CN106596358A - Pervious concrete aggregate particle size measurement method based on image processing - Google Patents
Pervious concrete aggregate particle size measurement method based on image processing Download PDFInfo
- Publication number
- CN106596358A CN106596358A CN201611114431.6A CN201611114431A CN106596358A CN 106596358 A CN106596358 A CN 106596358A CN 201611114431 A CN201611114431 A CN 201611114431A CN 106596358 A CN106596358 A CN 106596358A
- Authority
- CN
- China
- Prior art keywords
- aggregate
- pervious concrete
- particle
- materials
- particle size
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002245 particle Substances 0.000 title claims abstract description 50
- 239000011380 pervious concrete Substances 0.000 title claims abstract description 41
- 238000012545 processing Methods 0.000 title claims abstract description 17
- 238000000691 measurement method Methods 0.000 title abstract 2
- 238000000034 method Methods 0.000 claims abstract description 25
- 238000006243 chemical reaction Methods 0.000 claims abstract description 5
- 230000002087 whitening effect Effects 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 55
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 239000002689 soil Substances 0.000 claims description 6
- 239000004567 concrete Substances 0.000 claims description 3
- 238000012935 Averaging Methods 0.000 claims description 2
- 230000003321 amplification Effects 0.000 claims 1
- 238000003199 nucleic acid amplification method Methods 0.000 claims 1
- 230000036571 hydration Effects 0.000 abstract 1
- 238000006703 hydration reaction Methods 0.000 abstract 1
- 239000012615 aggregate Substances 0.000 description 14
- 239000007787 solid Substances 0.000 description 9
- 238000012360 testing method Methods 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 230000015271 coagulation Effects 0.000 description 4
- 238000005345 coagulation Methods 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000010191 image analysis Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000002688 soil aggregate Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/02—Investigating particle size or size distribution
- G01N15/0205—Investigating particle size or size distribution by optical means
- G01N15/0227—Investigating particle size or size distribution by optical means using imaging; using holography
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
Abstract
The invention discloses a pervious concrete aggregate particle size measurement method based on image processing. The method comprises the steps that a set quantity of pervious concrete aggregates are selected to be placed on white paper, a ruler with scales is placed, a square area is shot, and a digital photo is obtained; the digital photo is processed, and conversion of a pixel value and a millimeter distance value is completed; blackening and whitening processing is conducted; the particle size area of each particle is output, each aggregate particle is assumed as a circle, and the particle size is calculated; the particle sizes of all the aggregate particles in different shooting angles are averaged, and the initial particle size di0 of the i<th> aggregate particle of pervious concrete is obtained; the aggregate volume expansion rate caused by a hydration product is calculated, the aggregate diameter enlarging rate is calculated through the aggregate volume expansion rate, the aggregate equivalent particle size is calculated through the aggregate diameter enlarging rate, correction on the initial particle size di0 of the i<th> aggregate particle of the pervious concrete is completed, and the equivalent particle size Di of the i<th> aggregate particle is obtained. The method has the advantages that operation is easy, processing is convenient, and a final result is stable and reliable.
Description
Technical field
The present invention relates to a kind of pervious concrete aggregate size measuring method based on image procossing.
Background technology
Compared with normal concrete, pervious concrete has ventilative, permeable, sqouynd absorption lowering noise, purifying water body, improves ground surface soil
The excellent performance of the ecological environment of earth, alleviation rainwash and urban heat land effect etc..Therefore, in sustainable development and dimension
Under the guidances of thought such as shield ecological balance, some developed countries such as America and Europe, Japan and Korea S began to study before more than 50 years and apply
Water coagulation soil.In recent years, domestic research and application to pervious concrete is more and more extensive.Pervious concrete, it is mixed also known as porous
Solidifying soil, is made up of coarse aggregate, water and cement etc., using coarse aggregate as skeleton, the size of coarse aggregate and uneven
Coefficient has important impact to the permeance property of pervious concrete.
The measuring method of conventional grain diameter is sieve method.By sieve test, particle size distribution can be obtained, be led to
Cross and obtain grading curve using the analysis of volume, area or amounts of particles.Traditional sieve method measurement accuracy is poor, workload
Greatly, and due to national standard specification《Building sand》(GB/T14684-2011) the screening pore size of regulation includes 0.15,
0.3,0.6,1.18,2.36,4.75 and 9.5mm, without the aperture between 4.75 and 9.5 millimeters, and pervious concrete test specimen is tried
What is commonly used in testing is the limestone gravel of 4.75～9.5mm, only cannot be gathered materials-plugging material size by sieve test
Than, therefore cannot further be studied.
Prior art does not often all account for the cubical expansivity that gathers materials that hydrated product causes, and causes measurement result not accurate enough
Really.
The content of the invention
The purpose of the present invention is exactly to solve the above problems, there is provided a kind of pervious concrete based on image procossing gathers materials
Particle size measurement procedure, it has simple to operate, process convenience, and the reliable and stable advantage of final result.
To achieve these goals, the present invention is adopted the following technical scheme that：
Based on the pervious concrete aggregate size measuring method of image procossing, comprise the following steps：
Step (1)：The pervious concrete of selection setting quantity gathers materials and is placed on blank sheet of paper, it is ensured that do not occur between aggregate particle
Overlap, place one graduated ruler, the ruler is used for pixel value and distance value in image processing process as scale
Conversion；
Step (2)：3,000,000 digital camera is not less than using pixel, square area is shot, digital photo is obtained；
Step (3)：The digital photo of step (2) is processed using ImageJ image processing softwares, by photograph
The relation between millimeter distance value and pixel value on ruler, completes the conversion of pixel value and millimeter distance value；
Step (4)：The photograph that step (3) is obtained is carried out into black whitening processing；
Step (5)：Each grain diameter area is exported using ImageJ image processing softwares, aggregate particle is assumed to be
Circle, calculates size；
Step (6)：Repeat step (1)-(5) calculate the size of each aggregate particle particle diameter under different shooting angles, right
Each aggregate particle particle diameter is averaging under different shooting angles, obtains initial particle d of i-th aggregate particle of pervious concretei0；
Step (7)：The cubical expansivity that gathers materials that hydrated product causes first is calculated, is calculated using the cubical expansivity that gathers materials and is gathered materials
Enlarged-diameter rate, by gathering materials, enlarged-diameter rate is further calculated equivalent grain size of gathering materials, so as to complete to pervious concrete
Initial particle d of i-th aggregate particlei0It is modified, finally gives equivalent grain size D of i-th aggregate particlei。
The calculating process of what the hydrated product caused gather materials cubical expansivity is：
In formula：RVFor cubical expansivity, if there is no hydrated product coating, R on gathering materialsVTake 1；VaIt is per cubic metre
The volume gathered materials in pervious concrete；maIt is the quality gathered materials in every cubic metre of pervious concrete；ρaFor the density gathered materials；P is
The porosity of water coagulation soil.
It is described gather materials enlarged-diameter rate calculating process be：
RdEnlarged-diameter of gathering materials rate.
The calculating process of the equivalent grain size of gathering materials is：
Di=Rd*di0 (3)。
Beneficial effects of the present invention：
1 has obtained extensive concern, image analysis technology with the development of modernization, image analysis technology in Material Field
Also applied in celluar concrete internal void properties study, but it is current domestic saturating using image processing techniquess analysis
Water coagulation soil aggregate grading is very few to the influence research that pervious concrete is blocked.
In consideration of it, this patent proposes that maximum, minimum grain size and the particle diameter for gathering materials is analyzed using image processing techniquess is big
Little, while the consideration of this patent novelty is gathered materials, (rubble) is covered by hydrolysis product of cement, and solid particle size " increases ",
The equivalent features size of solid particle in pervious concrete (having hydrated product coating to gather materials) is modified, collection is calculated
Material-plugging material size ratio.
2 cannot be gathered materials-plugging material size ratio by sieve test, so need by image analysis processing skill
Art, compared to the grading curve that sieve test is obtained, image procossing can be very good and accurately obtain continuous grading curve,
Help further research of the research grain composition to pervious concrete pore plugging.
3 further to obtaining pervious concrete in solid particle (having hydrated product coating to gather materials) be modified,
Obtain equivalent features size, and then lay the groundwork to study impact of the grain composition to pervious concrete other performances from now on.、
4 present invention determine the aggregate size size of pervious concrete using image processing meanses, and it is modified, and obtain
To equivalent grain size size, experimental implementation is simple, convenient data processing, and final result is reliable and stable, and data can be further
For studying the correlated performances such as the impact that grain composition is blocked to pervious concrete.
Description of the drawings
Fig. 1 is that solid particle volume increases schematic diagram in pervious concrete；
Fig. 2 is artwork in kind of gathering materials；
Fig. 3 is the black white binarization figure that gathers materials；
Fig. 4 is flow chart.
Specific embodiment
Below in conjunction with the accompanying drawings the invention will be further described with embodiment.
At present, in pervious concrete test specimen manufacturing process, pervious concrete gather materials (rubble) produced by hydrated cementitious
Thing is covered, and solid particle size " increases ", and the space between gathering materials is filled, and can affect seepage flow and blocking process, therefore this
The situation for considering the increase of solid particle volume of patent innovation.Solid particle volume increases schematic diagram and sees Fig. 1.
Volume between pervious concrete test specimen solid particle includes the volume of the volume and hydrated product coating for gathering materials.Water
The cubical expansivity that gathers materials that change product causes can be obtained by pervious concrete solid volume divided by volume of gathering materials：
In formula：RVFor cubical expansivity, if there is no hydrated product coating, R on gathering materialsVTake 1；VaIt is per cubic metre
The volume gathered materials in pervious concrete；maIt is the quality gathered materials in every cubic metre of pervious concrete；ρaFor the density gathered materials；P is
The porosity of water coagulation soil.
The enlarged-diameter rate that further can obtain gathering materials is：
Then the equivalent grain size that obtains gathering materials is：
D=Rd*d0
D is equivalent grain size of gathering materials, RdEnlarged-diameter of gathering materials rate, d0Initial particle.
Fig. 2 show artwork in kind of gathering materials；Fig. 3 show the black white binarization figure that gathers materials；What Fig. 4 was represented is flow chart.
Although the above-mentioned accompanying drawing that combines is described to the specific embodiment of the present invention, not to present invention protection model
The restriction enclosed, one of ordinary skill in the art should be understood that on the basis of technical scheme those skilled in the art are not
Need the various modifications made by paying creative work or deformation still within protection scope of the present invention.
Claims (4)
1. the pervious concrete aggregate size measuring method based on image procossing, is characterized in that, comprise the following steps：
Step (1)：The pervious concrete of selection setting quantity gathers materials and is placed on blank sheet of paper, it is ensured that weight does not occur between aggregate particle
It is folded, one is placed graduated ruler, the ruler is used for pixel value and distance value in image processing process as scale
Conversion；
Step (2)：3,000,000 digital camera is not less than using pixel, square area is shot, digital photo is obtained；
Step (3)：The digital photo of step (2) is processed using ImageJ image processing softwares, by ruler in photograph
On millimeter distance value and pixel value between relation, complete the conversion of pixel value and millimeter distance value；
Step (4)：The photograph that step (3) is obtained is carried out into black whitening processing；
Step (5)：Each grain diameter area is exported using ImageJ image processing softwares, aggregate particle is assumed to be into circle, counted
Calculate size；
Step (6)：Repeat step (1)-(5) calculate the size of each aggregate particle particle diameter under different shooting angles, to difference
Each aggregate particle particle diameter is averaging under shooting angle, obtains initial particle d of i-th aggregate particle of pervious concretei0；
Step (7)：The cubical expansivity that gathers materials that hydrated product causes first is calculated, cubical expansivity calculates the diameter that gathers materials using gathering materials
Amplification degree, by gathering materials, enlarged-diameter rate is further calculated equivalent grain size of gathering materials, so as to complete to i-th of pervious concrete
Initial particle d of aggregate particlei0It is modified, finally gives equivalent grain size D of i-th aggregate particlei。
2. the pervious concrete aggregate size measuring method based on image procossing as claimed in claim 1, is characterized in that, described
The calculating process of what hydrated product caused gather materials cubical expansivity is：
In formula：RVFor cubical expansivity, if there is no hydrated product coating, R on gathering materialsVTake 1；VaIt is per cubic metre permeable
The volume gathered materials in concrete；maIt is the quality gathered materials in every cubic metre of pervious concrete；ρaFor the density gathered materials；P is permeable mixed
Coagulate the porosity of soil.
3. the pervious concrete aggregate size measuring method based on image procossing as claimed in claim 1, is characterized in that, described
The calculating process of enlarged-diameter of gathering materials rate is：
RdEnlarged-diameter of gathering materials rate.
4. the pervious concrete aggregate size measuring method based on image procossing as claimed in claim 1, is characterized in that, described
The calculating process of equivalent grain size of gathering materials is：
Di=Rd*di0 (3)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611114431.6A CN106596358A (en) | 2016-12-07 | 2016-12-07 | Pervious concrete aggregate particle size measurement method based on image processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611114431.6A CN106596358A (en) | 2016-12-07 | 2016-12-07 | Pervious concrete aggregate particle size measurement method based on image processing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106596358A true CN106596358A (en) | 2017-04-26 |
Family
ID=58596719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611114431.6A Pending CN106596358A (en) | 2016-12-07 | 2016-12-07 | Pervious concrete aggregate particle size measurement method based on image processing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106596358A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108225989A (en) * | 2017-12-20 | 2018-06-29 | 中国电建集团河南省电力勘测设计院有限公司 | A kind of great soil group quickly names method and storage medium |
| CN108444875A (en) * | 2018-02-25 | 2018-08-24 | 四川大学 | Natural river bed surface sand grain particle diameter distribution measurement method based on aerial survey of unmanned aerial vehicle |
| CN111707587A (en) * | 2020-06-04 | 2020-09-25 | 核工业北京地质研究院 | Particle size statistical method |
| CN113109219A (en) * | 2021-04-29 | 2021-07-13 | 重庆交通大学 | Image analysis-based coarse aggregate gradation monitoring method for asphalt pavement |
| CN116330516A (en) * | 2023-05-29 | 2023-06-27 | 乳山市东方硅胶有限公司 | Particle size control system of silica gel particle production equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101263362A (en) * | 2005-09-15 | 2008-09-10 | 关西工事测量株式会社 | Optical device, and method of measuring the dimension of object using optical device |
| JP2008268051A (en) * | 2007-04-23 | 2008-11-06 | Zenkoku Nama Concrete Kogyo Kumiai Rengokai | Method and system for measuring freshly mixed concrete aggregate particle size |
| CN102012356A (en) * | 2010-11-25 | 2011-04-13 | 东南大学 | Quick test method for aggregate grade of asphalt concrete pavement |
| JP2011106923A (en) * | 2009-11-16 | 2011-06-02 | Taisei Corp | Particle size specifying method and particle size specifying system for granular material |
| CN105510195A (en) * | 2015-12-07 | 2016-04-20 | 华侨大学 | On-line detection method for particle size and shape of stacked aggregate |
-
2016
- 2016-12-07 CN CN201611114431.6A patent/CN106596358A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101263362A (en) * | 2005-09-15 | 2008-09-10 | 关西工事测量株式会社 | Optical device, and method of measuring the dimension of object using optical device |
| JP2008268051A (en) * | 2007-04-23 | 2008-11-06 | Zenkoku Nama Concrete Kogyo Kumiai Rengokai | Method and system for measuring freshly mixed concrete aggregate particle size |
| JP2011106923A (en) * | 2009-11-16 | 2011-06-02 | Taisei Corp | Particle size specifying method and particle size specifying system for granular material |
| CN102012356A (en) * | 2010-11-25 | 2011-04-13 | 东南大学 | Quick test method for aggregate grade of asphalt concrete pavement |
| CN105510195A (en) * | 2015-12-07 | 2016-04-20 | 华侨大学 | On-line detection method for particle size and shape of stacked aggregate |
Non-Patent Citations (5)
| Title |
|---|
| ANNA-LENA PERSSON: ""Image analysis of shape and size of fine aggregates"", 《ENGINEERING GEOLOGY》 * |
| MURAT OZEN,MURAT GULER: ""Assessment of optimum threshold and particle shape parameter for the image analysis of aggregate size distribution of concrete sections"", 《OPTICS AND LASERS IN ENGINEERING》 * |
| 史源: ""基于LabVIEW的集料颗粒检测与级配分析"", 《中国优秀硕士学位论文全文数据库 信息科技辑》 * |
| 崔新壮 等: ""暴雨作用下透水混凝土路面快速堵塞试验模拟"", 《中国公路学报》 * |
| 李晓军 等: ""等粒径多孔水泥混凝土内部结构与破坏机理"", 《公路交通科技》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108225989A (en) * | 2017-12-20 | 2018-06-29 | 中国电建集团河南省电力勘测设计院有限公司 | A kind of great soil group quickly names method and storage medium |
| CN108444875A (en) * | 2018-02-25 | 2018-08-24 | 四川大学 | Natural river bed surface sand grain particle diameter distribution measurement method based on aerial survey of unmanned aerial vehicle |
| CN111707587A (en) * | 2020-06-04 | 2020-09-25 | 核工业北京地质研究院 | Particle size statistical method |
| CN113109219A (en) * | 2021-04-29 | 2021-07-13 | 重庆交通大学 | Image analysis-based coarse aggregate gradation monitoring method for asphalt pavement |
| CN116330516A (en) * | 2023-05-29 | 2023-06-27 | 乳山市东方硅胶有限公司 | Particle size control system of silica gel particle production equipment |
| CN116330516B (en) * | 2023-05-29 | 2023-08-29 | 乳山市东方硅胶有限公司 | Particle size control system of silica gel particle production equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106596358A (en) | Pervious concrete aggregate particle size measurement method based on image processing | |
| Yamei et al. | Effect of particle shape of limestone manufactured sand and natural sand on concrete | |
| CN103971002A (en) | Method for calculating relative permeability coefficient of unsaturated soil | |
| CN103134906B (en) | Coarse particle contraction rule method based on fractal theory | |
| CN104596911A (en) | Method for detecting character of pores of pervious concrete by processing images | |
| CN106908369B (en) | Measure rubble-high polymer composite material pore characteristic device and operating method | |
| CN104628319B (en) | A kind of permeable concrete containing riverway sludge powder and concrete brick | |
| CN107244822A (en) | Richness starches the method that the cementing sand gravel that vibrates is prepared and constructed for antiseepage protection structure | |
| CN103964770B (en) | Add preparation method starching cement sand and gravel of vibrating and products thereof | |
| CN108867232A (en) | A kind of half-flexible pavement reserves the calculation method of grout penetration | |
| CN110349123A (en) | A kind of quantitative evaluation method of apparent mass of clear concrete | |
| CN107500658A (en) | A kind of matching method of closely knit concrete | |
| Wang et al. | Failure mechanism and conservation of the ancient seawall structure along Hangzhou Bay, China | |
| CN108589457B (en) | The modification method of two high dirt road based fillers | |
| CN105753391A (en) | Fair-faced concrete mix proportion design method and related fair-faced concrete | |
| CN106257466B (en) | A kind of determination method of mixture compaction test predetermined moisture content | |
| CN104634692A (en) | Method for determining cement content of building mortar | |
| CN106644855A (en) | Measuring method for particle diameter of blocking particles in pervious concrete, and pervious concrete grading detection method | |
| CN107643243A (en) | The measure device and method of pervious concrete porosity distribution | |
| CN103940721B (en) | One newly mixes cellular concrete material porosity rapid assay methods | |
| CN207336315U (en) | The measurement device of pervious concrete porosity distribution | |
| CN112697636A (en) | Rapid and accurate determination method for mud content of sand for building | |
| CN112593579A (en) | Karst mountain land clay-doped clay purified sewage anti-seepage soft pit and construction method thereof | |
| Jabro et al. | Evaluation and comparison of five simulation models for estimating water drainage fluxes under corn | |
| CN101892686B (en) | Composite current collecting field and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170426 |
|
| RJ01 | Rejection of invention patent application after publication |