JP2014021010A - Filling detection apparatus for detecting filling of filling hardener, and method for checking filling - Google Patents

Abstract

PROBLEM TO BE SOLVED: To detect a filling state of a filling hardener with a simple method, when filling a filling space with the filling hardener.SOLUTION: A filling detection apparatus according to the present invention for detecting that a filling hardener having flowability during construction has been filled in a filling space comprises: contact detection means whose state is changed by contact with grout; and a long insertion member (base plate 111) provided with the contact detection means and inserted from outer space into the filling space. The contact detection means includes: a power source 121 for outputting a specified voltage; an electrode pair 112b disposed in a filling space; a detection resistance 122 determined to have a detection resistance value that is larger by a predetermined level or more than a conduction resistance value of when the grout has the electrode pair conducted; a wiring member 133 for connecting the power source 121, the electrode pair 112b, and the detection resistance 122 in series; and a detection operation part (LED 123) that operates corresponding to a voltage between terminals of the detection resistance.

Description

  The present invention uses a filling detection device that detects from the outside the filling state of a filling hardened material (such as grout) that has fluidity during construction, such as cement, mortar, and concrete, and the filling detection device. The present invention relates to a filling confirmation method.

  When constructing a structure or filling a gap between members to be joined, a filling hardened material is filled in a filling space defined by a mold or the like. Here, since wood or steel plate is used for the mold, it is difficult to visually check the filling state from the outside. For this reason, in the past, while filling a large amount of filling hardened material into the filling space, excess hardening material is discharged from the filling space, and the completion of filling is determined based on the fact that no bubbles are contained in the discharged hardening material. doing. In this method, the curing material had to be filled uselessly.

  In the technique of Patent Document 1, a water-soluble insulating sheet to which electrodes and lead wires are attached is disposed in a concrete formwork, and the continuity of the electrodes due to the placed concrete is detected by an ohmmeter or LED, thereby filling The situation is recognized from the outside. Further, in the technique of Patent Document 2, a resistance circuit in which high resistance elements of 30 KΩ to 68 KΩ are connected in series is fixed in a mold, and the filling state is externally determined based on the current of the resistance circuit that changes as the driving progresses. Has been made to recognize. It is considered that wasteful consumption of the curing material can be suppressed by using the techniques of these patent documents.

Japanese Patent No. 2744400 Japanese Patent No. 2740438

  However, each of the techniques in each of the patent documents requires preparation such as mounting the sensor in the filling space in advance. For this reason, there has been a demand for an apparatus that can easily detect filling in the field.

  This invention is made | formed in view of such a situation, The objective is to detect the filling state of filling hardening material by a simple method.

  In order to achieve the above object, the present invention is a filling detection device for detecting that a filling hardened material having fluidity is filled in a filling space at the time of construction, and the state is changed by contact with the filling hardened material. It has a contact detection means and a long insertion member provided with the contact detection means and inserted from an external space into the filling space.

  According to the present invention, the contact detection means is provided in the insertion member, and the insertion member is configured to be insertable into the filling space. Therefore, when the insertion member is inserted into the filling space, the filling hardening material in the contact detection means The state of the part that is in contact with the terminal changes, and the state of the part that is not in contact does not change. And since the part which is not in contact with filling hardening material can be handled as the part which is in contact with air, the presence or absence of air can be detected based on the state change of a contact detection means. Therefore, it is possible to detect the filling state of the filling hardened material by a simple operation of inserting the insertion member into the filling space.

  In the above-described filling detection device, it is preferable that the insertion member is made of a strip-shaped thin plate having flexibility. In this configuration, even if the insertion member is inserted into or removed from the filling space, the filled hardened material is not easily damaged.

  In the above-described filling detection device, the filling hardening material has fluidity and conductivity during construction, and the contact detection means includes a power source that outputs a specified voltage, and an electrode pair that is disposed in the filling space. A detection resistance set to a detection resistance value greater than a predetermined degree greater than a conduction resistance value when the filling hardener conducts the electrode pair, and the power source, the electrode pair, and the detection resistance. It is preferable to have a wiring member connected in series and a detection operation unit that operates according to the voltage across the terminals of the detection resistor. The predetermined degree means a size that can absorb variations in conduction resistance values. In this configuration, since the detection resistance value of the detection resistor is set to be greater than the conduction resistance value by a predetermined degree or more, variations in the conduction resistance value can be absorbed. For example, when the electrode pair is in a non-conductive state, the positive terminal of the detection resistor is at the ground potential, and when the electrode pair is in a conductive state, the potential of the positive terminal is a predetermined potential that is sufficiently higher than the ground potential and has little variation. In this way, since the potential of the positive terminal can be clearly distinguished according to the filling state of the filling hardener, the filling operation of the filling hardener can be accurately performed by operating the detection operation unit according to the potential of the positive terminal. It can be detected well.

  Further, according to the present invention, an insertion member included in the filling detection device according to claim 1 is inserted into a filling space filled with a filling hardening material having fluidity during construction through an insertion portion provided in a mold. The filling and curing material filling confirmation method is characterized by confirming whether or not the filling and hardening material filled in the filling space has been contacted by a contact detection means included in the filling detection device. According to the present invention, the filling state of the filling and hardening material can be confirmed by a simple operation of extracting the insertion member inserted into the filling space.

  In the above-described filling confirmation method, the filling space is preferably a space formed between the column member and the joint portion when the precast concrete column member is joined to the joint portion. If it does in this way, about the junction part of precast concrete, the filling condition of the hardening | curing material can be confirmed by simple operation.

  According to the present invention, it is possible to detect the filling state of the filling hardened material into the filling space by a simple method.

It is a figure explaining the filling detection apparatus of 1st Embodiment, (a) is a front view, (b) is a side view. It is explanatory drawing of an electrode pair, (a) is a top view, (b) is sectional drawing, (c) is explanatory drawing of a conduction | electrical_connection state. It is a figure explaining the junction part of precast concrete. It is a figure explaining the state which attached the formwork. (A) is a figure explaining the insertion part provided in a formwork, (b) is a figure explaining the state which inserted the insertion member in the filling space. It is explanatory drawing of a grout filling operation | work and is a figure explaining the state filled with grout. It is explanatory drawing of a grout filling operation | work and is a figure explaining the state which inserted the insertion member in the lower side filling space. It is explanatory drawing of a grout filling operation | work and is a figure explaining the state which inserted the insertion member in the upper side filling space. It is a figure explaining the filling detection apparatus of 2nd Embodiment, (a) is a front view, (b) is a figure explaining the time-dependent change of a measurement voltage. It is a figure explaining the filling detection apparatus of 3rd Embodiment.

  Hereinafter, embodiments of the present invention will be described. As shown in FIG. 1, the filling detection device 10 of the first embodiment has a sensor plate part 11 and a main body part 12. The sensor plate part 11 is a part for detecting whether or not the grout is filled, and is inserted into or removed from the filling space filled with the grout. The main body portion 12 is a portion that is provided at the base portion of the sensor plate portion 11 and operates according to an electrical signal from the sensor portion. In the present embodiment, the sensor plate portion 11 and the main body portion 12 correspond to contact detection means.

  First, the sensor plate part 11 will be described. The sensor plate part 11 includes a base plate 111, a slit electrode 112, and a wiring member 113.

  The base plate 111 corresponds to an insertion member. In this embodiment, the base plate 111 is constituted by a member obtained by processing a strip-like thin plate having flexibility, specifically, a thin plate made of synthetic resin having electrical insulation into a long rectangular shape. Has been. Then, six slit electrodes 112 including the first slit electrode 112A to the sixth slit electrode 112F are provided on one surface of the base plate 111. Further, wiring members 113 (113A to 113G) are electrically connected between the slit electrodes 112A to 112F.

  As shown in FIGS. 2A and 2B, each of the slit electrodes 112A to 112F has an insulating plate 112a and an electrode pair 112b. The insulating plate 112a is a plate-like member having electrical insulation, and is made of a resin plate piece having a rectangular shape of 5 mm × 10 mm and a thickness of 0.5 mm in this embodiment. The electrode pair 112b includes a pair of conductive metal terminals 112c and 112d. The metal terminals 112c and 112d of the present embodiment are made of a 2 mm × 10 mm strip copper thin film. In this example, a 1 mm slit (gap) is provided between the metal terminals 112c and 112d.

  These metal terminals 112c and 112d are formed on the one side surface of the insulating plate 112a with an interval in the short side direction. And as shown in FIG.2 (c), when the one side surface of the slit electrode 112 is covered with grout GR of the fresh state (the state which has the fluidity | liquidity after kneading), grout GR will have electroconductivity. Therefore, the electrode pair 112b is conducted. Although errors occur due to the type of grout GR, water cement ratio, galvanic action, moisture content (dryness), etc., the conduction resistance value of the grout GR when each electrode pair 112b is conducted should be about several kΩ. Is known through experiments.

  The wiring member 113 is a member for electrically connecting the slit electrode 112, and is constituted by a covered electric wire. 1 and FIG. 2A, one end of the wiring member 113 is joined to one metal terminal 112c of a certain slit electrode 112, and the other end is joined to one side of the other slit electrode 112. It is joined to the metal terminal 112d. That is, the slit electrodes 112A to 112F are connected in series. The wiring member 113 is also connected to slit electrodes 112A and 112F at both ends connected in series.

  Specifically, referring to the embodiment of FIG. 1, one end of the first wiring member 113A is soldered to one metal terminal 112c of the first slit electrode 112A, and the second wiring member 113B is soldered to the other metal terminal 112d. One end is soldered. Note that the other end of the first wiring member 113A is electrically connected to the main body 12. The other end of the second wiring member 113B is soldered to one metal terminal 112c of the second slit electrode 112B, and one end of the third wiring member 113C is soldered to the other metal terminal 112d. Similarly, the third slit electrode 112C to the fifth slit electrode 112E are electrically connected by the third wiring member 113C to the sixth wiring member 113F. The other end of the sixth wiring member 113F is soldered to one metal terminal 112d of the sixth slit electrode 112F, and one end of the seventh wiring member 113G is soldered to the other metal terminal 112d. The other end of the seventh wiring member 113G is electrically connected to the main body 12 in the same manner as the tip of the first wiring member 113A.

  Next, the main body 12 will be described. As shown in FIG. 1, the main body 12 includes a power source 121, a detection resistor 122, an LED 123, and a switch 124. The positive electrode of the power source 121 is connected to the other end of the first wiring member 113A. One terminal (positive terminal) of the detection resistor 122 is connected to the other end of the seventh wiring member 113G. Further, the cathode of the LED 123 is connected to the positive electrode of the power source 121, and a switch 124 is provided between the other terminal (negative terminal) of the detection resistor 122 and the anode of the LED 123.

  As the power source 121, a power source capable of outputting a specified voltage is used. A battery having an output voltage of 5V is used for the power source 121 of the present embodiment. The detection resistor 122 is an element for detecting an electrical change in the sensor plate portion 11, and its resistance value (detection resistance value) is determined to be about 10 to 10,000 times the conduction resistance value. As described above, since the conduction resistance value of the grout GR is about several kΩ, the detection resistance value is set to 10 kΩ to several tens of MΩ. Thus, since the detection resistance value is set to be larger than the conduction resistance value by a predetermined degree or more, when the switch 124 is connected in a state where the electrode pair 112b of each of the slit electrodes 112A to 112F is conducted by the grout GR, the detection resistance 122 is obtained. The potential of the positive terminal of the power supply is close to the potential of the power supply 121.

  The LED 123 emits light according to the potential of the positive terminal of the detection resistor 122. That is, the LED 123 emits light when the switch 124 is turned on when the positive terminal of the detection resistor 122 is at a high potential (close to the potential of the power supply 121). On the other hand, when the positive terminal of the detection resistor 122 is at a low potential (at ground potential), no light is emitted even if the switch 124 is turned on. The LED 123 that performs such an operation corresponds to a detection operation unit that operates according to the potential of the positive terminal provided in the detection resistor 122.

  The switch 124 electrically connects or disconnects the detection resistor 122 and the LED 123. When the switch 124 is turned on, the detection resistor 122, the LED 123, and the power source 121 are connected in series. Note that the switch 124 may be any type as long as it can be turned on and off.

  Next, a grout GR filling detection method using the filling detection apparatus 10 will be described. Here, description will be given by taking as an example the joining of the precast concrete member (PCa member) shown in FIG. The PCa member includes a joint member 21, a left beam member 22, a right beam member 23, an upper column member 24, and a lower column member 25. An upper joint portion 26 is provided between the lower surface of the upper column member 24 and the upper surface of the joint member 21, and a lower joint portion 27 is provided between the upper surface of the lower column member 25 and the lower surface of the joint member 21. .

  As shown in FIG. 4, when connecting the upper column member 24 and the lower column member 25, a reinforcing bar 24 a protruding downward from the lower surface of the upper column member 24 is connected to a reinforcing bar through hole provided in the joint member 21. 21a is inserted. In addition, the lower end side portion of the reinforcing bar 24 a protruding downward from the lower surface of the joint member 21 is inserted into the reinforcing bar joint portion 25 a provided on the upper surface of the lower column member 25. At that time, a slight space is formed between the lower surface of the upper column member 24 and the upper surface of the joint member 21, and this space is filled with the grout GR to form the lower joint portion 27. Similarly, a slight space is also formed between the upper surface of the lower column member 25 and the lower surface of the joint member 21, and this space is filled with the grout GR to form the lower joint portion 27.

  Therefore, the upper space corresponding to the lower joint portion 27 and the lower space corresponding to the lower joint portion 27 correspond to filling spaces filled with the grout GR, respectively. And the sensor board part 11 of the filling detection apparatus 10 is inserted in these filling spaces. Further, in order to densely fill the grout GR with these filling spaces, the lower column member 25 is provided with a grout GR injection path 25b, and the upper column member 24 is provided with a grout GR discharge path 24b. . In this configuration, the grout GR is filled in order from the lower space while discharging air from the discharge path 24b.

  When the members such as the joint member 21 are assembled, the mold 31 is installed to fill the grout GR. Here, the mold 31 of the present embodiment is provided with an insertion portion 32 for allowing the sensor plate portion 11 to be inserted. For example, as shown in FIG. 5A, the insertion portion 32 includes three flexible valve bodies 32a and a ring-shaped frame body 32b to which these valve bodies 32a are attached. And the three valve bodies 32a are attached in the state which overlapped so that it might become convex at the filling space side. As shown in FIG. 5B, the insertion portion 32 allows the sensor plate portion 11 to be inserted from the outside by the valve body 32a being pushed and spread. Further, the outflow of the grout GR filled in the filling space to the outside is prevented by these valve bodies 32a.

  If the formwork 31 is installed, it is filled with grout GR. As described above, the grout GR is filled through the injection path 25 b provided in the lower column member 25. If a specified amount of grout GR is filled in each filling space, for example, as shown in FIG. 6, if the discharge path 24b provided in the upper column member 24 is filled with grout GR, injection of grout GR is stopped. To do. And the filling state of grout GR is confirmed.

  The filling of the grout GR is confirmed by inserting the sensor plate portion 11 into the filling space and energizing each of the slit electrodes 112A to 112F. For example, when checking the filling of the lower space, as shown in FIG. 7, the sensor plate portion 11 is inserted into the lower filling space through the insertion portion 32 of the mold 31 that defines the lower filling space. In that case, the sensor board part 11 is inserted so that each slit electrode 112A-112F may face downward. Further, the sensor plate portion 11 is inserted slightly upward so that the sensor plate portion 11 is inserted along the lower surface of the joint member 21. When fully inserted, the tip end portion of the sensor plate portion 11 is positioned at the center in the surface direction of the joint member 21. In this state, the switch 124 of the main body 12 is turned on. Similarly, when performing the filling confirmation for the upper space, as shown in FIG. 8, the sensor plate portion 11 is inserted into the upper filling space through the insertion portion 32 of the mold 31 that defines the upper filling space, and the main body portion. Twelve switches 124 are turned on.

  Here, when the grout GR is densely filled in each filling space, the slit electrodes 112A to 112F are electrically connected by the grout GR having conductivity. Here, as described above, the detection resistance value of the detection resistor 122 included in the main body 12 is set to be larger than the conduction resistance value by the grout GR by a predetermined degree or more. For this reason, even if the grout GR acts as an electrical resistance, the potential appearing at the positive terminal of the detection resistor 122 is close to the power supply potential. In this embodiment, since the power supply 121 with an output voltage of 5V is used, the potential of the positive terminal of the detection resistor 122 is also 5V. The potential of the positive terminal can be set to a substantially constant value even if the conduction resistance value varies. That is, variations in conduction resistance values can be absorbed.

  On the other hand, when any one of the plurality of slit electrodes 112A to 112F is not in contact with the grout GR, in other words, when the slit electrode 112 is disposed at the position of the air pocket, the slit electrode 112 is electrically (The resistance value becomes infinite). Then, the potential appearing at the positive terminal of the detection resistor 122 becomes the ground potential (0 V). Thus, the potential of the positive terminal is clearly distinguished depending on whether or not the slit electrode 112 is disposed at the position of the air pocket (whether or not the electrode pair 112b is conducted by the grout GR).

  When all the slit electrodes 112A to 112F are turned on and the positive side terminal of the detection resistor 122 becomes about 5V, a current flows through the LED 123 as the detection operation unit to emit light. On the other hand, if there is a slit electrode 112 that is not conductive and the positive terminal of the detection resistor 122 remains at 0 V, the LED 123 does not emit light. Therefore, the operator can determine from the outside of the filling space whether or not the grout GR has been filled by confirming whether or not the LED 123 emits light (operation of the detection operation unit).

  When all the slit electrodes 112A to 112F are turned on (when the LED 123 emits light), it is assumed that the grout GR has been densely filled and the operation is finished. On the other hand, if there is a slit electrode 112 that is not conductive (the LED 123 does not emit light), the grout GR is additionally filled because the filling is insufficient. Thereafter, confirmation of filling and additional filling are repeated until the grout GR is filled densely. Thereby, the amount of grout GR discharged wastefully can be minimized.

  Thus, in the filling detection device 10 of the first embodiment, the filling state of the grout GR can be detected by a simple operation of inserting and removing the sensor plate portion 11 into and from the filling space filled with the grout GR.

  By the way, in the above-described first embodiment, the determination is made based on whether or not all the slit electrodes 112 are conducted. However, the present invention is not limited to this configuration. For example, with respect to the sensor plate portion 11, detection electrodes may be formed along the longitudinal direction of the base plate 111. Hereinafter, the second embodiment configured as above will be described.

  Fig.9 (a) is a figure explaining the filling detection apparatus 10 of 2nd Embodiment. For convenience, the same components as those in the first embodiment will be denoted by the same reference numerals, description thereof will be omitted, and differences will be mainly described. In the second embodiment, the sensor plate portion 11 and the main body portion 12 correspond to contact detection means.

  With respect to the sensor plate portion 11, in this embodiment, a pair of detection electrodes 114 are formed on one surface of the base plate 111 along the longitudinal direction of the base plate 111. Although these detection electrodes 114 are slightly shorter than the base plate 111, they are provided with the same length. And it is provided in parallel with a predetermined interval in the short side direction of the base plate 111.

  Regarding the main body 12, a voltmeter 125 is provided in the present embodiment. The voltmeter 125 corresponds to a detection operation unit, and measures the potential of the positive terminal with respect to the negative terminal of the detection resistor 122, that is, the voltage across the detection resistor 122. In the present embodiment, the LED 123 of the first embodiment is not provided. As for the power supply 121, a constant voltage circuit is used in this embodiment.

  In the filling detection device 10, the voltage value measured by the voltmeter 125 is determined according to the conduction range of the pair of detection electrodes 114. For example, as shown in FIG. 9B, when the pair of detection electrodes 114 are not conducted at all, it is equivalent to connecting each electrode with a resistance having an infinite resistance value. The applied voltage value is the ground voltage V0. On the other hand, when the entirety of the pair of detection electrodes 114 is made conductive by the grout GR, the voltage value measured by the voltmeter 125 becomes a voltage V1 substantially equal to the power supply 121 voltage. When a part of the pair of detection electrodes 114 becomes nonconductive due to the presence of air pockets, the voltage value measured by the voltmeter 125 becomes a voltage V2 that is slightly lower than the power supply voltage.

  As described above, the voltage values of the pair of detection electrodes 114 are different between the case where the entirety is non-conductive, the case where a portion is non-conductive, and the case where the entirety is conductive. The filling state of the grout GR can be determined based on the voltage value. And also with the filling detection apparatus 10 of 2nd Embodiment, the filling state of grout GR can be detected by simple operation which inserts / extracts the sensor board part 11 in the filling space filled with grout GR.

  Next, a third embodiment will be described. In the first embodiment described above, the determination is made based on whether or not all the slit electrodes 112A to 112F are conducted. However, if the conducted slit electrodes 112 can be identified, the filling state of the grout GR in the filling space can be grasped. Convenient and convenient. Therefore, in the filling detection apparatus 10 of the third embodiment, the conductive slit electrode 112 can be specified.

  FIG. 10 is a diagram illustrating the filling detection device 10 of the third embodiment. As can be seen by comparing FIG. 10 with FIG. 1, the filling detection device 10 of the second embodiment has the same basic components as the filling detection device 10 of the first embodiment. Therefore, the same components as those of the first embodiment are denoted by the same reference numerals, description thereof will be omitted, and differences will be mainly described. In the third embodiment, the sensor plate portion 11 and the main body portion 12 correspond to contact detection means.

  With respect to the sensor plate portion 11, in this embodiment, an identification resistor 115 (115A to 115C) is connected in parallel with the electrode pair 112b of the slit electrode 112. The identification resistor 115 is a resistor for identifying each of the slit electrodes 112A to 112C, and is provided corresponding to each of the slit electrodes 112A to 112C.

  In the example of FIG. 10, the first identification resistor 115A corresponds to the first slit electrode 112A, the second identification resistor 115B corresponds to the second slit electrode 112B, and the second identification resistor 115B corresponds to the third slit electrode 112C. Each of the three identification resistors 115C is provided. Each of the identification resistors 115A to 115C is set to a unique identification resistance value. In the present embodiment, each identification resistance value is selected from a range that is larger than the conduction resistance value by the grout GR by a predetermined degree or more and smaller than the detection resistance value of the detection resistor 122.

  In addition, regarding the main body 12, a voltmeter 125 is provided in the present embodiment. Similarly, with respect to the power supply 121, a constant voltage circuit is used in the present embodiment. The voltmeter 125 and the power source 121 are configured in the same manner as in the second embodiment.

  In the filling detection device 10, the identification resistor 115 and the detection resistor 122 constitute a resistance voltage dividing circuit, and therefore the voltage value measured by the voltmeter 125 is determined according to the conduction state of the slit electrodes 112A to 112C. For this reason, the conduction | electrical_connection state of slit electrode 112A-112C can be confirmed based on the measurement result of the voltmeter 125. FIG. Hereinafter, a specific example will be described.

  In this specific example, the resistance value of the first identification resistor 115A is 10 MΩ, the resistance value of the second identification resistor 115B is 20 MΩ, and the resistance value of the third identification resistor 115C is 30 MΩ. The resistance value of the detection resistor 122 is 40 MΩ, and the output voltage from the power source 121 (constant voltage circuit) is 5.0V.

  In this specific example, when each of the slit electrodes 112A to 112C is non-conducting (when the grout is not filled), it can be considered that the identification resistors 115A to 115C are connected in series. As shown in the equation (1), it becomes 2V.

  5 / (10 + 20 + 30 + 40) × 40 = 2 (1)

  When the first slit electrode 112A is made conductive by the grout GR, the resistance value of the first identification resistor 115A becomes small enough to be ignored. For this reason, the voltage value of the voltmeter 125 becomes 2.23V as shown by following Formula (2).

  5 / (20 + 30 + 40) × 40 = 2.23 (2)

  Similarly, when the first slit electrode 112A and the second slit electrode 112B are made conductive by the grout GR, the resistance values of the first identification resistor 115A and the second identification resistor 115B become small enough to be ignored. For this reason, the voltage value of the voltmeter 125 becomes 2.86 V as shown by the following equation (3).

  5 / (30 + 40) × 40 = 2.86 (3)

  Further, when all the slit electrodes 112A to 112C are made conductive by the grout GR, the voltage value of the voltmeter 125 becomes approximately 5V as in the first embodiment described above.

  As is clear from the above description, in the filling detection device 10 of the third embodiment, the identification resistor 115 and the detection resistor 122 constitute a resistance voltage dividing circuit, and therefore the positive terminal of the detection resistor 122 is identified. It is determined according to the ratio between the total resistance value of the resistance 115 and the detection resistance value. When the grout GR is filled, the slit electrode 112 (electrode pair 112b) in contact with the grout GR is conducted, so that the influence of the corresponding identification resistor 115 is reduced. As a result, the positive terminal of the detection resistor 122 rises to a potential closer to the potential of the power supply 121 by that amount. Since each of the identification resistors 115A to 115C has a specific resistance value, it is possible to recognize which electrode pair 112b is conductive by measuring the potential (terminal voltage) of the positive terminal.

  And also with the filling detection apparatus 10 of 3rd Embodiment, the filling state of grout GR is detectable by simple operation which inserts / extracts the sensor board part 11 in the filling space filled with grout GR.

  The above description of the embodiment is for facilitating the understanding of the present invention, and does not limit the present invention. The present invention can be changed and improved without departing from the gist thereof, and the present invention includes equivalents thereof. For example, you may comprise as follows.

  Regarding the sensor plate portion 11, in the above-described embodiment, the one provided with the slit electrode 112 and the wiring member 113 on one surface of the base plate 111 is used, but the configuration is not limited thereto. For example, you may use what provided the pressure sensor and the wiring member 113 in the one side surface of the base board 111. FIG. In this configuration, the pressure detected by the pressure sensor changes when the filled grout GR contacts. For this reason, the grout GR filling state can be detected by processing the detection signal from the pressure sensor in the main body 12. A temperature sensor may be used instead of the pressure sensor. The cement component contained in the grout GR generates heat due to a hydration reaction. Therefore, the filling state of the grout GR can be detected by detecting the temperature change of the filled grout GR with a temperature sensor.

  Furthermore, instead of the pressure sensor or the temperature sensor, a pressure sensitive sheet or a heat sensitive sheet may be used. These pressure-sensitive sheets and heat-sensitive sheets need only be attached to one surface of the base plate 111. Therefore, elements such as the power source 121 can be omitted, and the configuration can be simplified. And since a pressure sensitive sheet and a thermal sensitive sheet require time for detection of a pressure and temperature, they are made to stand still for a predetermined time in an insertion state. This can be said that the post-detection due to the contact can be reduced even if each sheet comes into contact with the grout GR when the sensor plate portion 11 is inserted or removed. In this configuration, the pressure sensitive sheet and the heat sensitive sheet correspond to the contact detecting means.

  The grout GR has been exemplified in the above-described embodiment regarding the filling and hardening material filled in the filling space. About this filling hardening material, various things, such as resin-made hardening materials, can be used. That is, the present invention can be applied to any filling and curing material that has fluidity during construction and is cured after filling.

  Regarding the filling object of grout GR (filling hardening material), it is not restricted to the junction part of a PCa member. For example, it may be a gap between the reinforcing plate wound around the concrete pillar and the concrete pillar. In other words, the present invention can be applied to the case where the filling and hardening material is filled in the gap between the members.

  In the first embodiment, the sensor plate portion 11 has six slit electrodes 112A to 112F. However, the sensor plate portion 11 is not limited to this configuration. There may be at least one slit electrode 112. Further, instead of the base plate 111, a rod-shaped member such as a round bar or a square bar may be used.

  Regarding the power supply 121, the output voltage is not limited to 5V. For example, 12V may be sufficient and 24V may be sufficient. In short, any device capable of outputting a constant voltage may be used.

  Moreover, regarding construction, the filling detection device 10 may be inserted in advance into a filling space that is not yet filled with grout GR (filling hardening material), and the filling detection device 10 may be pulled out after the filling is completed. Even if such a method is adopted, the filling state of the grout GR can be detected by a simple operation.

DESCRIPTION OF SYMBOLS 10 ... Filling detection apparatus, 11 ... Sensor board part, 111 ... Base board, 112 ... Slit electrode, 112A ... 1st slit electrode, 112B ... 2nd slit electrode, 112C ... 3rd slit electrode, 112D ... 4th slit electrode, 112E ... 5th slit electrode, 112F ... 6th slit electrode, 112a ... insulating plate, 112b ... electrode pair, 112c ... metal terminal, 112d ... metal terminal, 113 ... wiring member, 113A ... first wiring member, 113B ... second Wiring member, 113C ... third wiring member, 113D ... fourth wiring member, 113E ... fifth wiring member, 113F ... sixth wiring member, 113G ... seventh wiring member, 114 ... detection electrode, 115 ... identification resistance, 115A... First identification resistor, 115B. Second identification resistor, 115C... Third identification resistor, 12. Resistance for detection, 123 ... LED, 124 ... switch, 125 ... voltmeter, 21 ... joint member, 21a ... reinforcing bar through hole, 22 ... left beam member, 23 ... right beam member, 24 ... upper column member, 24a ... rebar, 24b ... discharge path, 25 ... lower column member, 25a ... reinforcing bar joint part, 25b ... injection path, 26 ... upper joint part, 27 ... lower joint part, 31 ... mold, 32 ... insertion part, 32a ... valve body, 32b ... Frame, GR ... Grout

Claims (5)

A filling detection device for detecting that a filling hardened material having fluidity at the time of construction is filled in a filling space,
Contact detection means whose state changes by contact with the filled hardener;
A filling detection apparatus comprising: a contact insertion means, and a long insertion member inserted from an external space into the filling space.   The filling detection device according to claim 1, wherein the insertion member is made of a strip-shaped thin plate having flexibility. The filling and curing material has fluidity and conductivity during construction,
The contact detection means includes
A power supply that outputs a specified voltage
An electrode pair disposed in the filling space;
A resistance for detection set to a detection resistance value greater than a predetermined degree than a conduction resistance value when the filling hardener conducts the electrode pair;
A wiring member for connecting the power source, the electrode pair, and the detection resistor in series;
The filling detection device according to claim 1, further comprising: a detection operation unit that performs an operation according to a voltage between terminals of the detection resistor.   An insertion member included in the filling detection device according to claim 1 is inserted into a filling space filled with a flow-filling hardening material at the time of construction through an insertion portion provided in a mold, and the filling detection device It is confirmed whether the said filling hardening material with which the said filling space was filled was contacted by the contact detection means which has, The filling confirmation method of the filling hardening material characterized by the above-mentioned.   The filling hardening material according to claim 4, wherein the filling space is a space formed between the column member and the joint portion when the precast concrete column member is joined to the joint portion. Confirmation method.

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