CN110297079A - A kind of asphalt material self-healing device for evaluating performance and method - Google Patents
A kind of asphalt material self-healing device for evaluating performance and method Download PDFInfo
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- CN110297079A CN110297079A CN201910732759.1A CN201910732759A CN110297079A CN 110297079 A CN110297079 A CN 110297079A CN 201910732759 A CN201910732759 A CN 201910732759A CN 110297079 A CN110297079 A CN 110297079A
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Abstract
The present invention is based on capillary diffusion theories to propose a kind of asphalt material self-healing device for evaluating performance and method, and the device and method to solve existing evaluation asphalt material self-healing capability is all more complicated, and spends higher, and test period is long.Evaluating apparatus includes environmental cabinet, wetting mechanism for testing and diffusion mechanism for testing are equipped in environmental cabinet, soaking mechanism for testing includes culture dish, the bracket for placing pitch test block is equipped in culture dish, the side of bracket is fixed with the glass tube for holding test pitch, the side of glass tube is equipped with the fluting that size is greater than pitch test block side, and fluting is equipped with baffle, and the top of baffle is equipped with handle；Spreading mechanism for testing includes two ends that are relatively fixed, and two fixing ends pass through the two sides that telescopic rod is fixed on environmental cabinet respectively.The configuration of the present invention is simple, at low cost, length when test, test result is more accurate, can be used to evaluate the self-healing behavior of asphalt material, the various real materials being adapted in road engineering well.
Description
Technical field
The present invention relates to the technical field of asphalt material more particularly to a kind of asphalt material self-healing device for evaluating performance and
Method is tested mainly for pitch or asphalt mastic and asphalt mortar, bituminous mortar.
Background technique
In recent years, the highway layout in China is most of all selects bituminous pavement, swift and violent with China's rate of economic development
Increase, the use of asphalt material is increased year by year, pitch has become material indispensable in road engineering.Nowadays China evaluates
The pavement performance of asphalt material does not take into account its self-healing performance, has biggish surplus when designing road, causes
Certain waste.The method of existing evaluation asphalt material self-healing capability is complex, does not there is unified standard and method,
And cost is higher, and required test period is longer, is not suitable in actual highway layout.
Summary of the invention
It is all more complicated for the device and method of existing evaluation asphalt material self-healing capability, and spend higher, test
Time long technical problem, the present invention propose a kind of asphalt material self-healing device for evaluating performance and method, utilize capillary
The self-healing performance of diffusion theory measurement asphalt material is flowed, structure is simple, at low cost, and length when test is suitable for practical road
In the performance evaluation of road.
In order to achieve the above object, the technical scheme of the present invention is realized as follows:
A kind of asphalt material self-healing device for evaluating performance, including environmental cabinet, the environmental cabinet is interior to be equipped with wetting test machine
Structure and diffusion mechanism for testing, wetting mechanism for testing include culture dish, and the bracket for placing pitch test block, branch are equipped in culture dish
The side of frame is fixed with the glass tube for holding test pitch, and the side of glass tube is equipped with size and is greater than pitch test block side
Fluting, fluting are equipped with baffle, and the top of baffle is equipped with handle；The diffusion mechanism for testing includes two ends that are relatively fixed,
Two fixing ends pass through the two sides that telescopic rod is fixed on environmental cabinet respectively.
The baffle is fixed on locating clip, and positioning jacket is located on glass tube；The baffle is equipped with sealing ring, sealing
Circle is matched with fluting.
The middle part of the bracket is equipped with gravity sensor, is equipped with tension sensor, gravity sensor and pulling force in telescopic rod
Sensor is connected with controller, and controller is connected with display.
The telescopic rod is electric telescopic rod, and electric telescopic rod is connected with controller；The bottom of the environmental cabinet is equipped with
It is equipped with solenoid valve on water inlet pipe and outlet pipe, water inlet pipe and outlet pipe, is equipped with temperature sensor, temperature sensor in environmental cabinet
It is connected with environmental cabinet control device with solenoid valve.
The bottom of the fluting and the top flush of bracket.
The fixing end is equipped with adjuster.
A kind of asphalt material self-healing method of evaluating performance, its step are as follows:
Step 1: cleaning culture dish and bracket adjust environment the temperature inside the box and are maintained at test temperature, the culture dish after drying
It is placed in environmental cabinet and is preheated with bracket；
Step 2: production pitch test block；
Step 3: the tall and big test pitch in pitch test block height is injected in a glass tube, 1h is kept the temperature in environmental cabinet；
Step 4: actionradius is that the capillary needle of r makes left and right perforation at the center for the pitch test block that step 2 makes
Capillary channel, put back on the bracket in environmental cabinet, be further continued for heat preservation half an hour；
Step 5: being lifted the baffle on glass tube by handle, by the fluting of pitch test block push-in glass tube, makes to drip
Green test block is entirely immersed in pitch, records the weight m of pitch test block at this time1, drip is read after standing required healing time t
The weight m of green test block2；Calculate the volume V of drilled out capillary channel in pitch test blockb；Calculate mΔ=m2-m1, measure test pitch
Density p, calculate healing volume of the pitch test block in healing timeWithTo indicate test pitch
Soak healing ability；
Step 6: the same type pitch test block that two are tested is put into environmental cabinet and keeps the temperature 2h, by pitch
Test block is respectively put into two and is relatively fixed in end, makes fixing end jam-packed pitch test block by adjusting adjuster, shakes gently really
It protects pitch test block not falling out, keeps the temperature 30min；
Step 7: operation telescopic rod is stretched out to the center of environmental cabinet, and two pitch test blocks is made to contact with each other, and observes display
The size of the power of upper display applies the pressure of 5N to two pitch test blocks, keeps this state to the healing time of setting；
Step 8: two side stretchings of the telescopic rod to environmental cabinet are operated by controller, step is applied since 0 by telescopic rod
Add pulling force until two pitch test blocks are fully withdrawn, records drawing shown on display when two pitch test blocks are kept completely separate
Force value Fp, to characterize healing ability of pitch test block during molecule diffusive healing；
Step 9: according to formulaThe self-healing of this material entirety is calculated
Ability, thFor the equivalent healing time of asphalt material,Characterize healing of asphalt material during molecule diffusive healing
Ability,Characterize the wetting self-healing capability of asphalt material.
The pitch on trichloro ethylene or gasoline cleaning culture dish and bracket is utilized in the step 1；In the step 3
Test pitch is sufficiently stirred.
Pitch test block includes test block made of test block made of pitch or asphalt mastic and asphalt mortar, bituminous mortar in the step 2.
The pitch or asphalt mastic heat two hours in the baking oven for being set as 60 DEG C, are subsequently poured into and coat release agent
In die trial, die trial is having a size of 100 × 100 × 100mm, and cooling demoulds afterwards for 24 hours under room temperature；The asphalt mortar, bituminous mortar is rotated in SGC presses
Room temperature for 24 hours, the test block of 100 × 100 × 100mm is machined as using cutting, test block after molding is being dried after real instrument molding
It is kept the temperature in case；The pitch or asphalt mastic are sufficiently stirred in die trial.
Beneficial effects of the present invention: the self-healing performance of simulation asphalt material that can be relatively simple, foundation meet wetting-
Molecule spreads self-healing model, and the relatively simple convenience of operating method, does not need largely to be tried using complicated DSR instrument
It tests, it is possible to reduce test period, testing equipment are also relatively easy to obtain, and have higher superiority in economic aspect.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of wetting mechanism for testing of the invention.
Fig. 2 is the structural schematic diagram of diffusion mechanism for testing of the invention.
Fig. 3 is the flow chart of evaluation method of the present invention.
In figure, 1 is environmental cabinet, and 2 be culture dish, and 3 be bracket, and 4 be water inlet pipe, and 5 be outlet pipe, and 6 be card slot, and 7 be gravity
Sensor, 8 be baffle, and 9 be glass tube, and 10 be handle, and 11 be adjuster, and 12 be fixing end, and 13 be telescopic rod, and 15 pass for pulling force
Sensor.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under that premise of not paying creative labor
Embodiment shall fall within the protection scope of the present invention.
The present invention is designed based on capillary flow diffusion theory, and the pitch of pitch or polymer modification is heated to
Its glass transition temperature, it will liquefy, and can slowly flow for a long time.When encountering the propagation crack including contact point and space
When, this road oil is by capillary power drive, into fracture surface.Into after fracture surface, this road oil just becomes healing
Agent under the driving of pressure or concentration gradient, can be diffused into fracture matrix, and after it soaks crack area in surface energy
It is combined with each other under the action of difference or thermodynamic driving force with substrate molecule.Finally, the recovery of the boundary strength with the plane of disruption, splits
Seam disappears.
Road oil can be entered in crack and soak the crack boundary of asphalt material by capillary drive, can obtain
Healing strength must be soaked, therefore soaks healing index and may be expressed as:
H1=α t0.5
Wherein, H1It is wetting index relevant to environment temperature T and wetting time t.α is a kind of and bituminous cement property
Matter and the related constant of environment temperature.
After wetting stage short time, asphalt material enters the molecule diffusive healing stage, break surface it is long-term strong
Degree gain depends on the diffusion and randomization of asphaltene molecule.Due to the entanglement of strand and the diffusion of molecule, gradually form
Diffusive healing intensity.Use H2The asphalt material enhanced strength value for indicating molecule diffusion phase, may be expressed as:
H2=β t0.5
Wherein, β is temperature related parametric, it indicate due to molecule at a temperature of fracture faces between phase counterdiffusion cause
Intensity gain rate.
The fully integrated self-healing of bituminous cement includes spreading rush by the wetting healing of capillary power drive and by molecule
Into diffusive healing, therefore agglutination can be divided into two Main Stages, including wetting and molecule diffusion.Assuming that when entire healing
Between and wetting time be respectively t and λ.Therefore, molecule diffusion time is (t- λ), can obtain two stages self-healing model are as follows:
Wherein, H1Wetting healing index and macroscopic view healing index are respectively indicated with H.Once pitch crack occurs, soaked
Journey is begun to, and is ramped up molecular diffusion rates then to keep diffusion to balance, finally is occurred to tangle to obtain boundary on crack
Surface intensity.
Embodiment 1: as depicted in figs. 1 and 2, a kind of asphalt material self-healing device for evaluating performance, including environmental cabinet 1, ring
Border case 1 is used to provide stable experimental enviroment to the pitch of test and pitch test block.1 top of environmental cabinet passes through upper cover and cabinet
It is tightly connected, guarantees that environment the temperature inside the box keeps set temperature, too wide fluctuations do not occur because being influenced by the external world.It is described
Wetting mechanism for testing and diffusion mechanism for testing are equipped in environmental cabinet 1, wetting mechanism for testing is used to carry out the energy of wetting of pitch test block
The test of power, diffusion mechanism for testing is for measuring pitch test block molecule diffusivity.Soaking mechanism for testing includes culture dish 2, training
The bracket 3 being equipped in ware 2 for placing pitch test block is supported, bracket 3 is used to support pitch test block, and the side fixation of bracket 3 is useful
In the glass tube 9 for holding test pitch, glass tube 9 is made of the glassware for facilitating processing, and the side of glass tube 9 is equipped with size
Greater than the fluting 6 of pitch test block side, facilitate and pitch test block is pushed into glass tube 9, fluting 6 is equipped with baffle 8, baffle 8
It is flowed out from fluting 6 for forming test pitch, baffle 8 can be slided up and down relative to fluting 6, and the top of baffle 8 is equipped with handle
10, facilitate operation baffle 8 to move up and down, to control whether experiment pitch flows out.The diffusion mechanism for testing includes two phases
Pair fixing end 12, for fixing end 12 for firmly grasping pitch test block respectively, fixing end 12, which is oppositely arranged, facilitates two pitch test blocks real
Be in contact when testing, two fixing ends 12 are fixed on the two sides of environmental cabinet 1 by telescopic rod 13 respectively, by the stretching of telescopic rod or
It shrinks two pitch test blocks of driving to contact with each other or separate, thus pressure or pulling force between two pitch test blocks of measurement.It is fixed
End 12 and culture dish 2 are located at the two sides of environmental cabinet 1, and fixing end 12 and culture dish 2 do not influence to use mutually.
Further, the baffle 8 is fixed on locating clip, and positioning jacket is located on glass tube 9, is positioned by active force
Folder can move on glass tube 9, and when not applying active force, the end of baffle is fixed on glass tube by locating clip；Locating clip
Use any one quick-speed jigs.The baffle 8 is equipped with sealing ring, and sealing ring 6 is matched with fluting, when baffle 8 and
When fluting 6 matches, the test pitch in glass tube 9 does not flow out glass tube.
Further, the middle part of the bracket 3 is equipped with gravity sensor 7, and gravity sensor 7 is for measuring pitch test block
Weight.Tension sensor 15 is equipped in telescopic rod 13, tension sensor 15 is used to measure pulling force and pressure suffered on telescopic rod,
What is detected according to the identical principle tension sensor 15 of telescopic rod left and right ends pulling force is effect between two pitch test blocks
Power, gravity sensor 7 and tension sensor 15 are connected by signal conversion circuit with controller, controller and display phase
Connection.The model BSHS1 or similar of gravity sensor 7, the model BSLS1 or similar of tension sensor 15, controller are
PLC controller, the model V4896 or similar of display.The pitch examination for facilitating observation gravity sensor 7 to measure by display
Suffered pulling force and pressure on the telescopic rod 13 of weight change and the tension sensor measurement of block.
Further, the telescopic rod 13 is electric telescopic rod, and electric telescopic rod is connected with controller；Electric telescopic rod
Apply pulling force or pressure to opposite pitch test block for adjusting the distance of two fixing ends 12, and by telescopic rod 13, it is electronic
The model TJC-C1-T3-P-P or similar of telescopic rod.Telescopic rod 13 is controlled by the controller outside environmental cabinet 1, can be with
Pressure or pulling force are applied to pitch test block by fixing end 12.The bottom of the environmental cabinet 1 is equipped with water inlet pipe 4 and outlet pipe 5, into
It is equipped with solenoid valve on water pipe 4 and outlet pipe 5, is equipped with temperature sensor in environmental cabinet 1, temperature sensor and solenoid valve are and ring
Border case control device is connected.The model ABSD-01A of the temperature sensor and model ZXB2218-02 of solenoid valve, temperature
Sensor is used to measure the temperature in environmental cabinet 1, and solenoid valve can control the flowing of water in environmental cabinet 1, to adjust environmental cabinet 1
Interior test temperature, the liquid level in environmental cabinet 1 are lower than culture dish 2, guarantee that the water in environmental cabinet 1 will not immerse culture dish 2,
Test pitch and pitch test block are impacted.
Further, the top flush of the bottom of the fluting 6 and bracket 3, facilitates the pitch test block branch on bracket 3
In frame push-in fluting, contacted with the test pitch in glass tube 9.The size of fluting 6 is the opening slightly larger than 100mm, is opened
The least significant end of slot 6 is greater than the height of bracket 3, guarantees that asphalt blocks can be caught in fluting just, immerses pitch, and pitch will not
Outflow.
Further, the fixing end 12 is equipped with adjuster 11, and fixing end 12 can be used adjuster 11 and adjust up and down
Width can guarantee pitch test block being caught in fixing end 12 just after 11 adjustment width of adjuster, will not fall off, can be compared with
Good applies pressure or pulling force to pitch test block.Adjuster 11 is screw, and fixing end is that the side processed is equipped with spiral shell up and down
The adjustable cuboid thickness iron plate moved up and down of silk, thick iron sheet are adjusted by a small-sized telescopic rod, are connected directly between spiral shell
On silk, the elastic of iron plate is adjusted by screw, pitch test block is clamped.
Embodiment 2, as shown in figure 3, a kind of asphalt material self-healing method of evaluating performance, its step are as follows:
Step 1: cleaning culture dish 2 and bracket 3 adjust temperature in environmental cabinet 1 and are maintained at test temperature, the training after drying
It supports ware 2 and bracket 3 is placed in environmental cabinet 1 and is preheated.
Pitch used by this example is 70# pitch, and three norms are as shown in table 1.
1 asphalt material basic index of table
The pitch on trichloro ethylene or gasoline cleaning culture dish 2 and bracket 3 is utilized in the step 1；Clean up postposition
It in baking oven, is dried at 105 DEG C ± 0.5 DEG C, is placed on after drying in environmental cabinet 1 and is preheated at 25 DEG C.Adjust ring
Liquid level and temperature in border case 1 make its temperature be maintained at 25 DEG C, and liquid level is lower than the height of culture dish 2, and guarantees the level of culture dish
Stablize.
Step 2: production pitch test block.
Pitch test block includes test block made of test block made of pitch or asphalt mastic and asphalt mortar, bituminous mortar in the step 2.
The pitch or asphalt mastic heat two hours in the baking oven for being set as 60 DEG C, are subsequently poured into the die trial for coating release agent,
Die trial is having a size of 100 × 100 × 100mm, and cooling demoulds afterwards for 24 hours under room temperature；The asphalt mortar, bituminous mortar is formed in SGC rotary compactor
Room temperature for 24 hours, the test block of 100 × 100 × 100mm is machined as using cutting afterwards, and test block after molding carries out in baking oven
Heat preservation；The pitch or asphalt mastic are sufficiently stirred in die trial.
70# pitch is heated two hours in the baking oven for being set as 60 DEG C, is subsequently poured into the die trial for coating release agent, die trial
It having a size of 100 × 100 × 100mm, is sufficiently stirred in die trial, eliminates bubble, guarantee all pitch test block quality and body
Product be it is identical, under room temperature cooling demould afterwards for 24 hours, pitch test block is placed in 25 DEG C of baking ovens after molding and is kept the temperature.
Step 3: the tall and big test pitch in pitch test block height is injected in glass tube 9, keeps the temperature 1h in environmental cabinet 1.
Test pitch in the step 3 is sufficiently stirred.Test pitch is sufficiently stirred at 60 DEG C, is disappeared
Bubble removing allows pitch that there is mobility to pour into glass tube.The test pitch that high 110mm is injected in glass tube 9, is put into ring
In border case 1,1h is kept the temperature.
Step 4: actionradius is that the capillary needle of r makes left and right perforation at the center for the pitch test block that step 2 makes
Capillary channel, put back on the bracket 3 in environmental cabinet 1, be further continued for heat preservation half an hour.
Three pitch test blocks that step 2 makes are taken out out of baking oven, using r=0.1mm capillary needle in pitch test block
The capillary channel of left and right perforation is made at center, keeps the temperature half an hour on the bracket 3 placed into culture dish 2, guarantee test temperature.
Step 5: being lifted the baffle 8 on glass tube 9 by handle 10, by the fluting 6 of pitch test block push-in glass tube 9
It is interior, it is immersed in pitch test block in test pitch, records the weight m of pitch test block at this time1.Glass tube 9 is immersed into test block part
It is interior, guarantee that pitch test block has part to be immersed in asphalt material to realize capillarity, pitch test block is located on gravity sensor
Side, can directly measure the quality of asphalt blocks.The weight m of pitch test block is read after healing time t required for standing2；It calculates
The volume V of drilled out capillary channel in pitch test blockb；Calculate mΔ=m2-m1, the density p of test pitch is measured, pitch is calculated
Healing volume of the test block in healing timeWithTo indicate the wetting healing ability of test pitch.
Pitch test block is only pushed into glass tube a part of, 9 width 10mm of glass tube, and baffle is displaced downwardly to and is opened after push-in
Slot 6 is completely corresponding, realizes sealing.Pitch test block is pushed by slotting, 60 DEG C of pitch of guarantee will not flow out when pouring into.
Three pitch test blocks are successively tested respectively, are tested three times in total, the weight m of test block is weighed1Respectively
For 1209.832g, 1210.053g, 1210.151g, stands after intermittent time t is 40min and record weight m2Respectively
1210.834g,1210.056g,1210.152g.Calculate the volume V of drilled out pore in test blockbFor π r2H, r are capillary needle
Radius, h are height, are fixed as 100mm；Calculate m of poor qualityΔ=m2-m1Respectively 0.002g, 0.003g, 0.001g take three
Average value 0.002g, gravity sensor measure glass tube in test pitch weight, calculate its volume to measure test drip
Green density p is 1.21g/cm3, pitch test block in 40min healing height beFor 1.653mm3, directly calculate
VbFor 3.142mm3, useTo indicate the wetting ability of pitch test block.
Step 6: the same type pitch test block that two are tested is put into environmental cabinet 1 and keeps the temperature 2h, by pitch
Test block is respectively put into two and is relatively fixed in end 12, makes 12 jam-packed pitch test block of fixing end by adjusting adjuster 14, gently
Shaking ensures that pitch test block is not fallen out, and keeps the temperature 30min.
Six molding test block taking-ups of 70# pitch institute are put into environmental cabinet 1 from baking oven, adjust the test temperature of environmental cabinet
Degree is 25 DEG C, keeps the temperature 2h, adjusts the height of fixing end 12, two test blocks are respectively put into fixing end, by adjusting adjuster 14
Make fixing end jam-packed pitch test block, shaking gently ensures that pitch test block is not fallen out, because the temperature sensitive property of pitch is higher, in order to
Guarantee that pitch test block is in healing temperature, with the accuracy of this guarantee test result, this state is kept to keep the temperature 30min.
Step 7: operation telescopic rod 13 is stretched out to the center of environmental cabinet 1, and two pitch test blocks is made to contact with each other, and observation is aobvious
The size for showing the power shown on device applies the pressure of 5N to two pitch test blocks, keeps this state to the healing time of setting.
Telescopic rod 13 is operated, two test blocks is made to contact with each other, observes what the tension sensor 15 shown on display measured
The size of power, the size of power is 0 when two pitch test blocks contact with each other, and then applies the pressure of 5N, is kept for this state intermittent time
40min makes it carry out molecule diffusion motion between each other, sticks together, and enables its 40min that heals.
Step 8: by controller operate two side stretchings of the telescopic rod to environmental cabinet 1, by telescopic rod 13 since 0 platform
Rank applies pulling force until two pitch test blocks are pulled open, and records drawing shown on display when two pitch test blocks are kept completely separate
Force value Fp, to characterize healing ability of pitch test block during molecule diffusive healing.
After reaching 40min, start to stretch telescopic rod, since 0 ing, using 0.1N as step continue to increase the pulling force of application up to
Two pitch test blocks are kept completely separate, and are not bonded, value of thrust Fp shown on display when record pitch test block separates.Respectively
Three groups of tests are carried out, resulting value is respectively 2.14N, 2.15N, 2.58N, and taking the average value of three is 2.29N.
Step 9: according to formulaThe self-healing of this material entirety is calculated
Ability, thFor the equivalent healing time of asphalt material,Characterize healing of asphalt material during molecule diffusive healing
Ability,Characterize the wetting self-healing capability of asphalt material.
It can be calculated thIt is 4.63 × 104, fitting HI=At is tested according to conventional self-healing0.25+ B, 70# pitch of the same race
20% injury tolerance fitting gained formula is HI=0.097 × t0.25- 0.421, it is 4.60 × 10 that enable HI, which be 1 gained t value,4, the two compared with
Be close, it is believed that the present invention calculated healing time can preferably characterize the self-healing capability of asphalt material.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of asphalt material self-healing device for evaluating performance, including environmental cabinet (1), which is characterized in that in the environmental cabinet (1)
Equipped with wetting mechanism for testing and diffusion mechanism for testing, wetting mechanism for testing includes culture dish (2), is equipped with and is used in culture dish (2)
The bracket (3) of pitch test block is placed, the side of bracket (3) is fixed with the glass tube (9) for holding test pitch, glass tube
(9) side is equipped with the fluting (6) that size is greater than pitch test block side, and fluting (6) is equipped with baffle (8), the top of baffle (8)
Equipped with handle (10)；The diffusion mechanism for testing includes two and is relatively fixed end (12), and two fixing ends (12) pass through respectively
Telescopic rod (13) is fixed on the two sides of environmental cabinet (1).
2. asphalt material self-healing device for evaluating performance according to claim 1, which is characterized in that the baffle (8) is solid
It is scheduled on locating clip, positioning jacket is located on glass tube (9)；The baffle (8) is equipped with sealing ring, sealing ring and fluting (6)
It matches.
3. asphalt material self-healing device for evaluating performance according to claim 1, which is characterized in that the bracket (3)
Middle part is equipped with gravity sensor (7), and tension sensor (15), gravity sensor (7) and pull sensing are equipped in telescopic rod (13)
Device (15) is connected with controller, and controller is connected with display.
4. asphalt material self-healing device for evaluating performance described in any one of -3 according to claim 1, which is characterized in that institute
Stating telescopic rod (13) is electric telescopic rod, and electric telescopic rod is connected with controller；The bottom of the environmental cabinet (1) is equipped with water inlet
(4) and outlet pipe (5) are managed, solenoid valve is equipped on water inlet pipe (4) and outlet pipe (5), is equipped with temperature sensing in environmental cabinet (1)
Device, temperature sensor and solenoid valve are connected with environmental cabinet control device.
5. asphalt material self-healing device for evaluating performance according to claim 4, which is characterized in that the fluting (6)
The top flush of bottom and bracket (3).
6. asphalt material self-healing device for evaluating performance according to claim 1 or 5, which is characterized in that the fixing end
(12) adjuster (11) are equipped with.
7. a kind of asphalt material self-healing method of evaluating performance, which is characterized in that its step are as follows:
Step 1: cleaning culture dish (2) and bracket (3) adjust environmental cabinet (1) interior temperature and are maintained at test temperature, after drying
Culture dish (2) and bracket (3) are placed in environmental cabinet (1) and are preheated；
Step 2: production pitch test block；
Step 3: the tall and big test pitch in pitch test block height of injection in glass tube (9) keeps the temperature 1h in environmental cabinet (1)；
Step 4: actionradius is the hair that the capillary needle of r makes left and right perforation at the center for the pitch test block that step 2 makes
Thin channel is put back on the bracket (3) in environmental cabinet (1), and heat preservation half an hour is further continued for；
Step 5: being lifted the baffle (8) on glass tube (9) by handle (10), by opening for pitch test block push-in glass tube (9)
It in slot (6), is immersed in pitch test block entirely in pitch, records the weight m of pitch test block at this time1, healing required for standing
The weight m of pitch test block is read after time t2；Calculate the volume V of drilled out capillary channel in pitch test blockb；Calculate mΔ=m2-
m1, the density p of test pitch is measured, healing volume of the pitch test block in healing time is calculatedWithTable
Show the wetting healing ability of test pitch；
Step 6: the same type pitch test block that two are tested is put into environmental cabinet (1) and keeps the temperature 2h, pitch is tried
Block is respectively put into two and is relatively fixed in end (12), makes fixing end (12) jam-packed pitch test block by adjusting adjuster (14),
Shaking gently ensures that pitch test block is not fallen out, and keeps the temperature 30min；
Step 7: operation telescopic rod (13) is stretched out to the center of environmental cabinet (1), and two pitch test blocks is made to contact with each other, and observation is aobvious
The size for showing the power shown on device applies the pressure of 5N to two pitch test blocks, keeps this state to the healing time of setting；
Step 8: two side stretchings of the telescopic rod to environmental cabinet (1) are operated by controller, pass through telescopic rod (13) platform since 0
Rank applies pulling force until two pitch test blocks are fully withdrawn, and records shown on display when two pitch test blocks are kept completely separate
Value of thrust Fp, to characterize healing ability of pitch test block during molecule diffusive healing；
Step 9: according to formulaThe self-healing energy of this material entirety is calculated
Power, thFor the equivalent healing time of asphalt material,Characterize healing energy of asphalt material during molecule diffusive healing
Power,Characterize the wetting self-healing capability of asphalt material.
8. asphalt material self-healing method of evaluating performance according to claim 7, which is characterized in that sharp in the step 1
The pitch on culture dish (2) and bracket (3) is cleaned with trichloro ethylene or gasoline；Test pitch in the step 3 carries out abundant
Stirring.
9. asphalt material self-healing method of evaluating performance according to claim 7, which is characterized in that dripped in the step 2
Green test block includes test block made of test block made of pitch or asphalt mastic and asphalt mortar, bituminous mortar.
10. asphalt material self-healing method of evaluating performance according to claim 9, which is characterized in that the pitch or drip
Green rubber cement heats two hours in the baking oven for being set as 60 DEG C, is subsequently poured into the die trial for coating release agent, die trial is having a size of 100
× 100 × 100mm, cooling demoulds afterwards for 24 hours under room temperature；Asphalt mortar, bituminous mortar room temperature after the molding of SGC rotary compactor
For 24 hours, the test block of 100 × 100 × 100mm is machined as using cutting, test block after molding is kept the temperature in baking oven；The drip
Green or asphalt mastic is sufficiently stirred in die trial.
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