JPH06280356A - Splicing structure for water barrier sheet - Google Patents
Splicing structure for water barrier sheetInfo
- Publication number
- JPH06280356A JPH06280356A JP9664193A JP9664193A JPH06280356A JP H06280356 A JPH06280356 A JP H06280356A JP 9664193 A JP9664193 A JP 9664193A JP 9664193 A JP9664193 A JP 9664193A JP H06280356 A JPH06280356 A JP H06280356A
- Authority
- JP
- Japan
- Prior art keywords
- water
- absorbent resin
- sheet
- joint
- adhesive
- 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.)
- Granted
Links
Landscapes
- Revetment (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は遮水シートの接合部構造
に係り、詳しくは遮水シートの接合部の欠陥部より水が
侵入してもその部分を自己シールして水を遮断すること
ができる遮水シートの接合部構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint structure of a water-blocking sheet, and more particularly, even if water enters from a defective portion of the water-blocking sheet joint, the portion is self-sealed to block the water. The present invention relates to a joint structure of a waterproof sheet.
【０００２】[0002]
【従来の技術】従来、遮水シートの接合部はシート同志
のラップ間に自然加硫可能なゴムテープや溶剤タイプの
接着剤を介在していた。また、遮水シートが熱可塑性エ
ラストマーや塩化ビニルのような熱可塑性樹脂の場合に
は、接合部は熱融着されていた。このような接合時にお
いて作業ミスがあると、その箇所は接着不良となり、漏
水を起こす危険性を含んでいたため、遮水シートの接合
部の検査方法が必要になっていた。このような遮水シー
トの接合部の適性検査は、抜取試験によって接合部分の
接着力試験を行うか、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封入し、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
らないため、漏水が起こらないとして評価されていた。
更に、これを改善した方法として、遮水シート接合部の
未着部分に煙を封入し、この煙のシート外部への流出箇
所を観察することが、特公平４−１７７８６号公報に開
示されている。また、他の方法としては、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。2. Description of the Related Art Conventionally, in a joint portion of a water-impervious sheet, a rubber tape which can be naturally vulcanized or a solvent type adhesive is interposed between wraps of the sheets. Further, when the water-blocking sheet is a thermoplastic elastomer or a thermoplastic resin such as vinyl chloride, the joint portion is heat-sealed. If there is a work error during such joining, the location of the joining will be poorly bonded and there is a risk of water leakage. Therefore, a method for inspecting the joining portion of the water-blocking sheet has been required. Suitability inspection of the joint of such a water-blocking sheet, the adhesion test of the joint by a pull-out test, or at the construction site, the air is enclosed in the unattached part of the water-blocking sheet, and for a certain period of time, After maintaining a constant pressure, if the pressure did not decrease, the air did not flow out, so it was evaluated that no water leakage would occur.
Further, as a method of improving this, it is disclosed in Japanese Patent Publication No. 4-17786 that the smoke is enclosed in the unattached portion of the water-impervious sheet and the outflow location of this smoke is observed to the outside of the sheet. There is. Further, as another method, there is a method in which an ultrasonic inspection machine is brought into contact with the joint portion to detect a defective portion.
【０００３】[0003]
【発明が解決しようとする課題】しかし、従来のシート
の接合部に空気を封入する方法は、塩化ビニルのような
熱可塑性樹脂製の遮水シートにおいて適している反面、
ゴム等の遮水シートにおいては粘接着な状態であるた
め、欠陥状態になっていなくても圧力の減少が生じるこ
とがあって、欠陥状態を正しく判断できない問題があっ
た。一方、遮水シート接合部の未着部分に煙を封入する
方法では、目視によって欠陥状態を正しく判断できる
が、欠陥部分が見つかるごとに、この部分を修復しなれ
ばならなかった。 本発明は、このような問題点を改善す
るものであり、たとえ水の侵入する欠陥部分があっても
この部分を自己修復でき、特に遮水シート接合部の適性
検査を必要としない遮水シートの接合部構造を提供する
ことを目的とする。However, the conventional sheet
A method of enclosing air in the joint of
While suitable as a waterproof sheet made of thermoplastic resin,
Water-impermeable sheets such as rubber are in a tacky state.
Therefore, the pressure will decrease even if the condition is not defective.
Therefore, there is a problem that the defect state cannot be correctly determined.
It was On the other hand, smoke is sealed in the unattached part of the water-blocking sheet joint.
With the method, the defect state can be correctly judged visually.
However, do not repair this defective area each time it is found.
I had to do it. The present invention solves these problems.
Even if there is a defective part where water penetrates,
This part can be self-repaired, especially the suitability of the water-blocking sheet joint.
Providing a joint structure for waterproof sheets that does not require inspection
The purpose is to
【０００４】[0004]
【課題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、遮水シート同志を接合した接合部におい
て、上記接合部内に高吸水性樹脂を介在させた遮水シー
トの接合部構造にあり、また本発明は高吸水性樹脂が不
連続な状態で分散している遮水シートの接合部構造も含
む。更に、本発明では遮水シート同志を接合した接合部
において、高吸水性樹脂が遮水シートの表面に設けられ
た夫々の窪み部に分散している場合も含む。That is, the feature of the present invention resides in that, in a joint portion in which water impervious sheets are joined together, a joint portion structure of a water impervious sheet in which a super absorbent resin is interposed in the joint portion. The present invention also includes a joint structure of a water-blocking sheet in which a super absorbent polymer is dispersed in a discontinuous state. Furthermore, in the present invention, the case where the super absorbent resin is dispersed in the respective recessed portions provided on the surface of the water blocking sheet is also included in the bonding portion where the water blocking sheets are bonded together.
【０００５】以下、本発明の具体的な実施例を添付図面
を用いて説明する。図１は本発明にかかる遮水シートの
接合部構造の一部断面斜視図である。これによると、遮
水シートの接合部１は、遮水シート２、２同志のラップ
部分３に接着部４を有し、この接着部４以外の未着部分
に高吸水性樹脂５を配置している。この高吸水性樹脂５
は粉末状、微粒状、あるいは粒状であって、これを水溶
性薄膜で被覆したものが未着部分に配置される。高吸水
性樹脂５は接合部１において不連続に独立して配置さ
れ、接合部１全体に影響を及ぼさないように配慮されて
いる。Specific embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a partial cross-sectional perspective view of a joint structure of a water-impervious sheet according to the present invention. According to this, the joint part 1 of the water-impervious sheet has an adhesive part 4 on the water-impermeable sheet 2 and the lap part 3 of the two comrades, and the super absorbent resin 5 is arranged on the non-adhered part other than the adhesive part 4. ing. This super absorbent resin 5
Is in the form of powder, fine particles, or particles, which is coated with a water-soluble thin film and is placed in the unattached portion. The highly water-absorbent resin 5 is discontinuously and independently arranged in the joint portion 1 so as not to affect the entire joint portion 1.
【０００６】また、本発明の遮水シートの接合部構造で
は、高吸水性樹脂５を遮水シート２、２の両面に塗布し
た溶剤系の接着剤６の間に局部的に集合した状態で付着
させ、そしてこの高吸水性樹脂５の集合体を不連続に独
立させ、遮水シート２、２同志のラップ部分に介在させ
てもよい。また、図２に示すように、高吸水性樹脂５を
遮水シート２に塗布した粘着ゴムテープ等の接着材６の
上に不連続に独立した状態で付着してもよい。これらの
場合、高吸水性樹脂５はどちらか一方もしくは両方の遮
水シート２の表面に接触していることが好ましい。これ
は、漏水が遮水シート２と接着材６との界面から侵入し
やすいためである。無論、本発明では、高吸水性樹脂５
をテープ状や溶剤系の接着剤６に予め混入したものも使
用できる。しかし、この場合には高吸水性樹脂５は露出
していないため、吸水速度が遅くなる。Further, in the joint structure of the waterproof sheet of the present invention, the super absorbent resin 5 is locally gathered between the solvent-based adhesives 6 coated on both surfaces of the waterproof sheets 2 and 2. You may make it adhere | attach and make this aggregate of the superabsorbent resin 5 discontinuously independent, and may interpose it in the lap part of the water-blocking sheets 2 and 2 comrades. Further, as shown in FIG. 2, the superabsorbent resin 5 may be discontinuously and independently attached onto the adhesive 6 such as an adhesive rubber tape applied to the water blocking sheet 2. In these cases, it is preferable that the super absorbent resin 5 is in contact with the surface of either one or both of the water blocking sheets 2. This is because water leakage easily enters from the interface between the water-blocking sheet 2 and the adhesive material 6. Of course, in the present invention, the super absorbent resin 5
It is also possible to use a tape-shaped or solvent-based adhesive 6 that has been mixed in advance. However, in this case, since the superabsorbent resin 5 is not exposed, the water absorption speed becomes slow.
【０００７】更に、本発明では図３に示すように、高吸
水性樹脂５が一方の遮水シート２の表面に設けられた夫
々の窪み部７内に入った状態で分散しており、この上に
粘着ゴムテープ等の接着材６を介して他の遮水シート２
を積層した構造でもよい。むろん、高吸水性樹脂５を両
方の遮水シート２、２の表面に設けられた窪み部７内に
入れてもよいことは言うまでもない。Further, in the present invention, as shown in FIG. 3, the highly water-absorbent resin 5 is dispersed in the respective recessed portions 7 provided on the surface of one of the water-impervious sheets 2. Another waterproof sheet 2 with an adhesive 6 such as an adhesive rubber tape on top
It may have a laminated structure. Of course, it goes without saying that the highly water-absorbent resin 5 may be put in the recessed portion 7 provided on the surfaces of both the water-impermeable sheets 2 and 2.
【０００８】上記高吸水性樹脂５は、基本的に電離性基
（主として−ＣＯＯＮａ基）を有する親水性ポリマーに
軽度の架橋結合し、あるいはそれに代わるブロックセグ
メント、疎水性基等を導入することにより、樹脂全体を
網状化構造にして水には不溶であるが、大量の水を吸収
して肥大化するような性質を有している。この高吸水性
樹脂としては、架橋ポリビニルアルコールに環状酸無水
物（無水マレイン酸、無水フタル酸等）を反応させ、側
鎖にカルボキシル基を導入すると同時に軽度の架橋結合
を生成させたＶＡｃ−ＭＭＡ系、またデンプン、セルロ
ースにアクリル酸をグラフト重合させソーダ塩としてエ
チレングリコール、ジエチレングリコールで架橋させた
グラフト化デンプン系樹脂、またポリアクリル酸とポリ
アクリル酸塩の共重合体やスチレンスルフォン酸ナトリ
ウムとアクリル酸ナトリムの共重合体、また水溶性エポ
キシ化合物、またウレタン化合物、そしてイソブチレン
−無水マレイン酸共重合物のナトリウム塩等が挙げられ
る。The highly water-absorbent resin 5 is basically obtained by lightly cross-linking a hydrophilic polymer having an ionizable group (mainly --COONa group) or introducing a block segment, a hydrophobic group or the like in place of it. Although the whole resin has a reticulated structure and is insoluble in water, it has a property of absorbing a large amount of water and enlarging it. As the super absorbent polymer, VAc-MMA in which a crosslinked polyvinyl alcohol is reacted with a cyclic acid anhydride (maleic anhydride, phthalic anhydride, etc.) to introduce a carboxyl group into a side chain and at the same time generate a slight crosslinkage -Based, grafted starch-based resins obtained by graft-polymerizing acrylic acid on starch and cellulose with ethylene glycol and diethylene glycol as soda salts, copolymers of polyacrylic acid and polyacrylic acid salts, and sodium styrene sulfonate and acrylic Examples thereof include acid sodium copolymers, water-soluble epoxy compounds, urethane compounds, and sodium salts of isobutylene-maleic anhydride copolymers.
【０００９】上記高吸水性樹脂の形状は、３５μｍ以下
の粉末状で吸水倍率が５００〜１０００倍、１００〜３
００μｍの微粒状で吸水倍率が３００〜６００倍、３０
０〜２０００μｍの粒状で吸水倍率が１００〜３００倍
のものがある。遮水シート２が加硫ゴムシートの場合に
は、未加硫ゴムシートを両面の帆布からなるライナーに
挟持して加硫する際に、該ゴムシートの表面には帆布の
パターンが付くため、粒径３００μｍ以下の高吸水性樹
脂を使用することが望ましい。これは、高吸水性樹脂５
が遮水シート接合部１に形成されたパターンの窪み部７
にまんべんなく分散し、かつ安定的に位置するためであ
り、図４に示すような接合部構造になる。The shape of the highly water-absorbent resin is a powder having a size of 35 μm or less and a water absorption capacity of 500 to 1000 times, 100 to 3 times.
Fine particles of 00 μm with a water absorption capacity of 300 to 600 times, 30
There are particles having a particle size of 0 to 2000 μm and a water absorption capacity of 100 to 300 times. When the water-impervious sheet 2 is a vulcanized rubber sheet, when the unvulcanized rubber sheet is sandwiched between liners made of canvas on both sides for vulcanization, a pattern of canvas is attached to the surface of the rubber sheet, It is desirable to use a highly water-absorbent resin having a particle size of 300 μm or less. This is a super absorbent resin 5
Is the recess 7 of the pattern formed in the water-impermeable sheet joint 1
This is because they are evenly dispersed and stably positioned, resulting in a joint structure as shown in FIG.
【００１０】本発明で使用する遮水シート２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）、あるいはこれらのブレンド物からな
る加硫ゴムシート、塩化ビニルや酢酸ビニルからなる熱
可塑性樹脂、ポリエリレン、ＴＰＯ、ＴＰＵなどの熱可
塑性エラストマー、改質アスファルト等からなる。そし
て、接着部４は、例えば遮水シートが加硫ゴムシートの
場合には自然加硫型ゴムテープや溶剤系の接着剤で接合
され、また遮水シートが熱可塑性樹脂や熱可塑性エラス
トマーの場合には熱融着により接合される。The water-blocking sheet 2 used in the present invention is, for example, a vulcanized rubber sheet made of ethylene-propylene-terpolymer (EPT), butyl rubber (IIR), or a blend thereof, and a heat made of vinyl chloride or vinyl acetate. It is made of a thermoplastic resin, polyerylene, thermoplastic elastomer such as TPO and TPU, and modified asphalt. The adhesive portion 4 is joined with a naturally vulcanizable rubber tape or a solvent-based adhesive when the waterproof sheet is a vulcanized rubber sheet, and when the waterproof sheet is a thermoplastic resin or a thermoplastic elastomer. Are joined by heat fusion.
【００１１】しかして、本発明では、前述の遮水シート
の接合部構造の接着部４の欠陥部があり、この部分から
侵入した水は高吸水性樹脂５によって吸収される。また
同時に、高吸水性樹脂５は自らが体積膨張して欠陥部を
シールする。However, in the present invention, there is a defective portion of the adhesive portion 4 of the above-mentioned joint structure of the water-blocking sheet, and the water that has entered from this portion is absorbed by the superabsorbent resin 5. At the same time, the highly water-absorbent resin 5 itself expands in volume and seals the defective portion.
【００１２】[0012]
【作用】このように、本発明の遮水シートの接合部構造
においては、接合部内に高吸水性樹脂が介在しているた
め、たとえ欠陥のある接合部箇所から水が侵入しても、
高吸水性樹脂は該水を吸水すると同時に膨張し、その部
分を自己シールし、水の侵入を遮断する。また、高吸水
性樹脂を遮水シートの表面に設けられた夫々の窪み部内
に入れてまんべんなく分散させると、小さな欠陥部でも
充分にシールすることができる。As described above, in the joint structure of the water-blocking sheet of the present invention, since the super absorbent resin is present in the joint, even if water enters from the defective joint,
The highly water-absorbent resin absorbs the water and at the same time expands, self-sealing that portion and blocking the intrusion of water. Further, when the super absorbent polymer is put into each of the recesses provided on the surface of the water shield sheet and dispersed uniformly, even a small defect can be sufficiently sealed.
【００１３】[0013]
【実施例】次に、本発明を具体的な実施例により更に詳
細に説明する。厚さ１．５ｍｍのＥＰＴを主成分とする
２枚の加硫ゴムシート（幅１５０ｍｍ×長さ１００ｍ
ｍ）を用意した。この加硫ゴムシートの接合部の両面
は、帆布のパターンが付いたものである。続いて、特殊
ウレタン膨潤性シール材（アクアプレンＣ−３２０：三
洋化成工業社製）を一方の加硫ゴムシートの接合部に挟
持してパターンの窪みの中に入れた後、この上に厚さ
１．０〜１．５ｍｍ、幅１５０ｍｍ、長さ５０ｍｍのム
ーニー粘度５の自然加硫タイプの粘着テープを敷設し、
他方の加硫ゴムシートを重ねた。重ね代は５０ｍｍであ
った。その後、上記接合部をローラ転圧（線圧０．５ｋ
ｇ／ｃｍ）によって圧着し、また同時に粘着テープと加
硫ゴムシートとの間に幅２ｍｍ、長さ１０ｍｍの紙を挟
み、未着部分をつくった。上記加硫ゴムシートの接合部
を温度８０°Ｃの恒温室に１週間放置して粘着テープを
加硫させて接合した後、これを水温１５°Ｃの水中に７
日間入れて、接合部の膨張状態と機械的特性を観測し、
測定した。その結果を表１に示す。尚、機械的特性の測
定はＪＩＳ Ｋ６３０１によった。Next, the present invention will be described in more detail with reference to specific examples. Two vulcanized rubber sheets (width 150 mm x length 100 m) whose main component is EPT with a thickness of 1.5 mm
m) was prepared. Both surfaces of the joint portion of this vulcanized rubber sheet have a canvas pattern. Subsequently, a special urethane swelling sealant (Aquaprene C-320: manufactured by Sanyo Kasei Kogyo Co., Ltd.) is sandwiched between the joints of one vulcanized rubber sheet and put in the depressions of the pattern, and then the thickness is formed thereon. Laying an adhesive tape of 1.0-1.5 mm, width 150 mm, length 50 mm, Mooney viscosity 5 natural vulcanization type,
The other vulcanized rubber sheet was overlaid. The overlap margin was 50 mm. Then, the above-mentioned joining portion is rolled by a roller (linear pressure 0.5 k).
(g / cm), and at the same time, a paper having a width of 2 mm and a length of 10 mm was sandwiched between the adhesive tape and the vulcanized rubber sheet to form an unattached portion. After the bonded portion of the vulcanized rubber sheet was left in a thermostatic chamber at a temperature of 80 ° C for 1 week to vulcanize and bond the adhesive tape, this was immersed in water at a water temperature of 15 ° C for 7 days.
Put in for a day, observe the expansion state and mechanical properties of the joint,
It was measured. The results are shown in Table 1. The mechanical properties were measured according to JIS K6301.
【００１４】[0014]
【表１】 [Table 1]
【００１５】この結果、加硫ゴムシートの接合部は約１
日で２９０％体積膨張して飽和状態となり、これ以上膨
張しないことから接合部の欠陥部分がシールされたと推
定される。しかも、膨張した接合部の伸びは低下する
が、引張強さや引裂強さは膨張する前よりも向上してい
ることが判る。As a result, the joint portion of the vulcanized rubber sheet is about 1
It is estimated that the defective portion of the joint was sealed because the volume expanded 290% in a day to reach a saturated state and no further expansion occurred. Moreover, it can be seen that although the expansion of the expanded joint is reduced, the tensile strength and tear strength are improved as compared with those before expansion.
【００１６】[0016]
【発明の効果】以上のように本発明の遮水シートの接合
部構造においては、接合部内に高吸水性樹脂が存在して
いるため、たとえ欠陥のある接合部箇所から水が侵入し
ても、高吸水性樹脂が該水を吸水すると同時に膨張し、
その部分を自己シールし、水の侵入を遮断する効果があ
る。As described above, in the joint structure of the water-blocking sheet of the present invention, since the superabsorbent resin exists in the joint, even if water enters from the defective joint, , The super absorbent resin absorbs the water and expands at the same time,
It has the effect of self-sealing that part and blocking the ingress of water.
【図面の簡単な説明】[Brief description of drawings]
【図１】本発明にかかる遮水シートの接合部構造の一部
断面斜視図である。FIG. 1 is a partial cross-sectional perspective view of a joint structure of a waterproof sheet according to the present invention.
【図２】本発明にかかる他の遮水シートの接合部構造の
断面図である。FIG. 2 is a cross-sectional view of a joint structure of another impermeable sheet according to the present invention.
【図３】本発明にかかる他の遮水シートの接合部構造の
断面図である。FIG. 3 is a cross-sectional view of a joint structure of another waterproof sheet according to the present invention.
１ 接合部 ２ 遮水シート ３ ラップ部分 ４ 接着部 ５ 高吸水性樹脂 ６ 接着材（剤） ７ 窪み部 DESCRIPTION OF SYMBOLS 1 Joint part 2 Water-impervious sheet 3 Wrap part 4 Adhesive part 5 Super absorbent resin 6 Adhesive material 7
Claims (3)
て、上記接合部内に高吸水性樹脂を介在させたことを特
徴とする遮水シートの接合部構造。1. A joint structure of a water-impervious sheet, characterized in that, in the joint portion in which the water-impermeable sheets are joined together, a super absorbent resin is interposed in the joint portion.
ている請求項１記載の遮水シートの接合部構造。2. The joint structure of a water-blocking sheet according to claim 1, wherein the highly water-absorbent resin is dispersed in a discontinuous state.
けられた夫々の窪み部に分散している請求項１記載の遮
水シートの接合部構造。3. The joint structure of the water-blocking sheet according to claim 1, wherein the highly water-absorbent resin is dispersed in each of the recesses provided on the surface of the water-blocking sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09664193A JP3383354B2 (en) | 1993-03-30 | 1993-03-30 | Joint structure of impermeable sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09664193A JP3383354B2 (en) | 1993-03-30 | 1993-03-30 | Joint structure of impermeable sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06280356A true JPH06280356A (en) | 1994-10-04 |
| JP3383354B2 JP3383354B2 (en) | 2003-03-04 |
Family
ID=14170456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP09664193A Expired - Fee Related JP3383354B2 (en) | 1993-03-30 | 1993-03-30 | Joint structure of impermeable sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3383354B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007247341A (en) * | 2006-03-17 | 2007-09-27 | Lonseal Corp | Water proof structure |
-
1993
- 1993-03-30 JP JP09664193A patent/JP3383354B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007247341A (en) * | 2006-03-17 | 2007-09-27 | Lonseal Corp | Water proof structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3383354B2 (en) | 2003-03-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU593940B2 (en) | Method for heat sealing thermoplastic membranes | |
| EP0617664B1 (en) | Laminate of heat sealable polyolefin and cured polyolefin sheeting | |
| US4861654A (en) | Multilayer carrier films | |
| JPH06280356A (en) | Splicing structure for water barrier sheet | |
| JPS5933375A (en) | Joining of waterproof sheets | |
| JP3100872B2 (en) | How to join the impermeable sheet | |
| JPH0533600Y2 (en) | ||
| JPH049827B2 (en) | ||
| JPS6038129A (en) | Connection of thick plastic sheet | |
| NZ212545A (en) | Laminate with curable rubber layer | |
| JP2767549B2 (en) | Bonding method of self-healing waterproofing sheet | |
| JPH07300949A (en) | Water cut-off sheet | |
| JP2581004Y2 (en) | Impermeable sheet | |
| JP3029938B2 (en) | Waterproof sheet for civil engineering construction | |
| JPH0424397A (en) | Sealing method for segment joint and hydro-expansive sealing material | |
| JPH07293196A (en) | Joining method for impermeable sheet | |
| JP3044943B2 (en) | Waterproof structure at the joint of the impermeable sheet | |
| JPH0248557Y2 (en) | ||
| JPS63304080A (en) | Water stopping material and water stopping using said material | |
| JPH048790A (en) | Cut-off material of joint part of structure and cut-off | |
| JPH10180942A (en) | Water absorbing expansible waterproofing sheet | |
| JP2001132845A (en) | Watertight mat | |
| JPH11152726A (en) | Method for joining impervious sheets | |
| JPH07290576A (en) | Bonding of self-repairing water barrier sheet | |
| JPH0417786B2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |