JPH10176422A - Cut-off method - Google Patents
Cut-off methodInfo
- Publication number
- JPH10176422A JPH10176422A JP8338782A JP33878296A JPH10176422A JP H10176422 A JPH10176422 A JP H10176422A JP 8338782 A JP8338782 A JP 8338782A JP 33878296 A JP33878296 A JP 33878296A JP H10176422 A JPH10176422 A JP H10176422A
- Authority
- JP
- Japan
- Prior art keywords
- water
- porous body
- porous material
- agent
- cut
- 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
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- Working Measures On Existing Buildindgs (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、漏水箇所を止水す
る工法に関し、特に漏水箇所からの漏水を、漏水箇所の
動きが小さいときのみならず、漏水箇所のみずみちが大
きく拡大または狭まった場合でも確実に止めることがで
きる止水工法を提供することを目的とする。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for stopping water at a water leaking point, and more particularly to a method of stopping water leaking from a water leaking point not only when the movement of the water leaking point is small, but also at the water leaking point. It is an object of the present invention to provide a waterproofing method that can be reliably stopped even in a case.
【０００２】[0002]
【従来の技術】従来、コンクリートなどからなる躯体に
形成されたクラック（亀裂）や、目地からの漏水を防ぐ
ためのものとして、注入式の硬化型液状止水剤が用いら
れている。この止水剤は例えばウレタン樹脂等からなる
ものであり、この止水剤を用いてクラック等の止水を行
う工法としては、例えば、図３に示すように、躯体１の
漏水箇所であるクラック２の開口部に断面Ｖ字状の溝６
を形成し、この溝６内に未硬化状態の止水剤７を注入
し、これを硬化させ、溝６の内壁に接着した状態として
クラック２を塞ぐ方法が知られている。2. Description of the Related Art Conventionally, an injection-type curable liquid waterproofing agent has been used to prevent cracks (cracks) formed in a skeleton made of concrete or the like and water leakage from joints. The water-stopping agent is made of, for example, urethane resin. As a method of stopping water such as cracks using the water-stopping agent, for example, as shown in FIG. V-shaped groove 6 in opening 2
A method is known in which an uncured water-stopping agent 7 is injected into the groove 6, cured, and adhered to the inner wall of the groove 6 to close the crack 2.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上記従
来の止水工法では、次のような問題があった。気温変化
などによって躯体１の温度が変動した場合には、その温
度に応じて躯体１が伸縮し、クラック２の間隔が拡大ま
たは狭まることがある。このように、クラック２の間隔
が変動すると、硬化した止水剤７に圧縮力または引張り
力が加わって上記止水剤７が破断し、この破断部分から
再び漏水が発生することがあった。本発明は、上記事情
に鑑みてなされたもので、漏水箇所からの漏水を、漏水
箇所の動きが小さいときのみならず、漏水箇所が大きく
拡大または狭まった場合でも確実に止めることができる
止水工法を提供することを目的とする。However, the above-mentioned conventional waterproofing method has the following problems. When the temperature of the skeleton 1 fluctuates due to a change in temperature or the like, the skeleton 1 expands and contracts in accordance with the temperature, and the interval between the cracks 2 may increase or decrease. As described above, when the interval between the cracks 2 fluctuates, a compressive force or a tensile force is applied to the hardened water-stopping agent 7, so that the water-stopping agent 7 breaks, and water leakage may occur again from the broken portion. The present invention has been made in view of the above circumstances, and it is possible to reliably stop water leakage from a water leakage point not only when the movement of the water leakage point is small, but also when the water leakage point is greatly expanded or narrowed. The purpose is to provide a construction method.
【０００４】[0004]
【課題を解決するための手段】本発明の止水工法は、外
表面に連通する多孔質体を、漏水箇所のみずみちの内部
に挿入し、この多孔質体に、親水性重合硬化型液状止水
剤を注入し、含浸させることを特徴とする。また、外表
面に連通する多孔質体に予め親水性重合硬化型液状止水
剤を含浸しておき、この多孔質体を、漏水箇所のみずみ
ちの内部に挿入してもよい。According to the water stopping method of the present invention, a porous body communicating with the outer surface is inserted into the inside of the water only at the leaked portion, and the hydrophilic polymerized liquid is added to the porous body. It is characterized by injecting and impregnating a waterproofing agent. Alternatively, the porous body communicating with the outer surface may be impregnated in advance with a hydrophilic polymerization-curable liquid water-blocking agent, and the porous body may be inserted only into the water leaking part.
【０００５】[0005]
【発明の実施の形態】以下、図１を参照して本発明の止
水工法の一例を説明する。図中符号１は、コンクリート
などからなる躯体であり、符号２は、躯体１の漏水箇所
となるクラックである。この例の方法では、まず、クラ
ック２内に多孔質体３を挿入する。多孔質体３は、止水
部分の機械強度を高め、且つ、その中に親水性液状止水
剤を保持しそこで硬化させるためのものであり、機械強
度（圧縮強度および引張強度）に優れ、伸縮性および圧
縮弾性を有し、耐久性に優れ、しかも親水性液状止水剤
が容易に浸透するものが好ましく、連続気泡構造の発泡
体、比較的硬質の繊維が絡み合ってできた繊維塊等が好
適に用いられる。この多孔質体としては、圧縮強度（Ｊ
ＩＳ Ｋ６４０１準拠）が５ｋｇ／ｃｍ 2以上、引張強
度（ＪＩＳ Ｋ６３０１準拠）が２ｋｇ／ｃｍ2以上、
伸度（ＪＩＳ Ｋ６３０１準拠）が５０％以上のものを
用いることが好ましい。これらの値が上記範囲内にある
と、躯体１の伸縮によってクラック２の間隔が変動した
ときでも、多孔質体がこの変動に追随できるため再漏水
が生じ難いので好ましい。この多孔質体の具体例として
は、ウレタン発泡体、スチールウール等を例示できる。
中でも特に、セル膜のないウレタン発泡体を用いるのが
好ましい。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG.
An example of the hydraulic method will be described. The symbol 1 in the figure is concrete
The reference numeral 2 indicates a water leakage point of the skeleton 1.
It is a crack that becomes In the method of this example, first
The porous body 3 is inserted into the hook 2. The porous body 3 is waterproof
Enhances the mechanical strength of the part and contains a hydrophilic liquid waterproof
For holding and curing the agent
Excellent degree (compression strength and tensile strength), elasticity and pressure
It has shrink elasticity, excellent durability, and hydrophilic liquid waterproofing agent
That easily penetrates is preferable, and foaming with an open-cell structure
Body, fiber lump formed by entanglement of relatively hard fibers, etc.
Appropriately used. This porous body has a compressive strength (J
5 kg / cm according to IS K6401) TwoAbove, tensile strength
Degree (according to JIS K6301) is 2kg / cmTwothat's all,
If the elongation (based on JIS K6301) is 50% or more
Preferably, it is used. These values are within the above range
And the distance between the cracks 2 fluctuated due to the expansion and contraction of the frame 1.
Even when the porous body can follow this fluctuation,
Is difficult to occur. As a specific example of this porous body
Can be exemplified by urethane foam, steel wool and the like.
Among them, especially, use of urethane foam without cell membrane
preferable.
【０００６】多孔質体３は、クラック２の全体に亙る長
さの帯状に形成して用いるのが好ましく、その厚さは、
クラック２の間隔に対して２〜３倍程度とし、クラック
２の幅方向に圧縮した状態でクラック２内に挿入するの
が好ましい。またクラック２の間隔が比較的大きい場合
には、多孔質体３を２つ折りにした状態とするのが好ま
しいが、クラック２の間隔が比較的狭いときには折り曲
げていない状態としてクラック２内に挿入しても良い。The porous body 3 is preferably used in the form of a strip having a length extending over the entire crack 2.
It is preferable to insert the crack 2 in the crack 2 in a state of being compressed in the width direction of the crack 2 by about 2 to 3 times the interval between the cracks 2. When the interval between the cracks 2 is relatively large, it is preferable that the porous body 3 is folded in two. However, when the interval between the cracks 2 is relatively small, the porous body 3 is inserted into the crack 2 as unfolded. May be.
【０００７】次いで、液状止水剤を多孔質体３に注入
し、多孔質体３に含浸させる。止水剤としては、親水性
であり、かつ重合硬化型のもの、即ち１種類以上のモノ
マーを含み、該モノマーが重合する前の状態では粘度が
低く、流動性を有するが、上記モノマーの重合反応に伴
って硬化するタイプのもの、例えば、架橋性モノマーと
ビニルモノマーに重合触媒を水と共に添加したものが用
いられ、ビニルモノマーとしては親水性ビニルモノマー
が好ましく、親水性ビニルモノマーの例としては、（メ
タ）アクリル酸およびその金属塩、酢酸ビニル、ビニル
アルコール、マレイン酸及びその金属塩などを例示で
き、これらの中では（メタ）アクリル酸金属塩が好まし
い。（メタ）アクリル酸金属塩を形成する金属イオン
は、どのようなものも用いうるが、例えば、マグネシウ
ム塩を好ましく用いうる。Next, a liquid waterproofing agent is injected into the porous body 3 to impregnate the porous body 3. The water-stopping agent is a hydrophilic and polymerization-curable type, that is, it contains one or more types of monomers, and has a low viscosity and fluidity before the monomers are polymerized. A type that cures with the reaction, for example, a polymer obtained by adding a polymerization catalyst to a crosslinkable monomer and a vinyl monomer together with water is used.As the vinyl monomer, a hydrophilic vinyl monomer is preferable, and as an example of the hydrophilic vinyl monomer, , (Meth) acrylic acid and its metal salts, vinyl acetate, vinyl alcohol, maleic acid and its metal salts, and among them, (meth) acrylic acid metal salts are preferred. As the metal ion forming the metal (meth) acrylate, any metal ion can be used, and for example, a magnesium salt can be preferably used.
【０００８】架橋性モノマーとしては多官能性モノマー
が用いられ、これらの中では多官能性（メタ）アクリレ
ート類が好ましく、このような（メタ）アクリレートの
中でも比較的高い親水性を示すものとして１つ以上のア
ルキレングリコールからなる主鎖の両末端に（メタ）ア
クリロイルオキシ基がついたものがより好ましく、この
ような多官能性モノマーの具体例としては、エチレング
リコールジ（メタ）アクリレート、ジエチレングリコー
ルジ（メタ）アクリレート、トリエチレングリコールジ
（メタ）アクリレート、ポリエチレングリコールジ（メ
タ）アクリレート、プロピレングリコールジ（メタ）ア
クリレート、ジプロピレングリコールジ（メタ）アクリ
レート、ポリプロピレングリコールジ（メタ）アクリレ
ート等を例示できる。As the crosslinkable monomer, a polyfunctional monomer is used. Among these, polyfunctional (meth) acrylates are preferable, and among such (meth) acrylates, one having relatively high hydrophilicity is one. More preferably, a main chain composed of two or more alkylene glycols is provided with (meth) acryloyloxy groups at both ends. Specific examples of such polyfunctional monomers include ethylene glycol di (meth) acrylate, diethylene glycol di Examples include (meth) acrylate, triethylene glycol di (meth) acrylate, polyethylene glycol di (meth) acrylate, propylene glycol di (meth) acrylate, dipropylene glycol di (meth) acrylate, and polypropylene glycol di (meth) acrylate. .
【０００９】上記架橋性モノマーとビニルモノマーは、
混合後、一定の硬化時間で重合し、含水ゲル状態となっ
て硬化する。また止水剤としては、硬化した状態におい
て水に対し不溶であり、十分な伸縮性を有し、水密性、
即ち吸水することで膨潤する性質を有し、しかも耐薬品
性、耐バクテリア性、および耐酸、アルカリ性に優れた
ものを用いるのが好ましい。The crosslinkable monomer and vinyl monomer are
After mixing, the mixture is polymerized for a fixed curing time, and becomes a hydrogel state and is cured. In addition, as a water-stopping agent, it is insoluble in water in a cured state, has sufficient elasticity, watertightness,
That is, it is preferable to use a material having a property of swelling by absorbing water and having excellent chemical resistance, bacterial resistance, acid resistance and alkalinity.
【００１０】止水剤に用いられる重合触媒としては、レ
ドックス系触媒を用いるのが好ましい。レドックス系触
媒としては、例えば酸化剤成分として過硫酸アンモニウ
ム、過硫酸カリウムなどを含み、還元剤成分としてチオ
硫酸ナトリウム、ロンガリット、亜硫酸ナトリウム、ト
リエタノールアミンなどを含むものなどが使用可能であ
る。重合触媒の添加量は、通常、上記モノマー１００重
量部に対して０．１〜１００重量部とされるが、止水剤
の硬化時間が５〜６０秒となるように上記範囲の中から
適宜設定するのが好ましい。止水剤をこのような組成に
することにより、止水剤の硬化物は水と接触すると吸水
して膨張する性質を有するものとなる。[0010] As the polymerization catalyst used for the water stopping agent, a redox catalyst is preferably used. As the redox catalyst, for example, those containing ammonium persulfate, potassium persulfate and the like as oxidizing agents and sodium thiosulfate, Rongalite, sodium sulfite, triethanolamine and the like as reducing agents can be used. The amount of the polymerization catalyst to be added is usually 0.1 to 100 parts by weight with respect to 100 parts by weight of the monomer, but is appropriately selected from the above range so that the curing time of the water stopping agent is 5 to 60 seconds. It is preferable to set. When the water-stopping agent has such a composition, the cured product of the water-stopping agent has a property of absorbing water and expanding when it comes into contact with water.
【００１１】上記止水剤における各成分の配合比として
は、特に限定されるものではないが、多官能性モノマー
１２〜２４重量％、ビニルモノマー８〜１６重量％、水
５０〜７０重量％、レドックス触媒の中のアミン成分１
０重量％からなるＡ剤と、エチレングリコールと水の等
重量混合物に過酸化物０．５〜２重量％からなるＢ剤を
使用直前に混合したものなどを挙げることができる。The mixing ratio of each component in the water-stopping agent is not particularly limited, but is 12 to 24% by weight of a polyfunctional monomer, 8 to 16% by weight of a vinyl monomer, 50 to 70% by weight of water, Amine component 1 in redox catalyst
A mixture of 0% by weight of the A agent and an equal weight mixture of ethylene glycol and water and the B agent of 0.5 to 2% by weight of the peroxide are mixed immediately before use.
【００１２】止水剤は、上記各成分のうち少なくとも一
部を他成分から分離して重合反応が進行しないようにし
ておき、これらを使用直前に混合し、混合物が、未だ重
合反応が進行していない未硬化状態であるうちに多孔質
体３への注入を行うようにして使用する。The water-stopping agent is prepared by separating at least a part of the above components from other components so that the polymerization reaction does not proceed, and mixing them immediately before use. It is used so as to be injected into the porous body 3 while it is in an uncured state.
【００１３】多孔質体３に注入された未硬化状態の止水
剤は、クラック２内の多孔質体３全体に行き渡り、多孔
質体３と接するクラック２の内壁面に達し、該内壁面に
隙間なく接して完全にクラック２をシールした状態で硬
化する。この際、止水剤はクラック２の内壁面にほとん
ど接着することなく接した状態で硬化する。The uncured water-stopping agent injected into the porous body 3 spreads over the entire porous body 3 in the crack 2 and reaches the inner wall surface of the crack 2 in contact with the porous body 3. It cures in a state where the cracks 2 are completely sealed by contacting with no gap. At this time, the water-stopping agent hardens in a state of being almost in contact with the inner wall surface of the crack 2 without adhering.
【００１４】上記止水剤を、高機械強度の多孔質体３に
含浸させることにより、止水部分の機械強度は、単独の
止水剤を用いた場合に比べて高くなる。例えば、通常、
多孔質体３に含浸した状態で硬化した止水剤は、多孔質
体３に含浸させずに単独で硬化させた止水剤に比べて、
引張強度が約４０倍以上、圧縮強度が約１２５倍以上と
なることがわかっている。また、多孔質体３は、機械強
度が高いばかりでなく、伸縮性および圧縮弾性を有する
ものであるので、多孔質体３と止水剤からなる止水部分
は、高機械強度、かつ伸縮性および圧縮弾性を有するも
のとなる。[0014] By impregnating the porous material 3 with high mechanical strength with the water-stopping agent, the mechanical strength of the water-stopping portion is increased as compared with the case where a single water-stopping agent is used. For example, usually
The water-stopping agent cured while impregnating the porous body 3 is compared with the water-stopping agent cured alone without impregnating the porous body 3,
It has been found that the tensile strength is about 40 times or more and the compressive strength is about 125 times or more. Further, since the porous body 3 has not only high mechanical strength but also elasticity and compressive elasticity, the water-blocking portion composed of the porous body 3 and the waterproofing agent has high mechanical strength and elasticity. And it has compression elasticity.
【００１５】このため、気温変化などにより躯体１の温
度が変動してその長さが変動し、クラック２の間隔が拡
大または狭まった場合にも、多孔質体３および止水剤
は、破断することなくクラック２の間隔の変動に追従し
て変形し、クラック２をシールした状態を保つ。また、
止水剤の硬化物は、吸水して膨張する性質を有するた
め、漏水と接触して、漏水を吸収することによって膨潤
し、クラック２の内壁に一層密に接するようになり、止
水性がさらに高められる。For this reason, even when the temperature of the frame 1 fluctuates due to a change in air temperature and the length of the frame 1 fluctuates, and the interval between the cracks 2 is widened or narrowed, the porous body 3 and the waterproofing agent break. Deformation follows the change in the interval between the cracks 2 without causing the cracks 2 to remain sealed. Also,
Since the cured product of the water stopping agent has a property of absorbing water and expanding, it comes into contact with water leakage, swells by absorbing the water leakage, and comes into more close contact with the inner wall of the crack 2, thereby further improving the water stopping performance. Enhanced.
【００１６】上記止水工法にあっては、伸縮性および圧
縮弾性を有し、かつ高機械強度の多孔質体３をクラック
２内に挿入し、この多孔質体３に止水剤を注入するの
で、躯体１の長さが変動することによってクラック２の
間隔が拡大または狭まった場合でも、多孔質体３および
止水剤が、破断を起こすことなくクラック２の間隔変化
に合わせて変形してクラック２をシールした状態を保
ち、良好な止水性を維持することができる。また地震等
によって止水剤および多孔質体３に大きな外力が加わっ
た場合でも、破断することなく良好な止水性を維持する
ことができる。In the above waterproofing method, a porous body 3 having elasticity and compressive elasticity and having high mechanical strength is inserted into the crack 2, and a waterproofing agent is injected into the porous body 3. Therefore, even when the distance between the cracks 2 is increased or decreased due to a change in the length of the frame 1, the porous body 3 and the waterproofing agent are deformed according to the change in the distance between the cracks 2 without causing breakage. The cracks 2 can be kept in a sealed state, and good water stopping performance can be maintained. Also, even when a large external force is applied to the water stopping agent and the porous body 3 due to an earthquake or the like, good water stopping can be maintained without breaking.
【００１７】また、上記例では、多孔質体３をクラック
２に挿入した後に、多孔質体３に止水剤を注入するよう
にしたが、これに限らず、予め止水剤を多孔質体３に含
浸させておき、この多孔質体３を止水剤が未硬化のうち
にクラック２に挿入し、さらに止水剤を追加注入しても
良い。このように予め止水剤を多孔質体３に含浸させて
おくことによって、多孔質体３全体に止水剤が完全に浸
透し、多孔質体３を有効に利用でき、効果的な止水が可
能となる。Further, in the above example, after the porous body 3 is inserted into the crack 2, the water-stopping agent is injected into the porous body 3. However, the present invention is not limited to this. 3, the porous body 3 may be inserted into the crack 2 while the water-stopping agent is not yet cured, and the water-stopping agent may be additionally injected. By impregnating the porous body 3 with the water-stopping agent in advance as described above, the water-stopping agent completely penetrates the entire porous body 3, and the porous body 3 can be effectively used, and an effective water-stopping property can be obtained. Becomes possible.
【００１８】また、図２に示すように、予め躯体１に、
多孔質体３設置位置よりさらに深部に達する注入孔４を
設けておき、止水剤を含浸した多孔質体３をクラック２
内に配置した後、注入孔４から止水剤を注入し、多孔質
体３設置位置より深部に止水剤の層５を形成することに
より、より高度の止水性を得ることができる。Further, as shown in FIG.
An injection hole 4 is provided which extends deeper than the installation position of the porous body 3, and the porous body 3 impregnated with the waterproofing agent is cracked 2.
After being disposed in the inside, the water-stopping agent is injected from the injection hole 4 and the water-stopping agent layer 5 is formed deeper than the porous body 3 installation position, whereby a higher degree of water-stopping can be obtained.
【００１９】[0019]
【実施例】以下、具体例を示し、本発明の効果をさらに
明確にする。 （実施例１）長さ２０ｍ、高さ３ｍ、厚さ３０ｃｍの鉄
筋コンクリート製の既設の壁体のクラックおよび目地か
らの漏水に対して、本発明の止水工法を適用した。この
壁体は、一方の側面側が土に接し、他方の側面側は空間
となっており、半地下建築物のドライスペースを構成す
るものである。上記壁体には、幅３〜５ｍｍのクラック
が高さ方向に沿って数本発生しており、これより、常時
漏水が生じていた。また、幅５ｍｍのコンクリート目地
からも漏水が生じていた。上記クラックおよび目地の全
体に、幅３０ｍｍ、厚さ５ｍｍの帯状の多孔質体である
ウレタン発泡体を、長手方向に沿って２つ折りにし、厚
さ方向に圧縮した状態で挿入し、この発泡体に止水剤を
注入、含浸させた。上記止水剤としては、ポリエチレン
グリコールジメタクリレート２５重量％、アクリル酸マ
グネシウム１０重量％、水５５重量％、およびトリエタ
ノールアミン１０重量％からなるＡ剤と、エチレングリ
コール４９．５重量％、水４９．５重量％、および過硫
酸アンモニウム１重量％からなるＢ剤を使用直前に混合
したものを用いた。上記方法に従って止水を施した壁体
を１年間放置した後、クラックおよび目地から漏水が生
じたかどうかを調べた。EXAMPLES Hereinafter, specific examples will be shown to further clarify the effects of the present invention. (Example 1) The water stoppage method of the present invention was applied to cracks in existing reinforced concrete walls 20 m in length, 3 m in height, and 30 cm in thickness and leakage from joints. One side of this wall is in contact with the soil, and the other side is a space, and constitutes a dry space of a semi-underground building. Several cracks having a width of 3 to 5 mm were generated in the wall along the height direction, and water leakage always occurred. Water leakage also occurred from a concrete joint having a width of 5 mm. A urethane foam, which is a strip-like porous body having a width of 30 mm and a thickness of 5 mm, is folded in two along the longitudinal direction and inserted in a state of being compressed in the thickness direction into the entirety of the cracks and joints. Was injected and impregnated. Examples of the water-stopping agent include an A agent consisting of 25% by weight of polyethylene glycol dimethacrylate, 10% by weight of magnesium acrylate, 55% by weight of water, and 10% by weight of triethanolamine, 49.5% by weight of ethylene glycol, and 49% by weight of water. A mixture obtained by mixing the B agent consisting of 0.5% by weight and 1% by weight of ammonium persulfate immediately before use was used. After the water-stopped wall was left for one year according to the above-described method, it was examined whether cracks and leaks occurred from joints.
【００２０】（実施例２）上記止水剤を、ウレタン発泡
体に予め含浸させておき、止水剤が未硬化のうちにこの
発泡体を壁体のクラックおよび目地に挿入すること以外
は上記実施例１と同様にして止水を行った壁体を１年間
放置した後、クラックおよび目地に漏水が生じたかどう
かを調べた。Example 2 The urethane foam was impregnated with the water-stopping agent in advance, and the foam was inserted into cracks and joints of the wall while the water-stopping agent was not yet cured. After the water-stopped wall was left for one year in the same manner as in Example 1, it was examined whether cracks and joints had leaked.
【００２１】（比較例）実施例１と同様の壁体のクラッ
クおよび目地に、これらクラックおよび目地に沿う断面
Ｖ字状の溝を形成し、この溝に、ウレタン樹脂からなる
液状硬化型止水剤を配して上記溝を塞ぎ、止水剤を硬化
させ、この壁体を１年間放置した後、クラックおよび目
地に漏水が生じたかどうかを調べた。Comparative Example A groove having a V-shaped cross section along the cracks and joints was formed in the same cracks and joints in the wall as in Example 1, and a liquid curable water stop made of urethane resin was formed in the grooves. An agent was placed to close the groove, the water-stopping agent was cured, and the wall was allowed to stand for one year, after which it was examined whether cracks and joints had leaked.
【００２２】上記試験の結果、比較例の工法によって止
水された壁体では、クラックおよび目地内に配された止
水剤が破断することによってこの部分に隙間が生じ、漏
水が発生したのに対し、実施例１および２の工法によっ
て止水された壁体では、漏水が生じず、良好な止水性が
維持されたことがわかった。As a result of the above test, cracks and breaks in the water-stopping agent disposed in the joints caused gaps in the walls of the walls shut off by the method of the comparative example, resulting in water leakage. On the other hand, it was found that in the wall stopped by the methods of Examples 1 and 2, water leakage did not occur, and good water stopping was maintained.
【００２３】[0023]
【発明の効果】以上説明したように、本発明の止水工法
にあっては、外表面に連通する多孔質体を、漏水箇所の
みずみちの内部に挿入し、この多孔質体に、親水性重合
硬化型液状止水剤を注入し、含浸させるので、漏水箇所
の間隔が拡大または狭まった場合でも、多孔質体および
止水剤が、破断を起こすことなく漏水箇所の間隔変化に
合わせて変形して漏水箇所をシールした状態を保ち、良
好な止水性を維持することができる。また地震等によっ
て止水剤および多孔質体に大きな外力が加わった場合に
おいても、良好な止水性を維持することができる。As described above, in the water stopping method according to the present invention, the porous body communicating with the outer surface is inserted into the inside of the water only at the leaked portion, and the porous body is hydrophilically inserted. Injection and impregnation of a water-soluble polymerization-hardening type liquid waterproofing agent, even if the distance between the leaking points is expanded or narrowed, the porous body and the water-blocking agent are adjusted to the change in the distance between the leaking points without causing breakage. It is possible to maintain the state where the water leakage point is sealed and deformed, and maintain good water stoppage. In addition, even when a large external force is applied to the water blocking agent and the porous body due to an earthquake or the like, good water stopping properties can be maintained.
【００２４】また、多孔質体に、予め親水性重合硬化型
液状止水剤を含浸しておき、この多孔質体を、漏水箇所
のみずみちの内部に挿入することによって、止水剤を多
孔質体全体に完全に浸透させ、より効果的な止水を行な
うことができる。Also, the porous body is impregnated with a hydrophilic polymerization-curable liquid water-stopping agent in advance, and the porous body is inserted into only the water leaking portion to make the water-stopping agent porous. It is possible to completely permeate the entire body and perform more effective water stoppage.
【図１】 本発明の止水工法の一例によって止水された
躯体を示す断面図である。FIG. 1 is a cross-sectional view showing a skeleton that has been stopped by an example of a water stopping method according to the present invention.
【図２】 本発明の止水工法の他の例によって止水され
た躯体を示す断面図である。FIG. 2 is a cross-sectional view showing a skeleton that has been stopped by another example of the water stopping method of the present invention.
【図３】 従来の止水工法の例によって止水された躯体
を示す断面図である。FIG. 3 is a cross-sectional view showing a skeleton that has been stopped by an example of a conventional waterproofing method.
２・・・クラック（漏水箇所）、３・・・多孔質体 2 ... crack (water leakage point) 3 ... porous body
フロントページの続き (72)発明者 澤田 健司 神奈川県横浜市鶴見区大黒町10番１号 日 東化学工業株式会社中央研究所内 (72)発明者 面 民一郎 東京都千代田区丸の内一丁目５番１号 日 東化学工業株式会社内 (72)発明者 多田 利三 神奈川県横浜市金沢区能見台３丁目51番１ 号Continuation of the front page (72) Inventor Kenji Sawada 10-1 Ogurocho, Tsurumi-ku, Yokohama-shi, Kanagawa Prefecture Nichito Kagaku Kogyo Co., Ltd. Central Research Laboratory (72) Inventor Minichiro Asu 1-5-1 Marunouchi, Chiyoda-ku, Tokyo No. Nitto Chemical Industry Co., Ltd. (72) Inventor Toshizo Tada 3-51-1, Nomidai, Kanazawa-ku, Yokohama-shi, Kanagawa
Claims (2)
のみずみちの内部に挿入し、この多孔質体に、親水性重
合硬化型液状止水剤を注入し、含浸させることを特徴と
する止水工法。1. A porous body communicating with the outer surface is inserted into a water hole only at a leak location, and a hydrophilic polymerization-curable liquid waterproofing agent is injected into the porous body and impregnated. And the waterproofing method.
性重合硬化型液状止水剤を含浸しておき、この多孔質体
を、漏水箇所のみずみちの内部に挿入することを特徴と
する止水工法。2. A porous body communicating with the outer surface is impregnated with a hydrophilic polymerization-curable liquid waterproofing agent in advance, and the porous body is inserted only into the water leaking portion into the inside of the stream. And the waterproofing method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33878296A JP3760011B2 (en) | 1996-12-18 | 1996-12-18 | Water stop method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33878296A JP3760011B2 (en) | 1996-12-18 | 1996-12-18 | Water stop method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10176422A true JPH10176422A (en) | 1998-06-30 |
| JP3760011B2 JP3760011B2 (en) | 2006-03-29 |
Family
ID=18321423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33878296A Expired - Fee Related JP3760011B2 (en) | 1996-12-18 | 1996-12-18 | Water stop method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3760011B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100399874B1 (en) * | 2001-05-09 | 2003-09-29 | 엠에스아시아 주식회사 | Protecting method against water leakage of concrete cracks |
| KR100454605B1 (en) * | 2002-05-23 | 2004-11-05 | 유창열 | High-density and pressurization repair method about new/old concrete joint part |
| JP2019178485A (en) * | 2018-03-30 | 2019-10-17 | 日本バンデックス株式会社 | Water cut-off construction method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05222845A (en) * | 1992-02-12 | 1993-08-31 | Shimizu Corp | Crack repairing method for concrete structure |
-
1996
- 1996-12-18 JP JP33878296A patent/JP3760011B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05222845A (en) * | 1992-02-12 | 1993-08-31 | Shimizu Corp | Crack repairing method for concrete structure |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100399874B1 (en) * | 2001-05-09 | 2003-09-29 | 엠에스아시아 주식회사 | Protecting method against water leakage of concrete cracks |
| KR100454605B1 (en) * | 2002-05-23 | 2004-11-05 | 유창열 | High-density and pressurization repair method about new/old concrete joint part |
| JP2019178485A (en) * | 2018-03-30 | 2019-10-17 | 日本バンデックス株式会社 | Water cut-off construction method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3760011B2 (en) | 2006-03-29 |
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