CN109541192A - A kind of evaluation method of road asphalt self-healing behavioral trait - Google Patents
A kind of evaluation method of road asphalt self-healing behavioral trait Download PDFInfo
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- CN109541192A CN109541192A CN201811607455.4A CN201811607455A CN109541192A CN 109541192 A CN109541192 A CN 109541192A CN 201811607455 A CN201811607455 A CN 201811607455A CN 109541192 A CN109541192 A CN 109541192A
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
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Abstract
The present invention relates to a kind of evaluation methods of road asphalt self-healing behavioral trait.The road asphalt self-healing behavioral trait evaluation method passes through the pitch self-healing percentage (%H under the conditions of testing different level of damage and intermittent phase durationS), it is based on " damage-interval principle of equal effects ", it is established that the self-healing principal curve of reflection pitch self-healing feature, to characterize the self-healing behavioral trait of road asphalt.This method eliminates the influence of faulted condition and intermittent phase to evaluation result in the evaluation of traditional asphalt self-healing performance, and pass through the obtained self-healing rate (H of pitch self-healing principal curveR) evaluation index can further quantitatively evaluating road asphalt damage self-healing feature.Self-healing performance variation provides technical support during this method compares for different pitches material self-healing performance, the selection of road asphalt material and bituminous pavement are on active service.
Description
Technical field
The invention belongs to the field of building materials, it is related to a kind of characterization for characterizing road asphalt material self-healing behavioral trait
Method.
Background technique
Pitch is currently used primarily in field of road as important construction material, then in bituminous pavement, due to
The fatigue cracking repeated caused by loading is one of the Major Diseases on road surface.Research for pitch fatigue behaviour is always road
The hot spot and difficulties in engineering material field, and it is tired currently based on asphalt material obtained from indoor continuous loading fatigue test
Often there are biggish gap in labor service life and the bituminous pavement practical fatigue life of outdoor observation, to find out its cause, outdoor asphalt road
Effective self-healing that the practical military service process of plane materiel material occurs is one of its principal element.Therefore, oneself of understanding and quantization asphalt material
More characteristic durability Design antifatigue for bituminous pavement is particularly important.
Summary of the invention
The purpose of the present invention is being based on " damage-interval principle of equal effects ", strip when for different level of damage and intermittent phase
Self-healing percentage (the %H measured under partS) test data, the self-healing principal curve of characterization pitch self-healing feature is established, and further
Self-healing rate (H is calculated by self-healing principal curveR) index is with the self-healing behavioral trait of quantitatively evaluating pitch.
Specific implementation process and analysis method of the invention is as follows.
(1) it is tested based on pitch self-healing, test obtains the pitch self-healing under the conditions of different level of damage and intermittent phase duration
Percentage (%HS) data.
(2) it is based on " damage-interval principle of equal effects ", is to move horizontally other with reference to faulted condition with 50% level of damage
The %H of level of damageSTest result, to form a continuous and smooth self-healing principal curve, then the self-healing principal curve discloses
The self-healing behavioral trait of road asphalt.
(3) it is further calculated by self-healing principal curve, obtains self-healing rate (HR) index is with the self-healing of quantitatively evaluating pitch
Behavioral trait.HRCharacterize %H in self-healing principal curveSThe slope in linear steady growth stage.
Pitch self-healing percentage (%HS) specific test is as follows: use dynamic shear rheometer to bitumen samples 20 first
At a temperature of DEG C, accelerated fatigue test is carried out to pitch according to linear amplitude scan test method, by test loading procedure
The self-healing intermittent phase is introduced to measure the variation of self-healing intermittent phase front and back damage variable S；In turn, it is damaged according to before and after the self-healing intermittent phase
Variable S's changes to define the self-healing percentage %H of pitchS, as shown by the following formula, wherein S1Become for the damage before the intermittent phase
Magnitude, S2For the damage variable value after the intermittent phase；
Further, self-healing intermittent phase duration is designed as 60s, 300s, 900s, 1800s.
Self-healing performance test, pitch self-healing percentage %H are carried out to different pitchesSNumerical value is higher, and self-healing ability is better；Benefit
With self-healing percentage %HSThe pitch for selecting performance preferably, so that the bituminous pavement after building up has better pavement performance.
Detailed description of the invention
Fig. 1 is the pitch self-healing percentage (%H under three kinds of faulted conditions of SBS modified pitchS) test result
Fig. 2 is the fit procedure of SBS modified pitch self-healing principal curve
Fig. 3 is self-healing principal curve comparison diagram under three kinds of ageing states of SBS modified pitch
Fig. 4 is the comparison diagram of self-healing rate under three kinds of ageing states of No. 70 matrix pitches and SBS modified pitch
Specific embodiment
In 302 dynamic shear rheometer (DSR) of Anton Paar MCR, using 8-mm parallel-plate, it is arranged between 2-mm
Gap carries out LAS test to bitumen samples at a temperature of a certain specific medium temperature, the scanning range of dynamic shearing strain amplitude from
0.1% linearly increases to 30%, and loading frequency 10Hz, the time is designed as 5 minutes；Then, collected by institute in test
Pitch fatigue failure point is calculated in shear stress (τ) and shear strain (γ) data, and then calculates level of damage and be respectively
The corresponding shear strain (γ) of 25% failure, 50% failure, 75% failure, 125% failure；Finally, testing process in LAS
In, self-healing intermittent phase 60s, 300s, 900s, 1800s can be introduced in the above level of damage respectively, observe pitch within the intermittent phase
Self-healing behavior.Selecting for self-healing intermittent phase duration is foundation according to the material self-healing feature of pitch, makes pitch self-healing percentage (%
HS) be uniformly distributed between 0% to 100%, by experience selection and verification experimental verification, determine 60s, 300s, 900s, 1800s
Intermittent phase as pitch self-healing test.
Specific implementation step is as follows:
Step 1: completing to test without self-healing LAS, damage feature curve is obtained；
Step 2: displacement sample carries out the test of the self-healing based on LAS, it is loaded onto shearing corresponding to selected level of damage and answers
Stop load when change, introduces the selected self-healing intermittent phase；
Step 3: strain value corresponding when stopping loading from second step continues to load, until material generation cohesive force is tired
Labor terminates when failing.
(2) after the completion of testing, based on the damage variable S before and after the self-healing intermittent phase1And S2Evaluation, pass through formula (1)
Self-healing percentage (%H is calculatedS), and in this, as the evaluation index of road asphalt damage self-healing performance.
Specific embodiment 1: carrying out self-healing examination using No. 70 matrix pitches and SBS modified pitch in present embodiment
It tests, obtains pitch self-healing percentage (%H of two kinds of pitches under 25%, 50%, 75% level of damage respectivelyS) result.It is based on
" damage-interval principle of equal effects " is to move horizontally the %H of different level of damage with reference to faulted condition with 50% level of damageSNumber
According to by the fitting coefficient in the nonlinear optimization solution self-healing principal curve in Microsoft Excel Solver to set up
Smooth and continuous self-healing principal curve.And then it further calculates to obtain the self-healing rate (H of the pitch based on self-healing principal curveR) refer to
Mark result.
Specific embodiment 2: present embodiment and specific embodiment one is not both to drip in used No. 70 matrix
Green and SBS modified pitch carries out short ageing processing according to specification AASHTO T240,
Specific embodiment 3: present embodiment and specific embodiment one is not both to drip in used No. 70 matrix
Green and SBS modified pitch carries out long-term ageing processing according to specification AASHTO 146R28.
Above embodiment calculated result obtained shows: pitch self-healing principal curve can react drip not of the same race well
Green self-healing behavioral difference, self-healing rate (HR) etc. evaluation indexes can quantify to distinguish the self-healing performance variation of pitch.
Using the method assay SBS modified pitch, self-healing performance difference, Fig. 3 are shown under three kinds of different ageing states
SBS pitch pitch self-healing principal curve under no aging (OB) state, short ageing (RTFO) and long-term ageing (PAV) state
Compare, it can be seen from this figure that showing highest pitch self-healing percentage (%H without the SBS pitch under ageing stateS) number
Value, with the intensification of degree of aging, %HSNumerical value is constantly reduced, and worst self-healing percentage number is shown under long-term ageing state
Value.Fig. 4 compared the self-healing rate (H of 70# matrix pitch, SBS modified pitch under three kinds of ageing statesR) value, show
Same result: with the intensification of degree of aging, pitch self-healing performance is reduced.By Fig. 4 it can be found that SBS modifier is to pitch
Self-healing performance is inhibited.Thus the scientific and effective of the evaluation method of the road asphalt material self-healing behavioral trait is demonstrated
Property.
Claims (4)
1. a kind of evaluation method of road asphalt self-healing behavioral trait, it is characterised in that: when to different level of damage and intermittent phase
Long pitch self-healing percentage %HSTest result is fitted, and establishes " the self-healing principal curve " for representing pitch self-healing behavioral trait
After establishing pitch self-healing principal curve, further calculate to obtain self-healing rate HRThe self-healing that index carrys out quantitatively evaluating road asphalt is special
Property, wherein HRCharacterize %H in pitch self-healing principal curveSThe slope in linear steady growth stage；
The self-healing percentage %H of pitchSSpecific test is as follows: using dynamic shear rheometer to bitumen samples in 20 DEG C of temperature first
Under degree, accelerated fatigue test is carried out to pitch according to linear amplitude scan test method, by introducing in test loading procedure
The self-healing intermittent phase measures the variation of damage variable S before and after the self-healing intermittent phase；In turn, according to damage variable before and after the self-healing intermittent phase
S's changes to define the self-healing percentage %H of pitchS, as shown by the following formula, wherein S1For the damage variable before the intermittent phase
Value, S2For the damage variable value after the intermittent phase；
2. a kind of evaluation method of road asphalt self-healing behavioral trait according to claim 1, it is characterised in that: be based on pitch
The self-healing rate H of self-healing principal curveREvaluation index carries out quantitative analysis, H to pitch self-healing featureRHigher, pitch self-healing performance is got over
It is good.
3. a kind of evaluation method of road asphalt self-healing behavioral trait according to claim 1, it is characterised in that: it is required that No. 70
Original sample matrix pitch self-healing rate is not lower than 0.15.
4. a kind of evaluation method of road asphalt self-healing behavioral trait according to claim 1, it is characterised in that: No. 70 original samples
Self-healing rate is not lower than 0.10 after matrix pitch long-term ageing 24 hours.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111551457A (en) * | 2020-05-18 | 2020-08-18 | 合肥工业大学 | Method for testing and evaluating asphalt healing performance |
| CN114878795A (en) * | 2022-05-31 | 2022-08-09 | 北京工业大学 | Method and device for evaluating self-healing capacity of asphalt damage based on energetics |
| CN116052809A (en) * | 2022-12-28 | 2023-05-02 | 北京工业大学 | Design method and device for bionic asphalt material |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102879272A (en) * | 2012-09-29 | 2013-01-16 | 长安大学 | Method for evaluating damage self-healing capacity of asphalt mortar |
| CN202814795U (en) * | 2012-09-29 | 2013-03-20 | 长安大学 | Detection device for self-healing of bituminous mortar |
| CN103487333A (en) * | 2013-10-11 | 2014-01-01 | 东南大学 | Asphalt mixture self-healing capability evaluating method |
| CN104713783A (en) * | 2015-04-09 | 2015-06-17 | 东南大学 | Method for detecting self-healing intensity of asphalt |
| CN104849154A (en) * | 2015-05-10 | 2015-08-19 | 北京工业大学 | Identification method for fatigue failure of pitch under dynamic shear load effect |
-
2018
- 2018-12-27 CN CN201811607455.4A patent/CN109541192A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102879272A (en) * | 2012-09-29 | 2013-01-16 | 长安大学 | Method for evaluating damage self-healing capacity of asphalt mortar |
| CN202814795U (en) * | 2012-09-29 | 2013-03-20 | 长安大学 | Detection device for self-healing of bituminous mortar |
| CN103487333A (en) * | 2013-10-11 | 2014-01-01 | 东南大学 | Asphalt mixture self-healing capability evaluating method |
| CN104713783A (en) * | 2015-04-09 | 2015-06-17 | 东南大学 | Method for detecting self-healing intensity of asphalt |
| CN104849154A (en) * | 2015-05-10 | 2015-08-19 | 北京工业大学 | Identification method for fatigue failure of pitch under dynamic shear load effect |
Non-Patent Citations (1)
| Title |
|---|
| CHAO WANG ET AL.: "Fatigue and healing performance assessment of asphalt binder from rheological and chemical characteristics", 《MATERIALS AND STRUCTURES》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111551457A (en) * | 2020-05-18 | 2020-08-18 | 合肥工业大学 | Method for testing and evaluating asphalt healing performance |
| CN111551457B (en) * | 2020-05-18 | 2023-02-28 | 合肥工业大学 | Method for testing and evaluating asphalt healing performance |
| CN114878795A (en) * | 2022-05-31 | 2022-08-09 | 北京工业大学 | Method and device for evaluating self-healing capacity of asphalt damage based on energetics |
| CN116052809A (en) * | 2022-12-28 | 2023-05-02 | 北京工业大学 | Design method and device for bionic asphalt material |
| CN116052809B (en) * | 2022-12-28 | 2023-10-10 | 北京工业大学 | Design method and device for bionic asphalt material |
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