CN104849154B - The recognition methods of fatigue failure occurs for pitch under dynamic shearing load action - Google Patents
The recognition methods of fatigue failure occurs for pitch under dynamic shearing load action Download PDFInfo
- Publication number
- CN104849154B CN104849154B CN201510234015.9A CN201510234015A CN104849154B CN 104849154 B CN104849154 B CN 104849154B CN 201510234015 A CN201510234015 A CN 201510234015A CN 104849154 B CN104849154 B CN 104849154B
- Authority
- CN
- China
- Prior art keywords
- pitch
- strain
- fatigue
- test
- dynamic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The recognition methods of fatigue failure occurs for pitch under dynamic shearing load action, and it is related to the test method that a kind of application dynamic shear rheometer tests road asphalt fatigue behaviour.It solves the discrimination on fatigue failure critical point in current pitch accelerated fatigue test, improves and improve the scientific and effective property of the test data analyzer process.Accelerated fatigue test data of the present invention to pitch under virtual strain coordinate are analyzed, it can carry out the generation and accumulation of quantitative analysis fatigue damage by calculating the virtual strain that material is stored in process of the test, finally propose that the critical point criterion of fatigue failure is occurred into as pitch for the peak point for storing virtual strain energy.
Description
Technical field
The invention belongs to building material field, it is related to one kind and judges that road asphalt occurs under dynamic shearing load action
The recognition methods of fatigue failure.
Background technology
Bituminous paving has a strong impact on because the fatigue crack on fatigue cracking, road surface can occur for the repeated action for wheel load of driving a vehicle
The comfortable and safe of road travel.The good and bad ability for bituminous paving resisting fatigue crack of pitch anti-fatigue performance has
Important contribution, it is therefore desirable to which science, the effective anti-fatigue performance to different pitches material are evaluated and distinguished.Control should
The linear amplitude scan test (i.e. linear strain scan test) of change is that conventional pitch accelerates fatigue specification examination in the world at present
Proved recipe method[1], after this method was proposed from 2010, the critical point discrimination of fatigue failure occurs on pitch in process of the test
Research state is constantly in, the quality of different pitches anti-fatigue performance is characterized and distinguish also without good index and parameter.
The content of the invention
The purpose of the present invention is that the critical point that fatigue failure occurs for pitch accelerated fatigue test process in which materials is sentenced
Disconnected and identification, so that fatigue life of the quantitative comparison different pitches material under dynamic shearing load action.The tool of the present invention
Body implementation process and analysis method are as follows.
The recognition methods of fatigue failure occurs for pitch under dynamic shearing load action, it is characterised in that apply dynamic shearing stream
Become instrument to parallel-plate bitumen samples at 5 DEG C~30 DEG C any temperature, the linear amplitude scan test of completion controlled strain, dynamic
The scanning range of strain amplitude linearly increases to 30% from 0.1%, and dynamic load frequency is 10Hz, and sweep time is designed as 5-15
Minute；Then according to the shear stress τ and shear strain γ data collected in experiment, empty shear strain γ is calculatedRIndex
The virtual strain energy index W stored with material in process of the testR s；Finally, virtual strain energy W will be stored in process of the testR sPeak value
Point is as the critical point of pitch fatigue failure, and the CYCLIC LOADING times N corresponding to this feature point is pitch in this temperature, loading
Fatigue life N under frequency and loading speedf。
Further, different loading speeds, same strain are produced by changing the sweep time of linear strain scan test
Under the conditions of scanning range, test temperature and loading frequency, the pitch fatigue life recognized under different loading speeds is also by difference.
Further, sweep time is designed as 5 minutes.
Further, sweep time is designed as 10 minutes or 15 minutes.
More specifically：
(1) application dynamic shear rheometer carries out linear strain scan test to parallel-plate bitumen samples, according to the experiment
Code requirement[1], shear strain is from 0.1% linear increase to 30%, and experiment loading frequency is fixed as 10Hz, and test temperature can
5 DEG C~30 DEG C any temperature are selected, sweep time is designed as 5 minutes.
(2) by controlling sweep time to change the dynamic shearing loading speed applied in process of the test, keeping
Strain sweep scope, test temperature and with loading frequency it is constant under conditions of, the present invention also carried out sweep time for 10 minutes
With the contrast test of 15 minutes.
(2) after the completion of testing, test data is analyzed according to following program；
I. shear strain (γ) data collected according to dynamic shear rheometer calculate empty shear strain according to formula (1)
(γR) index, wherein | G*|0For the line viscoplasticity dynamic of the bitumen samples not damaged state under this specified temp and loading frequency
Modulus of shearing, can be tested and obtained by before linear strain scan test small strain single-point dynamic test；
γR=γ | G*|0 (1)
Ii. shear stress (τ) data collected to dynamic shear rheometer are in empty shear strain (γR) carry out under coordinate
Analysis, as shown in accompanying drawing 1；The virtual strain stored according to formula (2) to material in each data point calculation process of the test can (WR s)
Dotted portion area in index, i.e. accompanying drawing 1；
Iii. can (W to calculate obtained storage virtual strainR s) numerical value be ordinate, to bitumen samples apply CYCLIC LOADING
Number of times (N) is mapped for abscissa, as shown in accompanying drawing 2, takes WR sThe critical point of fatigue failure occurs as pitch for peak point, you can really
It is scheduled on the fatigue life (N of bitumen samples under this specified temp, loading frequency and loading speedf)。
(3) it will be determined in the shear stress (τ) and CYCLIC LOADING number of times (N) graph of a relation that dynamic shear rheometer is collected
Fatigue life (Nf) be labeled, as shown in accompanying drawing 3.
Bibliography
[1]Standard Method of Test for Estimating Damage Tolerance of Asphalt
Binders Using the Linear Amplitude Sweep[S].American Association of State
Highway and Transportation Officials(AASHTO)TP 101-14.
Brief description of the drawings
Fig. 1 is the sign of analysis and storage virtual strain energy of the pitch accelerated fatigue test data under virtual strain coordinate
Fig. 2 is the EVOLUTION ANALYSIS of storage virtual strain energy during pitch accelerated fatigue test
Fig. 3 is the typical recognition result of pitch fatigue failure critical point during accelerated fatigue test
Fig. 4 be sweep time be 5 minutes when matrix pitch and SBS modified pitch occur fatigue failure identification contrast
Fig. 5 be sweep time be 10 minutes when matrix pitch and SBS modified pitch occur fatigue failure identification contrast
Fig. 6 be sweep time be 15 minutes when matrix pitch and SBS modified pitch occur fatigue failure identification contrast
Fig. 7 is the contrast between fatigue life determined by pitch accelerated fatigue test and pitch actual fatigue life
Embodiment
Embodiment one：In present embodiment, entered using matrix pitch and SBS modified pitch (abbreviation SBS pitches)
The accelerated fatigue test of row controlled strain, 19 DEG C of test temperature, test frequency 10Hz, linear strain scanning range be 0.1%~
30%, sweep time is designed as completing for 5 minutes.After off-test, recognize that two kinds of pitches exist according to the flow of above-mentioned data analysis
Respective fatigue life under this operating mode, shown in recognition result as accompanying drawing 4.
Embodiment two：Present embodiment and embodiment one be not both the scanning of linear strain scanning when
Between be designed as 10 minutes, it is other identical with embodiment one.Shown in recognition result as accompanying drawing 5.
Embodiment three：Present embodiment and embodiment one be not both the scanning of linear strain scanning when
Between be designed as 15 minutes, it is other identical with embodiment one.Shown in recognition result as accompanying drawing 6.
Embodiment four：Present embodiment is not both with embodiment one to embodiment three, pitch material used
Expect for TP polymer modified asphalts (abbreviation TP pitches) and rubber powder examination modified pitch (abbreviation rubber asphalt), test temperature, should
Become scanning range and loading frequency is identical with embodiment one to three, sweep time has been carried out respectively for 5 minutes, 10 minutes and 15
The accelerated fatigue test of minute.
By accelerated fatigue test recognition result and pitch of the four kinds of pitches in above-mentioned embodiment under different loading speeds
Actual fatigue life (repeated strain level is 5% and 7%) is contrasted in fig. 7, it can be seen that different loading speeds
Fatigue life and actual fatigue life (5% repeated strain and 7% repeated strain) that lower pitch accelerated fatigue test is recognized
The anti-fatigue performance sequence for having pitch under good relevance, different loading environments maintains consistent, it was demonstrated that pin of the present invention
The scientific and effective property of the pitch fatigue failure recognition methods proposed to accelerated fatigue test.
Claims (4)
1. the recognition methods of fatigue failure occurs for pitch under dynamic shearing load action, it is characterised in that apply dynamic shear rheological
Instrument at 5 DEG C~30 DEG C any temperature, completes the linear amplitude scan test of controlled strain to parallel-plate bitumen samples, and dynamic should
The scanning range for becoming amplitude linearly increases to 30% from 0.1%, and dynamic load frequency is 10Hz, and sweep time is designed as 5-15 points
Clock；
The shear strain γ data collected according to dynamic shear rheometer calculate empty shear strain γ according to formula (1)RIndex,
Wherein | G*|0For the line viscoplasticity dynamic shear modulus of the bitumen samples not damaged state under this specified temp and loading frequency, lead to
The small strain single-point dynamic test crossed before linear strain scan test is tested and obtained；
γR=γ | G*|0 (1)
The shear stress τ data collected to dynamic shear rheometer are in empty shear strain γRAnalyzed under coordinate, according to public affairs
The virtual strain energy W that formula (2) is stored to material in each data point calculation process of the testR sIndex；
<mrow>
<msub>
<msup>
<mi>W</mi>
<mi>R</mi>
</msup>
<mi>s</mi>
</msub>
<mo>=</mo>
<mfrac>
<mn>1</mn>
<mn>2</mn>
</mfrac>
<mo>&CenterDot;</mo>
<mi>&tau;</mi>
<mo>&CenterDot;</mo>
<msup>
<mi>&gamma;</mi>
<mi>R</mi>
</msup>
<mo>-</mo>
<mo>-</mo>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>2</mn>
<mo>)</mo>
</mrow>
</mrow>
To calculate obtained storage virtual strain energy WR sNumerical value is ordinate, is horizontal stroke to the CYCLIC LOADING times N that bitumen samples apply
Coordinate is mapped, and takes WR sThe critical point of fatigue failure, the CYCLIC LOADING times N corresponding to the critical point occur as pitch for peak point
As fatigue life N of the pitch under this temperature, loading frequency and loading speedf。
2. the recognition methods of fatigue failure, its feature occur for pitch under dynamic shearing load action according to claim 1
It is to produce different loading speeds, same strain scanning range, examination by the sweep time for changing linear strain scan test
Test under the conditions of temperature and loading frequency, the pitch fatigue life recognized under different loading speeds is also by difference.
3. the recognition methods of fatigue failure, its feature occur for pitch under dynamic shearing load action according to claim 1
It is that sweep time is designed as 5 minutes.
4. the recognition methods of fatigue failure, its feature occur for pitch under dynamic shearing load action according to claim 1
It is that sweep time is designed as 10 minutes or 15 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510234015.9A CN104849154B (en) | 2015-05-10 | 2015-05-10 | The recognition methods of fatigue failure occurs for pitch under dynamic shearing load action |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510234015.9A CN104849154B (en) | 2015-05-10 | 2015-05-10 | The recognition methods of fatigue failure occurs for pitch under dynamic shearing load action |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104849154A CN104849154A (en) | 2015-08-19 |
| CN104849154B true CN104849154B (en) | 2017-08-25 |
Family
ID=53848965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510234015.9A Active CN104849154B (en) | 2015-05-10 | 2015-05-10 | The recognition methods of fatigue failure occurs for pitch under dynamic shearing load action |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104849154B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105891029B (en) * | 2016-06-30 | 2018-11-23 | 哈尔滨工业大学 | A kind of pitch fatigue behaviour evaluation method based on Theory of Fracture Mechanics |
| CN106568661B (en) * | 2016-11-07 | 2019-06-21 | 株洲时代新材料科技股份有限公司 | A kind of rubber material typical case carries ε~N curve of fatigue under operating condition and tests acquisition methods |
| CN109541192A (en) * | 2018-12-27 | 2019-03-29 | 北京工业大学 | A kind of evaluation method of road asphalt self-healing behavioral trait |
| CN109613221A (en) * | 2018-12-27 | 2019-04-12 | 北京工业大学 | A kind of test method of test road asphalt damage self-healing performance |
| CN116165082B (en) * | 2023-02-24 | 2023-09-19 | 哈尔滨工业大学 | Rapid acquisition method of asphalt strain-fatigue life curve |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102393338A (en) * | 2011-07-26 | 2012-03-28 | 哈尔滨工业大学 | Method for separating influences of fatigue damage and thixotropic factor on asphalt modulus |
| CN102735554A (en) * | 2011-04-11 | 2012-10-17 | 同济大学 | Test method for testing fatigue performance of asphalt binder |
| CN103630450A (en) * | 2013-12-10 | 2014-03-12 | 云南云岭高速公路养护绿化工程有限公司 | Asphalt mixture life prediction method considering fatigue-creep interaction damage effect |
| CN104406866A (en) * | 2014-11-25 | 2015-03-11 | 哈尔滨工业大学 | Method for dividing influence areas of asphalt fatigue performance in stress and strain control modes |
-
2015
- 2015-05-10 CN CN201510234015.9A patent/CN104849154B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102735554A (en) * | 2011-04-11 | 2012-10-17 | 同济大学 | Test method for testing fatigue performance of asphalt binder |
| CN102393338A (en) * | 2011-07-26 | 2012-03-28 | 哈尔滨工业大学 | Method for separating influences of fatigue damage and thixotropic factor on asphalt modulus |
| CN103630450A (en) * | 2013-12-10 | 2014-03-12 | 云南云岭高速公路养护绿化工程有限公司 | Asphalt mixture life prediction method considering fatigue-creep interaction damage effect |
| CN104406866A (en) * | 2014-11-25 | 2015-03-11 | 哈尔滨工业大学 | Method for dividing influence areas of asphalt fatigue performance in stress and strain control modes |
Non-Patent Citations (2)
| Title |
|---|
| Influence of polymer modification on asphalt binder dynamic and steady flow viscosities;F. Cardone 等;《Construction and Building Materials》;20140919;第71卷;第435-443页 * |
| 沥青混合料抗裂性能评价指标的试验研究;刘栋 等;《建筑材料学报》;20120831;第15卷(第4期);第503-507页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104849154A (en) | 2015-08-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104849154B (en) | The recognition methods of fatigue failure occurs for pitch under dynamic shearing load action | |
| Liu et al. | Use of the multiple stress creep recovery (MSCR) test to characterize the rutting potential of asphalt binders: A literature review | |
| Zhang et al. | Using DSR and MSCR tests to characterize high temperature performance of different rubber modified asphalt | |
| Xie et al. | A framework to characterize the healing potential of asphalt binder using the linear amplitude sweep test | |
| Wang et al. | Experimental investigation on aging characteristics of asphalt based on rheological properties | |
| Golalipour | Modification of multiple stress creep and recovery test procedure and usage in specification | |
| Johnson | Estimating asphalt binder fatigue resistance using an accelerated test method | |
| Delgadillo et al. | Why do we need to change G*/sinδ and how? | |
| Wang et al. | Comparison of the fatigue failure behaviour for asphalt binder using both cyclic and monotonic loading modes | |
| CN104849155B (en) | The method that Remaining Service Life for Asphalt Pavement is predicted by core sample fatigue modulus combination property | |
| Zeiada et al. | Review of the Superpave performance grading system and recent developments in the performance-based test methods for asphalt binder characterization | |
| CN103630450A (en) | Asphalt mixture life prediction method considering fatigue-creep interaction damage effect | |
| CN103487333A (en) | Asphalt mixture self-healing capability evaluating method | |
| Bahia et al. | Developments in intermediate temperature binder fatigue specifications | |
| Gao et al. | Gray relational entropy analysis of high temperature performance of bio-asphalt binder and its mixture | |
| Wang et al. | Development of paving performance index system for selection of modified asphalt binder | |
| Zhang et al. | Fatigue response and damage accumulation law of asphalt binder after nonlinear viscoelastic cyclic shear loads | |
| CN114235890B (en) | Asphalt time-temperature sensitivity testing and evaluating method based on dissipation energy change | |
| MansourKhaki et al. | Study of loading waveform, loading duration, rest period and stress level on fatigue life of asphalt mixtures | |
| Lee et al. | Performance-based moisture susceptibility evaluation of warm-mix asphalt concrete through laboratory tests | |
| Sabouri | Development of a unified fatigue failure criterion for asphalt mixtures and its applications to reclaimed asphalt pavement (RAP) mixtures | |
| Wasage et al. | Repeated loading and unloading tests of asphalt binders and mixes | |
| Mensching et al. | Assessing the applicability of rheological parameters to evaluate modified binders | |
| Arabzadeh et al. | The Improvement of Thermal Cracking Resistance and Fatigue Life of RAP-Incorporated Asphalt Mixtures with the Aid of Epoxidized Methyl Soyate (EMS) | |
| Xue et al. | Characterizing fatigue failure behavior of modified asphalt binders from linear amplitude sweep test |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |