JP6843432B2 - Waterproof sheet deterioration diagnosis method and sheet deterioration diagnosis device - Google Patents

Waterproof sheet deterioration diagnosis method and sheet deterioration diagnosis device Download PDF

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JP6843432B2
JP6843432B2 JP2017105957A JP2017105957A JP6843432B2 JP 6843432 B2 JP6843432 B2 JP 6843432B2 JP 2017105957 A JP2017105957 A JP 2017105957A JP 2017105957 A JP2017105957 A JP 2017105957A JP 6843432 B2 JP6843432 B2 JP 6843432B2
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博之 庄司
博之 庄司
裕之 大西
裕之 大西
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アーキヤマデ株式会社
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Description

本発明は、防水下地上に絶縁工法によって設置された防水シートの劣化度合いを診断するシート劣化診断方法、及び、シート劣化診断装置に関する。 The present invention relates to a sheet deterioration diagnosis method for diagnosing the degree of deterioration of a waterproof sheet installed on a waterproof base by an insulating method, and a sheet deterioration diagnosis device.

防水シートは、屋上等において、常時、日光や風雨に曝されているため経年劣化するものである。このため、定期的に防水シートの劣化度合いを診断し、必要に応じて新たな防水シートに張り替える必要がある。防水シートの劣化度合いを診断する方法として、防水下地の上に設置された防水シートのうち、非接着部分の一部を切り取り、シートの伸び率を引張り試験で測定する方法が知られている。しかし、このような方法は、防水シートの切り取りに起因して防水下地に漏水が生じる虞があるため、望ましい方法ではない。 The waterproof sheet deteriorates over time because it is constantly exposed to sunlight and wind and rain on the rooftop and the like. Therefore, it is necessary to periodically diagnose the degree of deterioration of the waterproof sheet and replace it with a new waterproof sheet as needed. As a method of diagnosing the degree of deterioration of the waterproof sheet, a method of cutting out a part of the non-adhesive portion of the waterproof sheet installed on the waterproof base and measuring the elongation rate of the sheet by a tensile test is known. However, such a method is not desirable because water leakage may occur in the waterproof base due to the cutting of the waterproof sheet.

このような問題点を解消するため、例えば特許文献１に、防水シート（文献では「施行防水シート」）の代わりに判定用シートを用いる方法が記載されている。判定用シートは防水シート上面の一部に接着されたボード上に固定され、防水シートの劣化診断時に判定用シートが切り取られて引張り試験に用いられる。 In order to solve such a problem, for example, Patent Document 1 describes a method of using a determination sheet instead of a waterproof sheet (“enforcement waterproof sheet” in the document). The judgment sheet is fixed on a board adhered to a part of the upper surface of the waterproof sheet, and the judgment sheet is cut off and used for a tensile test at the time of diagnosing deterioration of the waterproof sheet.

特開２００３−０９０７９０号公報Japanese Unexamined Patent Publication No. 2003-090790

しかし、防水シートは防水下地からの影響を直接受けるのに対して、特許文献１に記載の判定用シートはこのような影響を直接受けないため、判定用シートの劣化度合いが防水シートと必ずしも同一とは言えず、正確な防水シートの劣化診断ができない虞があった。 However, while the waterproof sheet is directly affected by the waterproof base, the judgment sheet described in Patent Document 1 is not directly affected by such influence, so that the degree of deterioration of the judgment sheet is not necessarily the same as that of the waterproof sheet. However, there was a risk that an accurate deterioration diagnosis of the waterproof sheet could not be performed.

このような実情に鑑み、防水下地の上に絶縁工法によって設置された現物の防水シートの劣化度合いを、非破壊で、診断する方法が要望されている。 In view of such circumstances, there is a demand for a non-destructive method of diagnosing the degree of deterioration of the actual waterproof sheet installed on the waterproof base by the insulation method.

本発明は、
防水下地上に絶縁工法によって設置された防水シートの劣化度合いを診断するシート劣化診断方法であって、
開口部を有する耐圧容器を、前記耐圧容器のうちの前記開口部側の部分が前記防水シート側となる状態で、前記防水シートにおける非接着部分に対して伏せ込む工程と、
前記耐圧容器の内圧を、大気圧よりも低い値に設定された診断圧力に減圧する工程と、
前記耐圧容器の内圧の減圧によって前記開口部から前記耐圧容器の内部に引き込まれた前記非接着部分の前記防水下地からの浮き上がり量を計測する工程と、
前記浮き上がり量に基づいて、前記防水シートの劣化度合いを判断する工程と、が備えられている。 The present invention
It is a sheet deterioration diagnosis method that diagnoses the degree of deterioration of the waterproof sheet installed on the waterproof base by the insulation method.
A step of laying down a pressure-resistant container having an opening against a non-adhesive portion of the waterproof sheet in a state where the portion of the pressure-resistant container on the opening side is on the waterproof sheet side.
A step of reducing the internal pressure of the pressure-resistant container to a diagnostic pressure set to a value lower than the atmospheric pressure, and
A step of measuring the amount of the non-adhesive portion drawn into the inside of the pressure-resistant container from the opening by reducing the internal pressure of the pressure-resistant container from the waterproof base.
A step of determining the degree of deterioration of the waterproof sheet based on the amount of lifting is provided.

本発明によれば、防水下地の上に設置された現物の防水シートが劣化診断に用いられるため、別途設けられた判定用シートが用いられる場合と比較して、防水シートの劣化度合いを正確に診断することができる。防水シートの伸び率は経年劣化によって低下し、それに伴って防水シートの浮き上がり量も低下するため、防水シートの劣化度合いを浮き上がり量から判断できる。また、防水シートを切り取る必要が無く、防水下地に漏水が生じる虞も無い。その結果、防水下地の上に絶縁工法によって設置された現物の防水シートの劣化度合いを、非破壊で、診断することができる。 According to the present invention, since the actual waterproof sheet installed on the waterproof base is used for deterioration diagnosis, the degree of deterioration of the waterproof sheet is accurately compared with the case where a separately provided judgment sheet is used. Can be diagnosed. The elongation rate of the waterproof sheet decreases due to aged deterioration, and the amount of lifting of the waterproof sheet also decreases accordingly. Therefore, the degree of deterioration of the waterproof sheet can be judged from the amount of lifting. In addition, there is no need to cut off the waterproof sheet, and there is no risk of water leakage occurring in the waterproof base. As a result, the degree of deterioration of the actual waterproof sheet installed on the waterproof base by the insulation method can be diagnosed non-destructively.

本発明において、
防水下地上に絶縁工法によって設置された防水シートの劣化度合いを診断するシート劣化診断装置であって、
開口部が設けられ、前記開口部側の部分を前記防水シート側にして前記防水シートに伏せ込まれる耐圧容器と、
前記耐圧容器に接続され、前記耐圧容器の内圧を減圧可能な減圧装置と、
前記耐圧容器の内圧の減圧によって前記開口部から前記耐圧容器の内部に引き込まれた前記防水シートの前記防水下地からの浮き上がり量を計測可能な計測部と、が備えられていると好適である。 In the present invention
It is a sheet deterioration diagnosis device that diagnoses the degree of deterioration of the waterproof sheet installed on the waterproof base by the insulation method.
A pressure-resistant container in which an opening is provided and the portion on the opening side is set to the waterproof sheet side and is laid down on the waterproof sheet.
A decompression device connected to the pressure-resistant container and capable of reducing the internal pressure of the pressure-resistant container,
It is preferable that the waterproof sheet is provided with a measuring unit capable of measuring the amount of the waterproof sheet lifted from the waterproof base, which is drawn into the inside of the pressure-resistant container from the opening by reducing the internal pressure of the pressure-resistant container.

本構成であれば、防水下地の上に設置された現物の防水シートが劣化診断に用いられ、防水シートの浮き上がり量を計測部によって計測できるため、上述したシート劣化診断方法を実現することができる。 With this configuration, the actual waterproof sheet installed on the waterproof base is used for deterioration diagnosis, and the amount of lift of the waterproof sheet can be measured by the measuring unit, so that the above-mentioned sheet deterioration diagnosis method can be realized. ..

防水シートの上に設置されたシート劣化診断装置の構成を示す図である。It is a figure which shows the structure of the sheet deterioration diagnosis apparatus installed on the waterproof sheet. シート劣化診断装置を減圧状態にしたときのシートの変形状態を示した図である。It is a figure which showed the deformation state of the sheet when the sheet deterioration diagnosis apparatus was put into a decompression state. 劣化が進行した防水シートの診断状態を示す図である。It is a figure which shows the diagnostic state of the waterproof sheet which deteriorated. 劣化が進行していない防水シートの診断状態を示す図である。It is a figure which shows the diagnostic state of the waterproof sheet which deterioration has not progressed.

本発明による防水シート劣化診断方法について、その実施形態を図面に基づいて説明する。図１に示されているように、防水下地１の表面に固定ディスク２が一定の間隔毎に固定されている。防水下地１は、例えば、建物屋上におけるコンクリート製の陸屋根である。 An embodiment of the method for diagnosing deterioration of a waterproof sheet according to the present invention will be described with reference to the drawings. As shown in FIG. 1, fixing disks 2 are fixed to the surface of the waterproof base 1 at regular intervals. The waterproof base 1 is, for example, a concrete flat roof on the roof of a building.

防水下地１及び固定ディスク２の上に、陸屋根や金属屋根の防水に用いられる防水シート３が絶縁工法によって敷設される。即ち、固定ディスク２は導電性を有し、固定ディスク２と防水シート３とは不図示の誘導加熱装置を用いた溶着によって固定される。このように溶着固定された部分は防水シート３における接着部分であり、それ以外の部分は防水シート３における非接着部分である。 A tarpaulin 3 used for waterproofing a flat roof or a metal roof is laid on the waterproof base 1 and the fixed disk 2 by an insulating method. That is, the fixed disc 2 has conductivity, and the fixed disc 2 and the waterproof sheet 3 are fixed by welding using an induction heating device (not shown). The portion welded and fixed in this way is an adhesive portion in the waterproof sheet 3, and the other portion is a non-adhesive portion in the waterproof sheet 3.

〔シート劣化診断装置の構成〕
シート劣化診断方法に使用されるシート劣化診断装置には、耐圧容器４と減圧装置５とが備えられている。耐圧容器４及び減圧装置５はいずれも持ち運び可能な大きさであり、これらが互いに接続ホース６によって接続される。耐圧容器４は、例えばアクリル板等の透明な材料によって構成された直方体形状の容器であり、防水シート３における非接着部分に設置される。減圧装置５は、例えば真空ポンプであり、耐圧容器４の内部における空気を吸引することができるように構成されている。 [Configuration of sheet deterioration diagnostic device]
The sheet deterioration diagnosis device used in the sheet deterioration diagnosis method includes a pressure-resistant container 4 and a pressure reducing device 5. Both the pressure-resistant container 4 and the decompression device 5 have a portable size, and they are connected to each other by a connecting hose 6. The pressure-resistant container 4 is a rectangular parallelepiped-shaped container made of a transparent material such as an acrylic plate, and is installed in a non-adhesive portion of the waterproof sheet 3. The decompression device 5 is, for example, a vacuum pump, and is configured to be able to suck air inside the pressure-resistant container 4.

耐圧容器４には開口部１０が備えられ、耐圧容器４は、開口部１０側が防水シート３の設置面側になるように設置される。開口部１０の全周に亘って、シール部材１１が備えられ、シール部材１１は開口部１０の縁に沿って接着されている。 The pressure-resistant container 4 is provided with an opening 10, and the pressure-resistant container 4 is installed so that the opening 10 side is the installation surface side of the waterproof sheet 3. A sealing member 11 is provided over the entire circumference of the opening 10, and the sealing member 11 is adhered along the edge of the opening 10.

耐圧容器４には、接続プラグ１２、開放弁１３、および圧力計１４が備えられている。接続プラグ１２は、接続ホース６を介して減圧装置５によって吸引される吸引口であり、接続プラグ１２に接続ホース６が接続される。開放弁１３は、手動で開閉自在な弁であり、開放弁１３が開くことによって、耐圧容器４の内圧が大気圧になるように構成されている。耐圧容器４の内圧は圧力計１４に表示され、表示される値は絶対気圧でも減圧値でも良い。 The pressure-resistant container 4 is provided with a connection plug 12, an open valve 13, and a pressure gauge 14. The connection plug 12 is a suction port that is sucked by the decompression device 5 via the connection hose 6, and the connection hose 6 is connected to the connection plug 12. The opening valve 13 is a valve that can be opened and closed manually, and is configured so that the internal pressure of the pressure-resistant container 4 becomes atmospheric pressure when the opening valve 13 opens. The internal pressure of the pressure-resistant container 4 is displayed on the pressure gauge 14, and the displayed value may be an absolute atmospheric pressure or a depressurized value.

耐圧容器４には計測部１５が備えられている。計測部１５は、耐圧容器４の内部に設けられ、防水シート３の設置面と垂直方向にスライド自在となるように構成されている。計測部１５のスライド領域には目盛１５ａが備えられ、目盛１５ａは開口部１０を基端として計測部１５のスライド量を計測するように構成されている。そして、計測が終了してなお、本実施形態では計測部１５は片持ち支持となるように構成されているが、計測部１５は両持ち支持の構成であっても良い。また、計測部１５は、棒形状であっても板形状であっても良い。計測部１５を棒形状に構成すると、計測部１５の位置がシートの最大浮き上がり箇所とずれていると正確な計測ができなくなるため、複数本の計測部１５を、並列または格子状に配置すると良い。 The pressure-resistant container 4 is provided with a measuring unit 15. The measuring unit 15 is provided inside the pressure-resistant container 4 and is configured to be slidable in the direction perpendicular to the installation surface of the waterproof sheet 3. A scale 15a is provided in the slide region of the measuring unit 15, and the scale 15a is configured to measure the slide amount of the measuring unit 15 with the opening 10 as a base end. Further, although the measurement unit 15 is configured to be cantilevered in the present embodiment even after the measurement is completed, the measuring unit 15 may be configured to be cantilevered. Further, the measuring unit 15 may have a rod shape or a plate shape. If the measuring unit 15 is configured in a rod shape, accurate measurement cannot be performed if the position of the measuring unit 15 deviates from the maximum floating point of the sheet. Therefore, it is preferable to arrange a plurality of measuring units 15 in parallel or in a grid pattern. ..

〔防水シート劣化診断方法〕
次に、防水シート劣化診断方法について説明する。
［１］作業者は、図１に示されるように計測部１５を目盛１５ａの基端に位置するように設定する。計測部１５の設定が完了すると、作業者は、開口部１０側が防水シート３の設置面側になるように、防水シート３における非接着部分に耐圧容器４を伏せ込む。即ち、作業者は、防水シート３の設置面の側と反対側から耐圧容器４を防水シート３の設置面の側に押圧する。耐圧容器４を押圧することによって、シール部材１１は全周に亘って防水シート３に隙間なく密着し、耐圧容器４における内部空間の気密性は向上する。 [Waterproof sheet deterioration diagnosis method]
Next, a method for diagnosing deterioration of the waterproof sheet will be described.
[1] The operator sets the measuring unit 15 to be located at the base end of the scale 15a as shown in FIG. When the setting of the measuring unit 15 is completed, the operator puts the pressure-resistant container 4 down on the non-adhesive portion of the waterproof sheet 3 so that the opening 10 side is the installation surface side of the waterproof sheet 3. That is, the operator presses the pressure-resistant container 4 toward the installation surface side of the waterproof sheet 3 from the side opposite to the installation surface side of the waterproof sheet 3. By pressing the pressure-resistant container 4, the sealing member 11 adheres to the waterproof sheet 3 without gaps over the entire circumference, and the airtightness of the internal space in the pressure-resistant container 4 is improved.

［２］開放弁１３を閉じ、減圧装置５を作動させると、耐圧容器４の内部の空気が接続プラグ１２から接続ホース６を介して減圧装置５に吸引され、耐圧容器４の内圧が大気圧よりも低い所望の診断圧力に減圧される。診断圧力は、防水シート３の材質や厚みの他、防水シート３の設置場所の条件等（例えば高度や風速、塩害地域等）を考慮の上で適宜決定される。例えば、大気圧から１５ｋＰａ以内の範囲で減圧することが好ましい。作業者は、圧力計１４で耐圧容器４の内圧を確認し、耐圧容器４の内圧が診断圧力に到達したら、減圧装置５を停止する。 [2] When the release valve 13 is closed and the decompression device 5 is operated, the air inside the pressure vessel 4 is sucked from the connection plug 12 into the decompression device 5 via the connection hose 6, and the internal pressure of the pressure vessel 4 becomes atmospheric pressure. The pressure is reduced to a lower desired diagnostic pressure. The diagnostic pressure is appropriately determined in consideration of the material and thickness of the waterproof sheet 3, the conditions of the place where the waterproof sheet 3 is installed (for example, altitude, wind speed, salt-damaged area, etc.). For example, it is preferable to reduce the pressure within the range of 15 kPa from the atmospheric pressure. The operator confirms the internal pressure of the pressure-resistant container 4 with the pressure gauge 14, and stops the decompression device 5 when the internal pressure of the pressure-resistant container 4 reaches the diagnostic pressure.

［３］耐圧容器４の内圧が減圧することによって、図２に示すように、防水シート３は、耐圧容器４の内部に引き込まれて防水下地１から浮き上がる。防水シート３の浮き上がりに伴って、計測部１５が、防水シート３によって目盛１５ａの基端から押し上げられてスライドする。防水シート３の浮き上がりが飽和した状態で、計測部１５のスライド量を計測することによって、防水シート３の浮き上がり量を計測することができる。計測部１５のスライド量は目盛１５ａによって目視確認することができる。このとき、目盛１５ａで確認される値は、シート表面の浮き上がり量であり、この値を防水シート３の浮き上がり量とすることができる。なお、防水シート３の浮き上がり量は、防水シート３の裏面が防水下地から浮き上がる量に、防水シート３の厚みが加えられた値と定義することもできる。 [3] As the internal pressure of the pressure-resistant container 4 is reduced, the waterproof sheet 3 is drawn into the pressure-resistant container 4 and lifted from the waterproof base 1 as shown in FIG. As the waterproof sheet 3 rises, the measuring unit 15 is pushed up from the base end of the scale 15a by the waterproof sheet 3 and slides. By measuring the slide amount of the measuring unit 15 in a state where the lift of the waterproof sheet 3 is saturated, the lift amount of the waterproof sheet 3 can be measured. The slide amount of the measuring unit 15 can be visually confirmed by the scale 15a. At this time, the value confirmed on the scale 15a is the amount of lifting of the sheet surface, and this value can be used as the amount of lifting of the waterproof sheet 3. The amount of lift of the waterproof sheet 3 can also be defined as a value obtained by adding the thickness of the waterproof sheet 3 to the amount of the back surface of the waterproof sheet 3 lifted from the waterproof base.

［４］防水シート３の浮き上がり量は、防水シート３の伸び率に依存する。防水シート３の経年劣化が進行していれば伸び率は低下するため、防水シート３の浮き上がり量も低下する。したがって、防水シート３の劣化度合いは防水シート３の浮き上がり量に基づいて判断される。具体的には、計測部１５のスライド量の判定閾値Ｈが、防水シートの劣化度合いを判断する基準となる。判定閾値Ｈの値は、防水シート３の材質や厚み、塩害による成分劣化等によって一律ではないが、概ね１０ｍｍ程度が目安となる。図３に示されるように、防水シート３が、防水下地１から浮き上がる量が少なく、計測部１５のスライド量が判定閾値Ｈより小さければ、防水シート３の劣化度合いが、交換が必要な程度まで進行していると判断される。図４に示されるように、防水シート３が、防水下地１から浮き上がる量が多く、計測部１５のスライド量が判定閾値Ｈより大きければ、防水シート３の劣化度合いが、まだ交換が必要な程度まで進行していないと判断される。 [4] The amount of lifting of the waterproof sheet 3 depends on the elongation rate of the waterproof sheet 3. If the deterioration of the waterproof sheet 3 over time progresses, the elongation rate decreases, so that the amount of lifting of the waterproof sheet 3 also decreases. Therefore, the degree of deterioration of the waterproof sheet 3 is determined based on the amount of lifting of the waterproof sheet 3. Specifically, the determination threshold value H of the slide amount of the measuring unit 15 serves as a reference for determining the degree of deterioration of the waterproof sheet. The value of the determination threshold value H is not uniform depending on the material and thickness of the waterproof sheet 3, component deterioration due to salt damage, etc., but is approximately 10 mm as a guide. As shown in FIG. 3, if the amount of the waterproof sheet 3 lifted from the waterproof base 1 is small and the slide amount of the measuring unit 15 is smaller than the determination threshold value H, the degree of deterioration of the waterproof sheet 3 is to the extent that it needs to be replaced. It is judged to be in progress. As shown in FIG. 4, if the amount of the waterproof sheet 3 lifted from the waterproof base 1 is large and the slide amount of the measuring unit 15 is larger than the determination threshold value H, the degree of deterioration of the waterproof sheet 3 is such that the waterproof sheet 3 still needs to be replaced. It is judged that it has not progressed to.

［５］防水シート３の劣化度合いの判断が完了すると、開放弁１３を開き、耐圧容器４の内圧を大気圧に戻し、耐圧容器４を持ち上げて防水シート３から離す。以上の工程により、防水シートの劣化度合いを診断することができる。 [5] When the determination of the degree of deterioration of the waterproof sheet 3 is completed, the release valve 13 is opened, the internal pressure of the pressure-resistant container 4 is returned to the atmospheric pressure, and the pressure-resistant container 4 is lifted and separated from the waterproof sheet 3. Through the above steps, the degree of deterioration of the waterproof sheet can be diagnosed.

〔別実施形態〕
本発明は、上述の実施形態に例示された構成に限定されるものではなく、以下、本発明の代表的な別実施形態を例示する。 [Another Embodiment]
The present invention is not limited to the configurations exemplified in the above-described embodiments, and the following, typical alternative embodiments of the present invention will be exemplified.

〈１〉上述の実施形態では、耐圧容器４の形状は直方体形状に形成されているが、円筒形状や半球形状に形成されていても良い。 <1> In the above-described embodiment, the shape of the pressure-resistant container 4 is formed into a rectangular parallelepiped shape, but it may be formed into a cylindrical shape or a hemispherical shape.

〈２〉耐圧容器４はアクリル板等の透明な材料に限られず、不透明な材料であっても良い。例えば、防水シート３の浮き上がりによって計測部１５が押し上げられた後に、作業者が耐圧容器４を持ち上げて防水シート３から離し、計測部１５のスライド量を開口部１０から覗き見るものであっても良い。この場合、耐圧容器４を動かす際に計測部１５の位置がずれないように、計測部１５におけるスライド機構に、多少の摩擦力を付与する構造を採用すると良い。また、目盛１５ａ及び計測部１５のスライド位置のみが耐圧容器４の外側から見える構成であっても良い。 <2> The pressure-resistant container 4 is not limited to a transparent material such as an acrylic plate, and may be an opaque material. For example, even if the operator lifts the pressure-resistant container 4 and separates it from the waterproof sheet 3 after the measuring unit 15 is pushed up by the lifting of the waterproof sheet 3, and looks into the slide amount of the measuring unit 15 from the opening 10. good. In this case, it is preferable to adopt a structure in which a slight frictional force is applied to the slide mechanism in the measuring unit 15 so that the position of the measuring unit 15 does not shift when the pressure-resistant container 4 is moved. Further, only the slide positions of the scale 15a and the measuring unit 15 may be visible from the outside of the pressure-resistant container 4.

〈３〉開口部１０の周方向に沿って備えられたシール部材１１は必ずしも必要ではなく、例えば開口部１０の縁が防水シート３に密着し、耐圧容器４における内部空間の気密性を向上させることができれば、シール部材１１は必要ない。 <3> The sealing member 11 provided along the circumferential direction of the opening 10 is not always necessary. For example, the edge of the opening 10 is in close contact with the waterproof sheet 3 to improve the airtightness of the internal space in the pressure resistant container 4. If possible, the seal member 11 is not needed.

〈４〉上述の実施形態では、耐圧容器４と減圧装置５とが分離されているが、これらが一体的に構成されていても良い。 <4> In the above-described embodiment, the pressure-resistant container 4 and the decompression device 5 are separated, but these may be integrally configured.

〈５〉上述の実施形態では、計測部１５のスライド量を目視確認する例を示したが、計測部１５のスライド量を電気的に計測するように構成してあっても良い。 <5> In the above-described embodiment, an example of visually confirming the slide amount of the measuring unit 15 is shown, but the slide amount of the measuring unit 15 may be electrically measured.

〈６〉防水シート３の劣化診断は、電気信号等が用いられて自動的に行われても良い。例えば、シート劣化診断装置にマイクロコンピュータが備えられ、所望の診断圧力における防水シート３の浮き上がり量の計測が、診断圧力の到達から一定時間経過後のタイミングで行われ、防水シート３の劣化度合いの判定が表示灯やブザー等によって報知される構成であっても良い。この場合、シート劣化診断装置に液晶タッチパネル等の入力装置が備えられ、防水シート３の種類や厚み、沿岸部や山間部等の設置条件等を作業者が入力でき、入力されたデータに基づいて診断圧力や判定閾値Ｈ、診断タイミング等が決定されても良い。計測部１５には、磁気式やレーザ式のデジタル変位センサ等を用いることができる。 <6> The deterioration diagnosis of the waterproof sheet 3 may be automatically performed by using an electric signal or the like. For example, the sheet deterioration diagnostic device is equipped with a microcomputer, and the amount of lift of the tarpaulin 3 at a desired diagnostic pressure is measured at a timing after a certain period of time has passed from the arrival of the diagnostic pressure to determine the degree of deterioration of the tarpaulin 3. The determination may be notified by an indicator light, a buzzer, or the like. In this case, the sheet deterioration diagnosis device is provided with an input device such as a liquid crystal touch panel, and the operator can input the type and thickness of the tarpaulin 3, the installation conditions of the coastal area and the mountainous area, etc., and based on the input data. The diagnostic pressure, the determination threshold H, the diagnostic timing, and the like may be determined. A magnetic or laser digital displacement sensor or the like can be used for the measuring unit 15.

〈７〉シート劣化診断装置には、ＧＰＳによる位置測位機能や、データ通信機能が備えられていても良い。例えば、防水シート３の劣化診断データが、位置情報と紐付けられて装置内部の記憶媒体に記憶され、必要に応じて他の情報端末へ転送される構成であっても良い。また、他の情報端末から診断条件が受信され、受信された診断条件に基づいて診断圧力や判定閾値Ｈ、診断タイミング等が決定されても良い。 <7> The sheet deterioration diagnosis device may be provided with a GPS positioning function and a data communication function. For example, the deterioration diagnosis data of the tarpaulin 3 may be associated with the position information, stored in the storage medium inside the apparatus, and transferred to another information terminal as needed. Further, the diagnostic conditions may be received from another information terminal, and the diagnostic pressure, the determination threshold value H, the diagnostic timing, and the like may be determined based on the received diagnostic conditions.

本発明は、防水下地がコンクリート製のスラブである場合以外に、折板屋根や瓦棒葺き屋根等の金属屋根や、デッキプレートを用いたスラブや、これらの上に断熱材を敷設したもの等である場合にも適用可能であり、また、屋根における防止シートだけでなく、壁面の防水シートにも適用可能である。 In the present invention, except when the waterproof base is a concrete slab, a metal roof such as a folded plate roof or a tiled roof, a slab using a deck plate, a slab on which a heat insulating material is laid, etc. It can also be applied not only to the preventive sheet on the roof but also to the waterproof sheet on the wall surface.

１ ：防水下地
３ ：防水シート
４ ：耐圧容器
５ ：減圧装置
１０ ：開口部
１５ ：計測部
Ｈ ：判定閾値 1: Waterproof base 3: Waterproof sheet 4: Pressure-resistant container 5: Decompression device 10: Opening 15: Measuring unit H: Judgment threshold

Claims (2)

防水下地上に絶縁工法によって設置された防水シートの劣化度合いを診断するシート劣化診断方法であって、
開口部を有する耐圧容器を、前記耐圧容器のうちの前記開口部側の部分が前記防水シート側となる状態で、前記防水シートにおける非接着部分に対して伏せ込む工程と、
前記耐圧容器の内圧を、大気圧よりも低い値に設定された診断圧力に減圧する工程と、
前記耐圧容器の内圧の減圧によって前記開口部から前記耐圧容器の内部に引き込まれた前記非接着部分の前記防水下地からの浮き上がり量を計測する工程と、
前記浮き上がり量に基づいて、前記防水シートの劣化度合いを判断する工程と、が備えられたシート劣化診断方法。 It is a sheet deterioration diagnosis method that diagnoses the degree of deterioration of the waterproof sheet installed on the waterproof base by the insulation method.
A step of laying down a pressure-resistant container having an opening against a non-adhesive portion of the waterproof sheet in a state where the portion of the pressure-resistant container on the opening side is on the waterproof sheet side.
A step of reducing the internal pressure of the pressure-resistant container to a diagnostic pressure set to a value lower than the atmospheric pressure, and
A step of measuring the amount of the non-adhesive portion drawn into the inside of the pressure-resistant container from the opening by reducing the internal pressure of the pressure-resistant container from the waterproof base.
A sheet deterioration diagnosis method comprising a step of determining the degree of deterioration of the waterproof sheet based on the amount of lifting. 防水下地上に絶縁工法によって設置された防水シートの劣化度合いを診断するシート劣化診断装置であって、
開口部が設けられ、前記開口部側の部分を前記防水シート側にして前記防水シートに伏せ込まれる耐圧容器と、
前記耐圧容器に接続され、前記耐圧容器の内圧を減圧可能な減圧装置と、
前記耐圧容器の内圧の減圧によって前記開口部から前記耐圧容器の内部に引き込まれた前記防水シートの前記防水下地からの浮き上がり量を計測可能な計測部と、が備えられたシート劣化診断装置。 It is a sheet deterioration diagnosis device that diagnoses the degree of deterioration of the waterproof sheet installed on the waterproof base by the insulation method.
A pressure-resistant container in which an opening is provided and the portion on the opening side is set to the waterproof sheet side and is laid down on the waterproof sheet.
A decompression device connected to the pressure-resistant container and capable of reducing the internal pressure of the pressure-resistant container,
A sheet deterioration diagnosis device including a measuring unit capable of measuring the amount of lift of the waterproof sheet drawn into the inside of the pressure-resistant container from the opening by reducing the internal pressure of the pressure-resistant container from the waterproof base.
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