CN113779487B - Method, device, terminal and storage medium for detecting chloride ion content in mortar - Google Patents
Method, device, terminal and storage medium for detecting chloride ion content in mortar Download PDFInfo
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- CN113779487B CN113779487B CN202110929894.2A CN202110929894A CN113779487B CN 113779487 B CN113779487 B CN 113779487B CN 202110929894 A CN202110929894 A CN 202110929894A CN 113779487 B CN113779487 B CN 113779487B
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- 239000004570 mortar (masonry) Substances 0.000 title claims abstract description 414
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 title claims abstract description 152
- 238000000034 method Methods 0.000 title claims abstract description 52
- 238000003860 storage Methods 0.000 title claims abstract description 13
- 238000012360 testing method Methods 0.000 claims abstract description 208
- 238000001514 detection method Methods 0.000 claims abstract description 20
- 238000004590 computer program Methods 0.000 claims description 21
- 238000009826 distribution Methods 0.000 claims description 21
- 238000002156 mixing Methods 0.000 claims description 14
- 230000000149 penetrating effect Effects 0.000 claims description 11
- 230000003628 erosive effect Effects 0.000 claims description 10
- 238000004448 titration Methods 0.000 claims description 9
- 238000009792 diffusion process Methods 0.000 claims description 4
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 6
- 239000000243 solution Substances 0.000 description 14
- 230000006870 function Effects 0.000 description 12
- 239000000843 powder Substances 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 239000000523 sample Substances 0.000 description 5
- 238000005070 sampling Methods 0.000 description 5
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000014509 gene expression Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000005553 drilling Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000032798 delamination Effects 0.000 description 2
- 230000001066 destructive effect Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 238000004445 quantitative analysis Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 229910001961 silver nitrate Inorganic materials 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 239000012086 standard solution Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000003841 chloride salts Chemical class 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 239000012488 sample solution Substances 0.000 description 1
- 238000004901 spalling Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
- G06F17/10—Complex mathematical operations
- G06F17/11—Complex mathematical operations for solving equations, e.g. nonlinear equations, general mathematical optimization problems
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/885—Radar or analogous systems specially adapted for specific applications for ground probing
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Remote Sensing (AREA)
- Radar, Positioning & Navigation (AREA)
- Data Mining & Analysis (AREA)
- Mathematical Analysis (AREA)
- Pure & Applied Mathematics (AREA)
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Abstract
The application is suitable for the technical field of material detection, and provides a method, a device, a terminal and a storage medium for detecting the content of chloride ions in mortar, wherein the detection method comprises the following steps: acquiring direct wave amplitudes of the mortar test piece under different dry and wet cycle periods and direct wave amplitudes of the mortar to be tested; acquiring a first corresponding relation between different mortar depths and chloride ion contents of a mortar test piece under the same dry-wet cycle period; according to the first corresponding relation of the mortar test piece under different dry-wet cycle periods, determining candidate parameters of the mortar test piece under the corresponding dry-wet cycle periods; establishing a second corresponding relation between the direct wave amplitude of the mortar test piece and the candidate parameter under the same dry-wet cycle period; and determining the chloride ion content of each mortar depth in the mortar to be tested according to the direct wave amplitude of the mortar to be tested, the first corresponding relation and the second corresponding relation of the mortar test piece under different dry-wet cycle periods. The scheme realizes nondestructive detection of the chloride ion content in the mortar.
Description
Technical Field
The application belongs to the technical field of material detection, and particularly relates to a method, a device, a terminal and a storage medium for detecting the content of chloride ions in mortar.
Background
Concrete structures exposed to the ocean and ice-melting salt environment often undergo structural degradation due to erosion by chloride ions present in the ocean and ice-melting salt environment, which is often manifested as cracking, spalling and delamination of the concrete protective layer. And cracking, peeling and delamination of the concrete protective layer can cause erosion damage to the bond between the concrete and the steel bar, which in turn can cause the steel bar to be also eroded. Therefore, it is very important to detect the distribution of chloride ions in the mortar of concrete accurately in time.
Detecting the distribution of chloride ions in mortar requires detecting the content of chloride ions corresponding to the depth of any mortar in mortar. The current method for detecting the content of chloride ions in mortar comprises the following steps: the drilling sampling method, the extrusion method and the random control test (Randomized Controlled Trial, RCT) detection method are adopted to detect the content of chloride ions in mortar, and the method is required to perform broken sampling, is inconvenient to apply in actual engineering, has a detection result greatly influenced by test conditions and is not universal. Therefore, in order to solve the problem that the methods for detecting the content of chloride ions in the prior art are destructive, it is necessary to provide a nondestructive detection method for detecting the content of chloride ions corresponding to the depth of any mortar in the mortar, thereby detecting the distribution of chloride ions in the mortar.
Disclosure of Invention
The embodiment of the application provides a method, a device, a terminal and a storage medium for detecting the content of chloride ions in mortar, which realize nondestructive detection of the content of chloride ions in mortar.
The first aspect of the embodiment of the application provides a method for detecting the content of chloride ions in mortar, which comprises the following steps:
the method comprises the steps of obtaining direct wave amplitudes of a mortar test piece and direct wave amplitudes of mortar to be tested under different dry and wet cycle periods, wherein the mixing ratio of the mortar test piece is the same as that of the mortar to be tested;
aiming at different dry and wet cycle periods, acquiring first corresponding relations between different mortar depths and chloride ion contents of the mortar test piece under the same dry and wet cycle period, and acquiring first corresponding relations between the mortar test piece under different dry and wet cycle periods;
according to the first corresponding relation of the mortar test piece under different dry and wet cycle periods, determining candidate parameters of the mortar test piece under the corresponding dry and wet cycle periods, wherein the candidate parameters are parameters which form the corresponding first corresponding relation and are related to the chloride ion content of the mortar test piece;
establishing a second corresponding relation between the direct wave amplitude of the mortar test piece under the same dry-wet cycle period and the candidate parameter according to different dry-wet cycle periods to obtain a second corresponding relation of the mortar test piece under different dry-wet cycle periods;
And determining the chloride ion content of each mortar depth in the mortar to be tested according to the direct wave amplitude of the mortar to be tested, the first corresponding relation of the mortar test piece under different dry-wet cycle periods and the second corresponding relation of the mortar test piece under different dry-wet cycle periods.
A second aspect of the embodiment of the present application provides a device for detecting a chloride ion content in mortar, where the device includes:
the amplitude acquisition module is used for acquiring the direct wave amplitude of the mortar test piece and the direct wave amplitude of the mortar to be tested under different dry-wet cycle periods, and the mixing ratio of the mortar test piece is the same as that of the mortar to be tested;
the relation acquisition module is used for acquiring first corresponding relations between different mortar depths and chloride ion contents of the mortar test piece under the same dry-wet cycle period according to different dry-wet cycle periods to obtain first corresponding relations of the mortar test piece under different dry-wet cycle periods;
the parameter determining module is used for determining candidate parameters of the mortar test piece under the corresponding dry-wet cycle period according to the first corresponding relation of the mortar test piece under the different dry-wet cycle period, wherein the candidate parameters are parameters which form the corresponding first corresponding relation and are related to the chloride ion content of the mortar test piece;
The relation establishing module is used for establishing a second corresponding relation between the direct wave amplitude of the mortar test piece in the same dry-wet cycle period and the candidate parameter according to different dry-wet cycle periods to obtain a second corresponding relation of the mortar test piece in different dry-wet cycle periods;
the content determining module is used for determining the chloride ion content of each mortar depth in the mortar to be tested according to the direct wave amplitude of the mortar to be tested, the first corresponding relation of the mortar test piece under different dry-wet cycle periods and the second corresponding relation of the mortar test piece under different dry-wet cycle periods.
A third aspect of an embodiment of the present application provides a terminal device, including: the method for detecting the chloride ion content in the mortar according to the first aspect comprises a memory, a processor and a computer program stored in the memory and capable of running on the processor, wherein the processor executes the computer program.
A fourth aspect of the embodiments of the present application provides a computer readable storage medium storing a computer program, where the computer program when executed by a processor implements the method for detecting a chloride ion content in mortar according to the first aspect.
A fifth aspect of an embodiment of the present application provides a computer program product, which when run on a terminal device, causes the terminal device to execute the method for detecting a chloride ion content in mortar according to the first aspect.
Compared with the prior art, the embodiment of the application has the beneficial effects that: in the embodiment of the application, the direct wave amplitude of the mortar test piece under different dry and wet cycle periods and the direct wave amplitude of the mortar to be tested are obtained first, and the chlorine ion content in the mortar to be tested can be obtained by obtaining the related information (such as a first corresponding relation, a second corresponding relation and the like) of the mortar test piece due to the fact that the mixing ratio of the mortar test piece and the mortar to be tested is the same. And secondly, aiming at different dry and wet cycle periods, acquiring first corresponding relations between different mortar depths and chloride ion contents of the mortar test piece under the same dry and wet cycle period, obtaining the first corresponding relations between the mortar test piece under different dry and wet cycle periods, and determining candidate parameters of the mortar test piece under the corresponding dry and wet cycle periods according to the first corresponding relations between the mortar test piece under different dry and wet cycle periods. And finally, aiming at different dry-wet cycle periods, establishing a second corresponding relation between the direct wave amplitude of the mortar test piece under the same dry-wet cycle period and the candidate parameter to obtain a second corresponding relation between the mortar test piece under different dry-wet cycle periods, wherein the second corresponding relation can represent the corresponding relation between the direct wave amplitude of the mortar to be tested and the corresponding candidate parameter because the mixing ratio of the mortar test piece and the mortar to be tested is the same, so that the direct wave amplitude of the mortar to be tested, the first corresponding relation and the second corresponding relation of the mortar test piece under different dry-wet cycle periods can determine the chloride ion content of each mortar depth in the mortar to be tested under the condition of not damaging the mortar to be tested.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic flow chart of a method for detecting chloride ion content in mortar according to an embodiment of the application;
fig. 2 is a flow chart of a method for detecting chloride ion content in mortar according to a second embodiment of the application;
FIG. 3 is an exemplary graph of chloride ion distribution curves;
fig. 4 is a schematic structural diagram of a device for detecting chloride ion content in mortar according to the third embodiment of the application;
fig. 5 is a schematic structural diagram of a terminal device according to a fourth embodiment of the present application.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth such as the particular system architecture, techniques, etc., in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
It should be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It should also be understood that the term "and/or" as used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.
As used in the present description and the appended claims, the term "if" may be interpreted as "when..once" or "in response to a determination" or "in response to detection" depending on the context. Similarly, the phrase "if a determination" or "if a [ described condition or event ] is detected" may be interpreted in the context of meaning "upon determination" or "in response to determination" or "upon detection of a [ described condition or event ]" or "in response to detection of a [ described condition or event ]".
Furthermore, the terms "first," "second," "third," and the like in the description of the present specification and in the appended claims, are used for distinguishing between descriptions and not necessarily for indicating or implying a relative importance.
Reference in the specification to "one embodiment" or "some embodiments" or the like means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," and the like in the specification are not necessarily all referring to the same embodiment, but mean "one or more but not all embodiments" unless expressly specified otherwise. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless expressly specified otherwise.
It should be understood that, the sequence number of each step in this embodiment does not mean the execution sequence, and the execution sequence of each process should be determined by its function and internal logic, and should not limit the implementation process of the embodiment of the present application in any way.
In the prior art, three methods for detecting the content of chloride ions in mortar are mainly adopted: 1. drilling and sampling: firstly, drilling, sampling and grinding to obtain a mortar powder sample, fully dissolving the mortar powder sample by using water or nitric acid, filtering, diluting and the like, and then measuring the content of chloride ions in the solution by using quantitative analysis methods such as chemical titration and the like, so that the total content of free chloride ions or chlorides in the solution can be measured respectively. 2. Extrusion method: the pore solution in the mortar powder sample was pressed out using a high-pressure apparatus (a pressure of about 650MPa was applied), and then the chloride ion content in the solution was measured by quantitative analysis. 3. RCT assay: according to the relation that the potential difference generated by the chloride ion solution without any impurity is in direct proportion to the concentration of the potential difference, the content of chloride ions in the chloride ion solution is obtained, a special extraction liquid is used for extracting chloride ions in a mortar powder sample in the detection process, other anions are shielded, and in the extracted mortar powder sample solution, the potential difference is generated due to the fact that the chloride ions are easy to undergo oxidation-reduction reaction, and the concentration of the chloride ions can be obtained through the relation reverse pushing. Obviously, the three methods are destructive, the operation steps are complex and time-consuming, errors are easy to introduce, and the real-time monitoring of the mortar microenvironment is difficult to realize; in addition, the total pore solution of the sample is extruded by the extrusion method, but the chloride ion content of each depth in the mortar cannot be obtained, and the chloride ion content is more obvious particularly in a marine engineering structure; the RCT method has high accuracy, but the extraction liquid used for detection is expensive, and the detection cost is high.
The method for measuring the chloride ion content in the mortar needs to perform breaking sampling, is inconvenient for practical engineering application, has a detection result greatly influenced by test conditions, and has no universal applicability. In order to realize nondestructive detection of the chloride ion content in the mortar, the application provides a method for detecting the chloride ion content in the mortar.
In order to illustrate the technical scheme of the application, the following description is given by specific examples.
Referring to fig. 1, a flow chart of a method for detecting chloride ion content in mortar according to an embodiment of the application is shown. As shown in fig. 1, the method for detecting the chloride ion content in the mortar may include the following steps:
and step 101, obtaining the direct wave amplitude of the mortar test piece under different dry and wet cycle periods and the direct wave amplitude of the mortar to be tested.
The mixing ratio of the mortar test piece is the same as that of the mortar to be tested, wherein the same mixing ratio means that the mixing ratio of the mortar test piece to be tested, the manufacturing materials of the mortar to be tested and the materials is the same, so that the mixing ratio of the materials composing the mortar test piece in unit volume (for example, cubic centimeters) is the same as that of the materials composing the mortar to be tested.
In one possible embodiment, the mortar test piece may include five epoxy-coated surfaces and one erosion surface.
If the mortar test piece comprises five surfaces coated with epoxy resin and one erosion surface, after the mortar test piece passes through different dry and wet cycle periods, one-dimensional transmission of chloride ions in the mortar test piece under the different dry and wet cycle periods can be obtained, and accordingly one-dimensional distribution of the chloride ions in the mortar test piece can be obtained.
The ground penetrating radar is placed on the surface of the erosion surface of the mortar, electromagnetic waves are emitted to the mortar test piece by the ground penetrating radar, the returned electromagnetic waves are received, and the A scanning of chloride ions in the mortar test piece under different dry and wet cycle periods is obtained. According to the corresponding relation between the A scanning in the mortar test piece and the distribution of the chloride ions in the mortar test piece under the same dry-wet cycle period, the one-dimensional distribution of the chloride ions below the erosion surface of the mortar test piece can be obtained.
It should be understood that the position of the surface coated with the epoxy resin in the mortar test piece is not limited in the present application, and any one of the six surfaces of the mortar test piece may be used.
It should also be appreciated that the application is not limited to the dimensions of the mortar test pieces, for example, the dimensions of the mortar test pieces may be 600mm by 400mm by 120mm.
In the embodiment of the application, the direct wave amplitude of the mortar test piece under different dry and wet cycle periods can be obtained by recording the A scanning result of the mortar test piece by the ground penetrating radar, and the direct wave amplitude of the mortar to be tested can be obtained by recording the A scanning result of the mortar to be tested by the ground penetrating radar, wherein the direct wave amplitude of the mortar test piece under different dry and wet cycle periods can refer to the direct wave amplitude of the mortar test piece after the first dry and wet cycle period, the direct wave amplitude of the mortar test piece after the second dry and wet cycle period or the direct wave amplitude of the mortar test piece after the Mth dry and wet cycle period (M is an integer larger than zero), and the duration of each dry and wet cycle period is the same.
The mortar test piece is immersed in the sodium chloride solution for 24 hours, the immersed mortar test piece is taken out and aired for 24 hours, 48 hours consisting of the immersing for 24 hours and the airing for 24 hours are called a first dry-wet cycle period, if the mortar test piece after the first dry-wet cycle period is immersed in the sodium chloride solution again for 24 hours, the mortar test piece after the immersing is taken out and aired for 24 hours again, and the mortar test piece after the second dry-wet cycle period is taken out. Recording an A scanning result of the mortar test piece after the mortar test piece is subjected to a first dry-wet cycle period by a ground penetrating radar, and extracting a direct wave amplitude of the mortar test piece after the mortar test piece is subjected to the first dry-wet cycle period by the A scanning result, so that the direct wave amplitudes of the mortar test piece under different dry-wet cycle periods can be obtained; in the same way, the direct wave amplitude of the mortar to be measured can also be obtained by recording the A scanning result of the mortar to be measured through the ground penetrating radar.
In one possible embodiment, obtaining the direct wave amplitude of the mortar test piece under different dry-wet cycle periods includes:
aiming at an ith dry-wet cycle in different dry-wet cycle periods, wherein the ith dry-wet cycle period is any one of the different dry-wet cycle periods, a single signal track recorded in a bottom detection radar time domain received by a mortar test piece under the ith dry-wet cycle period is obtained;
and determining the initial maximum amplitude value in the single signal track as the direct wave amplitude of the mortar test piece in the ith dry-wet cycle period.
In the embodiment of the application, aiming at the ith dry-wet cycle period, i is the total number of the dry-wet cycle periods which is more than zero and less than or equal to the total number of the dry-wet cycle periods, a ground penetrating radar is adopted to record electromagnetic wave signals received by a mortar test piece after the ith cycle period, wherein the electromagnetic wave signals comprise direct wave signals and reflected wave signals. Because the direct wave signal is the signal received by the ground penetrating radar transmitting antenna directly to the receiving antenna, the direct wave signal has the shortest propagation time compared with the reflected wave signal. Therefore, the initial maximum amplitude value in the single signal track recorded in the time domain of the ground penetrating radar is recorded as the direct wave amplitude of the mortar test piece in the ith dry-wet cycle period.
Step 102, obtaining first corresponding relations between different mortar depths and chloride ion contents of a mortar test piece in the same dry-wet cycle period according to different dry-wet cycle periods, and obtaining first corresponding relations between the mortar test piece in different dry-wet cycle periods.
In the embodiment of the application, after the same mortar test piece is subjected to different dry-wet cycle periods, the chloride ion contents of different mortar depths in the mortar test piece are different, so that a first corresponding relation of the mortar test piece under different dry-wet cycle periods can be obtained for the different dry-wet cycle periods, the corresponding relation can represent the mapping relation of the mortar depth of the same mortar test piece under the same dry-wet cycle period and the chloride ion content under the same mortar depth, and can also represent the corresponding functional relation between the different mortar depths of the same mortar test piece under the same dry-wet cycle period and the chloride ion content.
In one possible implementation manner, for different dry-wet cycle periods, a first corresponding relationship between different mortar depths and chloride ion contents of a mortar test piece under the same dry-wet cycle period is obtained, and a first corresponding relationship between the mortar test piece under the different dry-wet cycle periods is obtained, including:
Aiming at the ith dry-wet cycle in different dry-wet cycle periods, the ith dry-wet cycle period is any one of the different dry-wet cycle periods, and a chloride ion titration method is adopted to measure the chloride ion content of the mortar test piece at different mortar depths under the ith dry-wet cycle period;
and according to the different mortar depths and the chloride ion contents of the different mortar depths of the mortar test piece in the ith dry-wet cycle period, acquiring a first corresponding relation between the different mortar depths and the chloride ion contents of the mortar test piece in the ith dry-wet cycle period, and acquiring a first corresponding relation between the mortar test piece in the ith dry-wet cycle period.
In the embodiment of the application, when chloride ion titration is adopted to measure the chloride ion content of the mortar test piece at different mortar depths under the ith dry-wet cycle period, firstly, the mortar test piece is cut into a plurality of mortar test pieces according to the preset thickness (namely, the mortar depth is expressed), each mortar test piece is drilled and powder is taken out, the taken out powder is subjected to titration treatment, so that the chloride ion content of different mortar depths is obtained, and the chloride ion content of different mortar depths can be calculated by adopting the following formula:
wherein W is Cl The chloride ion content of the test piece for mortar, Is the concentration of the silver nitrate standard solution, V 3 For the dosage of silver nitrate standard solution in titration, V 2 V for the amount of filtrate extracted at each titration 1 The distilled water consumption of the mortar immersed test piece is G, and the mass of the mortar immersed test piece is G.
By way of example, assuming that the thickness of the mortar test piece after undergoing the first dry-wet cycle is 20mm, the mortar test piece is cut into a plurality of mortar test pieces according to a preset thickness, for example, the mortar test piece is cut into 10 mortar test pieces having a thickness of 2mm, the mortar depth of each mortar test piece is obtained according to the thickness near the erosion surface, the thickness of the first mortar test piece closest to the erosion surface is 2mm, the thickness of the first mortar test piece closest to the erosion surface is 4mm, and so on, the mortar depths of 10 mortar test pieces can be obtained as 2mm, 4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, respectively, and the chloride ion content of each mortar test piece can be obtained as described above by the chloride ion titration method, whereby each mortar depth and the chloride ion content corresponding to the mortar depth can constitute one data point, and a total of 10 data points can be obtained. The first corresponding relation of the mortar test piece under the first dry-wet cycle period can be obtained by carrying out data fitting on the 10 data points.
And step 103, determining candidate parameters of the mortar test piece under the corresponding dry-wet cycle period according to the first corresponding relation of the mortar test piece under the different dry-wet cycle periods.
In the embodiment of the application, the candidate parameters refer to parameters which form a corresponding first corresponding relation and are related to the chloride ion content of the mortar test piece, in step 102, the first corresponding relation of the mortar test piece under different dry and wet cycle periods can be obtained by carrying out data fitting on a plurality of data points, in the process of carrying out fitting on the plurality of data points, a functional relation for carrying out fitting on the plurality of data points can be selected first, a plurality of undetermined coefficients in the functional relation are obtained, the plurality of data points are brought into the functional relation, and when the solved undetermined coefficients enable the difference between the functional relation and the plurality of data points to be minimum, the value of the undetermined coefficients is determined to be the candidate parameters of the mortar test piece under the corresponding dry and wet cycle periods.
After the undetermined coefficient is obtained through solving, a first corresponding relation of the mortar test piece under different dry-wet cycle periods can be obtained, and then candidate parameters are extracted from the first corresponding relation.
Illustratively, 10 data points, which can be formed by 10 mortar depths and the chloride ion content corresponding to the mortar depths, are obtained, and a functional relation for fitting the 10 data points is obtained, where the functional relation can be specifically expressed as:
Wherein C is (x,t) Is the chloride ion content at the position of x of the mortar depth; t is time; x is the depth of the mortar; c (C) 0 Is the initial chloride content, in known amounts; c (C) max Refers to the maximum chloride ion content; Δx refers to the depth of the convection zone (i.e., the depth of the mortar corresponding to the maximum chloride ion content); d (D) eff Refers to the diffusion coefficient of chloride ions.
In the above functional relation, the maximum chloride ion content C max Depth Deltax of convection zone and diffusion coefficient D of chloride ion eff And fitting 10 data points (the abscissa is the mortar depth and the ordinate is the chloride ion content) according to the functional relation, and fitting to obtain different undetermined coefficients (i.e. candidate parameters) and different functional expressions (i.e. functional relation after the undetermined coefficients are brought) for different dry and wet cycle periods. Determining the maximum chloride ion content C max Depth Deltax of convection zone and diffusion coefficient D of chloride ion eff After the three undetermined coefficients, a corresponding function expression can be determined, and the intersection point of the curve and the y axis can be obtained according to the function expression, so that the ordinate of the intersection point can be obtained to be the surface chloride ion content C s Therefore, different candidate parameters can be extracted according to different functional expressions.
And 104, establishing a second corresponding relation between the direct wave amplitude of the mortar test piece in the same dry-wet cycle period and the candidate parameter according to different dry-wet cycle periods, and obtaining a second corresponding relation between the mortar test piece in different dry-wet cycle periods.
In the embodiment of the application, the direct wave amplitude and the candidate parameter of the mortar test piece are different in different dry and wet cycle periods, and the mortar test piece has a definite corresponding relation with the direct wave amplitude and the candidate parameter in the same dry and wet cycle period, so that the mortar test piece has the only corresponding direct wave amplitude and candidate parameter in the same dry and wet cycle period. And establishing a second corresponding relation between the direct wave amplitude of the mortar test piece under the same dry-wet cycle period and the candidate parameter, and obtaining a plurality of second corresponding relations of the mortar test piece under different dry-wet cycle periods.
And 105, determining the chloride ion content of each mortar depth in the mortar to be tested according to the direct wave amplitude of the mortar to be tested, the first corresponding relation of the mortar test piece under different dry-wet cycle periods and the second corresponding relation of the mortar test piece under different dry-wet cycle periods.
In the embodiment of the application, since the mixing ratio of the mortar test piece and the mortar to be tested is the same, when the direct wave amplitudes of the mortar test piece and the mortar to be tested are the same, the mortar to be tested and the mortar test piece at the moment can be considered to correspond to the same candidate parameters. Therefore, when the direct wave amplitude of the mortar to be measured is obtained, the candidate parameters corresponding to the mortar to be measured can be obtained according to the second corresponding relation, and then the chloride ion content of each mortar depth in the mortar to be measured is determined according to the candidate parameters and the first corresponding relation.
In one possible implementation manner, determining the chloride ion content of each mortar depth in the mortar to be tested according to the direct wave amplitude of the mortar to be tested, the first corresponding relation of the mortar test piece under different dry-wet cycle periods and the second corresponding relation of the mortar test piece under different dry-wet cycle periods includes:
determining target parameters according to the second corresponding relation between the direct wave amplitude of the mortar to be tested and the mortar test piece under different dry-wet cycle periods;
determining a target corresponding relation from the first corresponding relation of the mortar test piece under different dry and wet cycle periods;
and determining the chloride ion content of each mortar depth in the mortar to be tested according to the target corresponding relation.
The target parameter refers to a candidate parameter having a corresponding relation with the direct wave amplitude of the mortar to be measured (the corresponding relation between the direct wave amplitude of the mortar to be measured and the candidate parameter is the same as the second corresponding relation), and the target corresponding relation refers to a first corresponding relation including the target parameter, that is, the target parameter is brought into the first corresponding relation to obtain the target corresponding relation.
In the embodiment of the application, the direct wave amplitude of the mortar test piece under different dry and wet cycle periods and the direct wave amplitude of the mortar to be tested are obtained first, and the distribution condition of the chloride ion content in the mortar to be tested can be obtained by obtaining the related information (such as a first corresponding relation, a second corresponding relation and the like) of the mortar test piece due to the fact that the mixing ratio of the mortar test piece and the mortar to be tested is the same. And secondly, aiming at different dry and wet cycle periods, acquiring first corresponding relations between different mortar depths and chloride ion contents of the mortar test piece under the same dry and wet cycle period, obtaining the first corresponding relations between the mortar test piece under different dry and wet cycle periods, and determining candidate parameters of the mortar test piece under the corresponding dry and wet cycle periods according to the first corresponding relations between the mortar test piece under different dry and wet cycle periods. And finally, aiming at different dry-wet cycle periods, establishing a second corresponding relation between the direct wave amplitude of the mortar test piece under the same dry-wet cycle period and the candidate parameter to obtain a second corresponding relation between the mortar test piece under different dry-wet cycle periods, wherein the second corresponding relation can represent the corresponding relation between the direct wave amplitude of the mortar to be tested and the corresponding candidate parameter because the mixing ratio of the mortar test piece and the mortar to be tested is the same, so that the direct wave amplitude of the mortar to be tested, the first corresponding relation and the second corresponding relation of the mortar test piece under different dry-wet cycle periods can determine the chloride ion content of each mortar depth in the mortar to be tested under the condition of not damaging the mortar to be tested.
Referring to fig. 2, a flow chart of a method for detecting chloride ion content in mortar according to a second embodiment of the application is shown. As shown in fig. 2, the method for detecting the chloride ion content in the mortar may include the following steps:
and step 201, obtaining the direct wave amplitude of the mortar test piece under different dry and wet cycle periods and the direct wave amplitude of the mortar to be tested.
Step 202, obtaining first corresponding relations between different mortar depths and chloride ion contents of a mortar test piece in the same dry-wet cycle period according to different dry-wet cycle periods, and obtaining first corresponding relations between the mortar test piece in different dry-wet cycle periods.
And 203, determining candidate parameters of the mortar test piece under the corresponding dry-wet cycle period according to the first corresponding relation of the mortar test piece under the different dry-wet cycle periods.
And 204, establishing a second corresponding relation between the direct wave amplitude of the mortar test piece in the same dry-wet cycle period and the candidate parameter according to different dry-wet cycle periods, and obtaining a second corresponding relation between the mortar test piece in different dry-wet cycle periods.
Step 205, determining the chloride ion content of each mortar depth in the mortar to be tested according to the direct wave amplitude of the mortar to be tested, the first corresponding relation of the mortar test piece under different dry-wet cycle periods and the second corresponding relation of the mortar test piece under different dry-wet cycle periods.
Steps 201 to 205 of this embodiment are the same as steps 101 to 105 of the previous embodiment, and can be referred to each other, and the description of this embodiment is omitted here.
And 206, determining a distribution curve formed by the chloride ion content of all the mortar depths in the mortar to be tested according to the chloride ion content of each mortar depth in the mortar to be tested and the target parameter.
In the embodiment of the application, the target parameter is a candidate parameter having a corresponding relation with the direct wave of the mortar to be tested, a functional relation for fitting the data points formed by the chloride ion content of each mortar depth in the mortar to be tested can be determined by the target parameter, in the functional relation, the independent variable is the mortar depth, the dependent variable is the chloride ion content, and according to the functional relation, a distribution curve formed by the chloride ion content of all mortar depths in the mortar to be tested can be obtained by adopting a point tracing method according to the chloride ion content of each mortar depth in the mortar to be tested.
Exemplary, as shown in FIG. 3, a chloride ion distribution curve is illustrated, wherein the abscissa represents the depth of mortar, the ordinate represents the chloride ion content, C (x, t) represents the distribution curve formed by the chloride ion content of all the mortar depths in the mortar to be tested, C s Refers to the surface chloride ion content, C max Refers to the maximum chloride ion content of the product,the area surrounded by the steel bars and the two coordinate axes in fig. 3 is the mortar to be tested, and the change of the chloride ion content in the mortar to be tested along with the depth of the mortar can be observed by the chloride ion distribution curve.
In one possible embodiment, a distribution curve of the chloride ion content of all mortar depths in the mortar to be tested is determined as a function of the target parameters.
In the embodiment of the application, the target parameters can be substituted into the corresponding fitting functions to obtain the fitting functions without unknown quantity, and the fitting functions are fitted into a distribution curve through the origin software. The fitting function is an origin custom data fitting function, and the custom data fitting function can be directly fitted into a chloride ion distribution curve through origin software.
Compared with the first embodiment, the second embodiment of the application shows the chloride ion content of all mortar depths in the mortar to be tested in a form of a distribution curve, so that the distribution condition of the chloride ions in the mortar can be detected more clearly.
Referring to fig. 4, a schematic structural diagram of a device for detecting chloride ion content in mortar according to the third embodiment of the present application is shown, and for convenience of explanation, only the portion related to the embodiment of the present application is shown.
The device for detecting the chloride ion content in the mortar specifically comprises the following modules:
the amplitude acquisition module 401 is used for acquiring the direct wave amplitude of the mortar test piece and the direct wave amplitude of the mortar to be tested under different dry-wet cycle periods, and the mixing ratio of the mortar test piece is the same as that of the mortar to be tested;
the relation acquisition module 402 is configured to acquire, for different dry and wet cycle periods, first corresponding relations between different mortar depths and chloride ion contents of a mortar test piece in the same dry and wet cycle period, so as to obtain first corresponding relations between the mortar test piece in different dry and wet cycle periods;
the parameter determining module 403 is configured to determine, according to first correspondence between the mortar test pieces under different dry-wet cycle periods, candidate parameters of the mortar test pieces under the corresponding dry-wet cycle periods, where the candidate parameters are parameters that form the corresponding first correspondence and are related to chloride ion content of the mortar test pieces;
the relation establishing module 404 is configured to establish, for different dry-wet cycle periods, a second corresponding relation between the direct wave amplitude of the mortar test piece in the same dry-wet cycle period and the candidate parameter, so as to obtain a second corresponding relation of the mortar test piece in different dry-wet cycle periods;
The content determining module 405 is configured to determine a chloride ion content of each mortar depth in the mortar to be tested according to the direct wave amplitude of the mortar to be tested, the first corresponding relationship of the mortar test piece under different dry-wet cycle periods, and the second corresponding relationship of the mortar test piece under different dry-wet cycle periods.
In the embodiment of the present application, the relationship obtaining module 402 may specifically include the following sub-modules:
the drop stator module is used for measuring the chloride ion content of the mortar test piece at different mortar depths in the ith dry-wet cycle period by adopting a chloride ion titration method according to the ith dry-wet cycle period in different dry-wet cycle periods, wherein the ith dry-wet cycle period is any one of the different dry-wet cycle periods;
and the relation correspondence sub-module is used for acquiring a first correspondence of different mortar depths and chloride ion contents of the mortar test piece in the ith dry-wet cycle period according to the different mortar depths and the chloride ion contents of the different mortar depths of the mortar test piece in the ith dry-wet cycle period, so as to acquire the first correspondence of the mortar test piece in the ith dry-wet cycle period.
In the embodiment of the present application, the content determining module 405 may specifically include the following submodules:
The target parameter determining submodule is used for determining target parameters according to the direct wave amplitude of the mortar to be detected and the second corresponding relation of the mortar test piece under different dry-wet cycle periods, wherein the target parameters are candidate parameters with corresponding relation with the direct wave amplitude of the mortar to be detected;
the target relation determining sub-module is used for determining a target corresponding relation from first corresponding relations of the mortar test piece under different dry and wet cycle periods, wherein the target corresponding relation refers to the first corresponding relation comprising target parameters;
and the content determination submodule is used for determining the chloride ion content of each mortar depth in the mortar to be tested according to the target corresponding relation.
In the embodiment of the present application, the amplitude acquisition module 401 may specifically include the following sub-modules:
the propagation time acquisition submodule is used for acquiring a single signal track recorded in the time domain of a ground penetrating radar received by a mortar test piece in an ith dry-wet cycle period of different dry-wet cycle periods according to the ith dry-wet cycle period of the different dry-wet cycle periods, wherein the ith dry-wet cycle period is any one of the different dry-wet cycle periods;
and the amplitude determining submodule is used for determining that the initial maximum amplitude value in the single signal track is the direct wave amplitude of the mortar test piece in the ith dry-wet cycle period.
In the embodiment of the application, the device for detecting the chloride ion content in the mortar can further comprise the following modules:
and the curve fitting module is used for determining a distribution curve formed by the chloride ion content of all the mortar depths in the mortar to be tested according to the chloride ion content of each mortar depth in the mortar to be tested and the target parameter.
The device for detecting the chloride ion content in the mortar provided by the embodiment of the application can be applied to the method embodiment, and details of the device refer to the description of the method embodiment and are not repeated here.
Fig. 5 is a schematic structural diagram of a terminal device according to a fourth embodiment of the present application. As shown in fig. 5, the terminal device 500 of this embodiment includes: at least one processor 510 (only one is shown in fig. 5), a memory 520 and a computer program 521 stored in the memory 520 and executable on the at least one processor 510, the processor 510 executing the computer program 521 to perform the steps of any of the above embodiments of the method for detecting chloride ion content in mortar.
The terminal device 500 may be a computing device such as a desktop computer, a notebook computer, a palm computer, a cloud server, etc. The terminal device may include, but is not limited to, a processor 510, a memory 520. It will be appreciated by those skilled in the art that fig. 5 is merely an example of a terminal device 500 and is not limiting of the terminal device 500, and may include more or fewer components than shown, or may combine certain components, or different components, such as may also include input-output devices, network access devices, etc.
The processor 510 may be a central processing unit (Central Processing Unit, CPU), the processor 510 may also be other general purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), off-the-shelf programmable gate arrays (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 520 may in some embodiments be an internal storage unit of the terminal device 500, such as a hard disk or a memory of the terminal device 500. The memory 520 may also be an external storage device of the terminal device 500 in other embodiments, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card) or the like, which are provided on the terminal device 500. Further, the memory 520 may also include both an internal storage unit and an external storage device of the terminal device 500. The memory 520 is used to store an operating system, application programs, boot Loader (Boot Loader), data, and other programs, such as program code of the computer program. The memory 520 may also be used to temporarily store data that has been output or is to be output.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of the functional units and modules is illustrated, and in practical application, the above-described functional distribution may be performed by different functional units and modules according to needs, i.e. the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-described functions. The functional units and modules in the embodiment may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit, where the integrated units may be implemented in a form of hardware or a form of a software functional unit. In addition, the specific names of the functional units and modules are only for distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working process of the units and modules in the above system may refer to the corresponding process in the foregoing method embodiment, which is not described herein again.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and in part, not described or illustrated in any particular embodiment, reference is made to the related descriptions of other embodiments.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus/terminal device and method may be implemented in other manners. For example, the apparatus/terminal device embodiments described above are merely illustrative, e.g., the division of the modules or units is merely a logical function division, and there may be additional divisions in actual implementation, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection via interfaces, devices or units, which may be in electrical, mechanical or other forms.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated modules/units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the present application may implement all or part of the flow of the method of the above embodiment, or may be implemented by a computer program to instruct related hardware, where the computer program may be stored in a computer readable storage medium, and when the computer program is executed by a processor, the computer program may implement the steps of each of the method embodiments described above. Wherein the computer program comprises computer program code which may be in source code form, object code form, executable file or some intermediate form etc. The computer readable medium may include: any entity or device capable of carrying the computer program code, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer Memory, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), an electrical carrier signal, a telecommunications signal, a software distribution medium, and so forth. It should be noted that the computer readable medium contains content that can be appropriately scaled according to the requirements of jurisdictions in which such content is subject to legislation and patent practice, such as in certain jurisdictions in which such content is subject to legislation and patent practice, the computer readable medium does not include electrical carrier signals and telecommunication signals.
The present application may also be implemented by a computer program product for implementing all or part of the steps of the above embodiments of the method, when the computer program product is run on a terminal device, for enabling the terminal device to execute the steps of the above embodiments of the method.
The above embodiments are only for illustrating the technical solution of the present application, and are not limited thereto. Although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application.
Claims (6)
1. The method for detecting the chloride ion content in the mortar is characterized by comprising the following steps of:
the method comprises the steps of obtaining direct wave amplitudes of a mortar test piece and direct wave amplitudes of mortar to be tested under different dry and wet cycle periods, wherein the mixing ratio of the mortar test piece is the same as that of the mortar to be tested;
Aiming at different dry and wet cycle periods, acquiring first corresponding relations between different mortar depths and chloride ion contents of the mortar test piece under the same dry and wet cycle period, and acquiring first corresponding relations between the mortar test piece under different dry and wet cycle periods;
according to the first corresponding relation of the mortar test piece under different dry and wet cycle periods, determining candidate parameters of the mortar test piece under the corresponding dry and wet cycle periods, wherein the candidate parameters are parameters which form the corresponding first corresponding relation and are related to the chloride ion content of the mortar test piece;
establishing a second corresponding relation between the direct wave amplitude of the mortar test piece under the same dry-wet cycle period and the candidate parameter according to different dry-wet cycle periods to obtain a second corresponding relation of the mortar test piece under different dry-wet cycle periods;
determining the chloride ion content of each mortar depth in the mortar to be tested according to the direct wave amplitude of the mortar to be tested, the first corresponding relation of the mortar test piece under different dry-wet cycle periods and the second corresponding relation of the mortar test piece under different dry-wet cycle periods;
the method for obtaining the first corresponding relation between different mortar depths and chloride ion contents of the mortar test piece in the same dry-wet cycle period according to different dry-wet cycle periods comprises the following steps:
Aiming at an ith dry-wet cycle in different dry-wet cycle periods, wherein the ith dry-wet cycle period is any one of the different dry-wet cycle periods, and a chloride ion titration method is adopted to measure the chloride ion content of the mortar test piece at different mortar depths in the ith dry-wet cycle period;
according to the different mortar depths of the mortar test piece in the ith dry-wet cycle period and the chloride ion content of the different mortar depths, a first corresponding relation between the different mortar depths of the mortar test piece in the ith dry-wet cycle period and the chloride ion content is obtained, and a first corresponding relation of the mortar test piece in the ith dry-wet cycle period is obtained;
the mortar test piece comprises five surfaces coated with epoxy resin and an erosion surface;
the candidate parameters include: surface chloride ion content, maximum chloride ion content, convection zone depth and chloride ion diffusion coefficient, wherein the convection zone depth refers to mortar depth corresponding to the maximum chloride ion content;
the determining the chloride ion content of each mortar depth in the mortar to be tested according to the direct wave amplitude of the mortar to be tested, the first corresponding relation of the mortar test piece under different dry-wet cycle periods and the second corresponding relation of the mortar test piece under different dry-wet cycle periods comprises the following steps:
Determining target parameters according to the second corresponding relation between the direct wave amplitude of the mortar to be tested and the mortar test piece under different dry and wet cycle periods, wherein the target parameters are candidate parameters with corresponding relation with the direct wave amplitude of the mortar to be tested;
determining a target corresponding relation from first corresponding relations of the mortar test piece under different dry and wet cycle periods, wherein the target corresponding relation refers to the first corresponding relation comprising the target parameter;
and determining the chloride ion content of each mortar depth in the mortar to be tested according to the target corresponding relation.
2. The method of detection of claim 1, wherein the method of detection further comprises:
and determining a distribution curve formed by the chloride ion content of all the mortar depths in the mortar to be tested according to the chloride ion content of each mortar depth in the mortar to be tested and the target parameter.
3. The method according to any one of claims 1 to 2, wherein the obtaining the direct wave amplitude of the mortar test piece at different dry-wet cycle periods comprises:
aiming at an ith dry-wet cycle period in different dry-wet cycle periods, wherein the ith dry-wet cycle period is any one of the different dry-wet cycle periods, and a single signal track recorded in a ground penetrating radar time domain and received by the mortar test piece under the ith dry-wet cycle period is obtained;
And determining the initial maximum amplitude value in the single signal track as the direct wave amplitude of the mortar test piece in the ith dry-wet cycle period.
4. A device for detecting the chloride ion content in mortar for carrying out the detection method according to any one of claims 1 to 3, characterized in that it comprises:
the amplitude acquisition module is used for acquiring the direct wave amplitude of the mortar test piece and the direct wave amplitude of the mortar to be tested under different dry-wet cycle periods, and the mixing ratio of the mortar test piece is the same as that of the mortar to be tested;
the relation acquisition module is used for acquiring first corresponding relations between different mortar depths and chloride ion contents of the mortar test piece under the same dry-wet cycle period according to different dry-wet cycle periods to obtain first corresponding relations of the mortar test piece under different dry-wet cycle periods;
the parameter determining module is used for determining candidate parameters of the mortar test piece under the corresponding dry-wet cycle period according to the first corresponding relation of the mortar test piece under the different dry-wet cycle period, wherein the candidate parameters are parameters which form the corresponding first corresponding relation and are related to the chloride ion content of the mortar test piece;
The relation establishing module is used for establishing a second corresponding relation between the direct wave amplitude of the mortar test piece in the same dry-wet cycle period and the candidate parameter according to different dry-wet cycle periods to obtain a second corresponding relation of the mortar test piece in different dry-wet cycle periods;
the content determining module is used for determining the chloride ion content of each mortar depth in the mortar to be tested according to the direct wave amplitude of the mortar to be tested, the first corresponding relation of the mortar test piece under different dry-wet cycle periods and the second corresponding relation of the mortar test piece under different dry-wet cycle periods.
5. A terminal device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor implements the method according to any of claims 1 to 3 when executing the computer program.
6. A computer readable storage medium storing a computer program, characterized in that the computer program, when executed by a processor, implements the method according to any one of claims 1 to 3.
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