JP3837054B2

JP3837054B2 - EXPANSION MATERIAL MIXING APPARATUS, EXPANDING MATERIAL MIXING METHOD, AND EXPANSION MATERIAL INJECTION METHOD

Info

Publication number: JP3837054B2
Application number: JP2001326690A
Authority: JP
Inventors: 正継米村
Original assignee: Yamax Corp
Current assignee: Yamax Corp
Priority date: 2001-10-24
Filing date: 2001-10-24
Publication date: 2006-10-25
Anticipated expiration: 2021-10-24
Also published as: JP2003129563A

Description

【０００１】
【発明の属する技術分野】
本発明は膨張継手に使用する膨張材の混合装置並びに膨張材の混合方法、および膨張材の注入方法に関し、土木や建築における例えば現場打ちの鉄筋コンクリートやコンクリート二次製品の接合端に埋設される鉄筋等の被締着物を膨張材の膨張により生ずるプレストレスおよびプレスにより定着させる膨張継手の膨張材を迅速かつ確実に混合させ、また固定容器内部への注入を円滑かつ確実に行うものである。
【０００２】
【従来の技術】
従来、鉄筋コンクリート構造物においてコンクリート内部に配筋される鉄筋相互を接合するための継手工法には、例えば鉄筋相互の端部を溶接等で接合する継手がある。またほかの工法として鉄筋の端部に形成される重ね部分に金属線条材を捲回して結着する重ね継ぎの工法があった。
また別の継手工法として鉄筋の接合端にねじ部を設けて接合するねじ加工継手がある。さらにほかの工法として充填されるモルタルの付着強度によって鉄筋相互を接合するモルタル継手工法等がある。
【０００３】
【発明が解決しようとする課題】
溶接によって鉄筋相互を接合するための上記従来の継手工法は、施工現場での鉄筋相互の溶接作業に多くの時間および労力が必要になり、また溶接には専門的な溶接技術が必要であり、作業が非能率的であった。また、対向する鉄筋相互の重ね合わせ部分に金属線条材を捲回する重ね継ぎ工法も、金属線条材を鉄筋の端部の重ね合わせ部分に捲回するものであるので、多くの時間と労作とを必要とするものであった。また鉄筋の接合端にねじ部を設けて接合するねじ加工継手は、同様に鉄筋にねじを加工したり、鉄筋相互を接合するのに多くの時間および労力が必要になり、作業は非能率的であった。
さらにモルタル継手工法は、鉄筋とコンクリートとの付着力だけに依存して鉄筋相互を定着するものなので、鉄筋相互の定着長さを十分に採らなければならなかった。しかもモルタル継手工法は、組成材料の配合や練り混ぜの如何によって鉄筋に対するモルタルの付着力を発現するものであるので、現場での施工を行うためには数種の組成原料を計量するための秤、また計量後の組成原料を均一に練り混ぜるための運搬性を有する電動式のハンドミキサー、該ハンドミキサーのモータを駆動するための電源等の設備を用意しなければならないとともに作業者の眼を保護するための防塵眼鏡等の保護具を必要とする等の多くの設備および用具が必要であった。しかも上記モルタル継手工法は、モルタルの組成原料の計量工程、組成原料の練り混ぜ工程、さらにはモルタルの充填工程等の多くの工程からなるので、施工には多くの時間と労力が必要になり、そのうえ施工後には設備や用具を掃除したり、保守について多大な労力、費用がかかっていた。また、例えばコンクリート二次製品の鉄筋相互を接合する場合に、コンクリート二次製品相互の接合端相互を接合してからではないと、定着材として練り混ぜ後のモルタルを計量時や練り混ぜ時とは異なる個別の注入用具に移し変えなければ接合個所に充填することができないとともにコンクリート二次製品の外部からモルタルの充填状態を作業者が目視によって確認することはできなかった。
【０００４】
本発明は上記従来の欠点を解決し、施工現場において何らの設備用具を要することなく必要時に格別な資格・技能を有しない者でも簡単な取扱い操作により膨張性を有する充填材と水等の液体とを迅速かつ確実に混合して水和反応により膨張性を十分に発揮させることにより短時間にて多大な労力を要さずに作業能率が良く固定容器内に挿入されて相対する鉄筋等の被締結材を大きな付着強度にて接合できるとともに構造堅牢に被締結材相互の接合が行えて最適な継手性能が発揮され、また装置自体がコンパクトにして運搬および保管が容易であり、しかも経時にわたり充填材等の品質を変化することなく一定に維持し、さらには構造簡単にして製作が容易で製作費および資材費を安価に提供できる膨張継手に使用する膨張材の混合装置並びに膨張材の混合方法、および膨張材の注入方法を提供しようとする。
【０００５】
【課題を解決するための手段】
本発明は上記課題に鑑みなされたものであり、請求項１に記載の発明は、打込コンリートまたはコンクリート二次製品の接合端に埋設され、剛性材により中空状に形成された固定容器と、該固定容器の適宜側面を封止する封止手段を介して固定容器内に充填され、該封止手段を介して固定容器内に挿入されて相対する被締結材を膨張するプレストレスおよびプレスにより定着させる膨張継手に使用する膨張材の混合装置において、柔軟性を有する耐アルカリ材料により周囲が閉鎖された容積可変形の袋状に形成され、水和反応により膨張性を発揮する充填材が収容される主容器と、強制的に外部より破壊可能な柔軟性を有する耐アルカリ材料により前記主容器内に個別に隣接して設けられ、前記水等の液体を収容する周囲が閉鎖された容積可変形の袋状に形成される添容器とから成り、前記主容器の上部一側には前記封止手段に設けられる充填孔を通じて固定容器内に挿入可能であり、充填材が充填される注入管が一体に設けられ、前記固定容器の肉厚が３〜１５ｍｍに形成され、該固定容器に挿入される前記被締結材の径が１９〜３２ｍｍである時に、前記充填材が６２〜１９５ｃｃであり、水の体積が４９〜１５３ｃｃの所定の充填量により前記主容器内において混合され、前記固定容器内に充填収容される充填材の膨張により生ずるプレストレスまたはプレスにより前記被締結材を定着することを特徴とした。
【０００６】
また本発明の請求項２に記載の発明は、請求項１において前記主容器はポリエチレン樹脂、ポリエチレンテレフタレート樹脂、ポリスチレン樹脂、ポリプロピレン樹脂、ポリアミド樹脂、アクリル樹脂、ポリ塩化ビニール樹脂、またはポリ酢酸ビニール樹脂等の柔軟性を有する耐アルカリ性の合成樹脂可塑物、ゴム、金属箔、もしくはこれらの２種または３種の材料よりなる複数層の何れかにより形成されることを特徴とする。
【０００７】
また本発明の請求項３に記載の発明は、請求項１、または２において、前記添容器は合成樹脂軟質ビニール、ゴム、金属箔、もしくはこれらの２種または３種の材料よりなる複数層の何れかにより形成されることを特徴とする。
【０００８】
また、本発明の請求項４に記載の発明は、請求項１、２、３の何れかにおいて、充填材は酸化カルシウムを主成分として約８０．０〜８４．０重量％、強熱減量を約１．０〜２．０重量％、二酸化珪素を約８．０〜９．０重量％、酸化アルミニウムを約２．０〜２．３重量％、三酸化硫黄を約４．０〜４．５重量％含み、充填材に混合する水が４９〜１５３ｃｃであることを特徴とする。
【０００９】
また、本発明の請求項５に記載の発明は、請求項１、２、３、４の何れかにおいて、前記被締結材は鉄筋、炭素繊維、金属繊維、ガラス繊維、または合成樹脂繊維等の収束材の何れかであることを特徴とする。
【００１０】
また、本発明の請求項６に記載の発明は、打込コンリートまたはコンクリート二次製品の接合端に埋設され、剛性材により中空状に形成された固定容器と、該固定容器の適宜側面を封止する封止手段を介して固定容器内に充填され、該封止手段を介して固定容器内に挿入されて相対する被締結材を膨張するプレストレスおよびプレスにより定着させる膨張継手に使用する膨張材の混合方法であり、前記固定容器の肉厚が３〜１５ｍｍに形成され、該固定容器に挿入される前記被締結材の径が１９〜３２ｍｍである時に、柔軟性を有する耐アルカリ材料によりなる袋状の主容器内に収納された所定の充填量としての６２〜１９５ｃｃの膨張性を有する充填材と、前記主容器に対し仕切壁を介して隣接して個別に設けた袋状の添容器内に収容された４９〜１５３ｃｃの体積の水等の液体との何れかを、強制的に前記添容器の仕切壁を外部より破壊することにより主容器内において混合し、水和反応させて前記固定容器内に充填収容される充填材の膨張により生ずるプレストレスまたはプレス圧により前記被締結材を定着することを特徴とする。
【００１１】
また、本発明の請求項７に記載の発明は、請求項６において、前記充填材と水等の液体とを混合してから主容器をシェイクすることにより水和反応を促進させて膨張性を得ることを特徴とする。
【００１２】
また、本発明の請求項８に記載の発明は、打込コンリートまたはコンクリート二次製品の接合端に埋設され、剛性材により中空状に形成された固定容器と、該固定容器の適宜側面を封止する封止手段を介して固定容器内に充填され、該封止手段を介して固定容器内に挿入されて相対する被締結材を膨張するプレストレスおよびプレスにより定着させる膨張継手に使用する膨張材の注入方法であり、前記固定容器の肉厚が３〜１５ｍｍに形成され、該固定容器に挿入される前記被締結材の径が１９〜３２ｍｍである時に、柔軟性を有する耐アルカリ材料によりなる袋状の主容器内に収納された所定の充填量としての６２〜１９５ｃｃの膨張性を有する充填材と、前記主容器に対し仕切壁を介して隣接して個別に設けた袋状の添容器内に収容された４９〜１５３ｃｃの体積の水等の液体との何れかを、強制的に前記添容器の仕切壁を外部より破壊することにより主容器内において混合し、水和反応させて膨張性を発揮させた膨張材を、前記主容器の上部一側に一体に設けて前記封止手段の充填孔から前記固定容器内に挿入させた注出管を通じて相対する被締結材に対して注入させることを特徴とする。
【００１６】
【発明の実施の形態】
以下、本発明の実施の形態の具体例を図面を参照して説明する。
図１乃至図１５に従って本発明の膨張継手に使用する膨張材の混合装置の第１実施形態を説明する。
図４においてＴは本実施形態の膨張継手であり、この膨張継手Ｔの詳細を以下述べる。
１は膨張継手Ｔを形成する固定容器であり、この固定容器１は剛性材により中空状に形成され封止手段２，２を適宜側面、図４では例えば二方を開口した直管状のスリーブとして形成される。また、この固定容器１は打込コンクリートＫまたはコンクリート二次製品Ｋ′の接合端３，３に埋設される。また固定容器１は、例えば鋼材により形成され、その直径φ₁は約３０〜８０ｍｍ、肉厚ｔは約３〜１５ｍｍに形成される。
【００１７】
４は前記固定容器１内に封止手段２を介して充填収容される膨張性の充填材（膨張材）であり、この充填材４が膨張するプレストレスおよびプレスにより前記封止手段２，２を介して固定容器１内に相対して挿入される被締結材としての鉄筋５，５の端部５ａ，５ａ相互を定着するようになっている。
この充填材４は後記混合装置Ｐにより混合され、混合後に固定容器１内に注入される。
【００１８】
Ｐは混合装置であり、この混合装置Ｐは柔軟性を有する耐アルカリ材料により周囲が閉鎖された容積可変形容器として袋状に形成される主容器６と、主容器６内に個別に隣接して設けられ強制的に外部より破壊可能な耐アルカリ材料により形成される周囲が閉鎖された容積可変形（この明細書において容積可変形とは外部からの加圧力を加えた際に加圧による変形により内容積が形態変化することをいう）の袋状の添容器７とにより形成される。そして、この混合装置Ｐは、前記充填材４と、この充填材４に混入される所定量の水Ｗとが前記主容器６と添容器７とに個別にしかも主容器６内に一緒に収容された状態で例えば通常時には主容器６毎倉庫等に多量に保管されているが、必要時には例えば主容器６毎必要個数を施工現場まで運搬することにより個別に主容器６と添容器７とに収容されている充填材４と水Ｗとを施工現場において混入して水和反応により膨張性を発揮するようになっている。
【００１９】
また図示する実施形態では、充填材４が主容器６内に収容されるとともに添容器７には水Ｗが収容されているが、添容器７の仕切材７ａ（図３では外容器６の外側が添容器７との仕切材７ａを兼ねている）を強制的に外部から破壊し水Ｗを充填材４に対して加え、水Ｗと充填材４とを必要時に迅速かつ円滑に混合して水和反応させるようになっている。しかし、これは代表的な例示であり、主容器６内に水Ｗが収容されるとともに添容器７内には充填材４を収容させることにより、必要時に充填材４と水Ｗとを混合させ、水和反応させて充填材４に膨張性を発揮させることもできる。
【００２０】
前記主容器６は、自由端８ａが閉鎖された注入管８を適宜外側、例えば図１および図３では上部に設け、しかも上下左右の周囲が閉鎖された容積可変形の偏平な袋状に形成される。そして、この主容器６の上方は充填材４と水Ｗとを混合後に充填材４の膨張圧により迅速かつ確実に注出し、必要時に加圧力を加えることにより充填材４を注出し易くするために先窄まりの注出部６ａを上部に形成している。そして、この注出部６ａは、通常時、例えば倉庫に保管したり、施工現場まで運搬する運搬時には例えば図２に示すように２点鎖線で示す折線Ｉを介して注入管８と一緒に下方へ折畳んで重ね合わせることにより粘着テ−プを用いたり、または接着剤を介して取外し可能に固定され、また使用時には図１に示すように注入管８と一緒に折り畳み状態から展開可能に形成される。また主容器６は柔軟性を有する耐アルカリ材料としての例えばポリエチレン樹脂、ポリエチレンテレフタレート樹脂、ポリスチレン樹脂、ポリプロピレン樹脂、ポリアミド樹脂、アクリル樹脂、ポリ塩化ビニール樹脂、またはポリ酢酸ビニール樹脂の何れかの合成樹脂、ゴム、アルミニウム等の金属箔、もしくは２種または３種の材料よりなる複数層の何れかにより形成される。このような成形材料により主容器６を形成するのは、成形材料としての入手が容易であり、資材費が安価になることと、充填材４と水Ｗとの混合後に固定容器１内に膨張材として充填材４を注入する際に主容器６に充填材４の膨張圧に応じて外力を加えて押圧変形させることにより充填材４を迅速かつ確実に注入するのに便利であり、用済後のリサイクルや廃棄を行うのも可能であるからである。しかも、主容器６は前述の合成樹脂により形成させる場合には、主容器１の外部から内部の充填材４と水Ｗとの混合状態を確認するために、透明なものを用いて形成するのが好適である。
【００２１】
また、前記添容器７は柔軟性を有する耐アルカリ材料としての合成樹脂軟質ビニール、ゴム、アルミニウム等の金属箔、もしくはこれらの２種または３種の材料により形成される複数層により上下左右が閉鎖された袋状に形成され、前述のように仕切壁７ａを介して前記主容器６とは個別に隣接して設けられる。仕切壁７ａは外部から主容器６に外力、例えば掌で叩く等して加圧した際に、仕切壁７ａが確実に破壊され易くするために、予め破断用の切込みや薄肉部を設けてもよい。
【００２２】
また本実施形態で使用される充填材４は、水Ｗが必要時に混合されると、水和反応により膨張性を発揮するように数種の粉末状の組成原料が所定組成にて予め混合された状態で主容器６内に収納される。
この充填材４の組成は、例えば酸化カルシウムを膨張に供する主成分として約８０．０〜８４．０重量％含み、全重量の８割強の大部分を占めるほか、強熱減量を約１．０〜２．０重量％、混和材として二酸化珪素を約８．０〜９．０重量％、酸化カルシウムに対する膨張補助剤として酸化アルミニウムを約２．０〜２．３重量％含む。このように、本実施態形態で使用される充填材４は、酸化カルシウムを約８０．０〜８４．０重量％含むので、約２．０〜２．３重量％の酸化アルミニウムの補助によって迅速かつ円滑に水和反応を促進させ、短時間にして迅速かつ確実に固定容器１内で膨張して相対して固定容器１内に挿入される鉄筋５，５を固定でき、酸化アルミニウムの空隙充填作用により、充填材４は高密実化、高強度化、高圧縮化されて構造堅牢に鉄筋５，５で定着することができる。
【００２３】
また図４に示すように固定容器１の二方に設けた開口部１ａ，１ａを閉塞するための封止手段２，２は、開口部１ａ，１ａに嵌着される合成樹脂製のキャップ材１０が使用される。このキャップ材１０は例えば正面円形をなし適宜個数、図７に示すように４個の切込み１０ａが放射状に設けられることにより、この切込み１０ａにより数個、例えば４個に区分される区分片１０ｂを通じて鉄筋５，５の端部５ａ，５ａを固定容器１内に外部から押込むようにしている。また、切込み１０ａの外周には充填材４を固定容器１内に充填するための充填孔１０ｃが開設されている。この充填孔１０ｃの孔径φ、形状、設置個数は適当なものが選定される。なお、キャップ材１０は、図７に示すように実施形態では充填孔１０ｃを有し、放射状に４個の切込み１０ａを設けたことにより４個の区分片１０ｂに分割するようにして被締着物としての鉄筋５を固定容器１内に挿入するようにしているが、図示するものに限ることなく例えば同心円的に切り込み線を設けることにより破断可能になしてもよいし、図８および図９に示すように鉄筋５を挿入するための挿入孔１０ｄを有する略環状のキャップ材１０の裏面に鉄筋５の外周に弾性的に圧接される止水弁板１０ｅを設けたことにより、この止水弁板１０ｅの止水機能により充填孔１０ｃから固定容器１内に充填される充填材４が外部に漏れ出すのを防止するようになっている。
【００２４】
本発明の混合装置Ｐの第１実施形態は以上の構成からなり、粉末状をなし数種の組成原料が所定組成にて予め混合された充填材４と、この充填材４と混合されることにより水和反応を発揮させる所定量の水Ｗとは、不必要時には混合装置Ｐの柔軟性を有する耐アルカリ材料により上下左右が閉鎖されるように形成される袋状の主容器６と、この主容器６内に隣接して個別に設けられた添容器７とにそれぞれ収納される。しかも主容器６は柔軟性を有し、耐アルカリ材料としての例えばポリエチレン樹脂、ポリエチレンテレフタレート樹脂、ポリスチレン樹脂、ポリプロピレン樹脂、ポリアミド樹脂、アクリル樹脂、ポリ塩化ビニール樹脂、またはポリ酢酸ビニール樹脂の何れかの合成樹脂、ゴム、アルミニウム等の金属箔、もしくはこれらの２種または３種の材料よりなる複数層の何れかにより上下左右の周囲が閉鎖される偏平な袋状に形成される。しかもこの主容器６に隣接して個別に袋状に形成される添容器７は柔軟性を有する耐アルカリ性の合成樹脂軟質ビニール、ゴム、アルミニウム等の金属箔、もしくはこれらの２種または３種の材料により形成される複数層により形成されるので、充填材４と水Ｗとの品質が湿気、湿度、天候に影響されずに経時に変化することなく品質を一定に維持した状態で倉庫等に積み重ねることによりコンパクト化されて保管されている。
【００２５】
そして、施工現場において打設される打込コンクリートＫまたは工場において成形されたコンクリート二次製品Ｋ′に埋設される鉄筋５，５の端部５ａ，５ａ相互を接合する場合等の必要時には前述のように、充填材４を主容器６内に収納するとともに水Ｗを添容器７内に個別に収納した状態で直ちに主容器６毎添容器７を一緒に施工現場まで運搬し、使用に供する。
【００２６】
こうして、図４に示すように例えば打込コンクリートＫまたはコンクリート二次製品Ｋ′の接合端３，３の何れかに埋設される相対する被締結部材としての鉄筋５，５の端部５ａ，５ａを接合するには事前に先ず混合装置Ｐ内に収納されている充填材４と水Ｗとを混合する。
充填材４と水Ｗとを混合するには、先ず混合装置Ｐの主容器６を掌で叩く等して加圧すると、主容器６に隣接して設けた添容器７の仕切壁７ａは加圧力により強制的に外部から破壊され、添容器７内に収納されている所定量の水Ｗは主容器６内に収納されている充填材４に混合される。
【００２７】
この際、主容器６を添容器７と一緒に上下左右に素早く数十秒間振ってシェイクするか、しかも必要時には主容器６を手で揉むんで加圧力を加えると、図示する本実施態形態のように、主容器６内に収納された粉末状の充填材４と、主容器６に隣接して設けられた添容器７内に収納された水Ｗとは万遍なく均一に混合されるため、粉末状の充填材４が集結して大きな固まりを生ずることなく混合が迅速かつ速やかに行われる。しかし図には示さないが、充填材４を添容器７内に収納するとともに水Ｗを主容器６内に個別に収納することにより、添容器７の仕切壁７ａを破壊させて充填材４を水Ｗに対して混合させ、水和による膨張性を効率的に発揮することもできる。
【００２８】
このようにして主容器６内において充填材４と水Ｗとの混和操作を行った後に、図２に示すように主容器６の上方に設けられ下方へ折畳まれていた先窄まりの注出部６ａを粘着テ−プを取外したり、接着剤による接着部から強制的に剥離して取外す（図１参照）。そして、注入管８の閉鎖端８ａを鋏を用いて破断して開口してから封止手段２，２を設ける充填孔１０ｃ内に注入管８を挿入すると、水和反応を起こしつつある充填材４は膨張圧により固定容器１内に注入される。
この時、図１２に示すようにコンクリート二次製品Ｋ′が垂直方向Ｙに設置されるかまたは現場打ちされる打込コンクリートＫ，Ｋの締結部材としての鉄筋５，５相互を接合させるには、一方のコンクリート二次製品Ｋ′または一方の打込コンクリートＫに埋設されている固定容器１の側面を閉止する封止手段２がコンクリート二次製品Ｋ′または打込コンクリートＫの側面に露呈する場合には、主容器６に設けた注出管８を封止手段２の充填孔１０ｃ内に差し込むと、前述のように充填材４と水Ｗとの水和反応による膨張圧により充填材４を固定容器１内に充填することができるが、必要な場合には混合装置Ｐの主容器６を柔軟性に抗して加圧して押圧、変形すれば、充填材４を先窄まりの注出部６ａ、注入管８を通じて最後の分量まで確実に封止手段２を介して固定容器１内に注入し、充填できる。こうして、充填材４が既に充填される固定容器１を埋設している一方のコンクリート二次製品Ｋ′または打込コンクリートＫに対して接合すべき他方のコンクリート二次製品Ｋ′または打込コンクリートＫを近接して他方の締結部材としての鉄筋５の接合端５ａを封止手段２を介して固定容器１内に挿入することにより、固定容器１内に既に挿入されている鉄筋５の接合端５ａと相対させれば、締結部材としての鉄筋５，５相互の接合することができる。
【００２９】
そして、固定容器１内において充填材４が水和反応により膨張されることにより例えば図１０に示すように固定容器１の略中心Ｏから外周側に向かって膨張圧による圧力Ｐ₁が発生するので、固定容器１には周方向に向かってひずみωを生ずることになる。この時、鋼材により形成される固定容器１の肉厚ｔを極厚に形成する場合には、充填材４の膨張圧により固定容器１のひずみωは小さくなる。また、固定容器１の肉厚ｔをさらに厚く形成する場合には、遂には固定容器１に生ずるひずみωは０値の領域になる。この現象は、充填材４を充填収容する固定容器１の充填材４に対する拘束が大きいために生ずる膨張エネルギーの大部分が、充填材４の内部組織圧密化にエネルギーを消費し、プレス効果（圧密効果）となる。
ところで、固定容器１の肉厚ｔを厚くしてプレス効果により充填材４の大きな膨張圧を得る場合に、固定容器１内に挿入される鉄筋５，５相互間のかぶり厚さを十分に確保して構造堅牢な打込コンクリートＫやコンクリート二次製品Ｋ′を確保するために管状の固定容器１の直径φ₁が細い傾向のものが好ましい。
【００３０】
逆に、固定容器１の肉厚ｔを薄く形成する場合には、充填材４の膨張圧により固定容器１のひずみω′は大きくなる。そして、さらに固定容器１の肉厚ｔを薄く形成すると、固定容器１は剛性が有効に発揮されず不定常になって自在な変形状態になり膨張圧が０値になる領域に到る。この現象は、充填材４の膨張によって生ずる膨張エネルギーの大部分を鋼材により形成される固定容器１のひずみω′を消費させるのに消費され、図１１に示すようにひずみω′に見合う固定容器１の中心Ｏに向かう引張応力が緊張力Ｐ₂として充填材４に働き、プレストレス効果と呼ばれる。このように、剛性材として鋼材により形成される固定容器１の肉厚ｔの厚薄により、プレストレス効果とプレス効果との大きさが相違し、鉄筋５，５相互に対する膨張継手の定着力の大小、すなわち継手性能に大きな影響を与えるものであり、最適な継手性能を得るために本実施態様では固定容器１の肉厚ｔが３〜１５ｍｍに設定されるのが、効率良くプレストレス効果とプレス効果を発揮する領域である。
【００３１】
また固定容器１内に充填される膨張材となる充填材４の容量と水Ｗの体積とからなる充填量は、接合される鉄筋５，５の径の大小に応じて異なるが、例えば鉄筋５，５がＤ１９の場合には充填材４が６２ｃｃ程度、水Ｗが４９ｃｃ程度であり、また鉄筋５，５がＤ２２の場合には充填材４が７６ｃｃ程度、水Ｗが６０ｃｃ程度であり、鉄筋５，５がＤ２５の場合には充填材４が８３ｃｃ程度、水Ｗが６４ｃｃ程度であり、鉄筋５，５がＤ２９の場合には充填材４が１０９ｃｃ程度、水Ｗが８５ｃｃ程度であり、鉄筋５，５がＤ３２の場合には充填材４が１９５ｃｃ程度、また水Ｗが１５３ｃｃ程度である。
【００３２】
そして、本実施形態では、剛性材により形成される固定容器１内に充填収容される充填材４の膨張により生ずるプレストレス効果とプレス効果（圧密効果）とにより鉄筋５，５に対する付着強度が増加されて充填材４によって鉄筋５，５を定着するので、打込コンクリートＫまたはコンクリート二次製品Ｋ′内に配筋される相対する鉄筋５，５を強固に定着することができ、鉄筋５，５の定着長さを短く設計することができる。
【００３３】
また、鉄筋とコンクリートとの付着力に依存する従来のモルタル継手工法では、施工現場での打込コンクリートＫやコンクリート二次製品Ｋ′を形成する材料の配合や練り混ぜの如何によって鉄筋５，５に対して付着力を発現しないという不都合がなく本実施形態の膨張継手は、比較的悪条件の施工下においても剛性材にて形成される固定容器１内に充填収容される充填材４の十分な膨張圧により鉄筋５，５を確実に定着することができ、構造継手として安定的に性能を発揮する。
【００３４】
また上記膨張継手Ｔを採用するコンクリート二次製品Ｋ′の具体例として、例えば図１３に示すような大型のボックスカルバート２０があげられる。
このボックスカルバート２０は、数個の分割構成片２０Ａ，２０Ｂ，２０Ｃ，２０Ｄ，２０Ｅ，２０Ｆ，２０Ｇ，２０Ｈに分割して軽量化と小体積化をはかって工場における製作および保管を容易にするとともに施工現場への運搬性と移動性とを良好にし、そして施工現場に到達後には数個の分割構成片２０Ａ，２０Ｂ，２０Ｃ，２０Ｄ，２０Ｅ，２０Ｆ，２０Ｇ，２０Ｈを簡単且つ確実に組付けるようにして施工性を効率化をはかる。
【００３５】
また図１４および図１５は同様に本発明の膨張継手Ｔを採用したコンクリート二次製品Ｋ′の別な具体例である。
本例では、大型のＬ型擁壁ブロック３０，３０′を数個の分割構成片３０Ａ，３０Ｂ；３０′Ａ，３０′Ｂに分割して軽量化と小体積化をはかって同様に工場における製作および保管を容易にするとともに施工現場への運搬性と移動性とを良好にし、施工現場での施工性を良くするようにしている。
このほか本実施形態の膨張継手Ｔを用いたコンクリート二次製品Ｋ′として図示する上記説明のものに限らず、例えば大型の開溝型水路ブロック、大型のＵ形溝ブロック、共同溝ブロック、マンホール、地下埋込型の貯水槽ブロック、護岸ブロック、護床ブロック、橋桁やその基礎ブロック等があげられる。
【００３６】
上記実施形態では、膨張性を発揮する充填材４と水Ｗとの何れか一方を収容する主容器６と添容器７とは柔軟性を発揮する耐アルカリ材料により容積可変形の袋状に形成したが、容積可変形の容器としては袋状にに限ることなく、例えば箱形に形成されるものであってもよい。
【００３７】
また上記説明では充填材４としては膨張性を発揮する数種の組成原料を混和する場合につき説明しているが、充填材４としては粉末状に使用するのに限ることなく、数種の所定量の組成原料を混合して顆粒状にしたもの、また錠剤や固形状としたものでもよい。また上記説明では充填材４を混合するために水Ｗを用いているが、これに限ることなく水Ｗに必要な薬剤を予め溶かした液体を用いることもある。
【００３８】
上記説明では膨張材の膨張により締結される被締結材として鉄筋５，５を接合する場合を代表的に説明しているが、被締結材はこれに限ることなく炭素繊維、金属繊維、ガラス繊維、合成繊維の何れかの収束材の何れかであってもよい。
【００３９】
【発明の効果】
本発明の請求項１に記載の発明は以上のように、打込コンリートまたはコンクリート二次製品の接合端に埋設され、剛性材により中空状に形成された固定容器と、該固定容器の適宜側面を封止する封止手段を介して固定容器内に充填され、該封止手段を介して固定容器内に挿入される相対する被締結材を膨張するプレストレスおよびプレスにより定着させる膨張継手に使用する膨張材の混合装置において、柔軟性を有する耐アルカリ材料により周囲が閉鎖された容積可変形の袋状に形成され、水和反応により膨張性を発揮する充填材が収容される主容器と、強制的に外部より破壊可能な柔軟性を有する耐アルカリ材料により前記主容器内に個別に隣接して設けられ、前記水等の液体を収容する周囲が閉鎖された容積可変形の袋状に形成される添容器とから成り、前記主容器の上部一側には前記封止手段に設けられる充填孔を通じて固定容器内に挿入可能であり、膨張材が充填される注入管が一体に設けられ、前記固定容器の肉厚が３〜１５ｍｍに形成され、該固定容器に挿入される前記被締結材の径が１９〜３２ｍｍである時に、前記充填材が６２〜１９５ｃｃであり、水の体積が４９〜１５３ｃｃの所定の充填量により前記主容器内において混合され、前記固定容器内に充填収容される充填材の膨張により生ずるプレストレスまたはプレスにより前記被締結材を定着することを特徴とするので、施工現場において何らの設備用具を要することなく必要時に格別な資格・技能を有しない者でも簡単な取扱い操作により膨張性を有する充填材と水等の液体とを迅速かつ確実に混合して水和反応により膨張性を十分に発揮させることにより短時間にて多大な労力を要さずに作業能率が良く鉄筋等の被締結材を大きな付着強度にて接合できて最適な付着強度が発揮されるとともに構造堅牢に被締結材相互の接合が行え、また装置自体コンパクトにして運搬および保管が容易であり、しかも経時にわたり充填材等の品質を変化することなく一定に維持し、さらには構造簡単にして製作が容易で製作費および資材費が安価にできる。
【００４０】
また本発明の請求項２に記載の発明は、前記主容器はポリエチレン樹脂、ポリエチレンテレフタレート樹脂、ポリスチレン樹脂、ポリプロピレン樹脂、ポリアミド樹脂、アクリル樹脂、ポリ塩化ビニール樹脂、またはポリ酢酸ビニール樹脂等の柔軟性を有する耐アルカリ性の合成樹脂可塑物、ゴム、金属箔、もしくはこれらの２種または３種の材料よりなる複数層の何れかにより形成されるので、成形が容易で製作コストおよび資材費は安価になり、またリサイクルが可能であり、廃棄の際の処分も容易である。
【００４１】
また本発明の請求項３に記載の発明は、前記添容器は合成樹脂軟質ビニール、ゴム、金属箔、もしくはこれらの２種または３種の材料よりなる複数層の何れかにより形成されるので、リサイクルが可能であり、廃棄の際の処分も容易である。
【００４２】
また本発明の請求項４に記載の発明は、充填材は酸化カルシウムを主成分として約８０．０〜８４．０重量％、強熱減量を約１．０〜２．０重量％、二酸化珪素を約８．０〜９．０重量％、酸化アルミニウムを約２．０〜２．３重量％、三酸化硫黄を約４．０〜４．５重量％含み、充填材に混合する水が４９〜１５３ｃｃであるので、固定容器内に充填される充填材は施工現場にて混合することにより直ちに酸化アルミニウムが水と反応して迅速かつ確実に膨張し、高密実化、高強度化、高圧縮化され、鉄筋に対する付着力が大きく、安価な膨張材を提供することができる。
【００４３】
また本発明の請求項５に記載の発明は、前記被締結材は鉄筋、炭素繊維、金属繊維、ガラス繊維、または合成樹脂繊維等の収束材の何れかであるので、構造材になりコンクリ−ト二次製品および打込コンクリ−トの強度を向上することができ、資材の入手も容易である。
【００４４】
また本発明の請求項６に記載の発明は、打込コンリートまたはコンクリート二次製品の接合端に埋設され、剛性材により中空状に形成された固定容器と、該固定容器の適宜側面を封止する封止手段を介して固定容器内に充填され、該封止手段を介して固定容器内に挿入される相対する被締結材を膨張するプレストレスおよびプレスにより定着させる膨張継手に使用する膨張材の混合方法であり、前記固定容器の肉厚が３〜１５ｍｍに形成され、該固定容器に挿入される前記被締結材の径が１９〜３２ｍｍである時に、柔軟性を有する耐アルカリ材料によりなる袋状の主容器内に収納された所定の充填量としての６２〜１９５ｃｃの膨張性を有する充填材と、前記主容器に対し仕切壁を介して隣接して個別に設けた袋状の添容器内に収容された４９〜１５３ｃｃの体積の水等の液体との何れかを、強制的に前記添容器の仕切壁を外部より破壊することにより主容器内において混合し、水和反応させて前記固定容器内に充填収容される充填材の膨張により生ずるプレストレスまたはプレスにより前記被締結材を定着するので、施工現場において充填材と水等の液体とを簡単な取扱操作により確実に混合させ、膨張材の膨張圧により短時間にて多大な労力を要さずに作業能率が良く確実に鉄筋等の被締結材を大きな付着強度により接合することができる。
【００４５】
また本発明の請求項７に記載の発明は、前記充填材と水等の液体とを混合してから主容器をシェイクすることにより水和反応を促進させて膨張性を得ることを特徴とするので、充填材の水和反応が迅速かつ円滑に行え、充填材の膨張性を確実に発揮することができる。
【００４６】
また本発明の請求項８に記載の発明は、打込コンリートまたはコンクリート二次製品の接合端に埋設され、剛性材により中空状に形成された固定容器と、該固定容器の適宜側面を封止する封止手段を介して固定容器内に充填され、該封止手段を介して固定容器内に挿入される相対する被締結材を膨張するプレストレスおよびプレスにより定着させる膨張継手に使用する膨張材の注入方法であり、前記固定容器の肉厚が３〜１５ｍｍに形成され、該固定容器に挿入される前記被締結材の径が１９〜３２ｍｍである時に、柔軟性を有する耐アルカリ材料によりなる袋状の主容器内に収納された所定の充填量としての６２〜１９５ｃｃの膨張性を有する充填材と、前記主容器に対し仕切壁を介して隣接して個別に設けた袋状の添容器内に収容された４９〜１５３ｃｃの体積の水等の液体との何れかを、強制的に前記添容器の仕切壁を外部より破壊することにより主容器内において混合し、水和反応させて膨張性を発揮させた膨張材を、前記主容器の上部一側に一体に設けて前記封止手段の充填孔から前記固定容器内に挿入させた注出管を通じて相対する被締結材に対して注入させることを特徴とするので、従来のモルタル継手工法のように、組成原料を軽量するための秤、組成原料を混合するためのハンドミキサー、ハンドミキサーのモータを駆動するための電源等の設備や防塵眼鏡等の保護具のような用具を必要としないで済み、また工程数が簡略化されて多くの時間と労力を要せずに組成原料を混合後簡単な取扱操作により迅速かつ確実に固定容器内に注入することによって被締結部材相互を効率的に、しかも、大きな付着強度にて接合することができる。
【図面の簡単な説明】
【図１】本発明の膨張継手に使用する膨張材の混合装置の第１実施形態を示し、使用状態を示す部分切欠正面図である。
【図２】同じく本実施態様の膨張材の混合装置の不使用状態を示す斜視図である。
【図３】同じく図１のＡ−Ａ矢視断面図である。
【図４】同じく本実施形態の混合装置を用いて混合される充填材を充填される固定容器内に封止手段を介して鉄筋を挿入し、接続した状態を示す断面図である。
【図５】同じく膨張継手の容器本体内に封止手段を介して鉄筋を挿入する状態の拡大断面図である。
【図６】同じく図４のＢ−Ｂ矢視断面図である。
【図７】同じく本実施形態に使用される封止手段の一例を示す拡大正面図である。
【図８】同じく本実施形態に使用される封止手段の他例を示す拡大正面図である。
【図９】同じくこの封止手段により封止された固定容器内に鉄筋を挿入した状態の拡大断面図である。
【図１０】同じく充填材により容器本体の周方向に向かう圧力Ｐ₁の膨張圧が働いてプレス効果を発揮する状態の断面図である。
【図１１】同じく容器本体の膨張応力が緊張力Ｐ₂として充填材に働きプレストレス効果を発揮する状態の断面図である。
【図１２】同じく本実施形態の膨張材の混合装置により膨張材を固定容器内に注入する一使用例を示す斜視図である。
【図１３】同じく本実施形態の混合装置により得られる膨張材を使用した膨張継手により得られる大型のボックスカルバートの断面図である。
【図１４】同じく本実施形態の混合装置により得られる膨張材を使用した膨張継手により得られる大型のＬ型擁壁ブロックの一例を示す断面図である。
【図１５】同じく本実施形態の混合装置により得られる膨張材を使用した膨張継手により得られる大型のＬ型擁壁ブロックの他例を示す断面図である。
【符号の説明】
１固定容器
１ａ開口部
２封止手段
３接合端
４充填材
５鉄筋
５ａ端部
６主容器
７添容器
１０キャップ材
１０ａ切込み
１０ｃ充填孔
Ｋ打込コンクリート
Ｋ′ コンクリート二次製品[0001]
BACKGROUND OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an expansion material mixing apparatus, an expansion material mixing method, and an expansion material injection method used for an expansion joint, and a reinforcing bar embedded in a joint end of, for example, on-site reinforced concrete or a concrete secondary product in civil engineering or construction. For example, the prestress caused by the expansion of the expansion material and the expansion material of the expansion joint that fixes the material to be fastened by pressing are quickly and reliably mixed, and the injection into the fixed container is smoothly and reliably performed.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a joint method for joining reinforcing bars arranged inside concrete in a reinforced concrete structure includes, for example, a joint for joining ends of the reinforcing bars by welding or the like. As another construction method, there is a lap joint construction method in which a metal wire rod is wound and bound to an overlap portion formed at an end portion of a reinforcing bar.
As another joint method, there is a threaded joint in which a threaded portion is provided at a joint end of a reinforcing bar and joined. Further, as another construction method, there is a mortar joint construction method in which reinforcing bars are joined together by the adhesion strength of mortar filled.
[0003]
[Problems to be solved by the invention]
The above-mentioned conventional joint method for joining reinforcing bars by welding requires a lot of time and labor to weld the reinforcing bars to each other on the construction site, and welding requires specialized welding techniques. The work was inefficient. In addition, the lap splicing method in which the metal strip material is wound around the overlapping portions of the opposing reinforcing bars is also a method in which the metal wire rod is wound around the overlapping portion of the end of the reinforcing bar. It required labor and effort. In addition, threaded joints that are provided with a threaded portion at the joint end of the rebar also require a lot of time and effort to machine screws into the rebar and to join the rebars together, which is inefficient. Met.
Furthermore, since the mortar joint construction method relies on the adhesion between the reinforcing bar and concrete to fix the reinforcing bars, it was necessary to take sufficient fixing length between the reinforcing bars. In addition, the mortar joint method expresses the adhesive strength of mortar to the reinforcing bars depending on the composition and mixing of the composition materials. In addition, it is necessary to prepare an electric hand mixer having transportability for uniformly kneading the measured composition raw materials, a power source for driving the motor of the hand mixer, and the like. Many facilities and tools are required, such as requiring protective equipment such as dustproof glasses for protection. Moreover, the mortar joint construction method is composed of many steps such as a mortar composition raw material measurement step, a composition raw material kneading step, and a mortar filling step, and therefore, construction requires a lot of time and labor. In addition, after construction, it took a lot of labor and expense to clean equipment and tools and to maintain. Also, for example, when joining reinforcing steel bars of concrete secondary products, it is not after joining the joint ends of concrete secondary products, and the mortar after kneading as a fixing material is measured and kneaded. It was not possible to fill the joints unless they were transferred to different injection tools, and the operator could not visually check the mortar filling state from the outside of the secondary concrete product.
[0004]
The present invention solves the above-mentioned conventional drawbacks, and even a person who does not have special qualifications / skills at a necessary time without requiring any equipment on the construction site can perform simple handling operations. Has expansibility By quickly and surely mixing the filler and liquid such as water and fully exhibiting expandability by hydration reaction, it can be inserted into a fixed container with good work efficiency in a short time without requiring much labor. The material to be fastened such as rebar With high adhesion strength It can be joined and the structure to be fastened can be fastened together. Optimum joint performance is demonstrated And also the device itself But Compact and easy to transport and store, and maintain the quality of fillers etc. without changing over time, and further, the structure is simple and easy to manufacture. The An object of the present invention is to provide an expansion material mixing apparatus, an expansion material mixing method, and an expansion material injection method used for an expansion joint that can be provided at low cost.
[0005]
[Means for Solving the Problems]
The present invention has been made in view of the above problems, and the invention according to claim 1 is a fixed container embedded in a joint end of a driven concrete or a concrete secondary product and formed in a hollow shape by a rigid material, By prestressing and pressing, which is filled into the fixed container through a sealing means for sealing an appropriate side surface of the fixed container, and is inserted into the fixed container through the sealing means to expand the opposed material to be fastened. In the expansion material mixing device used for the expansion joint to be fixed, the variable volume type whose periphery is closed by a flexible alkali-resistant material In the form of a bag Filler formed and swellable by hydration reaction But Containment Be done Surrounding the main container and the liquid, such as water, provided adjacent to the main container by an alkali-resistant material having flexibility that can be forcibly broken from the outside. But Closed volume deformable Bag shape And the accessory container formed The upper part of the main container can be inserted into the fixed container through a filling hole provided in the sealing means, and an injection tube filled with the filler is integrally provided. When the diameter of the material to be fastened inserted into the fixed container is 19 to 32 mm, the filler is 62 to 195 cc, and the water volume is 49 to 153 cc. The material to be fastened is fixed by prestress or press generated by the expansion of the filling material mixed and contained in the main container by the amount and filled and accommodated in the fixed container. .
[0006]
Further, the invention according to claim 2 of the present invention is that in claim 1, the main container is made of polyethylene resin, polyethylene terephthalate resin, polystyrene resin, polypropylene resin, polyamide resin, acrylic resin, polyvinyl chloride resin, or polyvinyl acetate resin. It is characterized in that it is formed of any one of an alkali-resistant synthetic resin plastic having flexibility such as rubber, metal foil, or a plurality of layers made of these two or three materials.
[0007]
In addition, the invention described in claim 3 of the present invention is that, in claim 1 or 2, the accessory container is made of synthetic resin soft vinyl, rubber, metal foil, or a plurality of layers made of these two or three materials. It is formed by either.
[0008]
The invention according to claim 4 of the present invention is the filler according to any one of claims 1, 2, and 3, wherein the filler is about 80.0-84.0% by weight of calcium oxide as a main component, and the ignition loss is reduced. About 1.0 to 2.0% by weight, silicon dioxide about 8.0 to 9.0% by weight, aluminum oxide about 2.0 to 2.3% by weight, sulfur trioxide about 4.0 to 4. Contains 5% by weight 49 to 153 cc of water mixed in the filler It is characterized by being.
[0009]
Moreover, the invention according to claim 5 of the present invention is any one of claims 1, 2, 3, and 4, wherein the material to be fastened is a reinforcing bar, carbon fiber, metal fiber, glass fiber, or synthetic resin fiber. It is one of the convergence materials.
[0010]
The invention according to claim 6 of the present invention provides The fixed container is filled through a fixed container embedded in the joint end of the driven concrete or concrete secondary product and formed in a hollow shape with a rigid material, and a sealing means for sealing an appropriate side surface of the fixed container. A method of mixing an expansion material used for an expansion joint that is inserted into a fixed container through the sealing means and expands the opposing material to be fastened and fixed by a press, wherein the fixed container has a wall thickness When the diameter of the material to be fastened is 3 to 15 mm and is inserted into the fixed container is 19 to 32 mm, As a predetermined filling amount stored in a bag-shaped main container made of an alkali-resistant material having flexibility 62-195cc It was accommodated in an inflatable filler and a bag-like accessory container provided separately adjacent to the main container via a partition wall. Any of liquids such as water having a volume of 49 to 153 cc, Forcibly destroying the partition wall of the accessory container from the outside, mixing in the main container, and letting it hydrate The material to be fastened is fixed by prestress or press pressure generated by the expansion of the filler filled and accommodated in the fixed container. It is characterized by that.
[0011]
Further, the invention according to claim 7 of the present invention is that in claim 6, the filling material and a liquid such as water are mixed and then the main container is shaken to promote the hydration reaction, thereby expanding the expandability. It is characterized by obtaining.
[0012]
The invention according to claim 8 of the present invention provides The fixed container is filled through a fixed container embedded in the joint end of the driven concrete or concrete secondary product and formed in a hollow shape with a rigid material, and a sealing means for sealing an appropriate side surface of the fixed container. And a method of injecting an expansion material used for an expansion joint that is inserted into the fixed container through the sealing means and expands the opposed material to be fastened and fixed by a press, and the thickness of the fixed container is When the diameter of the material to be fastened is 3 to 15 mm and is inserted into the fixed container is 19 to 32 mm, As a predetermined filling amount stored in a bag-shaped main container made of an alkali-resistant material having flexibility 62-195cc It was accommodated in an inflatable filler and a bag-like accessory container provided separately adjacent to the main container via a partition wall. Any of liquids such as water having a volume of 49 to 153 cc, Forcibly Said Accessory partition wall From outside The expanding material mixed in the main container by breaking and hydrated to exert the expansibility of the main container Filling hole of the sealing means provided integrally on the upper side From Said It is characterized in that it is injected into the opposite material to be fastened through an extraction pipe inserted into the fixed container.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, specific examples of embodiments of the present invention will be described with reference to the drawings.
1st Embodiment of the mixing apparatus of the expansion material used for the expansion joint of this invention is described according to FIG. 1 thru | or FIG.
In FIG. 4, T is the expansion joint of this embodiment, and details of this expansion joint T will be described below.
Reference numeral 1 denotes a fixed container that forms an expansion joint T. The fixed container 1 is formed as a hollow sleeve made of a rigid material and has sealing means 2 and 2 as appropriate as side surfaces, in FIG. It is formed. The fixed container 1 is buried in the joint ends 3 and 3 of the cast concrete K or the concrete secondary product K ′. The fixed container 1 is made of, for example, a steel material and has a diameter φ ₁ Is about 30 to 80 mm, and the wall thickness t is about 3 to 15 mm.
[0017]
Reference numeral 4 denotes an expandable filler (expandable material) that is filled and accommodated in the fixed container 1 via the sealing means 2, and the sealing means 2, 2 is prestressed and pressed by the filler 4 expanding. The ends 5a and 5a of the reinforcing bars 5 and 5 as the members to be fastened inserted relative to each other in the fixed container 1 are fixed.
This filler 4 is mixed by a mixing device P described later, and injected into the fixed container 1 after mixing.
[0018]
P is a mixing device, and the mixing device P is adjacent to the main container 6 formed in a bag shape as a variable volume container whose periphery is closed by a flexible alkali-resistant material, and individually in the main container 6. A variable volume type that is formed of an alkali-resistant material that is forcibly broken from the outside and has a closed periphery (in this specification, the variable volume type is a deformation caused by pressurization when external pressure is applied. The inner volume changes in shape). In this mixing device P, the filler 4 and a predetermined amount of water W mixed in the filler 4 are separately accommodated in the main container 6 and the accessory container 7 together in the main container 6. In a normal state, the main container 6 is stored in a large amount in a warehouse or the like at normal times. However, when necessary, for example, the necessary number of each main container 6 is transported to the construction site to individually separate the main container 6 and the accessory container 7. The accommodated filler 4 and water W are mixed at the construction site, and expandability is exhibited by a hydration reaction.
[0019]
Further, in the illustrated embodiment, the filler 4 is accommodated in the main container 6 and water W is accommodated in the accessory container 7, but the partition material 7 a of the accessory container 7 (in FIG. 3, the outer side of the outer container 6). Is forcibly destroyed from the outside and water W is added to the filler 4, and the water W and the filler 4 are mixed quickly and smoothly when necessary. It is designed to hydrate. However, this is a typical example, and the water W is accommodated in the main container 6 and the filler 4 is accommodated in the accessory container 7 so that the filler 4 and the water W are mixed when necessary. The filler 4 can also exhibit swellability by a hydration reaction.
[0020]
The main container 6 is provided with an injection tube 8 whose free end 8a is closed as appropriate on the outside, for example, in the upper part in FIGS. Is done. Then, above the main container 6, the filler 4 and the water W are mixed and quickly and reliably poured out by the expansion pressure of the filler 4, and the filler 4 is easily poured out by applying a pressure when necessary. The tip portion 6a is formed at the top. And this extraction | pouring part 6a is kept together with the injection pipe 8 via the broken line I shown by a dashed-two dotted line as shown, for example in FIG. It is fixed to the adhesive tape using an adhesive tape by being folded and overlapped, or detachable through an adhesive, and can be unfolded from the folded state together with the injection tube 8 as shown in FIG. Is done. The main container 6 is a synthetic resin such as polyethylene resin, polyethylene terephthalate resin, polystyrene resin, polypropylene resin, polyamide resin, acrylic resin, polyvinyl chloride resin, or polyvinyl acetate resin as a flexible alkali-resistant material. , Rubber, metal foil such as aluminum, or a plurality of layers made of two or three materials. The main container 6 is formed of such a molding material because it is easy to obtain as a molding material, the material cost is low, and the mixture of the filler 4 and water W expands in the fixed container 1. Convenient for quickly and surely injecting the filler 4 by applying external force to the main container 6 according to the expansion pressure of the filler 4 when the filler 4 is injected as a material. This is because it can be recycled and discarded later. Moreover, when the main container 6 is formed of the above-described synthetic resin, it is formed using a transparent material in order to confirm the mixed state of the filler 4 and the water W inside from the outside of the main container 1. Is preferred.
[0021]
Further, the accessory container 7 is closed up and down and left and right by a plurality of layers formed of synthetic resin soft vinyl, rubber, metal foil such as aluminum as a flexible alkali-resistant material, or these two or three kinds of materials. It is formed in a bag shape and is provided adjacent to the main container 6 via the partition wall 7a as described above. When the partition wall 7a is pressed from the outside to the main container 6 by applying external force, for example, with a palm, the partition wall 7a may be preliminarily provided with a notch for breaking or a thin wall portion so that the partition wall 7a is easily destroyed. Good.
[0022]
In addition, the filler 4 used in the present embodiment is prepared by mixing several kinds of powdery composition raw materials in a predetermined composition so that when the water W is mixed when necessary, it exhibits expansibility by a hydration reaction. And stored in the main container 6.
The composition of the filler 4 includes, for example, about 80.0 to 84.0% by weight of calcium oxide as a main component for expansion, occupies most of more than 80% of the total weight, and has a loss on ignition of about 1. 0 to 2.0% by weight, about 8.0 to 9.0% by weight of silicon dioxide as an admixture, and about 2.0 to 2.3% by weight of aluminum oxide as an expansion aid for calcium oxide. Thus, since the filler 4 used in the present embodiment contains about 80.0 to 84.0% by weight of calcium oxide, the filler 4 can be quickly assisted with about 2.0 to 2.3% by weight of aluminum oxide. In addition, the hydration reaction is smoothly promoted, and the reinforcing bars 5 and 5 which are expanded in the fixed container 1 in a short time can be fixed quickly and reliably inserted into the fixed container 1 to be fixed. By the action, the filler 4 can be fixed with the reinforcing bars 5 and 5 with high density, high strength, and high compression so that the structure 4 is solid.
[0023]
Further, as shown in FIG. 4, the sealing means 2 and 2 for closing the openings 1a and 1a provided on the two sides of the fixed container 1 are made of a synthetic resin cap material fitted into the openings 1a and 1a. 10 is used. The cap member 10 has, for example, a front circular shape, and is appropriately arranged. As shown in FIG. 7, four cuts 10a are provided in a radial pattern, so that the piece 10b is divided into several pieces, for example, four pieces by the cuts 10a. The ends 5a and 5a of the reinforcing bars 5 and 5 are pushed into the fixed container 1 from the outside. In addition, a filling hole 10c for filling the filling material 4 into the fixed container 1 is formed on the outer periphery of the cut 10a. Appropriate ones are selected for the hole diameter φ, the shape, and the number of installed holes of the filling hole 10c. In the embodiment, the cap member 10 has a filling hole 10c as shown in FIG. 7, and is provided with four cuts 10a in a radial manner so as to be divided into four segment pieces 10b. Although the reinforcing bar 5 as a kimono is inserted into the fixed container 1, it is not limited to that shown in the figure, and may be made breakable by providing, for example, concentric cut lines, or FIGS. The water stop valve plate 10e elastically pressed against the outer periphery of the reinforcing bar 5 is provided on the back surface of the substantially annular cap member 10 having the insertion hole 10d for inserting the reinforcing bar 5 as shown in FIG. The water blocking function of the valve plate 10e prevents the filler 4 filled in the fixed container 1 from leaking to the outside from the filling hole 10c.
[0024]
1st Embodiment of the mixing apparatus P of this invention consists of the above structures, and is the powder form and several types of composition raw materials are mixed with the filler 4 with which the composition raw material was mixed beforehand by predetermined composition, and this filler 4 is mixed. The predetermined amount of water W that exerts a hydration reaction by means of a bag-like main container 6 that is formed so as to be closed vertically and horizontally by an alkali-resistant material having the flexibility of the mixing device P when not necessary, The main container 6 is housed in a separate container 7 provided adjacent to the main container 6. Moreover, the main container 6 has flexibility, and is any one of an alkali-resistant material such as polyethylene resin, polyethylene terephthalate resin, polystyrene resin, polypropylene resin, polyamide resin, acrylic resin, polyvinyl chloride resin, or polyvinyl acetate resin. It is formed into a flat bag shape whose upper, lower, left and right peripheries are closed by either a synthetic resin, rubber, metal foil such as aluminum, or a plurality of layers made of these two or three materials. In addition, the accessory container 7 formed individually in the form of a bag adjacent to the main container 6 is a flexible alkali-resistant synthetic resin, such as soft vinyl, rubber, metal foil such as aluminum, or two or three of these. Since it is formed of a plurality of layers made of materials, the quality of the filler 4 and the water W is not affected by moisture, humidity, and weather, and does not change over time. It is stored compactly by stacking.
[0025]
And when it is necessary, such as when joining the ends 5a and 5a of the reinforcing bars 5 and 5 embedded in the concrete concrete K 'placed in the construction site or the concrete secondary product K' formed in the factory, As described above, the filler 4 is stored in the main container 6 and the water W is individually stored in the accessory container 7, and the main container 6 and the accessory container 7 are immediately transported together to the construction site for use.
[0026]
Thus, as shown in FIG. 4, for example, ends 5a and 5a of rebars 5 and 5 as opposing members to be fastened embedded in either the joining ends 3 or 3 of the cast concrete K or the concrete secondary product K '. First, the filler 4 accommodated in the mixing device P and the water W are mixed in advance.
In order to mix the filler 4 and the water W, first, the main container 6 of the mixing device P is pressurized with a palm or the like, so that the partition wall 7a of the accessory container 7 provided adjacent to the main container 6 is added. A predetermined amount of water W, which is forcibly destroyed from the outside by pressure and stored in the accessory container 7, is mixed with the filler 4 stored in the main container 6.
[0027]
At this time, if the main container 6 is shaken by shaking it swiftly up and down and left and right together with the accessory container 7 for several tens of seconds, or if necessary, the main container 6 is rubbed by hand and applied pressure is applied. As described above, since the powdery filler 4 stored in the main container 6 and the water W stored in the accessory container 7 provided adjacent to the main container 6 are uniformly mixed. The mixing is performed quickly and promptly without the powdery filler 4 gathering to form a large mass. However, although not shown in the drawing, the filler 4 is accommodated in the accessory container 7 and the water W is individually accommodated in the main container 6, thereby breaking the partition wall 7 a of the accessory container 7 and removing the filler 4. It can also be mixed with water W to efficiently exhibit swellability due to hydration.
[0028]
After performing the mixing operation of the filler 4 and the water W in the main container 6 in this way, as shown in FIG. 2, the constricted note that is provided above the main container 6 and folded downward. The sticking tape is removed from the protruding portion 6a, or the peeling portion 6a is forcibly peeled off from the bonding portion by the adhesive (see FIG. 1). When the injection tube 8 is inserted into the filling hole 10c in which the sealing means 2 and 2 are provided after the closed end 8a of the injection tube 8 is broken and opened using a scissors, the filler is causing a hydration reaction. 4 is injected into the fixed container 1 by expansion pressure.
At this time, as shown in FIG. 12, the rebars 5, 5 as the fastening members of the concrete concrete K, K which is installed in the vertical direction Y or is cast in the field as shown in FIG. The sealing means 2 for closing the side surface of the fixed container 1 embedded in one concrete secondary product K ′ or the one placed concrete K is exposed on the side surface of the concrete secondary product K ′ or the placed concrete K. In this case, when the extraction pipe 8 provided in the main container 6 is inserted into the filling hole 10c of the sealing means 2, the filler 4 is caused by the expansion pressure due to the hydration reaction between the filler 4 and the water W as described above. Can be filled into the fixed container 1, but if necessary, the main container 6 of the mixing device P can be pressed against the flexibility to be pressed and deformed, so that the filler 4 is tapered. Through the outlet 6a and the injection tube 8, the final amount is confirmed. Were injected into the fixed container 1 via a sealing means 2, it can be filled. In this way, the other concrete secondary product K ′ or implantable concrete K to be joined to one concrete secondary product K ′ or implant concrete K in which the fixed container 1 already filled with the filler 4 is embedded. The joint end 5a of the reinforcing bar 5 already inserted in the fixed container 1 is inserted into the fixed container 1 through the sealing means 2 by inserting the joint end 5a of the reinforcing bar 5 as the other fastening member in the vicinity. , The reinforcing bars 5 and 5 as the fastening members can be joined to each other.
[0029]
Then, when the filler 4 is expanded in the fixed container 1 by the hydration reaction, for example, as shown in FIG. 10, the pressure P due to the expansion pressure from the approximate center O of the fixed container 1 toward the outer peripheral side. ₁ Therefore, a strain ω is generated in the fixed container 1 in the circumferential direction. At this time, when the thickness t of the fixed container 1 formed of steel is formed to be extremely thick, the strain ω of the fixed container 1 is reduced by the expansion pressure of the filler 4. When the thickness t of the fixed container 1 is further increased, the strain ω finally generated in the fixed container 1 becomes a zero value region. This phenomenon is caused by the fact that most of the expansion energy generated due to the large constraint on the filler 4 of the fixed container 1 that fills and accommodates the filler 4 consumes energy for the consolidation of the internal structure of the filler 4, and the press effect Effect).
By the way, when the wall thickness t of the fixed container 1 is increased and a large expansion pressure of the filler 4 is obtained by the press effect, the cover thickness between the reinforcing bars 5 and 5 inserted into the fixed container 1 is sufficiently secured. The diameter φ of the tubular fixed container 1 in order to secure the robust cast concrete K and the concrete secondary product K ′ ₁ Those having a tendency to be thin are preferred.
[0030]
On the contrary, when the thickness t of the fixed container 1 is thin, the strain ω ′ of the fixed container 1 increases due to the expansion pressure of the filler 4. If the thickness t of the fixed container 1 is further reduced, the fixed container 1 is not effectively exhibited in rigidity, becomes unsteady and freely deforms, and reaches an area where the expansion pressure becomes zero. This phenomenon is consumed to consume most of the expansion energy generated by the expansion of the filler 4 by the strain ω ′ of the fixed container 1 formed of steel, and the fixed container matches the strain ω ′ as shown in FIG. The tensile stress toward the center O of 1 is the tension P ₂ It acts on the filler 4 as a pre-stress effect. Thus, due to the thickness t of the fixed container 1 formed of a steel material as a rigid material, the magnitude of the prestress effect and the press effect is different, and the fixing force of the expansion joint to the reinforcing bars 5 and 5 is large or small. In other words, in order to obtain the optimum joint performance, the thickness t of the fixed container 1 is set to 3 to 15 mm in order to obtain the optimum joint performance. This is an area where effects are exerted.
[0031]
Further, the filling amount composed of the capacity of the filler 4 serving as the expansion material filled in the fixed container 1 and the volume of the water W varies depending on the size of the diameters of the reinforcing bars 5 and 5 to be joined. , 5 is D19, the filler 4 is about 62 cc and the water W is about 49 cc, and when the reinforcing bars 5 and 5 are D22, the filler 4 is about 76 cc and the water W is about 60 cc. 5 and 5 are D25, the filler 4 is about 83 cc and the water W is about 64 cc, and when the reinforcing bars 5 and 5 are D29, the filler 4 is about 109 cc and the water W is about 85 cc. When 5 and 5 are D32, the filler 4 is about 195 cc and the water W is about 153 cc.
[0032]
And in this embodiment, the adhesion strength with respect to the reinforcing bars 5 and 5 increases by the prestress effect and press effect (consolidation effect) which arise by expansion | swelling of the filler 4 filled and accommodated in the fixed container 1 formed with a rigid material. Since the reinforcing bars 5 and 5 are fixed by the filler 4, the opposing reinforcing bars 5 and 5 arranged in the cast concrete K or the concrete secondary product K ′ can be firmly fixed. The fixing length of 5 can be designed to be short.
[0033]
In the conventional mortar joint method that depends on the adhesion between the reinforcing bar and the concrete, the reinforcing bars 5 and 5 depend on the composition and mixing of the materials that form the cast concrete K and the concrete secondary product K ′ at the construction site. There is no inconvenience that the adhesive force is not expressed, and the expansion joint of the present embodiment is sufficient for the filling material 4 filled and accommodated in the fixed container 1 formed of a rigid material even under relatively adverse conditions of construction. Reinforcing bars 5 and 5 can be reliably fixed by an appropriate expansion pressure, and the performance is stably exhibited as a structural joint.
[0034]
A concrete example of the concrete secondary product K ′ employing the expansion joint T is a large box culvert 20 as shown in FIG.
The box culvert 20 is divided into several divided component pieces 20A, 20B, 20C, 20D, 20E, 20F, 20G, and 20H to reduce the weight and volume, thereby facilitating manufacture and storage in a factory. To improve the transportability and mobility to the construction site, and to assemble several divided components 20A, 20B, 20C, 20D, 20E, 20F, 20G, and 20H easily and reliably after reaching the construction site To improve workability.
[0035]
FIG. 14 and FIG. 15 are other specific examples of the concrete secondary product K ′ similarly adopting the expansion joint T of the present invention.
In this example, a large L-shaped retaining wall block 30, 30 'is divided into several divided component pieces 30A, 30B; 30'A, 30'B to reduce the weight and volume, and similarly in the factory. In addition to facilitating production and storage, the transportability and mobility to the construction site are improved to improve the workability at the construction site.
In addition, the concrete secondary product K ′ using the expansion joint T of the present embodiment is not limited to the above-described description, but includes, for example, a large open-groove channel block, a large U-shaped groove block, a common groove block, and a manhole. , Underground storage tank block, revetment block, revetment block, bridge girder and its foundation block.
[0036]
In the above-described embodiment, the main container 6 and the auxiliary container 7 that house either one of the filler 4 exhibiting expandability or the water W are formed into a variable volume bag shape with an alkali-resistant material that exhibits flexibility. However, the variable volume container is not limited to a bag shape, and may be a box shape, for example.
[0037]
Further, in the above description, the filler 4 is described in the case where several kinds of composition raw materials exhibiting expansibility are mixed. However, the filler 4 is not limited to being used in the form of a powder, but in several places. A fixed amount of composition raw materials may be mixed to form a granule, or a tablet or solid. In the above description, the water W is used to mix the filler 4. However, the present invention is not limited to this, and a liquid in which a chemical necessary for the water W is previously dissolved may be used.
[0038]
In the above description, the case where the reinforcing bars 5 and 5 are joined as the material to be fastened by the expansion of the expansion material is representatively described. However, the material to be fastened is not limited to this, but carbon fiber, metal fiber, glass fiber. Any of the convergence materials of synthetic fibers may be used.
[0039]
【The invention's effect】
As described above, the invention according to claim 1 of the present invention is a fixed container that is embedded in the joint end of a driven concrete or a concrete secondary product and is formed in a hollow shape by a rigid material, and an appropriate side surface of the fixed container. Used in an expansion joint that is filled in a fixed container through a sealing means that seals, and is fixed by a pre-stress and press that inflates an opposite material to be fastened inserted into the fixed container through the sealing means. Variable volume type in which the periphery is closed by a flexible alkali-resistant material In the form of a bag Filler formed and swellable by hydration reaction But Containment Be done Surrounding the main container and the liquid, such as water, provided adjacent to the main container by an alkali-resistant material having flexibility that can be forcibly broken from the outside. But Closed volume deformable Bag shape And the accessory container formed The upper side of the main container can be inserted into the fixed container through a filling hole provided in the sealing means, and an injection tube filled with an expansion material is integrally provided. When the diameter of the material to be fastened inserted into the fixed container is 19 to 32 mm, the filler is 62 to 195 cc, and the water volume is 49 to 153 cc. The material to be fastened is fixed by prestress or press generated by the expansion of the filler that is mixed in the main container by the amount and is filled and accommodated in the fixed container. Therefore, even those who do not have special qualifications / skills when necessary without the need for any equipment on the construction site Has expansibility Fast and reliable mixing of fillers and liquids such as water and sufficient expansion by hydration reaction to improve work efficiency in a short period of time without much labor and fasten rebars Material With high adhesion strength Can join Optimum adhesion strength is demonstrated In addition, the materials to be fastened can be joined to each other in a robust structure, and the equipment itself can be made compact and easy to transport and store, and the quality of the filler can be kept constant without changing over time. Thus, production is easy and production costs and material costs can be reduced.
[0040]
In the invention according to claim 2 of the present invention, the main container is made of a flexible material such as polyethylene resin, polyethylene terephthalate resin, polystyrene resin, polypropylene resin, polyamide resin, acrylic resin, polyvinyl chloride resin, or polyvinyl acetate resin. Since it is formed of any one of alkali-resistant synthetic resin plastics, rubber, metal foil, or a plurality of layers made of these two or three materials, molding is easy and production costs and material costs are low. In addition, it can be recycled and can be easily disposed of at the time of disposal.
[0041]
In the invention according to claim 3 of the present invention, the accessory container is formed of any one of synthetic resin soft vinyl, rubber, metal foil, or a plurality of layers made of these two or three materials. Recyclable and easy to dispose of.
[0042]
In the invention according to claim 4 of the present invention, the filler is mainly about 80.0 to 84.0% by weight of calcium oxide as a main component, the ignition loss is about 1.0 to 2.0% by weight, silicon dioxide. About 8.0 to 9.0 wt%, aluminum oxide about 2.0 to 2.3 wt%, sulfur trioxide about 4.0 to 4.5 wt%, 49 to 153 cc of water mixed in the filler Therefore, when the filler filled in the fixed container is mixed at the construction site, the aluminum oxide immediately reacts with the water and expands quickly and reliably, resulting in high density realization, high strength, high compression, rebar It is possible to provide an inexpensive expansion material that has a large adhesion force to the surface.
[0043]
In the invention according to claim 5 of the present invention, since the material to be fastened is any one of converging materials such as reinforcing bars, carbon fibers, metal fibers, glass fibers, or synthetic resin fibers, it becomes a structural material and is concrete. The strength of the secondary product and the driving concrete can be improved, and the materials can be easily obtained.
[0044]
The invention according to claim 6 of the present invention provides The fixed container is filled through a fixed container embedded in the joint end of the driven concrete or concrete secondary product and formed in a hollow shape with a rigid material, and a sealing means for sealing an appropriate side surface of the fixed container. And a method of mixing expansion material used for an expansion joint for fixing the material to be fastened inserted into the fixed container through the sealing means by prestressing and pressing, wherein the fixed container has a wall thickness. When the diameter of the material to be fastened is 3 to 15 mm and is inserted into the fixed container is 19 to 32 mm, As a predetermined filling amount stored in a bag-shaped main container made of an alkali-resistant material having flexibility 62-195cc It was accommodated in an inflatable filler and a bag-like accessory container provided separately adjacent to the main container via a partition wall. 49-153cc volume of liquid such as water Any of the above is mixed in the main container by forcibly breaking the partition wall of the accessory container from the outside, and allowed to hydrate The material to be fastened is fixed by prestress or press generated by the expansion of the filler filled and accommodated in the fixed container. Therefore, the filler and liquid such as water are reliably mixed at the construction site by a simple handling operation, and the expansion pressure of the expansion material ensures a high work efficiency and a reliable rebar without requiring a lot of labor in a short time. The material to be fastened Due to the large adhesion strength Can be joined.
[0045]
The invention according to claim 7 of the present invention is characterized in that the hydration reaction is promoted by mixing the filler and a liquid such as water and then the main container is shaken to obtain expandability. Therefore, the hydration reaction of the filler can be performed quickly and smoothly, and the expandability of the filler can be reliably exhibited.
[0046]
The invention according to claim 8 of the present invention provides The fixed container is filled through a fixed container embedded in the joint end of the driven concrete or concrete secondary product and formed in a hollow shape with a rigid material, and a sealing means for sealing an appropriate side surface of the fixed container. , A method of injecting an expansion material used for an expansion joint for fixing a material to be fastened inserted into the fixed container through the sealing means by prestressing and pressing, wherein the fixed container has a wall thickness. When the diameter of the material to be fastened is 3 to 15 mm and is inserted into the fixed container is 19 to 32 mm, As a predetermined filling amount stored in a bag-shaped main container made of an alkali-resistant material having flexibility 62-195cc It was accommodated in an inflatable filler and a bag-like accessory container provided separately adjacent to the main container via a partition wall. Any of liquids such as water having a volume of 49 to 153 cc, Forcibly Said Accessory partition wall From outside The expanding material mixed in the main container by breaking and hydrated to exert the expansibility of the main container Filling hole of the sealing means provided integrally on the upper side From Said It is characterized in that it is injected into the material to be fastened through the pouring pipe inserted into the fixed container. Therefore, as in the conventional mortar joint method, a balance for reducing the weight of the composition material and mixing the composition material This eliminates the need for equipment such as a hand mixer, a power source for driving the motor of the hand mixer, and protective equipment such as dust-proof glasses, and the number of processes is simplified and a lot of time and labor is required. The components to be fastened can be efficiently injected into the fixed container quickly and surely by a simple handling operation after mixing the composition raw materials without the need for With high adhesion strength Can be joined.
[Brief description of the drawings]
FIG. 1 is a partially cutaway front view showing a first embodiment of an expansion material mixing device used in an expansion joint of the present invention and showing a use state.
FIG. 2 is a perspective view showing a non-use state of the expansion material mixing apparatus of the present embodiment.
3 is a cross-sectional view taken along arrow AA in FIG.
FIG. 4 is a cross-sectional view showing a state in which reinforcing bars are inserted and connected via a sealing means into a fixed container filled with a filler to be mixed using the mixing apparatus of the present embodiment.
FIG. 5 is an enlarged cross-sectional view showing a state in which a reinforcing bar is inserted into the container body of the expansion joint through a sealing means.
6 is a cross-sectional view taken along the line BB in FIG.
FIG. 7 is an enlarged front view showing an example of the sealing means used in the present embodiment.
FIG. 8 is an enlarged front view showing another example of the sealing means used in the present embodiment.
FIG. 9 is an enlarged cross-sectional view showing a state in which a reinforcing bar is inserted into a fixed container sealed by the sealing means.
FIG. 10 shows the pressure P in the circumferential direction of the container body due to the filler. ₁ It is sectional drawing of the state which exerts the press effect by working the expansion pressure of.
FIG. 11 shows that the expansion stress of the container body is the tension P ₂ It is sectional drawing of the state which works as a filler and exhibits a pre-stress effect.
FIG. 12 is a perspective view showing an example of use in which an expansion material is injected into a fixed container by the expansion material mixing apparatus of the present embodiment.
FIG. 13 is a cross-sectional view of a large box culvert obtained by an expansion joint using the expansion material obtained by the mixing device of the present embodiment.
FIG. 14 is a cross-sectional view showing an example of a large L-shaped retaining wall block obtained by an expansion joint using an expansion material obtained by the mixing device of the present embodiment.
FIG. 15 is a cross-sectional view showing another example of a large L-shaped retaining wall block obtained by an expansion joint using the expansion material obtained by the mixing device of the present embodiment.
[Explanation of symbols]
1 Fixed container
1a opening
2 Sealing means
3 Junction ends
4 Filling material
5 Reinforcing bars
5a end
6 Main container
7 accessory containers
10 Cap material
10a notch
10c Filling hole
K driven concrete
K 'concrete secondary products

Claims

The fixed container is filled through a fixed container embedded in the joint end of the driven concrete or concrete secondary product and formed in a hollow shape with a rigid material, and a sealing means for sealing an appropriate side surface of the fixed container. In the expansion material mixing apparatus used for the expansion joint used for the prestress that is inserted into the fixed container through the sealing means and expands the opposed material to be fastened and fixed by the press, the flexible alkali-resistant material is used. ambient is formed in a bag-like enclosed volume-variable, a main container filler exhibits expandable by hydration reaction is accommodated by alkali resistant material having a breakable more forcibly external flexibility said main container to provided adjacent individually, Ri consists with添容instrument ambient is formed in a bag-like enclosed volume-variable containing a liquid of the water or the like, an upper one side of the main container Before An injection tube that can be inserted into the fixed container through a filling hole provided in the sealing means and is filled with a filler is integrally provided, and the fixed container has a thickness of 3 to 15 mm. When the diameter of the material to be fastened to be inserted is 19 to 32 mm, the filler is 62 to 195 cc, and the volume of water is mixed in the main container with a predetermined filling amount of 49 to 153 cc, and the fixed An expansion material mixing apparatus for use in an expansion joint, wherein the material to be fastened is fixed by prestress or press pressure generated by expansion of a filler filled and accommodated in a container .

The main container is a flexible, alkali-resistant synthetic resin plastic such as polyethylene resin, polyethylene terephthalate resin, polystyrene resin, polypropylene resin, polyamide resin, acrylic resin, polyvinyl chloride resin, or polyvinyl acetate resin, rubber, metal The expansion material mixing device used for the expansion joint according to claim 1, wherein the expansion material is formed of a foil or a plurality of layers made of these two or three materials.

The expansion container according to claim 1, wherein the accessory container is formed of any one of synthetic resin soft vinyl, rubber, metal foil, or a plurality of layers made of these two or three materials. An expansion material mixing device used for joints.

The filler is mainly composed of calcium oxide, about 80.0-84.0% by weight, ignition loss is about 1.0-2.0% by weight, silicon dioxide is about 8.0-9.0% by weight, oxidized. The aluminum according to claim 1, comprising about 2.0 to 2.3% by weight of aluminum, about 4.0 to 4.5% by weight of sulfur trioxide, and 49 to 153 cc of water mixed in the filler . An expansion material mixing device used for the expansion joint according to any one of 2 and 3.

The expansion member according to any one of claims 1, 2, 3, and 4, wherein the material to be fastened is any one of converging materials such as reinforcing steel, carbon fiber, metal fiber, glass fiber, and synthetic resin fiber. An expansion material mixing device used for joints.

The fixed container is filled through a fixed container embedded in the joint end of the driven concrete or concrete secondary product and formed in a hollow shape with a rigid material, and a sealing means for sealing an appropriate side surface of the fixed container. A method of mixing an expansion material used for an expansion joint that is inserted into a fixed container through the sealing means and expands the opposing material to be fastened and fixed by a press, wherein the fixed container has a wall thickness A predetermined filling housed in a bag-shaped main container made of an alkali-resistant material having flexibility when the diameter of the material to be fastened to be inserted into the fixed container is 19 to 32 mm. A filler having an expansibility of 62 to 195 cc as a quantity, and water having a volume of 49 to 153 cc accommodated in a bag-like accessory container individually provided adjacent to the main container via a partition wall, etc. and liquid One, mixing in the main vessel by breaking externally forced to the添容unit partition walls, prestressed or caused by the expansion of the filler by hydration reaction is filled accommodated in said stationary vessel A method for mixing an expansion material used for an expansion joint, wherein the material to be fastened is fixed by pressing .

The expansion material used for the expansion joint according to claim 6, wherein the expansion material is obtained by mixing the filler and a liquid such as water and then shaking the main container to promote a hydration reaction. Mixing method.

The fixed container is filled through a fixed container embedded in the joint end of the driven concrete or concrete secondary product and formed in a hollow shape with a rigid material, and a sealing means for sealing an appropriate side surface of the fixed container. a method of injecting expandable material to be used for expansion joints to fix the prestressing and pressed to inflate the opposing object conclude member is inserted into the fixed container via the sealing means, the thickness of the fixed container Is formed in a length of 3 to 15 mm, and when the diameter of the material to be fastened inserted into the fixed container is 19 to 32 mm, a predetermined container housed in a bag-shaped main container made of a flexible alkali-resistant material is used. A filling material having an expansibility of 62 to 195 cc as a filling amount, and a volume of water of 49 to 153 cc accommodated in a bag-like accessory container provided individually adjacent to the main container via a partition wall Etc. with liquid One, to force the said添容device of the partition wall by mixing in the main vessel by breaking from the outside, an expansion member which has exerted an inflatable by hydration reaction, the upper one side of the main container injection method of expanding material to be used for expansion joints, characterized in that to inject against opposite fastened material through Note decane was inserted into the fixed container from the filling hole of the sealing means integrally provided.