Mortar fluidity testing system

Abstract

To provide a mortar flowability testing system that can efficiently perform the measurement of spread mortar and the calculation and recording of flow values, and also reliably calculate accurate flow values.SOLUTION: A mortar flowability testing system 1 includes: a camera unit 35 that photographs mortar M on a flow table 21 from above; a contour detection unit 311 that detects a contour line MB of the mortar M from a captured image; a long diameter and short diameter calculation unit 312 that defines a long diameter LD at two contour points on the contour line MB that have the greatest distance between the contour points, defines a short diameter SD at two intersections between an orthogonal line of the long diameter LD, and the contour line MB that have the greatest distance between the intersections, and calculates the lengths of the long diameter LD and the short diameter SD; a flow value calculation unit 313 that calculates a first average value of the lengths of the long diameter LD and short diameter SD, calculates a second average value of the lengths of the long diameter LD and short diameter SD based on other mortar M, and calculates a flow value that is an average value of the first average value and the second average value; and a test data recording unit 323 that stores the flow value.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a mortar fluidity test system used for testing the fluidity of mortar injected as a fixing material in, for example, rock bolt works and anchor works. [Background Art]

[0002] Conventionally, in rock bolt and ground anchor construction, using the table flow test specified in JIS R 5201 (Physical testing methods for cements) as a method for managing the softness and fluidity of mortar injected as a fixing material is stipulated as a daily management item. In this table flow test, as shown in Fig. 11, a substantially frustoconical flow cone 102 is placed on a flow table 101 of a table flow tester 100, uncured mortar after mixing is loaded into the flow cone 102 in two portions, after the uncured mortar is punctured 15 times over the entire surface with a tamping rod for each of the first and second loading, the flow cone 102 is pulled out.

[0003] Then, the handle 103 of the table flow tester 100 is rotated, the rotation-up and down movement conversion mechanism composed of the operating rod 104 of the flow table 101 and the cam 105 applies 15 dropping movements in 15 seconds to the mortar M remaining on the flow table 101, the major diameter identified as the maximum diameter of the spread mortar M and the minor diameter in the direction perpendicular to the major diameter are measured with a measuring scale 106, the average value of the major diameter and the minor diameter is calculated as the flow value, a photograph of the mortar M on the flow table 101 is taken, and the flow value and the taken photograph are recorded. Furthermore, JIS R 5201 stipulates that these operations are repeated twice from the beginning.

[0004] Furthermore, as another testing method, Patent Document 1 discloses a method in which a flow cone is placed in the center of a base plate placed on the floor at the site, polymer cement mortar is filled into the flow cone, the flow cone is pulled up and a transparent flat pressing plate is placed on top of the mortar test specimen, a weight is placed in the center of the pressing plate, and the maximum flow length of the mortar test specimen deformed by the weight of the pressing plate and the weight, and the flow length in the direction perpendicular to it are measured, and the average length of these is determined. [Prior art documents] [Patent Documents]

[0005] [Patent Document 1] Japanese Patent Publication No. 2022-30043 [Overview of the project] [Problems that the invention aims to solve]

[0006] Incidentally, when injecting mortar on-site, the site manager must perform the table flow test described above to measure the spread of mortar M, calculate and record the flow value, and confirm that the calculated flow value meets the required standard value for the mortar to be poured before proceeding with the mortar injection. As a result, on-site workers spend a lot of time waiting, making the construction work inefficient. Furthermore, because the site manager is rushed to perform the table flow test, measurement, calculation, and recording, errors in calculating the flow value are more likely to occur.

[0007] In view of the above problems, the present invention is proposed and aims to provide a mortar fluidity test system that can efficiently measure the spread of mortar, calculate and record the flow value when performing a table flow test of mortar, and can reliably calculate an accurate flow value. [Means for solving the problem]

[0008] The mortar flowability test system of the present invention is characterized by comprising: a table flow tester; a camera unit that photographs the mortar spread on the flow table of the table flow tester from above; a display unit that displays the image taken by the camera unit; a contour line detection unit that detects the contour line of the mortar from the captured image; a major axis / minor axis calculation unit that defines the major axis at two contour points where the distance between contour points set on the contour line is maximum, and defines the minor axis at two intersections where the distance between the orthogonal line of the major axis and the contour line is maximum, and calculates the length of the major axis and the length of the minor axis; a flow value calculation unit that calculates a first average value of the length of the major axis and the length of the minor axis, calculates a second average value of the length of the major axis and the length of the minor axis based on another sample of mortar, and calculates a flow value which is the average of the first average value and the second average value; and a test data recording unit that stores the flow value. According to this system, the tester simply needs to photograph the mortar spread on the flow table from above using the camera unit, and the measurement of the spread mortar, calculation of the flow value, and recording of the data will be performed automatically. This allows for efficient measurement, calculation, and recording of the spread mortar during mortar table flow tests. Furthermore, it eliminates the need for the tester to determine the long and short diameters of the spread mortar based on their experience and measure them with a measuring scale. Since the measurement of the spread mortar, calculation of the flow value, and recording of the data are performed automatically, accurate flow values ​​can be reliably calculated regardless of the tester's experience.

[0009] The mortar fluidity test system of the present invention is characterized by comprising an input unit into which test management information including information on the test site is input, and storing the test management information and the flow value in the test data recording unit in correspondence with the test management information and the flow value. According to this method, the reliability of test data can be improved by recording the input test management information in correspondence with the calculated flow values.

[0010] The mortar fluidity testing system of the present invention is characterized in that the camera unit, the display unit, the contour line detection unit, the major axis / minor axis calculation unit, the flow value calculation unit, the test data recording unit, and the input unit are all integrated and implemented in a portable tablet. According to this, since testers can perform mortar flow tests by preparing a table flow tester and a portable tablet, it is possible to increase the ease and convenience of conducting tests, as well as diversify the locations in which flow tests can be performed.

[0011] The present invention's mortar flowability testing system The apparatus comprises a table flow tester, a camera unit that photographs the mortar spread on the flow table of the table flow tester from above, a display unit that displays the image captured by the camera unit, a contour line detection unit that detects the contour line of the mortar from the captured image, a major axis / minor axis calculation unit that defines the major axis at two contour points where the distance between contour points set on the contour line is maximum, and defines the minor axis at two intersections where the distance between the orthogonal line of the major axis and the contour line is maximum, and calculates the length of the major axis and the length of the minor axis, a flow value calculation unit that calculates a first average value of the length of the major axis and the length of the minor axis, calculates a second average value of the length of the major axis and the length of the minor axis based on another sample of mortar, and calculates a flow value which is the average of the first average value and the second average value, and a test data recording unit that stores the flow value. The contour line detection unit detects the captured image Image center point The system extracts contour points based on the difference in pixel values ​​for each semi-linear region at predetermined angles with the origin as the origin, detects the contour line of the mortar defined by the arrangement of the contour points, and the major axis / minor axis calculation unit calculates, for each of the contour points corresponding to approximately a semicircle of the contour line of the mortar, the contour point and the origin with the contour point as the center point. pass In the clockwise direction of the line Within the contour line including the aforementioned contour line A predetermined angular region and counterclockwise direction In a sector-shaped region comprising the contour line and a predetermined angular region within the contour line, the contour point set as the center point and the portion of the contour line corresponding to the arc portion of the sector-shaped region exist Distance to another contour point each Calculate, Of the calculated distances The method is characterized by defining the major axis at two contour points where the distance between them is maximum, defining the minor axis at two intersection points where the distance between the orthogonal line of the major axis and the contour line is maximum, calculating the length of the major axis from the ratio on the image between the distance between two intersection points of a line parallel to the major axis passing through the origin and the edge of the flow table and the major axis, and calculating the length of the minor axis from the ratio on the image between the distance between two intersection points of a line parallel to the minor axis passing through the origin and the edge of the flow table and the minor axis. According to this method, the major and minor axes can be identified quickly with minimal computation, and the lengths of the major and minor axes, as well as the flow value, can be calculated. [Effects of the Invention]

[0012] According to the mortar fluidity test system of the present invention, when performing a mortar table flow test, measurement of the spread mortar, calculation and recording of the flow value can be efficiently performed, and an accurate flow value can be reliably calculated. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] [Figure 1] Block diagram showing the overall configuration of the mortar fluidity test system according to an embodiment of the present invention. [Figure 2] (a) and (b) are perspective explanatory views of a table flow tester in the mortar fluidity test system of the embodiment. [Figure 3] Flowchart showing test processing by the mortar fluidity test system of the embodiment. [Figure 4] Explanatory diagram showing an example of an input screen for test management information of a portable tablet in the mortar fluidity test system of the embodiment. [Figure 5] Explanatory diagram showing an example of a screen at the time of photographing by a camera unit of a portable tablet in the mortar fluidity test system of the embodiment. [Figure 6] Explanatory diagram showing an example of a screen during captured image analysis of a portable tablet in the mortar fluidity test system of the embodiment. [Figure 7] Screen explanatory diagram of processing for defining the major axis LD in the mortar fluidity test system of the embodiment. [Figure 8] Screen explanatory diagram of processing for defining the minor axis SD in the mortar fluidity test system of the embodiment. [Figure 9] Explanatory diagram showing an example of a screen at the time of calculating the lengths of the major axis and the minor axis of a portable tablet in the mortar fluidity test system of the embodiment. [Figure 10] Explanatory diagram showing an example of a confirmation screen for a flow value calculation result of a portable tablet in the mortar fluidity test system of the embodiment. [Figure 11] (a) and (b) are perspective explanatory diagrams for explaining flow value calculation by a conventional table flow tester. MODE FOR CARRYING OUT THE INVENTION

[0014] [Mortar Fluidity Test System of Embodiment] A mortar fluidity test system 1 according to an embodiment of the present invention, as shown in FIG. 1 and FIG. 2, is composed of a table flow tester 2 used when performing a table flow test in accordance with JIS R 5201 (Physical testing methods for cements), and a portable tablet 3. The table flow tester 2 includes a disk-shaped flow table 21, an operating rod 22 protruding downward from a substantially central position of the flow table 21, a handle 23, and a cam 24. By rotating the cam 24 through the rotational operation of the handle 23, the operating rod whose lower end abuts against the cam 24 and the flow table 21 fixed to the operating rod 22 are moved up and down. That is, the cam 24 and the operating rod 22 constitute a rotation-up / down movement conversion mechanism.

[0015] On the flow table 21, a substantially frustoconical flow cone 25 whose inner diameter gradually increases downward is placed. Unharded mortar that has been mixed is placed into the flow cone 25 that has been placed on the flow table 21 from the upper opening, and the entire upper surface of the unhardened mortar is compressed by being punctured 15 times with a punching rod 26. Then, after extracting the flow cone 25, the handle 23 is rotated to move the flow table 21 up and down, so that the mortar M remaining on the flow table 21 is subjected to 15 dropping movements within 15 seconds to allow the mortar M to spread. Thereafter, the mortar M spread on the flow table 21 is photographed from above by a camera unit 35 of the portable tablet 3, which will be described later. After the mixed unhardened mortar is placed in the flow cone 25 and the mortar M is allowed to spread, the operation of photographing from above by the camera unit 35 of the portable tablet 3 is performed twice.

[0016] The portable tablet 3 comprises a control unit 31 such as a CPU, a storage unit 32 composed of ROM, RAM, flash memory, etc., an input unit 33 such as a touch panel, a display unit 34 such as a touch panel that also serves as the input unit 33, a camera unit 35 that photographs the mortar M spread on the flow table 21 of the table flow tester 2 from above, and a built-in timer 36. The storage unit 32 includes a control program storage unit 321 that stores a control program that works in cooperation with the control unit 31 to control the portable tablet 3, an image processing data storage unit 322 that stores image processing data used for image processing of the contour line detection unit 311 and the major axis / minor axis calculation unit 312 (described later), and a test data recording unit 323 that stores test management information and flow values ​​in correspondence with test management information (described later).

[0017] The control unit 31 works in cooperation with a predetermined test processing control program in the control program storage unit 321 and performs the functions of a contour line detection unit 311 that detects the contour line MB of the mortar M from the image captured by the camera unit 35, a major axis / minor axis calculation unit 312, a flow value calculation unit 313, and a recording storage processing unit 314. In this embodiment, the contour line detection unit 311 detects the flow table 21 of the table flow tester 2 from the image captured by the camera unit 35 and adjusts the image scale to match the size of the flow table 21 in the image with the size of the actual flow table 21 (a circular table with a table diameter of 300 ± 1 mm according to JIS standards). The flow table 21 from the captured image can be detected by appropriate processing such as a process that recognizes and detects boundaries based on differences in pixel values, or a process that detects them by pattern matching.

[0018] Furthermore, the contour line detection unit 311 removes the area outside the detected flow table 21 as noise and detects the contour line MB of the area where mortar M exists on the flow table 21. While it is possible to use appropriate processing, such as recognizing and detecting boundaries based on differences in pixel values, to detect the contour line MB of mortar M on the flow table 21, the contour line detection unit 311 in this embodiment extracts contour points based on differences in pixel values ​​for semi-linear regions at predetermined angles with the center point of the captured image as the origin, and detects the contour line MB of mortar M defined by the arrangement of the extracted contour points.

[0019] The major axis / minor axis calculation unit 312 defines the major axis LD at two contour points where the distance between contour points set on the contour line MB of the mortar M is maximized, and defines the minor axis SD at two intersection points where the distance between the orthogonal line of the major axis LD and the contour line MB is maximized, and calculates the lengths of the major axis LD and the minor axis SD.

[0020] In this embodiment, the major axis / minor axis calculation unit 312 calculates the distance between the contour point of the center point and another contour point in a predetermined angular region in the clockwise direction and a predetermined angular region in the counterclockwise direction of the line connecting the contour point and the origin, which is the intersection point of the central index line CL, displayed during shooting and captured as an image (see Figure 5), with each contour point as the center point. The major axis LD is calculated at the two contour points where the distance between them is maximized. In addition to defining the major axis LD, the minor axis SD is defined at the two intersections of the orthogonal line of the major axis LD and the contour line MB that have the maximum distance between them. The length of the major axis LD is calculated from the ratio on the image between the distance between the two intersections of the line parallel to the major axis LD passing through the origin, which is the center point of the image, and the edge of the flow table 21, and the length of the minor axis SD is calculated from the ratio on the image between the distance between the two intersections of the line parallel to the minor axis SD passing through the origin, which is the center point of the image, and the edge of the flow table 21, and the length of the minor axis SD.

[0021] The flow value calculation unit 313 calculates a first average value from the length of the first major axis LD and the length of the first minor axis SD calculated from the image of the mortar M spread for the first time in the table flow tester 2, and calculates a second average value from the length of the second major axis LD and the length of the second minor axis SD calculated from the image of the mortar M spread for the second time in the table flow tester 2, and calculates the flow value of the mortar M, which is the average of the first average value and the second average value.

[0022] The display unit 34 displays images captured by the camera unit 35 in real time. In addition, test management information, including information about the test location, is input from the input unit 33. The record storage processing unit 314 of the control unit 31 then associates the input test management information with the calculated flow value, obtains the recording date and time of the calculated flow value from the built-in timer 36, and stores it in the test data recording unit 323 in a format that associates the recording date and time with the test management information and the calculated flow value.

[0023] When conducting a test with the mortar fluidity test system 1 of this embodiment, as shown in Figure 3, the tester inputs test management information, including information about the test site, into the portable tablet 3 via the input unit 33, and the input test management information is stored in the test data recording unit 323 (S1). Figure 4 is an example of the input screen for test management information on the portable tablet 3, where information such as the test number, site name and location corresponding to the test site, and contractor is input from the input unit 33. The tester also prepares a sample of mortar M spread on the flow table 21 as the sample for the first test using the table flow tester 2 (S2).

[0024] The tester uses the camera unit 35 of the portable tablet 3 to photograph the mortar M spread on the flow table 21 from above, and the control unit 31 of the portable tablet 3 stores the captured image in a predetermined storage area of ​​the storage unit 32 (S3). When photographing the mortar M spread on the flow table 21 from above with the camera unit 35, for example as shown in Figure 5, the center of the flow table 21 should be positioned as close as possible to the intersection of the center indicator line CL on the shooting screen displayed on the display unit 34, and the flow table 21 should be photographed so that it is within the area enclosed by the shooting guide line AL. Also, if the tester's shadow is captured on the flow table 21 due to lighting or sunlight during shooting, it is advisable to hang an appropriate shade or curtain around the table flow tester 2.

[0025] The contour line detection unit 311 of the portable tablet 3 detects the flow table 21 from the image captured by the camera unit 35, adjusts the image scale to match the size of the flow table 21 in the image with the actual size of the flow table 21, removes the area outside the detected flow table 21 as noise (S4), extracts contour points by the difference in pixel values ​​for half-linear regions at predetermined angles with the center point of the captured image as the origin, and detects the contour line MB of the region where mortar M exists on the flow table 21 defined by the arrangement of the extracted contour points (S5). Figure 6 is an example of the screen of the display unit 34 at the time when the captured image has been analyzed, the image scale has been adjusted, and the contour line MB has been detected.

[0026] The major axis / minor axis calculation unit 312 of the portable tablet 3 calculates the distance between the contour point at the center point and another contour point for each contour point corresponding to approximately a semicircle of the contour line MB of the mortar M, within a predetermined angular region in the clockwise direction and a predetermined angular region in the counterclockwise direction of the line connecting the contour point and the origin C, which is the center point of the image, with the contour point as the center point. The unit defines the major axis LD at the two contour points where the distance between them is maximum, and defines the minor axis SD at the two intersection points where the distance is maximum among the two intersection points between the orthogonal line of the major axis LD and the contour line MB (S6).

[0027] In defining the major axis LD, for example, using contour point B1 in Figure 7 as the center point, the distance between the center contour point B1 and other contour points is calculated in predetermined angular regions such as 15 degrees clockwise and 15 degrees counterclockwise (the sector-shaped region between the dashed lines in Figure 7) along the line connecting contour point B1 and the origin C, the center point of the image. This calculation process is performed for each contour point corresponding to approximately a semicircle of the contour line MB of the mortar M, as shown by the thick arrows in Figure 7, to identify the two contour points with the maximum distance between them, and the major axis LD is defined using these two contour points. In defining the minor axis, for example, as shown by the dashed lines in Figure 8, two intersection points are extracted between the defined orthogonal line of the major axis LD and the contour line MB, and the two intersection points with the maximum distance between them are extracted, and the minor axis SD is defined using these two intersection points.

[0028] Furthermore, as shown in Figure 9, the major axis / minor axis calculation unit 312 calculates the length of the major axis LD from the ratio on the image between the distance between two intersection points of the line parallel to the major axis LD passing through the origin C, which is the center point of the image, and the edge of the flow table 21, and the length of the minor axis SD from the ratio on the image between the distance between two intersection points of the line parallel to the minor axis SD passing through the origin C, which is the center point of the image, and the edge of the flow table 21, and the length of the minor axis SD (S7). The flow value calculation unit 313 calculates a first average value from the length of the first major axis LD and the length of the first minor axis SD (S8).

[0029] Furthermore, if the above test is the first time, the tester prepares a sample of mortar M spread on the flow table 21 using the table flow tester 2 as a sample for the second test (S9, S2). The camera unit 35 of the portable tablet 3 photographs the mortar M spread on the flow table 21 from above, and the control unit 31 of the portable tablet 3 repeats the process from S3 to S8, and the flow value calculation unit 313 calculates a second average value from the length of the second major axis LD and the length of the second minor axis SD (S8). In response to the calculation of the second average value, or in response to a calculation command input from the input unit 33, the flow value calculation unit 313 calculates the flow value of the mortar M, which is the average value obtained by averaging the first average value of the length of the first major axis LD and the length of the first minor axis SD, and the second average value of the length of the second major axis LD and the length of the second minor axis SD (S10).

[0030] The recording and storage processing unit 314 of the portable tablet 3 acquires the recording date and time of the calculated flow value from the built-in timer 36 in response to a recording command input from the input unit 33, and stores it in the test data recording unit 323 in a format that associates the recording date and time with the test management information and the calculated flow value (S11). Figure 10 is an example of a confirmation screen of the portable tablet 3 showing the flow value calculation results, which reflects the test management information, the first average value of the length of the first major axis LD and the length of the first minor axis SD, the second average value of the length of the second major axis LD and the length of the second minor axis SD, and the flow value of mortar M, which is the average value obtained by averaging the first and second average values. When the PDF button or the like is pressed on this confirmation screen example, the recording date and time of the calculated flow value is acquired from the built-in timer 36, and test data in a format that associates the recording date and time with the test management information and the calculated flow value is stored in the test data recording unit 323. The correspondence data between the recording date and time stored in the test data recording unit 323, the test management information, and the calculated flow value can be displayed on the display unit 34 as appropriate in response to the display command input from the input unit 33.

[0031] According to the mortar flowability test system 1 of this embodiment, the tester simply photographs the mortar M spread on the flow table 21 from above with the camera unit 35, and the measurement of the spread mortar M, the calculation of the flow value, and the recording of the record are performed. Therefore, when performing a table flow test of mortar M, the measurement of the spread mortar M, the calculation of the flow value, and the recording of the record can be performed efficiently. Furthermore, it is no longer necessary for the tester to determine the major axis LD and minor axis SD of the spread mortar M based on their experience and measure them with a measuring scale. Since the measurement of the spread mortar M, the calculation of the flow value, and the recording of the record are performed automatically, accurate flow values ​​can be reliably calculated regardless of the tester's experience. In addition, the reliability of the test data can be increased by recording the calculated flow value in correspondence with the input test management information.

[0032] Furthermore, by integrating the camera unit 35, display unit 34, contour line detection unit 311, major axis / minor axis calculation unit 312, flow value calculation unit 313, test data recording unit 323, input unit 33, etc., into a single portable tablet 3, the tester can perform a fluidity test of mortar M simply by preparing the table flow tester 2 and the portable tablet 3. This improves the ease and convenience of conducting the test, and also diversifies the locations in which the fluidity test can be performed.

[0033] Furthermore, the processing by the major and minor axis calculation unit 312 allows for the rapid identification of the major and minor axes with minimal computation, and enables the calculation of the lengths of the major and minor axes, as well as the calculation of flow values.

[0034] [Scope of the invention disclosed herein] The inventions disclosed herein include, in addition to the inventions and embodiments listed herein, the inventions disclosed herein also include, to the extent applicable, those that modify the partial content of these inventions to include other content disclosed herein, or those that add other content disclosed herein to these inventions, or those that delete the partial content to the extent that partial effects are obtained and define them as broader concepts. Furthermore, the inventions disclosed herein also include the following and modifications.

[0035] For example, in the mortar fluidity test system 1 of this embodiment, the camera unit 35, display unit 34, contour line detection unit 311, major axis / minor axis calculation unit 312, flow value calculation unit 313, test data recording unit 323, and input unit 33 are integrated and implemented on a portable tablet 3. However, it is also possible to make some of these components separate. For example, the system could be configured with a portable PC equipped with a display unit, contour line detection unit, major axis / minor axis calculation unit, flow value calculation unit, and test data recording unit, and a separate camera unit connected to this portable PC. Alternatively, the system could be configured with a portable tablet equipped with a camera unit, display unit, contour line detection unit, major axis / minor axis calculation unit, and flow value calculation unit, and a personal computer or server equipped with a test data recording unit.

[0036] Furthermore, the contour line detection unit 311 can perform the process of detecting the contour line MB of the mortar M from the captured image using any appropriate technique that can detect the contour line MB. In addition, the major axis / minor axis calculation unit 312 can also perform the process of setting representative points on the contour line MB of the mortar M using any appropriate technique that can set representative points. [Industrial applicability]

[0037] This invention can be used, for example, when conducting fluidity tests on mortar injected as a fixing material in rock bolt construction or anchor construction. [Explanation of Symbols]

[0038] 1…Mortar fluidity testing system 2…Table flow tester 21…Flow table 22…Operating rod 23…Handle 24…Cam 25…Flow cone 26…Pounding rod 3…Portable tablet 31…Control unit 311…Contour detection unit 312…Major axis / minor axis calculation unit 313…Flow value calculation unit 314…Recording and storage processing unit 32…Storage unit 321…Control program storage unit 322…Image processing data storage unit 323…Test data recording unit 33…Input unit 34…Display unit 35…Camera unit 36…Built-in timer M…Mortar MB…Contour line LD…Major axis SD…Minor axis CL…Center indicator line AL…Shooting guide line C…Origin corresponding to the center point of the image B1…Contour point 100…Table flow tester 101…Flow table 102…Flow cone 103…Handle 104…Operating rod 105…Cam 106…Measuring scale

Claims

1. Table flow tester and A camera unit that photographs the mortar spread on the flow table of the aforementioned table flow tester from above, A display unit that displays the image captured by the camera unit, An outline detection unit that detects the outline of the mortar from the captured image, A major axis / minor axis calculation unit defines the major axis at two contour points where the distance between contour points set on the contour line is maximized, and defines the minor axis at two intersection points where the distance between the orthogonal line of the major axis and the contour line is maximized, and calculates the length of the major axis and the length of the minor axis. A flow value calculation unit calculates a first average value of the length of the major axis and the length of the minor axis, calculates a second average value of the length of the major axis and the length of the minor axis based on another mortar, and calculates a flow value which is the average of the first average value and the second average value. The system includes a test data recording unit that stores the aforementioned flow values, The contour line detection unit extracts contour points based on the difference in pixel values ​​for semi-linear regions at predetermined angles, with the center point of the captured image as the origin, and detects the contour line of the mortar defined by the arrangement of the contour points. The aforementioned major axis / minor axis calculation unit, For each of the contour points corresponding to approximately a semicircle of the mortar contour line, in a sector-shaped region consisting of a predetermined angular region within the contour line including the contour line in a clockwise direction and a predetermined angular region within the contour line including the contour line in a counterclockwise direction, with the contour point as the center point, the distance between the contour point set as the center point and another contour point located in the portion of the contour line corresponding to the arc of the sector-shaped region is calculated, and the major axis is defined by the two contour points with the maximum mutual distance among the calculated distances, and the minor axis is defined by the two intersection points with the maximum distance between the orthogonal line of the major axis and the contour line. The length of the major axis is calculated from the ratio on the image between the distance between two intersection points of a line parallel to the major axis passing through the origin and the edge of the flow table, and the major axis. The length of the minor axis is calculated from the ratio on the image between the distance between two intersection points of a line parallel to the minor axis passing through the origin and the edge of the flow table, and the minor axis. A mortar fluidity testing system characterized by the following features.

2. It is equipped with an input section into which test management information, including information about the test location, is entered. The mortar fluidity test system according to claim 1, characterized in that the test management information and the flow value are associated with each other and stored in the test data recording unit.

3. The mortar fluidity test system according to claim 2, characterized in that the camera unit, the display unit, the contour line detection unit, the major axis / minor axis calculation unit, the flow value calculation unit, the test data recording unit, and the input unit are all integrated into a portable tablet.

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