under required performance condition, reduce costs etc.
Summary of the invention
The object of the invention is providing a kind of without any additive of interpolation in the situation that, provide a kind of have good high temperature stability performance, higher modulus, good water stability energy and fatigue performance, and bituminous pavement salvage material volume is large, a kind of weather resistance high-modulus heat regeneration asphalt mixture that cost is low.Its concrete technical scheme is as follows:
Described heat regeneration asphalt mixture, comprise No. 50 bi tumenf orr oads, new mineral aggregates and the bituminous pavement salvage material that comprises old petroleum pitch and old mineral aggregate, the mineral aggregate mass parts being formed by new mineral aggregate and old mineral aggregate is 100:(5.5～6.5 with the ratio of oil pitch quality part that No. 50 bi tumenf orr oads and old petroleum pitch form); It is 50%～70% that new mineral aggregate accounts for mineral aggregate per-cent, and the per-cent that old mineral aggregate accounts for mineral aggregate is 30%～50%; Described mineral aggregate is respectively 50%～65% by the sieving rate of 6.3,4,2,0.063 millimeters of normes Francaises sieve apertures, and 40%～50%, 25%～35%, 5.8%～7.7%.
Described heat regeneration asphalt mixture further designs and is, described new mineral aggregate is limestone.
Described heat regeneration asphalt mixture further designs and is, described limestone mineral aggregate particle diameter is divided into three groups, first group of particle diameter: 0～3mm; Second group of particle diameter: 3～5mm; The 3rd group of particle diameter: 5～16mm; The per-cent that above-mentioned three groups of aggregate qualities account for mineral aggregate total mass is followed successively by 5%～15%, 5%～15%, 35%～55%.
The compound method of described heat regeneration asphalt mixture, comprising: obtain corresponding new mineral aggregate, bituminous pavement salvage material and No. 50 bi tumenf orr oads by described proportion by weight; After the new mineral aggregate of corresponding mass part obtaining by proportioning and bituminous pavement salvage material are heated to respectively to 190～200 DEG C and 100～140 DEG C, drop into mix pot and stir 60～90s, add again corresponding mass part and temperature to be controlled at No. 50 bi tumenf orr oads of 165～175 DEG C, stir again 60～90s, in stirring, note maintaining the temperature at 165～175 DEG C, obtain temperature and be controlled at the described asphalt of 165～175 DEG C and abundance coefficient K >=3.6.
The further design of described compound method is, voidage VV=1.0%～5.0% of the gyratory compaction test specimen of described asphalt, gyratory compaction test specimen adopts the moulding of France/European gyratory compaction standard (EN12697-31), rotary compactor inner corners is set as 0.82 °, outside angle is set as 1 °, rotation times 100 times.
The further design of described compound method is, cleavage strength TSR >=80% that described stability of asphalt mixture can be tested.
The further design of described compound method is, 30000 corresponding rut rate≤7.5% of French wheel tracking test operation of described asphalt.
The further design of described compound method is, the dynamic stability of the Chinese wheel tracking test of described asphalt is greater than 2000 times/mm.
The further design of described compound method is, described asphalt is composite modulus >=14000MPa under 15 DEG C of envrionment temperatures.
The further design of described compound method is, described asphalt is low temperature the small beam experiment flexural strain >=1800 μ ε under the condition of 10 DEG C of temperature environments, speed 50mm/min.
The application of the heat regeneration asphalt mixture that described compound method obtains, described compound compacted depth in the time being laid on road surface is 6～17cm.
By the relatively high aged asphalt of asphalt content is mixed, to be fitted on label be in No. 50 bi tumenf orr oads in the present invention, the oxidation that is equivalent in hard pitch production process and the effect of Blending are produced, the mix asphalt label that makes to reclaim aged asphalt in asphalt pavement material and No. 50 bi tumenf orr oads is relatively low, No. 70 more traditional bi tumenf orr oads, No. 90 bi tumenf orr oads and the more bi tumenf orr oad of high grade are compared, the present invention is by using larger compound abundance coefficient, and then make up weather resistance high-modulus heat regeneration asphalt mixture use relatively hard pitch cause anti-water damage property, cold resistance energy, the deficiency of endurance quality, and by improving mineral aggregate gradation, make coarse aggregate form good skeleton structure, to improve shearing resistance and the compressive property of compound, and do not adjust the performance of regeneration asphalt by additive, thereby obtain one weather resistance high-modulus heat regeneration asphalt mixture cheaply, therefore compound of the present invention has advantage as follows: have good high temperature stability performance, higher modulus, good anti-water damage property and anti-fatigue performance, be used in road deck and can reduce strain and the residual set that under Vehicle Load, bituminous concrete produces, improve the damaged abilities such as road surface opposing rut, prolonging service life of pavement and maintenance cycle, the utilization of the bituminous pavement salvage material of high volume is for preserving the ecological environment, reduce resource exploitation and there is important economy and social effect with waste, simultaneously owing to not using additive to reduce the production cost of reclaimed asphalt mixture.
Embodiment
Below in conjunction with following embodiment, the present invention will be further described.
Compound preparation embodiment
Embodiment 1
First determine the contained component of reclaimed asphalt mixture and the proportioning of the present embodiment preparation, the reclaimed asphalt mixture of the present embodiment is mainly made up of No. 50 bi tumenf orr oads, new mineral aggregate, bituminous pavement salvage materials.Bituminous pavement salvage material wherein comprises old petroleum pitch and old mineral aggregate, therefore in reclaimed asphalt mixture, comprise two class materials, one class is petroleum pitch, one class is mineral aggregate, and this two classes material of petroleum pitch and mineral aggregate all includes corresponding new and old bi-material, in petroleum pitch, comprise i.e. No. 50 bi tumenf orr oads and the old petroleum pitch of young oil pitch, comprise new, old mineral aggregate in mineral aggregate, the mass ratio of the present embodiment Mineral Material and petroleum pitch two class materials is 100:5.7.The extraction test result that bituminous pavement salvage material in the present embodiment does is as table 1, and selects limestone as new mineral aggregate, this new mineral aggregate is divided into three groups, first group of particle diameter: 0～3mm; Second group of particle diameter: 3～5mm; The 3rd group of particle diameter: 5～16mm, the result of sieving by normes Francaises is as table 2.By these three groups new mineral aggregate quality successively by accounting for total mineral aggregate total mass per-cent: 7%, 9%, 44% prepare, new mineral aggregate accounts for total mineral aggregate 60%, and old new mineral aggregate accounts for total mineral aggregate 40%, the effective density ρ of total mineral aggregate
g=2.691g/cm
3, when normes Francaises sieve aperture by 6.3,4,2,0.063 millimeters of apertures, corresponding passing ratio is followed successively by 54.4%, 42.8%, 32.2%, 6.5%, and concrete formate gradation composition is as table 3.
Table 1 bituminous pavement salvage material extraction test result (French screening standard)
The size analysis result (French screening standard) of the new mineral aggregate of table 2
Table 3 compound synthesizes and joins (method mark)
By the ratio of the mineral aggregate of above-mentioned setting and oil pitch quality and new, old mineral aggregate when the bitumen aggregate ratio of bituminous pavement salvage material can obtain corresponding No. 50 bi tumenf orr oads and new mineral aggregate and bituminous pavement salvage material mass ratio, take respectively corresponding material according to this mass ratio.The bituminous pavement salvage material taking and new mineral aggregate are heated to respectively both mix 60～90s be added again temperature be controlled at No. 50 bi tumenf orr oads of 165～175 DEG C after 100～115 DEG C and 195～200 DEG C, stir again 60～90s, in stirring, note maintaining the temperature at 165～175 DEG C, the temperature that obtains dispatching from the factory is controlled at the calculating of 165～170 DEG C and abundance coefficient K >=3.6(abundance coefficient and sees that mixture performance detects embodiment) described asphalt.
Embodiment 2
The present embodiment and above-mentioned compound preparation embodiment 1 are basic identical, and difference is:
1) mass ratio of the present embodiment Mineral Material and petroleum pitch two class materials is 100:6.0; New and old new mineral aggregate mass ratio is 55:45;
2) in three groups of new mineral aggregates, first group of particle diameter: 0～3mm; Second group of particle diameter: 3～5mm; The 3rd group of particle diameter: 5～16mm; By 5%, 15%, 35% preparing of accounting for mineral aggregate total mass per-cent, new mineral aggregate quality accounts for mineral aggregate total mass 55% successively, and old new mineral aggregate quality accounts for total mineral aggregate total mass 45%;
3) the effective density ρ of total mineral aggregate
g=2.690g/cm
3;
4) while passing through the normes Francaises sieve aperture in 6.3,4,2,0.063 millimeters of apertures, corresponding passing ratio is followed successively by 61.8%, 46.1%, 31.6%, 7.1%, and concrete formate gradation composition is as table 4;
Table 4 compound synthesizes and joins (method mark)
5) bituminous pavement salvage material and new mineral aggregate are warm respectively mixes both after 110～130 DEG C and 195～200 DEG C, mix 60～90s adds temperature to be controlled at No. 50 bi tumenf orr oads of 165～175 DEG C again, stir again 60～90s, in stirring, note maintaining the temperature at 165～175 DEG C of described asphalts that obtain temperature and be controlled at 165～170 DEG C and abundance coefficient K >=3.6.
Embodiment 3
The present embodiment and above-mentioned compound preparation embodiment 1 are basic identical, and difference is:
1) mass ratio of the present embodiment Mineral Material and petroleum pitch two class materials is 100:6.3; New and old new mineral aggregate mass ratio is 70:30;
2) in three groups of new mineral aggregates, first group of particle diameter: 0～3mm; Second group of particle diameter: 3～5mm; The 3rd group of particle diameter: 5～16mm; By 15%, 8%, 47% preparing of accounting for mineral aggregate total mass per-cent, new mineral aggregate quality accounts for mineral aggregate total mass 70% successively, and old new mineral aggregate accounts for mineral aggregate total mass 30%;
3) the effective density ρ of total mineral aggregate
g=2.686g/cm
3;
4) while passing through the normes Francaises sieve aperture in 6.3,4,2,0.063 millimeters of apertures, corresponding passing ratio is followed successively by 52.0%, 41.1%, 28.3%, 6.5%, and concrete formate gradation composition is as table 5;
Table 5 compound synthesizes and joins (method mark)
5) bituminous pavement salvage material and new mineral aggregate are warm respectively mixes both after 125～140 DEG C and 190～195 DEG C, both mix, mix 60～90s adds temperature to be controlled at No. 50 bi tumenf orr oads of 165～175 DEG C again, stir again 60～90s, in stirring, note maintaining the temperature at 165～175 DEG C, the temperature that obtains dispatching from the factory is controlled at the described asphalt of 165～175 DEG C and abundance coefficient K >=3.6.
Mixture performance detects embodiment
The reclaimed asphalt mixture of above-mentioned three example preparations all meets setting index by relevant performance test, and the relevant performance test of asphalt is only described as an example of the embodiment 1 in compound preparation example below.
1) gyratory compaction test
The asphalt of above-mentioned compound preparation embodiment 1 is made to the test specimen of Φ 150mm according to normes Francaises EN12697-31 method, and being rotated compaction test according to the technical requirements of the gyratory compaction test to asphalt in French relevant criterion, test-results gathers as table 6.
Table 6 gyratory compaction test result
2) water stability can be tested
Water stability can be tested and adopt AASHTOT283 test to carry out, and test-results is as shown in table 7, and the water stability of the present embodiment can meet the requirements as can be seen from the test results.
Table 7AASHTOT283 test-results
" non-condition " in table refers to and immerses in (25 ± 0.5) DEG C water and be incubated 2h ± 10min preserving under test specimen room temperature after 48h; " condition " refers to test specimen first at the full water 10-15min of 0.013MPa-0.067MPa vacuum, reach the full water rate of 70%-80%, then keep 16h in (18 ± 3) DEG C, then be incubated (24 ± 1) h in (60 ± 1) DEG C water tank, finally immerse in (25 ± 0.5) DEG C water and be incubated 2h ± 10min.
3) French wheel tracking test
The asphalt of above-mentioned compound preparation embodiment 1 is made to the test specimen of the long 500mm of size, wide 180mm, high 100mm by normes Francaises EN12697-33:2003+A1 method, follow the method according to normes Francaises EN12697-22, after test specimen reaches 60 DEG C of test temperatures, test specimen starts wheel tracking test place 12h-16h in Measuring Device after.When after the load cycle index 300 times, 1000 times, 3000 times, 10000 times, 30000 times that test specimen stands to specify, the running of arrestment, the rut degree of depth result of measuring at 15 is as shown in table 8.The French wheel tracking test result of the present embodiment meets the requirements as can be seen from the test results.
The French wheel tracking test result of table 8
4) GB wheel tracking test
Carry out specimen molding, the long 300mm of test specimen, wide 300mm, thick 50mm by the method for " highway engineering pitch and Asphalt Mixture Experiment code " T0702-2011.At 60 ± 1 DEG C, under 0.7 ± 0.05MPa condition, carry out the high-temperature stability of wheel tracking test with inspection asphalt, rut dynamic stability test the results are shown in Table shown in 9.The GB wheel tracking test result of the present embodiment meets the requirements as can be seen from the test results.
Table 9 wheel tracking test dynamic stability
5) composite modulus
The asphalt of above-mentioned compound preparation embodiment 1 is first rolled under 155 DEG C of temperature environments to the test specimen of growth 500mm, wide 180mm, high 100mm by normes Francaises EN12697-33:2003+A1 method with French rut forming instrument, the test specimen of moulding is obtained to the ladder beam test specimen of two long 250mm, wide 25mm, upper base 25mm, the 56mm that goes to the bottom by normes Francaises EN12697-26 requirement cutting, carry out 15 DEG C of composite modulus tests under environment.Test-results is as shown in table 10.The composite modulus test-results of the present embodiment meets the requirements as can be seen from the test results.
Table 10 composite modulus test-results
6) girder pliability test
Carry out specimen molding, the long 300mm of test specimen, wide 300mm, thick 50mm by the method for " highway engineering pitch and Asphalt Mixture Experiment code " T0702-2011.The test specimen of moulding is obtained to 6 long 250mm by cutting, wide 30mm, the rectangular parallelepiped test specimen of high 35mm, requirement according to pitch and asphalt (JTGE20-2011) T0715 testing regulation is carried out girder pliability test to above-mentioned rectangular parallelepiped test specimen under 10 DEG C of low temperature environments, result mean value is in table 11, breaking strain 2372.5 μ ε, higher than the requirement of standard >=1800 μ ε, show the ability with good opposing low-temperature deformation of the compound of the present embodiment.
Table 11 girder pliability test result
7) abundance coefficient K
According to effective density ρ
gand bitumen aggregate ratio TL
extcalculate abundance coefficient K, abundance coefficient K calculates by following formula:
In formula, TL
ext-bitumen aggregate ratio the ratio of mineral aggregate weight (the pitch weight with), the present embodiment TL
ext=5.7%
100Σ=0.25G+2.3S+12s+135f
G-particle diameter is greater than and accounts for total percentage gathering materials gathering materials of 6.3mm
S-particle diameter accounts for the percentage always gathering materials to gathering materials between 6.3mm at 0.25mm,
S-particle diameter accounts for the percentage always gathering materials to gathering materials between 0.25mm at 0.063mm,
F-particle diameter is less than and accounts for total percentage gathering materials gathering materials of 0.063mm,
α-be intermediate parameters, α=2.65/ ρ
g.
The G=100%-53.7%(6.3mm percent of pass that gathers materials as known from Table 1)=46.3%, the S=53.7%(6.3mm percent of pass that gathers materials)-11.1%(0.25mm the percent of pass that gathers materials)=42.6%, s=11.1%(0.25mm percent of pass)-6.5%(0.063mm the percent of pass that gathers materials)=4.6%, f=6.5%; Obtain abundance coefficient K=3.62>3.6.The asphalt that building stones grating in the present embodiment asphalt and corresponding asphalt content is described and form can meet the requirement of required volume index and pavement performance index.
Compacted depth embodiment when compound is laid on road surface
Embodiment 1
The present embodiment adopts the hot regenerating mixture of weather resistance high-modulus of above-mentioned compound preparation embodiment 1, for for surface layer pavement construction test section under S337 highway maintenance.
This examination paving section adopts the mode of random sampling observation to carry out, and drills through altogether 4 cores.Core height and compactness are as shown in table 12.
Table 12 road surface core height and compactness
Embodiment 2
The present embodiment adopts the hot regenerating mixture of weather resistance high-modulus of above-mentioned compound preparation embodiment 2, for peaceful red highway maintenance upper layer pavement construction test section.
This examination paving section adopts the mode of random sampling observation to carry out, and this examination paving section drills through 3 cores altogether.Core height and compactness are as shown in table 13.
Table 13 road surface core height and compactness
In above-mentioned table: maximum theory density is measured value; Standard density is batching plant sampling shop experiment marshal piece density mean value; Compactness (hair/horse) refers to the ratio of core density and standard density; Compactness (hair/reason) refers to the ratio of core density and maximum theory density.Above-mentioned two compacted depth embodiment explanations, the high heat-flash regenerating mixture of weather resistance is in the time of pavement construction, and when compacted depth is controlled at 6-17cm, its compactness all can meet the index request of setting.
Claims (11)
1. a weather resistance high-modulus heat regeneration asphalt mixture, it is characterized in that comprising No. 50 bi tumenf orr oads, new mineral aggregates and the bituminous pavement salvage material that comprises old petroleum pitch and old mineral aggregate, the mineral aggregate mass parts being formed by new mineral aggregate and old mineral aggregate is 100:(5.5～6.5 with the ratio of the oil pitch quality part being formed by No. 50 bi tumenf orr oads and old petroleum pitch); New mineral aggregate is 50%～70% with accounting for mineral aggregate per-cent, and the per-cent that old mineral aggregate accounts for mineral aggregate is 30%～50%; When described mineral aggregate passes through the normes Francaises sieve aperture in 6.3,4,2,0.063 millimeters of apertures, corresponding passing ratio is 50%～65%, 40%～50%, 25% ~ 35%, 5.8% ~ 7.7% respectively.
2. heat regeneration asphalt mixture according to claim 1, is characterized in that described new mineral aggregate is limestone.
3. heat regeneration asphalt mixture according to claim 2, is characterized in that described limestone mineral aggregate particle diameter is divided into three groups, first group of particle diameter: 0～3mm; Second group of particle diameter: 3～5mm; The 3rd group of particle diameter: 5～16mm; The per-cent that above-mentioned three groups of aggregate qualities account for mineral aggregate total mass is followed successively by 5% ~ 15%, 5% ~ 15%, 35%～55%.
4. according to the compound method of hot regenerating mixture described in claim 1-3 any one, it is characterized in that comprising: obtain corresponding new mineral aggregate, bituminous pavement salvage material and No. 50 bi tumenf orr oads by described proportion by weight; Mix 60～90s after the corresponding mass part mineral aggregate obtaining by proportioning and bituminous pavement salvage material are heated to respectively to 190～200 DEG C and 100～140 DEG C, add again corresponding mass part and temperature to be controlled at No. 50 bi tumenf orr oads of 165～175 DEG C, stir again 60～90s, in stirring, note maintaining the temperature at 165～175 DEG C, obtain temperature and be controlled at the described asphalt of 165～175 DEG C and abundance coefficient K >=3.6.
5. the hot regenerating mixture of weather resistance high-modulus that compound method obtains according to claim 4, is characterized in that voidage VV=1.0%～5.0% of the gyratory compaction test specimen of described asphalt.
6. compound method according to claim 4, is characterized in that cleavage strength TSR >=80% that described stability of asphalt mixture can be tested.
7. compound method according to claim 4, is characterized in that 30000 corresponding rut rate≤7.5% of French wheel tracking test operation of described asphalt.
8. compound method according to claim 4, is characterized in that the dynamic stability of the Chinese wheel tracking test of described asphalt is greater than 2000 times/mm.
9. compound method according to claim 4, is characterized in that described asphalt composite modulus >=14000 MPa under 15 DEG C of envrionment temperatures.
10. compound method according to claim 4, is characterized in that described asphalt low temperature the small beam experiment flexural strain >=1800 μ ε under the condition of 10 DEG C of temperature environments, speed 50mm/min.
11. as described in claim 4-10 the compound method of compound obtain as described in the application of hot regenerating mixture, it is characterized in that described compound compacted depth in the time being laid on road surface is 6 ~ 17cm.
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| CN104176986A (en) * | 2014-08-14 | 2014-12-03 | 山东建筑大学 | Low-noise asphalt pavement mixture and pavement construction quality control method |
| CN105421181A (en) * | 2015-12-09 | 2016-03-23 | 段宝东 | ESA-13 in-place thermal regeneration bituminous mixture |
| CN109241661A (en) * | 2018-09-28 | 2019-01-18 | 武汉市市政建设集团有限公司 | One kind mixing steel slag reclaimed asphalt mixture gradation design method |
| 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 |
| CN116161901A (en) * | 2023-02-22 | 2023-05-26 | 南京交科瑞路技术有限公司 | Durable high-modulus asphalt mixture and preparation method thereof |
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| CN116161901A (en) * | 2023-02-22 | 2023-05-26 | 南京交科瑞路技术有限公司 | Durable high-modulus asphalt mixture and preparation method thereof |
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