CN108519394A - Test method is continuously tracked in cement material freezing-thawing damage process visualization - Google Patents
Test method is continuously tracked in cement material freezing-thawing damage process visualization Download PDFInfo
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- CN108519394A CN108519394A CN201810200892.8A CN201810200892A CN108519394A CN 108519394 A CN108519394 A CN 108519394A CN 201810200892 A CN201810200892 A CN 201810200892A CN 108519394 A CN108519394 A CN 108519394A
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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
- 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
- G01N23/06—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 measuring the absorption
- G01N23/18—Investigating the presence of flaws defects or foreign matter
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Abstract
Test method is continuously tracked in a kind of cement material freezing-thawing damage process visualization of present invention offer, belongs to cement material freezing-thawing damage detection field.Include the following steps：Plane scan is carried out to cement-based material sample using X ray computer tomography scanned imagery apparatus, obtains scan image；Processing is optimized to the scan image, obtains optimization image；Three-dimensionalreconstruction is carried out using image is optimized described in computer disposal, obtain the cement-based material Sample Image of reconstruct, cement-based material Sample Image by that will pass through Frozen-thawed cycled is compared with without the cement-based material Sample Image of Frozen-thawed cycled, by the image contrast of cement-based material sample under different Frozen-thawed cycleds, obtain the rule of cement-based material sample unhydrated cement granules variation after different Frozen-thawed cycleds, according to changing rule, the inside and outside degree of injury of the cement material under corresponding Frozen-thawed cycled is calculated.Overcome common means of testing need destroy sample and can not long-term follow the defects of.
Description
Technical field
The present invention relates to cement material freezing-thawing damage detection technique field, more particularly to a kind of cement material freezing-thawing damage mistake
Test method is continuously tracked in journey visualization.
Background technology
Cement is to use a kind of most wide construction material now, and this material has good compressive property, plasticity high
And the features such as economical and practical.But cement-based material is in the long-term use, because being influenced by environment, especially in cold
Area is easy to happen freeze-thaw damage, and cement-based material surface is caused to peel off, and internal cleavage eventually leads to cement-based material resistance to compression
Reduced performance, internal dynamic modulus of elasticity decline, finally lose bearing capacity, bring serious consequence.Therefore to cement-based material
Deterioration under freeze-thaw cycles, detection, the problems such as reparation are one of the problem of mainly research in cement-based material.
Compression strength is mainly passed through for the evaluation criterion that the Frozen-thawed cycled of cement-based material sample destroys at present, relatively
The methods of dynamic modulus of elasticity and mass loss rate.These methods can not be right after Frozen-thawed cycled occurs and destroys to cement-based material
Its inner case carries out intuitive, reliable evaluation, while the evaluation method as compression strength, detects a sample all every time
It needs to destroy sample, can not accomplish long-term in-situ tracking analysis freeze-thaw damage analysis.
Invention content
The purpose of the present invention is to provide a kind of cement material freezing-thawing damage process visualizations, and test method is continuously tracked, can
Realize the freezing-thawing damage degree of lossless tracking and testing cement-based material sample in situ.
The present invention provides a kind of cement material freezing-thawing damage process visualizations, and test method, including following step is continuously tracked
Suddenly：Plane scan is carried out to cement-based material sample using X ray computer tomography scanned imagery apparatus, obtains scan image；
Processing is optimized to the scan image, obtains optimization image；
Three-dimensionalreconstruction is carried out using image is optimized described in computer disposal, obtains the cement-based material Sample Image of reconstruct,
By the way that the cement-based material Sample Image of Frozen-thawed cycled will be passed through and without the cement-based material Sample Image pair of Frozen-thawed cycled
Than by the image contrast of cement-based material sample under different Frozen-thawed cycleds, obtaining cement-based material sample in different Frozen-thawed cycleds
The rule of unhydrated cement granules variation afterwards, according to changing rule, calculate the cement material under corresponding Frozen-thawed cycled inside and
Outer damage degree.
Preferably, the optimization processing includes being handled by BH correction correcting process and enfeoffment program.
Preferably, the parameter of the X ray computer tomography scanned imagery apparatus is：The voltage of x-ray source is 60kv, electricity
Stream is 115 μ A, and x-ray source is 40mm with sample distance, and test panel is 205mm with sample distance, and slice pixel size is
11.0403 μm, optical magnification 0.4x, the time for exposure is 8 seconds.
Preferably, the test method that is continuously tracked specifically includes following steps：
401, using X ray computer tomography scanned imagery apparatus to the cement-based material sample layer without Frozen-thawed cycled
Surface scan optimizes processing to obtained scan image, and the image after the optimization processing is handled through computer and carries out three
Dimension reconstruct, obtains the cement-based material Sample Image without Frozen-thawed cycled of reconstruct；
402, Frozen-thawed cycled is carried out to cement-based material sample, recycles X ray computer tomography scanned imagery apparatus pair
Tomoscan is carried out by the cement-based material sample of Frozen-thawed cycled, processing is optimized to obtained tomoscan image, it will
The faultage image by optimization processing handles through computer and carries out three-dimensionalreconstruction, obtains the water by Frozen-thawed cycled of reconstruct
Cement-based material Sample Image；
403, the cement-based material Sample Image by Frozen-thawed cycled is tried with the cement-based material without Frozen-thawed cycled
Sampled images compare, and by by the image contrast of cement-based material sample under different Frozen-thawed cycleds, obtain cement-based material sample and exist
The rule of unhydrated cement granules variation calculates the cement under corresponding Frozen-thawed cycled according to changing rule after different Frozen-thawed cycleds
The inside and outside degree of injury of material.
Preferably, the temperature of Frozen-thawed cycled is 5~-15 DEG C in the step 402, and the time of each Frozen-thawed cycled is 4h.
Preferably, the cement-based material sample includes ordinary cement net slurry, mortar, concrete, mineral admixture cement
Or special cement cementitious material.
The present invention provides a kind of cement material freezing-thawing damage process visualizations, and test method is continuously tracked, and utilizes X-ray
Computer tomography scanned imagery apparatus carries out plane scan to cement-based material sample, obtains scan image；To the scanning figure
As optimizing processing, optimization image is obtained；Three-dimensionalreconstruction is carried out using image is optimized described in computer disposal, obtains reconstruct
Cement-based material Sample Image, by the way that the cement-based material Sample Image of Frozen-thawed cycled will be passed through and without the water of Frozen-thawed cycled
Cement-based material Sample Image compares, and by the image contrast of cement-based material sample under different Frozen-thawed cycleds, obtains cement-based material
Sample rule of unhydrated cement granules variation after different Frozen-thawed cycleds is calculated according to changing rule under corresponding Frozen-thawed cycled
Cement material inside and outside degree of injury.The present invention damages cement-based material sample sample under different freezing-thawing cycles
Hinder degree and carry out reliable, effective lossless in-situ test, overcome common means of testing need to destroy sample and can not for a long time with
The defects of track, realizes the intuitive of the internal injury situation for obtaining the cement-based material under different freezing-thawing cycles, reliably
Visualization result, the inside and outside degree of impairment for being cement-based material after Frozen-thawed cycled provides a kind of effective method
And foundation.
Description of the drawings
Fig. 1 is the working state schematic representation of X ray computer tomography scanned imagery apparatus of the embodiment of the present invention；
Fig. 2 is image of cement mortar of the embodiment of the present invention sample without the horizontal section 1 of Frozen-thawed cycled；
Fig. 3 is image of the cement mortar sample of the embodiment of the present invention by the horizontal section 1 of 17 Frozen-thawed cycleds；
Fig. 4 is image of the cement mortar sample of the embodiment of the present invention by the horizontal section 1 of 45 Frozen-thawed cycleds；
Fig. 5 is image of cement mortar of the embodiment of the present invention sample without the horizontal section 2 of Frozen-thawed cycled；
Fig. 6 is image of the cement mortar sample of the embodiment of the present invention by the horizontal section 2 of 17 Frozen-thawed cycleds；
Fig. 7 is image of the cement mortar sample of the embodiment of the present invention by the horizontal section 2 of 45 Frozen-thawed cycleds；
Fig. 8 is the external 3D rendering that cement mortar of embodiment of the present invention sample is obtained in the reconstruct without Frozen-thawed cycled；
Fig. 9 is the external 3D rendering that cement mortar sample of the embodiment of the present invention is obtained by the reconstruct of 17 Frozen-thawed cycleds；
Figure 10 is the external 3D rendering that cement mortar sample of the embodiment of the present invention is obtained by the reconstruct of 45 Frozen-thawed cycleds；
Internal fissure that Figure 11 is cement mortar of embodiment of the present invention sample to be obtained in the reconstruct without Frozen-thawed cycled and
Hole 3D rendering；
The internal fissure that Figure 12, which is cement mortar sample of the embodiment of the present invention, to be obtained by the reconstruct of 17 Frozen-thawed cycleds with
Hole 3D rendering；
The internal fissure that Figure 13, which is cement mortar sample of the embodiment of the present invention, to be obtained by the reconstruct of 45 Frozen-thawed cycleds with
Hole 3D rendering.
Specific implementation mode
The present invention provides a kind of cement material freezing-thawing damage process visualizations, and test method, including following step is continuously tracked
Suddenly：Plane scan is carried out to cement-based material sample using X ray computer tomography scanned imagery apparatus, obtains scan image；
Processing is optimized to the scan image, obtains optimization image；
Three-dimensionalreconstruction is carried out using image is optimized described in computer disposal, obtains the cement-based material Sample Image of reconstruct,
By the way that the cement-based material Sample Image of Frozen-thawed cycled will be passed through and without the cement-based material Sample Image pair of Frozen-thawed cycled
Than by the image contrast of cement-based material sample under different Frozen-thawed cycleds, obtaining cement-based material sample in different Frozen-thawed cycleds
The rule of unhydrated cement granules variation afterwards, according to changing rule, calculate the cement material under corresponding Frozen-thawed cycled inside and
Outer damage degree.
In the present invention, the optimization processing includes being handled by BH correction correcting process and enfeoffment program.
In the present invention, the BH correction correcting process reference《Application of segmentation for
correction of intensity bias in X-ray computed tomography images》, Iassonov P
Deng 2010；9(1):Content disclosed in 187~191.
In the present invention, the parameter of the X ray computer tomography scanned imagery apparatus is：The voltage of x-ray source is
60kv, electric current are 115 μ A, and x-ray source is 40mm with sample distance, and test panel is 205mm with sample distance, and slice pixel is big
Small is 11.0403 μm, optical magnification 0.4x, and the time for exposure is 8 seconds.
In the present invention, the test method that is continuously tracked specifically includes following steps：
401, using X ray computer tomography scanned imagery apparatus to the cement-based material sample layer without Frozen-thawed cycled
Surface scan optimizes processing to obtained scan image, and the image after the optimization processing is handled through computer and carries out three
Dimension reconstruct, obtains the cement-based material Sample Image without Frozen-thawed cycled of reconstruct；
402, Frozen-thawed cycled is carried out to cement-based material sample, recycles X ray computer tomography scanned imagery apparatus pair
Tomoscan is carried out by the cement-based material sample of Frozen-thawed cycled, processing is optimized to obtained tomoscan image, it will
The faultage image by optimization processing handles through computer and carries out three-dimensionalreconstruction, obtains the water by Frozen-thawed cycled of reconstruct
Cement-based material Sample Image；
403, the cement-based material Sample Image by Frozen-thawed cycled is tried with the cement-based material without Frozen-thawed cycled
Sampled images compare, and by by the image contrast of cement-based material sample under different Frozen-thawed cycleds, obtain cement-based material sample and exist
The rule of unhydrated cement granules variation calculates the cement under corresponding Frozen-thawed cycled according to changing rule after different Frozen-thawed cycleds
The inside and outside degree of injury of material.
In the present invention, the cement-based material sample includes ordinary cement net slurry, mortar, concrete, mineral admixture
Cement or special cement cementitious material.In the present invention, the preparation method of the cement-based material sample is preferably by cement sample
It is mixed with water and normal sand, obtains cement-based material sample.In the present invention, the quality of the cement sample and water and normal sand
Than being preferably 6:2:1.In the present invention, the cement sample preferably includes ordinary cement net slurry, mortar, concrete, mineral and mixes
Close material cement or special cement cementitious material.
The present invention does not have the time of the mixing special restriction, using hybrid mode well known to those skilled in the art
, specifically, as after stirring, it is subsequently poured into long 8mm, in the square mould of wide 8mm, high 8mm, uniformly vibrates, it is closely knit, at
Type, then carry out Frozen-thawed cycled.
The present invention does not have special restriction to the X ray computer tomography scanned imagery apparatus, using art technology
X ray computer tomography scanned imagery apparatus known to personnel, specifically, the X-ray as disclosed in CN104502379A
Computer tomography scanned imagery apparatus, as shown in Figure 1, wherein：1-X radiographic sources；2- objective tables, the objective table have 360 degree of rotations
The function of turning；3- samples；4- test panels；5- turrets, turret have the object lens of 3 different amplifications；6- is surveyed
Try instrument.
The present invention does not have the device of the Frozen-thawed cycled special restriction, using freeze thawing well known to those skilled in the art
Circulator.
In the present invention, the temperature of Frozen-thawed cycled is preferably 5~-15 DEG C in the step 402, each Frozen-thawed cycled when
Between preferably 4h.In the present invention, a Frozen-thawed cycled preferably includes following steps：Temperature drops to -15 DEG C of times from 5 DEG C
For 1.5h, it is 1h to be kept for -15 DEG C of times, and the time for being then warming up to 5 DEG C is 45min, and the time for being kept for 5 DEG C is 45min.This hair
The bright number to the Frozen-thawed cycled does not limit, and can measure the Frozen-thawed cycled damage of the cement material under arbitrary freezing-thawing cycles
Hinder degree, specifically, such as Frozen-thawed cycled 17 or 45 times.
In order to further illustrate the present invention, with reference to embodiment to cement material freezing-thawing damage process provided by the invention
Visualization is continuously tracked test method and is described in detail, but they cannot be interpreted as to the limit to the scope of the present invention
It is fixed.
Embodiment 1
Use the Portland cement (manufacturer of PO 42.5 (R) specification：Conch Co., Ltd of Germany and Britain), it uses
Meet the normal sand (manufacturer of national standard GB/T17671-1999 productions：Xiamen Aisiou Standard Sand Co., Ltd) and common use
Water, proportionally W:C:S=1:2:6 configuration cement mortar；With a length of 8mm, the square mould of width 8mm, a height of 8mm, so
Cement mortar is imported in mold afterwards, specimen surface is smoothed out, forms even curface, and vibrate, closely knit, molding；24h
After carry out form removal, be then placed within standard curing room (relative humidity be 95 ± 5%, temperature be 20 ± 2 DEG C) in maintenance 24 days, take
Go out sample, is put into the water that temperature is 20 DEG C ± 2 DEG C and impregnates 4 days, you can the cement mortar sample as freeze-thaw cycle test.
Test：DRKM150-20W Frozen-thawed cycleds instrument is led with Shenzhen section, and freeze-thaw cycle experiment is carried out to sample.
First, tomoscan is carried out to sample with three-dimensionalreconstruction imaging x-ray microscope to the sample without Frozen-thawed cycled
Test.
It is fixed on the central area of X ray computer CT Scan imaging device inner sample platform, closes instrument
Between test；
Test system is opened, adjusts camera lens at a distance from sample, makes its clear (this testing setup tester and sample distance
For 205mm) and then 360 ° of rotating sample, each of which angle is observed, ensures that each angle can capture clear picture；
Then tomoscan (manufacturer Xradia, model are carried out to sample with three-dimensionalreconstruction imaging x-ray microscope：
XCT- μ 400), and record as a result,
Three-dimensionalreconstruction imaging x-ray microscope is configured with X-ray source, sample table, turret, tester, after being used for
The three-dimensionalreconstruction software XMreconstructor of phase processing (XCT- μ 400 carry analysis software).
Open x-ray source, setup parameter value：Be arranged x-ray source voltage be 60kv, electric current be 115 μ A, x-ray source with
Sample distance is 40mm, and test panel is 205mm with sample distance, and slice pixel size is 11.0403 μm, optical magnification
For 0.4x, the time for exposure is 8 seconds.Then first time tomoscan is carried out to the sample without Frozen-thawed cycled, and records information.
Restructuring analysis：After XCT sweep tests are complete, reconstruction software XMreconstructor is carried to preceding with XCT- μ 400
The information of face test scanning carries out three-dimensionalreconstruction and slice analysis.
Freeze-thaw cycle experiment is carried out to sample, sets Frozen-thawed cycled minimum temperature as -15 DEG C, 5 DEG C of maximum temperature, chamber
Interior temperature drops to -15 DEG C of times from 5 DEG C as 1.5h, and it is 1h to be kept for -15 DEG C of times, and the time for being then warming up to 5 DEG C is 45min,
The time for being kept for 5 DEG C is 45min, one cycle total duration 4h.After 17 Frozen-thawed cycleds, sample is taken out, wipes surface away
Moisture carries out second of tomoscan test with three-dimensionalreconstruction imaging x-ray microscope by above-mentioned steps to sample.
Then freeze-thaw cycle experiment is carried out to sample, sets Frozen-thawed cycled minimum temperature as -15 DEG C, 5 DEG C of maximum temperature, from
5 DEG C drop to -15 DEG C of times as 1.5h, and it is 1h to be kept for -15 DEG C of times, and the time for being then warming up to 5 DEG C is 45min, is kept for 5 DEG C
Time is 45min, one cycle total duration 4h.After after 28 Frozen-thawed cycleds, the sample after Frozen-thawed cycled is taken out, is wiped
Surface moisture is removed, third time tomoscan test is carried out to sample with three-dimensionalreconstruction imaging x-ray microscope by above-mentioned steps.
By analysis it is known that under different freezing-thawing cycles, the variation of cement mortar sample interior degree of injury,
And it is observed that being continuously increased with number of freezing and thawing, sample inside cement slurry is detached with sand, and constantly forms connection
Crack.
Fig. 1 be the working state schematic representation of X ray computer tomography scanned imagery apparatus of the embodiment of the present invention wherein：1-X
Radiographic source；2- objective tables, the objective table have the function of 360 degree rotation；3- samples；4- test panels；5- turrets, object lens
Turntable has the object lens of 3 different amplifications；6- testers.
The image of horizontal section of the cement mortar sample under different freezing-thawing cycles and the 3-D view of reconstruct are as follows
Shown in Fig. 2~13, in Fig. 2~7, most bright is cement granules, and then slightly dark is hydrolysis product of cement and sand, most dark portion
Position is crack and hole.Wherein Fig. 2 is figure of cement mortar of the embodiment of the present invention sample without the horizontal section 1 of Frozen-thawed cycled
Picture；Fig. 3 is image of the cement mortar sample of the embodiment of the present invention by the horizontal section 1 of 17 Frozen-thawed cycleds；Fig. 4 is the present invention
Embodiment cement mortar sample passes through the image of the horizontal section 1 of 45 Frozen-thawed cycleds；Fig. 5 is cement mortar of the embodiment of the present invention
Sample without the horizontal section 2 of Frozen-thawed cycled image；Fig. 6 is that cement mortar sample of the embodiment of the present invention passes through 17 freeze thawing
The image of the horizontal section 2 of cycle；Fig. 7 is the horizontal section that cement mortar sample of the embodiment of the present invention passes through 45 Frozen-thawed cycleds
2 image；Fig. 8 is the external 3D rendering that cement mortar of embodiment of the present invention sample is obtained in the reconstruct without Frozen-thawed cycled；
Fig. 9 is the external 3D rendering that cement mortar sample of the embodiment of the present invention is obtained by the reconstruct of 17 Frozen-thawed cycleds；Figure 10 is this
The external 3D rendering that inventive embodiments cement mortar sample is obtained by the reconstruct of 45 Frozen-thawed cycleds；Figure 11 is implementation of the present invention
The internal fissure and hole 3D rendering that example cement mortar sample is obtained in the reconstruct without Frozen-thawed cycled；Figure 12 is of the invention real
It applies a cement mortar sample and passes through the internal fissure and hole 3D rendering that the reconstruct of 17 Frozen-thawed cycleds obtains；Figure 13 is the present invention
Embodiment cement mortar sample passes through the internal fissure and hole 3D rendering that the reconstruct of 45 Frozen-thawed cycleds obtains.By Fig. 2~13
As can be seen that the present invention carries out reliably, effectively cement-based material sample sample degree of injury under different freezing-thawing cycles
Lossless in-situ test, overcome common means of testing need destroy sample and can not long-term follow the defects of, realize acquisition exist
Intuitive, the reliable visualization result of the internal injury situation of cement-based material under different freezing-thawing cycles is cement base
Inside and outside degree of impairment of the material after Frozen-thawed cycled provides a kind of effective method and foundation.
The above is only a preferred embodiment of the present invention, it is not intended to limit the present invention in any form.It should
It points out, for those skilled in the art, without departing from the principle of the present invention, if can also make
Dry improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (6)
1. test method is continuously tracked in a kind of cement material freezing-thawing damage process visualization, include the following steps：Utilize roentgenometer
Calculation machine tomography scanned imagery apparatus carries out plane scan to cement-based material sample, obtains scan image；
Processing is optimized to the scan image, obtains optimization image；
Three-dimensionalreconstruction is carried out using image is optimized described in computer disposal, the cement-based material Sample Image of reconstruct is obtained, passes through
Cement-based material Sample Image by Frozen-thawed cycled is compared with the cement-based material Sample Image without Frozen-thawed cycled, it will
The image contrast of cement-based material sample under different Frozen-thawed cycleds obtains cement-based material sample non-water after different Frozen-thawed cycleds
The rule for changing cement granules variation calculates the inside and outside damage of the cement material under corresponding Frozen-thawed cycled according to changing rule
Hinder degree.
2. according to claim 1 be continuously tracked test method, which is characterized in that the optimization processing includes passing through BH
Correction correcting process and the processing of enfeoffment program.
3. according to claim 1 be continuously tracked test method, which is characterized in that the X ray computer tomoscan
The parameter of imaging device is：The voltage of x-ray source is 60kv, and electric current is 115 μ A, and x-ray source is 40mm, test with sample distance
Panel is 205mm with sample distance, and slice pixel size is 11.0403 μm, optical magnification 0.4x, the time for exposure 8
Second.
4. according to claim 1 or 2 or 3 be continuously tracked test method, which is characterized in that described that test side is continuously tracked
Method specifically includes following steps：
401, using X ray computer tomography scanned imagery apparatus to being swept without the cement-based material sample level of Frozen-thawed cycled
It retouches, processing is optimized to obtained scan image, the image after the optimization processing is handled through computer and carries out Three-dimensional Gravity
Structure obtains the cement-based material Sample Image without Frozen-thawed cycled of reconstruct；
402, Frozen-thawed cycled is carried out to cement-based material sample, recycles X ray computer tomography scanned imagery apparatus to passing through
The cement-based material sample of Frozen-thawed cycled carries out tomoscan, and processing is optimized to obtained tomoscan image, will be described
Faultage image by optimization processing is handled through computer carries out three-dimensionalreconstruction, obtains the cement base by Frozen-thawed cycled of reconstruct
Material sample image；
It 403, will be by the cement-based material Sample Image of Frozen-thawed cycled and without the cement-based material assay maps of Frozen-thawed cycled
As comparison obtains cement-based material sample in difference by by the image contrast of cement-based material sample under different Frozen-thawed cycleds
The rule of unhydrated cement granules variation calculates the cement material under corresponding Frozen-thawed cycled according to changing rule after Frozen-thawed cycled
Inside and outside degree of injury.
5. according to claim 4 be continuously tracked survey test method, which is characterized in that Frozen-thawed cycled in the step 402
Temperature be 5~-15 DEG C, time of each Frozen-thawed cycled is 4h.
6. according to claim 1 be continuously tracked survey test method, which is characterized in that the cement-based material sample includes
Ordinary cement net slurry, mortar, concrete, mineral admixture cement or special cement cementitious material.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110006931A (en) * | 2019-04-23 | 2019-07-12 | 西安增材制造国家研究院有限公司 | A kind of industry CT and its application online |
| CN113406122A (en) * | 2021-06-15 | 2021-09-17 | 北京航星机器制造有限公司 | Double-mechanical-arm digital ray detection device and automatic detection method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1504169A (en) * | 2002-12-02 | 2004-06-16 | Ge医药***环球科技公司 | Beam hardening post-processing method and x-ray ct apparatus |
| CN103389314A (en) * | 2013-07-29 | 2013-11-13 | 河海大学 | Microstructure detection method for freezing-thawing damage of cement-based materials |
| CN103648392A (en) * | 2011-07-12 | 2014-03-19 | 株式会社日立医疗器械 | X-ray CT device, calculation device, recording medium for x-ray CT device, and maintenance method for x-ray CT device |
| CN104502379A (en) * | 2014-12-31 | 2015-04-08 | 深圳大学 | Method for testing corrosion of reinforcing steel bar inside concrete sample |
-
2018
- 2018-03-12 CN CN201810200892.8A patent/CN108519394A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1504169A (en) * | 2002-12-02 | 2004-06-16 | Ge医药***环球科技公司 | Beam hardening post-processing method and x-ray ct apparatus |
| CN103648392A (en) * | 2011-07-12 | 2014-03-19 | 株式会社日立医疗器械 | X-ray CT device, calculation device, recording medium for x-ray CT device, and maintenance method for x-ray CT device |
| CN103389314A (en) * | 2013-07-29 | 2013-11-13 | 河海大学 | Microstructure detection method for freezing-thawing damage of cement-based materials |
| CN103389314B (en) * | 2013-07-29 | 2015-12-23 | 河海大学 | A kind of microstructure detection method of cement-based material freezing-thawing damage |
| CN104502379A (en) * | 2014-12-31 | 2015-04-08 | 深圳大学 | Method for testing corrosion of reinforcing steel bar inside concrete sample |
Non-Patent Citations (3)
| Title |
|---|
| 张建保等: "《中国生物医学工程进展 上》", 30 April 2007 * |
| 杨斌等: "《干混砂浆及其试验方法标准汇编下》", 31 January 2013 * |
| 田威等: "基于 CT 技术的混凝土孔隙结构冻融损伤试验", 《中南大学学报(自然科学版)》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110006931A (en) * | 2019-04-23 | 2019-07-12 | 西安增材制造国家研究院有限公司 | A kind of industry CT and its application online |
| CN113406122A (en) * | 2021-06-15 | 2021-09-17 | 北京航星机器制造有限公司 | Double-mechanical-arm digital ray detection device and automatic detection method |
| CN113406122B (en) * | 2021-06-15 | 2022-11-15 | 北京航星机器制造有限公司 | Double-mechanical-arm digital ray detection device and automatic detection method |
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