JP2016003456A - Method and system for estimating filled depth of crack repair material, and method for selecting crack repair material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and a system for estimating a filled depth of a crack repair material, as well as a method for selecting a crack repair material, capable of accurately estimating the filled depth of a repair material before repair work of cracks of diverse widths that could develop on a concrete structure, thus helping to select an optimum repair material in view of the filled depth.SOLUTION: A method for estimating a filled depth of a crack repair material comprises: a first step in which a crack of a prescribed width developed on a concrete structure is simulated by immersing a glass tube 1 having an inner diameter that equals the prescribed width into a tray 2 filled with a crack repair material m, and an infiltration height of the crack repair material m in the glass tube 1 is measured; and a second step in which a filled depth is estimated when the crack repair material m is filled into the crack of the prescribed width that developed on the concrete structure, on the basis of the measured infiltration height.

Description

  The present invention relates to a method and system for estimating the filling depth of a crack repair material for a crack of a predetermined width generated in a concrete structure, and a method for selecting a crack repair material using this method.

  As a repair method for a crack generated in a concrete structure, a method of applying an acrylic resin-based or epoxy resin-based crack repair material to the concrete surface and filling the inside of the crack is generally performed.

  The filling depth of the crack repair material for cracks generated in a concrete structure varies depending on various factors such as the crack width, the wet state of the concrete surface, the temperature during repair, the viscosity of the crack repair material, and the curing time.

  As for the most important matters such as whether or not the repair material is sufficiently filled in the crack, and to what extent the repair material is filled with respect to the depth of the crack, Little has been confirmed in the repair work. This relies on the fact that the filling depth of the repair material cannot be confirmed from the concrete surface.

  As a conventional confirmation method, for a crack in a concrete structure, there is a method in which a part of a portion filled with a repair material is cored and a filling state in the crack is visually confirmed.

  In this confirmation method, the crack depth for each crack width is, therefore, how much depth should be filled with the repair material, and the required quality of the repair material that satisfies this target filling depth. Important matters such as what cannot be predicted or selected before repair work.

  In addition, it takes time and effort to remove a part of the core of the structure that has been repaired, and it is also necessary to repair the core collection point.

  Here, in Patent Document 1, an adhesive or resin mortar mixed with a contrast agent is filled in a crack or the like of a structural material, and an electromagnetic radiation is irradiated to the filling portion to image a radiation image on the radiation film. Has disclosed a filling confirmation method for confirming the filling state of the filler.

  According to this method, it is possible to check the filling condition of the filler without collecting the core, but it is still impossible to predict the filling depth of the repair material for cracks of various widths before repairing. Of course, it is not possible to select a filler that satisfies the target filling depth. Furthermore, it cannot be denied that it takes time to irradiate electromagnetic radiation.

On the other hand, Patent Document 2 discloses a method for repairing or reinforcing a concrete structure having a cracked portion having a width of about 0.5 mm. Specifically, as the adhesive composition, a two-component type epoxy resin composition comprising a liquid A mainly composed of an epoxy resin main component and a liquid B mainly composed of a curing agent thereof is used. Is a clear composition, the viscosity of the composition after blending the two liquids is in the range of 100 to 2000 mPa · s / 20 ° C., and the ratio η ₅ / η ₅₀ between the viscosity at ₅ rpm and the viscosity at 50 rpm is Adhesiveness within the range of 1.1 to 2.0 and satisfying all requirements that the penetration depth from the lower surface to the gap is 15mm or more for the test specimens facing each other with a gap of 0.2mm The operation of applying the adhesive composition to the surface of the concrete structure using the composition is repeated once or as many times as necessary.

  Even with this method, it is not possible to predict the filling depth of the repair material for cracks of various widths before repairing, and it is naturally impossible to select a filling material that satisfies the target filling depth. In particular, with this technique, since the repair target is limited to cracks with a width of about 0.5 mm, it is not certain whether the repair method is effective for cracks with various widths.

JP 2010-133189 A JP 2002-121901 A

  The present invention has been made in view of the problems described above, and it is possible to accurately predict the filling depth of the repair material before repair work, even for cracks with various widths that may occur in a concrete structure. Accordingly, it is an object of the present invention to provide a method and system for estimating the filling depth of a crack repair material and a selection method for the crack repair material, which can be used for selecting an optimal repair material from the viewpoint of the filling depth.

  In order to achieve the above object, the method for estimating the filling depth of a crack repair material according to the present invention simulates a crack of a predetermined width generated in a concrete structure, and repairs a glass tube having the predetermined width as an inner diameter. The first step of measuring the penetration height of the crack repair material in the glass tube by immersing it in the tray containing the material, based on the measured penetration height, against the crack of a predetermined width generated in the concrete structure The filling depth of the crack repair material is estimated by the second step of estimating the filling depth when the crack repair material is filled.

  The method of the present invention uses a glass tube having an inner diameter that simulates a crack having a width that can occur in concrete, and measures the height at which the repair material accommodated in the tray penetrates into the glass tube by capillary force. The value is used to estimate the filling depth when an actual crack is filled with a repair material.

  Since there are various crack widths, for example, a total of 10 types of glass tubes can be prepared at intervals of 0.1 mm from 0.1 mm to 1.0 mm, and a total of 5 types of glass tubes can be prepared at intervals of 0.2 mm.

  Here, each of the plurality of glass tubes has a plurality of inner diameters and a small outer diameter is applied, so that the penetration height of the repair material can be visually recognized, and the glass protecting the glass tubes It is preferably surrounded by a protective material made of plastic or plastic.

  In addition, trays of various shapes and materials that can accommodate repair materials can be applied.

  There are various types of repair materials, but low-viscosity acrylic and epoxy resin materials with good crack penetration can be used. Even with various resin materials, the penetration depth changes by using materials having different viscosities and curing times.

  The repair materials of various materials are accommodated in a tray. For example, the ten kinds of glass tubes are erected on the tray, and the penetration height of the repair material in each glass tube is measured.

  The filling depth of the crack repair material is estimated based on the measured penetration height in each glass tube for each of the plural types of repair materials. In this estimation method, an administrator may perform an operation of multiplying a measured value by a predetermined multiplier to determine an estimated value, or may be calculated by an automatic operation using an estimation device (computer). .

  In the calculation method described above, the correlation between the measured value and the estimated value is specified by an experiment, and the estimated value is calculated based on both of the specified correlations.

  Moreover, it is preferable to perform the first step under the same temperature condition as the temperature assumed when the crack repair material is filled with respect to the crack having a predetermined width generated in the concrete structure.

  Furthermore, the present invention extends to a method for selecting a crack repair material, and this selection method estimates the filling depth of each of the plurality of crack repair materials by any one of the above methods, and sets the target filling depth. The repair material that satisfies the requirements is selected.

  The target filling depth is determined in consideration of various factors such as the external environment where the concrete structure is placed (such as an area along the sea) and the service life required for the concrete structure.

  By selecting a repair material whose estimated filling depth satisfies the target value, it is possible to guarantee the performance guarantee of the concrete structure after crack repair with high accuracy.

  The present invention also extends to a system for estimating the filling depth of a crack repair material, which simulates a crack of a predetermined width generated in a concrete structure and repairs the crack against the simulated crack. Measure the filling depth of the crack repair material when filling the material, and based on the measured filling depth, the filling when the crack repair material is filled to the crack of a predetermined width generated in the concrete structure This is a system for estimating the depth of filling of crack repairing material, in which a glass tube having the predetermined width as the inner diameter and the crack repairing material are accommodated, and the glass tube immerses its opening in the crack repairing material. When a crack repair material is filled against a crack of a specific width generated in a concrete structure, based on the tray standing in the state of being removed and the measured penetration height of the crack repair material An estimation device for estimating a filling depth, and the estimation device stores an input unit for inputting the measured crack repair material penetration height, and a correction coefficient to be multiplied with the penetration height. Multiplying the penetration height input to the storage unit and the input unit and the correction coefficient stored in the storage unit to estimate the filling depth when a crack repair material is filled into a crack of a predetermined width generated in a concrete structure A calculation unit for calculating a value.

  In this system, the correction coefficient stored in the storage unit is the measured value (the first measured value) regarding the penetration depth of the repair material in the glass tube specified in the experiment, and the actual concrete structure or concrete supply. It is obtained from the correlation with the measured value (referred to as the second measured value) in the specimen. Regarding this correlation, the correlation value may vary depending on the crack width, the inner diameter of the tube, and the viscosity. For example, when a specific type of repair material is used, the ratio of the first measurement value to the second measurement value when the crack width or the inner diameter of the tube is 0.2 mm is specified as 0.7, and the inner diameter is changed to 0.6 mm. The ratio between the first measured value and the second measured value is specified as 0.9.

  Also, by changing the viscosity of a specific type of repair material, for example, when the crack width or the inner diameter of the pipe is set to 0.2 mm, the ratio between the first measured value and the second measured value when the viscosity is 200 mPa · s. Is specified as 0.7, and the ratio when the viscosity is 600 mPa · s is specified as 0.8. Therefore, use the correlation ratio (correction coefficient) corresponding to the width of each crack to be repaired, and correct it for the penetration depth of the repair material of a specific type (and a specific viscosity) when using a glass tube. A coefficient (for example, 0.7) is multiplied by the calculation unit to calculate an estimated value.

  In addition, a preferred embodiment of the system according to the present invention is a temperature control device that forms a temperature condition identical to a temperature assumed when a crack repair material is filled with respect to a crack having a predetermined width generated in a concrete structure. Furthermore, it is equipped.

  For example, when the system is placed in a laboratory and the filling height of the repair material is estimated, the air conditioning equipment in the laboratory is the temperature control device described above.

  When crack repair is scheduled to be performed in an environment with an external temperature of 20 ° C from the weather forecast, by conducting an experiment to penetrate the repair material into the glass tube with the temperature set at the same temperature of 20 ° C in the laboratory, It is possible to simulate crack repair according to the actual environment, and to estimate the filling height with higher accuracy.

  As can be understood from the above description, according to the method and system for estimating the filling depth of the crack repair material of the present invention and the method for selecting the crack repair material, cracks of various widths that can occur in a concrete structure can be obtained. Thus, the filling depth of the repair material can be accurately predicted before the repair work. Therefore, it is possible to select an optimal repair material that can satisfy the target filling depth for each crack width.

It is the schematic diagram which showed the system which estimates the filling depth of the crack repair material of this invention. It is the block diagram which showed the internal structure of the estimation apparatus. (A), (b) is a photograph figure of the experiment condition which used the system of this invention together. It is the graph which showed the experimental result regarding the internal diameter of a glass tube, and the penetration height of a liquid level. (A), (b) is a photograph figure of the mortar block which comprises the crack used for experiment. It is the figure which showed the experimental result which measures the filling depth at the time of filling various repair materials on the crack surface of a mortar block. It is the figure which showed the experimental result which measures the filling depth at the time of filling various repair materials in the cut surface of a mortar block. It is the figure which showed the experimental result which measures the filling depth at the time of filling each filler into the crack surface of a glass tube, a mortar block, and the cut surface of a mortar block, respectively. It is the figure which showed the experimental result regarding the relationship between the crack width and the internal diameter of a glass tube, and the ratio of the filling depth to the crack of the mortar block with respect to the penetration height in a glass tube. It is the figure which showed the experimental result regarding the relationship between the viscosity of a filler, and the ratio of the filling depth to the crack of a mortar block with respect to the penetration height in a glass tube.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a system and method for estimating the filling depth of a crack repair material and a method for selecting a crack repair material according to the present invention will be described below with reference to the drawings.

(Embodiment of System and Method for Estimating Filling Depth of Crack Repair Material, and Method for Selecting Crack Repair Material)
FIG. 1 is a schematic diagram showing a system for estimating the filling depth of a crack repair material of the present invention, and FIG. 2 is a block diagram showing the internal configuration of the estimation device.

  The system 10 shown in the figure accommodates a plurality of glass tubes 1A, 1B, 1C, 1D, and 1E having different inner diameters and a crack repair material m, and the glass tube 1 is erected with its opening immersed in the crack repair material m. And an estimation device 3 for estimating the filling depth when the crack repair material is filled with respect to a crack having a predetermined width generated in the concrete structure from the measured penetration height of the crack repair material m, The temperature control device 4 is generally configured.

  The glass tubes 1A, 1B, 1C, 1D, and 1E have inner diameters of 0.1 mm, 0.3 mm, 0.6 mm, 0.9 mm, 1.0 mm, and the like, respectively. Of course, glass tubes having other inner diameters may be further added. The inner diameter of each glass tube 1 simulates the crack width generated in the concrete structure.

  Since the glass tube 1 is a thin tube, it is preferable that a protective material (not shown) having a transparent color that allows the liquid level in the tube to be visually recognized from the outside is disposed around the glass tube 1.

  A plurality of types of repair material m are accommodated in the tray 2, and the administrator measures the penetration height when the repair material m penetrates the inside of the glass tube 1 and inputs it to the input unit of the estimation device 3. An imaging device such as a CCD camera is provided on the side of the glass tube 1, the penetration height of the repair material m is photographed by the imaging device, and the photographing data is transmitted to the input unit of the estimation device 3 and automatically inputted. A system may be constructed.

  As shown in FIG. 2, the estimation device 3 includes an input unit for inputting the measured penetration height of the crack repair material m, a storage unit for storing a correction coefficient to be multiplied for the penetration height, and an input unit. Multiplying the penetration height input to the storage unit and the correction coefficient stored in the storage unit, and calculating the estimated value of the filling depth when a crack repair material is filled for a crack of a specified width generated in the concrete structure The CPU for controlling these units, the RAM, and the ROM are connected to each other via a bus.

  The temperature control device 4 is a device for forming a temperature condition identical to the temperature assumed when the crack repair material m is filled with respect to a crack having a predetermined width generated in a concrete structure. When the filling depth of the repair material m is estimated in the room, the air conditioner mounted in the laboratory becomes the temperature control device 4. The outside temperature of the work day for actually repairing cracks in the concrete structure is specified from the weather forecast, etc., the temperature in the laboratory is set according to this outside temperature, and the repair material for each glass tube 1 By measuring the penetration height of m, it is possible to increase the estimation accuracy of the filling depth of the repair material m.

  Here, although there are various kinds of repair materials m, low-viscosity acrylic or epoxy resin materials having good penetration into cracks can be applied. It should be noted that due to the difference in the type of repair material, or even the same type of repair material, the composition of the ingredients is different, so that the viscosity and curing time are different, and the viscosity and the curing time are the penetration height of the repair material, that is, the concrete It affects the filling depth into the cracks in the structure. Therefore, it is preferable to measure the penetration height with respect to various types of repair materials using the glass tube 1 having different inner diameters and to input the measurement result to the estimation device 3.

  The correction coefficient stored in the storage unit is the measured value (the first measured value) relating to the penetration height of the repair material m in the glass tube 1 specified in the experiment, and the actual concrete structure or concrete specimen. It is calculated | required from the correlation with the measured value in (it is set as 2nd measured value).

  Regarding this correlation, the correlation value can be changed not only by the crack width or the inner diameter of the glass tube 1 but also by the viscosity of the repair material m as described above. For example, when a specific type of repair material m is used, the ratio of the first measured value and the second measured value of 10 cases in 0.1 mm intervals from the crack width or the inner diameter of the glass tube 1 to 0.1 mm to 1.0 mm, respectively. These are specified and stored in the storage unit as correction coefficients.

  In the actual repair of cracks in concrete structures, a correction factor corresponding to the width of each crack to be repaired is indexed from the storage unit, and a specific type (and a specific viscosity) of repair material m when glass tube 1 is used. The calculation factor is multiplied by the correction factor (for example, correction factor 0.7 for crack width 0.1 mm, correction factor 0.8 for crack width 0.5 mm, etc.) A highly accurate estimated value is calculated.

  For example, if there are four types of cracks of 0.1 mm, 0.3 mm, 0.5 mm, and 0.9 mm in an actual concrete structure, multiple types of repair materials using these four types of inner diameter glass tubes 1 The penetration height of m is measured, and the measurement result is input to the input unit of the estimation device 3.

  For each type of repair material m, the correction coefficient when the glass tube 1 of each inner diameter is used is stored in the storage unit. Therefore, when the measured value is input to the input unit, the various repair material m The filling depth when using is calculated and displayed on the screen of the estimation device 3 (computer).

  On the other hand, a target value for the filling depth is set for each crack width. This target value is determined in consideration of various factors such as the external environment where the concrete structure is placed and the service life required for the concrete structure. For cracks of 0.3 mm, 3 cm can be set as the target filling depth.

  With respect to various repair materials m, the filling depth for each crack width (inner diameter of the glass tube 1) is displayed on the screen of the estimation device 3 (computer), and the repair material m satisfying the target value is selected and displayed.

  If this series of flows is described as an estimation method, it will be a method comprising the first and second steps. In other words, a crack having a predetermined width generated in a concrete structure is simulated, and the glass tube 1 having an inner diameter of the predetermined width is immersed in a tray 2 that accommodates the crack repair material m, and the crack repair material m in the glass tube 1 is immersed. The first step of measuring the penetration depth is a first step of estimating the filling depth when the crack repair material m is filled with respect to a crack having a predetermined width generated in the concrete structure based on the measured penetration height. This method consists of two steps.

  And the selection method of a crack repair material estimates the filling depth of each of several crack repair materials by the method which consists of this 1st, 2nd step, and selects the repair material which satisfy | fills the target filling depth. Is.

  In this way, by applying the illustrated system 10 or applying the method of the present invention, the filling depth of the repair material m before repair work for cracks of various widths that may occur in the concrete structure. Therefore, it is possible to select an optimal repair material that can satisfy the target filling depth for each crack width.

(Experiments using glass tubes and their results)
The inventors of the present invention used a plurality of glass tubes with different inner diameters, measured the permeation height of the repair material when various repair materials were applied, and conducted an experiment for comparison with the results when water was permeated. It was.

No.1: 超低粘度型注入補修用エポキシ樹脂 ボンドE205（コニシ(株)）
No.2: 低粘度型アクリル樹脂 スーパーJ_D（成和リニューアルワークス(株)）
No.3: 低粘度型エポキシ樹脂 ボンドE206S（コニシ(株)） <Experimental conditions>
The experimental conditions are shown in Table 1 below.

No.1: Ultra low viscosity injection repair epoxy resin Bond E205 (Konishi Co., Ltd.)
No.2: Low viscosity acrylic resin Super J _D (Nariwa Renewal Works Co., Ltd.)
No.3: Low viscosity epoxy resin Bond E206S (Konishi Co., Ltd.)

  The experiment was conducted in a room at 20 ° C-80% RH. A glass tube was set up on the liquid surface and allowed to stand for about 18 hours, and then the penetration height from the liquid surface was measured. The same experiment was conducted for water (tap water). Two experiments were performed under each condition.

<Experimental result>
FIGS. 3 (a) and 3 (b) are both photographic views of the experimental situation using the system of the present invention, and FIG. 4 is a graph showing experimental results relating to the inner diameter of the glass tube and the penetration height of the liquid surface.

  In Fig. 4, water (theoretical value) is the value calculated as the surface tension of water: 0.07288 N / m, the contact angle between water and glass: 20 degrees, and the broken line is the value of "water (theoretical value) x 0.43" Show. The experimental results are average values of the two measurement results. The penetration height h can be calculated by h = (2 · T · cos θ) / (ρ · g · r) (T: surface tension, θ: contact angle, r: inner diameter, ρ: liquid density). it can.

  From the figure, it was found that the measurement result of water almost agrees with the theoretical value. Further, when the inner diameter was 0.3 mm or more, a difference depending on the type of repair material could not be confirmed. Therefore, in this range, it can be determined that the capillary force is small and the influence of the type of repair material is small.

  In addition, the No. 1 bond E205 was about 0.43 times the value of water (theoretical value) regardless of the inner diameter. From this, it can be inferred that the capillary force acting on the repair material is determined by the inner diameter, and that the magnitude can be understood by considering the correction factors relating to the surface tension and the contact angle with respect to water.

Furthermore, the No. 2 super J _D and the No. 3 bond E206S were smaller than the No. 1 bond E205 when the inner diameters were 0.13 mm and 0.20 mm. In addition, it has been confirmed that as the inner diameter becomes smaller, the rising speed tends to be slower, and in the case of a material having a short working time, the curing proceeds before reaching the height that rises at the initial viscosity immediately after mixing. Can be guessed. Further, it can be inferred that as the viscosity increases, the ascending speed becomes slower and the value becomes smaller.

(Experiment using mortar block and its result)
The present inventors further left a mortar block having a crack surface and a cut surface of a certain width on the repair material to clarify the relationship between the wet state of the surface and the filling property of the repair material, and its penetration Height was measured. Here, both FIG. 5 (a), (b) is a photograph figure of the mortar block which has the crack used for experiment.

条件1: 105℃の乾燥炉
条件2: 20℃-60%RH(低温)
条件3: 20℃-80%RH(高温)
条件4: 20℃-水中で24時間 <Experimental conditions>
The experimental conditions are shown in Table 2 below.

Condition 1: 105 ° C drying furnace Condition 2: 20 ° C-60% RH (low temperature)
Condition 3: 20 ℃ -80% RH (high temperature)
Condition 4: 20 ° C-24 hours in water

  The experiment was conducted in a room at 20 ° C-80% RH. After 24 hours or more after standing, the specimen was cut, and the height (filling depth) from the bottom surface (injection surface) was measured. In addition, one experiment was conducted for each condition. Moreover, the moisture content was measured from the weight change before and behind drying using the test body of the same conditions as conditions 1-4.

<Experiment result 1>
As a result of measuring the moisture content, it was 0% in condition 1, 5.7% in condition 2, 5.7% in condition 3, and 9.5% in condition 4 (both average values of the measurement results for 4 times).

  Although there was no difference in water content between condition 2 (low humidity) and condition 3 (high humidity), it was found that there was a difference in water content between conditions 1 and 2, 3 and 4.

<Experiment result 2>
Next, for each of the four conditions shown in Table 2, the filling depth when various repair materials were applied to the cracked surface of the mortar block and the filling depth when applied to the cut surface of the mortar block were measured. The results are shown in FIGS. Also, the filling depth (penetration height) when various repair materials were applied to the glass tube, the filling depth when applied to the crack surface and cut surface of the mortar block were measured, and the results are shown in FIG. Show. In addition, in FIG. 8, the experimental result in the condition 3 is shown regarding the crack surface and the cut surface.

  From each figure, in all cases, the filling depth was relatively large in the case of Condition 1, but there was almost no difference due to the amount of water. In addition, the filling depth is small in the case of a crack width of 0.1 mm, which is presumed to be due to the fact that the reaction progressed during the rise and the viscosity increased rapidly as in the experiment with the glass tube. Moreover, there was almost no difference between the cracked surface and the cut surface.

  Furthermore, the experimental results regarding the relationship between the crack width and the inner diameter of the glass tube and the ratio of the filling depth to the crack of the mortar block with respect to the penetration height in the glass tube are shown in FIG. The experimental result regarding the relationship of the ratio of the filling depth to the crack of the mortar block with respect to height is shown in FIG.

  From both figures, it can be confirmed that there is a correlation between the penetration depth in the glass tube and the filling depth to the crack of the mortar block, and the correlation ratio changes with the change of crack width (or glass tube inner diameter), It was confirmed that the interphase ratio also changed depending on the viscosity.

  From this result, by conducting a simple test using a glass tube, it is possible to estimate the depth at which the repair material penetrates into the cracks of the actual concrete structure by capillary force. Then, based on the identified correlation, the correction coefficient described above can be specified for each repair material type by the inner diameter and viscosity of the glass tube, and the repair material for cracks of a predetermined width of an actual concrete structure with high accuracy. It becomes possible to estimate the filling depth. Further, this makes it possible to select a repair material that satisfies the target filling depth for the crack of the predetermined width, and to ensure quality by crack repair.

  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.

  1, 1A, 1B, 1C, 1D, 1E ... glass tube, 2 ... tray, 3 ... estimation device (computer), 4 ... temperature control device, 10 ... system (system for estimating the filling depth of crack repair material), m ... Crack repair material (repair material)

Claims (6)

Simulates a crack of a predetermined width generated in a concrete structure, immerses a glass tube having the predetermined width as an inner diameter in a tray containing a crack repair material, and measures the penetration height of the crack repair material in the glass tube 1 step,
Crack repair material filling depth comprising a second step of estimating the filling depth when a crack repair material is filled for a crack of a predetermined width generated in a concrete structure based on the measured penetration height How to estimate the height.   In the second step, the measured value measured in the first step is multiplied by a correction factor, and the estimated depth of filling when a crack repair material is filled into a crack of a predetermined width generated in the concrete structure. The method of estimating the filling depth of the crack repairing material according to claim 1.   The crack repair according to claim 1 or 2, wherein, in the first step, a crack condition having the same temperature as that assumed when the crack repair material is filled is formed for a crack having a predetermined width generated in the concrete structure. A method for estimating the filling depth of a material.   A method for selecting a crack repair material, wherein the filling depth of each of the plurality of crack repair materials is estimated by the method according to any one of claims 1 to 3 and a repair material that satisfies a target filling depth is selected. Simulate a crack of a certain width generated in a concrete structure, measure the filling depth of the crack repair material when filling the crack repair material to the simulated crack, and based on the measured filling depth A system for estimating the filling depth of a crack repair material, estimating the filling depth when a crack repair material is filled for a crack of a predetermined width generated in a concrete structure,
A glass tube having an inner diameter of the predetermined width;
A tray that is installed in a state where the crack repair material is accommodated and the glass tube is immersed in the crack repair material,
From the measured penetration height of the crack repair material, the estimation device for estimating the filling depth when the crack repair material is filled with respect to the crack of a predetermined width generated in the concrete structure,
The estimation device includes:
Input section where the penetration height of the measured crack repair material is input,
A storage unit storing a correction coefficient to be multiplied with respect to the penetration height;
Multiply the penetration height entered in the input section and the correction coefficient stored in the storage section to calculate the estimated value of the filling depth when a crack repair material is filled into a crack of a specified width generated in the concrete structure. A system for estimating a filling depth of a crack repair material.   The crack repair according to claim 5, further comprising a temperature control device that forms a temperature condition identical to a temperature assumed when a crack repair material is filled for a crack having a predetermined width generated in a concrete structure. A system that estimates the filling depth of materials.

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