JPH0893042A - Primarily water stopping material for precast concrete case - Google Patents
Primarily water stopping material for precast concrete caseInfo
- Publication number
- JPH0893042A JPH0893042A JP6229595A JP22959594A JPH0893042A JP H0893042 A JPH0893042 A JP H0893042A JP 6229595 A JP6229595 A JP 6229595A JP 22959594 A JP22959594 A JP 22959594A JP H0893042 A JPH0893042 A JP H0893042A
- Authority
- JP
- Japan
- Prior art keywords
- water blocking
- box
- water
- primary
- embedded
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 96
- 239000000463 material Substances 0.000 title claims abstract description 58
- 239000011178 precast concrete Substances 0.000 title claims abstract description 4
- 230000000903 blocking effect Effects 0.000 claims description 65
- 229920001971 elastomer Polymers 0.000 claims description 8
- 239000004636 vulcanized rubber Substances 0.000 claims description 4
- 229920005549 butyl rubber Polymers 0.000 claims description 3
- 238000004078 waterproofing Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 abstract 4
- 238000010168 coupling process Methods 0.000 abstract 4
- 238000005859 coupling reaction Methods 0.000 abstract 4
- 230000002265 prevention Effects 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 14
- 238000010586 diagram Methods 0.000 description 10
- 239000000853 adhesive Substances 0.000 description 8
- 230000001070 adhesive effect Effects 0.000 description 8
- 239000004567 concrete Substances 0.000 description 8
- 238000010276 construction Methods 0.000 description 5
- 230000005484 gravity Effects 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 239000003566 sealing material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- YACLQRRMGMJLJV-UHFFFAOYSA-N chloroprene Chemical compound ClC(=C)C=C YACLQRRMGMJLJV-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Landscapes
- Sewage (AREA)
- Lining And Supports For Tunnels (AREA)
- Building Environments (AREA)
- Gasket Seals (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、複数のプレキャストコ
ンクリート函（以下、ＰＣ函という）を連結することに
より構築される共同溝、枡等の連結部を水密にするた
め、ＰＣ函の連結端面に設けた止水部から構成されるＰ
Ｃ函用一次止水材に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting end face of a PC box in order to make a connecting portion such as a common groove and a box constructed by connecting a plurality of precast concrete boxes (hereinafter referred to as PC boxes) watertight. P, which is composed of the water stop part provided in
The present invention relates to a primary water blocking material for a C box.
【０００２】[0002]
【従来の技術】従来から、共同溝、枡等はＰＣ函を連結
して構成されており、連結部を水密に保つために、その
連結部に一次止水材を設けている。従来のＰＣ函用一次
止水材の一例の構成を説明するため、ＰＣ函の連結状態
の一例を図７に断面図として示すとともに、連結端面の
一例を図８に平面図として示す。2. Description of the Related Art Conventionally, a common groove, a box or the like has been constructed by connecting PC boxes, and in order to keep the connecting portion watertight, a primary water blocking material is provided at the connecting portion. In order to describe the configuration of an example of a conventional primary water blocking material for a PC box, an example of a connected state of the PC box is shown in FIG. 7 as a cross-sectional view, and an example of the connection end face is shown in FIG. 8 as a plan view.
【０００３】図７および図８に示す例において、３１、
３２はＰＣ函、３３、３４はＰＣ函３１、３２の外周
面、３５、３６はＰＣ函３１、３２の内周面である。ま
た、３７はＰＣ函３２の連結端面、３８はこの連結端面
３７の内周面３６の周囲全体に設けた凹部、３９はこの
凹部３８に接着して取り付けた一次止水材、４０は凹部
３８のコーナー部である。一次止水材３９の取付は、Ｐ
Ｃ函３２の凹部３８に接着剤、主にクロロプレン系接着
剤を塗布し、一次止水材３９を接着施工していき、一次
止水材３９の接合部はシーラー類を上から覆って実施し
ている。また、一次止水材３９としては、水圧に応じて
スポンジ単体、スポンジとシーラーの複合体、シーラー
単体、弾性架橋体、水膨張型止水材等を使用する。In the example shown in FIGS. 7 and 8, 31,
32 is a PC box, 33 and 34 are outer peripheral surfaces of the PC boxes 31 and 32, and 35 and 36 are inner peripheral surfaces of the PC boxes 31 and 32. Further, 37 is a connecting end surface of the PC box 32, 38 is a concave portion provided around the entire inner peripheral surface 36 of the connecting end surface 37, 39 is a primary water blocking material adhered to the concave portion 38, and 40 is a concave portion 38. It is a corner part. Installation of the primary waterproof material 39 is P
An adhesive, mainly a chloroprene-based adhesive, is applied to the concave portion 38 of the C box 32, and the primary water-stopping material 39 is adhered. The joint of the primary water-stopping material 39 is performed by covering the sealers from above. ing. As the primary water blocking material 39, a sponge simple substance, a composite of sponge and a sealer, a sealer simple substance, an elastic crosslinked body, a water expansion type waterproofing material, etc. are used depending on the water pressure.
【０００４】[0004]
【発明が解決しようとする課題】ところが、上述した従
来のＰＣ函用止水材では、以下のような問題があった。 （１）一次止水材３９を凹部３８に接着剤を使用して取
り付けているため、ＰＣ函３１、３２が雨水等で濡れて
いる場合は、取り付けることができない。 （２）凹部３８のコーナー部４０へ一次止水材３９を取
り付けようとすると、直線の一次止水材３９は無理に曲
げられるため元の直線状態に戻ろうとする力が働き、一
次止水材３９が凹部３８からはずれやすくなる。However, the above-mentioned conventional waterproof material for PC box has the following problems. (1) Since the primary water blocking material 39 is attached to the recess 38 using an adhesive, it cannot be attached when the PC boxes 31, 32 are wet with rainwater or the like. (2) When attempting to attach the primary waterproof material 39 to the corner portion 40 of the recess 38, the linear primary waterproof material 39 is forcibly bent, so that a force to return to the original straight state acts, and the primary waterproof material 39 acts. It becomes easy for 39 to separate from the recess 38.
【０００５】（３）ＰＣ函３１、３２を連結する場合、
必ず微調整が必要となるが、一次止水材３９は凹部３８
へ接着剤で接着されているだけなので、一旦一次止水材
３９に連結すべきＰＣ函３１が触れると一次止水材３９
に無理な力が加わり凹部３８よりはずれ、微調整のため
再度連結すると一次止水材３９は正常な形状を保つこと
ができない。 （４）一次止水材３９の両末端のつなぎ目はシール材で
覆うだけで、しかも両末端において一次止水材３９は凹
部３８へ接着剤で接着されているだけなので、水圧に対
しつなぎ目は極端に弱く漏水しやすい。(3) When connecting the PC boxes 31 and 32,
Fine adjustment is always necessary, but the primary water stop material 39
Since it is only adhered with an adhesive to the primary water blocking material 39, once the PC box 31 to be connected to the primary water blocking material 39 touches, the primary water blocking material 39
An unreasonable force is applied to the concave portion 38, and the primary water blocking member 39 cannot maintain a normal shape when reconnected for fine adjustment. (4) The joints at both ends of the primary water-stopping material 39 are simply covered with the sealing material, and the primary water-stopping material 39 is only adhered to the recesses 38 at both ends by the adhesive, so the joints are extremely strong against water pressure. It is weak and easily leaks water.
【０００６】本発明の目的は上述した課題を解消して、
ＰＣ函連結部の確実な止水をすることができるＰＣ函用
一次止水材を提供しようとするものである。The object of the present invention is to solve the above problems,
An object of the present invention is to provide a primary water blocking material for a PC box, which can surely stop water at the PC box connecting portion.
【０００７】[0007]
【課題を解決するための手段】本発明のＰＣ函用一次止
水材は、複数のＰＣ函を水密に連結するため、ＰＣ函の
連結端面に設けた止水部から構成されるＰＣ函用一次止
水材において、前記止水部と一体に、引き抜け防止用の
凹部を有する埋め込み部を形成し、前記止水部を、止水
部本体と、この止水部本体の全周を覆うとともにその端
部が前記埋め込み部まで達するシール部とから構成し、
前記埋め込み部と前記シール部の端部とを、前記ＰＣ函
の連結端面に埋め込んだことを特徴とするものである。A primary water blocking material for a PC box according to the present invention is for a PC box which is composed of a water blocking portion provided on a connecting end surface of the PC box for water-tightly connecting a plurality of PC boxes. In the primary water blocking material, an embedded part having a recess for preventing pulling out is formed integrally with the water blocking part, and the water blocking part covers the water blocking part body and the entire circumference of the water blocking part body. And a seal portion whose end reaches the embedded portion,
The embedding part and the end part of the seal part are embedded in the connection end face of the PC box.
【０００８】[0008]
【作用】上述した構成において、止水部と一体に埋め込
み部を形成し、埋め込み部をＰＣ函の連結端面に埋め込
むこと、および止水部を止水部本体とそれを覆うシール
部とから構成し、シール部の端部を埋め込み部と同様に
ＰＣ函の連続端面に埋め込むことで、どのような力が加
えられようとも、また微調整のために再度連結しようと
も、止水部がＰＣ函の連結端面からはずれて脱落するこ
とはない。また、予め埋め込み部およびシール部の端部
をＰＣ函の連続端面に形成することで、接着剤で止水部
をＰＣ函の連結端面に取り付ける際の問題を解消するこ
とができる。さらに、止水部を、引き抜け防止用の凹部
を有する埋め込み部でＰＣ函の連結端面に取り付けるこ
とで、つなぎ目でもはがれにくく、シール材でつなぎ目
を覆うだけでも漏水することはない。その結果、止水性
の良好なＰＣ函用一次止水材を得ることができる。In the above structure, the embedded portion is formed integrally with the water blocking portion, the embedded portion is embedded in the connection end face of the PC box, and the water blocking portion is composed of the water blocking portion main body and the seal portion covering the water blocking portion main body. However, by embedding the end of the seal part in the continuous end face of the PC box in the same manner as the embedding part, no matter what force is applied or reconnection for fine adjustment, the water blocking part will be connected to the PC box. It does not fall off from the connecting end face of. Further, by previously forming the end portions of the embedded portion and the seal portion on the continuous end surface of the PC box, it is possible to solve the problem of attaching the water blocking portion to the connection end surface of the PC box with an adhesive. Furthermore, by attaching the water blocking portion to the connecting end surface of the PC box with the embedded portion having the recess for preventing pulling out, it is difficult to peel off the joint, and even if the joint is only covered with the sealing material, water does not leak. As a result, it is possible to obtain a primary water blocking material for a PC box having good water blocking performance.
【０００９】なお、上述した各部の材質は一次止水材と
して従来から使用されているものならば特に限定するも
のでないが、埋め込み部としては加硫ゴムまたはスポン
ジゴムを使用し、止水部のうち止水部本体としてはスポ
ンジゴムを使用し、止水部のうちシール部としてはブチ
ルゴムを使用すると、以下の実施例からもわかるように
好ましい態様となる。The material of each of the above-mentioned parts is not particularly limited as long as it has been conventionally used as a primary water blocking material, but vulcanized rubber or sponge rubber is used as an embedding part, and Of these, sponge rubber is used for the main body of the water blocking portion and butyl rubber is used for the sealing portion of the water blocking portion, as shown in the following examples.
【００１０】[0010]
【実施例】図１は本発明のＰＣ函用一次止水材の一例の
構成を示す図である。なお、図１に示す一次止水材も、
従来技術として説明した図７および図８に示すＰＣ函の
連結端面で使用されることはいうまでもない。図１に示
す例において、止水部１は、止水部本体２と、この止水
部本体２の全周を覆うシール部３とから構成されてい
る。また、埋め込み部４は、引き抜け防止用の凹部５を
有し、止水部１の止水部本体２と一体化されている。そ
して、埋め込み部４とシール部３の端部３ａとを、ＰＣ
函６を作製すると同時に連結端面７に埋め込んで固定す
ることで、本発明のＰＣ函用一次止水材を形成してい
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a diagram showing an example of the structure of a primary water blocking material for a PC box according to the present invention. In addition, the primary water-stopping material shown in FIG.
It is needless to say that it is used for the connecting end surface of the PC box shown in FIGS. 7 and 8 described as the prior art. In the example shown in FIG. 1, the water shut off portion 1 is composed of a water shut off portion main body 2 and a seal portion 3 that covers the entire circumference of the water shut off portion main body 2. Further, the embedded portion 4 has a recess 5 for preventing pulling out, and is integrated with the water blocking body 2 of the water blocking portion 1. Then, the embedded portion 4 and the end portion 3a of the seal portion 3 are connected to the PC
At the same time when the box 6 is manufactured, the box 6 is embedded and fixed in the connection end surface 7 to form the primary water blocking material for the PC box of the present invention.
【００１１】図１に示す例において、止水部本体２をス
ポンジゴムから構成した場合は、ＰＣ函６の不均一な仕
上がり面から密着性をより良くし、且つ、耐水性を向上
させるために、比重が０．２〜０．７のものを使用する
ことが好ましい。シール部３をブチルゴムから構成した
場合は、厚みが０．５〜３ｍｍのものを使用することが
好ましく、さらに好ましくは１〜２ｍｍのものを使用す
る。ただ、厚みよりは、止水部本体２の全周をあますこ
となく覆うことが重要であり、ＰＣ函６の作製の際その
端面３ａを連結端面７に埋め込んでいる。In the example shown in FIG. 1, when the water blocking portion main body 2 is made of sponge rubber, in order to improve the adhesion from the uneven finish surface of the PC box 6 and to improve the water resistance. It is preferable to use one having a specific gravity of 0.2 to 0.7. When the seal portion 3 is made of butyl rubber, it is preferable to use one having a thickness of 0.5 to 3 mm, and more preferably one having a thickness of 1 to 2 mm. However, rather than the thickness, it is more important to cover the entire circumference of the water blocking body 2 without touching it, and the end face 3a is embedded in the connecting end face 7 when the PC box 6 is manufactured.
【００１２】また、埋め込み部４を加硫ゴムで形成する
場合は、デューロＡ硬度で３５〜９０のものを使用する
ことが好ましく、７０〜８０がさらに好ましい。さら
に、埋め込み部４をスポンジゴムで形成する場合は、比
重０．４以上のものを使用することが好ましく、且つ、
止水部本体２を形成するスポンジゴムよりも大きい比重
のものを使用することが好ましい。When the embedded portion 4 is made of vulcanized rubber, it is preferable to use one having a Duro A hardness of 35 to 90, more preferably 70 to 80. Furthermore, when the embedded portion 4 is formed of sponge rubber, it is preferable to use one having a specific gravity of 0.4 or more, and
It is preferable to use a material having a specific gravity larger than that of the sponge rubber forming the water blocking body 2.
【００１３】以下、実際の例について説明する。まず、
以下に述べる構成の実施例１、比較例１および比較例２
の一次止水材を準備した。An actual example will be described below. First,
Example 1, Comparative Example 1 and Comparative Example 2 having the configurations described below
The primary waterproof material was prepared.
【００１４】（実施例１）図１に示す構造の一次止水材
で、止水部１を、比重０．４５のスポンジゴムからなる
止水部本体２と厚み１ｍｍのブチル系接着剤からなるシ
ール部３から構成するとともに、埋め込み部４をデュー
ロＡ硬度７０の加硫ゴムから構成する。 （比較例１）図２に示す構造の一次止水材で、実施例１
と同様、止水部１を止水部本体２とシール部３とから構
成し、この止水部１と埋め込み部４を一体化し、埋め込
み部４をＰＣ函６の連結端面７に埋め込んでいる。た
だ、止水部１のシール部３が埋め込み部４まで達してお
らず、ＰＣ函６の連結端面７に埋まっていない。 （比較例２）図３に示す構造の一次止水材で、止水部１
だけで構成されており、止水部１は止水部本体２の全周
をシール部３で覆って構成している。そして、止水部１
のシール部３とＰＣ函６の連結端面７とを接着剤で固定
している。(Embodiment 1) A primary water blocking material having a structure shown in FIG. 1, wherein a water blocking portion 1 is composed of a water blocking portion body 2 made of sponge rubber having a specific gravity of 0.45 and a butyl adhesive having a thickness of 1 mm. The seal portion 3 and the embedding portion 4 are made of vulcanized rubber having a Duro A hardness of 70. (Comparative Example 1) A primary water blocking material having a structure shown in FIG.
Similarly to the above, the water blocking part 1 is composed of the water blocking part body 2 and the seal part 3, the water blocking part 1 and the embedding part 4 are integrated, and the embedding part 4 is embedded in the connection end face 7 of the PC box 6. . However, the seal part 3 of the water stop part 1 does not reach the embedded part 4 and is not buried in the connection end face 7 of the PC box 6. (Comparative Example 2) A primary water blocking material having the structure shown in FIG.
The water blocking part 1 is constructed by covering the entire circumference of the water blocking part body 2 with the seal part 3. And the water stop part 1
The seal portion 3 and the connecting end surface 7 of the PC box 6 are fixed with an adhesive.
【００１５】準備した実施例１、比較例１および比較例
２のそれぞれの一次止水材に対し、以下のように、取り
付け性、施工安定性および止水性を調べた。取り付け性
の結果を表１に、施工安定性の結果を表２に、止水性の
結果を表３にそれぞれ示す。With respect to the prepared primary water-stopping materials of Example 1, Comparative Example 1 and Comparative Example 2, the attachability, construction stability and water-stopping property were examined as follows. The results of the attachability are shown in Table 1, the results of the construction stability are shown in Table 2, and the results of the water stopping property are shown in Table 3.
【００１６】（１）取り付け性 図４に示すように、３００×３００×５０ｍｍのコンク
リート平板１１に、上述した実施例１、比較例１および
比較例２の構造の一次止水材１２を半径１５０ｍｍでそ
れぞれ取り付け、耐ローリング性および保持性を目視で
評価した。ここで、耐ローリング性は、図４のＡ−Ａ’
断面における一次止水材１２の形状変形の度合いを優５
から劣１の５段階で表した。また、保持性は、図４のＢ
方向を上として１週間保持後の一次止水材１２の剥落の
有無を調べた。(1) Attachability As shown in FIG. 4, the primary water-stopping material 12 of the structures of Example 1, Comparative Example 1 and Comparative Example 2 described above is applied to a concrete flat plate 11 of 300 × 300 × 50 mm with a radius of 150 mm. And the rolling resistance and the holding property were visually evaluated. Here, the rolling resistance is AA ′ in FIG.
The degree of shape deformation of the primary waterproofing material 12 in the cross section is set to 5
It was expressed in 5 stages from 1 to 1. In addition, the holding property is B in FIG.
With the direction facing upward, the presence or absence of peeling of the primary water blocking material 12 after holding for one week was examined.
【００１７】[0017]
【表１】 [Table 1]
【００１８】（２）施工安定性 図５に示すように、図４に示したコンクリート平板１１
上に一次止水材１２を形成した取り付け性試験体へ、別
のコンクリート平板１３を押しつけ、再度コンクリート
平板１３を離した後の一次止水材１２の形状変化の度合
いを優５から劣１の５段階で表した。ここで、コンクリ
ート平板１３の押しつけは、一次止水材１２が３ｍｍ程
度変形するまで押しつけ１分間保持後、引き離した。(2) Construction stability As shown in FIG. 5, the concrete flat plate 11 shown in FIG.
The degree of change in shape of the primary water-stopping material 12 after pressing the concrete flat plate 13 against the mountability test body on which the primary water-stopping material 12 is formed and releasing the concrete flat plate 13 again is from 5 to 1. It is expressed in 5 steps. Here, the concrete flat plate 13 was pressed until the primary water blocking material 12 was deformed by about 3 mm, held for 1 minute, and then separated.
【００１９】[0019]
【表２】 [Table 2]
【００２０】（３）止水性 図６（ａ）に示すように、コンクリート平板２１に、上
述した実施例１、比較例１および比較例２の構造の一次
止水材２２を３００ｍｍ直径の円形状に取り付けた。次
に、図６（ｂ）に示すように、一次止水材２２の厚みの
１／２の厚みのライナープレート２３を配し、コンクリ
ート平板２４を重ねて締結ボルト２５で固定した。コン
クリート平板２４には、バルブ２６を有する入水管２７
と圧力管２８とを設け、入水管２７より水を注入し、水
圧０．５ｋｇｆ／ｃｍ2 、１．０ｋｇｆ／ｃｍ2 、１．
５ｋｇｆ／ｃｍ2 で、それぞれ１時間加圧保持し、漏水
の有無を調べた。(3) Water Stoppage As shown in FIG. 6 (a), a primary water stop material 22 having the structure of Example 1, Comparative Example 1 and Comparative Example 2 described above is formed on a concrete flat plate 21 in a circular shape having a diameter of 300 mm. Attached to. Next, as shown in FIG. 6 (b), a liner plate 23 having a thickness half that of the primary water blocking material 22 was arranged, and concrete flat plates 24 were stacked and fixed with fastening bolts 25. The concrete flat plate 24 has a water inlet pipe 27 having a valve 26.
And a pressure pipe 28 are provided, water is injected from the water inlet pipe 27, and the water pressure is 0.5 kgf / cm 2 , 1.0 kgf / cm 2 , 1.
The pressure was maintained at 5 kgf / cm 2 for 1 hour, and the presence or absence of water leakage was examined.
【００２１】[0021]
【表３】 [Table 3]
【００２２】以上の結果から、本発明の実施例１の一次
止水材は、比較例１および比較例２の一次止水材と比較
して、止水部を埋め込み型にすることで水圧による変形
を抑止でき、高い水圧に対しても止水効果が高く、コー
ナー追従性すなわち耐ローリング性の良く、取り付け
性、施工安定性、止水性のすべての点で良好な性能を示
し、ＰＣ函用止水材として最適であることがわかる。From the above results, the primary water-stopping material of Example 1 of the present invention is different from the primary water-stopping materials of Comparative Example 1 and Comparative Example 2 in that the water-stop portion is of the embedded type, so that the pressure Deformation can be suppressed, water-stopping effect is high against high water pressure, corner followability, that is, rolling resistance is good, and good performance in terms of installation property, construction stability, and water-stopping property is exhibited. It can be seen that it is the most suitable as a waterproof material.
【００２３】[0023]
【発明の効果】以上の説明から明らかなように、本発明
によれば、止水部と一体に埋め込み部を形成し、埋め込
み部をＰＣ函の連結端面に埋め込むため、および止水部
を止水部本体とそれを覆うシール部とから構成し、シー
ル部の端部を埋め込み部と同様にＰＣ函の連続端面に埋
め込むため、どのような力が加えられようとも、また微
調整のために再度連結しようとも、止水部がＰＣ函の連
結端面からはずれて脱落することはなく、止水性の高い
ＰＣ函用一次止水材を得ることができる。As is apparent from the above description, according to the present invention, the embedded portion is formed integrally with the water blocking portion, and the embedded portion is embedded in the connecting end surface of the PC box, and the water blocking portion is stopped. It is composed of a water body and a seal part that covers it, and the end of the seal part is embedded in the continuous end face of the PC box like the embedding part, so no matter what force is applied or for fine adjustment. Even if they are connected again, the water-stop portion does not fall off from the connecting end face of the PC box, and the primary water-stop material for a PC box having a high water-stop property can be obtained.
【図１】本発明のＰＣ函用一次止水材の一例の構成を示
す図である。FIG. 1 is a diagram showing a configuration of an example of a primary water blocking material for a PC box of the present invention.
【図２】比較例１の一次止水材の構成を示す図である。FIG. 2 is a diagram showing a configuration of a primary water blocking material of Comparative Example 1.
【図３】比較例２の一次止水材の構成を示す図である。FIG. 3 is a diagram showing a configuration of a primary water blocking material of Comparative Example 2.
【図４】取り付け性の評価を行う試験体の状態を示す図
である。FIG. 4 is a diagram showing a state of a test body for evaluating attachment property.
【図５】施工安定性の評価を行う試験体の状態を示す図
である。FIG. 5 is a diagram showing a state of a test body for evaluating construction stability.
【図６】（ａ）は止水性の評価を行う試験体の状態を示
す図であり、（ｂ）はそのＣ−Ｃ断面を示す図である。FIG. 6 (a) is a diagram showing a state of a test body for evaluating water blocking property, and FIG. 6 (b) is a diagram showing a cross section taken along the line CC.
【図７】従来のＰＣ函の連結状態の一例を示す図であ
る。FIG. 7 is a diagram showing an example of a connected state of a conventional PC box.
【図８】従来のＰＣ函の連結断面の一例を示す図であ
る。FIG. 8 is a diagram showing an example of a connecting cross section of a conventional PC box.
１ 止水部 ２ 止水部本体 ３ シール部 ３ａ 端部 ４ 埋め込み部 ５ 凹部 ６ ＰＣ函 ７ 連結端面 1 Water-stopping part 2 Water-stopping part main body 3 Seal part 3a End part 4 Embedded part 5 Recessed part 6 PC box 7 Connection end face
───────────────────────────────────────────────────── フロントページの続き (72)発明者 早坂 武昌 山形県酒田市上本町６番７号 前田製管株 式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takemasa Hakasaka 6-7 Uehonmachi, Sakata City, Yamagata Prefecture Maeda Pipeline Co., Ltd.
Claims (4)
下、ＰＣ函という）を水密に連結するため、ＰＣ函の連
結端面に設けた止水部から構成されるＰＣ函用一次止水
材において、前記止水部と一体に、引き抜け防止用の凹
部を有する埋め込み部を形成し、前記止水部を、止水部
本体と、この止水部本体の全周を覆うとともにその端部
が前記埋め込み部まで達するシール部とから構成し、前
記埋め込み部と前記シール部の端部とを、前記ＰＣ函の
連結端面に埋め込んだことを特徴とするＰＣ函用一次止
水材。1. A primary water blocking material for a PC box, comprising a water blocking portion provided on a connecting end surface of the PC box for water-tightly connecting a plurality of precast concrete boxes (hereinafter referred to as PC boxes). An embedded portion having a recess for preventing pulling out is formed integrally with the water portion, and the water blocking portion covers the water blocking portion main body and the entire circumference of the water blocking portion main body, and the end portion thereof is the embedded portion. A primary waterproofing material for a PC box, comprising a seal portion reaching up to the end, and the embedding portion and an end portion of the seal portion being embedded in a connection end surface of the PC box.
ジゴムから構成した請求項１記載のＰＣ函用一次止水
材。2. The primary water blocking material for a PC box according to claim 1, wherein the embedded portion is made of vulcanized rubber or sponge rubber.
した請求項１記載のＰＣ函用一次止水材。3. The primary water blocking material for a PC box according to claim 1, wherein the water blocking body is made of sponge rubber.
る材料から構成した請求項１記載のＰＣ函用一次止水
材。4. The primary water blocking material for a PC box according to claim 1, wherein the seal portion is made of a material mainly containing butyl rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22959594A JP3540386B2 (en) | 1994-09-26 | 1994-09-26 | Primary waterproof material for precast concrete box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22959594A JP3540386B2 (en) | 1994-09-26 | 1994-09-26 | Primary waterproof material for precast concrete box |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0893042A true JPH0893042A (en) | 1996-04-09 |
| JP3540386B2 JP3540386B2 (en) | 2004-07-07 |
Family
ID=16894649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22959594A Expired - Lifetime JP3540386B2 (en) | 1994-09-26 | 1994-09-26 | Primary waterproof material for precast concrete box |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3540386B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005054883A (en) * | 2003-08-04 | 2005-03-03 | Nippon Zenith Pipe Co Ltd | Rubber ring joint |
| JP2005220280A (en) * | 2004-02-09 | 2005-08-18 | Three Bond Co Ltd | Water-swelling sealing material, precast concrete integrated therewith and method for producing the same |
| JP2006097736A (en) * | 2004-09-28 | 2006-04-13 | Mitsubishi Cable Ind Ltd | sticker |
| JP2008013995A (en) * | 2006-07-05 | 2008-01-24 | Hayakawa Rubber Co Ltd | Water cut-off material |
| JP2009114643A (en) * | 2007-11-02 | 2009-05-28 | Makoto Uemura | Connecting structure of underground structure |
| CN110159318A (en) * | 2019-05-30 | 2019-08-23 | 东北大学 | A kind of shield tunnel composite water-proof structure |
-
1994
- 1994-09-26 JP JP22959594A patent/JP3540386B2/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005054883A (en) * | 2003-08-04 | 2005-03-03 | Nippon Zenith Pipe Co Ltd | Rubber ring joint |
| JP2005220280A (en) * | 2004-02-09 | 2005-08-18 | Three Bond Co Ltd | Water-swelling sealing material, precast concrete integrated therewith and method for producing the same |
| JP2006097736A (en) * | 2004-09-28 | 2006-04-13 | Mitsubishi Cable Ind Ltd | sticker |
| JP2008013995A (en) * | 2006-07-05 | 2008-01-24 | Hayakawa Rubber Co Ltd | Water cut-off material |
| JP2009114643A (en) * | 2007-11-02 | 2009-05-28 | Makoto Uemura | Connecting structure of underground structure |
| CN110159318A (en) * | 2019-05-30 | 2019-08-23 | 东北大学 | A kind of shield tunnel composite water-proof structure |
| CN110159318B (en) * | 2019-05-30 | 2020-10-23 | 东北大学 | A shield tunnel composite waterproof structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3540386B2 (en) | 2004-07-07 |
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