JPH02200973A - Water stop work process for concrete structure - Google Patents
Water stop work process for concrete structureInfo
- Publication number
- JPH02200973A JPH02200973A JP1995589A JP1995589A JPH02200973A JP H02200973 A JPH02200973 A JP H02200973A JP 1995589 A JP1995589 A JP 1995589A JP 1995589 A JP1995589 A JP 1995589A JP H02200973 A JPH02200973 A JP H02200973A
- Authority
- JP
- Japan
- Prior art keywords
- water
- pump
- concrete structure
- water stop
- agent
- 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.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 83
- 238000000034 method Methods 0.000 title claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 35
- 238000002347 injection Methods 0.000 claims abstract description 16
- 239000007924 injection Substances 0.000 claims abstract description 16
- 229920005749 polyurethane resin Polymers 0.000 claims abstract description 7
- 239000011550 stock solution Substances 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims description 4
- 238000004078 waterproofing Methods 0.000 claims description 4
- 229920002803 thermoplastic polyurethane Polymers 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 5
- 239000000243 solution Substances 0.000 abstract description 2
- 238000002386 leaching Methods 0.000 abstract 2
- 230000008595 infiltration Effects 0.000 abstract 1
- 238000001764 infiltration Methods 0.000 abstract 1
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- 239000004721 Polyphenylene oxide Substances 0.000 description 2
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 description 2
- 239000012948 isocyanate Substances 0.000 description 2
- 150000002513 isocyanates Chemical class 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920000570 polyether Polymers 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 1
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical compound ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 150000002009 diols Chemical class 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- 239000002075 main ingredient Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Building Environments (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は建築又は土木等におけるコンクリ−ト構造物
の止水を目的としたコンクリート構造物の止水施工方法
に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for waterproofing a concrete structure for the purpose of waterproofing a concrete structure in architecture, civil engineering, or the like.
（従来の技術）
従来、コンクリート建造物、例えばコンクリート壁又は
コンクリート床などの止水については、幾多の工法が提
案されているが、その多くはコンクリート建造物の一側
から他側に向って生じた亀裂に止水剤を加圧充填し、該
止水剤その固化により止水しようとするも゛のであった
。(Prior Art) A number of methods have been proposed to stop water in concrete buildings, such as concrete walls or concrete floors, but most of these methods stop water from flowing from one side of the concrete building to the other. An attempt was made to fill the cracks with a water-stopping agent under pressure and solidify the water-stopping agent to stop water.
（発明により解決すべき課題）
然し乍ら、前記止水剤の多くは二液性合成樹脂であって
、注入時に二液を混合するのであるが、均一混合不十分
とか、浸透性不十分とか、或いは止水剤とコンクリート
との接着性不十分などによって、十分の止水効果が得ら
れなかったり、止水剤充填の近辺からの漏水再発などの
問題点があり、止水剤が水との親和性に欠けるものにあ
っては、水の存在する場所のみ止水不完全になったり、
雨中施工が困難になるなどの問題点もあった。(Problems to be Solved by the Invention) However, most of the above-mentioned water-stopping agents are two-component synthetic resins, and the two components are mixed at the time of injection. There are problems such as insufficient water-stopping effect due to insufficient adhesion between the water-stopping agent and concrete, or recurrence of water leakage from the vicinity of the water-stopping agent. In the case of things that lack water, water may not be completely stopped only in places where water exists, or
There were also problems, such as the difficulty of construction in the rain.
（課題゛を解決すべき手段）
然るにこの発明は、止水剤として親水性のあるポリウレ
タン樹脂原液を主剤とするので、注入性および浸透性が
きわめてよく、雨中作業も支障がないなど、前記従来の
問題点を解決したのである。(Means to Solve the Problem) However, since this invention uses a hydrophilic polyurethane resin stock solution as a main ingredient as a water stop agent, it has extremely good injectability and permeability, and can be used in the rain without any problems. This solved the problem.
即ちこの発明は、コンクリート構造物の水の浸入側に所
定間隔で注液穴を設け、該注液穴から加圧水を注入し、
この加圧水がコンクリート構造物の水の浸出側に達した
ならば、前記注液穴から親水性ウレタン樹脂原液を主成
分とする止水剤を加圧注入し、前記止水剤が、前記コン
クリート構造物の水の浸出側に達したならば、該止水剤
の注入を中止することを特徴としたコンクリート構造物
の止水施工方法である。前記における止水剤は、親水性
ポリウレタン樹脂原液、又はこの原液に水を混合して用
いることができる。That is, this invention provides liquid injection holes at predetermined intervals on the water ingress side of a concrete structure, injects pressurized water through the liquid injection holes,
When this pressurized water reaches the water seepage side of the concrete structure, a water stop agent whose main component is a hydrophilic urethane resin stock solution is injected under pressure from the injection hole, and the water stop agent is applied to the concrete structure. This is a water stop construction method for a concrete structure, characterized in that injection of the water stop agent is stopped when the water reaches the seepage side of the object. The water stop agent mentioned above can be used as a hydrophilic polyurethane resin stock solution or by mixing water with this stock solution.
前記親水性ポリウレタン樹脂としては、有機イソシアネ
ートポリエーテルジオール系プレポリマ、有機イソシア
ネートポリエーテルトリオール系プレポリマー、トリレ
ンジイソシアネート、ジフェニルメタンジイソシアネー
ト、メチルエチルケトン又はジブチルフタレートの二種
又は数種の混合物よりなるものである。例えば市販のノ
１イセルＯＨ（東邦化学工業株式会社製）を使用するこ
とができる。The hydrophilic polyurethane resin is composed of two or a mixture of an organic isocyanate polyether diol prepolymer, an organic isocyanate polyether triol prepolymer, tolylene diisocyanate, diphenylmethane diisocyanate, methyl ethyl ketone, or dibutyl phthalate. For example, commercially available Noicel OH (manufactured by Toho Chemical Industry Co., Ltd.) can be used.
前記親水性ポリウレタン樹脂は、毒性がきわめて小さく
、親水性に優れ、水に接触すると反応して数分間で固結
し、水に不溶性になる。またコンクリート、砂利、砂な
どとの接着性が大きく、例えば砂利の中へ原液と水との
混合物を注入すると、急速に固結し、止水性のある砂利
の団結塊となることが認められた。The hydrophilic polyurethane resin has extremely low toxicity and excellent hydrophilicity, and when it comes into contact with water, it reacts and solidifies in several minutes, becoming insoluble in water. It also has strong adhesion to concrete, gravel, sand, etc., and for example, when a mixture of undiluted solution and water is injected into gravel, it has been found to rapidly solidify and form a cohesive mass of water-stopping gravel. .
（作 用）
この発明は、止水すべきコンクリート構造物の亀裂に、
先づ加圧水を注入し、ついで止水剤を加圧注入するので
、止水剤を水の先導によって微細亀裂の奥まで浸透させ
ることができる。(Function) This invention solves cracks in concrete structures that need to stop water.
Since pressurized water is first injected and then the water stop agent is injected under pressure, the water stop agent can penetrate deep into minute cracks by leading the water.
また、止水すべきコンクリート構造物面の亀裂が雨にさ
らされている場合であっても、注入止水剤とコンクリー
ト面との付着力が低下するおそれはない。Furthermore, even if a crack in the surface of a concrete structure that is to be water-stopped is exposed to rain, there is no risk that the adhesion between the injected water-stopping agent and the concrete surface will decrease.
更に、止水剤が固結した後は不透水性となると共に、コ
ンクリートの連結剤となり、更にコンクリートの熱膨張
、又は熱収縮時には伸縮して緩衝効果を期待することも
できる。Furthermore, after the water sealing agent hardens, it becomes water-impermeable and acts as a connecting agent for concrete, and can also be expected to expand and contract during thermal expansion or contraction of concrete, providing a buffering effect.
（実施例）
コンクリート建造物の屋根床１の止水施工に際しては、
先づ防水層２上より所定間隔（例えば１ｍ間隔）でほぼ
直角に止水剤の注液穴３．３を設ける。前記注液穴３の
深さは防水層の厚さによって異なるが、通常防水層の厚
さより若干深くする。(Example) When waterproofing the roof floor 1 of a concrete building,
First, water stopper injection holes 3.3 are provided at predetermined intervals (for example, 1 m intervals) substantially perpendicularly above the waterproof layer 2. The depth of the liquid injection hole 3 varies depending on the thickness of the waterproof layer, but is usually slightly deeper than the thickness of the waterproof layer.
ついでこの注液穴３内へバイブ４を挿入し、このバイブ
４の外端に耐圧ホース５を連結する。耐圧ホース５は分
岐バルブ６を介して水ポンプ７の吐出口と連結する耐圧
ホース８と、止水剤ポンプ９の吐出口と連結する耐圧ホ
ース１０とに分岐されている。前記において注液穴３の
穿設、バイブ４の挿入および耐圧ホース５．８．１０の
連結を完了したならば、先づ分岐バルブ６を操作して水
ポンプ７の吐出口とバイブ４を連通させ、水ポンプ７を
始動する。そこで水は矢示１１のように耐圧ホース８．
５を介してバイブ４内へ圧入される。Next, a vibrator 4 is inserted into the liquid injection hole 3, and a pressure-resistant hose 5 is connected to the outer end of the vibrator 4. The pressure hose 5 is branched into a pressure hose 8 connected to the discharge port of the water pump 7 via a branch valve 6, and a pressure hose 10 connected to the discharge port of the water stop agent pump 9. After completing the drilling of the liquid injection hole 3, the insertion of the vibrator 4, and the connection of the pressure hose 5.8.10, first operate the branch valve 6 to connect the discharge port of the water pump 7 and the vibrator 4. and start the water pump 7. There, water is poured into a pressure-resistant hose 8 as shown by arrow 11.
5 into the vibrator 4.
前記における加圧水は、１ｋｇ／ｃｊ〜３ ｋｇ ／
ｃシの圧力で送水される。このようにして、水が屋根床
１の内面（天井）に浸出したならば、前記水ポンプ７を
停止し、分岐バルブ６を止水剤通過側に切り替えて、止
水剤ポンプ９を始動する。このようにすれば止水剤は矢
示１２のようにバイブ４に達し、更に水の通過した亀裂
１４に沿って、微細な亀裂にも入り込むことになる。こ
の場合の止水剤の圧力は１ｋｇ／ｃ−〜２ ｋｇ ／
ｃｄとする。このようにして止水剤が屋根床１の内面に
達したならば、止水剤ポンプ９を停止する。The pressurized water in the above is 1 kg/cj to 3 kg/cj
Water is delivered at a pressure of c. In this way, once water has seeped into the inner surface (ceiling) of the roof floor 1, the water pump 7 is stopped, the branch valve 6 is switched to the water stop agent passage side, and the water stop agent pump 9 is started. . In this way, the water sealing agent reaches the vibrator 4 as shown by the arrow 12, and further penetrates into minute cracks along the cracks 14 through which water has passed. In this case, the pressure of the water stop agent is 1kg/c-~2kg/
CD. When the water stop agent reaches the inner surface of the roof floor 1 in this manner, the water stop agent pump 9 is stopped.
この場合に、各亀裂１４には止水剤が浸透しているので
、付着している水と反応して数分間で固化し、不透水性
の弾性固結体１３を形成すると共に、この弾性固結体は
コンクリートともよく接着し、亀裂を埋めるのみならず
、コンクリート亀裂の接着剤の作用を奏する。In this case, since each crack 14 is penetrated with a water stopper, it reacts with the adhering water and solidifies in a few minutes, forming a water-impermeable elastic solid 13, and this elastic The solids adhere well to concrete, not only filling cracks but also acting as an adhesive for concrete cracks.
そこで、バイブ４内にも止水剤が充填されるので、屋根
床１の外面止水は完了したことになる。Therefore, the water stop agent is also filled in the vibrator 4, so that the water stop on the outer surface of the roof floor 1 is completed.
ついで屋根床の内面（天井面）にセラミックシート１５
を添着して内面仕上げをする。Next, a ceramic sheet 15 is placed on the inner surface of the roof floor (ceiling surface).
Attach and finish the inner surface.
（発明の効果）
即ちこの発明によれば、止水すべき亀裂へ先づ加圧水を
注入し、ついで親水性の止水剤を注入するので、止水剤
は水の浸透した所には全部浸透し、大小の亀裂に悉く充
填された状態となり固結するので、完全止水が可能とな
る効果がある。また、出水剤が親水性である為に、コン
クリートが濡れていても止水効果に支障がなく、雨天で
も止水施工に支障を生じるおそれはないなどの効果もあ
る。(Effect of the invention) That is, according to this invention, pressurized water is first injected into the crack where water should be stopped, and then a hydrophilic water stop agent is injected, so that the water stop agent penetrates all the places where water has penetrated. However, since it fills all cracks large and small and solidifies, it has the effect of making it possible to completely stop water. In addition, since the water release agent is hydrophilic, there is no problem with the water stopping effect even if the concrete is wet, and there is no risk of hindering water stopping construction even in rainy weather.
図はこの発明の実施例の状態を示す断面口である。
１・・・屋根床 ２・・・防水層
３・・・注入穴 ５．８．１０・・・耐圧ホース７
・・・水ポンプ ９・・・止水剤ポンプ特許出願人
日本治水株式会社The figure is a cross-sectional view showing the state of the embodiment of the invention. 1... Roof floor 2... Waterproof layer 3... Injection hole 5.8.10... Pressure resistant hose 7
...Water pump 9...Water stop agent pump patent applicant
Japan Flood Control Co., Ltd.
Claims (1)
穴を設け、該注液穴から加圧水を注入し、この加圧水が
コンクリート構造物の水の浸出側に達したならば、前記
注液穴から親水性ウレタン樹脂原液を主成分とする止水
剤を加圧注入し、前記止水剤が、前記コンクリート構造
物の水の浸出側に浸出したならば止水剤の注入を中止す
ることを特徴としたコンクリート構造物の止水施工方法 ２ 止水剤は、親水性ポリウレタン樹脂原液又は親水性
ポリウレタン樹脂原液に水を混合したものとする請求項
１記載のコンクリート構造物の止水施工方法[Scope of Claims] 1. Liquid injection holes are provided at predetermined intervals on the water ingress side of a concrete structure, pressurized water is injected from the injection holes, and when this pressurized water reaches the water ingress side of the concrete structure, For example, a water-stopping agent whose main component is a hydrophilic urethane resin stock solution is injected under pressure through the injection hole, and if the water-stopping agent leaches into the water seepage side of the concrete structure, the water-stopping agent is removed. 2. Method 2 for waterproofing a concrete structure, characterized by stopping injection. 2. The concrete structure according to claim 1, wherein the water-stopping agent is a hydrophilic polyurethane resin stock solution or a hydrophilic polyurethane resin stock solution mixed with water. Water stop construction method
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1995589A JPH02200973A (en) | 1989-01-30 | 1989-01-30 | Water stop work process for concrete structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1995589A JPH02200973A (en) | 1989-01-30 | 1989-01-30 | Water stop work process for concrete structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02200973A true JPH02200973A (en) | 1990-08-09 |
Family
ID=12013621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1995589A Pending JPH02200973A (en) | 1989-01-30 | 1989-01-30 | Water stop work process for concrete structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02200973A (en) |
-
1989
- 1989-01-30 JP JP1995589A patent/JPH02200973A/en active Pending
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