JPS61233149A - PC steel material - Google Patents
PC steel materialInfo
- Publication number
- JPS61233149A JPS61233149A JP7498685A JP7498685A JPS61233149A JP S61233149 A JPS61233149 A JP S61233149A JP 7498685 A JP7498685 A JP 7498685A JP 7498685 A JP7498685 A JP 7498685A JP S61233149 A JPS61233149 A JP S61233149A
- Authority
- JP
- Japan
- Prior art keywords
- steel material
- concrete
- microcapsules
- curable fluid
- types
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000463 material Substances 0.000 title claims description 37
- 229910000831 Steel Inorganic materials 0.000 title claims description 24
- 239000010959 steel Substances 0.000 title claims description 24
- 239000012530 fluid Substances 0.000 claims description 12
- 239000003094 microcapsule Substances 0.000 claims description 11
- 239000011347 resin Substances 0.000 claims description 9
- 229920005989 resin Polymers 0.000 claims description 9
- 108010010803 Gelatin Proteins 0.000 claims 1
- 229920000159 gelatin Polymers 0.000 claims 1
- 239000008273 gelatin Substances 0.000 claims 1
- 235000019322 gelatine Nutrition 0.000 claims 1
- 235000011852 gelatine desserts Nutrition 0.000 claims 1
- 239000004567 concrete Substances 0.000 description 23
- 238000000034 method Methods 0.000 description 18
- 239000000126 substance Substances 0.000 description 9
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 239000004519 grease Substances 0.000 description 5
- 239000011440 grout Substances 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 239000004570 mortar (masonry) Substances 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000003483 aging Methods 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- FAIAAWCVCHQXDN-UHFFFAOYSA-N phosphorus trichloride Chemical compound ClP(Cl)Cl FAIAAWCVCHQXDN-UHFFFAOYSA-N 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Reinforcement Elements For Buildings (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はコンクリート中に埋設した後、緊張して用いる
ＰＣｍ材に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a PCm material that is used under tension after being buried in concrete.
コンクリートに圧縮応力を導入する為にＰＣｌ３材を緊
張する作業は大別すると、コンクリートの凝固硬化以前
に行うプレテンショニング方式と凝固硬化以後に行うポ
ストテンシタニング方式とに分けら°れる。The work of tensioning PCl3 material to introduce compressive stress into concrete can be roughly divided into two types: pre-tensioning, which is performed before the concrete solidifies and hardens, and post-tension tanning, which is performed after solidifying and hardening.
更にポストテンシヲニング方式には、コンクリートとＰ
Ｃ鋼材とをモルタルを充填してボンドする方式と、グリ
ース又はアスファルト等の流動性を有する物質を介して
コンクリートとＰＣＢ材とを分離し固着しないようにす
るアンボンド方式とに分けられる。Furthermore, the post-tensioning method uses concrete and P.
There are two types of methods: a method in which concrete and PCB materials are filled with mortar and bonded together, and an unbond method in which concrete and PCB materials are separated using a fluid substance such as grease or asphalt to prevent them from sticking together.
第２図に示す様式のものはボンド方式として一般的な方
法であり、コンクリートを打設するに先立って、ＰＣ鋼
材の配筋される位置に薄鉄板製のシース等を埋設してＰ
Ｃ鋼材を挿入する空間を確保しておき、予めＰＣ鋼材を
挿入しておくか又はコンクリートの凝固後に挿通した後
、ＰＣ鋼材を緊張してコンクリートにプレストレスを導
入する。The style shown in Figure 2 is a common bonding method, in which a sheath made of thin iron plate is buried in the position where the prestressing steel reinforcement will be placed before concrete is poured.
A space for inserting the C steel material is secured, and the prestressing steel material is inserted in advance, or after the concrete has solidified, the prestress is introduced into the concrete by tensioning the prestressing steel material.
しかる後に、シース内の空間にはモルタル等の充填材を
圧入してその空隙を充満し、コンクリートとＰＣｍ材と
を強固に一体として固化するのが一般的である。Thereafter, it is common practice to press filler such as mortar into the space within the sheath to fill the void and solidify the concrete and the PCm material as one solid body.
モルタル等の充填材（グラウト）を使用する目的は、Ｐ
Ｃｓｉ材の防錆に役立たせることもあるが、この手段に
よって部材の耐久力を増し、曲げおよび剪断に対し剛性
と強さを増すことである。The purpose of using filler (grout) such as mortar is P.
It may also be useful to prevent rust in Csi materials, by increasing the durability of the component and increasing its stiffness and strength against bending and shearing.
第３図に示す様式のものはアンボンド方式の１例である
。The format shown in FIG. 3 is an example of the unbond method.
ＰＣＩｉｉＩ材の表面にグリース又はアスファルト等の
流動性を有する物質を塗布し、更にその上からポリエチ
レン等の樹脂で被覆してグリース等の物質を保護する。A fluid substance such as grease or asphalt is applied to the surface of the PCIiii material, and then a resin such as polyethylene is coated on top to protect the substance such as grease.
この材料はコンクリート中に直接埋設される。This material is embedded directly into concrete.
コンクリートが凝固硬化した後に内部のＰＣａ材を緊張
する丈でグラウト等の作業を行わなくても防錆は充分で
あるが、コンクリートとの固定は両端の定着部分のみで
あるからグラウトの効果である部材の耐久力を増すとい
う効果は期待出来ない。After the concrete solidifies and hardens, the PCa material inside is stretched to provide sufficient rust prevention even without grouting, but the grouting is effective because only the fixed parts at both ends are fixed to the concrete. The effect of increasing the durability of the components cannot be expected.
従って設計上曲げ及び剪断力に対し剛性と強さが必要と
なった場合はアンボンド方式を採用せずグラウトを行っ
てボンド方式とするのが一般的である。しかしグラウト
を行うボンド方式に於いては、その施工作業がアンボン
ド方式に比較すると、かなり面倒である。Therefore, if rigidity and strength against bending and shearing forces are required in the design, it is common to use grouting instead of using the unbond method. However, in the bond method of grouting, the construction work is considerably more troublesome than that of the unbond method.
シース、グラウト材、グラウト注入用の端部金物等の手
配、在庫管理、取付施工、グラウト注入作業及びその管
理、工程日数の延長等と言った阻隔する作業が増加する
事は避けられない。It is inevitable that there will be an increase in the number of interfering tasks, such as arranging sheaths, grout materials, end hardware for grout injection, inventory management, installation work, grout injection work and its management, and extension of process days.
このグラウトを行うボンド方式に比較すると、アンボン
ド方式の施工の簡便さは極めて魅力的である。更に施工
方法が簡単であるということは、施工結果に対して信鎖
性を低下させる要因の数も少ないというメリットをも有
するのである。Compared to the bond method, which involves grouting, the simplicity of the unbond method is extremely attractive. Furthermore, the fact that the construction method is simple has the advantage that there are fewer factors that can reduce the reliability of the construction results.
本発明者等は、このアンボンド方式のボストテンショニ
ング施工方法の有利な点を活かし、かつ、ボンド方式の
持っている曲げ剛性、剪断、耐力の向上部の特性を付与
したＰＣ鋼材の開発を志し、両者の長所を合わせて有す
るアンボンド−ボンドルｃ鋼材を開発した。The inventors of the present invention aim to develop a PC steel material that takes advantage of the advantages of this unbonded method and has the improved bending rigidity, shear, and yield strength characteristics of the bonded method. We have developed an unbond-bond C steel material that combines the advantages of both.
ＰＣ鋼材をアンボンド方式ポストテンシッニング方法で
施工をする際の基本的事項としての要点は、使用する鋼
材がコンクリート中に打設されコンクリートの硬化が進
んでコンクリートに応力を導入する時点に於いて、ＰＣ
ｇ材とコンクリートとは固着状態ではなく、比較的小さ
な力で滑動出来ることである。The basic point when constructing prestressing steel using the unbonded post-tensifying method is that when the steel is cast into concrete and the concrete hardens, stress is introduced into the concrete. , PC
The g-material and concrete are not in a fixed state and can slide with a relatively small force.
この様な状態を実現する為の一つの方法が前述したグリ
ースを塗膜してポリエチレン被覆で保護する方法である
。One method for achieving this state is to apply the aforementioned grease and protect it with a polyethylene coating.
発明者等は、この流動性物質を介在させる方法として、
被覆で全体を保護するのではなく、流動性物質を微細な
粒子として個々に独立させ、それらを各々被覆したマイ
クロカプセルをＰＣｔａ棒の外周表面に塗膜又は装着す
ることに依って滑動するメカニズムを実現させた。The inventors proposed a method for intervening this fluid substance,
Rather than protecting the entire body with a coating, we created a sliding mechanism by separating the fluid substance into individual fine particles and coating or attaching microcapsules coated with each particle to the outer peripheral surface of the PCta rod. Made it happen.
即ち、流動性物質を内部に包含したマイクロカプセルの
表面被膜はポストテンシッニングの緊張力でＰＣ鋼材が
緊張される際に、比較的小さな伸長力で粒子が破壊して
降服し、又、内部の流動性物質が滲出して潤滑性を発揮
することに依って、コンクリート中のＰＣ鋼材が容易に
滑動出来るメカニズムを実現するものである。That is, when the PC steel material is tensed by the tension force of post-tensifying, the surface coating of the microcapsules containing a fluid substance breaks down due to the relatively small elongation force, and also By exuding a fluid substance and exhibiting lubricity, a mechanism is realized in which the PC steel material in the concrete can easily slide.
さて、コンクリートに応力導入の操作である緊張作業が
終わった後に、ＰＣ鋼材とコンクリートとを強固に一体
化する固着作用としては、マイクロカプセル内の流動性
物質として時効硬化性の樹脂や、二液混合硬化性の樹脂
の様な複数種のものが合体すると時効硬化する物質を使
用する。Now, after the tension work, which is the operation of introducing stress into the concrete, is completed, the adhesion action that firmly integrates the PC steel material and the concrete is carried out using an age-hardening resin or a two-component resin as a fluid substance in the microcapsules. A substance that hardens with age when multiple types are combined, such as a mixed hardening resin, is used.
即ち、二液混合硬化性の樹脂を使用する場合は、各液の
マイクロカプセルを別々に製作し、その二種類のマイク
ロカプセルを必要量の割合に均一に混合して、それをＰ
Ｃｍ材の外周表面へ塗布又は装着する事に依り、コンク
リート中にてＰＣ鋼材が緊張される際に、二種類のマイ
クロカプセルは破壊混合して反応し、硬化及び接着作用
を発揮することにより、コンクリートとＰＣ鋼材のボン
ド性が実現出来るものである。That is, when using a two-component mixed curable resin, microcapsules for each solution are manufactured separately, the two types of microcapsules are uniformly mixed in the required amount ratio, and then P
By applying or attaching it to the outer surface of the Cm material, when the PC steel material is tensed in concrete, the two types of microcapsules break down and mix, react, and exhibit hardening and adhesive effects. It is possible to achieve bonding between concrete and PC steel.
この方法は三液以上の混合硬化性樹脂を活用する際にも
全く同様に行い得るものであり、又その他の硬化特性（
例えば水との反応硬化、塩基性硬化、カルシュラム吸収
硬化）等を活用しても良い。This method can be carried out in exactly the same way when using a three-component or more mixed curable resin, and other curing characteristics (
For example, reaction curing with water, basic curing, calcium absorption curing), etc. may be utilized.
また、各カプセルを複数室に形成し、別々の樹脂を包含
せしめてもよい。Alternatively, each capsule may be formed into multiple chambers to contain different resins.
以上の通り、本発明は従来技術である二種類の相反する
特性を両有し、ＰＣ構造物の設計施工に対し極めて有益
な材料を提供出来るものである。As described above, the present invention has two contradictory characteristics of the prior art, and can provide an extremely useful material for the design and construction of PC structures.
第１図は本発明によるＰＣ鋼材の１例を示す構造図であ
り、（Ａ）は鋼材が単線の場合の縦断面図、（Ｂ）は鋼
材が撚線の場合の横断面図である。
第２図、第３図は従来のポストテンシッニング用ＰＣｇ
材の構造図である。
１、−・−・・−綱材 ２．−・−マイクロカ
プセル被覆３、−・−・−・シース ４．−・・
−・−グラウト材５、・−・・・・・グリース ６
．−・−・ポリエチレン被覆７、−・−・・・コンクリ
ート
第１図
（Ａ）FIG. 1 is a structural diagram showing an example of a PC steel material according to the present invention, in which (A) is a longitudinal cross-sectional view when the steel material is a single wire, and (B) is a cross-sectional view when the steel material is a stranded wire. Figures 2 and 3 show the conventional post-tensioning PCg.
It is a structural diagram of the material. 1, -・-・・- Rope material 2. ---Microcapsule coating 3, ---Sheath 4. −・・
--- Grout material 5, --- Grease 6
．． −・−・Polyethylene coating 7, −・−・Concrete Fig. 1 (A)
Claims (5)
多数のマイクロカプセルによって被覆してなることを特
徴とするＰＣ鋼材。(1) A PC steel material characterized in that the outer circumferential surface of the steel material is coated with a large number of microcapsules containing a curable fluid inside.
範囲第１項記載のＰＣ鋼材。(2) The PC steel material according to claim 1, wherein the hardenable fluid is an age hardenable resin.
セルに別々に包含され、複数種のものが合体すると時効
硬化するものであることを特徴とする特許請求の範囲第
１項記載のＰＣ鋼材。(3) The curable fluid according to claim 1, wherein a plurality of types of curable fluid are separately contained in each microcapsule, and when the plurality of types are combined, the curable fluid hardens with age. PC steel material.
以上の伸長力の様な外力によって破壊される物質によっ
て形成されてなる特許請求の範囲第１項、第２項、また
は第３項記載のＰＣ鋼材。(4) The PC according to claim 1, 2, or 3, wherein the microcapsule is formed of a material such as resin or gelatin that can be destroyed by an external force such as a stretching force above a certain level. Steel material.
装着されてなる特許請求の範囲第１項、第２項、第３項
または第４項記載のＰＣ鋼材。(5) The PC steel material according to claim 1, 2, 3, or 4, wherein the microcapsules are coated or attached to the entire outer periphery of the steel material.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7498685A JPH0538818B2 (en) | 1985-04-08 | 1985-04-08 | Pc steel material |
| DE8686104809T DE3673050D1 (en) | 1985-04-08 | 1986-04-08 | TENSIONING STEEL BODY. |
| CA 506109 CA1280909C (en) | 1985-04-08 | 1986-04-08 | Prestressing steel material |
| EP19860104809 EP0198398B1 (en) | 1985-04-08 | 1986-04-08 | Prestressing steel material |
| AU55739/86A AU587442B2 (en) | 1985-04-08 | 1986-04-08 | Prestressing steel material |
| US07/061,363 US4849282A (en) | 1985-04-08 | 1987-06-15 | Prestressing steel material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7498685A JPH0538818B2 (en) | 1985-04-08 | 1985-04-08 | Pc steel material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61233149A true JPS61233149A (en) | 1986-10-17 |
| JPH0538818B2 JPH0538818B2 (en) | 1993-06-11 |
Family
ID=13563107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7498685A Expired - Lifetime JPH0538818B2 (en) | 1985-04-08 | 1985-04-08 | Pc steel material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0538818B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01188798A (en) * | 1988-01-22 | 1989-07-28 | Nec Corp | Self reinforcing type structure material |
| JP2012154097A (en) * | 2011-01-26 | 2012-08-16 | Sumitomo Electric Ind Ltd | Pregrouted pc steel material and hardening method of pregrout layer of the same |
| CN104508218A (en) * | 2012-07-31 | 2015-04-08 | 住友电工钢线株式会社 | Pregrouted pc steel material and method for hardening pregrout layer thereof |
| CN105247149A (en) * | 2013-12-25 | 2016-01-13 | 住友电工钢线株式会社 | Pregrouted PC steel and method for hardening pregrouted layer |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS505488A (en) * | 1973-05-17 | 1975-01-21 |
-
1985
- 1985-04-08 JP JP7498685A patent/JPH0538818B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS505488A (en) * | 1973-05-17 | 1975-01-21 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01188798A (en) * | 1988-01-22 | 1989-07-28 | Nec Corp | Self reinforcing type structure material |
| JP2012154097A (en) * | 2011-01-26 | 2012-08-16 | Sumitomo Electric Ind Ltd | Pregrouted pc steel material and hardening method of pregrout layer of the same |
| CN104508218A (en) * | 2012-07-31 | 2015-04-08 | 住友电工钢线株式会社 | Pregrouted pc steel material and method for hardening pregrout layer thereof |
| US10081943B2 (en) | 2012-07-31 | 2018-09-25 | Sumitomo (Sei) Steel Wire Corp. | Pregrouted PC steel material and method for hardening pregrout layer thereof |
| CN105247149A (en) * | 2013-12-25 | 2016-01-13 | 住友电工钢线株式会社 | Pregrouted PC steel and method for hardening pregrouted layer |
| US10323415B2 (en) | 2013-12-25 | 2019-06-18 | Sumitomo (Sei) Steel Wire Corp. | Pregrouted PC steel material and curing method for pregrouted layer therein |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0538818B2 (en) | 1993-06-11 |
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