A method for detecting concrete impermeability

Abstract

The invention relates to the technical field of building material detection, and specifically discloses a concrete anti-permeability detection method. By preparing concrete specimens of standard size and combining pretreatment, permeability test and anti-permeability evaluation methods, the water penetration resistance of concrete under different conditions is systematically analyzed; concrete specimens of 150mm×150mm×150mm are prepared, and the permeability performance of each specimen is comprehensively evaluated by measuring the permeability coefficient and the penetration depth; on this basis, a permeability coefficient factor and a penetration depth factor are introduced, and an anti-permeability performance score is obtained through statistical analysis to determine whether the anti-permeability performance of the concrete specimen is normal; further, the anti-permeability performance under different temperature conditions is evaluated, and it is found that abnormal anti-permeability performance may exist under a specific temperature sub-range; and the anti-permeability performance of the concrete specimen is optimized by adjusting the batching ratio of concrete.

Description

Technical Field

[0001] The invention relates to the technical field of building material detection, and in particular to a concrete anti-seepage detection method. Background Art

[0002] In the construction industry, concrete is a widely used basic material, and its impermeability is crucial to ensure the safety and durability of buildings. At present, the methods for evaluating the impermeability of concrete mainly rely on traditional water pressure tests and empirical judgments, but these methods have certain limitations, such as the difficulty in controlling consistent test conditions and the strong subjectivity of evaluation standards. In addition, traditional methods can often only provide results for a single indicator and cannot fully reflect the impermeability of concrete.

[0003] The invention improves the problems existing in the above-mentioned prior art and proposes the following advantages: by comprehensively evaluating the anti-seepage performance of concrete and introducing the concepts of permeability coefficient factor and penetration depth factor, the present invention not only takes into account the permeability coefficient as an indicator, but also comprehensively considers the influence of penetration depth, and can more comprehensively evaluate the anti-seepage performance of concrete; through quantitative processing of permeability coefficient and penetration depth, the present invention can provide a more accurate anti-seepage performance score and more comprehensively reflect the anti-seepage performance of concrete under different conditions. Summary of the invention

[0004] By preparing a standard concrete specimen with a size of 150mm×150mm×150mm, the permeability coefficient K is calculated by Darcy's law, which involves parameters such as fluid viscosity, volume flow rate, porous material thickness, total cross-sectional area of ​​fluid passing through porous materials, pressure difference, etc., and the penetration depth H is obtained by measuring the deepest depth of the water mark; the permeability coefficient factor Wa and the penetration depth factor Wb are obtained, and the anti-permeability performance score Q is obtained through comprehensive analysis. The permeability coefficient factor Wa is obtained by calculating the permeability coefficient jump ratio J, and the penetration depth factor Wb is obtained by calculating the penetration depth jump ratio M. The anti-permeability performance score Q is obtained by the weighted average of the permeability coefficient factor Wa and the penetration depth factor Wb; different temperature ranges that may appear in the concrete specimen are preset, and are distributed into multiple temperature sub-ranges in equal proportion; the anti-permeability performance of the concrete specimens is tested in different temperature sub-ranges, and the batching ratio of the concrete specimens is adjusted according to the test results to optimize the anti-permeability performance.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A method for detecting concrete impermeability comprises the following steps:

[0007] S1: Prepare concrete specimens of standard size and perform pretreatment;

[0008] S2: Obtain the permeability parameters of each concrete specimen by calculation and measurement, wherein the permeability parameters include permeability coefficient and permeability depth;

[0009] S3: Processing the permeability coefficient and penetration depth of the concrete specimen to obtain a permeability coefficient factor and a penetration depth factor, comprehensively processing the permeability coefficient factor and the penetration depth factor to obtain a permeability performance score, and comparing it with the permeability performance score threshold to determine whether the permeability performance of the prepared concrete specimen sample group is normal;

[0010] S4: Based on the judgment of the impermeability performance, the prepared concrete specimens are tested for impermeability performance under different environmental conditions.

[0011] As a further solution of the present invention: preparing concrete specimens according to GB / T50081 standard;

[0012] The permeability parameters of each concrete specimen are obtained, wherein the permeability parameters include permeability coefficient and permeability depth.

[0013] As a further solution of the present invention: the process of obtaining the permeability coefficient is:

[0014] The permeability coefficient Ki of the concrete specimen is calculated;

[0015] The process of obtaining the penetration depth is:

[0016] Use a vernier caliper or microscope to measure the deepest depth of the water mark, which is the penetration depth of the concrete specimen and is recorded as Hi.

[0017] As a further solution of the present invention: during the monitoring period, the permeability coefficient Ki and the penetration depth Hi of multiple concrete specimens are collected respectively;

[0018] The permeability coefficient Ki of multiple concrete specimens was processed to obtain the permeability coefficient factor Wa;

[0019] The penetration depth Hi of multiple concrete specimens is processed to obtain the penetration depth factor Wb.

[0020] As a further solution of the present invention: the process of obtaining the permeability coefficient factor Wa is:

[0021] The permeability coefficients ki of multiple concrete specimens are integrated to obtain a permeability coefficient group;

[0022] The fluctuation ratio Wk of the permeability coefficient group is calculated;

[0023] The permeability coefficient jump ratio J is calculated;

[0024] The permeability coefficient factor Wa is calculated.

[0025] As a further solution of the present invention: the process of obtaining the penetration depth factor Wb is:

[0026] The penetration depths Hi of multiple concrete specimens are integrated to obtain a penetration depth group;

[0027] Get the standard deviation α of the penetration depth group;

[0028] The coefficient of variation CV of penetration depth was calculated;

[0029] The penetration depth jump ratio M is calculated;

[0030] The penetration depth factor Wb is calculated.

[0031] As a further solution of the present invention: the permeability coefficient factor Wa of the concrete specimen and the penetration depth factor Wb of the concrete specimen are processed to obtain an anti-permeability performance score Q;

[0032] and comparing the anti-seepage performance score Q with a preset anti-seepage performance score threshold;

[0033] If the anti-permeability performance score Q is greater than or equal to the preset anti-permeability performance score threshold, it means that the anti-permeability performance of the concrete specimen is normal;

[0034] If the anti-permeability performance score Q is less than the preset anti-permeability performance score threshold, it means that the anti-permeability performance of the concrete specimen is abnormal.

[0035] As a further solution of the present invention: the anti-permeability performance score Q is obtained by weighting the permeability coefficient factor Wa of the concrete specimen and the penetration depth factor Wb of the concrete specimen.

[0036] As a further solution of the present invention: presetting a temperature range that may occur in a concrete specimen under actual conditions, and dividing the temperature range into s temperature sub-ranges in equal proportion;

[0037] The anti-permeability performance score of each temperature sub-interval is obtained respectively, and compared with the permeability performance score threshold to obtain the abnormal temperature sub-interval.

[0038] As a further solution of the present invention: for the temperature range in which the anti-permeability performance of the concrete specimen is abnormal, the batching ratio of the concrete specimen is adjusted, and the anti-permeability performance monitoring method is repeated.

[0039] Beneficial effects of the present invention:

[0040] (1) The present invention uses a scientific method to calculate the permeability coefficient factor Wa and the permeability depth factor Wb by comprehensively analyzing the two key parameters of permeability coefficient and permeability depth, and then obtains the permeability performance score Q. This method can more comprehensively and accurately evaluate the anti-permeability performance of concrete, help optimize the concrete formula, and improve its reliability and durability in practical applications.

[0041] (2) By comparing the permeability score Q with the preset anti-permeability score threshold, it is possible to quickly determine whether the anti-permeability performance of the concrete specimen is normal. This not only helps to screen the best concrete formula before construction, but also guides engineers to select concrete materials and optimize structural design according to specific project requirements, thereby reducing subsequent maintenance costs and extending the service life of the building;

[0042] (3) The impermeability test under different temperature sub-ranges mentioned in the embodiment can help determine the performance of concrete under specific environmental conditions. This testing method can identify the concrete formula suitable for specific environmental conditions, ensure that the concrete can maintain good impermeability under various climate and temperature conditions, and improve the application scope of concrete and the overall quality of the project. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The present invention will be further described below in conjunction with the accompanying drawings.

[0044] Figure 1 It is a structural schematic diagram of a concrete anti-seepage detection method of the present invention;

[0045] Figure 2 It is a schematic diagram of a structure for obtaining a permeability performance score of a concrete permeability detection method in the present invention;

[0046] Figure 3 It is a structural schematic diagram of a concrete impermeability detection method of the present invention for judging abnormal conditions of concrete samples at different temperatures;

[0047] Figure 4 It is a system block diagram of a concrete anti-seepage detection method provided by the present invention;

[0048] Figure 5 It is a system block diagram of a storage medium of a concrete anti-seepage detection method provided by the present invention. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] Example 1

[0051] See also Figure 1 As shown, the present invention is a method for detecting concrete impermeability, comprising the following steps:

[0052] S1: Prepare concrete specimens of standard size and perform pretreatment;

[0053] S2: Obtain the permeability parameters of each concrete specimen by calculation and measurement, wherein the permeability parameters include permeability coefficient and permeability depth;

[0054] S3: Processing the permeability coefficient and the penetration depth of the concrete specimen to obtain a permeability coefficient factor and a penetration depth factor, processing the permeability coefficient factor and the penetration depth factor to obtain a permeability performance score, and comparing them with the permeability performance score threshold to determine whether the permeability performance of the prepared concrete specimen sample group is normal;

[0055] S4: Based on the judgment of the impermeability performance, the prepared concrete specimens are tested for impermeability performance under different environmental conditions.

[0056] Example 2

[0057] On the basis of Example 1, a concrete specimen with a size of 150 mm×150 mm×150 mm was prepared in accordance with GB / T 50081 standard;

[0058] Place the specimens in a curing room and perform standard curing for 28 days at a temperature of (20±2)℃ and a humidity of at least 95% to ensure that the specimens reach the designed strength;

[0059] After curing, the specimens were dried at 105 °C to a constant mass to remove internal moisture;

[0060] The four sides of the specimen were sealed with epoxy resin, leaving only two opposite sides for water penetration testing to ensure unidirectional water penetration during the test.

[0061] Place the pre-treated specimen in the test and sealing system to ensure good sealing.

[0062] During one monitoring cycle, several concrete specimens were obtained, and the water pressure was gradually increased from 0 MPa to 1.2 MPa using a pressurization system, and the changes in water pressure were monitored and recorded.

[0063] It should be noted that the monitoring period is 12 hours, the ambient temperature is maintained at (20±2)°C, and the humidity is 95%.

[0064] Obtaining the permeability parameters of each concrete specimen, wherein the permeability parameters include permeability coefficient and permeability depth;

[0065] The process of obtaining the permeability coefficient K is as follows: The concrete water permeability test uses concrete as a porous solid material to evaluate the concrete's water permeability resistance. By measuring the flow rate and flow velocity of water in the concrete in a unidirectional sufficiently slow steady-state flow process, the flow velocity and flow rate of the pressure liquid flowing through the concrete are first tested, and the permeability coefficient Ki is calculated according to Darcy's law;

[0066] By formula The permeability coefficient K i is calculated, i is the number of concrete specimens, i = 1, 2, 3, ..., m;

[0067] Wherein, μ is the preset fluid viscosity, Q is the fluid volume flow rate, L is the preset porous material thickness, A is the total cross-sectional area of ​​the fluid passing through the porous material, and ΔP is the pressure difference;

[0068] It should be noted that in the concrete water penetration test, the fluid refers to the liquid used to test the concrete's resistance to water penetration, which here refers to water.

[0069] The process of obtaining the penetration depth Hi is as follows: at the end of the test, cut or break the specimen from the penetration surface and observe the traces of water penetration; use a vernier caliper or a microscope to measure the deepest depth of the water trace, which is the penetration depth Hi.

[0070] It should be noted that: the smaller the permeability coefficient, the greater the concrete's resistance to water penetration, and the better the anti-permeability performance. This is because a smaller Ki value means that it is more difficult for water molecules to move inside the concrete, and a larger pressure difference is required to push the same volume of water over the same distance; the smaller the penetration depth, the better the concrete's anti-permeability performance. This is because a small penetration depth means that it is difficult for water molecules to penetrate into the concrete, which can reduce potential damage to concrete structures caused by water, such as steel corrosion, freeze-thaw damage, etc.

[0071] Example 3

[0072] See also Figure 2 As shown, based on Example 2, since the anti-permeability performance of the concrete specimen is affected by the permeability coefficient factor Wa and the penetration depth factor Wb, the permeability coefficient factor and the penetration depth factor are obtained respectively, and a comprehensive analysis is performed;

[0073] During the monitoring period, the permeability parameters of i concrete specimens are collected, where i ≥ 1;

[0074] The process of obtaining the permeability coefficient Wa is:

[0075] Obtain the permeability coefficient ki of each concrete specimen;

[0076] The permeability coefficients ki of i concrete specimens are integrated to obtain a permeability coefficient group;

[0077] The average permeability coefficient Ky within the permeability coefficient group is calculated according to the mean calculation formula;

[0078] Get the maximum permeability coefficient Kmax in the permeability coefficient group;

[0079] Get the minimum permeability coefficient Kmin in the permeability coefficient group;

[0080] By formula The fluctuation ratio Wk of the permeability coefficient group is calculated;

[0081] By formula The permeability coefficient jump ratio J is calculated;

[0082] Wherein, b1 and b2 are both preset proportional factors, and b1 and b2 are both greater than 0;

[0083] The permeability coefficient jump ratio J of the concrete specimen and the permeability coefficient ki of the concrete specimen are processed to obtain the permeability coefficient factor Wa;

[0084] By formula The permeability factor Wa is calculated;

[0085] The process of obtaining the penetration depth factor Wb is:

[0086] Obtain the penetration depth Hi of each concrete specimen;

[0087] The penetration depths H i of i concrete specimens are integrated to obtain a penetration depth group;

[0088] The average value Hy of the penetration depth group is obtained by the mean calculation formula;

[0089] By formula Get the standard deviation α of the penetration depth group;

[0090] By formula The coefficient of variation CV of penetration depth was calculated;

[0091] By formula The penetration depth jump ratio M is calculated;

[0092] Wherein, b3 and b4 are both preset proportional factors, and b3 and b4 are both greater than 0;

[0093] The penetration depth jump ratio M of the concrete specimen and the penetration depth Hi of the concrete specimen are processed to obtain the penetration depth factor Wb;

[0094] By formula The penetration depth factor Wb is calculated.

[0095] Processing the permeability coefficient factor Wa of the concrete specimen and the penetration depth factor Wb of the concrete specimen;

[0096] The anti-seepage performance score Q is calculated by the formula Q = W1*Wa+W2*Wb;

[0097] Among them, the weight of the permeability coefficient factor Wa is assigned to W1, and the weight of the penetration depth factor Wb is assigned to W2;

[0098] Comparing the anti-seepage performance score Q with a preset anti-seepage performance score threshold;

[0099] If the anti-permeability performance score Q is greater than or equal to the preset anti-permeability performance score threshold, it means that the anti-permeability performance of the concrete specimen is normal;

[0100] If the anti-permeability performance score Q is less than the preset anti-permeability performance score threshold, it means that the anti-permeability performance of the concrete specimen is abnormal;

[0101] It should be noted that the anti-permeability score Q reflects the overall water penetration resistance of the concrete specimen. The larger the anti-permeability score Q, the stronger the anti-permeability performance of the concrete specimen, which can reduce the potential damage of water to the concrete structure, such as steel corrosion and freeze-thaw damage.

[0102] Example 4

[0103] See also Figure 3 As shown, on the basis of Example 3, since the size of the concrete specimen anti-permeability performance score determines the concrete specimen anti-permeability performance, the concrete specimen is placed in different temperature environments to judge the concrete specimen anti-permeability performance.

[0104] Preset the possible temperature range of the concrete specimen under actual conditions, and divide the temperature range into s temperature sub-ranges in equal proportion;

[0105] Among them, s≥1;

[0106] The concrete specimens were placed in different temperature sub-intervals for testing;

[0107] Obtain m concrete specimens prepared under the same conditions and evenly distribute them to each temperature sub-interval;

[0108] Where m is an integer multiple of s and m≥2;

[0109] After a monitoring cycle, the permeability coefficient and penetration depth of the concrete specimens in each temperature sub-interval are collected;

[0110] The permeability coefficient factor and penetration depth factor of the concrete specimen in each temperature sub-interval are obtained by calculation;

[0111] The permeability coefficient factor and penetration depth factor of the concrete specimens in each temperature sub-interval are processed to obtain the anti-permeability performance score of each temperature sub-interval;

[0112] The anti-permeability performance score of each temperature sub-interval is compared with the anti-permeability performance score threshold. If the anti-permeability performance score is less than the anti-permeability performance score threshold, it means that the anti-permeability performance of the concrete specimen in this temperature sub-interval is abnormal.

[0113] For the temperature range where the anti-permeability performance of the concrete specimen is abnormal, the batching ratio of the concrete specimen is changed, and the anti-permeability performance testing method is repeated to find the optimal batching ratio of the concrete specimen.

[0114] Example 5

[0115] See also Figure 4 , Figure 4 Schematic diagram of an electronic device provided by an embodiment of the present invention. Figure 4 As shown, an embodiment of the present invention provides a device 500, including a memory 510, a processor 520, and a computer program 511 stored in the memory 510 and executable on the processor 520. When the processor 520 executes the computer program 511, the following steps are implemented:

[0116] S1: Prepare concrete specimens of standard size and perform pretreatment;

[0117] S2: Obtain the permeability parameters of each concrete specimen by calculation and measurement, wherein the permeability parameters include permeability coefficient and permeability depth;

[0118] S3: Processing the permeability coefficient and the penetration depth of the concrete specimen to obtain a permeability coefficient factor and a penetration depth factor, processing the permeability coefficient factor and the penetration depth factor to obtain a permeability performance score, and comparing them with the permeability performance score threshold to determine whether the permeability performance of the prepared concrete specimen sample group is normal;

[0119] S4: Based on the judgment of the impermeability performance, the prepared concrete specimens are tested for impermeability performance under different environmental conditions.

[0120] Example 6

[0121] See also Figure 5 , Figure 5 A schematic diagram of an embodiment of a computer-readable storage medium provided in an embodiment of the present invention. Figure 5As shown, this embodiment provides a computer-readable storage medium 600, on which a computer program 611 is stored. When the computer program 611 is executed by a processor, the following steps are implemented:

[0122] S1: Prepare concrete specimens of standard size and perform pretreatment;

[0123] S2: Obtain the permeability parameters of each concrete specimen by calculation and measurement, wherein the permeability parameters include permeability coefficient and permeability depth;

[0124] S3: Processing the permeability coefficient and the penetration depth of the concrete specimen to obtain a permeability coefficient factor and a penetration depth factor, processing the permeability coefficient factor and the penetration depth factor to obtain a permeability performance score, and comparing them with the permeability performance score threshold to determine whether the permeability performance of the prepared concrete specimen sample group is normal;

[0125] S4: Based on the judgment of the impermeability performance, the prepared concrete specimens are tested for impermeability performance under different environmental conditions.

[0126] It should be noted that in the above embodiments, the description of each embodiment has its own emphasis, and for parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0127] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0128] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded computer, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0129] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0130] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 Steps for specifying functions in a box or boxes

[0131] The technical solution of the embodiment of the present invention is as follows: according to GB / T 50081 standard, a standard concrete specimen with a size of 150 mm×150 mm×150 mm is prepared, and the permeability coefficient K is calculated by Darcy's law, which involves parameters such as fluid viscosity, volume flow rate, porous material thickness, total cross-sectional area of ​​fluid passing through porous materials, pressure difference, etc., and the penetration depth H is obtained by measuring the deepest depth of the water mark; the permeability coefficient factor Wa and the penetration depth factor Wb are obtained, and the anti-permeability performance score Q is obtained through comprehensive analysis, the permeability coefficient factor Wa is obtained by calculating the permeability coefficient jump ratio J, the penetration depth factor Wb is obtained by calculating the penetration depth jump ratio M, and the anti-permeability performance score Q is obtained by the weighted average of the permeability coefficient factor Wa and the penetration depth factor Wb; different temperature ranges that may appear in the concrete specimen are preset, and are distributed into multiple temperature sub-ranges according to equal proportions; the anti-permeability performance of the concrete specimen is tested in different temperature sub-ranges, and the batching ratio of the concrete specimen is adjusted according to the test results to optimize the anti-permeability performance.

[0132] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A method for detecting concrete impermeability, characterized in that: The following steps are involved: S1: Prepare concrete specimens of standard size and perform pretreatment; S2: Obtain the permeability parameters of each concrete specimen by calculation and measurement, wherein the permeability parameters include permeability coefficient and permeability depth; S3: Processing the permeability coefficient and penetration depth of the concrete specimen to obtain a permeability coefficient factor and a penetration depth factor, comprehensively processing the permeability coefficient factor and the penetration depth factor to obtain a permeability performance score, and comparing it with the permeability performance score threshold to determine whether the permeability performance of the prepared concrete specimen sample group is normal; S4: Based on the judgment of the impermeability performance, the prepared concrete specimens are subjected to an impermeability performance test under different environmental conditions; In S2, the process of obtaining the permeability coefficient K is as follows: the concrete water permeability test uses concrete as a porous solid material to evaluate the water permeability resistance of concrete. By measuring the flow rate and flow velocity of water in the concrete in a unidirectional sufficiently slow steady-state flow process, the flow velocity and flow rate of the pressure liquid flowing through the concrete are first tested, and the permeability coefficient Ki is calculated according to Darcy's law; The process of obtaining the penetration depth Hi is as follows: at the end of the test, the specimen is cut or broken from the penetration surface to observe the traces of water penetration; the deepest depth of the water trace is measured using a vernier caliper or a microscope, which is the penetration depth Hi; In S3, the process of obtaining the permeability factor Wa is: Obtain the permeability coefficient ki of each concrete specimen; The permeability coefficients ki of i concrete specimens are integrated to obtain a permeability coefficient group; The average permeability coefficient Ky within the permeability coefficient group is calculated according to the mean calculation formula; Get the maximum permeability coefficient Kmax in the permeability coefficient group; Get the minimum permeability coefficient Kmin in the permeability coefficient group; By formula The fluctuation ratio Wk of the permeability coefficient group is calculated; By formula The permeability coefficient jump ratio J is calculated; Wherein, b1 and b2 are both preset proportional factors, and b1 and b2 are both greater than 0; The permeability coefficient jump ratio J of the concrete specimen and the permeability coefficient ki of the concrete specimen are processed to obtain the permeability coefficient factor Wa; By formula The permeability factor Wa is calculated; The process of obtaining the penetration depth factor Wb is: Obtain the penetration depth Hi of each concrete specimen; The penetration depths Hi of i concrete specimens are integrated to obtain a penetration depth group; The average mean value Hy of the penetration depth group is obtained by the mean calculation formula; By formula Get the standard deviation α of the penetration depth group; By formula The coefficient of variation CV of penetration depth was calculated; By formula The penetration depth jump ratio M is calculated; Wherein, b3 and b4 are both preset proportional factors, and b3 and b4 are both greater than 0; The penetration depth fluctuation ratio M of the concrete specimen and the penetration depth Hi of the concrete specimen are processed to obtain the penetration depth factor Wb; By formula The penetration depth factor Wb is calculated; Processing the permeability coefficient factor Wa of the concrete specimen and the penetration depth factor Wb of the concrete specimen; The anti-seepage performance score Q is calculated by the formula Q = W1*Wa+W2*Wb; Among them, the weight of the permeability coefficient factor Wa is assigned to W1, and the weight of the penetration depth factor Wb is assigned to W2; and comparing the anti-seepage performance score Q with a preset anti-seepage performance score threshold; If the anti-permeability performance score Q is greater than or equal to the preset anti-permeability performance score threshold, it means that the anti-permeability performance of the concrete specimen is normal; If the anti-permeability performance score Q is less than the preset anti-permeability performance score threshold, it means that the anti-permeability performance of the concrete specimen is abnormal.

2. A method for detecting concrete impermeability according to claim 1, characterized in that: Concrete specimens were prepared according to GB / T50081 standard.

3. A concrete impermeability detection method according to claim 2, characterized in that: The anti-permeability performance score Q is obtained by weighting the permeability coefficient factor Wa of the concrete specimen and the penetration depth factor Wb of the concrete specimen.

4. A method for detecting concrete impermeability according to claim 3, characterized in that: Preset the possible temperature range of the concrete specimen under actual conditions, and divide the temperature range into s temperature sub-ranges in equal proportion; The anti-permeability performance score of each temperature sub-interval is obtained respectively, and compared with the permeability performance score threshold to obtain the abnormal temperature sub-interval.

5. A method for detecting concrete impermeability according to claim 4, characterized in that: For the temperature range where the anti-permeability performance of the concrete specimen is abnormal, adjust the batching ratio of the concrete specimen and repeat the anti-permeability performance monitoring method.

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