JP2018046346A - Concrete quality management method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a concrete quality management method for enabling both of a ready-mixed concrete plant and construction site to easily share a concrete test result, and easily and accurately determine good or bad of quality of ready-mixed concrete.SOLUTION: A concrete quality management method includes: transmitting at least plant test image data 4A, 5A on concrete to a host computer 1, by using a plant communication apparatus 2; transmitting at least site test image data 4B, 5B on concrete to the host computer 1, by using a site communication apparatus 3; and accessing the host computer 1 from a plant and construction site via the plant communication apparatus 2 and site communication apparatus 3 to confirm the test image data. In the host computer 1 are stored plant test criterion image data and/or site test criterion image data to be an admission determination criterion for a test result to compare the test image data with the test criterion image data.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a concrete quality control method.

  In a ready-mixed concrete plant, as a quality control test for ready-mixed concrete, plant tests that measure properties such as slump value, air content, chloride content, unit water content, etc., are stored in a computer and databased. . Further, the hardened concrete is subjected to a compressive strength test. For example, the 1 week strength and the 4 week strength are measured, and the test data is stored in a computer, and similarly databased.

  At construction sites where ready-mixed concrete is placed, construction managers check the results of quality control tests of ready-mixed concrete over the phone at any time, but depending on the site environment, the radio wave condition of the phone may be poor or the telephone line may be crowded. In many cases, it takes a long time to confirm the quality control test results in the plant.

  In such a case, quality control of the ready-mixed concrete may be neglected, or a predetermined instruction may be delayed from the construction site to the plant, and there is a risk that accurate site management may be hindered.

  Therefore, there is an urgent need to develop a confirmation method in which the construction manager does not need to confirm the quality control test results of ready-mixed concrete by telephone.

  On the other hand, even at construction sites where ready-mixed concrete is carried in, field tests such as slump values are conducted under the construction manager.

  As a result of the field test, the degree of hardness of ready-mixed concrete is notified to the plant by telephone, and the plant uses the fed back information for the subsequent preparation of ready-mixed concrete. As described above, the problem to be improved is inherent because it takes time and effort.

  In addition, quality control of ready-mixed concrete generally involves exchange of character data represented by numerical values and characters between the plant and the construction site. For example, if only the slump value is measured in a slump test However, it is unclear how the properties and shape of the specimen are. As for the slump flow, 1.5 to 1.8 times the slump value may be recommended as the standard, but the condition of the ready-mixed concrete when expanded (coarse aggregates are present throughout the entire range) It is difficult to judge whether it is good or bad by numerical values alone.

  In this way, the quality control of ready-mixed concrete cannot be accurately controlled by numerical values alone, and visual properties must be managed. It is extremely difficult to accurately judge good or bad.

  Here, in Patent Document 1, specific data is displayed on a display (display means) of a personal computer, which is an information processing device, and a photograph related to this data is photographed to create photograph data. Various data for inputting to a personal computer, recording specific data and photographic data in association with each other, and transmitting these data to a host computer and a photographic data recording method related thereto are disclosed.

Japanese Patent Laid-Open No. 2003-074433

  According to the various data described in Patent Document 1 and the related photographic data recording method, it is possible to save the labor required for associating the various data with the photographic data, and various data unrelated to each other due to human error. The photograph data can be prevented from being associated.

  In other words, character data and related image data are converted into data and accessed by a host computer, so that both character data and related image data can be confirmed. Access to the computer eliminates the need for telephone information exchange. Furthermore, since image data related to this exists in addition to character data, it is assumed that quality control can be easily performed.

  However, the image data referred to in Patent Document 1 is an image of only the state of the test apparatus and the ready-mixed concrete in the actual quality control test. From this image, the ready-made concrete is of good quality (for example, in the slump test). It is difficult to easily understand that the concrete has a good slump value and shape at the time, and this is even more remarkable for construction managers with little experience in construction management.

  The present invention has been made in view of the above problems, and both the ready-mixed concrete plant and the construction site can easily share the test results of the concrete without exchanging information by telephone or the like. It is an object of the present invention to provide a concrete quality control method that allows even an inexperienced construction manager to easily and accurately judge the quality of ready-mixed concrete.

  In order to achieve the above object, a concrete quality control method according to the present invention uses a plant communication device in a plant to transmit at least concrete plant test image data to a host computer and uses a field communication device in a construction site. At least the concrete field test image data is transmitted to the host computer, and the host computer is accessed from the plant and the construction site via the plant communication device and the field communication device, and stored in the host computer. A concrete quality control method for confirming test image data that has been processed, wherein the host computer includes plant test reference image data that is a criterion for determining whether or not the test results are acceptable in the plant, and / or the construction. Combine test results in the field Criteria and are field testing the reference image data storage comprising, when accessing to the host computer, and performs quality control of concrete by comparing the test reference image data and the test image data.

  In the concrete quality control method of the present invention, the plant and the construction site transmit the concrete test data to a common host computer, and the host computer from both sides accesses the host computer to confirm the concrete test data. Both of them can share the concrete test results without exchanging information over the phone, etc., and when they want to confirm, they can immediately confirm the test results.

  Here, “send at least concrete plant test image data to the host computer” means that the transmitted data is not only the concrete plant test image data, but also the plant communication image of the concrete by the plant communication device. There is plant test character data obtained by extracting character data from the data. “At least concrete field test image data” means that the data to be transmitted is not only concrete field test image data, but in addition to this, character data in the concrete field test image data is extracted by a field communication device. There is field test character data. These test character data are text data, and character data extracted by a character conversion application (application) built in a plant communication device or a field communication device is converted into text data.

  In addition, plant test reference image data that is a criterion for determining whether or not a test result is acceptable in the plant and on-site test criterion image data that is a criterion for determining whether or not the test result is acceptable at a construction site are stored in advance in the host computer.

  In this way, test image data is transmitted to the host computer, and the plant and construction site can access the host computer to check the test image data, so that the test contents can be easily grasped and the reliability of the test results is guaranteed. can do. Then, test standard image data, which is a criterion for determining whether or not the test result is acceptable, is referred to in the host computer, and the plant and the construction site can visually recognize the test image data and the test standard image data and compare them. Even a shallow construction manager or an inexperienced plant manager can easily and accurately judge the quality of ready-mixed concrete.

  The host computer is in a cloud server, for example. In addition, the plant communication device and the on-site communication device may be in any form such as a personal computer, a smartphone, a tablet terminal provided with at least a communication means and an imaging means. The form and model are not asked.

  Here, the plant test character data and the field test character data extracted from the test image data include slump value, air amount, chloride content, unit water amount, etc., and the test character data includes numerical values, characters, General graphs are included. Further, the plant test image data and the field test image data include a slump test situation photo, a measurement photo of air amount and chloride ion concentration, and the like. Further, in addition to the test data of the ready-mixed concrete, for example, the compressive strength test result relating to the 1 week strength and the 4 week strength of the concrete, and the compression test status photograph are included in the plant test character data and the plant test image data.

  Regarding the slump property of ready-mixed concrete, it is impossible to accurately judge whether it is good or bad only by using the slump value and the slump flow value as test character data. For example, even if the slump value is the same, a part of the slump value may be rough, or the property of the slump may be known depending on the shape of the slump. Furthermore, even if the slump flow value is the same, the same slump flow value is obtained when the coarse aggregate remains in the center and does not move to the outer peripheral portion, and when it moves evenly as a whole. May show.

  Therefore, by checking not only the slump value and the slump flow value but also the test image data, it is possible to clearly determine whether the slump property is good or bad. Then, as test standard image data, which is a standard for determining whether the slump property is good or bad, the optimum image data is selected as the standard for determination from the past image data possessed by the plant, construction site, construction company, etc. By comparing the image data with the test reference image data, even an inexperienced administrator can easily and accurately determine whether the slump property is good or bad.

  Moreover, also regarding a compression test, it confirms the quality of a coarse aggregate by confirming the destruction condition of a specimen by image data. In addition, the factors that cause a bad fracture condition include that the flatness of the upper surface of the specimen is not appropriate and that an eccentric load is acting on the specimen. By making a comparison, the necessity of retesting can be examined.

  As another embodiment of the concrete quality control method according to the present invention, the test image data and the test reference image data are automatically compared in the host computer, and the test image data is rejected. When it is determined that, an alarm is notified to the plant communication device and / or the field communication device.

  For example, using image software stored in the host computer, the test image data relating to the slump flow and the test reference image data are superimposed, and a predetermined threshold value is provided for the difference value between the two, and the difference value exceeds the threshold value. In some cases, the test image data may be rejected. In addition, in the specimen after the compression test, the angle and number of fracture cracks appearing on the side surface of the specimen are read with image software or the like, and a certain threshold is set for the angle and number of fracture cracks. For example, the test image data may be rejected when the number does not satisfy the threshold.

  According to the quality control method of the present embodiment, it is possible to automate the quality control, and it is possible to save the management effort by the construction manager or the like.

  As another embodiment of the concrete quality control method according to the present invention, a concrete strength test date is stored in the host computer, and the plant communication device and the on-site communication device are stored on the strength test date. The form which is notified that it is a strength test date can be mentioned.

  By notifying the plant and the construction site of the concrete strength test date (for example, 1 week strength test date, 4 week strength test date, etc.) from the host computer, it is possible to prevent forgetting the test.

  Further, an X-R control chart may be created in the host computer based on the plant test character data and the field test character data.

  According to the concrete quality control method of the present invention, the plant and the construction site transmit the respective concrete test data to a common host computer, and access the host computer from both sides to confirm the concrete test data. Both construction sites can share the concrete test results without exchanging information over the telephone, etc., and the test results can be confirmed immediately when they want to confirm.

  In addition, the test image data and test character data are transmitted to the host computer and stored, and the test standard image data, which is a criterion for determining whether or not the test results are acceptable, is stored in advance in the host computer. Since the test image data can be confirmed in addition to the character data, the contents of the test can be easily grasped and the credibility of the test result can be guaranteed.

  Further, by comparing the test image data with the test reference image data, even an inexperienced administrator can easily and accurately determine whether the slump property is good or bad.

It is the schematic diagram explaining embodiment of the quality control method of the concrete of this invention. It is the schematic diagram which showed the plant test character data and the plant test image data relevant to this in a host computer. It is the figure which showed the test reference | standard image data regarding a slump property (a good example and a bad example). It is the figure which showed the test reference | standard image data (good example and bad example) regarding the destruction condition of the test body in a compression test. It is the figure which showed the XR control chart (X ^bar control chart and R control chart) which was created with the host computer.

  Hereinafter, embodiments of a concrete quality control method of the present invention will be described with reference to the drawings. In the quality control method shown in the figure, information is shared between the plant and the construction site, but in addition to these, the headquarters and branch offices of the construction company that oversees the construction site, the design manager, and the construction orderer are also hosts. The computer may be accessible, and necessary information may be transmitted to the host computer via a communication device.

(Embodiment of concrete quality control method)
FIG. 1 is a schematic diagram illustrating an embodiment of a concrete quality control method according to the present invention. The quality control method of the present invention includes a host computer 1 shown in FIG. 1, a plant communication device 2 in a ready-mixed concrete plant that can transmit data to the host computer 1 and can visually check data in the host computer 1, and a construction site. Is a method of performing quality control using the on-site communication device 3 in FIG.

  Here, the host computer 1 is in a cloud server, and the plant communication device 2 and the on-site communication device 3 are composed of a tablet terminal or the like provided with at least communication means and imaging means.

  In a ready-mixed concrete plant, plant test image data 4A and 5A of concrete are imaged using the plant communication device 2 (Y1 direction and Y2 direction), and the plant test image data 4A and 5A are captured by the plant communication device 2. Character data is extracted and converted into character test data by a character conversion application (application) built in the plant communication device 2, and plant test image data 4A, 5A and plant test character data are converted into the host computer 1 (X1 direction).

  On the other hand, at the construction site, the on-site communication device 3 is used to image the concrete on-site test image data 4B and 5B (Y3 direction, Y4 direction). Character data is extracted, converted into character test character data by a character conversion application built in the field communication device 3, and field test image data 4B, 5B and field test character data are transmitted to the host computer 1. (X2 direction).

  Although illustration of a specific internal configuration of the host computer 1 is omitted, a receiving unit that receives various data transmitted from the plant communication device 2 and the on-site communication device 3, a storage unit that stores various received data, and various data An information data creating unit that extracts predetermined information from the information to create information data, and a CPU, RAM, ROM, and the like that control the operation of each unit are connected by a bus. In addition, the plant communication device 2 and the field communication device 3 do not have a built-in character conversion application, the host computer 1 reads a character in the test image data (ODR (Optical Data Reader)), and the test character data is converted to a character. A character conversion unit (OCR (Optical Character Reader)) to be converted may be incorporated, and character data in test image data received in the host computer 1 may be extracted and converted into characters.

  In the host computer 1, for example, test character data extracted from various test image data as shown in FIG. 2 and character-converted is stored together with the test image data.

  The plant and the construction site respectively access the host computer 1 via the plant communication device 2 and the field communication device 3, and from the test image data 4A, 5A, 4B, 5B stored in the host computer 1, and the image data Check the extracted test character data.

  In this way, both the plant and the construction site access the host computer 1 and confirm the test character data and the test image data, so that both the plant and the construction site can exchange information on the concrete test results by telephone or the like. The test results can be checked immediately when you want to check them.

  In the quality control method of the present invention, plant test reference image data, which is a determination criterion for pass / fail of test results, is stored in advance in a plant, and on-site test reference image data, which is a determination criterion for pass / fail of test results, is stored in a construction site. Yes. Note that only one of the plant test reference image data and the field test reference image data may be stored in the host computer 1 as reference image data.

  Here, FIG. 3 is a diagram showing test reference image data (good example and bad example) relating to the slump properties, and FIG. 4 is a test reference image data (good example and bad example) relating to the fracture state of the specimen in the compression test. FIG.

  The slump property is good or bad. Two kinds of examples shown in FIG. 3 stored in the host computer 1 are used as test reference image data 6, and similarly, test image data 5 A and 5 B relating to the slump test stored in the host computer 1. Is compared with the test reference image data 6 to perform quality control of the concrete. The illustrated test reference image data 6 is selected from past image data possessed by a plant, a construction site, a construction company, or the like.

  In this way, by comparing the test image data 5A and 5B with the test reference image data 6, even an inexperienced administrator or the like can easily and accurately determine whether the slump property is good or bad.

  On the other hand, the quality of the compression test is based on the two types of examples shown in FIG. 4 stored in the host computer 1 as test reference image data 6, and the test image data 4 A relating to the compression test stored in the host computer 1. , 5A, 4B, and 5B are compared with the test reference image data 6 to perform quality control of the compression test. Specifically, the quality of the coarse aggregate can be confirmed and the quality of the test conditions can be determined based on the number and angle of fracture cracks generated on the side surface of the specimen after the compression test.

  For example, as a cause of the bad example shown in FIG. 3, the flatness of the upper surface of the specimen is not appropriate, an eccentric load is acting on the specimen, and the like. By comparing the test image data 4A, 5A, 4B, and 5B with the test reference image data 6 to determine whether the destruction status is good or not, the necessity of retesting can be examined, and a compression test is performed again as necessary. Accurate compressive strength can be obtained. The compressive strength test results often correlate with the ready-mixed concrete test results, so if the compressive strength test results fail, immediately check the ready-mixed test results and elucidate the cause of the failure. Can also be performed on the spot.

  On the other hand, the test image data 4A, 5A, 4B, 5B and the test reference image data 6 are automatically compared in the host computer 1, and it is determined that the test image data 4A, 5A, 4B, 5B is rejected. In some cases, an alarm is notified to the plant communication device 2 and / or the field communication device 3.

  In this method, an image processing unit is built in the host computer 1, and for example, test image data 4A, 5A, 4B, and 5B relating to the slump flow and the test reference image data 6 are overlapped by the image processing unit. Both difference values are provided with a certain threshold value in advance. When the difference value exceeds the threshold value, the test image data 4A, 5A, 4B, and 5B are rejected, and the fact that they are rejected is indicated on the construction site or plant. Etc.

  According to this quality control method, it is possible to automate the quality control, and it is possible to save the management effort by the construction manager or the like.

  Further, in the host computer 1, concrete strength test dates, for example, a 1 week strength test date and a 4 week strength test date are stored, and on each test date, the plant communication device 2 and the field communication device 3 indicate the test date. There is also a way to be notified.

  According to this quality control method, it is possible to prevent a test from being forgotten.

  Further, there is a method in which an X-R control chart creation unit is built in the host computer 1 and each X-R control chart is created based on plant test character data and field test character data.

FIG. 5 is an example of an XR management chart (specifically, an X ^bar management chart and an R management chart) created by the host computer 1.

  In addition, by providing an electronic approval mechanism, it is possible to remotely witness the orderer or the like using the quality control method shown in the drawing.

  The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and there are design changes and the like without departing from the gist of the present invention. They are also included in the present invention.

  DESCRIPTION OF SYMBOLS 1 ... Host computer, 2 ... Plant communication apparatus, 3 ... On-site communication apparatus, 4A, 5A ... Plant test image data, 4B, 5B ... On-site test image data, 6 ... Test reference image data

Claims (5)

Send at least the concrete plant test image data to the host computer using the plant communicator in the plant,
Using a field communicator at the construction site, send at least concrete field test image data to the host computer,
A concrete quality control method for accessing the host computer from at least the plant and the construction site via the plant communication device and the site communication device and confirming test image data stored in the host computer. And
In the host computer, plant test reference image data that is a criterion for determining whether or not the test result is acceptable in the plant and / or field test reference image data that is a criterion for determining whether or not the test result is acceptable at the construction site are stored. And
A concrete quality control method for performing quality control of concrete by comparing test image data and test reference image data when accessing the host computer. Character data in the plant test image data of concrete is extracted as plant test character data by the plant communication device, the plant test character data is also transmitted to the host computer using the plant communication device,
The character data in the concrete field test image data is extracted as field test character data by the field communication device, and the field test character data is also transmitted to the host computer using the field communication device. Concrete quality control method.   In the host computer, the test image data and the test reference image data are automatically compared, and when it is determined that the test image data is unsuccessful, the plant communicator and / or the field communicator The concrete quality control method according to claim 1 or 2, wherein an alarm is notified. The concrete strength test date is stored in the host computer,
The quality control method for concrete according to any one of claims 1 to 3, wherein the plant communication device and the field communication device are notified of the strength test date on the strength test date.   The concrete quality control method according to any one of claims 2 to 4, wherein an X-R control chart is created based on the plant test character data and the field test character data in the host computer.

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