JP6774100B2 - Sensor for detecting concrete filling and measuring changes in moisture over time - Google Patents

Sensor for detecting concrete filling and measuring changes in moisture over time Download PDF

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JP6774100B2
JP6774100B2 JP2017193303A JP2017193303A JP6774100B2 JP 6774100 B2 JP6774100 B2 JP 6774100B2 JP 2017193303 A JP2017193303 A JP 2017193303A JP 2017193303 A JP2017193303 A JP 2017193303A JP 6774100 B2 JP6774100 B2 JP 6774100B2
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力也 高橋
力也 高橋
鈴木　拓也
拓也 鈴木
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株式会社ケット科学研究所
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Description

本発明は、コンクリート充填探知・水分経時変化測定用センサに関するものであり、詳しくは、コンクリート構造物の表面の内部から一定範囲の深さに至る領域までの充填したコンクリートの充填有無状態やひび割れ、更には充填したコンクリートの水分経時変化状態を、簡易・迅速に、正確に検知することができ、コンクリート建築物等の耐久性評価に大いに有用で、しかも、簡易に測定操作できるように構成したコンクリート充填探知・水分経時変化測定用センサに関するものである。 The present invention relates to a sensor for detecting concrete filling and measuring changes in moisture over time. Specifically, the present invention describes the state of filling or cracking of filled concrete from the inside of the surface of a concrete structure to a certain range of depth. Furthermore, it is possible to easily, quickly, and accurately detect the change in moisture content of the filled concrete over time, which is extremely useful for evaluating the durability of concrete buildings, etc., and is configured so that it can be easily measured and operated. It relates to a sensor for filling detection and measurement of changes in moisture over time.

従来、コンクリートは現代の建築分野において、ビルディング等の躯体や住宅の基礎部等の建築物への利用に欠かせないものである。 Conventionally, concrete has been indispensable for use in buildings such as buildings and foundations of houses in the field of modern architecture.

建築物の新設時には型枠へコンクリートの充填が不可欠であり、その際、正しく充填されているかを把握することは工事の品質管理上極めて重要といえる。 Filling the formwork with concrete is indispensable when constructing a new building, and it is extremely important for quality control of construction to know whether the formwork is filled correctly.

また、従来においては、既設建築物の維持管理において、建築物の耐久性は「打音検査」や「コア抜き」等の手法による圧縮強度や、中性化深さによって評価されている。 Further, conventionally, in the maintenance of an existing building, the durability of the building is evaluated by the compression strength by a method such as "tapping sound inspection" or "core removal" and the neutralization depth.

とりわけ、コンクリート中の水分は、中性化速度に影響を与えるため、間接的に耐久年数に影響する他、ひび割れや透気係数への測定にも関係があるため、経時的な耐久性評価には水分測定を併用することが有用である。 In particular, since the moisture in concrete affects the neutralization rate, it indirectly affects the durability, and it is also related to the measurement of cracks and air permeability coefficient, so it is suitable for durability evaluation over time. It is useful to use moisture measurement together.

建築物の耐久性・寿命をより正確に把握するために、例えばコンクリート壁面等におけるコンクリートの充填状態、水分状態、水分値傾斜状態を打設時から打設後まで経時的に測定・観測することが強く要請される。 In order to more accurately grasp the durability and life of a building, for example, the filling state, moisture state, and moisture value inclination state of concrete on a concrete wall surface, etc. should be measured and observed over time from the time of casting to the post-casting. Is strongly requested.

特許文献１には、検知対象物に接する構造物の壁面より検知対象物側へ略突出しないように壁面に電極面を略並行させて配置した一対の電極からなる電極部と、該電極部の一対の電極で構成されるコンデンサ領域を検知領域とし、検知領域内に存在する水分量で決定される静電容量値を検知する容量検知回路と、容量検知回路から出力される検知された静電容量値に相当する値の電気量を出力する出力部とから成る構成の静電容量式水分量センサが開示されている。 Patent Document 1 describes an electrode portion composed of a pair of electrodes in which electrode surfaces are arranged substantially in parallel with the wall surface so as not to protrude from the wall surface of a structure in contact with the detection object toward the detection object side, and the electrode portion. A capacitor region composed of a pair of electrodes is used as a detection region, and a capacitance detection circuit that detects a capacitance value determined by the amount of water existing in the detection region and a detected capacitance output from the capacitance detection circuit. A capacitive water content sensor including an output unit that outputs an amount of electricity corresponding to a capacitance value is disclosed.

しかし、特許文献１の静電容量式水分量センサの場合、電極部を、検知対象物に接する構造物の壁面より検知対象物側へ略突出しないように壁面に電極面を略並行させて配置した一対の電極からなる構成とし、該電極部の一対の電極で構成されるコンデンサ領域を水分量の検知領域とするものであり、このために、構造物の壁面近傍にしかコンデンサ領域、したがって水分量の検知領域を形成できないものと推定される。 However, in the case of the capacitance type moisture content sensor of Patent Document 1, the electrode surface is arranged substantially in parallel with the wall surface so that the electrode portion does not substantially protrude toward the detection object from the wall surface of the structure in contact with the detection object. The capacitor region composed of the pair of electrodes of the electrode portion is used as the water content detection region. Therefore, the capacitor region is formed only in the vicinity of the wall surface of the structure, and therefore the water content. It is presumed that the quantity detection region cannot be formed.

特開２００１−２１５１８号公報Japanese Unexamined Patent Publication No. 2001-21518

本発明は、上記従来の事情に鑑み開発されたものであり、コンクリート構造物の表面の内部近傍領域は勿論のこと、コンクリート表面から一定範囲である程度の深さに至る領域までのコンクリートの充填探知や水分の経時変化を、簡易・迅速に、正確に検知することができ、コンクリート建築物等の耐久性評価に大いに有用で、しかも、簡易に測定操作できるように構成したコンクリート充填探知・水分経時変化測定用センサを提供するものである。 The present invention has been developed in view of the above-mentioned conventional circumstances, and the filling detection of concrete from the concrete surface to a certain depth within a certain range as well as the inner vicinity region of the surface of the concrete structure. It is possible to easily, quickly, and accurately detect changes in water and moisture over time, which is extremely useful for evaluating the durability of concrete buildings, etc., and is configured so that it can be easily measured and operated. It provides a sensor for change measurement.

本発明のコンクリート充填探知・水分経時変化測定用センサは、外周から内周にわたって絶縁部を挟みつつ所定ピッチで列設した複数のパイプ金属部を備え、測定対象物であるコンクリート構造体内に前記複数のパイプ金属部領域を埋め込んで測定用信号を基に前記複数のパイプ金属部間の周辺にコンクリートの充填状態又はコンクリートの水分経時変化状態に対応する静電容量を持ったコンデンサ領域を形成する筒状のパイプと、前記パイプ内に挿入可能に形成されるとともに、外周部に前記パイプ金属部と同ピッチで、かつ、前記パイプ金属部より少ない個数からなる複数のセンサ電極を備え、前記パイプ内に任意深さ挿入した状態で複数のセンサ電極を対応する複数のパイプ金属部に個々に接触させ、前記複数のセンサ電極から対応する複数のパイプ金属部への測定用信号の供給と、前記コンデンサ領域の静電容量に応じた検知信号を検知し出力する棒状のセンサ体と、を有し、前記センサ体により検知する検知信号によりこのセンサ体のセンサ電極挿入位置の周辺領域におけるコンクリートの充填状態又はコンクリートの水分経時変化に応じた水分状態を測定可能としたことを最も主要な特徴とする。 The sensor for detecting concrete filling and measuring changes in moisture with time of the present invention includes a plurality of pipe metal portions arranged at a predetermined pitch while sandwiching an insulating portion from the outer circumference to the inner circumference, and the plurality of sensors are provided in the concrete structure to be measured. A cylinder that embeds the metal part region of the pipe and forms a capacitor region with capacitance corresponding to the state of filling concrete or the state of aging of water content of concrete around the plurality of metal parts of pipe based on the measurement signal. A pipe having a shape and a plurality of sensor electrodes formed so as to be inserted into the pipe, and having a plurality of sensor electrodes having the same pitch as the metal portion of the pipe and a smaller number than the metal portion of the pipe are provided on the outer peripheral portion of the pipe. A plurality of sensor electrodes are individually brought into contact with a plurality of corresponding pipe metal parts in a state of being inserted at an arbitrary depth, and measurement signals are supplied from the plurality of sensor electrodes to the corresponding pipe metal parts, and the capacitor is provided. It has a rod-shaped sensor body that detects and outputs a detection signal according to the capacitance of the region, and the state of filling concrete in the region around the sensor electrode insertion position of the sensor body by the detection signal detected by the sensor body. Alternatively, the most important feature is that it is possible to measure the water content of concrete according to changes in water content over time.

請求項１記載の発明によれば、一組のパイプとセンサ体との組み合わせからなる簡略構成の基に、コンクリート構造物の表面の内部から一定範囲の深さに至る領域までの充填したコンクリートの充填有無状態やひび割れ、更には充填したコンクリートの水分経時変化状態を、簡易・迅速に、正確に検知することができ、コンクリート建築物等の耐久性評価に大いに有用で、しかも、簡易に測定操作できるようにしたコンクリート充填探知・水分経時変化測定用センサを実現し提供することができる。 According to the invention of claim 1, based on a simplified configuration consisting of a combination of a set of pipes and a sensor body, a filled concrete from the inside of the surface of the concrete structure to a certain range of depth. It is possible to easily, quickly and accurately detect the state of filling or not, cracks, and the state of changes in the water content of the filled concrete over time, which is very useful for evaluating the durability of concrete buildings, etc., and is a simple measurement operation. It is possible to realize and provide a sensor for detecting concrete filling and measuring changes in moisture over time.

請求項２記載の発明によれば、３個以上の複数個のパイプ金属部を備えるパイプと、３個のセンサ電極を備えるセンサ体との組み合わせによる一組からなる簡略構成の基に、請求項１記載の発明と同様、コンクリート構造物の表面の内部から一定範囲の深さに至る領域までの充填したコンクリートの充填有無状態やひび割れ、更には充填したコンクリートの水分経時変化状態を、簡易・迅速に、正確に検知することができ、コンクリート建築物等の耐久性評価に大いに有用で、しかも、簡易に測定操作できるようにしたコンクリート充填探知・水分経時変化測定用センサを実現し提供することができる。 According to the invention according to claim 2, the invention is based on a simplified configuration consisting of a set consisting of a pipe having three or more pipe metal portions and a sensor body having three sensor electrodes. Similar to the invention described in 1, the state of filling or cracking of the filled concrete from the inside of the surface of the concrete structure to the region extending to a certain depth, and the state of the water content of the filled concrete changing with time can be easily and quickly checked. In addition, it is possible to realize and provide a sensor for concrete filling detection and moisture change measurement that can be detected accurately, is very useful for evaluating the durability of concrete buildings, etc., and can be easily measured and operated. it can.

請求項３記載の発明によれば、前記請求項１又は２に記載のセンサ体の外周部に、前記センサ電極のコンクリート構造体内への挿入深さの目安となる目盛部を設けているので、コンクリート充填有無状態等の検知領域の深さの特定が容易となり、コンクリート建築物等の耐久性評価の正確性向上に資することができる前記請求項１又は２のコンクリート充填探知・水分経時変化測定用センサを実現し提供することができる。 According to the invention of claim 3, the outer peripheral portion of the sensor body according to claim 1 or 2 is provided with a scale portion as a guideline for the insertion depth of the sensor electrode into the concrete structure. For detecting concrete filling and measuring changes in moisture with time according to claim 1 or 2, which makes it easy to specify the depth of the detection area such as the presence / absence of concrete filling and contributes to improving the accuracy of durability evaluation of concrete buildings, etc. A sensor can be realized and provided.

請求項４記載の発明によれば、前記請求項３に記載のパイプの外周部に、このパイプをコンクリート構造体内へ挿入した際に当該パイプのコンクリート構造体内への挿入深さの目安となる目盛部を設けているので、このような状態下において、外周に目盛部を具備したセンサ体を当該パイプ内に挿入すると、コンクリート構造体内の任意の位置を検知したい場合、パイプとセンサ体の各目盛部を差し引きすることにより、コンクリート充填有無状態等の任意位置の検知領域の深さの特定が一層容易となり、コンクリート建築物等の耐久性評価の正確性向上に一層資することができる前記請求項３に記載のコンクリート充填探知・水分経時変化測定用センサを実現し提供することができる。 According to the invention of claim 4, when the pipe is inserted into the concrete structure, the scale serves as a guideline for the insertion depth of the pipe into the concrete structure at the outer peripheral portion of the pipe according to claim 3. In such a state, if a sensor body having a scale portion on the outer periphery is inserted into the pipe and it is desired to detect an arbitrary position in the concrete structure, each scale of the pipe and the sensor body is provided. By subtracting the portion, it becomes easier to specify the depth of the detection area at an arbitrary position such as the presence / absence of concrete filling, and the accuracy of the durability evaluation of the concrete building or the like can be further improved. The concrete filling detection / moisture change measurement sensor described in the above can be realized and provided.

請求項５記載の発明によれば、前記請求項１乃至４のいずれか１項に記載のセンサ体のセンサ電極を、前記パイプのパイプ金属部の内周に圧接する弾性を有する構造としているので、センサ電極、パイプ金属部間の電気的接続を確実にし、測定用信号、検知信号の信号伝送を的確に実行し、測定の正確性を期することができる前記請求項１乃至４のいずれか１項に記載のコンクリート充填探知・水分経時変化測定用センサを実現し提供することができる。 According to the invention of claim 5, the sensor electrode of the sensor body according to any one of claims 1 to 4 has a structure having elasticity to press contact with the inner circumference of the pipe metal portion of the pipe. Any of the above claims 1 to 4, which can ensure the electrical connection between the sensor electrode and the metal part of the pipe, accurately execute the signal transmission of the measurement signal and the detection signal, and ensure the accuracy of the measurement. It is possible to realize and provide the sensor for detecting concrete filling and measuring changes in moisture with time according to item 1.

請求項６記載の発明によれば、前記請求項１乃至５のいずれか１項に記載のパイプのパイプ金属部を、円環状、半円環状、又は前記センサ体のセンサ電極が接触可能な大きさで外周部がパイプの外周と面一な楕円体状のいずれかの形状に形成しているので、パイプ金属部からの電界の飛散範囲を抑えて周囲の鉄筋等の金属部の影響を受けにくくすることが可能となるとともに、壁面等の深さごとの水分傾斜を把握することもできる前記請求項１乃至５のいずれか１項に記載のコンクリート充填探知・水分経時変化測定用センサを実現し提供することができる。 According to the invention of claim 6, the pipe metal portion of the pipe according to any one of claims 1 to 5 can be brought into contact with an annular shape, a semi-annular shape, or a sensor electrode of the sensor body. Since the outer peripheral part is formed in either an elliptical shape that is flush with the outer circumference of the pipe, the scattering range of the electric field from the metal part of the pipe is suppressed and it is affected by the metal parts such as the surrounding reinforcing bars. The sensor for detecting concrete filling and measuring changes in moisture with time according to any one of claims 1 to 5 is realized, which can be made difficult and can grasp the moisture inclination for each depth of a wall surface or the like. Can be provided.

図１は本発明の実施例に係るコンクリート充填探知・水分経時変化測定用センサのパイプ及びセンサ体を示す概略斜視図である。FIG. 1 is a schematic perspective view showing a pipe and a sensor body of a sensor for detecting concrete filling and measuring changes in moisture with time according to an embodiment of the present invention. 図２は本実施例におけるパイプの外径及び内径の寸法、パイプの長さ、パイプ金属部、パイプ樹脂部の寸法の一例を示す説明図である。FIG. 2 is an explanatory view showing an example of the dimensions of the outer diameter and inner diameter of the pipe, the length of the pipe, the metal portion of the pipe, and the resin portion of the pipe in this embodiment. 図３は本実施例におけるセンサ体の外径寸法、センサ電極の直径、センサ電極の配列ピッチの一例を示す説明図である。FIG. 3 is an explanatory diagram showing an example of the outer diameter dimension of the sensor body, the diameter of the sensor electrode, and the arrangement pitch of the sensor electrodes in this embodiment. 図４は本実施例に係るコンクリート充填探知・水分経時変化測定用センサによる測定対象物の測定状態における配置態様を概略断面で示す図である。FIG. 4 is a schematic cross-sectional view showing an arrangement mode of an object to be measured by the concrete filling detection / moisture change measurement sensor according to the present embodiment in a measurement state. 図５は本実施例に係るコンクリート充填探知・水分経時変化測定用センサの全体構成、及び測定対象物であるコンクリートの充填状態での水分測定原理を示す概略説明図である。FIG. 5 is a schematic explanatory view showing the overall configuration of the concrete filling detection / moisture change measurement sensor according to the present embodiment and the moisture measurement principle in the filled state of the concrete to be measured. 図６は本実施例に係るコンクリート充填探知・水分経時変化測定用センサによるコンクリート未充填状態での水分測定状態を示す概略説明図である。FIG. 6 is a schematic explanatory view showing a moisture measurement state in a concrete unfilled state by a concrete filling detection / moisture change measurement sensor according to this embodiment. 図７は本実施例に係るコンクリート充填探知・水分経時変化測定用センサにおけるパイプの別例を示す概略斜視図である。FIG. 7 is a schematic perspective view showing another example of the pipe in the concrete filling detection / moisture change measurement sensor according to the present embodiment. 図８は本実施例に係るコンクリート充填探知・水分経時変化測定用センサにおけるパイプの更に別例を示す概略斜視図である。FIG. 8 is a schematic perspective view showing still another example of the pipe in the concrete filling detection / moisture change measurement sensor according to the present embodiment.

本発明は、コンクリート構造物の表面の内部近傍領域は勿論のこと、コンクリート表面から一定範囲である程度の深さに至る領域までのコンクリートの充填探知や水分の経時変化を測定可能な簡略構成のコンクリート充填探知・水分経時変化測定用センサを実現し提供するという目的を、外周から内周にわたって絶縁部を挟みつつ所定ピッチで列設した３個より多い複数個のパイプ金属部を備え、測定対象物であるコンクリート構造体内に前記複数のパイプ金属部領域を埋め込んで測定用信号を基に前記複数のパイプ金属部間の周辺にコンクリートの充填状態又はコンクリートの水分経時変化状態に対応する静電容量を持ったコンデンサ領域を形成する筒状のパイプと、前記パイプ内に挿入可能で、かつ、前記パイプより長尺に形成されるとともに、外周部に前記パイプ金属部と同ピッチで、かつ、前記パイプ金属部より少ない個数である３個のセンサ電極を備え、前記パイプ内に任意深さ挿入した状態で３個のセンサ電極を対応する３個のパイプ金属部に個々に接触させ、前記３個のセンサ電極から対応する３個のパイプ金属部への測定用信号の供給と、前記コンデンサ領域の静電容量に応じた検知信号を検知し出力する棒状のセンサ体と、前記センサ体の３個のセンサ電極を経て前記パイプのパイプ金属部へ測定用信号を供給するとともに、前記センサ体により検知する検知信号を取り込み、前記センサ体の３個のセンサ電極挿入位置の周辺領域におけるコンクリートの充填状態又はコンクリートの水分経時変化に応じた水分状態を測定する水分測定処理手段と、を有する構成により実現した。 The present invention is a simplified concrete structure capable of detecting the filling of concrete from the concrete surface to a certain depth in a certain range and measuring the change of moisture with time, as well as the region near the inside of the surface of the concrete structure. For the purpose of realizing and providing a sensor for filling detection and moisture change measurement with time, it is provided with a plurality of pipe metal parts more than three arranged at a predetermined pitch while sandwiching an insulating part from the outer circumference to the inner circumference, and is a measurement object. The plurality of pipe metal part regions are embedded in the concrete structure, and based on the measurement signal, the electrostatic capacity corresponding to the concrete filling state or the water content aging state of the concrete is applied to the periphery between the plurality of pipe metal parts. A tubular pipe that forms a sensor region, and a pipe that can be inserted into the pipe and is formed longer than the pipe, and has the same pitch as the metal portion of the pipe and the pipe on the outer peripheral portion. The three sensor electrodes, which are smaller in number than the metal part, are provided, and the three sensor electrodes are individually brought into contact with the corresponding three pipe metal parts in a state of being inserted into the pipe at an arbitrary depth, and the three sensor electrodes are individually contacted. A rod-shaped sensor body that supplies measurement signals from the sensor electrodes to the corresponding three pipe metal parts, detects and outputs a detection signal corresponding to the capacitance of the capacitor region, and the three sensor bodies. A measurement signal is supplied to the metal portion of the pipe via the sensor electrode, and a detection signal detected by the sensor body is taken in, and the state of filling concrete in the peripheral region of the three sensor electrode insertion positions of the sensor body or It was realized by a configuration having a moisture measurement processing means for measuring the moisture state according to the change in moisture content of concrete with time.

以下、本発明の実施例に係るコンクリート充填探知・水分経時変化測定用センサについて図面を参照して詳細に説明する。 Hereinafter, the concrete filling detection / moisture aging measurement sensor according to the embodiment of the present invention will be described in detail with reference to the drawings.

本実施例に係るコンクリート充填探知・水分経時変化測定用センサ１は、図１に示すように、測定対象物である建築物におけるコンクリート２２を充填した躯体２１に装填する（埋め込む）金属・樹脂複合製からなる例えば有底円筒状のパイプ２と、前記パイプ２の開口部からこのパイプ２内に挿入し前記躯体２１におけるコンクリート２２の充填探知や水分経時変化を検知し検知信号を得る静電容量式で丸棒状のセンサ体１１と、前記センサ体１１の後端に電気ケーブル１５を介して接続されるとともに、前記検知信号を基に前記コンクリート２２の充填状態又はコンクリート２２の水分経時変化状態に応じた水分状態を測定する水分測定処理手段１０と、を有している。 As shown in FIG. 1, the concrete filling detection / moisture change measurement sensor 1 according to the present embodiment is a metal / resin composite loaded (embedded) in a skeleton 21 filled with concrete 22 in a building to be measured. For example, a bottomed cylindrical pipe 2 made of a material and an electrostatic capacity that is inserted into the pipe 2 through the opening of the pipe 2 to detect the filling of the concrete 22 in the skeleton 21 and to detect a change in moisture with time to obtain a detection signal. In the formula, the round bar-shaped sensor body 11 is connected to the rear end of the sensor body 11 via an electric cable 15, and the concrete 22 is filled or the water content of the concrete 22 changes with time based on the detection signal. It has a moisture measuring processing means 10 for measuring a corresponding moisture state.

次に、前記パイプ２、センサ体１１について図２、図３を参照して詳述する。 Next, the pipe 2 and the sensor body 11 will be described in detail with reference to FIGS. 2 and 3.

前記パイプ２は、図２に示すように、金属・樹脂複合材により例えば後端側が開口した有底円筒状に形成されるとともに、その各部の寸法を長さＬ（例えば７２ｍｍ）、外径Ｄ１（例えば１３ｍｍ）、内径Ｄ２（例えば１１ｍｍ）に設定している。 As shown in FIG. 2, the pipe 2 is formed of, for example, a bottomed cylindrical shape with an opening at the rear end side by a metal / resin composite material, and the dimensions of each part thereof are a length L (for example, 72 mm) and an outer diameter D1. (For example, 13 mm) and inner diameter D2 (for example, 11 mm) are set.

また、前記パイプ２は、その外周から内周にわたって複数（例えば８個）の円環状のパイプ絶縁部４を挟みつつ所定ピッチで列設した複数（例えば９個）の円環状のパイプ金属部３を備えている。また、前記パイプ２の開口端側に１個のパイプ絶縁部４を連設している。 Further, the pipe 2 has a plurality of (for example, 9) annular pipe metal portions 3 arranged in a row at a predetermined pitch while sandwiching a plurality of (for example, 8) annular pipe insulating portions 4 from the outer circumference to the inner circumference thereof. It has. Further, one pipe insulating portion 4 is continuously provided on the opening end side of the pipe 2.

上述したようなパイプ金属部３、パイプ絶縁部４の交互配置の列設構造は、電界の飛散範囲を抑えて周囲の鉄筋等の金属部の影響を受けにくくするとともに、壁面等の深さごとの水分傾斜を把握するためである。 The alternately arranged row structure of the pipe metal portion 3 and the pipe insulating portion 4 as described above suppresses the scattering range of the electric field to make it less susceptible to the influence of the surrounding metal parts such as reinforcing bars, and at each depth of the wall surface or the like. This is to grasp the water gradient of.

更に、前記パイプ２の外周部には、図１に代表例として示すように、前記躯体２１内への挿入深さの目安となる目盛部１７を設けている。目盛部１７のピッチ・形体及び表示位置等は図１の例に限定されるものではなく、任意のピッチ・形体及び表示位置に設定することが可能である。 Further, as shown as a typical example in FIG. 1, a scale portion 17 is provided on the outer peripheral portion of the pipe 2 as a guideline for the insertion depth into the skeleton 21. The pitch / shape and display position of the scale portion 17 are not limited to the example of FIG. 1, and can be set to any pitch / shape and display position.

このような目盛部１７を設けることにより、コンクリート構造体内の任意位置を検知したい場合、コンクリート充填有無状態等の検知領域の深さの特定が一層容易となり、コンクリート建築物等の耐久性評価の正確性向上に一層資することが可能となる。 By providing such a scale portion 17, when it is desired to detect an arbitrary position in the concrete structure, it becomes easier to specify the depth of the detection area such as the presence / absence of concrete filling, and the durability evaluation of the concrete building or the like is accurate. It will be possible to further contribute to the improvement of sexuality.

すなわち、前記パイプ２の外周部に、このパイプ２をコンクリート構造体内へ挿入した際に当該パイプ２のコンクリート構造体内への挿入深さの目安となる目盛部１７を設けているので、このような状態下において、後記するように、外周に目盛部１６を具備したセンサ体１１を当該パイプ２内に挿入すると、コンクリート構造体内の任意位置を検知したい場合、センサ体１１とパイプ２の各目盛部１６、１７を差し引きすることにより、コンクリート充填有無状態等の任意位置の検知領域の深さの特定が一層容易となり、コンクリート建築物等の耐久性評価の正確性向上に一層資することができる。 That is, since a scale portion 17 is provided on the outer peripheral portion of the pipe 2 as a guideline for the insertion depth of the pipe 2 into the concrete structure when the pipe 2 is inserted into the concrete structure. Under the condition, as will be described later, when the sensor body 11 having the scale portion 16 on the outer periphery is inserted into the pipe 2, if it is desired to detect an arbitrary position in the concrete structure, each scale portion of the sensor body 11 and the pipe 2 By subtracting 16 and 17, it becomes easier to specify the depth of the detection region at an arbitrary position such as the presence / absence of concrete filling, which can further contribute to the improvement of the accuracy of durability evaluation of concrete buildings and the like.

なお、図２、図４、図５、図６においては目盛部１７の図示を省略している。 Note that the scale portion 17 is not shown in FIGS. 2, 4, 5, and 6.

前記パイプ金属部３の長さ方向の幅ｔ１は例えば３ｍｍに、前記パイプ絶縁部４の長さ方向の幅ｔ２は例えば５ｍｍに設定している。 The width t1 of the pipe metal portion 3 in the length direction is set to, for example, 3 mm, and the width t2 of the pipe insulating portion 4 in the length direction is set to, for example, 5 mm.

これにより、個々のパイプ絶縁部４を挟んで隣り合う二つのパイプ金属部３の中心間隔、すなわち、各パイプ金属部３の配列のピッチは例えば８ｍｍになるように設定している。 As a result, the center distance between the two pipe metal portions 3 adjacent to each other with the individual pipe insulating portions 4 interposed therebetween, that is, the pitch of the arrangement of the pipe metal portions 3 is set to be, for example, 8 mm.

一方、前記センサ体１１は、図３に示すように、前記パイプ２内に挿入し得るようにその外径Ｄ３を例えば１１ｍｍとしている。 On the other hand, as shown in FIG. 3, the sensor body 11 has an outer diameter D3 of, for example, 11 mm so that it can be inserted into the pipe 2.

また、前記センサ体１１の先端側の外周の一部には、前記パイプ金属部３と同ピッチとなるようにピッチｔ３（＝８ｍｍ）で、直径ｄ＝約３ｍｍとした３個のセンサ電極１２をこのセンサ体１１の外周より外方に（前記パイプ金属部３側に）弾性をもって突出するように設けている。 Further, on a part of the outer circumference of the sensor body 11 on the tip end side, three sensor electrodes 12 having a pitch t3 (= 8 mm) and a diameter d = about 3 mm so as to have the same pitch as the pipe metal portion 3. Is provided so as to elastically project outward (toward the metal portion 3 of the pipe) from the outer circumference of the sensor body 11.

前記センサ電極１２の弾性は、例えば各センサ電極１２における前記センサ体１１内に埋設する基底部に図示しないが小寸法のコイルばねを内装しこのコイルばねの弾力をセンサ電極１２に付与することにより実現している。 The elasticity of the sensor electrode 12 is determined by, for example, incorporating a small-sized coil spring (not shown) in the base portion of each sensor electrode 12 embedded in the sensor body 11 to impart the elasticity of the coil spring to the sensor electrode 12. It has been realized.

そして、前記パイプ２内に前記センサ体１１を挿入した状態では、前記センサ体１１の３個のセンサ電極１２の頂部が各々前記パイプ２における対応する３個のパイプ金属部３の内面に各々圧接（弾性接触）し接触状態が確実になるように構成している。 Then, in the state where the sensor body 11 is inserted into the pipe 2, the tops of the three sensor electrodes 12 of the sensor body 11 are pressure-welded to the inner surfaces of the three corresponding pipe metal portions 3 in the pipe 2, respectively. (Elastic contact) It is configured to ensure the contact state.

これにより、前記センサ電極１２、パイプ金属部３間の電気的接続を確実にし、測定用信号、検知信号の信号伝送を的確に実行し、測定の正確性を期することが可能となる。 As a result, it is possible to ensure the electrical connection between the sensor electrode 12 and the metal portion 3 of the pipe, accurately execute the signal transmission of the measurement signal and the detection signal, and ensure the accuracy of the measurement.

次に、本実施例に係るコンクリート充填探知・水分経時変化測定用センサ１の具体的構成、及び測定対象物である躯体２１内のコンクリート２２の測定状態、測定原理について図４、図５を参照して説明する。 Next, refer to FIGS. 4 and 5 for the specific configuration of the concrete filling detection / moisture change measurement sensor 1 according to the present embodiment, the measurement state of the concrete 22 in the skeleton 21 which is the measurement target, and the measurement principle. I will explain.

前記センサ体１１の３個のセンサ電極１２は、前記電気ケーブル１５に内装した２本の信号線１３、１４を介して前記水分測定処理手段１０に接続している。 The three sensor electrodes 12 of the sensor body 11 are connected to the moisture measurement processing means 10 via two signal lines 13 and 14 built in the electric cable 15.

すなわち、図５に示すように、前記２本の信号線１３、１４のうち、一方の信号線１３の一端は前記水分測定処理手段１０に接続し、他端は電気ケーブル１５内を経て３個のセンサ電極１２のうちの中央のセンサ電極１２に接続している。 That is, as shown in FIG. 5, of the two signal lines 13 and 14, one end of one signal line 13 is connected to the moisture measurement processing means 10, and the other end is three through the inside of the electric cable 15. It is connected to the central sensor electrode 12 of the sensor electrodes 12 of the above.

また、他方の信号線１４の一端は前記水分測定処理手段１０に接続し、他端は電気ケーブル１５内を経て３個のセンサ電極１２のうちの両側の２個のセンサ電極１２、１２に共通接続している。 Further, one end of the other signal line 14 is connected to the moisture measurement processing means 10, and the other end is common to the two sensor electrodes 12 and 12 on both sides of the three sensor electrodes 12 via the electric cable 15. You are connected.

更に、前記センサ体１１の外周部には、図４に代表例として示すように、前記センサ電極１２の躯体２１内への挿入深さの目安となる目盛部１６を設けている。目盛部１６のピッチ・形体及び表示位置等は図１、図４の例に限定されるものではなく、任意のピッチ・形体及び表示位置に設定することが可能である。 Further, as shown as a typical example in FIG. 4, a scale portion 16 is provided on the outer peripheral portion of the sensor body 11 as a guideline for the insertion depth of the sensor electrode 12 into the skeleton 21. The pitch / shape and display position of the scale portion 16 are not limited to the examples of FIGS. 1 and 4, and can be set to any pitch / shape and display position.

このような目盛部１６を設けることにより、コンクリート充填有無状態等の検知領域の深さの特定が容易となり、コンクリート建築物等の耐久性評価の正確性向上に資することが可能となる。 By providing such a scale portion 16, it becomes easy to specify the depth of the detection region such as the presence / absence of concrete filling, and it becomes possible to contribute to the improvement of the accuracy of the durability evaluation of the concrete building or the like.

なお、図３、図５、図６においては目盛部１６の図示を省略している。 Note that the scale portion 16 is omitted in FIGS. 3, 5, and 6.

上述したような構成の基に、図４に示す配置で躯体２１内のコンクリート２２の水分測定を実行する。 Based on the configuration as described above, the moisture content of the concrete 22 in the skeleton 21 is measured in the arrangement shown in FIG.

すなわち、まず、前記パイプ２を躯体２１内のコンクリート２２が存在する領域に埋め込む。 That is, first, the pipe 2 is embedded in the area where the concrete 22 exists in the skeleton 21.

次に、前記センサ体１１の先端側を前記パイプ２内に挿入し、前記パイプ２内において３個のセンサ電極１２を前記パイプ２に設けた対応する３個のパイプ金属部３に各々圧接させる。 Next, the tip end side of the sensor body 11 is inserted into the pipe 2, and three sensor electrodes 12 are brought into pressure contact with the corresponding three pipe metal portions 3 provided in the pipe 2 in the pipe 2. ..

次に、水分測定処理手段１０を動作させ、前記２本の信号線１３、１４を経て前記センサ体１１の３個のセンサ電極１２から前記パイプ２の３個のパイプ金属部３を経て前記コンクリート２２内に測定用信号（高周波交流パルス信号）を送る。 Next, the moisture measuring processing means 10 is operated, and the concrete is passed through the two signal lines 13 and 14 from the three sensor electrodes 12 of the sensor body 11 to the three pipe metal portions 3 of the pipe 2. A measurement signal (high frequency AC pulse signal) is sent within 22.

これにより、前記測定用信号を基に、前記コンクリート２２において３個のパイプ金属部３の周辺領域にコンデンサ領域（図５に円弧状点線で示す）が形成され、コンクリート２２の充填状態又はコンクリート２２の水分経時変化状態に対応する前記コンクリート２２内における前記３個のパイプ金属部３間のコンデンサ領域の静電容量Ｃｘに応じた検知信号を前記センサ体１１の３個のセンサ電極１２により検知することができる。 As a result, a capacitor region (shown by the arcuate dotted line in FIG. 5) is formed in the peripheral region of the three pipe metal portions 3 in the concrete 22 based on the measurement signal, and the concrete 22 is filled or the concrete 22 is filled. A detection signal corresponding to the capacitance Cx of the capacitor region between the three pipe metal portions 3 in the concrete 22 corresponding to the water content aging state is detected by the three sensor electrodes 12 of the sensor body 11. be able to.

この検知信号は、前記２本の信号線１３、１４を経て水分測定処理手段１０に伝送されて、この水分測定処理手段１０により前記コンクリート２２の充填状態又はコンクリート２２の水分経時変化状態に応じた当該コンクリート２２の含水率をはじめとした情報を測定することができる。 This detection signal is transmitted to the moisture measuring processing means 10 via the two signal lines 13 and 14, and the moisture measuring processing means 10 responds to the filling state of the concrete 22 or the moisture aging state of the concrete 22. Information such as the water content of the concrete 22 can be measured.

更に詳述すると、本実施例に係るコンクリート充填探知・水分経時変化測定用センサ１においては、基本的には前記検知信号は静電容量Ｃｘの指標であるカウント値のみであるが、このカウント値を変換して水分測定処理手段１０によりまず含水率を測定する。 More specifically, in the concrete filling detection / moisture change measurement sensor 1 according to the present embodiment, the detection signal is basically only the count value which is an index of the capacitance Cx, but this count value Is converted and the water content is first measured by the water content measuring means 10.

生コンリートの場合は、静電容量値が非常に高く、図６に示すようなコンクリート未充填状態での測定では静電容量Ｃｘ、従って含水率は極端に低くなることから、コンクリート充填状態、未充填の様子を検知し測定することが可能となる。 In the case of ready-mixed concrete, the capacitance value is very high, and in the measurement in the unfilled state of concrete as shown in FIG. 6, the capacitance Cx, and therefore the water content, is extremely low. It is possible to detect and measure the state of filling.

更に上述した含水率が、ある領域の連続する範囲に対して、不連続に高い、若しくは低い領域がある場合、そこはひび割れが発生している可能性があると推定できる。 Further, if the above-mentioned water content has a discontinuously high or low region with respect to a continuous range of a certain region, it can be estimated that cracks may have occurred there.

このことから、本実施例に係るコンクリート充填探知・水分経時変化測定用センサ１によれば、含水率の他にひび割れ箇所も予測できる可能性を有するものである。 From this, according to the concrete filling detection / moisture aging measurement sensor 1 according to the present embodiment, there is a possibility that a cracked portion can be predicted in addition to the water content.

更にまた、本実施例に係るコンクリート充填探知・水分経時変化測定用センサ１によれば、前記躯体２１を構成するためのコンクリート打設時にはそのまま充填検知を行うことも可能である。 Furthermore, according to the concrete filling detection / moisture change measurement sensor 1 according to the present embodiment, it is possible to detect the filling as it is at the time of placing concrete for forming the skeleton 21.

すなわち、前記パイプ２を打設前から前記躯体２１を構成するための型枠に固定し、かつ、前記センサ体１１をパイプ２内に挿入した状態としてコンクリート充填探知・水分経時変化測定用センサ１の動作を開始し、コンクリートを打設する。 That is, the sensor 1 for concrete filling detection and moisture change measurement with the pipe 2 fixed to the formwork for forming the skeleton 21 and the sensor body 11 inserted in the pipe 2 before casting. Start the operation of and pour concrete.

この結果、フレッシュコンクリート充填状態では静電容量Ｃｘが非常に高くなるのに対して、中空では極端に低くなるので、その差を利用して、パイプ２の周辺領域のコンクリートの充填状況を検知することが可能となる。 As a result, the capacitance Cx becomes very high in the fresh concrete filled state, but extremely low in the hollow state. Therefore, the difference is used to detect the concrete filling state in the peripheral region of the pipe 2. It becomes possible.

図７は、前記パイプ２の別例であるパイプ２Ａを示すものであり、基本的構成は前記パイプ２の場合と同様であるが、前記パイプ２Ａの複数のパイプ金属部３Ａを各々半円環状に構成し、これら各パイプ金属部３Ａの両端外側及び各パイプ金属部３Ａ間をパイプ絶縁部により絶縁しつつ前記パイプ２の場合と同様な配列ピッチで列設したものである。 FIG. 7 shows a pipe 2A which is another example of the pipe 2, and the basic configuration is the same as that of the pipe 2, but the plurality of pipe metal portions 3A of the pipe 2A are each semi-annular. The outside of both ends of each of the pipe metal portions 3A and between the pipe metal portions 3A are insulated by a pipe insulating portion and arranged in a row at the same arrangement pitch as in the case of the pipe 2.

図８は、前記パイプ２の更に別例であるパイプ２Ｂを示すものであり、基本的構成は前記パイプ２の場合と同様であるが、前記パイプ２Ｂの複数のパイプ金属部３Ｂを各々楕円体状に構成し、これら各パイプ金属部３Ｂの両端外側及び各パイプ金属部３Ｂ間をパイプ絶縁部により絶縁しつつ前記パイプ２の場合と同様な配列ピッチで列設したものである。 FIG. 8 shows a pipe 2B which is a further example of the pipe 2, and the basic configuration is the same as that of the pipe 2, but the plurality of pipe metal portions 3B of the pipe 2B are each elliptical. It is configured in a shape, and is arranged in a row at the same arrangement pitch as in the case of the pipe 2 while insulating the outside of both ends of each of the pipe metal portions 3B and between the pipe metal portions 3B by the pipe insulating portion.

前記パイプ金属部３Ｂは、前記センサ体１１のセンサ電極１２が内面に接触可能な大きさで、かつ、外周部がパイプ２Ｂの外周と面一となるように配置している。 The pipe metal portion 3B is arranged so that the sensor electrode 12 of the sensor body 11 has a size that allows contact with the inner surface and the outer peripheral portion is flush with the outer periphery of the pipe 2B.

このような図７に示すパイプ２Ａや、図８に示すパイプ２Ｂを使用しても、既述した図１、図２に示すパイプ２の場合と同様な作用、効果を発揮させることができる。 Even if the pipe 2A shown in FIG. 7 or the pipe 2B shown in FIG. 8 is used, the same actions and effects as those of the pipes 2 shown in FIGS. 1 and 2 described above can be exhibited.

なお、パイプの金属部の形状は上述した各例に限らず、金属部がセンサ電極に接触可能な形状であればよく、種々の変形実施が可能である。 The shape of the metal portion of the pipe is not limited to the above-mentioned examples, and any shape may be used as long as the metal portion can contact the sensor electrode, and various deformations can be performed.

以上説明した本実施例によれば、一組のパイプ２とセンサ体１１との組み合わせからなる簡略構成の基に、コンクリート壁面等の決まった領域のコンクリート充填有無状態やひび割れ、更には充填したコンクリート２２の水分経時変化状態を、簡易・迅速に、正確に検知することができるため、建築物等の耐久性評価に大いに有用であり、測定操作の簡便性も実現することが可能なコンクリート充填探知・水分経時変化測定用センサ１を実現し提供することができる。 According to the present embodiment described above, based on a simplified configuration consisting of a combination of a set of pipes 2 and a sensor body 11, concrete filling status, cracks, and filled concrete in a fixed area such as a concrete wall surface are used. Since the water content change state of 22 with time can be detected easily, quickly and accurately, it is very useful for evaluating the durability of buildings and the like, and concrete filling detection can realize the convenience of measurement operation. -It is possible to realize and provide a sensor 1 for measuring a change with time of moisture.

本発明のコンクリート充填探知・水分経時変化測定用センサは、上述した場合の他、農地の土壌の水分検知や、公園、ゴルフ場等の芝生育成のための土壌の水分検知、穀類、牧草、木材チップの水分検知等、各種分野において広範に利用可能である。 In addition to the above cases, the sensor for detecting concrete filling and measuring the change in moisture with time of the present invention can detect soil moisture in farmland, soil moisture detection for growing lawns in parks, golf courses, etc., grains, grass, and wood. It can be widely used in various fields such as chip moisture detection.

１ コンクリート充填探知・水分経時変化測定用センサ
２ パイプ
２Ａ パイプ
２Ｂ パイプ
３ パイプ金属部
３Ａ パイプ金属部
３Ｂ パイプ金属部
４ パイプ絶縁部
１０ 水分測定処理手段
１１ センサ体
１２ センサ電極
１３ 信号線
１４ 信号線
１５ 電気ケーブル
１６ センサ体の目盛部
１７ パイプの目盛部
２１ 躯体
２２ コンクリート 1 Sensor for detecting concrete filling and measuring changes in moisture over time 2 Pipe 2A Pipe 2B Pipe 3 Pipe metal part 3A Pipe metal part 3B Pipe metal part 4 Pipe insulation part 10 Moisture measurement processing means 11 Sensor body 12 Sensor electrode 13 Signal line 14 Signal line 15 Electric cable 16 Scale part of sensor body 17 Scale part of pipe 21 Frame 22 Concrete

Claims (6)

外周から内周にわたって絶縁部を挟みつつ所定ピッチで列設した複数のパイプ金属部を備え、測定対象物であるコンクリート構造体内に前記複数のパイプ金属部領域を埋め込んで測定用信号を基に前記複数のパイプ金属部間の周辺にコンクリートの充填状態又はコンクリートの水分経時変化状態に対応する静電容量を持ったコンデンサ領域を形成する筒状のパイプと、
前記パイプ内に挿入可能に形成されるとともに、外周部に前記パイプ金属部と同ピッチで、かつ、前記パイプ金属部より少ない個数からなる複数のセンサ電極を備え、前記パイプ内に任意深さ挿入した状態で複数のセンサ電極を対応する複数のパイプ金属部に個々に接触させ、前記複数のセンサ電極から対応する複数のパイプ金属部への測定用信号の供給と、前記コンデンサ領域の静電容量に応じた検知信号を検知し出力する棒状のセンサ体と、
を有し、
前記センサ体により検知する検知信号によりこのセンサ体のセンサ電極挿入位置の周辺領域におけるコンクリートの充填状態又はコンクリートの水分経時変化に応じた水分状態を測定可能としたことを特徴とするコンクリート充填探知・水分経時変化測定用センサ。 A plurality of pipe metal portions arranged at a predetermined pitch while sandwiching an insulating portion from the outer circumference to the inner circumference are provided, and the plurality of pipe metal portion regions are embedded in a concrete structure to be measured, and the measurement signal is used as a basis. A tubular pipe that forms a capacitor region with a capacitance corresponding to the concrete filling state or the water content aging state of concrete around between a plurality of pipe metal parts.
It is formed so as to be insertable into the pipe, and is provided with a plurality of sensor electrodes having the same pitch as the metal portion of the pipe and a smaller number than the metal portion of the pipe on the outer peripheral portion, and can be inserted into the pipe at an arbitrary depth. In this state, the plurality of sensor electrodes are individually brought into contact with the corresponding plurality of pipe metal portions, the measurement signal is supplied from the plurality of sensor electrodes to the corresponding plurality of pipe metal portions, and the capacitance of the capacitor region is capacitance. A rod-shaped sensor that detects and outputs a detection signal according to
Have,
Concrete filling detection, characterized in that the detection signal detected by the sensor body makes it possible to measure the concrete filling state in the region surrounding the sensor electrode insertion position of the sensor body or the water content according to the change in water content of the concrete over time. A sensor for measuring changes in moisture over time. 外周から内周にわたって絶縁部を挟みつつ所定ピッチで列設した３個より多い複数個のパイプ金属部を備え、測定対象物であるコンクリート構造体内に前記複数のパイプ金属部領域を埋め込んで測定用信号を基に前記複数のパイプ金属部間の周辺にコンクリートの充填状態又はコンクリートの水分経時変化状態に対応する静電容量を持ったコンデンサ領域を形成する筒状のパイプと、
前記パイプ内に挿入可能で、かつ、前記パイプより長尺に形成されるとともに、外周部に前記パイプ金属部と同ピッチで、かつ、前記パイプ金属部より少ない個数である３個のセンサ電極を備え、前記パイプ内に任意深さ挿入した状態で３個のセンサ電極を対応する３個のパイプ金属部に個々に接触させ、前記３個のセンサ電極から対応する３個のパイプ金属部への測定用信号の供給と、前記コンデンサ領域の静電容量に応じた検知信号を検知し出力する棒状のセンサ体と、
前記センサ体の３個のセンサ電極を経て前記パイプのパイプ金属部へ測定用信号を供給するとともに、前記センサ体により検知する検知信号を取り込み、前記センサ体の３個のセンサ電極挿入位置の周辺領域におけるコンクリートの充填状態又はコンクリートの水分経時変化に応じた水分状態を測定する水分測定処理手段と、
を有することを特徴とするコンクリート充填探知・水分経時変化測定用センサ。 A plurality of pipe metal parts, more than three, arranged in a row at a predetermined pitch while sandwiching an insulating part from the outer circumference to the inner circumference are provided, and the plurality of pipe metal parts regions are embedded in a concrete structure to be measured for measurement. Based on the signal, a tubular pipe that forms a capacitor region with a capacitance corresponding to the concrete filling state or the concrete moisture content aging state around the plurality of pipe metal parts, and
Three sensor electrodes that can be inserted into the pipe and are formed longer than the pipe, and have the same pitch as the metal portion of the pipe and a smaller number than the metal portion of the pipe are provided on the outer peripheral portion. In the state of being inserted into the pipe at an arbitrary depth, the three sensor electrodes are individually brought into contact with the corresponding three pipe metal parts, and the three sensor electrodes are transferred to the corresponding three pipe metal parts. A rod-shaped sensor body that supplies a measurement signal, detects and outputs a detection signal according to the capacitance of the capacitor region, and
A measurement signal is supplied to the pipe metal portion of the pipe via the three sensor electrodes of the sensor body, and a detection signal detected by the sensor body is taken in to be around the three sensor electrode insertion positions of the sensor body. Moisture measurement processing means for measuring the filling state of the concrete in the area or the moisture state according to the change in the moisture content of the concrete with time,
A sensor for detecting concrete filling and measuring changes in moisture over time, which is characterized by having. 前記センサ体の外周部には、前記センサ電極のコンクリート構造体内への挿入深さの目安となる目盛部を設けていることを特徴とする請求項１又は２記載のコンクリート充填探知・水分経時変化測定用センサ。 The concrete filling detection / moisture change with time according to claim 1 or 2, wherein a scale portion serving as a guide for the insertion depth of the sensor electrode into the concrete structure is provided on the outer peripheral portion of the sensor body. Measurement sensor. 前記パイプの外周部には、このパイプをコンクリート構造体内へ挿入した際に当該パイプのコンクリート構造体内への挿入深さの目安となる目盛部を設けていることを特徴とする請求項３に記載のコンクリート充填探知・水分経時変化測定用センサ。 The third aspect of claim 3, wherein the outer peripheral portion of the pipe is provided with a scale portion that serves as a guide for the insertion depth of the pipe into the concrete structure when the pipe is inserted into the concrete structure. A sensor for detecting concrete filling and measuring changes in moisture over time. 前記センサ体のセンサ電極は、前記パイプのパイプ金属部の内周に圧接する弾性を有する構造としていることを特徴とする請求項１乃至４のいずれか１項に記載のコンクリート充填探知・水分経時変化測定用センサ。 The concrete filling detection / moisture aging according to any one of claims 1 to 4, wherein the sensor electrode of the sensor body has a structure having elasticity to press contact with the inner circumference of the metal portion of the pipe of the pipe. Change measurement sensor. 前記パイプのパイプ金属部は、円環状、半円環状、又は前記センサ体のセンサ電極が接触可能な大きさで外周部がパイプの外周と面一な楕円体状のいずれかの形状に形成されていることを特徴とする請求項１乃至５のいずれか１項に記載のコンクリート充填探知・水分経時変化測定用センサ。 The pipe metal portion of the pipe is formed in an annular shape, a semi-annular ring shape, or an elliptical shape having a size that allows the sensor electrodes of the sensor body to be contacted and the outer peripheral portion to be flush with the outer peripheral portion of the pipe. The sensor for detecting concrete filling and measuring changes in moisture with time according to any one of claims 1 to 5, wherein the sensor is characterized by the above.
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