CN109406551A - A kind of analysis method for testing asphalt internal structure feature - Google Patents
A kind of analysis method for testing asphalt internal structure feature Download PDFInfo
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- CN109406551A CN109406551A CN201811511741.0A CN201811511741A CN109406551A CN 109406551 A CN109406551 A CN 109406551A CN 201811511741 A CN201811511741 A CN 201811511741A CN 109406551 A CN109406551 A CN 109406551A
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- internal structure
- marshal piece
- structure feature
- analysis method
- liquor kalii
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
- G01N23/046—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material using tomography, e.g. computed tomography [CT]
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/03—Investigating materials by wave or particle radiation by transmission
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/10—Different kinds of radiation or particles
- G01N2223/101—Different kinds of radiation or particles electromagnetic radiation
- G01N2223/1016—X-ray
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- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Pulmonology (AREA)
- Radiology & Medical Imaging (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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- Pathology (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
Abstract
The invention discloses a kind of analysis methods for testing asphalt internal structure feature, comprising: initially sets up the quantitative analysis CT number database of marshal piece material；The angle for determining before the scan and test specimen being marked to scan, ensure to scan same test piece angle every time constant, then it is scanned according to flag sequence, obtain 3D high-precision CT scan image, marshal piece is successively immersed in the liquor kalii iodide that vacuum is satisfied in water instrument, and full water is completed by vacuum water instrument of satisfying, by the marshal piece after full water immediately plastic packaging in the polybag equipped with liquor kalii iodide, it is scanned immediately by CT scanner, obtains 3D high-precision CT scan image.The present invention accurately to detect the internal structure and defective eigenpairs of asphalt by high-accuracy CT scanner, and the visual result that will test using the brightener characteristic of liquor kalii iodide show, solve the problems, such as in the prior art detection asphalt structure it is inaccurately non-intuitive.
Description
Technical field
The present invention relates to asphalt internal structure test and analysis technology field, more particularly to a kind of tests
The analysis method of asphalt internal structure feature.
Background technique
Asphalt is by gathering materials, asphalt mastic and gap etc. form, mechanical behavior by three-phase component material volume
Content and spatial distribution codetermine.Its void is to the rutting resistance of bituminous pavement, water penetration, fatigue life, intensity etc.
Each performance has particularly important influence.Therefore the structure of Research on Asphalt Mixture is used and is pacified for the road of Accurate Prediction road
Full performance is very crucial.
Existing asphalt internal structure research method is mainly by the way that bitumen mixture specimen section to be divided into
Four equal areas zonules calculate its uniform performance of the parameter evaluations such as quantity, centroid position and area ratio of gathering materials in each region.
When due to dividing region, the integrality of small part coarse aggregate is inevitably destroyed, so when centroid position is gathered materials in calculating
Error can be generated.In addition, only considering influence of the coarse aggregate to Homogeneity of Asphalt Mixture, the effect in mortar and gap is had ignored,
And this method is inaccurate for the research of structure.
It is therefore proposed that it is a kind of can accurately detect asphalt internal structure and can accurately will test result presentation come out
Analysis method the problem of being those skilled in the art's urgent need to resolve.
Summary of the invention
In view of this, the present invention provides a kind of analysis methods for testing asphalt internal structure feature, by height
Accurate CT scanner accurately to detect the internal structure and defective eigenpairs of asphalt, and utilizes the blast of liquor kalii iodide
Agent characteristic shows that it is inaccurate to solve detection asphalt structure in the prior art the visual result that will test
Non-intuitive problem.
To achieve the goals above, the present invention adopts the following technical scheme:
A kind of analysis method for testing asphalt internal structure feature characterized by comprising
Step 1: the quantitative analysis CT number database of a variety of marshal piece test materials is established；
Step 2: the marshal piece is grouped and each marshal piece is marked, to described
Marshal piece is scanned sequentially through CT scanner, is ensured every time according to label to the scan angle of the marshal piece
It spends identical, obtains 3D high-precision CT scan image；
Step 3: the marshal piece is successively completely immersed in the liquor kalii iodide that vacuum is satisfied in water instrument, and passed through
Vacuum water instrument of satisfying completes full water, by the marshal piece after full water immediately plastic packaging in the polybag that liquor kalii iodide is housed
In, it is scanned immediately by CT scanner, obtains 3D high-precision CT scan image.
Preferably, marshal piece test material described in step 1 include: bitumen base, SBS pitch, gather materials, air,
Basalt fibre, hole, asphalt mastic and liquor kalii iodide.
It should be noted that marshal piece test material includes all pure metals for constituting marshal piece.
Preferably, labeling method in step 2 specifically:
It is marked according to the setting of the vertical and horizontal axis of ray scanning by the T font in the center of circle on the surface of the marshal piece.
Preferably, step 2 also specifically includes:
Section, and the depth by the section away from top side location are chosen on the 3D high-precision CT scan image obtained after scanning
Degree is recorded.
Preferably, pass through the specific steps of the full water instrument of vacuum in step 3 are as follows:
Start the full water instrument of the vacuum first, so that vacuum degree is reached 97.3kpa, continue 15min ± 2min, then carry out again
Vibration is until marshal piece surface bubble-free occurs.
Preferably, step 3 also specifically includes:
Section is chosen on the 3D high-precision CT scan image scanned after full water, the section of selection is away from top side location
Depth is consistent with the depth for choosing section in step 2.
Preferably, iodide ion concentration is not less than 10% in the liquor kalii iodide in the step 3.
Preferably, polybag is packed into 10ml liquor kalii iodide in advance.
Preferably, the sequence and angle scanned in step 2 and step 3 remains unchanged.
It can be seen via above technical scheme that compared with prior art, it is mixed that the present disclosure provides a kind of test pitches
The analysis method of material internal structure feature is closed, the present invention is scanned marshal piece by high-precision CT scanner, obtains
To CT number, and the situation of change using CT number come the gap of quantitative analysis asphalt and gap in test, accuracy rate are high
Effect is good, and the application also utilizes the characteristic of the brightener of liquor kalii iodide, and marshal piece progress liquor kalii iodide is satisfied
Water, the non-closed hole in test specimen are filled by liquor kalii iodide, can be by observing on the 3DCT image that obtains after scanning
Lighted portion be tested marshal piece non-closed hole, can more be visually observed that inside marshal piece
Structure solves the problems, such as asphalt internal-structure detection method inaccuracy existing in the prior art and non-intuitive.
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
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 attached drawing is the CT image obtained after the marshal piece provided by the invention for not immersing liquor kalii iodide scans；
Fig. 2 attached drawing sweeps CT image for what is obtained after the marshal piece scanning provided by the invention for immersing liquor kalii iodide.
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, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The embodiment of the invention discloses a kind of analysis methods for testing asphalt internal structure feature, comprising:
Step 1: the quantitative analysis CT number database of a variety of marshal piece test materials is established；
Further, the marshal piece test material in step 1 includes: bitumen base, SBS pitch, gathers materials, is empty
All pure metals of the composition marshal piece such as gas, basalt fibre, hole, asphalt mastic, liquor kalii iodide.
It should be understood that marshal piece test material is scanned respectively, after obtaining 3DCT scan image, Ke Yitong
The CT number of any one point in efilm software measurement 3D scan image is crossed to obtain complete CT number database, by appointing
The CT number of meaning position compares CT number database to determine that asphalt internal structure is constituted.
Due to the inhomogeneities for the material that asphalt is constituted, CT number is in certain section.The wherein variation zone of rubber cement
Domain is bigger, because rubber cement belongs to the mixture of pitch and fine aggregate, among asphalt, X-ray exists the CT number of hole
There is decaying when across mixture, pore size difference CT number is also different, but is all negative value.Since potassium iodide is liquid and stringent
Proportion is made, so CT number is stablized in the same numerical value.Measured CT number is as shown in table 1 below:
Table 1
| Material | Bitumen base | SBS pitch | Gather materials | Air |
| CT number | 0—20 | -20—0 | 2500—3000 | -1000 |
| Material | Basalt fibre | Hole | Asphalt mastic (fine aggregate) | Liquor kalii iodide |
| CT number | 250-350 | -200—-1000 | 1000—2500 | 3071 |
Step 2: marshal piece is grouped and each marshal piece is marked, and is pressed to marshal piece
Sequence is scanned by CT scanner, is ensured every time identical to the scanning angle of marshal piece according to label, is obtained 3D high
Precision CT scan image；
Further, labeling method in step 2 specifically:
It is marked according to the setting of the vertical and horizontal axis of ray scanning by the T font in the center of circle in the topical oil paint of marshal piece.
Further, step 2 also specifically includes:
Section will be chosen after marshal piece all scanning, and section is got off away from the depth registration of top side location, and right
The section of different depth is scanned.
It should be understood that choosing the section more than several gaps after test specimen is all scanned, and by section away from top surface position
The depth registration set gets off, and scans the same section for all comparing label each time later.A hole is taken in upper, middle and lower layer choosing respectively
The more section of gap, first layer are chosen according to more one layer of the inner pore of surface and centimetre, and middle layer and lower layer are also to select respectively
Take the layer that hole is more.
It is as shown in Figure 1 by the obtained 3DCT image of step 2.
Step 3: marshal piece is successively completely immersed in the liquor kalii iodide that vacuum is satisfied in water instrument, and passes through vacuum
Full water instrument completes full water, and by the marshal piece after full water, plastic packaging leads to immediately in the polybag equipped with liquor kalii iodide immediately
It crosses CT scanner to be scanned, obtains 3D high-precision CT scan image.
Further, pass through the specific steps of the full water instrument of vacuum in step 3 are as follows:
The full water instrument of starting vacuum first, makes vacuum degree reach 97.3kpa, continues 15min, then carries out vibration again until horse
Until Xie Er surface of test piece bubble-free occurs.
Further, the liquor kalii iodide in step 3 is matched by 500g potassium iodide and 1000ml water.
It is as shown in Figure 2 by the obtained 3DCT image of step 3.
Further, the sequence and angle scanned in step 2 and step 3 remains unchanged.
The operation principle of the present invention is that:
It is had a rest by the horse that liquor kalii iodide is not immersed in the scanning of step 2 and step 3 and immerses liquor kalii iodide
Your test specimen CT number, analyzes each test specimen by data in contrast table 1, obtains the inside composition of each test specimen, according to sweeping
From the point of view of 3DCT image conditions after retouching, it is bright that white is presented in open pores immersion liquor kalii iodide part on 3DCT image frame
Point, CT digital display show 3071, and comparison diagram 1 and Fig. 2 can be observed black portions and become brilliant white color part, then illustrates the hole being lit
Gap belongs to non-closed hole.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.For device disclosed in embodiment
For, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is said referring to method part
It is bright.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (9)
1. a kind of analysis method for testing asphalt internal structure feature characterized by comprising
Step 1: the quantitative analysis CT number database of a variety of marshal piece test materials is established；
Step 2: the marshal piece is grouped and each marshal piece is marked, and is had a rest to the horse
You are scanned test specimen sequentially through CT scanner, ensure the scanning angle phase to the marshal piece every time according to label
Together, 3D high-precision CT scan image is obtained；
Step 3: the marshal piece is successively completely immersed in the liquor kalii iodide that vacuum is satisfied in water instrument, and passes through vacuum
Full water instrument completes full water, and by the marshal piece after full water, plastic packaging is stood in the polybag equipped with liquor kalii iodide immediately
It is scanned by CT scanner, obtains 3D high-precision CT scan image.
2. a kind of analysis method for testing asphalt internal structure feature according to claim 1, which is characterized in that
Marshal piece test material described in step 1 includes: bitumen base, SBS pitch, gathers materials, air, basalt fibre, hole
Gap, asphalt mastic and liquor kalii iodide.
3. a kind of analysis method for testing asphalt internal structure feature according to claim 1, which is characterized in that
Labeling method in step 2 specifically:
It is marked according to the setting of the vertical and horizontal axis of ray scanning by the T font in the center of circle on the surface of the marshal piece.
4. a kind of analysis method for testing asphalt internal structure feature according to claim 1, which is characterized in that
Step 2 also specifically includes:
Section is chosen on the 3D high-precision CT scan image obtained after scanning, and the depth note by the section away from top side location
Record is got off.
5. a kind of analysis method for testing asphalt internal structure feature according to claim 1, which is characterized in that
Pass through the specific steps of the full water instrument of vacuum in step 3 are as follows:
Start the full water instrument of the vacuum first, so that vacuum degree is reached 97.3kpa, continue 15min ± 2min, then vibrated again
Until marshal piece surface bubble-free occurs.
6. a kind of analysis method for testing asphalt internal structure feature according to claim 4, which is characterized in that
Step 3 also specifically includes:
Section is chosen on the 3D high-precision CT scan image scanned after full water, the section of selection is away from the depth of top side location
It is consistent with the depth for choosing section in step 2.
7. a kind of analysis method for testing asphalt internal structure feature according to claim 1, which is characterized in that
Iodide ion concentration is not less than 10% in the liquor kalii iodide in step 3.
8. a kind of analysis method for testing asphalt internal structure feature according to claim 1, which is characterized in that
Polybag is packed into 10ml liquor kalii iodide in advance.
9. a kind of analysis side of test asphalt internal structure feature described in any one of -8 according to claim 1
Method, which is characterized in that the sequence and angle scanned in step 2 and step 3 remains unchanged.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811511741.0A CN109406551B (en) | 2018-12-11 | 2018-12-11 | Analysis method for testing internal structure characteristics of asphalt mixture |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811511741.0A CN109406551B (en) | 2018-12-11 | 2018-12-11 | Analysis method for testing internal structure characteristics of asphalt mixture |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108760776A (en) * | 2018-03-23 | 2018-11-06 | 深圳大学 | The visual testing method and system of Water Transport in cement-based material |
| CN114034725A (en) * | 2021-12-13 | 2022-02-11 | 中国石油大学(华东) | Method for observing generation process of tetrahydrofuran hydrate |
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Cited By (3)
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