CN109085073A - A kind of miscible degree characterizing method of new Bituminous concrete surface based on mixture dynamic modulus - Google Patents
A kind of miscible degree characterizing method of new Bituminous concrete surface based on mixture dynamic modulus Download PDFInfo
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Abstract
The present invention relates to a kind of miscible degree characterizing methods of the new Bituminous concrete surface based on mixture dynamic modulus, test RAP material, matrix pitch, gather materials, the performance indexes of miberal powder；Heated tool butt-welding asphalt is prepared according to existing regeneration specification, prepares test specimen；The dynamic modulus of each test specimen is tested, and draws the dynamic modulus master curve that actual measurement obtains；The Bituminous concrete surface and regenerative agent of different addition quantity are added in matrix pitch, prepares the asphalt mastic of the different miscible degree of new Bituminous concrete surface；DSR test is carried out to different pitches rubber cement respectively, measures composite modulus and the phase angle of each asphalt mastic；It predicts the dynamic modulus of the mixture of different pitches cement state, and draws out dynamic modulus prediction principal curve；Symbolize the miscible degree of new Bituminous concrete surface in each regenerating mixture.The method that the present invention has selected the maximum performance indirectly testing of controllability is studied, and eliminates the influence for mixing and stirring factor, human error and mineral aggregate gradation as far as possible, improves results precision.
Description
Technical field
The invention belongs to pavement construction material preparation technical fields, are related to a kind of new and old drip based on mixture dynamic modulus
Green miscible degree characterizing method.
Background technique
The characterizing method of the miscible degree of new Bituminous concrete surface is roughly divided into two class of macro-test method and microcosmic test method at present,
Macro approach includes two kinds of fractional extraction method, performance indirectly testing method, and microscopic approach includes label binder method and can recognize
The method of difference.These two kinds of methods respectively have advantage and disadvantage, and microcosmic test method test equipment is expensive, complicated for operation, are primarily adapted for use in microcosmic
The research of miscible mechanism；Macro-test method precision is slightly lower, but it is simple to operate comparative approach, can be from macroscopically reflecting miscible journey
Influence of the degree variation to mixture physical performance.
Karlsson and Isacsson carries out infrared light than more sensitive substance using 8 kinds of polystyrene etc. to regenerative agent
Then label is observed the miscible process between Bituminous concrete surface and new pitch, regenerative agent by Fourier infrared spectrograph, is tentatively shown
The influence of temperature and the composed structure of regenerative agent to miscible process.
Yang Yiwen etc. selects 4.75mm sieve pore RAP material below and the new of 9.5mm partial size to gather materials, then addition and old drip
The new pitch of green equivalent mixes and stirs into mixture, then detects the miberal powder content being attached in the upper asphalt mastic that newly gathers materials, thus by again
Ratio of filler bitumen inverse in raw mix goes out the miscible degree between new Bituminous concrete surface.
Huang has carried out four step extraction tests to regenerating mixture, then by comparing the viscosity of each layer pitch and compound
Modulus, and the miscible degree of new Bituminous concrete surface is analyzed in conjunction with the difference of different layers asphalt performance, test result shows new Bituminous concrete surface
Between be strictly in not exclusively miscible state.
The method of McDaniel and Shah reference Bonaquist tests the mixture of different RAP volumes, and discovery is worked as
When RAP volume is lower than 15%, the miscible degree nearly 100% of new Bituminous concrete surface, when RAP volume is higher than 40%, new Bituminous concrete surface is then
It is miscible to be not achieved 100%.
In the Study on Test Method of the miscible degree of new Bituminous concrete surface, numerous scholars are made that many fruitful researchs.
But above-mentioned several method cuts both ways, and can not accurately test out new Bituminous concrete surface really miscible degree.
Number of patent application is that the patent of invention of CN201610503004.0 discloses a kind of measurement heat regeneration asphalt mixture
The test method of new Bituminous concrete surface fusion degree, comprising the following steps: (1) prepare test with working condition is drafted according to mix-design
Material；(2) test material that step (1) is got ready is subjected to mix, separation, recycling and measurement by working condition is drafted；It (3) will step
Suddenly the test result of (2) measurement, is arranged, calculates the fusion degree of new Bituminous concrete surface.The fusion degree is with heat regeneration asphalt
Bituminous concrete surface accounts on the basis of total pitch specific gravity in mixture, and value is bigger, shows that new Bituminous concrete surface fusion degree is better.But the patent is simultaneously
New Bituminous concrete surface really miscible degree cannot be tested out, on the one hand without the control of progress raw material gradation and bitumen content well
On the other hand it is larger to test measurement result error for system.
Summary of the invention
For overcome the deficiencies in the prior art, it is miscible to provide a kind of new Bituminous concrete surface based on mixture dynamic modulus by the present invention
Degree characterizing method, the method for having selected the maximum performance indirectly testing of controllability are studied, and eliminate mix as far as possible
With the influence of factor, human error and mineral aggregate gradation, results precision is improved.
The present invention provides the following technical solutions:
A kind of miscible degree characterizing method of new Bituminous concrete surface based on mixture dynamic modulus, includes the following steps:
Step 1: test RAP material matrix pitch, gathers materials, the performance indexes of miberal powder；
Step 2: heated tool butt-welding asphalt is prepared according to existing regeneration specification, and prepares test specimen；
Step 3: testing the dynamic modulus of each test specimen, and draws the dynamic modulus master curve that actual measurement obtains；
Step 4: being added the Bituminous concrete surface and regenerative agent of different addition quantity in matrix pitch, and it is mixed to prepare new Bituminous concrete surface difference
The asphalt mastic of molten degree；
Step 5: carrying out DSR test to different pitches rubber cement respectively, measures the composite modulus and phase of each asphalt mastic
Angle；
Step 6: it predicts the dynamic modulus with the mixture of different miscible degree asphalt mastic states, and draws and set out
State Modulus Prediction principal curve；
Step 7: the quantitative miscible degree for symbolizing new Bituminous concrete surface in each regenerating mixture.
Preferably, when preparing heated tool butt-welding asphalt in step 2, RAP volume is 40%-60%, mixes and stirs temperature
Being for 150 DEG C -170 DEG C, mixing time no more than 3mins, RAP material preheater temperature is 100 DEG C -120 DEG C.
Any of the above-described scheme is preferably, when preparing heated tool butt-welding asphalt in step 2, RAP volume be 40%,
Mix and stir that temperature is 150 DEG C, mixing time 2mins, RAP material preheater temperature is 100 DEG C.
Any of the above-described scheme is preferably, when preparing heated tool butt-welding asphalt in step 2, RAP volume be 50%,
Mix and stir that temperature is 165 DEG C, mixing time 3mins, RAP material preheater temperature is 110 DEG C.
Any of the above-described scheme is preferably, when preparing heated tool butt-welding asphalt in step 2, RAP volume be 60%,
Mix and stir that temperature is 170 DEG C, mixing time 3mins, RAP material preheater temperature is 120 DEG C.
Any of the above-described scheme is preferably, and in step 2, test specimen is cylinder specimen.
Any of the above-described scheme is preferably, and in step 2, test specimen is the cylinder specimen of high 100mm, diameter 100mm.
Any of the above-described scheme is preferably, and in step 3, the test of the dynamic modulus of test specimen uses uniaxial compression test.
Any of the above-described scheme is preferably, and when uniaxial compression test, test temperature is 20 DEG C, 35 DEG C and 50 DEG C, load frequency
Rate is 0.1Hz, 0.5Hz, 1Hz, 5Hz, 10Hz, 25Hz.
Any of the above-described scheme is preferably, and in step 4, Bituminous concrete surface and the regeneration of different addition quantity are added in matrix pitch
New Bituminous concrete surface 100%, 90%, 80%, the asphalt mastic of 70% 4 kind of miscible degree are prepared in agent.
Any of the above-described scheme is preferably, in step 4, prepare Bituminous concrete surface content be respectively 100%, 90%, 80%,
70% new and old mix asphalt adds suitable miberal powder according to the Ratio of filler bitumen in actual reproduction mixture, after being sufficiently mixed uniformly
Obtain the asphalt mastic of four kinds of miscible degree of the new Bituminous concrete surface of difference.
Any of the above-described scheme is preferably, and asphalt mastic when new Bituminous concrete surface 100% is miscible is the preparation method is as follows: according to again
Total asphalt content 4.4% in raw mix, wherein the ratio of Bituminous concrete surface and new pitch (regenerative agent) is 1.3%:3.1%, then
According to the 1:1.3 in regenerating mixture Ratio of filler bitumen add miberal powder, be sufficiently mixed uniformly after obtain new Bituminous concrete surface 100% it is miscible when
Asphalt mastic.
Any of the above-described scheme is preferably, and the asphalt mastic under the miscible degree of new Bituminous concrete surface 90% is the preparation method is as follows: root
According to the ratio of Bituminous concrete surface and new pitch (regenerative agent), the ratio for obtaining Bituminous concrete surface and new pitch (regenerative agent) is 1.17%:
3.1%, miberal powder is added also according to the Ratio of filler bitumen of 1:1.3, finally obtains the asphalt mastic under the miscible degree of new Bituminous concrete surface 90%.
I.e. according to the ratio (1.3%:3.1%) of Bituminous concrete surface and new pitch (regenerative agent), extract whole Bituminous concrete surface contents 90% is (i.e. old
Pitch additive amount is 1.3% × 90%=1.17%) it is mixed with same new pitch (regenerative agent).
Any of the above-described scheme is preferably, and the asphalt mastic under the miscible degree of new Bituminous concrete surface 80% is the preparation method is as follows: old
The ratio of pitch and new pitch (regenerative agent) is 1.04%:3.1%, and Ratio of filler bitumen 1:1.3,20% replaces for miscible Bituminous concrete surface
At etc. quality miberal powder, obtain the asphalt mastic under the miscible degree of new Bituminous concrete surface 80%.
According to the ratio (1.3%:3.1%) of Bituminous concrete surface and new pitch (regenerative agent), whole Bituminous concrete surface contents are extracted
80% (i.e. Bituminous concrete surface additive amount is 1.3% × 80%=1.04%) mixes with same new pitch (regenerative agent), obtains old drip
The green ratio with new pitch (regenerative agent) is 1.04%:3.1%, adds miberal powder also according to the Ratio of filler bitumen of 1:1.3, finally obtains
Asphalt mastic under the miscible degree of new Bituminous concrete surface 80%.
Any of the above-described scheme is preferably, and the asphalt mastic under the miscible degree of new Bituminous concrete surface 70% is the preparation method is as follows: old
The ratio of pitch and new pitch (regenerative agent) is 0.91%:3.1%, and Ratio of filler bitumen 1:1.3,30% has neither part nor lot in miscible Bituminous concrete surface
It the miberal powder of quality such as is substituted for, obtains the asphalt mastic under the miscible degree of new Bituminous concrete surface 70%.
According to the ratio (1.3%:3.1%) of Bituminous concrete surface and new pitch (regenerative agent), whole Bituminous concrete surface contents are extracted
70% (i.e. Bituminous concrete surface additive amount is 1.3% × 70%=0.91%) mixes with same new pitch (regenerative agent), obtains old drip
The green ratio with new pitch (regenerative agent) is 0.91%:3.1%, adds miberal powder also according to the Ratio of filler bitumen of 1:1.3, finally obtains
Asphalt mastic under the miscible degree of new Bituminous concrete surface 70%.
Any of the above-described scheme is preferably, and in step 5, test temperature is 20 DEG C, 35 DEG C and 50 DEG C in DSR test, scanning
Frequency is 0.1Hz~25Hz.
Any of the above-described scheme is preferably, and in step 5, each asphalt mastic measured is met modulus and phase angle band
Enter improved Hirsch model, formula is as follows, obtains the mixture dynamic modulus containing each asphalt mastic and predicts main song
Line.
In formula:
In formula: E1、E2、EaThe elasticity modulus of spring 1,2, the modulus gathered materials respectively in Burgers model；η1、η2Respectively
For the viscosity for sticking pot 1,2；ω is angular frequency；δ is phase angle；υ is Poisson's ratio；VMA is void in mineral aggregate；VFA is pitch saturation
Degree；WithThe respectively dynamic modulus and dynamic shear modulus of asphalt mastic.
Any of the above-described scheme is preferably, and in step 6, improved Hirsch model is quoted, by answering for each asphalt mastic
It closes the relevant parameters such as modulus of shearing and phase angle and brings in Hirsch model the dynamic modulus for predicting mixture into.
Any of the above-described scheme is preferably, in step 7, using the dynamic modulus master curve of prediction as reference line, with actual measurement
Dynamic modulus master curve compare, the quantitative miscible degree for symbolizing new Bituminous concrete surface in each regenerating mixture.
The utility model has the advantages that the present invention provide it is a kind of to the miscible degree characterization side of new Bituminous concrete surface based on mixture dynamic modulus
Method further reduces mine firstly, the present invention carries out Variability Analysis and processing to RAP material in terms of the control of raw material
Expect the variability of formate gradation composition；Then, control Bituminous concrete surface content be unitary variant, it is ensured that the variation of mixture modulus only by
The influence changed to bitumen content, and the influence for mixing and stirring factor, human error and mineral aggregate gradation is eliminated as far as possible, improve test
Measuring accuracy；It is estimated secondly, selection the model of half carries out mixture dynamic modulus, than full experience before or entirely
Theoretical model is more accurate；Finally, the dynamic modulus master curve of actual measurement is taken to compare with the mixture principal curve estimated, benefit
With being compared the miscible degree that more can accurately symbolize new Bituminous concrete surface in mixture between principal curve.The present invention to the greatest extent may be used
The influence of factor, human error and mineral aggregate gradation is mixed and stirred in the elimination of energy, improves results precision.
Detailed description of the invention
Fig. 1 is the formate gradation composition curve graph of mixture；
Fig. 2 is the actual measurement dynamic modulus master curve of 50%RAP volume regenerating mixture；
Fig. 3 is the dynamic modulus master curve of each regenerating mixture prediction；
Fig. 4 is the dynamic modulus master curve characterization of regenerating mixture prediction.
Specific embodiment
In order to further appreciate that technical characteristic of the invention, the present invention is explained in detail combined with specific embodiments below
It states.Embodiment only has illustrative effect to the present invention, without the effect of any restrictions, those skilled in the art
The modification for any unsubstantiality made on the basis of the present invention, all should belong to protection scope of the present invention.
Below in conjunction with specific example, the present invention will be further described, but the contents of the present invention be not limited solely to it is following
Embodiment.
By taking the reclaimed asphalt mixture of 50%RAP volume as an example.
(1) regenerating mixture of AC-16 type 50%RAP volume, Bituminous concrete surface, matrix pitch (AH-70 road petroleum drip are prepared
It is green), A type regenerative agent, gather materials, the performance indicator of miberal powder is shown in Table 1.1~table 1.6 respectively.
The performance test results of 1.1 Bituminous concrete surface of table
1.2 AH-70 pitch basic mechanical design feature test result of table
1.3 regenerative agent performance indicator of table
1.4 fine aggregate performance test results of table
1.5 coarse aggregate performance test results of table
1.6 miberal powder performance test results of table
The technical indicator of AH-70 bi tumenf orr oad meets " standard specification for construction and acceptance of highway asphalt pavement " (JTG F40-
2004) technical stipulation in relation to No. 70 pitch in.Coarse aggregate, fine aggregate, miberal powder performance indicator be all satisfied that " highway engineering is gathered materials
Testing regulations " relevant regulations in (JTG E42-2005).
(2) according to existing regeneration specification, the reclaimed asphalt mixture is determined according to Marshall mixing proportion design method
Asphalt optimum content.Formate gradation composition is as shown in Figure 1.
According to practical engineering experience primary election bitumen content, using the asphalt content of primary election as intermediate value, the asphalt content of primary election is
4.3%, take 5 kinds of asphalt contents by 0.5% variable gradient, asphalt content is respectively 3.3%, 3.8%, 4.3%, 4.8%,
5.3%, it then makes marshal piece (cylinder specimen that marshal piece is high 100mm, diameter 100mm) and carries out every body
The test of product index, the asphalt optimum content for finally measuring reclaimed asphalt mixture under 50%RAP volume is 4.4%.
(3) firstly, the dynamic modulus of actual measurement regenerating mixture, then draws out the main song of dynamic modulus according to each dynamic modulus
Line.The present invention uses uniaxial compression test according to specification, using 20 DEG C, 35 DEG C and 50 DEG C three kinds of test temperatures and 0.1Hz,
Six loading frequencies of 0.5Hz, 1Hz, 5Hz, 10Hz, 25Hz, and draw to regenerate under 50%RAP volume respectively according to test result and mix
The dynamic modulus master curve of material is closed, reference temperature is 35 DEG C, and it is as shown in Figure 2 to draw log-log coordinate.
(4) asphalt mastic that Bituminous concrete surface content is respectively 100%, 90%, 80%, 70% is prepared.The system of asphalt mastic
Standby process is as follows: the 1. preparation of the miscible degree asphalt mastic of new Bituminous concrete surface 100%: using first, in accordance with pitch total in regenerating mixture
Amount 4.4%, wherein the ratio of Bituminous concrete surface and new pitch (regenerative agent) is 1.3%:3.1%, finally according in regenerating mixture
The Ratio of filler bitumen of 1:1.3 adds miberal powder, obtained after being sufficiently mixed uniformly new Bituminous concrete surface 100% it is miscible when asphalt mastic；2. new and old
The preparation of the miscible degree asphalt mastic of pitch 90%: according to the ratio of Bituminous concrete surface and new pitch (regenerative agent), 90% volume is selected
Bituminous concrete surface mixed with same new pitch and regenerative agent, i.e., the ratio of Bituminous concrete surface and new pitch (regenerative agent) be 1.17%:
3.1%, miberal powder is added also according to the Ratio of filler bitumen of 1:1.3, finally obtains the asphalt mastic under the miscible degree of new Bituminous concrete surface 90%；
3. the preparation of the miscible degree asphalt mastic of new Bituminous concrete surface 80%: similarly, the ratio of Bituminous concrete surface and new pitch (regenerative agent) is
1.04%:3.1%, Ratio of filler bitumen 1:1.3 obtain the asphalt mastic under the miscible degree of new Bituminous concrete surface 80%；4. new Bituminous concrete surface
The preparation of 70% miscible degree asphalt mastic: the ratio of Bituminous concrete surface and new pitch (regenerative agent) is 0.91%:3.1%, Ratio of filler bitumen
For 1:1.3, the asphalt mastic under the miscible degree of new Bituminous concrete surface 70% is obtained.
(5) DSR (HR-1 type) test is carried out to four kinds of asphalt mastics respectively, test uses dynamic frequency scanning, test temperature
Degree is 20 DEG C, 35 DEG C and 50 DEG C, and scan frequency is 0.1Hz~25Hz.Each asphalt mastic measured is met into modulus and phase
Improved Hirsch model is brought at angle into, and formula obtains the mixture dynamic modulus prediction containing each asphalt mastic as shown in 1-1
Principal curve, as shown in Figure 3.
In formula:
In formula: E1、E2、EaThe elasticity modulus of spring 1,2, the modulus gathered materials respectively in Burgers model；η1、η2Respectively
For the viscosity for sticking pot 1,2；ω is angular frequency；δ is phase angle；υ is Poisson's ratio；VMA is void in mineral aggregate；VFA is pitch saturation
Degree；WithThe respectively dynamic modulus and dynamic shear modulus of asphalt mastic.
(6) it using the dynamic modulus master curve of prediction as reference line, is compared with the dynamic modulus master curve of actual measurement, it is fixed
The miscible degree for symbolizing new Bituminous concrete surface in each regenerating mixture of amount.Characteristic manner is as shown in Figure 4.
The dynamic modulus master curve that the principal curve that diamond block represents in Fig. 4 obtains as actual measurement, remaining four (circular blocks, three
Angle piece, rectangular block represent) obtained dynamic modulus is predicted as the principal curve of grey, due to surveying obtained principal curve and prediction
The line position of obtained principal curve is not parallel relation, so this research is using the side for taking two-end-point to do interpolation and then be averaged
Method characterizes miscible degree.According to interpolation relationship, i.e., the principal curve of four grey successively represents 70% from top to bottom, 80%,
90%, 100%, and the location of terminal A is 71%, terminal B present position is 78%, so obtaining terminal A is 71%, end
Point B is 78%, is averaged to obtain the regenerating mixture of 50%RAP volume at 165 DEG C and mixes and stirs new and old drip inside it under mode
Green miscible degree is 74.5%.
Similarly, by taking the regenerating mixture of 30% and 40%RAP volume as an example, method as described above is at 165 DEG C
The miscible degree for mixing and stirring new Bituminous concrete surface inside mixture under mode is respectively 92.5%, 86.0%.
For the present invention firstly, in terms of the control of raw material, the present invention carries out Variability Analysis and processing to RAP material, into
One step reduces the variability of mineral aggregate formate gradation composition；Then, the content for controlling Bituminous concrete surface is unitary variant, it is ensured that mixture mould
The variation of amount is only influenced by bitumen content variation, and eliminates mix and stir factor, human error and mineral aggregate gradation as far as possible
It influences, improves results precision；It is estimated secondly, selection the model of half carries out mixture dynamic modulus, than before
Full experience or full theoretical model it is more accurate；Finally, the mixture taking the dynamic modulus master curve of actual measurement and estimating
Principal curve compares, and more can accurately symbolize the miscible of new Bituminous concrete surface in mixture using being compared between principal curve
Degree.The present invention eliminates the influence of factor of mixing and stirring, human error and mineral aggregate gradation as far as possible, improves results precision.
It should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it is still
It is possible to modify the technical solutions described in the foregoing embodiments, or some or all of the technical features is carried out
Equivalent replacement；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution various embodiments of the present invention technical side
The range of case.
Claims (10)
1. a kind of miscible degree characterizing method of new Bituminous concrete surface based on mixture dynamic modulus, it is characterised in that: including walking as follows
It is rapid:
Step 1: test RAP material matrix pitch, gathers materials, the performance indexes of miberal powder；
Step 2: heated tool butt-welding asphalt is prepared according to existing regeneration specification, and prepares test specimen；
Step 3: testing the dynamic modulus of each test specimen, and draws the dynamic modulus master curve that actual measurement obtains；
Step 4: the Bituminous concrete surface and regenerative agent of different addition quantity are added in matrix pitch, prepares new Bituminous concrete surface
The asphalt mastic of different miscible degree；
Step 5: DSR test is carried out to different pitches rubber cement respectively, measures the composite modulus of each asphalt mastic
The phase angle and；
Step 6: it predicts the dynamic modulus with the mixture of different miscible degree asphalt mastic states, and draws out dynamic analog
Amount prediction principal curve；
Step 7: the quantitative miscible degree for symbolizing new Bituminous concrete surface in each regenerating mixture.
2. a kind of miscible degree characterizing method of new Bituminous concrete surface based on mixture dynamic modulus as described in claim 1, special
Sign is: it is 150 DEG C -170 that when preparing heated tool butt-welding asphalt in step 2, RAP volume, which is 40%-60%, mixes and stirs temperature
DEG C, the mixing time be no more than 3mins, RAP material preheater temperature be 100 DEG C -120 DEG C.
3. a kind of miscible degree characterizing method of new Bituminous concrete surface based on mixture dynamic modulus as described in claim 1, special
Sign is: in step 2, test specimen is cylinder specimen.
4. a kind of miscible degree characterizing method of new Bituminous concrete surface based on mixture dynamic modulus as described in claim 1, special
Sign is: in step 3, the test of the dynamic modulus of test specimen uses uniaxial compression test.
5. a kind of miscible degree characterizing method of new Bituminous concrete surface based on mixture dynamic modulus as described in claim 1, special
Sign is: when uniaxial compression test, test temperature be 20 DEG C, 35 DEG C and 50 DEG C, loading frequency 0.1Hz, 0.5Hz, 1Hz,
5Hz、10Hz、25Hz。
6. a kind of miscible degree characterizing method of new Bituminous concrete surface based on mixture dynamic modulus as described in claim 1, special
Sign is: in step 4, in matrix pitch be added different addition quantity Bituminous concrete surface and regenerative agent, prepare new Bituminous concrete surface 100%,
90%, the 80%, asphalt mastic of 70% 4 kind of miscible degree.
7. a kind of miscible degree characterizing method of new Bituminous concrete surface based on mixture dynamic modulus as described in claim 1, special
Sign is: in step 4, the new and old mix asphalt that Bituminous concrete surface content is respectively 100%, 90%, 80%, 70% is prepared, according to reality
Ratio of filler bitumen in regenerating mixture adds suitable miberal powder, obtains four kinds of miscible degree of the new Bituminous concrete surface of difference after being sufficiently mixed uniformly
Asphalt mastic.
8. a kind of miscible degree characterizing method of new Bituminous concrete surface based on mixture dynamic modulus as described in claim 1, special
Sign is: in step 5, test temperature is 20 DEG C, 35 DEG C and 50 DEG C in DSR test, scan frequency 0.1Hz-25Hz.
9. a kind of miscible degree characterizing method of new Bituminous concrete surface based on mixture dynamic modulus as described in claim 1, special
Sign is: in step 6, improved Hirsch model is quoted, by phases such as the complex shear modulus of each asphalt mastic and phase angles
It closes parameter and brings in Hirsch model the dynamic modulus for predicting mixture into.
10. a kind of miscible degree characterizing method of new Bituminous concrete surface based on mixture dynamic modulus as described in claim 1, special
Sign is: in step 7, using the dynamic modulus master curve of prediction as reference line, carrying out pair with the dynamic modulus master curve of actual measurement
Than the quantitative miscible degree for symbolizing new Bituminous concrete surface in each regenerating mixture.
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