JP2000064521A - Repairing joint piece of sheet waterproof structure and repairing method of sheet waterproof structure - Google Patents
Repairing joint piece of sheet waterproof structure and repairing method of sheet waterproof structureInfo
- Publication number
- JP2000064521A JP2000064521A JP10238378A JP23837898A JP2000064521A JP 2000064521 A JP2000064521 A JP 2000064521A JP 10238378 A JP10238378 A JP 10238378A JP 23837898 A JP23837898 A JP 23837898A JP 2000064521 A JP2000064521 A JP 2000064521A
- Authority
- JP
- Japan
- Prior art keywords
- waterproof sheet
- repairing
- sheet
- joint piece
- repair
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、シート防水構造
物の改修に際し、改修用防水シートを防水すべき構造物
に接合固定するために、改修対象の既設防水シート上に
載置した状態で用いられるシート防水構造物の改修用接
合片、及びこれを用いたシート防水構造物の改修方法に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used in the state of being mounted on an existing tarpaulin to be repaired in order to join and fix the tarpaulin for repair to a structure to be waterproofed when the waterproof tarpaulin is repaired. The present invention relates to a repair piece for a waterproof sheet structure and a method for repairing a waterproof sheet structure using the same.
【０００２】[0002]
【従来の技術】例えば、ビルや家屋等の防水を必要とす
る屋外側の躯体表面には、雨水等の侵入を防ぐために、
合成樹脂からなる防水シートを絶縁工法を用いたシート
防水工法により張設することが一般的に行われている。2. Description of the Related Art For example, in order to prevent rainwater and the like from invading on the surface of a building or a house on the outdoor side that requires waterproofing,
A waterproof sheet made of a synthetic resin is generally stretched by a sheet waterproof method using an insulating method.
【０００３】このようなシート防水構造物は、長期の使
用により劣化すると、防水シートの張力バランスが乱れ
て局部的に伸び縮みが生じ、防水シートに剥離や膨れが
生じて美観を損ねると共に、場合によっては亀裂が発生
して漏水するおそれがある。When such a waterproof sheet structure deteriorates due to long-term use, the tension balance of the waterproof sheet is disturbed and the expansion and contraction occur locally, resulting in peeling and swelling of the waterproof sheet, which impairs the appearance. Depending on the situation, cracks may occur and water may leak.
【０００４】このためシート防水構造物は、経年劣化す
ると改修が必要となるが、従来その改修方法の一つとし
て、既設防水シート上に新防水シートを絶縁工法により
張設する改修方法、すなわち既設防水シート上から新た
に接合片を固定し、既設防水シート上に新防水シートを
張り渡した状態で上記新設の接合片に接着する改修方法
が採用されている。この改修方法においては、既設の防
水シートを撤去する必要がなく、作業効率の向上を図る
ことができる。For this reason, the sheet waterproof structure needs to be repaired when it deteriorates with age, but as one of the conventional repair methods, a new waterproof sheet is stretched on the existing waterproof sheet by an insulation method, that is, the existing waterproof sheet is repaired. A refurbishment method is employed in which a joining piece is newly fixed on the waterproof sheet, and the new joining sheet is stretched over the existing waterproof sheet and adhered to the new joining piece. In this repair method, it is not necessary to remove the existing waterproof sheet, and work efficiency can be improved.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、上記改
修方法においては、改修完了後に、既設防水シートが熱
等の影響により劣化がさらに進行すると、既設防水シー
トに縮みや皺が発生して新設の接合片が浮き上がり、ひ
いては新防水シートも浮き上がって、良好な美観を維持
できないことが起こりうるという問題が発生する。However, in the above-mentioned repair method, when the existing waterproof sheet further deteriorates due to the influence of heat or the like after the completion of the repair, the existing waterproof sheet is shrunk or wrinkled, resulting in a new joint. There is a problem in that one piece may be lifted up, and the new waterproof sheet may also be lifted up, so that a good aesthetic appearance may not be maintained.
【０００６】この発明は、上記従来技術の問題を解消
し、改修された構造物において良好な美観を長期維持で
きるとともに、早期劣化を防止できて防水シートとして
の耐久性を十分に付与することのできるシート防水構造
物の改修用接合片及び改修方法を提供することを目的と
する。The present invention solves the above-mentioned problems of the prior art, can maintain a good aesthetic appearance for a reconstructed structure for a long period of time, can prevent early deterioration, and can sufficiently impart durability as a waterproof sheet. It is an object of the present invention to provide a joining piece for repairing a waterproof sheet structure and a repairing method thereof.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するため
に、本発明者らは鋭意研究の結果、改修用接合片におけ
る既設防水シートとの接触面に、可塑剤を多量に含有し
た塩化ビニル系樹脂層を設ける構成とし、該樹脂層が改
修対象の既設防水シートに接触する態様でこの改修用接
合片を既設防水シート上に載置して、この接合片を介し
て改修用防水シートを防水すべき構造物に接合固定する
ことにより、改修後の構造物において良好な美観を長期
維持できるとともに、防水シートとしての耐久性をも十
分に付与できることを見出すに至り、この発明を完成し
たものである。In order to achieve the above object, the present inventors have earnestly studied and as a result, the vinyl chloride containing a large amount of a plasticizer on the contact surface of the repair joint piece with the existing waterproof sheet. A system resin layer is provided, and the repair joint piece is placed on the existing waterproof sheet in such a manner that the resin layer comes into contact with the existing waterproof sheet to be repaired, and the repair waterproof sheet is placed through the joint piece. By joining and fixing to a structure to be waterproofed, it was possible to maintain a good aesthetic appearance in the structure after repair for a long period of time and also to provide sufficient durability as a waterproof sheet, and completed the present invention. Is.
【０００８】即ち、この発明に係るシート防水構造物の
改修用接合片は、改修用防水シートを防水すべき構造物
に接合固定するために、改修対象の既設防水シート上に
載置した状態で用いられるシート防水構造物の改修用接
合片であって、接合片における既設防水シートと接触す
る面に、可塑剤を多量に含有した塩化ビニル系樹脂組成
物からなる修復用樹脂層が設けられていることを特徴と
するものである。That is, in order to join and fix the repair waterproof sheet to the structure to be waterproofed, the repair joint of the waterproof sheet structure according to the present invention is placed on the existing waterproof sheet to be repaired. A repairing joint piece for a sheet waterproof structure used, wherein a surface of the joint piece that comes into contact with the existing waterproof sheet is provided with a repairing resin layer made of a vinyl chloride resin composition containing a large amount of a plasticizer. It is characterized by being present.
【０００９】また、この発明に係るシート防水構造物の
改修方法は、構造物の防水すべき表面に、既設防水シー
トが絶縁工法により敷設施工されたシート防水構造物の
改修方法であって、塩化ビニル系樹脂１００重量部に対
し、可塑剤５０〜３００重量部を含有する塩化ビニル系
樹脂組成物からなる修復用樹脂層が片面に設けられた改
修用接合片を、該修復用樹脂層が既設防水シートに接触
する態様で既設防水シート上に配置し前記構造物に固定
する工程と、改修用防水シートを前記既設防水シート上
に張り渡して前記接合片に接着する工程とを含むことを
特徴とするものである。The sheet waterproof structure repair method according to the present invention is a sheet waterproof structure repair method in which an existing waterproof sheet is laid on the surface of the structure to be waterproof by an insulation method. A repair joint piece having a repairing resin layer made of a vinyl chloride resin composition containing 50 to 300 parts by weight of a plasticizer with respect to 100 parts by weight of a vinyl resin is provided on one surface of the repairing resin layer. And a step of arranging the waterproof sheet on the existing waterproof sheet and fixing it to the structure, and a step of stretching the repair waterproof sheet on the existing waterproof sheet and adhering it to the joint piece. It is what
【００１０】改修用接合片における既設防水シートとの
接触面に可塑剤を多量に含有した修復用樹脂層が設けら
れているので、この改修用接合片を、修復用樹脂層が既
設防水シートと接する態様で載置して改修施工すること
により、この修復用樹脂層から、既設防水シートにおけ
る改修用接合片を支持する領域に確実にしかも早期に可
塑剤が供給される。従って、改修完了後に既設防水シー
トの前記支持領域に縮みや皺が発生することが確実に防
止され、ひいては新設の改修用接合片が浮き上がること
が確実に防止される。また、修復用樹脂層から、既設防
水シートの前記支持領域以外の他の領域にも徐々に可塑
剤が供給されるから、既設防水シート中に欠乏していた
可塑剤が補充されて、劣化既設防水シートの物性、特に
柔軟性が回復するとともに張力が取り除かれ、防水シー
トとしての耐久性が向上されるとともに、劣化既設防水
シートの張力に起因する悪影響が新設の改修用防水シー
トに及ぶことも防止される。更に、予め修復用樹脂層が
接合片に一体化されているから、施工が容易であり施工
コストも少なく、かつ施工工期も短くて済む。Since the repairing resin layer containing a large amount of the plasticizer is provided on the contact surface of the repair joint piece with the existing waterproof sheet, this repair joint piece has the repairing resin layer as the existing waterproof sheet. By placing and repairing the resin in a contacting manner, the plasticizer is reliably and early supplied from the repairing resin layer to the region of the existing waterproof sheet that supports the repairing joint piece. Therefore, it is possible to surely prevent shrinkage and wrinkles from occurring in the support region of the existing waterproof sheet after the completion of the repair, and thus it is possible to surely prevent the new repair joint piece from rising. In addition, since the plasticizer is gradually supplied from the repairing resin layer to the area other than the support area of the existing waterproof sheet, the plasticizer lacking in the existing waterproof sheet is replenished and deteriorated. The physical properties of the tarpaulin, in particular the flexibility, are restored and the tension is removed to improve the durability as a tarpaulin, and the adverse effects due to the tension of the deteriorated tarpaulin may affect the new repair tarpaulin. To be prevented. Furthermore, since the restoration resin layer is previously integrated with the joining piece, the construction is easy, the construction cost is low, and the construction period is short.
【００１１】[0011]
【発明の実施の形態】この発明に係るシート防水構造物
の改修用接合片は、防水すべき構造物に防水シートが絶
縁工法により敷設施工されたシート防水構造物を改修す
べく、新たな改修用防水シートを前記既設の防水シート
上に敷設施工するのに用いられる接合片であって、より
具体的には、新たな改修用防水シートを前記構造物に接
合固定するために、改修対象の既設防水シート上に載置
した状態で用いられる接合片である。BEST MODE FOR CARRYING OUT THE INVENTION A repairing joint piece for a waterproof structure of a sheet according to the present invention is a new repairing piece for repairing a waterproof sheet structure in which a waterproof sheet is laid by an insulating method on a structure to be waterproofed. A joining piece used for laying and constructing a waterproof tarpaulin on the existing tarpaulin, more specifically, in order to join and fix a new tarpaulin for repair to the structure, It is a joining piece used while being placed on an existing waterproof sheet.
【００１２】図１にこの発明の一実施形態に係るシート
防水構造物の改修用接合片（１）の断面図を示す。本実
施形態の改修用接合片（１）は、中央部に固着具挿入孔
（２ａ）が設けられた円板状の接合片本体（２）の片面
に、修復用樹脂層（３）が設けられたものである。固着
具挿入孔（２ａ）は、改修の際に、構造物（１１）に接
合固定するための開脚釘、カールプラグ等の固着手段を
挿入嵌合するための孔である。FIG. 1 is a cross-sectional view of a repair joint piece (1) for a waterproof sheet structure according to an embodiment of the present invention. In the repair joint piece (1) of the present embodiment, a repairing resin layer (3) is provided on one surface of a disc-shaped joint piece body (2) having a fastener insertion hole (2a) in the center. It has been done. The fixing tool insertion hole (2a) is a hole for inserting and fitting fixing means such as an open leg nail and a curl plug for joining and fixing to the structure (11) at the time of repair.
【００１３】この発明において、接合片本体（２）の形
状としては、通常、本実施形態のような円板状などの板
状のものが用いられる。例えば、硬質または半硬質の合
成樹脂板、金属板、あるいは塩化ビニル樹脂が片面もし
くは両面に被覆された鋼板（塩ビ鋼板）等の板材からな
るもの等が挙げられる。もちろん形状はこのような板状
のものに限定されるものではなく、構造物躯体への固定
のための開脚釘、カールプラグ等の固着手段が一体に形
成されたものであっても良い。In the present invention, as the shape of the joining piece main body (2), a plate-like member such as the disc-like member of this embodiment is usually used. Examples thereof include a hard or semi-hard synthetic resin plate, a metal plate, and a plate material such as a steel plate (vinyl chloride steel plate) coated with vinyl chloride resin on one side or both sides. Of course, the shape is not limited to such a plate-like shape, and fixing means such as an open leg nail or a curl plug for fixing to the structure body may be integrally formed.
【００１４】この発明において、修復用樹脂層（３）
は、可塑剤を多量に含有した塩化ビニル系樹脂組成物か
ら構成される。この塩化ビニル系樹脂としては、特に限
定されるものではないが、例えば塩化ビニルの単独重合
体の他、塩化ビニルと、酢酸ビニル、エチレン、プロピ
レン等との二元または三元以上の共重合体等を好適に使
用でき、また２種以上併用したものも支障なく使用でき
る。In the present invention, the restoration resin layer (3)
Is composed of a vinyl chloride resin composition containing a large amount of a plasticizer. The vinyl chloride resin is not particularly limited, but for example, a homopolymer of vinyl chloride, or a binary or ternary or more copolymer of vinyl chloride and vinyl acetate, ethylene, propylene or the like. And the like can be preferably used, and a combination of two or more can also be used without any trouble.
【００１５】また、前記修復用樹脂層（３）における可
塑剤の含有量は、塩化ビニル系樹脂１００重量部に対
し、５０〜３００重量部とするのが好ましい。可塑剤量
が５０重量部未満では、劣化既設防水シート（１４）へ
の可塑剤の十分な移行量を確保することができず、ひい
ては既設防水シート（１４）の柔軟性の回復が不十分と
なるので、好ましくない。一方、可塑剤量が３００重量
部を超えると、既設防水シート（１４）の表面が著しく
膨潤し、表面状態が悪化するとともに、既設防水シート
（１４）の機械的強度が低下するので、好ましくない。
最も好ましい可塑剤の含有量は、塩化ビニル系樹脂１０
０重量部に対し、可塑剤１５０〜２５０重量部である。The content of the plasticizer in the restoration resin layer (3) is preferably 50 to 300 parts by weight with respect to 100 parts by weight of the vinyl chloride resin. When the amount of the plasticizer is less than 50 parts by weight, it is impossible to secure a sufficient amount of the plasticizer to be transferred to the deteriorated existing waterproof sheet (14), and the flexibility of the existing waterproof sheet (14) is not sufficiently recovered. Therefore, it is not preferable. On the other hand, when the amount of the plasticizer exceeds 300 parts by weight, the surface of the existing waterproof sheet (14) is significantly swollen, the surface condition is deteriorated, and the mechanical strength of the existing waterproof sheet (14) is deteriorated, which is not preferable. .
The most preferable content of the plasticizer is vinyl chloride resin 10
The amount of plasticizer is 150 to 250 parts by weight with respect to 0 parts by weight.
【００１６】使用する可塑剤の種類は、特に限定される
ものではなく、最も汎用的なＤＢＰ、ＤＨＰ、ＤＯＰ、
ＤＩＯＰ、ＤＩＤＰ等のフタル酸エステル類、ＤＯＡ、
ＤＯＺ、ＤＯＳ等の直鎖二塩基酸エステル類、ＴＣＰに
代表されるリン酸エステル類等を任意に選択使用するこ
とができる。The type of plasticizer used is not particularly limited, and the most general-purpose DBP, DHP, DOP,
Phthalates such as DIOP and DIDP, DOA,
Linear dibasic acid esters such as DOZ and DOS, and phosphoric acid esters typified by TCP can be arbitrarily selected and used.
【００１７】上記塩化ビニル系樹脂組成物には、上記成
分の他に酸化チタン、クレー、シリカ、炭酸カルシウム
等の充填剤、金属石鹸系、塩基性鉛系等の安定剤、着色
剤、難燃剤、繊維強化剤、改質剤等の添加剤を適宜配合
しても良い。In addition to the above components, the vinyl chloride resin composition contains fillers such as titanium oxide, clay, silica, calcium carbonate, stabilizers such as metal soaps and basic lead, stabilizers, colorants and flame retardants. Additives such as fiber reinforcing agents and modifiers may be appropriately mixed.
【００１８】上記修復用樹脂層（３）の厚さは、０．３
〜２．０ｍｍとするのが好ましい。０．３ｍｍ未満では
既設防水シート（１４）への可塑剤の十分な移行量を確
保することができず、ひいては既設防水シート（１４）
の柔軟性の回復が不十分となるので、好ましくない。一
方２．０ｍｍを超えるとコストの増大を招くので好まし
くない。The thickness of the restoration resin layer (3) is 0.3.
It is preferable to be set to 2.0 mm. If it is less than 0.3 mm, it is not possible to secure a sufficient amount of transfer of the plasticizer to the existing waterproof sheet (14), and eventually the existing waterproof sheet (14).
This is not preferable because the recovery of the flexibility of the above becomes insufficient. On the other hand, if it exceeds 2.0 mm, the cost increases, which is not preferable.
【００１９】この発明の改修用接合片（１）を用いた既
設シート防水構造物の改修は、例えば次のようにして行
うことができる。The repair of the existing waterproof sheet structure using the repair joint piece (1) of the present invention can be carried out as follows, for example.
【００２０】まず本実施形態が適用されるシート防水構
造物は、絶縁工法により防水施工されたものである。す
なわち図６及び図７に示すように、ビルディング等の構
造物（１１）における陸屋根のような防水すべき表面
に、部分的に、多数の円板状の第１接合片（１２）が、
開脚釘、カールプラグ等の機械的固着手段からなる第１
固着具（１３）を用いて構造物（１１）の躯体に固定さ
れるとともに、既設防水シート（１４）が、構造物（１
１）表面上に張り渡された状態で、各第１接合片（１
２）に接着剤により接着されて、シート防水構造物が形
成されている。First, the waterproof sheet structure to which this embodiment is applied is waterproofed by an insulating method. That is, as shown in FIGS. 6 and 7, on a surface to be waterproofed such as a flat roof in a structure (11) such as a building, a large number of disc-shaped first joining pieces (12) are partially formed.
First consisting of mechanical fixing means such as open leg nails and curl plugs
The existing waterproof sheet (14) is fixed to the body of the structure (11) using the fixing tool (13), and the existing waterproof sheet (14) is attached to the structure (1).
1) Each first joining piece (1
The sheet waterproof structure is formed by adhering to 2) with an adhesive.
【００２１】そして、このようなシート防水構造物にお
いて、長期使用により既設防水シート（１４）が劣化し
た際等に、この発明の改修用接合片（１）を用いて、本
実施形態の改修方法が行われる。Then, in such a waterproof sheet structure, when the existing waterproof sheet (14) is deteriorated due to long-term use, etc., the repairing method of the present embodiment is carried out by using the repair joint piece (1) of the present invention. Is done.
【００２２】まず経年劣化した既設防水シート（１４）
の表面を必要に応じて簡単に清浄し、表面に付着した砂
等の異物を取り除く。First, the existing waterproof sheet (14) that has deteriorated over time
The surface of the can be easily cleaned as necessary to remove foreign matter such as sand adhering to the surface.
【００２３】次に、図３及び図５（ａ）に示すように、
既設防水シート（１４）上に改修用接合片（１）を固定
する。すなわち既設防水シート（１４）上に改修用接合
片（１）を、その修復用樹脂層（３）が既設防水シート
（１４）に接触する状態で分散させて配置して、該接合
片（１）の固着具挿入孔（２ａ）及び既設防水シート
（１４）に、開脚釘、カールプラグ等の機械的固着手段
からなる第２固着具（２３）を、それぞれ挿入、貫通し
て、構造物（１１）の躯体に固定することにより、改修
用接合片（１）を既設防水シート（１４）上に固定す
る。Next, as shown in FIGS. 3 and 5 (a),
The repair joint piece (1) is fixed on the existing waterproof sheet (14). That is, the repair joint pieces (1) are arranged on the existing waterproof sheet (14) in a state where the repairing resin layer (3) is in contact with the existing waterproof sheet (14), and the joint pieces (1) are arranged. 2) and the existing waterproof sheet (14) are inserted and pierced with the second fasteners (23), which are mechanical fasteners such as open-leg nails and curl plugs, respectively. The repair joint piece (1) is fixed on the existing waterproof sheet (14) by fixing it to the body of (11).
【００２４】続いて図４及び図５（ｂ）に示すように、
改修用防水シート（２４）を、既設防水シート（１４）
を上方から被覆するように配置し、更にその改修用防水
シート（２４）を張り渡した状態で、改修用防水シート
（２４）の所要領域を、改修用接合片（１）に接着剤に
よりそれぞれ接着し、こうして本実施形態の改修作業が
完了する。Subsequently, as shown in FIGS. 4 and 5 (b),
Refurbishment tarpaulin (24), existing tarpaulin (14)
Are arranged so as to cover from above, and in a state in which the repair waterproof sheet (24) is stretched, the required areas of the repair waterproof sheet (24) are respectively attached to the repair joint piece (1) with an adhesive. Bonding is performed, and thus the repair work of this embodiment is completed.
【００２５】上記改修用防水シート（２４）としては、
既設防水シート（１４）と同様で、軟質ポリ塩化ビニル
樹脂、ポリエチレン樹脂、ポリプロピレン樹脂等の熱可
塑性樹脂シートからなるものの他、非加硫ゴム系シー
ト、ゴムアスファルト系シート等を好適に使用でき、中
でも特に、軟質ポリ塩化ビニル樹脂シートからなるもの
は、優れた接着性が得られるため、より一層好適に使用
することができる。更に、これら防水シート（１４）
（２４）は厚さが１．０〜２．０ｍｍのものを使用する
のが一般的である。As the above-mentioned repair waterproof sheet (24),
Similar to the existing waterproof sheet (14), a thermoplastic resin sheet such as a soft polyvinyl chloride resin, a polyethylene resin, a polypropylene resin, a non-vulcanized rubber sheet, or a rubber asphalt sheet can be preferably used. Above all, a sheet made of a soft polyvinyl chloride resin sheet can be used more preferably because it has excellent adhesiveness. Furthermore, these waterproof sheets (14)
It is general to use (24) having a thickness of 1.0 to 2.0 mm.
【００２６】また改修用防水シート（２４）を改修用接
合片（１）に接着するための接着剤としては、既設防水
シート（１４）を第１接合片（１２）に接着するための
接着剤と同様で、例えばエポキシ系、ウレタン系、ゴム
系接着剤等を好適に使用することができる。特に防水シ
ート（１４）（２４）と、接合片（１２）（１）の接合
面とが塩化ビニル樹脂からなる場合には、テトラヒドロ
フラン（ＴＨＦ）単独、あるいはＴＨＦに塩化ビニル樹
脂を溶解した溶剤型接着剤を使用するのが望ましく、そ
の使用により、耐久性に優れた接着効果を得ることがで
きる。As the adhesive for adhering the repair waterproof sheet (24) to the repair joint piece (1), an adhesive for adhering the existing waterproof sheet (14) to the first joint piece (12). Similarly to the above, for example, epoxy-based, urethane-based, and rubber-based adhesives can be preferably used. Especially when the waterproof sheet (14) (24) and the joint surface of the joint piece (12) (1) are made of vinyl chloride resin, tetrahydrofuran (THF) alone or a solvent type in which vinyl chloride resin is dissolved in THF It is desirable to use an adhesive, and by using it, an adhesive effect with excellent durability can be obtained.
【００２７】このような改修方法によれば、改修用接合
片（１）の修復用樹脂層（３）が既設防水シート（１
４）に接触する態様で施工されるから、この修復用樹脂
層（３）から既設防水シート（１４）における改修用接
合片（１）を支持する領域に確実にかつ早期に可塑剤が
供給される。従って、改修完了後に既設防水シート（１
４）の前記支持領域における縮みや皺の発生を確実に防
止することができる。これにより新設の改修用接合片
（１）の浮き上がりを防止することができるので、改修
されたシート防水構造物において良好な美観を長期に亘
って維持することができる。According to such a repairing method, the repairing resin layer (3) of the repairing joint piece (1) has the existing waterproof sheet (1).
4), the plasticizer is reliably and early supplied from the repairing resin layer (3) to the region of the existing waterproof sheet (14) supporting the repairing joint piece (1). It Therefore, the existing waterproof sheet (1
It is possible to reliably prevent the occurrence of shrinkage and wrinkles in the support region of 4). As a result, it is possible to prevent the newly-installed repair joint piece (1) from rising, so that it is possible to maintain a good aesthetic appearance in the repaired waterproof structure for a long period of time.
【００２８】また、修復用樹脂層（３）から、既設防水
シート（１４）の前記支持領域以外の他の領域にも徐々
に可塑剤が供給されるので、既設防水シート（１４）に
おける可塑剤の欠乏状態を解消することができ、これに
より劣化した既設防水シート（１４）の物性、特に柔軟
性を回復させることができて、その張力を取り除くこと
ができるから、防水シートとしての耐久性を向上させる
ことができる。かつ既設防水シート（１４）の張力に起
因した悪影響が新設の改修用防水シート（２４）に及ぶ
ことがない。Further, since the plasticizer is gradually supplied from the repairing resin layer (3) to a region other than the supporting region of the existing waterproof sheet (14), the plasticizer in the existing waterproof sheet (14) is also supplied. Of the existing waterproof sheet (14), in particular, the flexibility of the existing waterproof sheet (14) can be recovered and the tension can be removed, so that the durability of the waterproof sheet can be improved. Can be improved. Moreover, the adverse effect of the tension of the existing waterproof sheet (14) does not affect the newly installed waterproof sheet (24) for repair.
【００２９】更に、修復用樹脂層（３）が改修用接合片
に一体化されているから、効率よく改修を行うことがで
き、改修期間の短縮及びコスト低減を図ることができ
る。Further, since the repairing resin layer (3) is integrated with the repairing joint piece, the repairing can be carried out efficiently, and the repairing period and cost can be shortened.
【００３０】[0030]
【実施例】次に、この発明の具体的実施例について説明
する。EXAMPLES Next, specific examples of the present invention will be described.
【００３１】＜実施例１＞板面中央部に固着具挿入孔が
設けられた厚さ０．６ｍｍのディスク状鋼板の片面に
０．５ｍｍ厚さの塩化ビニル樹脂フィルムが積層されて
なる接合片本体（塩ビ被覆鋼板）のもう一方の面に、下
記配合により調製した塩化ビニル系樹脂組成物からなる
厚さ１．５ｍｍの修復用樹脂層を積層して、改修用接合
片を製作した。<Example 1> A joining piece in which a vinyl chloride resin film having a thickness of 0.5 mm is laminated on one side of a disk-shaped steel sheet having a thickness of 0.6 mm and having a fastener insertion hole formed in the central portion of the plate surface. On the other surface of the main body (PVC-coated steel sheet), a repairing resin layer having a thickness of 1.5 mm made of a vinyl chloride resin composition prepared by the following composition was laminated to manufacture a repairing joint piece.
【００３２】そして、建築物の屋上に絶縁工法により張
設施工された軟質塩化ビニル樹脂製防水シート（厚さ
１．５ｍｍ）であって、施工後陽光暴露下に約１５年を
経過した防水シートを経年劣化防水シートのサンプルと
して使用し、これの表面における図３に示すような第１
接合片間の所定領域上に前記改修用接合片を分散させて
配置した。この際、改修用接合片の修復用樹脂層が既設
防水シート表面に接するように配置した。A soft vinyl chloride resin waterproof sheet (thickness: 1.5 mm) stretched on the roof of a building by an insulating method, the waterproof sheet having been exposed to sunlight for about 15 years after construction. Is used as a sample of the aged deterioration waterproof sheet, and the first surface as shown in FIG.
The repair joint pieces were dispersed and arranged on a predetermined region between the joint pieces. At this time, the repairing resin layer of the repairing joint piece was arranged so as to contact the surface of the existing waterproof sheet.
【００３３】次いで、開脚釘からなる第２固着具を、接
合片の固着具挿入孔、更に既設防水シートに貫通して、
構造物の躯体に固定することにより改修用接合片を既設
防水シート上に固定し（図３）、更に軟質ポリ塩化ビニ
ル樹脂からなる改修用防水シートを、既設防水シートを
上方から被覆するように配置して張り渡した状態で、こ
の改修用防水シートの所要領域を改修用接合片に接着剤
（テトラヒドロフラン）によりそれぞれ接着して（図
４）、改修を行った。Next, the second fastener made of the open-leg nail is pierced through the fastener insertion hole of the joint piece and further through the existing waterproof sheet,
By fixing the joint piece for repair to the existing waterproof sheet by fixing it to the frame of the structure (Fig. 3), the waterproof tarpaulin made of soft polyvinyl chloride resin should be covered from above the existing waterproof sheet. In a state where the waterproof sheet for repair was arranged and stretched, the required areas of the waterproof sheet for repair were bonded to the repair joint pieces with an adhesive (tetrahydrofuran) (Fig. 4) to carry out repair.
【００３４】（塩化ビニル系樹脂組成物）塩化ビニル樹
脂１００重量部、可塑剤（ＤＯＰ）２００重量部、充填
材（酸化チタン）１０重量部を配合して得られる塩化ビ
ニル樹脂組成物。(Vinyl chloride resin composition) A vinyl chloride resin composition obtained by mixing 100 parts by weight of a vinyl chloride resin, 200 parts by weight of a plasticizer (DOP), and 10 parts by weight of a filler (titanium oxide).
【００３５】＜評価＞改修作業完了後３０日を経過した
時のシート防水構造物の上面、即ち最上層の新設の改修
用防水シートの外観（しわ発生の有無、膨れの有無、接
合片の浮き上がりの有無）を観察した。<Evaluation> Appearance of the new waterproof sheet for repair at the upper surface of the waterproof sheet structure, that is, the uppermost layer 30 days after the completion of the repair work (whether wrinkles are generated, whether there is swelling, and the joint piece is lifted up). Was observed).
【００３６】一方、改修作業完了後３０日を経過した時
に既設防水シートのみを切り出し、これの機械的性質を
測定し（ＪＩＳ Ａ６００８）、防水シートの初期物
性、及び経年劣化時の物性と比較した。これらの結果を
表に示す。On the other hand, when 30 days have passed after the completion of the repair work, only the existing waterproof sheet was cut out and its mechanical properties were measured (JIS A6008) and compared with the initial physical properties of the waterproof sheet and the physical properties after deterioration over time. . The results are shown in the table.
【００３７】[0037]
【表１】 [Table 1]
【００３８】表１に示されるとおり、改修後３０日を経
過した時点において既に、経年防水シートは伸び率を相
当程度に回復するとともに、改修後のシート防水構造物
の外観も、しわ発生や膨れ、浮き上がり等もなく良好で
あった。As shown in Table 1, after 30 days from the repair, the aged waterproof sheet has already recovered its elongation rate to a considerable extent, and the appearance of the waterproof sheet structure after the repair has wrinkles and swelling. It was good with no rising.
【００３９】[0039]
【発明の効果】以上のように、この発明のシート防水構
造物の改修用接合片は、可塑剤を多量に含有した修復用
樹脂層が設けられているので、この修復用樹脂層が既設
防水シートと接する態様で載置して改修施工すれば、該
修復用樹脂層から、既設防水シートにおける改修用接合
片を支持する領域に確実にかつ早期に可塑剤が供給され
るので、該支持領域における縮みや皺の発生を防止で
き、ひいては新設の改修用接合片が浮き上がることを確
実に防止できる。また、修復用樹脂層から、既設防水シ
ートにおける前記支持領域以外の他の領域にも徐々に可
塑剤が供給されるので、既設防水シートの物性、特に柔
軟性を回復させることができ、ひいては防水シートとし
ての耐久性を向上させることができる。更に、修復用樹
脂層が一体化された構成であるから、施工が容易であり
施工コストも少なく、かつ施工工期も短くて済む。As described above, since the repair joint of the waterproof sheet structure of the present invention is provided with the repairing resin layer containing a large amount of the plasticizer, this repairing resin layer is used for the existing waterproofing. If the repairing resin layer is placed in a state of contacting the sheet and repaired, the plasticizer is surely and early supplied from the repairing resin layer to the area supporting the repairing joint piece of the existing waterproof sheet. It is possible to prevent the occurrence of shrinkage and wrinkles, and it is possible to reliably prevent the newly installed repair joint piece from rising. In addition, since the plasticizer is gradually supplied from the repairing resin layer to the area other than the supporting area in the existing waterproof sheet, the physical properties of the existing waterproof sheet, particularly the flexibility, can be restored, and the waterproof property can be improved. The durability as a sheet can be improved. Further, since the restoration resin layer is integrated, the construction is easy, the construction cost is low, and the construction period is short.
【００４０】上記接合片において、修復用樹脂層が、塩
化ビニル系樹脂１００重量部に対し、可塑剤５０〜３０
０重量部を含有する塩化ビニル系樹脂組成物からなる場
合には、既設防水シートの表面状態を悪化させたり機械
的強度を低下させることなく、既設防水シートの特性、
特に柔軟性を十分に回復させることができる。In the above-mentioned joining piece, the repairing resin layer contains 50 to 30 parts of the plasticizer with respect to 100 parts by weight of the vinyl chloride resin.
When the vinyl chloride-based resin composition contains 0 part by weight, the characteristics of the existing waterproof sheet can be obtained without deteriorating the surface condition of the existing waterproof sheet or reducing the mechanical strength,
In particular, the flexibility can be sufficiently restored.
【００４１】また、この発明の改修方法によれば、既設
防水シートに接触させて配置した接合片の修復用樹脂層
から、既設防水シートにおける改修用接合片を支持する
領域に確実にかつ早期に可塑剤を供給補充させることが
できるので、該支持領域における縮みや皺の発生を防止
でき、ひいては新設の改修用接合片が浮き上がることを
確実に防止できる。また、既設防水シートにおける前記
支持領域以外の他の領域にも徐々に可塑剤が供給される
ので、既設防水シートの物性、特に柔軟性を回復させる
ことができ、ひいては防水シートとしての耐久性を向上
させることができる。更に、改修用接合片に修復用樹脂
層が一体化されているから、改修施工が容易であり施工
コストも少なく、かつ施工工期も短くて済む利点があ
る。Further, according to the repairing method of the present invention, the repairing resin layer of the joining piece arranged in contact with the existing waterproof sheet can be reliably and early in the region of the existing waterproofing sheet supporting the repairing joining piece. Since the plasticizer can be supplied and replenished, it is possible to prevent the occurrence of shrinkage and wrinkles in the support region, and it is possible to reliably prevent the newly-improved joint piece from rising. Further, since the plasticizer is gradually supplied to the area other than the support area in the existing waterproof sheet, the physical properties of the existing waterproof sheet, particularly the flexibility, can be restored, and the durability as the waterproof sheet can be improved. Can be improved. Further, since the repairing resin layer is integrated with the repairing joint piece, there is an advantage that the repairing work is easy, the working cost is low, and the working period is short.
【図１】この発明の一実施形態に係る改修用接合片を示
す斜視図である。FIG. 1 is a perspective view showing a repair joint piece according to an embodiment of the present invention.
【図２】図１におけるＡ−Ａ線の断面図である。FIG. 2 is a cross-sectional view taken along the line AA in FIG.
【図３】この発明の改修方法が適用されたシート防水構
造物を改修用接合片固定直後の状態で示す斜視図であ
る。FIG. 3 is a perspective view showing a waterproof sheet structure to which the repairing method of the present invention has been applied, in a state immediately after fixing the repairing joint piece.
【図４】上記シート防水構造物を改修施工完了後の状態
で示す斜視図である。FIG. 4 is a perspective view showing the waterproof sheet structure after completion of repair work.
【図５】上記シート防水構造物を示す断面図であって、
同図（ａ）は改修用接合片固定直後の状態における断面
図、同図（ｂ）は改修施工完了後の状態における断面図
である。FIG. 5 is a cross-sectional view showing the waterproof structure for a sheet,
The figure (a) is sectional drawing in the state just after fixing the repair joint piece, and the figure (b) is sectional drawing in the state after completion of the repair construction.
【図６】絶縁工法により施工されたシート防水構造物を
示す斜視図である。FIG. 6 is a perspective view showing a waterproof sheet structure constructed by an insulating method.
【図７】絶縁工法により施工されたシート防水構造物を
示す断面図である。FIG. 7 is a cross-sectional view showing a waterproof sheet structure constructed by an insulating method.
１…改修用接合片 ２…接合片本体 ３…修復用樹脂層 １１…構造物 １４…既設防水シート ２４…改修用防水シート 1 ... Refurbishment joint piece 2 ... Bonding piece body 3 ... Restoration resin layer 11 ... Structure 14 ... Existing tarpaulin 24 ... Renovation tarpaulin
Claims (3)
接合固定するために、改修対象の既設防水シート上に載
置した状態で用いられるシート防水構造物の改修用接合
片であって、 接合片における既設防水シートと接触する面に、可塑剤
を多量に含有した塩化ビニル系樹脂組成物からなる修復
用樹脂層が設けられていることを特徴とするシート防水
構造物の改修用接合片。1. A repair joint for a waterproof structure for a sheet, which is used in a state of being mounted on an existing waterproof sheet to be repaired in order to bond and fix the waterproof sheet for repair to a structure to be waterproofed, A joint piece for repairing a sheet waterproof structure, characterized in that a surface of the joint piece that comes into contact with an existing waterproof sheet is provided with a repairing resin layer made of a vinyl chloride resin composition containing a large amount of a plasticizer. .
１００重量部に対し、可塑剤５０〜３００重量部を含有
する塩化ビニル系樹脂組成物からなる請求項１に記載の
シート防水構造物の改修用接合片。2. The waterproof sheet structure according to claim 1, wherein the repairing resin layer comprises a vinyl chloride resin composition containing 50 to 300 parts by weight of a plasticizer with respect to 100 parts by weight of the vinyl chloride resin. Refurbishment joint piece.
り敷設された既設防水シートにより防水施工されたシー
ト防水構造物の改修方法であって、 塩化ビニル系樹脂１００重量部に対し、可塑剤５０〜３
００重量部を含有する塩化ビニル系樹脂組成物からなる
修復用樹脂層が片面に設けられた改修用接合片を、該修
復用樹脂層が既設防水シートに接触する態様で既設防水
シート上に配置し前記構造物に固定する工程と、 改修用防水シートを前記既設防水シート上に張り渡して
前記改修用接合片に接着する工程とを含むことを特徴と
するシート防水構造物の改修方法。3. A method for repairing a sheet waterproof structure waterproofed by an existing waterproof sheet laid on a surface of a structure to be waterproof by an insulating method, wherein a plasticizer is added to 100 parts by weight of vinyl chloride resin. 50-3
Arranging a repairing joint piece having a repairing resin layer made of a vinyl chloride resin composition containing 100 parts by weight on one side on the existing waterproofing sheet in such a manner that the repairing resin layer contacts the existing waterproofing sheet. A method of repairing a waterproof sheet structure, comprising: a step of fixing the waterproof sheet to the structure; and a step of stretching the waterproof sheet for repair on the existing waterproof sheet and adhering the waterproof sheet to the joint piece for repair.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23837898A JP4056634B2 (en) | 1998-08-25 | 1998-08-25 | Joint for repairing waterproof sheet structure and method for repairing waterproof sheet structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23837898A JP4056634B2 (en) | 1998-08-25 | 1998-08-25 | Joint for repairing waterproof sheet structure and method for repairing waterproof sheet structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000064521A true JP2000064521A (en) | 2000-02-29 |
| JP4056634B2 JP4056634B2 (en) | 2008-03-05 |
Family
ID=17029306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23837898A Expired - Fee Related JP4056634B2 (en) | 1998-08-25 | 1998-08-25 | Joint for repairing waterproof sheet structure and method for repairing waterproof sheet structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4056634B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002242383A (en) * | 2001-02-20 | 2002-08-28 | Aaki Yamade Kk | Method for repairing waterproofing membrane and waterproof structure |
| JP2006002524A (en) * | 2004-06-21 | 2006-01-05 | Tsutsunaka Plast Ind Co Ltd | Deterioration diagnostic method for waterproof sheet, waterproof sheet sampling tool adapted for diagnostic method and waterproof sheet construction |
| JP2010037756A (en) * | 2008-08-01 | 2010-02-18 | Kazuhide Ukekawa | Building backing sheet |
| JP2015021298A (en) * | 2013-07-19 | 2015-02-02 | 積水ハウス株式会社 | Foundation structure of rooftop installation and foundation construction method |
| JP2017128988A (en) * | 2016-01-22 | 2017-07-27 | ロンシール工業株式会社 | Modification structure for sheet waterproof structure and modification method for sheet waterproof structure |
-
1998
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002242383A (en) * | 2001-02-20 | 2002-08-28 | Aaki Yamade Kk | Method for repairing waterproofing membrane and waterproof structure |
| JP4634625B2 (en) * | 2001-02-20 | 2011-02-16 | アーキヤマデ株式会社 | Waterproof layer repair method and waterproof structure |
| JP2006002524A (en) * | 2004-06-21 | 2006-01-05 | Tsutsunaka Plast Ind Co Ltd | Deterioration diagnostic method for waterproof sheet, waterproof sheet sampling tool adapted for diagnostic method and waterproof sheet construction |
| JP4608962B2 (en) * | 2004-06-21 | 2011-01-12 | 住友ベークライト株式会社 | Method for diagnosing deterioration of waterproof sheet, jig for collecting waterproof sheet used in this diagnosis method, and laying structure of waterproof sheet |
| JP2010037756A (en) * | 2008-08-01 | 2010-02-18 | Kazuhide Ukekawa | Building backing sheet |
| JP2015021298A (en) * | 2013-07-19 | 2015-02-02 | 積水ハウス株式会社 | Foundation structure of rooftop installation and foundation construction method |
| JP2017128988A (en) * | 2016-01-22 | 2017-07-27 | ロンシール工業株式会社 | Modification structure for sheet waterproof structure and modification method for sheet waterproof structure |
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| Publication number | Publication date |
|---|---|
| JP4056634B2 (en) | 2008-03-05 |
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