JPH0417786B2 - - Google Patents
Info
- Publication number
- JPH0417786B2 JPH0417786B2 JP1499387A JP1499387A JPH0417786B2 JP H0417786 B2 JPH0417786 B2 JP H0417786B2 JP 1499387 A JP1499387 A JP 1499387A JP 1499387 A JP1499387 A JP 1499387A JP H0417786 B2 JPH0417786 B2 JP H0417786B2
- Authority
- JP
- Japan
- Prior art keywords
- smoke
- water
- sheet
- unattached
- needle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000000779 smoke Substances 0.000 claims description 33
- 238000000034 method Methods 0.000 claims description 19
- 238000007689 inspection Methods 0.000 description 11
- 230000002950 deficient Effects 0.000 description 9
- 239000004636 vulcanized rubber Substances 0.000 description 6
- 230000007547 defect Effects 0.000 description 5
- 229920001971 elastomer Polymers 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 239000012790 adhesive layer Substances 0.000 description 3
- 239000002390 adhesive tape Substances 0.000 description 3
- 229920005549 butyl rubber Polymers 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 229920005992 thermoplastic resin Polymers 0.000 description 3
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920002725 thermoplastic elastomer Polymers 0.000 description 2
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000011387 rubberized asphalt concrete Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229920001897 terpolymer Polymers 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
Landscapes
- Lining Or Joining Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は遮水シート接合部の検査方法に係り、
詳しくは遮水シート接合部に予めつくられた未着
部分へ強制的に煙を送り込み、この煙がどのよう
に外部へ流出するかを観察することによつて遮水
シート接合部の欠陥箇所を調べる遮水シート接合
部の検査方法にある。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a method for inspecting a water-blocking sheet joint,
Specifically, we can detect defects in the water-shielding sheet joints by forcibly sending smoke into the unattached areas created in advance at the water-shielding sheet joints and observing how the smoke flows out. This is in the inspection method for the water-shielding sheet joints.
（従来技術）
従来、遮水シート接合部の適正検査は抜取試験
により接合部分の接着力試験を行なうか、また施
工現場においては遮水シート接合部の未着部分に
空気を圧入し、一定時間、一定圧を保持した後、
圧力の減少がなければ空気の流出が起こらなかつ
たとして評価されていた。しかし、この方法は塩
化ビニル等の合成樹脂製遮水シートにおいて適し
ている反面、ゴム等のシートにおいては接合部分
が粘接着な状態であること、また比較的低モジユ
ラスであるため、欠陥状態になつていなくとも圧
力の減少が生じることがあり、欠陥状態が正しく
判断出来ない問題があつた。(Prior art) Conventionally, the adequacy of water-shielding sheet joints has been tested by conducting a sampling test to test the adhesion of the joints, or at the construction site, air is injected into the unattached parts of the water-shielding sheet joints, and air is injected into the unattached parts of the water-shielding sheet for a certain period of time. , after holding constant pressure,
It was evaluated that air outflow could not occur without a decrease in pressure. However, while this method is suitable for water-shielding sheets made of synthetic resins such as vinyl chloride, the joints of sheets made of rubber etc. are adhesive and have a relatively low modulus, resulting in defects. There was a problem in that the pressure could decrease even if the temperature had not increased, making it difficult to correctly determine the defect status.
更に、他の方法として超音波検査機を接合部に
当接させて、欠陥部を検出する方法があるが、こ
の方法は樹脂シートにおいて適当であるが、異質
の接着剤層が介在しているゴムシートの場合には
適用出来ない問題があつた。 Furthermore, there is another method of detecting defects by bringing an ultrasonic inspection machine into contact with the joint, but this method is suitable for resin sheets, but there is a different adhesive layer between them. In the case of rubber sheets, there was a problem that the method could not be applied.
（発明が解決しようとする問題点）
本発明はこのような従来の検査方法の問題点を
改善するものであり、特に遮水シート接合部の欠
陥を正しく判断できる遮水シート接合部の検査方
法を提供することを目的とする。(Problems to be Solved by the Invention) The present invention improves the problems of such conventional inspection methods, and in particular, provides an inspection method for water-shielding sheet joints that can correctly determine defects in water-shielding sheet joints. The purpose is to provide
（問題点を解決するための手段）
即ち、本発明の特徴とするところは予めつくら
れた遮水シート接合部の未着部分に煙送風機の針
部を挿入し、該針部の貫通孔から煙を送り込んだ
後、該煙の外部への流出箇所を検査してなる遮水
シート接合部の検査方法にある。(Means for Solving Problems) That is, the feature of the present invention is that the needle of a smoke blower is inserted into the unattached portion of the water-shielding sheet joint made in advance, and the needle of the smoke blower is inserted through the through-hole of the needle. The present invention provides a method for inspecting a water-blocking sheet joint by introducing smoke and then inspecting a point where the smoke leaks to the outside.
（作用）
本発明の検査方法によれば遮水シート接合部の
未着部分に煙送風機の針部を挿入して未着部分の
空間部に所定量の煙を送り込むと、該煙はシート
の未着領域へ進入し、欠陥部がある場合には欠陥
部より外部へ流出する。これにより、煙の流出箇
所を検査することができ、欠陥箇所を適切に処理
することが可能になる。また、この検査方法では
煙を使用するために空気圧を大きくする必要がな
く、これによりゴムシートの接着部分を破壊する
こともない。(Function) According to the inspection method of the present invention, when the needle of the smoke blower is inserted into the unattached part of the water-shielding sheet joint and a predetermined amount of smoke is sent into the space of the unattached part, the smoke is removed from the sheet. It enters the unattached area and flows out from the defective area if there is a defective area. This makes it possible to inspect the smoke outflow location and appropriately treat defective locations. In addition, this inspection method uses smoke, so there is no need to increase the air pressure, and this does not destroy the bonded portion of the rubber sheet.
以下、更に本発明の具体的な実施態様を添付図
面に従つて説明する。 Hereinafter, specific embodiments of the present invention will be further described with reference to the accompanying drawings.
第１図は本発明の検査方法の一例を示す斜視図
であり、遮水シート１，１の接合部２の間には接
合部と同巾の例えば自然加硫可能なゴムテープ、
あるいはオレフイン系熱可塑性樹脂フイルムある
いは通常の接着剤からなる接着層３が介在してい
る。さらに、この接合部２に予め帯状の未着部分
４をつくり、これに針部の貫通孔から煙を噴出す
る煙送風機５が使用されるが、この煙送風機５は
貫通孔を有する筒状の針部６、発煙管７そして空
気注入機８が夫々パイプ９によつて連結されてい
る。発煙管７で発生した白色、黄色等の煙は空気
注入機８により生じた風圧によつて針部６の先端
部から噴出する。 FIG. 1 is a perspective view showing an example of the inspection method of the present invention, in which a naturally vulcanizable rubber tape, for example, having the same width as the joint, is placed between the joint 2 of the water-shielding sheets 1, 1.
Alternatively, an adhesive layer 3 made of an olefin thermoplastic resin film or an ordinary adhesive is interposed. Furthermore, a belt-shaped unattached part 4 is made in advance in this joint part 2, and a smoke blower 5 is used that blows out smoke from a through hole in the needle part. The needle 6, the smoke tube 7, and the air injector 8 are connected by pipes 9, respectively. White, yellow, etc. smoke generated by the smoke tube 7 is ejected from the tip of the needle 6 by the wind pressure generated by the air injector 8.
即ち、本発明の検査方法によるとまず予めつく
られた遮水シート接合部の帯状の未着部分４に煙
送風機５の針部６を挿入した後、煙送風機５を作
動させて煙を強制的に該未着部分４の空間部へ送
り込む。送り込まれた煙によつて未着部分の空間
部が所定圧に到達すると、該煙は更にシート間の
未着領域へ進出してシート接合部の外部へと流出
し、これによつて欠陥部分４の箇所が明らかにな
る。 That is, according to the inspection method of the present invention, first, the needle part 6 of the smoke blower 5 is inserted into the band-shaped unattached part 4 of the water-shielding sheet joint made in advance, and then the smoke blower 5 is operated to forcibly remove the smoke. Then feed it into the space of the unattached portion 4. When the space in the unattached area reaches a predetermined pressure due to the smoke sent in, the smoke further advances into the unattached area between the sheets and flows out of the sheet joint, thereby damaging the defective area. Section 4 becomes clear.
上記空気注入機８によつて生じる送風圧は約
0.1Kg／cm2以下で充分であり、これを超えると遮
水シート１，１の接着部分が剥離する可能性があ
る。また、上記針部６は管状体であるが、先端が
鋭角となつて挿入しやすく、例えば注射器の針形
状に類似している。 The air blowing pressure generated by the air injector 8 is approximately
0.1 Kg/cm 2 or less is sufficient, and if it exceeds this, there is a possibility that the adhesive parts of the water-blocking sheets 1, 1 will peel off. Further, although the needle portion 6 is a tubular body, the tip thereof has an acute angle for easy insertion, and has a shape similar to, for example, the needle of a syringe.
また、本発明方法において適用される遮水シー
ト１としては、例えばエチレン−プロピレン・タ
ーポリマー（EPT）、ブチルゴム（IIR）あるい
はEPTとIIRのブレンド物からなる加硫ゴム、塩
化ビニル、酢酸ビニル等の熱可塑性樹脂、熱可塑
性エラストマー、もしくはゴム化アスフアルト等
からなる。そして、上記遮水シート接合部分に使
用される接着層３としては特に限定されるもので
はなく、例えば加硫ゴムシートの場合には自然加
硫型ゴムテープ、樹脂フイルムが使用され、また
熱可塑性樹脂、熱可塑性エラストマー等の場合に
は熱融着により接合される。 Further, as the water-blocking sheet 1 applied in the method of the present invention, for example, vulcanized rubber made of ethylene-propylene terpolymer (EPT), butyl rubber (IIR) or a blend of EPT and IIR, vinyl chloride, vinyl acetate, etc. thermoplastic resin, thermoplastic elastomer, or rubberized asphalt. The adhesive layer 3 used for the water-shielding sheet joint portion is not particularly limited, and for example, in the case of a vulcanized rubber sheet, a naturally vulcanized rubber tape or a resin film may be used, or a thermoplastic resin may be used. , thermoplastic elastomer, etc., they are joined by thermal fusion.
尚、本発明方法においては遮水シートの帯状の
未着部分４はゴムシートの場合において巾５cm以
下、長さ５ｍ以下が好ましく、一方樹脂シートの
場合には巾２cm以下、長さ10ｍ以下が適正であ
る。 In addition, in the method of the present invention, the band-shaped unattached portion 4 of the water-blocking sheet is preferably 5 cm or less in width and 5 m or less in length in the case of a rubber sheet, while it is preferably 2 cm or less in width and 10 m or less in length in the case of a resin sheet. Appropriate.
次に、本発明の検査方法の具体的実施例を説明
する。 Next, a specific example of the inspection method of the present invention will be described.
実施例
厚さ1.5mmのEPTを主成分とする加硫ゴムシー
トの接合部（巾150mm）に厚さ1.0〜1.5mm、巾150
mm、ムーニー粘度５の自然加硫タイプの粘着テー
プを介在させ、ローラ転圧（線圧0.5Kg／cm）に
よつて圧着し、また上記接合部の中央部分にあえ
てシートの未着部分を作るため巾３cm、長さ２ｍ
程度にわたり、上記粘着テープを介在させなかつ
た。そしてまた同時に本実施例ではシートの外部
と未着部分とが連通する欠陥部をつくつた。Example: 1.0 to 1.5 mm thick and 150 mm wide at the joint (width 150 mm) of a 1.5 mm thick vulcanized rubber sheet mainly composed of EPT.
A naturally vulcanized adhesive tape with a Mooney viscosity of 5 mm is interposed, and the sheet is pressed using roller rolling pressure (linear pressure 0.5 Kg/cm), and an unattached part of the sheet is intentionally created in the center of the above joint. Storage width 3cm, length 2m
To some extent, the adhesive tape was not used. At the same time, in this example, a defective portion was created in which the outside of the sheet and the unattached portion communicated with each other.
該粘着テープを加硫させ加硫ゴムシート同志を
接合させると、第１図に示される煙送風機を持込
み、該送風機の針部を加硫ゴムシートの未着部分
に挿入した後、空気注入機を作動させて発煙管で
発生した煙を上記針部より未着部分内へ送り込ん
だ。所定量の煙を送り込むと、未着部分内の煙は
移動して欠陥部分から外部へと流出することが観
察され、欠陥箇所が明らかになつた。 After vulcanizing the adhesive tape and joining the vulcanized rubber sheets together, bring in the smoke blower shown in Figure 1, insert the needle of the blower into the unattached part of the vulcanized rubber sheet, and then use the air injector. was activated, and the smoke generated by the smoke tube was sent into the unattached part through the needle. When a predetermined amount of smoke was delivered, it was observed that the smoke in the unattached area moved and flowed out from the defective area, revealing the defective area.
（効果）
以上のように本発明の検査方法によれば、予め
つくられた遮水シート接合部の未着部分内に所定
量の煙を送り込むと、煙が欠陥領域へ侵入してシ
ート接合部から外部への流出が観察されて欠陥部
分の箇所が明らかになり、また目に見える煙を未
着部分内へ封入するため低圧力でも充分観察可能
で、これにより遮水シートの接着力が低い場合で
もこの部分に弊害を与えずに適性に検査出来る効
果がある。(Effects) As described above, according to the inspection method of the present invention, when a predetermined amount of smoke is sent into the unattached portion of the water-shielding sheet joint made in advance, the smoke enters the defective area and the sheet joint The leakage to the outside is observed, which reveals the location of the defective part, and since the visible smoke is sealed into the unattached part, it can be observed sufficiently even at low pressure, which reduces the adhesive strength of the water-blocking sheet. This has the effect of allowing proper testing without causing any harm to this area.
第１図は本発明の検査方法の一例を示す斜視図
である。
１…遮水シート、２…接合部、４…未着部分、
５…煙送風機、６…針部。
FIG. 1 is a perspective view showing an example of the inspection method of the present invention. 1...Waterproof sheet, 2...Joint part, 4...Unattached part,
5... Smoke blower, 6... Needle part.
Claims (1)
に煙送風機に具備した針部を挿入し、該針部の貫
通孔から煙を送り込んだ後、該煙の上記シートの
外部への流出箇所を観察してなることを特徴とす
る遮水シート接合部の検査方法。1. After inserting the needle of the smoke blower into the unattached part of the pre-made water-shielding sheet joint and sending smoke through the through-hole of the needle, the point where the smoke flows out to the outside of the sheet A method for inspecting a water-blocking sheet joint, characterized by observing the following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62014993A JPS63182134A (en) | 1987-01-23 | 1987-01-23 | Inspecting method for connected part of water preventing sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62014993A JPS63182134A (en) | 1987-01-23 | 1987-01-23 | Inspecting method for connected part of water preventing sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63182134A JPS63182134A (en) | 1988-07-27 |
| JPH0417786B2 true JPH0417786B2 (en) | 1992-03-26 |
Family
ID=11876461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62014993A Granted JPS63182134A (en) | 1987-01-23 | 1987-01-23 | Inspecting method for connected part of water preventing sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63182134A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0647812B2 (en) * | 1988-11-15 | 1994-06-22 | 株式会社大林組 | Detection method for defective parts in water-blocking sheets |
| DE10197184T5 (en) * | 2001-01-29 | 2004-04-29 | Nihon Kanko Co., Ltd., Kawaguchi | Foil welding apparatus and welding method therefor |
-
1987
- 1987-01-23 JP JP62014993A patent/JPS63182134A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63182134A (en) | 1988-07-27 |
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