JPH0441867A - Grouting method into sheath - Google Patents
Grouting method into sheathInfo
- Publication number
- JPH0441867A JPH0441867A JP14746390A JP14746390A JPH0441867A JP H0441867 A JPH0441867 A JP H0441867A JP 14746390 A JP14746390 A JP 14746390A JP 14746390 A JP14746390 A JP 14746390A JP H0441867 A JPH0441867 A JP H0441867A
- Authority
- JP
- Japan
- Prior art keywords
- sheath
- grout
- grout material
- suction pump
- air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 8
- 239000011440 grout Substances 0.000 claims abstract description 53
- 239000000463 material Substances 0.000 claims abstract description 28
- 238000002347 injection Methods 0.000 claims abstract description 6
- 239000007924 injection Substances 0.000 claims abstract description 6
- 229910000831 Steel Inorganic materials 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 3
- 239000010959 steel Substances 0.000 abstract description 3
- 230000003213 activating effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Reinforcement Elements For Buildings (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明はプレストレス工法が通用される梁等の水平部材
に埋設されたシース内のグラウト注入方法に係るもので
ある。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method for injecting grout into a sheath embedded in a horizontal member such as a beam, to which a prestressing method is applied.
（従来の技術）
従来、プレストレス工法が適用され、る梁等の水平部材
において、プレストレス導入剤ＰＣ鋼材の緊張後、同ｐ
ｃ鋼材が挿貫されたシース内にグラウト材を充填する際
、同シースの一端部グラウド注入口からポンプを用いて
グラウト材を圧送し、前記シースの中間部及び他端部に
設けたグラウト排出孔によって内部エアーの排出及びグ
ラウト材充填状態を確認しなからシース内のグラウト注
入、充填を行っていた。(Prior art) Conventionally, in horizontal members such as beams to which the prestressing method has been applied, the same p.
c When filling grout into the sheath into which the steel material has been inserted, the grout is pumped from the grout injection port at one end of the sheath, and the grout is discharged from the middle and other ends of the sheath. Grout was injected and filled into the sheath without checking the internal air discharge through the holes and the state of grout filling.
（発明が解決しようとする課Ｉｌり
この場合、下り勾配のついたシースやシース内に設けら
れている溝の上面部等はエアー溜りとなりやすく、グラ
ウト材の充填が不十分になるという問題点があった。(In this case, the problem that the invention aims to solve is that the sheath with a downward slope and the upper surface of the groove provided in the sheath tend to become air pockets, resulting in insufficient filling of grout material. was there.
本発明は前記従来技術の有する問題点に鑑みて提案され
たもので、その目的とする処は、シース内にエアー溜り
等が起床することなく、グラウト材が完全に充填される
シース内グラウトの注入方法を提供する点にある。The present invention has been proposed in view of the above-mentioned problems of the prior art, and its purpose is to provide a grout in a sheath that is completely filled with grout material without causing air pockets or the like in the sheath. The point is that it provides an injection method.
（課題を解決するための手段）
前記の目的を達成するため、本発明に係るシース内グラ
ウト材の注入方法によれば、コンクリート部材に埋設さ
れたシースにおける一端部のグラウド材排出口には吸気
用ポンプを接続し、他端部のグラウト材注入口にはグラ
ウト材供給源を接続し、前記吸気用ポンプによって前記
シース内のエアーを減圧し、同シース内にグラウト材を
吸引、充填ものである。(Means for Solving the Problems) In order to achieve the above object, according to the method for injecting grout material into a sheath according to the present invention, an air intake is provided at the grout material outlet at one end of the sheath embedded in a concrete member. A grout supply source is connected to the grout injection port at the other end, and the air in the sheath is depressurized by the suction pump, and grout is sucked into the sheath and filled. be.
（作用）
本発明によれば前記したように、コンクリート部材に埋
設されたシースの一端部のグラウト排出口に接続された
吸気用ポンプを作動することによって、前記シース内エ
アーの減圧を行ない、この減圧にある吸引力によってシ
ースの他端部に接続されたグラウト材供給源よりシース
内にグラウト材を吸引、充填することによって、シース
内上面等にエアー溜りを生起したり、グラウト社内への
エアーの巻込みを生起することなく、シース内にグラウ
ト材を密実に充填せしめるものである。(Function) According to the present invention, as described above, the air inside the sheath is depressurized by operating the suction pump connected to the grout outlet at one end of the sheath buried in the concrete member. By suctioning and filling the grout material into the sheath from the grout supply source connected to the other end of the sheath by the suction force under reduced pressure, it may cause air pockets on the upper surface of the sheath, etc., or cause air to flow into the grout interior. This allows the grout to be densely filled into the sheath without causing any entrainment.
（実施例） 以下本発明を図示の実施例について説明する。(Example) The present invention will be described below with reference to the illustrated embodiments.
（１）はコンクリート梁材（２）内に、同梁材（２）を
縦貫するように埋設されたシースで、同シース（１）の
−端部のグラウト材排出口（１ａ）に吸気用ポンプ（３
）が接続され、他端部のグラウト材注入（Ｉｂ）にはグ
ラウト材供給源となるグラウト材容器（４）が接続され
ている。(1) is a sheath buried in the concrete beam (2) so as to pass through the beam (2) vertically, and the grout outlet (1a) at the - end of the sheath (1) is used for intake. Pump (3
) is connected, and a grout container (4) serving as a grout supply source is connected to the grout injection (Ib) at the other end.
而して前記シース（１）内にＰＣ鋼材（５）を挿貫緊張
して前記梁材（２）にプレストレスを導入したのち、前
記吸気用ポンプ（３）を作動してシース（１）内のエア
ーを減圧することによって、グラウト材容器（４）より
グラウト材（６）を吸引し、シース（１）内の上面にエ
アー溜りを生起したり、グラウト材〔６〕内へのエアー
の巻込みを生起したりすることなく、シース（１）内に
グラウト材（６）を密実に充填するものである。After inserting and tensioning the PC steel material (5) into the sheath (1) and introducing prestress into the beam material (2), the suction pump (3) is operated to remove the sheath (1). By reducing the pressure of the air inside, the grout material (6) is sucked from the grout material container (4), causing an air pocket on the upper surface of the sheath (1), and preventing air from flowing into the grout material [6]. The grout material (6) is densely filled into the sheath (1) without causing entrainment.
（発明の効果）
本発明によれば前記したように、コンクリート部材に埋
設されたシースにおける一端部のグラウト材排出口、及
び他端部のグラウト材注入口に夫々吸気用ポンプ及びグ
ラウト材供給源を接続し、前記吸気用ポンプを作動する
ことによってシース内にグラウト材を吸引充填し、シー
ス内上面等のエアー溜りの欠陥が生起することなく、グ
ラウト社内へのエアーの巻込みによる欠陥が生起するこ
七のないようにし、シース内に密実にグラウト材を充填
しうるようにしたものである。(Effects of the Invention) According to the present invention, as described above, a suction pump and a grout supply source are provided at the grout outlet at one end and the grout inlet at the other end of the sheath embedded in the concrete member, respectively. The grout material is suctioned and filled into the sheath by connecting the suction pump and activating the suction pump, thereby eliminating defects caused by air pockets on the upper surface of the sheath, etc., and defects caused by air being drawn into the grout. The grout material can be densely filled into the sheath without any gaps.
第１図は本発明に係るシース内グラウトの注入方法の一
実施例の寞施状況を示す縦断面図である。
（１）・・・シース、
（１ａ）・＝グラウト材排出口
（ｌｂ）・・・グラウト材注入口、
（２）−・・コンクリート梁材、
（３）・・・吸気用ポンプ、
（４）−・・グラウト材容器。
代理人 弁理士 岡 本 重 文
外１名FIG. 1 is a vertical cross-sectional view showing a state of implementation of an embodiment of the method for injecting grout into a sheath according to the present invention. (1) Sheath, (1a) = grout outlet (lb) grout inlet, (2) - concrete beam, (3) intake pump, (4 ) - Grout container. Agent: Patent attorney Shige Okamoto (1 person)
Claims (1)
グラウト材排出口には吸気用ポンプを接続し、他端部の
グラウト材注入口にはグラウト材供給源を接続し、前記
吸気用ポンプによって前記シース内のエアーを減圧し、
同シース内にグラウト材を吸引、充填することを特徴と
するシース内グラウトの注入方法。A suction pump is connected to the grout discharge port at one end of the sheath buried in the concrete member, a grout supply source is connected to the grout injection port at the other end, and the suction pump pumps the inside of the sheath. depressurize the air of
A method for injecting grout into a sheath, which is characterized by sucking and filling grout material into the same sheath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14746390A JPH0441867A (en) | 1990-06-07 | 1990-06-07 | Grouting method into sheath |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14746390A JPH0441867A (en) | 1990-06-07 | 1990-06-07 | Grouting method into sheath |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0441867A true JPH0441867A (en) | 1992-02-12 |
Family
ID=15430944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14746390A Pending JPH0441867A (en) | 1990-06-07 | 1990-06-07 | Grouting method into sheath |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0441867A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003013445A (en) * | 2001-07-04 | 2003-01-15 | Kajima Corp | Grout construction method for pc structure |
| JP2013241758A (en) * | 2012-05-18 | 2013-12-05 | Ps Mitsubishi Construction Co Ltd | Method for injecting rust-proofing agent aqueous solution into cavity inside pc tendon insertion sheath in existing pc structure |
| JP2013241761A (en) * | 2012-05-18 | 2013-12-05 | Ps Mitsubishi Construction Co Ltd | Method for injecting rust-proofing agent aqueous solution into cavity inside sealed pc tendon insertion sheath in existing pc structure |
| JP5824588B1 (en) * | 2015-04-06 | 2015-11-25 | 中日本高速技術マーケティング株式会社 | Vacuum grout injection method |
| JP2015533929A (en) * | 2012-08-14 | 2015-11-26 | ウィットモアー，デイビッド | Corrosion prevention of cables in concrete structures |
-
1990
- 1990-06-07 JP JP14746390A patent/JPH0441867A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003013445A (en) * | 2001-07-04 | 2003-01-15 | Kajima Corp | Grout construction method for pc structure |
| JP2013241758A (en) * | 2012-05-18 | 2013-12-05 | Ps Mitsubishi Construction Co Ltd | Method for injecting rust-proofing agent aqueous solution into cavity inside pc tendon insertion sheath in existing pc structure |
| JP2013241761A (en) * | 2012-05-18 | 2013-12-05 | Ps Mitsubishi Construction Co Ltd | Method for injecting rust-proofing agent aqueous solution into cavity inside sealed pc tendon insertion sheath in existing pc structure |
| JP2015533929A (en) * | 2012-08-14 | 2015-11-26 | ウィットモアー，デイビッド | Corrosion prevention of cables in concrete structures |
| JP5824588B1 (en) * | 2015-04-06 | 2015-11-25 | 中日本高速技術マーケティング株式会社 | Vacuum grout injection method |
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