JPH09221842A - Water cut-off material - Google Patents

Water cut-off material

Info

Publication number
JPH09221842A
JPH09221842A JP8029697A JP2969796A JPH09221842A JP H09221842 A JPH09221842 A JP H09221842A JP 8029697 A JP8029697 A JP 8029697A JP 2969796 A JP2969796 A JP 2969796A JP H09221842 A JPH09221842 A JP H09221842A
Authority
JP
Japan
Prior art keywords
water
bentonite
expansion
plastic
lateral direction
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
Application number
JP8029697A
Other languages
Japanese (ja)
Inventor
Takeshi Nakamura
武司 中村
Shinichi Saji
慎一 佐治
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kunimine Industries Co Ltd
Original Assignee
Kunimine Industries Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kunimine Industries Co Ltd filed Critical Kunimine Industries Co Ltd
Priority to JP8029697A priority Critical patent/JPH09221842A/en
Publication of JPH09221842A publication Critical patent/JPH09221842A/en
Pending legal-status Critical Current

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  • Soil Conditioners And Soil-Stabilizing Materials (AREA)
  • Building Environments (AREA)
  • Sealing Material Composition (AREA)

Abstract

PROBLEM TO BE SOLVED: To improve the initial water cut-off function by composing a meshy regulating material around a rod-like bentonite water cutoff material as a water cut-off/waterproof material for the cement placing joint of a concrete structure. SOLUTION: A meshy regulating material easily extended in the lateral direction and not extended in the longitudinal direction is fitted on the outer periphery of a rod-like bentonite water-swelling plastic material 1 as a water cutoff material. When the regulating material 2 is brought into contact with water, it prevents the expansion in the longitudinal direction of the plastic material 1, converts the longitudinal expansion into the expansion force in the lateral direction, and increases the expansion force in the lateral direction. The plastic material 1 is water-expanded through the rhombic spaces 5 formed with connection sections 3 of fibers 4 of the regulating material 2 as apexes to close the gaps between an existing concrete face and a placing joint concrete face, water is primarily cut off instantaneously, and the initial leak from the placing joint is almost prevented.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は、コンクリート構造
物のセメント材打ち継ぎ目等の止水、防水材料に関す
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof and waterproof material for cement joints of concrete structures.

【0002】[0002]

【従来の技術】従来の土木工事におけるセメント打ち継
ぎ目等の防水には、古くは鉄板、近年は高分子系成形止
水板等が使用されてきた。この中で鉄板は施工性、腐食
による長期信頼性に問題があり、それに代えて高分子材
料の定形止水板が使用されてきた。しかし、これらの高
分子系止水板は施工時における取りつけが時間がかか
り、施工費、材料の価格の面に難点がある。また、水膨
張性の定型ゴム止水も使用されてきているが、やはり価
格が高い。そこで最近においては、低コストと施工性の
改善のため、固形ベントナイトの粒状体を網袋に詰めた
ものや、高分子材料バインダーで成形された定型止水材
があるが、前者は施工性に問題を残し、後者は初期止水
反応速度に問題を残している。
2. Description of the Related Art For waterproofing cement joints and the like in conventional civil engineering work, iron plates have been used in the past, and polymer type water blocking plates and the like have been used in recent years. Among them, iron plates have problems in workability and long-term reliability due to corrosion, and in place thereof, polymeric water blocking plates have been used. However, these polymer water blocking plates require a long time for mounting during construction, and there are problems in terms of construction cost and material price. Water-expandable standard rubber still water has also been used, but it is still expensive. Therefore, in recent years, in order to reduce cost and improve workability, solid bentonite granules are packed in a mesh bag, and there is a fixed waterproof material molded with a polymer material binder. The latter remains a problem, the latter leaving a problem with the initial water-stopping reaction rate.

【0003】一方、コンクリートの打ち継ぎ目に用いる
ものとしてベントナイト系鉱物を鉱物油などに分散混合
した粘土状可塑性の止水材が提案されている(特開昭5
5−42291号及び特願平6−330467号)。し
かしこれらは従来のものに比べ、止水性能、施工性は改
善したが、防水個所に対する施工性がまだ十分とはいえ
ないものであった。
On the other hand, a clay-like plastic water-stopping material in which bentonite-based minerals are dispersed and mixed in mineral oil or the like has been proposed for use as a joint for concrete joints (Japanese Patent Laid-Open No. Sho 5).
No. 5-42291 and Japanese Patent Application No. 6-330467). However, although these have improved waterproof performance and workability as compared with the conventional ones, they cannot be said to have sufficient workability for waterproof parts.

【0004】[0004]

【発明が解決しようとする課題】すなわち、このような
可塑性止水材に要求されるセメント打ち継ぎ目の防水施
工における止水機能をみてみると、施工直後、漏水時の
瞬間からベントナイトが水と接触して膨潤し、水みちを
閉塞するまでというようなレンジでの初期止水機能とベ
ントナイトの主成分であるモンモリロナイトが層間また
は粒子間に水分子を取り込み、束縛することで水分子を
動きにくくすることで行われるという、水がベントナイ
トとその周囲に進入し、その後反対側に達するまでの長
期的止水機能に分けることができる。水膨潤性ベントナ
イトを主材とする従来の粘土状可塑性止水材は、この初
期止水機能において不十分であり、止水機能が漏水時に
急激に立ち上がり難いという問題があった。したがっ
て、本発明は、水膨張性ベントナイトを主材とした粘土
状可塑性止水材に残された課題である、初期止水機能の
確保を達成するとともに、上記の従来の止水材の性能を
さらに向上した止水材を提供することを目的とする。
That is, looking at the water-stopping function in the waterproof construction of cement seams required for such a plastic water-stopping material, bentonite comes into contact with water immediately after construction and from the moment of water leakage. Swells and swells until it blocks water channels, and the main component of bentonite, montmorillonite, takes in water molecules between layers or particles and binds them to make them difficult to move. It can be divided into a long-term water-stopping function, which is that water enters bentonite and its surroundings and then reaches the opposite side. The conventional clay-like plastic water-stopping material containing water-swelling bentonite as a main material is insufficient in this initial water-stopping function, and there is a problem that the water-stopping function is hard to rise rapidly when water leaks. Therefore, the present invention, which is a problem left in the clay-like plastic water-stopping material mainly composed of water-expandable bentonite, achieves the initial water-stopping function, and the performance of the above-mentioned conventional water-stopping materials. It is an object of the present invention to provide a further improved waterproof material.

【0005】[0005]

【課題を解決するための手段】本発明者は、最近の水膨
張性ベントナイトを主材とした粘土状可塑性止水材に着
目し研究した結果、可塑性を与えた所定形状に成形した
ベントナイト系止水材料において、その周囲に、展張し
て菱形又は亀甲形、あるいはこれに類似した形状の網状
体(調節材)を複合することにより、可塑性ベントナイ
ト材料の軸直角方向の膨張力を高めるとともに初期止水
機能を向上させることができ、かつ、膨張応力を著しく
安定化しうることを見い出し、この知見に基づき本発明
を完成するに至った。
Means for Solving the Problems The present inventor has paid attention to a recent clay-like plastic water-stopping material mainly composed of water-expandable bentonite. In the water material, by expanding it and compounding a rhombus, a hexagonal shape, or a mesh-like body (regulating material) of a shape similar to this, the expansion force in the direction perpendicular to the axis of the plastic bentonite material is increased and the initial stop It was found that the water function can be improved and the expansion stress can be remarkably stabilized, and the present invention has been completed based on this finding.

【0006】すなわち本発明は、(1)水膨潤性を有す
る粘土鉱物を含んでなる水膨潤性可塑性材に、縦方向に
は伸びず、横方向には展開する調節材を複合してなるこ
とを特徴とする止水材、(2)調節材が網状体である
(1)項記載の止水材、及び(3)止水材がコンクリー
ト打ち継ぎ目用である(1)又は(2)項記載の止水材
を提供するものである。
That is, according to the present invention, (1) a water-swelling plastic material containing a clay mineral having water-swelling property is combined with a control material which does not extend in the longitudinal direction but expands in the lateral direction. Water-stopping material characterized in that, (2) the water-stopping material according to item (1), wherein the adjusting material is a mesh, and (3) the water-stopping material for concrete joints (1) or (2). The water blocking material is provided.

【0007】[0007]

【発明の実施の形態】本発明に用いられる水膨潤性可塑
性材としては特に制限はないが、それ自体可塑性(常温
で任意の形状に変形でき)で、かつ、吸水して膨潤し、
コンクリートの継ぎ目を塞ぎ水圧に対して防水するため
に十分な程度の膨潤度を有するものであればよい。これ
は例えば次のようなものである。本発明に用いられる水
膨潤性を有する鉱物を含んでなる水膨潤性可塑性材とし
ては、水膨潤性鉱物を非水系ゲル中に均一に分散した、
可塑性を有する止水材があげられ、主として水膨潤性鉱
物、非水系液体と任意のゲル化剤から得られるものであ
る。水膨潤性を有する粘土鉱物としては、例えばベント
ナイト、サポナイト、ヘクトライト等のスメクタイト系
粘土鉱物や膨潤性雲母を用いることができる。これらは
天然、合成のいずれでもよく、また、未変性のもので
も、変性して親油性としたものでもよい。さらに、1種
を単独で用いてもよいし、2種以上を混合してもよい。
天然に産する無機系の粘土であるため安全性に優れ、か
つ土中の微生物に分解されることがなく長期的に止水効
果を保持できるので、ベントナイトが特に好ましい。
BEST MODE FOR CARRYING OUT THE INVENTION The water-swellable plastic material used in the present invention is not particularly limited, but is plastic (it can be transformed into an arbitrary shape at room temperature) itself, and swells by absorbing water.
Any material having a degree of swelling sufficient to close the seams of concrete and waterproof it against water pressure may be used. This is as follows, for example. As the water-swellable plastic material containing a water-swellable mineral used in the present invention, a water-swellable mineral is uniformly dispersed in a non-aqueous gel,
Examples of the water blocking material having plasticity include those obtained mainly from a water-swelling mineral, a non-aqueous liquid and an arbitrary gelling agent. Examples of the water-swelling clay mineral include smectite-based clay minerals such as bentonite, saponite, and hectorite, and swelling mica. These may be natural or synthetic, and may be unmodified or modified to be lipophilic. Furthermore, one kind may be used alone, or two or more kinds may be mixed.
Bentonite is particularly preferable because it is a naturally occurring inorganic clay, which is excellent in safety and can be retained for a long period of time without being decomposed by microorganisms in the soil.

【0008】非水系液体としては、例えば鉱油、芳香族
炭化水素系油、脂肪族炭化水素系油などを用いることが
できる。これらも天然、合成のいずれでもよく、また、
単独でも、2種以上混合して用いてもよい。止水材の長
期安定性の点からは、微生物に分解されにくい鉱油が好
ましく用いられる。また、粘性の高い非水系液体を選択
することにより、ゲル化剤の使用量を少量に抑えること
ができる。ゲル化剤は、パラフィンろう、脂肪酸の金属
塩、ケイ酸マグネシウムをはじめとして、通常、非水系
液体のゲル化又は増粘に用いられているゲル化剤であれ
ばいずれも用いることができ、特に制限はない。本発明
においては、金属(好ましくはアルカリ土類金属)の水
酸化物又は酸化物を脂肪酸とともに油に添加して反応さ
せ、ゲル化基油としたものが熱安定性などの点から好ま
しい。
As the non-aqueous liquid, for example, mineral oil, aromatic hydrocarbon oil, aliphatic hydrocarbon oil, etc. can be used. These may be natural or synthetic, and
You may use individually or in mixture of 2 or more types. From the viewpoint of long-term stability of the waterproofing material, mineral oil that is not easily decomposed by microorganisms is preferably used. In addition, the amount of the gelling agent used can be suppressed to a small amount by selecting a non-aqueous liquid having high viscosity. The gelling agent may be any gelling agent which is usually used for gelling or thickening non-aqueous liquids, including paraffin wax, metal salts of fatty acids, and magnesium silicate. There is no limit. In the present invention, it is preferable from the viewpoint of thermal stability that a gelled base oil is prepared by adding a hydroxide or oxide of a metal (preferably an alkaline earth metal) together with a fatty acid to the oil and reacting the oil.

【0009】この、ゲル化基油を用いた止水材について
さらに詳しく説明する。ゲル化基油に用いる金属の水酸
化物又は酸化物の具体例としては、例えば、水酸化カル
シウム、水酸化マグネシウム、水酸化アルミニウム、酸
化カルシウム、酸化マグネシウム、酸化アルミニウム等
を挙げることができるが、水酸化カルシウム、水酸化ア
ルミニウムが好ましく、水酸化カルシウムが特に好まし
い。ゲル化基油に用いられる油としては、鉱油、天然も
しくは合成の芳香族炭化水素系油、及び天然もしくは合
成の脂肪族炭化水素系油からなる群から選ばれる少なく
とも1種が用いられる。これらの中で鉱油が好ましく、
より好ましい具体例としては、例えば、高芳香族系鉱油
を挙げることができる。鉱油は微生物に分解されにくい
ので、鉱油を添加することにより、止水材に長期安定性
を付与することができる。脂肪酸としては、従来知られ
ている各種の脂肪酸を用いることができるが、好ましく
は高級脂肪酸、例えば1分子中に約10〜40の炭素原
子を有する飽和もしくは不飽和脂肪酸であり、具体例と
して、ラウリン酸、ステアリン酸、パルミチン酸、オレ
イン酸、リシノール酸等が挙げられる。この内、1分子
中に約10〜30の炭素原子を有する飽和脂肪酸がさら
に好ましく、ラウリン酸、ステアリン酸及びパルミチン
酸が特に好ましい。ゲル化基油を形成する反応は、加熱
により行わせることができ、反応温度に特に制限はない
が、好ましくは70℃以上、さらに好ましくは90℃以
上である。この反応時間は特に制限はなく、ゲル化が十
分に進行する時間であればよい。
The water blocking material using the gelled base oil will be described in more detail. Specific examples of the metal hydroxide or oxide used for the gelled base oil include calcium hydroxide, magnesium hydroxide, aluminum hydroxide, calcium oxide, magnesium oxide, aluminum oxide, and the like. Calcium hydroxide and aluminum hydroxide are preferable, and calcium hydroxide is particularly preferable. As the oil used as the gelled base oil, at least one selected from the group consisting of mineral oil, natural or synthetic aromatic hydrocarbon oil, and natural or synthetic aliphatic hydrocarbon oil is used. Of these, mineral oil is preferred,
More preferred specific examples include highly aromatic mineral oils. Since mineral oil is not easily decomposed by microorganisms, long-term stability can be imparted to the waterproof material by adding mineral oil. As the fatty acid, various conventionally known fatty acids can be used, but higher fatty acids, for example, saturated or unsaturated fatty acids having about 10 to 40 carbon atoms in one molecule are preferable. Examples thereof include lauric acid, stearic acid, palmitic acid, oleic acid and ricinoleic acid. Among these, saturated fatty acids having about 10 to 30 carbon atoms in one molecule are more preferable, and lauric acid, stearic acid and palmitic acid are particularly preferable. The reaction for forming the gelled base oil can be carried out by heating, and the reaction temperature is not particularly limited, but is preferably 70 ° C or higher, more preferably 90 ° C or higher. The reaction time is not particularly limited, and may be any time as long as gelation proceeds sufficiently.

【0010】このゲル化基油は止水材中に10〜60重
量%、好ましくは20〜50重量%、さらに好ましくは
25〜40重量%配合される。ゲル化基油中の油と脂肪
酸は、油100重量部に対して脂肪酸を通常10〜10
0重量部、好ましくは25〜80重量部、さらに好まし
くは40〜65重量部用いる。また、金属の水酸化物又
は酸化物の使用量は、前記脂肪酸を金属の塩とするのに
十分な量であれば特に限定されない。通常、金属の水酸
化物又は酸化物を、脂肪酸と化学量論量用いるが、脂肪
酸と金属の水酸化物又は酸化物とを、一方が他方に対し
て少過剰となるように用いてもよい。具体的には、金属
の水酸化物又は酸化物の使用量は、その金属で換算した
量として、脂肪酸に対して好ましくは0.5〜2当量、
さらに好ましくは0.8〜1.5当量である。この止水
材では、油により親油性が、また脂肪酸と金属の水酸化
物又は酸化物とにより可塑性が付与されるので、好まし
く用いることができる。
The gelled base oil is blended in the waterproofing material in an amount of 10 to 60% by weight, preferably 20 to 50% by weight, more preferably 25 to 40% by weight. The oil and fatty acid in the gelled base oil are usually 10 to 10 parts by weight with respect to 100 parts by weight of the oil.
0 parts by weight, preferably 25 to 80 parts by weight, more preferably 40 to 65 parts by weight. The amount of the metal hydroxide or oxide used is not particularly limited as long as it is an amount sufficient to convert the fatty acid into a metal salt. Usually, a metal hydroxide or oxide is used in a stoichiometric amount with a fatty acid, but a fatty acid and a metal hydroxide or oxide may be used so that one of them is in a slight excess with respect to the other. . Specifically, the amount of the metal hydroxide or oxide used is preferably 0.5 to 2 equivalents with respect to the fatty acid, as the amount converted by the metal.
More preferably, it is 0.8 to 1.5 equivalents. This water-stopping material is preferably used because oil imparts lipophilicity and fatty acid and metal hydroxide or oxide impart plasticity.

【0011】これらの配合の割合は、選択した成分や所
望する止水材の性能に応じて適宜決定されるが、好まし
くは前記粘土を40〜90重量%、好ましくは50〜8
0重量%、さらに好ましくは60〜75重量%用いる。
そのさらに詳細については、特願平6−330467号
に記載がある。また特開昭55−42291号に記載の
ものも使用できる。
The mixing ratio of these is appropriately determined depending on the selected components and the desired performance of the water blocking material, but preferably 40 to 90% by weight, preferably 50 to 8% by weight of the clay.
0% by weight, more preferably 60 to 75% by weight is used.
Further details are described in Japanese Patent Application No. 6-330467. Also, those described in JP-A-55-42291 can be used.

【0012】本発明に用いられる調節材は、縦方向には
伸びず、横方向には容易に展伸できる特性を有してい
る。この調節材の材料、製作方法などについては特に制
限はないが、例えば、高分子フィルムの長手方向に適当
な規則的不連続スリットを入れるか、ストランド繊維布
の縦単繊維を規則的に部分的溶接着することにより網状
体を製作することができる。また、可塑性を与えたベン
トナイト材料の外周に同時複合する場合は、ブレーダー
による円筒状の網、またはブレーダー繊維の角度を最小
にしたニッティング加工をする。この複合繊維材料には
水溶性の材料を使用する場合もある。
The adjusting material used in the present invention has a characteristic that it does not extend in the longitudinal direction and can easily be extended in the lateral direction. There are no particular restrictions on the material and manufacturing method of this adjusting material, but for example, appropriate regular discontinuous slits may be provided in the longitudinal direction of the polymer film, or the longitudinal single fibers of the strand fiber cloth may be regularly and partially formed. A net can be manufactured by welding. Further, in the case where the bentonite material having plasticity is simultaneously compounded on the outer circumference, a braided cylindrical net or a knitting process in which the angle of the braider fiber is minimized is performed. A water-soluble material may be used as the composite fiber material.

【0013】本発明の止水材の製造法の一例について説
明すると、筒状の調節材に軸方向に張力をかけつつ、水
膨潤性の可塑性材をその中に垂下して複合して作ること
ができる。この筒状調節材は施工時の該複合止水材の軸
方向の伸びを制約し、施工の確実性を高める。それとと
もに、この筒状調節材は周方向(軸に直角の方向)に容
易に拡大できる性質を有しているので、軸方向のベント
ナイトの膨張を制止し、周方向にのみ膨張させるので、
コンクリート打ち継ぎ目の安定止水に必要な均一膨張面
圧を、継ぎ目に集中して与えることができる。
An example of the method for producing the water blocking material of the present invention will be explained. A water swelling plastic material is hung down in the tubular adjusting material while being axially tensioned to form a composite material. You can This tubular adjusting material restricts the axial extension of the composite water blocking material during construction and enhances construction reliability. At the same time, since this tubular adjusting material has a property that it can be easily expanded in the circumferential direction (direction perpendicular to the axis), it suppresses the expansion of bentonite in the axial direction and expands it only in the circumferential direction.
The uniform expansion surface pressure required for stable water stoppage of the concrete joint can be concentrated on the joint.

【0014】本発明の止水材の形状、大きさには特に制
限はない。通常、棒状、角材状、板状、テープ状など、
どのような形でもよい。本発明の止水材は、実施態様と
して、種々の製品の形態をとりうる。例えば、水膨潤性
材の外側に該調節材を複合したもの、調節材に水膨潤性
可塑材を被覆(スプレッド)したもの、及びこれらの止
水材を渦巻き状にしたもの(例えば図4)、抗張力芯材
(6)を水膨潤性可塑材の芯に有し、その外周に該調節
材を複合したもの(例えば図5)等がある。なお図4、
5において、図1と同符号は同じものを示す。また、こ
の止水材を生産する水平方向の生産システムにおいては
引き取り方向の伸びのない張力を利用し、引き取り速度
を上げることができる。また垂直方向の製造システムを
使用すれば、垂直押し出しの該可塑性材を筒状調節材の
中に効率よく垂下引き取り、張力をかけつつ複合ができ
る。さらにブレーディング、ニッティング方式編組機を
使用すれば、糸の張力の調整により、さらに製造スピー
ドを上げることが可能になる。この場合、必要に応じ
て、該水膨潤性可塑性材の芯に軸方向の伸びを抑制する
抗張力材を使用することができる。したがって、本発明
の止水材は性能の安定性、施工性の向上が確保できるば
かりでなく、それ自体の生産性が向上できる。
The shape and size of the water blocking material of the present invention are not particularly limited. Usually, rod, square, plate, tape, etc.
Any shape is acceptable. The water-stopping material of the present invention can take various product forms as an embodiment. For example, a composite of the water-swellable material with the adjusting material, a material of the adjusting material coated with a water-swelling plastic material (spread), and a water-stopping material formed into a spiral shape (for example, FIG. 4). , A tensile strength core material (6) is provided in the core of a water-swelling plastic material, and the adjusting material is compounded on the outer periphery thereof (for example, FIG. 5). Note that FIG.
5, the same symbols as in FIG. 1 indicate the same things. Further, in the horizontal production system for producing this water blocking material, it is possible to increase the take-up speed by utilizing the tension which does not extend in the take-up direction. Also, if a vertical manufacturing system is used, the vertically extruded plastic material can be efficiently drooped into the tubular adjusting material and compounded while applying tension. Furthermore, if a braiding and knitting type braiding machine is used, it is possible to further increase the production speed by adjusting the tension of the yarn. In this case, if necessary, a tensile strength material that suppresses axial elongation can be used as the core of the water-swellable plastic material. Therefore, the water blocking material of the present invention can not only ensure the stability of the performance and the improvement of the workability, but also improve the productivity of itself.

【0015】[0015]

【実施例】次に、本発明を図示実施例に従って詳述する
が、これによって本発明が限定されるものではない。 実施例1 図1は、本発明に係る止水材の一実施例の説明図であ
る。棒状のベントナイト系可塑性材(1)は、縦方向に
は伸びず、横方向には容易に伸びて網目状を呈する調節
材(2)をその外周面に有する。(3)は調節材(2)
の繊維(4)の連結部、(5)は菱形の空間である。ベ
ントナイト系の可塑性材(1)(直径20mm)は、こ
の空間(5)を通って既設コンクリート面と打ち継ぎコ
ンクリート面の間隙を塞ぐように水膨張し、瞬間的に1
次止水し打ち継ぎ目からの初期漏れを皆無に近いものと
できる効果を確認できた。これは、この止水材の長さ方
向の膨張が阻止され、その方向の膨張力が軸に直角方向
の膨張力に加わり、横方向に膨張力が集中したためと考
えられる。
The present invention will now be described in detail with reference to the illustrated embodiments, but the present invention is not limited thereto. Example 1 FIG. 1 is an explanatory diagram of an example of a water blocking material according to the present invention. The rod-shaped bentonite plastic material (1) has on its outer peripheral surface a regulating material (2) which does not extend in the longitudinal direction but easily extends in the lateral direction and has a mesh shape. (3) is adjusting material (2)
(5) is a rhombic space. The bentonite-based plastic material (1) (diameter 20 mm) is water-expanded so as to fill the gap between the existing concrete surface and the splice concrete surface through this space (5) and momentarily 1
It was confirmed that the next stoppage of water and the initial leakage from the spliced joint could be made almost zero. It is considered that this is because the expansion of the water blocking material in the length direction is blocked, the expansion force in that direction is added to the expansion force in the direction perpendicular to the axis, and the expansion force is concentrated in the lateral direction.

【0016】図2は、本発明に用いるのに好適な調節材
(2)の基本構造を収縮時の状態で示す説明図である。
この(2)は縦繊維(4)が一定の間隔で、半ピッチず
らした状態で部分結合して連結部(3)が形成されてい
る。この実施例に使用した調節材(2)は、溶着部のピ
ッチが10mmのものを使用した。A−A’方向には縦
繊維による抗張力で伸びず、B−B’方向には菱形空間
面積を広げて自由に伸びる。
FIG. 2 is an explanatory view showing the basic structure of the adjusting material (2) suitable for use in the present invention in a state of contraction.
In this (2), the longitudinal fibers (4) are formed at a constant interval and are partially joined in a state of being shifted by a half pitch to form a connecting portion (3). The adjusting material (2) used in this example had a welded portion pitch of 10 mm. It does not extend in the AA 'direction due to the tensile strength of the longitudinal fibers, and freely extends in the BB' direction by expanding the rhombic space area.

【0017】図3は、止水材(1)に水が触れ、ベント
ナイト系可塑材が水膨張した時の調節材(2)の状態を
示す。この時は(2)はA−A’方向の抗張力による制
約により、可塑性ベントナイト材の膨張応力は、B−
B’の方向に集中された。試験によれば、該調節材は可
塑性ベントナイト(1)の水膨張機能を阻害することな
く、この止水材(1)はコンクリート打ち継ぎの隙間を
瞬間的に1次止水を果たすと共に、水位10mの水圧に
対応できる止水性能を長期に維持することができ、長期
信頼性を高めうることを確認できた。
FIG. 3 shows a state of the adjusting material (2) when the bentonite-based plastic material is water-expanded by contacting the water blocking material (1) with water. At this time, (2) is restricted by the tensile strength in the AA 'direction, and the expansion stress of the plastic bentonite material is B-
Focused on B'direction. According to the test, the water-stopping material (1) instantaneously performs the primary water-stopping in the gap of the concrete splicing joint, and the water level, without inhibiting the water expansion function of the plastic bentonite (1). It was confirmed that the water-stop performance that can withstand a water pressure of 10 m can be maintained for a long period of time, and long-term reliability can be improved.

【0018】[0018]

【発明の効果】本発明の止水材は、以下のような優れた
効果を奏するものである。 (a)コンクリートの打ち継ぎ目などに適用されて横剪
断応力を高められ、初期止水を安定できると共に、水位
の高い地下水に対する防水においても長期安定性を確保
できる。 (b)従来解決が困難であった、補強材、バインダー等
の使用による止水性能低下に対する施工性の改善が、調
節材の軸方向の張力と外周方向の自由水膨張保持によ
り、著しく向上でき、施工安定性、施工効率を上げるこ
とができる。 (c)また、本発明の止水材において、水膨潤性可塑材
に調節材を、横方向拡張性を利用して容易に装着でき、
この止水材製造の生産性を著しく高めることができ、大
幅な生産コストの引き下げが可能になる。本発明の止水
材は、止水、防水の目的で各種の用途に使用することが
できるが、特に、コンクリート構造物の打ち継ぎ目の施
工性、経時の長期信頼性を確保するための利用効果は大
きく、構造物の地下室や水槽、その他、初期及び長期止
水性を必要とする構造物のセメント打ち継ぎ目の止水、
防水に好適である。
The water blocking material of the present invention has the following excellent effects. (A) It can be applied to concrete joints and the like to increase lateral shear stress, stabilize initial water stoppage, and ensure long-term stability in waterproofing groundwater having a high water level. (B) The improvement of the workability against the deterioration of the waterproof performance due to the use of a reinforcing material, a binder, etc., which was difficult to solve conventionally, can be significantly improved by the axial tension of the adjusting material and the free water expansion retention in the outer peripheral direction. The construction stability and construction efficiency can be improved. (C) Further, in the water blocking material of the present invention, the water swelling plastic material and the adjusting material can be easily attached by utilizing the lateral expandability,
The productivity of the waterproof material can be remarkably increased, and the production cost can be significantly reduced. The water-stopping material of the present invention can be used for various purposes for the purpose of water-stopping and waterproofing, but in particular, the workability of the pour joint of the concrete structure and the utilization effect for ensuring long-term reliability over time. Is large, the basement or water tank of the structure, etc., the waterproofing of the cement cement joint of the structure that requires initial and long-term waterproofing,
Suitable for waterproofing.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の止水材の一実施例の製法説明図であ
る。
FIG. 1 is an explanatory view of a manufacturing method of an embodiment of a water blocking material of the present invention.

【図2】本発明の止水材の一実施例に用いられる調節材
の基本構造図である。
FIG. 2 is a basic structural diagram of a control material used in one embodiment of the water blocking material of the present invention.

【図3】本発明の止水材の一実施例に用いられる調節材
の状態図である。
FIG. 3 is a state diagram of the adjusting material used in one embodiment of the water blocking material of the present invention.

【図4】本発明の止水材の他例の説明図である。FIG. 4 is an explanatory diagram of another example of the water blocking material of the present invention.

【図5】本発明の止水材の他例の説明図である。FIG. 5 is an explanatory diagram of another example of the water blocking material of the present invention.

【符号の説明】[Explanation of symbols]

1 可塑性止水材 2 調節材 3 調節材の繊維連結部 4 繊維 5 調節材の網目 1 plastic water blocking material 2 control material 3 fiber connecting part of control material 4 fiber 5 mesh of control material

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 FI 技術表示箇所 // C09K 3/10 C09K 3/10 Z C09K 103:00 107:00 ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 6 Identification code Office reference number FI technical display location // C09K 3/10 C09K 3/10 Z C09K 103: 00 107: 00

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 水膨潤性を有する粘土鉱物を含んでなる
水膨潤性可塑性材に、縦方向には伸びず、横方向には展
開する調節材を複合してなることを特徴とする止水材。
1. A water-stopping composition comprising a water-swelling plastic material containing a clay mineral having water-swelling property, and a control material which does not expand in the longitudinal direction but expands in the lateral direction. Material.
【請求項2】 調節材が網状体である請求項1記載の止
水材。
2. The water blocking material according to claim 1, wherein the adjusting material is a mesh.
【請求項3】 止水材がコンクリート打ち継ぎ目用であ
る請求項1又は2記載の止水材。
3. The waterproof material according to claim 1 or 2, wherein the waterproof material is for a concrete pour joint.
JP8029697A 1996-02-16 1996-02-16 Water cut-off material Pending JPH09221842A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8029697A JPH09221842A (en) 1996-02-16 1996-02-16 Water cut-off material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8029697A JPH09221842A (en) 1996-02-16 1996-02-16 Water cut-off material

Publications (1)

Publication Number Publication Date
JPH09221842A true JPH09221842A (en) 1997-08-26

Family

ID=12283311

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8029697A Pending JPH09221842A (en) 1996-02-16 1996-02-16 Water cut-off material

Country Status (1)

Country Link
JP (1) JPH09221842A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100319658B1 (en) * 1999-03-23 2002-01-09 이근희 A bundle of pipes cable for concrete construction and construction method for grouting to the jointing portion of concrete structures by using the same
CN106800396A (en) * 2016-12-23 2017-06-06 沈阳巍图农业科技有限公司 A kind of water-swellable sealing material and its construction technique

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63130810A (en) * 1986-11-19 1988-06-03 Houjiyun Kogyo Kk Water stopper
JPH0466210U (en) * 1990-10-23 1992-06-10
JPH051275A (en) * 1991-06-26 1993-01-08 Nippon Seal Pack:Kk Composite sealant
JPH05131595A (en) * 1991-11-13 1993-05-28 Bando Chem Ind Ltd Water-swelling anisotropic elastomer molding
JPH0575305U (en) * 1991-04-19 1993-10-15 早川ゴム株式会社 Water stop structure

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63130810A (en) * 1986-11-19 1988-06-03 Houjiyun Kogyo Kk Water stopper
JPH0466210U (en) * 1990-10-23 1992-06-10
JPH0575305U (en) * 1991-04-19 1993-10-15 早川ゴム株式会社 Water stop structure
JPH051275A (en) * 1991-06-26 1993-01-08 Nippon Seal Pack:Kk Composite sealant
JPH05131595A (en) * 1991-11-13 1993-05-28 Bando Chem Ind Ltd Water-swelling anisotropic elastomer molding

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100319658B1 (en) * 1999-03-23 2002-01-09 이근희 A bundle of pipes cable for concrete construction and construction method for grouting to the jointing portion of concrete structures by using the same
CN106800396A (en) * 2016-12-23 2017-06-06 沈阳巍图农业科技有限公司 A kind of water-swellable sealing material and its construction technique

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