CN109187324A - Underground concrete structure steel corrodes Nondestructive method - Google Patents
Underground concrete structure steel corrodes Nondestructive method Download PDFInfo
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- CN109187324A CN109187324A CN201811087275.8A CN201811087275A CN109187324A CN 109187324 A CN109187324 A CN 109187324A CN 201811087275 A CN201811087275 A CN 201811087275A CN 109187324 A CN109187324 A CN 109187324A
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
- G01N17/006—Investigating resistance of materials to the weather, to corrosion, or to light of metals
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Abstract
A kind of underground concrete structure steel corrosion Nondestructive method is disclosed, underground structure maintenance and maintenance technology field are belonged to.Comprising: around selection standard sample soil layer at least five test point；Measure Cl at least five test point‑Mass percentage, pH and O2Volumn concentration；Practical diagnosis is carried out at least five test point, obtains standard curve；Mathematical Fitting respectively obtains corrosion percentage and Cl‑Mass percentage, pH, O2Volumn concentration between first function relational expression, second function relational expression and third functional relation；Merge fitting, obtaining independent variable includes Cl‑Mass percentage, pH, O2Volumn concentration, dependent variable be corrode percentage the 4th functional relation；Measure Cl at test point to be measured‑Mass percentage, pH and O2Volumn concentration；It is substituting to the 4th functional relation, obtains the corrosion percentage at test point to be measured.The process of diagnosis is simple, as a result accurately.
Description
Technical field
The present invention relates to underground structure maintenance and maintenance technology field, become rusty more particularly to a kind of underground concrete structure steel
Lose Nondestructive method.
Background technique
Underground infrastructures are the main supporting bodies of superstructure, need to bear that superstructure transmits from heavy burden
Load, wind load, other environmental loads etc., furthermore unfavorable factors such as variation such as locating geological environment, natural environment, security performance
It is directly related to the safety of superstructure.Underground structure is concealment engineering, its is complete for the same routine testing of no image of Buddha superstructure
Whole property, for the reinforcing steel corrosion rate inside underground structure, it is even more impossible to obtain accurate data.For electric power pylon basis, this is hidden
Covering property structure, if comprehensively considering various factors, invention is easy to engineers and technicians' understanding, convenient underground structure reinforcing bar rust
Nondestructive method is lost, it is extremely urgent.
Summary of the invention
In view of this, the present invention provides a kind of underground concrete structure steel to corrode Nondestructive method, it can using it
Underground concrete structure steel to be corroded and carries out Nondestructive, the process diagnosed by the diagnostic method is simple, as a result accurately,
Thus more suitable for practical.
In order to achieve the above object, the technical side of underground concrete structure steel corrosion Nondestructive method provided by the invention
Case is as follows:
Underground concrete structure steel provided by the invention corrosion Nondestructive method the following steps are included:
At least five test point of soil layer around selection and standard underground concrete structure steel sample；
Measure around the standard underground concrete structure steel sample Cl at least five test point of soil layer-Quality percentage contain
Amount, pH and O2Volumn concentration；
Practical diagnosis is carried out at least five test point of soil layer around the standard underground concrete structure steel sample, and is obtained
To examining for corrosion percentage corresponding at least five test point of soil layer around the standard underground concrete structure steel sample
Disconnected conclusion；
It draws using the corrosion percentage as ordinate, abscissa is respectively Cl-Mass percentage, pH and O2Volume hundred
Divide 3 standard curves of content；
Mathematical Fitting is carried out respectively for 3 standard curves, respectively obtains the corrosion percentage and Cl-Quality percentage
First function relational expression, the corrosion percentage between content and second function relational expression and the corrosion percentage between pH
Several and O2Volumn concentration between third functional relation；
By the corrosion percentage and Cl-Mass percentage between first function relational expression, the corrosion percentage with
Second function relational expression and the corrosion percentage and O between pH2Volumn concentration between third functional relation
Fitting is merged, obtaining independent variable includes Cl-Mass percentage, pH, O2Volumn concentration, dependent variable be corrosion
4th functional relation of percentage；
The test point to be measured of soil layer around underground concrete structure steel to be measured is chosen, Cl at the test point to be measured is measured-Matter
Measure percentage composition, pH and O2Volumn concentration；
By Cl at the obtained test point to be measured-Mass percentage, pH and O2Volumn concentration be substituting to it is described
The corrosion percentage at the test point to be measured is obtained by calculation in 4th functional relation.
Following technical measures also can be used into one in underground concrete structure steel corrosion Nondestructive method provided by the invention
Step is realized.
Preferably, at least five test point is selected from soil layer around the same standard underground concrete structure steel sample.
Preferably, at least five test point is selected from soil layer around different standard underground concrete structure steel samples.
Preferably, the standard underground concrete structure steel sample is arranged 1 month at least in soil.
Preferably, at least five test point for soil layer around the standard underground concrete structure steel sample carries out
The method actually diagnosed is to take out the standard underground concrete structure steel sample or the excavation standard buried concrete knot
Soil layer around structure steel sample makes the standard underground concrete structure steel sample exposure.
Preferably, the depth of at least five test point is different.
Preferably, measuring around the standard underground concrete structure steel sample Cl at least five test point of soil layer-
Mass percentage, pH and O2Volumn concentration method the following steps are included:
Around the standard underground concrete structure steel sample soil layer excavate hole, until described hole depth and it is described extremely
The depth of few 5 test points is adapted；
It will be used to measure Cl respectively-Mass percentage the first detecting instrument probe, the second detector for measuring pH
Device is popped one's head in, for measuring O2Volumn concentration third detecting instrument probe placement in described hole；
The soil dug out when backfill excavation described hole makes described for measuring Cl-Mass percentage the first detecting instrument
Probe, the second detecting instrument for measuring pH are popped one's head in, for measuring O2Volumn concentration third detecting instrument probe
Stablize；
After undergoing a delay period, read respectively described for measuring Cl-Mass percentage the first detecting instrument, use
In the second detecting instrument of measurement pH, for measuring O2Volumn concentration third detecting instrument reading obtain it is described
Cl at least five test point of soil layer around standard underground concrete structure steel sample-Mass percentage, pH and O2Body
Product percentage composition value.
Preferably, described for measuring Cl-Mass percentage the first detecting instrument, second for measuring pH
Detecting instrument, for measuring O2Volumn concentration third detecting instrument on be respectively equipped with drawstring.
Preferably, the setting position of the standard underground concrete structure steel sample and the buried concrete knot to be measured
The distance between setting position of structure steel is no more than 100m.
Preferably, the underground concrete structure steel corrosion Nondestructive method is further comprising the steps of,
For the test point to be measured, it is spaced setting time and repeatedly measures the Cl-Mass percentage, pH and O2Volume
Percentage composition；
The obtained Cl will repeatedly be measured-Mass percentage, pH and O2Volumn concentration be substituting to respectively it is described
The corrosion percentage at the test point to be measured is obtained by calculation in 4th functional relation；
Drawing ordinate is the corrosion percentage at the test point to be measured, abscissa be the curve of time to get to it is described to
The relation curve that the corrosion percentage surveyed at test point changes over time.
The present invention detects the rust at test point to be measured after drawing standard curve in the standard curve by way of described point
Percentage is lost, as long as Specification Curve of Increasing is completed, the Cl at test point to be measured can be obtained respectively using detecting instrument-Quality
Percentage composition, pH and O2Volumn concentration obtain the corrosion percentage at test point to be measured, it can be readily appreciated that measurement process is simple
It is single, and measurement result is accurate.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field
Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as to the present invention
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings:
Fig. 1 is the step flow chart that underground concrete structure steel provided in an embodiment of the present invention corrodes Nondestructive method.
Specific embodiment
The present invention in order to solve the problems existing in the prior art, provides a kind of underground concrete structure steel corrosion Nondestructive side
Method can corrode underground concrete structure steel using it and carry out Nondestructive, the process diagnosed by the diagnostic method
Simply, as a result accurately, thus more suitable for practical.
It is of the invention to reach the technical means and efficacy that predetermined goal of the invention is taken further to illustrate, below in conjunction with
Attached drawing and preferred embodiment corrode Nondestructive method to underground concrete structure steel proposed according to the present invention, specific real
Mode, structure, feature and its effect are applied, detailed description is as follows.In the following description, different " embodiment " or " embodiment "
What is referred to is not necessarily the same embodiment.In addition, the feature, structure or feature in one or more embodiments can be by any suitable shapes
Formula combination.
The terms "and/or", only a kind of incidence relation for describing affiliated partner, indicates that there may be three kinds of passes
System, it is specific to understand for example, A and/or B are as follows: it can simultaneously include A and B, can be with individualism A, it can also be with individualism
B can have above-mentioned three kinds of any case.
Referring to attached drawing 1, underground concrete structure steel corrosion Nondestructive method provided in an embodiment of the present invention includes following
Step:
Step S1: at least five test point of soil layer around selection and standard underground concrete structure steel sample；
Step S2: Cl at least five test point of soil layer around measurement standard underground concrete structure steel sample-Quality percentage
Content, pH and O2Volumn concentration；
Step S3: carrying out practical diagnosis at least five test point of soil layer around standard underground concrete structure steel sample, and
Obtain the diagnosis of corrosion percentage corresponding at least five test point of soil layer around standard underground concrete structure steel sample
Conclusion；
Step S4: it draws to corrode percentage as ordinate, abscissa is respectively Cl-Mass percentage, pH and O2Body
3 standard curves of product percentage composition；
Step S5: carrying out Mathematical Fitting for 3 standard curves respectively, respectively obtains corrosion percentage and Cl-Quality percentage
First function relational expression, corrosion percentage between content and the second function relational expression between pH and corrosion percentage and O2's
Third functional relation between volumn concentration；
Step S6: by corrosion percentage and Cl-Mass percentage between first function relational expression, corrosion percentage and pH
Between second function relational expression and corrosion percentage and O2Volumn concentration between third functional relation closed
And be fitted, obtaining independent variable includes Cl-Mass percentage, pH, O2Volumn concentration, dependent variable be corrosion percentage
The 4th functional relation；
Step S7: the test point to be measured of soil layer around underground concrete structure steel to be measured is chosen, Cl at test point to be measured is measured-'s
Mass percentage, pH and O2Volumn concentration；
Step S8: by Cl at obtained test point to be measured-Mass percentage, pH and O2Volumn concentration be substituting to
The corrosion percentage at test point to be measured is obtained by calculation in four functional relations.
The embodiment of the present invention detects test point to be measured after drawing standard curve in the standard curve by way of described point
The corrosion percentage at place can obtain respectively the Cl at test point to be measured using detecting instrument as long as Specification Curve of Increasing is completed-
Mass percentage, pH and O2Volumn concentration obtain the corrosion percentage at test point to be measured, it can be readily appreciated that measurement
Process is simple, and measurement result is accurate.
Wherein, at least five test point is selected from soil layer around the same standard underground concrete structure steel sample.In this feelings
Under condition, it can be demarcated for the same standard underground concrete structure steel sample, the accuracy of calibration is higher.
Wherein, at least five test point is selected from soil layer around different standard underground concrete structure steel samples.In this feelings
Under condition, it can be demarcated for different standard underground concrete structure steel samples, it is calibrated by this scaling method
The scope of application is wider, and in the present embodiment, the distance between different standard underground concrete structure steel sample is no more than 100m,
In this case, it can be avoided due to soil property, environmental change and bring error.
Wherein, standard underground concrete structure steel sample is arranged 1 month at least in soil.In this case, can make
It obtains standard underground concrete structure steel sample and possesses the enough corrosion time, to reach corresponding corrosion percentage, so that mark
Fixed corrosion percentage to be related to data area wider.
Wherein, practical diagnosis is carried out at least five test point of soil layer around standard underground concrete structure steel sample
Method be taking-up standard underground concrete structure steel sample or excavate standard underground concrete structure steel sample around soil layer,
Make standard underground concrete structure steel sample exposure.Wherein, the mode for taking out standard underground concrete structure steel sample is suitable for
The lesser situation of weight and volume of standard underground concrete structure steel sample, and excavate standard underground concrete structure steel sample
Surrounding soil layer makes the mode of standard underground concrete structure steel sample exposure be suitable for standard underground concrete structure steel sample
Weight and volume larger situation in practice, can be selected according to the actual situation.
Wherein, the depth of at least five test point is different.In this case, the depth bounds of test point are enabled to more
Extensively.
Wherein, measure standard underground concrete structure steel sample around soil layer at least five test point at Cl-Quality hundred
Divide content, pH and O2Volumn concentration method the following steps are included:
Step S201: soil layer excavates hole around standard underground concrete structure steel sample, until the depth and at least 5 of hole
The depth of a test point is adapted；
Step S202: it will be used to measure Cl respectively-Mass percentage the first detecting instrument probe, for measuring pH
Two detecting instruments are popped one's head in, for measuring O2Volumn concentration third detecting instrument probe placement in hole；
Step S203: backfill is excavated the soil dug out when hole and is made for measuring Cl-Mass percentage the first detector
Device probe, the second detecting instrument for measuring pH are popped one's head in, for measuring O2Volumn concentration third detecting instrument visit
Head is stablized；
Step S204: it after one delay period of experience, is read respectively for measuring Cl-Mass percentage the first detector
Device, the second detecting instrument for measuring pH, for measuring O2Volumn concentration third detecting instrument reading to obtain the final product
Cl at least five test point of soil layer around to standard underground concrete structure steel sample-Mass percentage, pH and O2's
Volumn concentration value.
In this case, Cl at least five test point obtained can be made-Mass percentage, pH and O2Volume
The result of percentage composition is more accurate and stablizes.
Wherein, for measuring Cl-Mass percentage the first detecting instrument, the second detector for measuring pH
Device, for measuring O2Volumn concentration third detecting instrument on be respectively equipped with drawstring.In this case, can be convenient for
It will be used to measure Cl-The first detecting instrument of mass percentage, the second detecting instrument for measuring pH, for measuring O2
The third detecting instrument of volumn concentration taken out from soil layer, as long as it can be taken out respectively by pulling drawstring.
Wherein, the setting position of the setting position and underground concrete structure steel to be measured of standard underground concrete structure steel sample
It the distance between sets and to be no more than 100m.In this case, it can be avoided due to soil property, environmental change and bring error.
Wherein, underground concrete structure steel corrosion Nondestructive method is further comprising the steps of,
Step S9: being directed to test point to be measured, and interval setting time repeatedly measures Cl-Mass percentage, pH and O2Volume
Percentage composition；
Step S10: obtained Cl will repeatedly be measured-Mass percentage, pH and O2Volumn concentration be substituting to respectively
The corrosion percentage at test point to be measured is obtained by calculation in 4th functional relation；
Step S11: draw ordinate be test point to be measured at corrosion percentage, abscissa be the time curve to get to
The relation curve that the corrosion percentage surveyed at test point changes over time.
In this case, it can be predicted by the relation curve that the corrosion percentage at test point to be measured changes over time
The variation tendency of the corrosion percentage of underground concrete structure steel, once the inflection point fluctuation that the curve occurs is larger, then prompt pair
The underground concrete structure steel is safeguarded or is replaced, and can be avoided the generation of related accidents.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (10)
1. a kind of underground concrete structure steel corrodes Nondestructive method, which comprises the following steps:
At least five test point of soil layer around selection and standard underground concrete structure steel sample；
Measure around the standard underground concrete structure steel sample Cl at least five test point of soil layer-Quality percentage contain
Amount, pH and O2Volumn concentration；
Practical diagnosis is carried out at least five test point of soil layer around the standard underground concrete structure steel sample, and is obtained
To examining for corrosion percentage corresponding at least five test point of soil layer around the standard underground concrete structure steel sample
Disconnected conclusion；
It draws using the corrosion percentage as ordinate, abscissa is respectively Cl-Mass percentage, pH and O2Volume hundred
Divide 3 standard curves of content；
Mathematical Fitting is carried out respectively for 3 standard curves, respectively obtains the corrosion percentage and Cl-Quality percentage
First function relational expression, the corrosion percentage between content and second function relational expression and the corrosion percentage between pH
Several and O2Volumn concentration between third functional relation；
By the corrosion percentage and Cl-Mass percentage between first function relational expression, the corrosion percentage and pH
Between second function relational expression and the corrosion percentage and O2Volumn concentration between third functional relation into
Row merges fitting, and obtaining independent variable includes Cl-Mass percentage, pH, O2Volumn concentration, dependent variable be corrosion hundred
4th functional relation of score；
The test point to be measured of soil layer around underground concrete structure steel to be measured is chosen, Cl at the test point to be measured is measured-Quality
Percentage composition, pH and O2Volumn concentration；
By Cl at the obtained test point to be measured-Mass percentage, pH and O2Volumn concentration be substituting to described
The corrosion percentage at the test point to be measured is obtained by calculation in four functional relations.
2. underground concrete structure steel according to claim 1 corrodes Nondestructive method, which is characterized in that it is described at least
5 test points are selected from soil layer around the same standard underground concrete structure steel sample.
3. underground concrete structure steel according to claim 1 corrodes Nondestructive method, which is characterized in that it is described at least
5 test points are selected from soil layer around different standard underground concrete structure steel samples.
4. underground concrete structure steel according to claim 1 corrodes Nondestructive method, which is characterized in that the standard
Underground concrete structure steel sample is arranged 1 month at least in soil.
5. underground concrete structure steel according to claim 1 corrodes Nondestructive method, which is characterized in that for described
The practical method diagnosed of at least five test point of soil layer is to take out the mark around standard underground concrete structure steel sample
Quasi- underground concrete structure steel sample excavates soil layer around the standard underground concrete structure steel sample, makes the standard
Underground concrete structure steel sample exposure.
6. underground concrete structure steel according to claim 1 corrodes Nondestructive method, which is characterized in that it is described at least
The depth of 5 test points is different.
7. underground concrete structure steel according to claim 1 corrodes Nondestructive method, which is characterized in that described in measurement
Cl at least five test point of soil layer around standard underground concrete structure steel sample-Mass percentage, pH and O2Body
Product percentage composition method the following steps are included:
Around the standard underground concrete structure steel sample soil layer excavate hole, until described hole depth and it is described extremely
The depth of few 5 test points is adapted；
It will be used to measure Cl respectively-Mass percentage the first detecting instrument probe, the second detecting instrument for measuring pH
It pops one's head in, for measuring O2Volumn concentration third detecting instrument probe placement in described hole；
The soil dug out when backfill excavation described hole makes described for measuring Cl-Mass percentage the first detecting instrument
Probe, the second detecting instrument for measuring pH are popped one's head in, for measuring O2Volumn concentration third detecting instrument probe
Stablize；
After undergoing a delay period, read respectively described for measuring Cl-Mass percentage the first detecting instrument, use
In the second detecting instrument of measurement pH, for measuring O2Volumn concentration third detecting instrument reading obtain it is described
Cl at least five test point of soil layer around standard underground concrete structure steel sample-Mass percentage, pH and O2Body
Product percentage composition value.
8. underground concrete structure steel according to claim 7 corrodes Nondestructive method, which is characterized in that described to be used for
Measure Cl-The first detecting instrument of mass percentage, the second detecting instrument for measuring pH, for measuring O2Volume
Drawstring is respectively equipped on the third detecting instrument of percentage composition.
9. underground concrete structure steel according to claim 1 corrodes Nondestructive method, which is characterized in that the standard
The distance between the setting position of the setting position and the underground concrete structure steel to be measured of underground concrete structure steel sample
No more than 100m.
10. underground concrete structure steel according to claim 1 corrodes Nondestructive method, which is characterized in that describedly
Lower concrete structure steel corrosion Nondestructive method is further comprising the steps of,
For the test point to be measured, it is spaced setting time and repeatedly measures the Cl-Mass percentage, pH and O2Volume
Percentage composition；
The obtained Cl will repeatedly be measured-Mass percentage, pH and O2Volumn concentration be substituting to described respectively
The corrosion percentage at the test point to be measured is obtained by calculation in four functional relations；
Drawing ordinate is the corrosion percentage at the test point to be measured, abscissa be the curve of time to get to it is described to
The relation curve that the corrosion percentage surveyed at test point changes over time.
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| CN109187324B (en) | 2019-12-06 |
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