CN106770327A - A kind of quantitative detecting method of the surface corrosion area for hot-rolled reinforced bar - Google Patents
A kind of quantitative detecting method of the surface corrosion area for hot-rolled reinforced bar Download PDFInfo
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- CN106770327A CN106770327A CN201611219967.4A CN201611219967A CN106770327A CN 106770327 A CN106770327 A CN 106770327A CN 201611219967 A CN201611219967 A CN 201611219967A CN 106770327 A CN106770327 A CN 106770327A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/28—Measuring arrangements characterised by the use of optical techniques for measuring areas
- G01B11/285—Measuring arrangements characterised by the use of optical techniques for measuring areas using photoelectric detection means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
- G01N2021/8854—Grading and classifying of flaws
- G01N2021/8874—Taking dimensions of defect into account
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
- G01N2021/8887—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges based on image processing techniques
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
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- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
A kind of quantitative detecting method of surface corrosion area for hot-rolled reinforced bar, belongs to surface quality of steel assessment technique field.It is equipped with the computer of Imagetool image analysis softwares, using Imagetool image analysis softwares, to collecting containing the graphical analysis for having surveyed rebar surface, according to the aberration of corrosion part and unattacked part, ratio shared by rebar surface corrosion area is measured, is quantitatively described according to measurement result.Advantage is, compared with other steel bar corrosion detection methods, can carry out quantitative assessment to corrosion degree；Required equipment is simple；Software is easily operated, is easy to learning and mastering.
Description
Technical field
The invention belongs to surface quality of steel assessment technique field, more particularly to a kind of surface rust for hot-rolled reinforced bar
Lose the quantitative detecting method of area.
Background technology
In architectural engineering, armored concrete is cheap extensively and by civil engineering because having the advantages that sturdy and durable and material
Every field is generally used.But hot-rolled reinforced bar air storage, due to humid environment, is corroded by sleet, and rust staining occurs in surface, with
The growth of time, it may occur that the phenomenon of abrasion.After steel bar corrosion, following consequence can be produced：(1) steel bar corrosion, causes to cut
Area is reduced, so that the mechanics row of reinforcing bar declines.(2) under steel bar corrosion causes the bond strength between reinforcing bar and concrete
Drop.(3) steel bar corrosion generation corrosion product, its volume is 2-4 times of matrix material, and corrosion product is between reinforcing bar and concrete
Accumulation, forms pressure so that concrete cracking, peeling to concrete.
For the detection method of Corrosion Reinforcement, mainly detected using electrochemical method, judged according to electrochemical parameter.
Electrochemical method detection steel bar corrosion is a kind of qualitative method.Common method of testing has：(1) half-cell prtential method：Use current potential
Value judge reinforcing bar whether standard (2) commerical ready-mixed concrete resistivity method of corrosion：Differentiate corrosion with the resistivity of commerical ready-mixed concrete
Speed；(3) corrosion electric current density method：The corrosion amount of following reinforcing bar is may infer that with the corrosion electric current of the reinforcing bar measured.Relevant steel
Each state of test method of muscle corrosion state has all formulated country or the professional standard of correlation, but by existing detection hand
Section only can carry out qualitative analysis to steel bar corrosion state, it is impossible to make important quantitative analysis.
The content of the invention
It is an object of the invention to provide a kind of quantitative detecting method of the surface corrosion area for hot-rolled reinforced bar, to solve
Certainly existing rust detection method to rebar surface corrosion cannot quantitative assessment problem.To reach above-mentioned purpose, the present invention is adopted
Technical scheme is：
The present invention is equipped with the computer of Imagetool image analysis softwares, soft using Imagetool graphical analyses
Part, to collecting containing having surveyed the graphical analysis of rebar surface, according to the aberration of corrosion part and unattacked part, to bar list
Ratio shared by face corrosion area is measured, and is quantitatively described according to measurement result.Comprise the following steps：
(1) photochrome containing rusty surface is shot using digital camera on corrosion area measurement reinforcing bar, photo will
Ask clear, background colour requirement is pure white.
(2) photo in step (1) is imported into the computer equipped with Imagetool softwares, and utilizes picture editting
Photo is trimmed to whole photo and there was only tested reinforcing bar by software, as shown in Figure 1.
(3) in the computer equipped with Imagetool softwares, Imagetool softwares are opened.And using in software
" Open Image " is ordered, and the photo in step (2) is opened.And using " Zoom In " or " Zoom Out " in toolbar
Order adjustment photographic scale so that photo is able to display all over the screen in the window, as shown in Figure 2.
(4) using " Color-to-Grayscale " order in " Processing " order of Imagetool softwares, will
The photochrome that step (3) is opened is converted to gray scale pictures, is ordered also with " Zoom In " in toolbar or " Zoom Out "
Order adjustment photographic scale so that photo is able to display all over the screen in the window, as shown in Figure 3.
(5) using in " Threshold " order in " Processing " order of Imagetool softwares
" Mannul ", order, adjusts threshold value manually, is got rusty situation according to rebar surface, by adjusting thresholds to desired value so that individual reinforcing bar
Surface oxidisation part is able to all with red display, as shown in Figure 4.
(6) mouse is put into the correct position of properly " Threshold " dialog box so that in the dialog box in " Status "
" V " value is identical with numerical value in " Range ", and now " % " value in " Status " is the whole rebar surface that accounts for of corrosion area
Percentage, as shown in Figure 5.
The quantitative detecting method of the surface corrosion area of hot-rolled reinforced bar of the present invention, using computer, using above-mentioned
Imagetool image analysis softwares, the rust area to reinforcing bar can carry out relatively accurate quantitative assessment.
Compared with other steel bar corrosion detection methods, this method has the following advantages that：(1) corrosion degree can be determined
Amount is evaluated.(2) equipment is simple needed for.(3) software is easily operated, is easy to grasp.
Brief description of the drawings
Fig. 1 hot rolled ribbed bars get rusty photo.
Photo is opened schematic diagram by Fig. 2 in Imagetool softwares.
Photochrome is converted into gray scale pictures by Fig. 3 in Imagetool softwares.
In " Threshold " orders of Fig. 4 in regulation " Processing " order in Imagetool softwares
" Mannul " order threshold value schematic diagram
Fig. 5 adjusts " V " value and " Range " in " Threshold " dialog box in " Status " in Imagetool softwares
Middle numerical value identical schematic diagram.
Specific embodiment
The present invention is comprised the following steps：
(1) photochrome containing rusty surface is shot using digital camera on corrosion area measurement reinforcing bar, photo will
Ask clear, background colour requirement is pure white.
(2) photo in step (1) is imported into the computer equipped with Imagetool softwares, and utilizes picture editting
Photo is trimmed to whole photo and there was only tested reinforcing bar by software, as shown in Figure 1.
(3) in the computer equipped with Imagetool softwares, Imagetool softwares are opened.And using in software
" Open Image " is ordered, and the photo in step (2) is opened.And using " Zoom In " or " Zoom Out " in toolbar
Order adjustment photographic scale so that photo is able to display all over the screen in the window, as shown in Figure 2.
(4) using " Color-to-Grayscale " order in " Processing " order of Imagetool softwares, will
The photochrome that step (3) is opened is converted to gray scale pictures, is ordered also with " Zoom In " in toolbar or " Zoom Out "
Order adjustment photographic scale so that photo is able to display all over the screen in the window, as shown in Figure 3.
(5) using in " Threshold " order in " Processing " order of Imagetool softwares
" Mannul ", order, adjusts threshold value manually, is got rusty situation according to rebar surface, by adjusting thresholds to desired value so that individual reinforcing bar
Surface oxidisation part is able to all with red display, as shown in Figure 4.
(6) mouse is put into the correct position of properly " Threshold " dialog box so that in the dialog box in " Status "
" V " value is identical with numerical value in " Range ", and now " % " value in " Status " is the whole rebar surface that accounts for of corrosion area
Percentage, as shown in Figure 5.
In order to be more clearly understood to technical characteristic of the invention, purpose and effect, now control illustrates this hair
Bright specific embodiment.
The present invention uses the computer equipped with Imagetool softwares, using Imagetool image analysis softwares, to collection
To containing having surveyed the graphical analysis of rebar surface, according to the aberration of corrosion part and unattacked part, to rebar surface rust surface
The shared ratio of product carries out quantitative measurment, is quantitatively described according to measurement result.
As shown in figure 1, the present invention uses digital camera, the hot-rolled ribbed photochrome containing rusty surface, photo are shot
It is required that clear, background colour requirement is pure white, and is conducted into the computer equipped with Imagetool softwares, using image
Photo is trimmed to whole photo and there was only tested reinforcing bar by software for editing.
As shown in Fig. 2 the present invention is using " Open Image " order in Imagetool softwares, the hot rolling that will be trimmed
The photo of Ribbed Bar is opened.And using " Zoom In " order adjustment photo in software, ratio is 1:4.
As shown in figure 3, the present invention is using " the Color-to- in " Processing " order of Imagetool softwares
Grayscale " is ordered, and the photochrome of reinforcing bar is converted into gray scale pictures, is adjusted also with " Zoom In " order in toolbar
Whole photo, ratio is 1:4.
As shown in figure 4, the present invention is using " Threshold " life in " Processing " order of Imagetool softwares
" Mannul " order in order, adjusts threshold value manually, is got rusty situation according to rebar surface, by " Range " adjusting thresholds to 0-85.
As shown in figure 5, mouse to be put into the present invention correct position of properly " Threshold " dialog box so that the dialog box
In " V " value in " Status " it is identical with numerical value in " Range ", be 85.Now " % " in " Status " is value as corrosion
The percentage for accounting for whole rebar surface of area, the present embodiment is 27.21%.
Claims (1)
1. the quantitative detecting method of a kind of surface corrosion area for hot-rolled reinforced bar, it is characterised in that comprise the following steps：
(1) photochrome containing rusty surface is shot using digital camera on corrosion area measurement reinforcing bar, photo requirement is clear
Clear, background colour requirement is pure white；
(2) photo in step (1) is imported into the computer equipped with Imagetool softwares, and utilizes image editing software
Photo is trimmed to whole photo and there was only tested reinforcing bar；
(3) in the computer equipped with Imagetool softwares, Imagetool softwares are opened, and using the " Open in software
Image " is ordered, and the photo in step (2) is opened, and is adjusted using " Zoom In " or " Zoom Out " order in toolbar
Whole photographic scale so that photo is able to display all over the screen in the window；
(4) using " Color-to-Grayscale " order in " Processing " order of Imagetool softwares, by step
(3) photochrome opened is converted to gray scale pictures, is ordered also with " Zoom In " in toolbar or " Zoom Out " and adjusted
Whole photographic scale so that photo is able to display all over the screen in the window；
(5) using " Mannul " in " Threshold " order in " Processing " order of Imagetool softwares, life
Order, adjusts threshold value manually, is got rusty situation according to rebar surface, by adjusting thresholds to desired value so that individual rebar surface gets rusty portion
Get with all with red display；
(6) mouse is put into the correct position of properly " Threshold " dialog box so that " V " in the dialog box in " Status "
Value is identical with numerical value in " Range ", and now " % " value in " Status " is account for whole rebar surface the hundred of corrosion area
Divide ratio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611219967.4A CN106770327A (en) | 2016-12-26 | 2016-12-26 | A kind of quantitative detecting method of the surface corrosion area for hot-rolled reinforced bar |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611219967.4A CN106770327A (en) | 2016-12-26 | 2016-12-26 | A kind of quantitative detecting method of the surface corrosion area for hot-rolled reinforced bar |
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| CN106770327A true CN106770327A (en) | 2017-05-31 |
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| CN201611219967.4A Pending CN106770327A (en) | 2016-12-26 | 2016-12-26 | A kind of quantitative detecting method of the surface corrosion area for hot-rolled reinforced bar |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107941803A (en) * | 2017-11-15 | 2018-04-20 | 广西大学 | A kind of measurement device and analysis method of reinforcing bar full angle corrosion character parameter |
| CN108333101A (en) * | 2018-03-01 | 2018-07-27 | 鲁东大学 | A kind of supporting bridge rebar full length degree corrosion degree detection device |
| CN110211120A (en) * | 2019-06-04 | 2019-09-06 | 北京航天宏图信息技术股份有限公司 | The corrosion degree of historical relic determines method, apparatus and electronic equipment |
| CN111862188A (en) * | 2020-06-18 | 2020-10-30 | 唐山钢铁集团有限责任公司 | Method for quantitatively evaluating rusty area |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107941803A (en) * | 2017-11-15 | 2018-04-20 | 广西大学 | A kind of measurement device and analysis method of reinforcing bar full angle corrosion character parameter |
| CN108333101A (en) * | 2018-03-01 | 2018-07-27 | 鲁东大学 | A kind of supporting bridge rebar full length degree corrosion degree detection device |
| CN110211120A (en) * | 2019-06-04 | 2019-09-06 | 北京航天宏图信息技术股份有限公司 | The corrosion degree of historical relic determines method, apparatus and electronic equipment |
| CN111862188A (en) * | 2020-06-18 | 2020-10-30 | 唐山钢铁集团有限责任公司 | Method for quantitatively evaluating rusty area |
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Application publication date: 20170531 |