JPH01192946A - Fiber-reinforced plastics substitute for concrete tension member - Google Patents
Fiber-reinforced plastics substitute for concrete tension memberInfo
- Publication number
- JPH01192946A JPH01192946A JP63018182A JP1818288A JPH01192946A JP H01192946 A JPH01192946 A JP H01192946A JP 63018182 A JP63018182 A JP 63018182A JP 1818288 A JP1818288 A JP 1818288A JP H01192946 A JPH01192946 A JP H01192946A
- Authority
- JP
- Japan
- Prior art keywords
- fiber
- resin
- concrete
- reinforced plastic
- rod
- 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
- 229920002430 Fibre-reinforced plastic Polymers 0.000 title claims description 17
- 239000011151 fibre-reinforced plastic Substances 0.000 title claims description 17
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 10
- 239000004917 carbon fiber Substances 0.000 claims abstract description 10
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000000835 fiber Substances 0.000 claims abstract description 7
- 229920006231 aramid fiber Polymers 0.000 claims abstract description 4
- 239000004698 Polyethylene Substances 0.000 claims abstract description 3
- 239000003365 glass fiber Substances 0.000 claims abstract description 3
- -1 polyethylene Polymers 0.000 claims abstract description 3
- 229920000573 polyethylene Polymers 0.000 claims abstract description 3
- 239000002990 reinforced plastic Substances 0.000 claims abstract 3
- 239000012783 reinforcing fiber Substances 0.000 claims description 21
- 210000002435 tendon Anatomy 0.000 claims description 14
- 229920005989 resin Polymers 0.000 abstract description 30
- 239000011347 resin Substances 0.000 abstract description 30
- 238000000034 method Methods 0.000 description 21
- 238000012545 processing Methods 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 7
- 238000000465 moulding Methods 0.000 description 7
- 239000007788 liquid Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000003822 epoxy resin Substances 0.000 description 3
- 230000009477 glass transition Effects 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012805 post-processing Methods 0.000 description 2
- 239000004760 aramid Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004634 thermosetting polymer Substances 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
- 229920001567 vinyl ester resin Polymers 0.000 description 1
Landscapes
- Reinforcement Elements For Buildings (AREA)
- Moulding By Coating Moulds (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、周方向に捩じり加工がなされているコンク
リートの緊張材代替用繊維強化プラスチックロッドに関
するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a fiber-reinforced plastic rod that is twisted in the circumferential direction and used as a substitute for tendons in concrete.
従来から、コンクリートの緊張材（鉄筋を含む）には鉄
製ロッドが用いられているが、コンクリート中に浸入す
る水分による錆等の発生や腐食の恐れがあるため、鉄製
ロッドに代わるものとして、断面形状が矩形状、略十文
字状等の繊維強化プラスチックロッド（ＦＲＰロッド）
の製品化が検討されている。しかしながら、このような
ＦＲＰロッドは、表面が比較的平滑であることと、コン
クリートに対して馴じみ性が悪いことから、コンクリー
トに対する定着性に問題があり、補強効果等に難点があ
る。Traditionally, iron rods have been used as tension members (including reinforcing bars) in concrete, but there is a risk of rust and corrosion due to moisture seeping into the concrete, so as an alternative to iron rods, cross-sectional Fiber-reinforced plastic rods (FRP rods) with rectangular or cross-shaped shapes
Commercialization is being considered. However, since such FRP rods have a relatively smooth surface and are not compatible with concrete, they have problems in fixing to concrete and have difficulties in reinforcing effects.
このようにＦＲＰロッドは、コンクリートに対する定着
性の点に問題があ゛るため、その改善策として、ＦＲＰ
ロツ・ドの表面に、後加工で凹凸を付与したり、ノツチ
をつけたりすることが考えられるが、後加工でこのよう
にすることは、極めて煩雑であり、実質的に不可能であ
る。As mentioned above, FRP rods have many problems in terms of fixation to concrete, so as a way to improve this problem, FRP rods are
It is conceivable to add irregularities or notches to the surface of the rod in post-processing, but doing so in post-processing is extremely complicated and virtually impossible.
この発明は、このような事情に鑑みなされたもので、コ
ンクリートの定着が良好で強度的にも優れたコンクリー
トの緊張材代替用繊維強化プラスチックロッドの提供を
その目的とする。The present invention was made in view of the above circumstances, and an object thereof is to provide a fiber-reinforced plastic rod for use as a tendon substitute for concrete, which has good fixation of concrete and has excellent strength.
上記の目的を達成するため、この発明のコンクリートの
緊張材代替用繊維強化プラスチックロッドは、樹脂含浸
補強繊維からなり、真円以外の断面形状を有する強化プ
ラスチックロッドにおいて、長手方向に連続的または部
分的な捩じりが施されているという構成をとる。In order to achieve the above object, the fiber-reinforced plastic rod of the present invention for replacing tendons in concrete is made of resin-impregnated reinforcing fibers and has a cross-sectional shape other than a perfect circle. It has a structure with a certain twist.
すなわち、本発明者らは、上記ＦＲＰロッドの定着性の
改善について、ロンドの形状を中心に研究を重ねた結果
、コンクリートに対する定着性の向上は、ロッド表面に
凹凸を付与するよりもむしろロッド自体に捩じり加工を
加えて長手方向に連続的または部分的な捩じりを付与す
ることが効果的であることを見いだした。そして、上記
のような捩じり加工は、ＦＲＰロッドを直線状に連続的
に製造する際、本発明者らが開発したつぎのような方法
を応用することにより容易に行うことができる。すなわ
ち、樹脂含浸補強繊維を成形ダイを通過させて樹脂を半
硬化状態にすると同時に所望の断面形状に賦形し、硬化
ゾーンで硬化させるに際し、成形ダイの通過から硬化ゾ
ーンの通過に到るまでの適宜の段階で、上記半硬化状態
の樹脂含浸補強繊維に対して捩じり加工を施すことによ
り捩じり加工を施すことができる。また、上記のような
樹脂含浸補強繊維の樹脂を半硬化状態にして、捩じり力
を加えるのではなく、完全硬化させた後、捩じり力を加
えながらＦＲＰロッドの樹脂のガラス転移温度以上の温
度の加熱ゾーンを通過させても捩じり加工を施すことが
できる。In other words, the present inventors have conducted repeated research on improving the fixing properties of the FRP rods, focusing on the shape of the ronds, and have found that the fixing properties to concrete can be improved by improving the fixing properties of the rod itself rather than by adding irregularities to the rod surface. It has been found that it is effective to add a twisting process to give continuous or partial twist in the longitudinal direction. The above-described twisting process can be easily performed by applying the following method developed by the present inventors when continuously manufacturing FRP rods in a straight line. In other words, the resin-impregnated reinforcing fiber is passed through a molding die to semi-cure the resin, simultaneously shaped into a desired cross-sectional shape, and cured in the curing zone. At an appropriate stage, the semi-cured resin-impregnated reinforcing fibers can be twisted by twisting. In addition, rather than semi-curing the resin of the resin-impregnated reinforcing fibers as described above and applying torsional force, it is completely cured, and then the glass transition temperature of the resin of the FRP rod is adjusted while applying torsional force. Twisting processing can be performed even when passing through a heating zone at a temperature higher than that.
この発明のコンクリートの緊張材代替用繊維強化プラス
チックロッドは、樹脂と補強繊維等とを用いて得られる
。なお、この発明におけるコンクリート緊張材は、鉄筋
を含むものである。The fiber-reinforced plastic rod for use as a substitute for tendons in concrete according to the present invention is obtained using a resin, reinforcing fibers, and the like. Note that the concrete tension material in this invention includes reinforcing bars.
上記樹脂としては、エポキシ樹脂、不飽和ポリエステル
樹脂、ビニルエステル樹脂等の熱硬化性樹脂があげられ
る。Examples of the resin include thermosetting resins such as epoxy resins, unsaturated polyester resins, and vinyl ester resins.
また、上記補強繊維としては、ガラス繊維、カーボン繊
維等の無機系繊維や、アラミド繊維、高強度ポリエチレ
ン繊維等の有機系繊維を適宜に用いることができる。こ
れらは、単独で用いてもよいし併用しても差し支えはな
い。Further, as the reinforcing fibers, inorganic fibers such as glass fibers and carbon fibers, and organic fibers such as aramid fibers and high-strength polyethylene fibers can be used as appropriate. These may be used alone or in combination without any problem.
この発明では、上記の原料を用いて、コンクリート緊張
材代替用繊維強化プラスチックロッドを連続的に製造す
る場合において、先に述べたように、本発明者らが開発
した２種類の方法で捩じり加工を施す。第１の方法は、
上記の樹脂を補強繊維に含浸させた樹脂含浸補強繊維を
、引抜成形法により、成形ダイに掛けたのち硬化ゾーン
を通して硬化させ製品化するに際し、成形ダイの通過か
ら硬化ゾーンの通過に到るまでの適宜の段階で、上記樹
脂含浸補強繊維を捩じり加工治具を経由させる等によっ
て捩じり加工を施すという方法である。この際、捩じり
加工の対象となる樹脂含浸補強繊維は、半硬化状態であ
ることが重要である。In this invention, when continuously manufacturing fiber-reinforced plastic rods for use as substitutes for concrete tendons using the above-mentioned raw materials, as mentioned above, two methods developed by the present inventors are used to twist the rods. Processing is applied. The first method is
The resin-impregnated reinforcing fibers, which are made by impregnating reinforcing fibers with the above resin, are applied to a molding die using a pultrusion method, and then passed through a curing zone to be cured and manufactured into a product. In this method, at an appropriate stage, the resin-impregnated reinforcing fiber is twisted by passing it through a twisting jig or the like. At this time, it is important that the resin-impregnated reinforcing fiber to be twisted is in a semi-hardened state.
上記樹脂が半硬化状態になっていないと、捩じり加工治
具を経由させて捩じり加工を施しても、硬化ゾーンに到
るまでに、その捩じり加工状態が解けてしまい、得られ
るプラスチックロッドに捩じりが付与されなくなる。上
記捩じり加工治具としては、成形グイ状のものを用いて
もよいし、ローラ状のものを組み合わせて用いてもよい
。また、特別な加工治具を用いず引き抜き成形の際の牽
引装置を回転させ、これを捩じり加工治具として用いる
ようにしてもよい。要は、上記樹脂含有補強繊維に対し
て連続的もしくは断続的に捩じり加工できるものであれ
ば特に制限するものではない。If the resin is not in a semi-hardened state, even if it is twisted through a twisting jig, the twisted state will come undone before it reaches the hardening zone. The resulting plastic rod is no longer twisted. As the twisting jig, a molded goug-like tool may be used, or a roller-like tool may be used in combination. Alternatively, the traction device during pultrusion may be rotated and used as a twisting jig without using a special processing jig. In short, there are no particular limitations as long as the resin-containing reinforcing fibers can be twisted continuously or intermittently.
第２の方法は、樹脂含浸補強繊維を例えば、引抜成形法
により、成形ダイで成形すると同時に完全硬化させるか
、または成形ダイで半硬化状態にした後加熱キュア炉を
通して完全硬化させたのち、これに上記のような捩じり
加工治具で捩じり力を加えながら、上記樹脂のガラス転
移温度以上の温度の加熱ゾーンを通過させて捩じり加工
を施すという方法である。すなわち、この方法は、従来
不可能視されていた完全硬化した熱硬化樹脂に対する変
形加工を可能ならしめるものであり、これによって、完
全硬化後のものに対しても捩じってその状態でのセット
が可能になる。なお、樹脂含浸補強繊維の補強繊維とし
て有機系補強繊維を使用する場合において、その有機系
補強繊維のＴｇ（ガラス転移温度）が含浸させる樹脂の
Ｔｇより低い場合には、上記加熱ゾーンの温度を、含浸
させる樹脂のＴｇではなく、補強繊維のＴｇを基準にし
、このＴｇ以上の温度に設定することによっても、上記
と同様周方向に捩じり加工をなすことができる。The second method is to completely cure resin-impregnated reinforcing fibers at the same time as molding them with a molding die, for example, by pultrusion, or to semi-cure them with a molding die and then completely cure them in a heating curing furnace. In this method, the resin is twisted by passing through a heating zone having a temperature higher than the glass transition temperature of the resin while applying a twisting force using the above-mentioned twisting jig. In other words, this method makes it possible to deform completely cured thermoset resin, which was considered impossible in the past, and allows it to be twisted even after it is completely cured. set is possible. In addition, when using organic reinforcing fibers as reinforcing fibers for resin-impregnated reinforcing fibers, if the Tg (glass transition temperature) of the organic reinforcing fibers is lower than the Tg of the resin to be impregnated, the temperature of the heating zone should be adjusted. Similarly to the above, the twisting process can be performed in the circumferential direction by setting the temperature to be higher than the Tg of the reinforcing fibers instead of the Tg of the resin to be impregnated.
上記のような捩じり加工の施されたＦＲＰロッドは、そ
の断面形状が、矩形状、略十字状、カギ状、凸字状等、
角部を有した形状等真円以外の断面形状のものであるこ
とが必要である。このような形状のものでないと、捩じ
り加工を施しても、その涙じり形状が表面に現れないか
らである。そして、このように捩じり加工を施すことに
より、アンカー効果等が生じ、それによってコンクリー
トに対する定着性が向上する。なお、上記捩じり加工は
、全体に施す必要はなく、ロッドの両端等に施す等部分
的であってもよい。また、捩じりは、一定方向だけでな
く、正転、逆転を交互に、または所定領域ごとに繰り返
すようにしてもよい。The above-mentioned twisted FRP rod has a cross-sectional shape such as a rectangular shape, a substantially cross shape, a hook shape, a convex shape, etc.
It is necessary to have a cross-sectional shape other than a perfect circle, such as a shape with corners. This is because if it does not have such a shape, the teardrop shape will not appear on the surface even if it is twisted. By performing the twisting process in this manner, an anchor effect or the like is generated, thereby improving the fixing property to concrete. It should be noted that the above-mentioned twisting process does not need to be applied to the entire rod, and may be applied to a portion of the rod, such as to both ends of the rod. Further, the twisting may be performed not only in a fixed direction but also by alternating forward rotation and reverse rotation, or by repeating each predetermined region.
なお、捩じり加工は、上記の方法に限定するものではな
く、それ以外の方法によってもよい。Note that the twisting process is not limited to the above method, and other methods may be used.
つぎに、この発明を実施例にもとづいて説明する。Next, the present invention will be explained based on examples.
〔実施例１〕
ＰＡＮ系高強度カーボン繊維をアクリルエポキシ樹脂で
固めた連続引き抜きコンクリート緊張材代替用繊維強化
プラスチックロッドで断面形状が略十字状のものを上記
第１の方法に従って作製した。第１図はこの実施例の具
体的な製造説明図である０図において、ｌは樹脂槽であ
り、内部にアクリルエポキシ樹脂の樹脂液が満たされて
いる。[Example 1] A continuously drawn fiber-reinforced plastic rod for replacing concrete tendons made of PAN-based high-strength carbon fibers hardened with acrylic epoxy resin and having a substantially cross-shaped cross-sectional shape was manufactured according to the first method described above. FIG. 1 is a detailed manufacturing explanatory diagram of this embodiment. In FIG. 0, 1 is a resin tank, and the interior thereof is filled with a resin liquid of acrylic epoxy resin.
２はＰＡＮ系高強度カーボン繊維をＶｔ （体積含有
率）で７０％用いたカーボン繊維ロービングであり、ロ
ーラ４によって上記樹脂層ｌの樹脂液内に導入され、樹
脂液を含浸されて矢印方向に連続的に移送される。３は
成形グイであり、加熱によって上記樹脂液含浸カーボン
繊維ロービング２における樹脂液を半硬化状態にすると
同時に、第２図−に示すように、上記樹脂含浸カーボン
繊維ロービング２を、そのダイス口５によって略十字状
断面形状を有する線状体に連続的に形成する。６は第２
図に示すように第１成形ローラ７、第２成形ローラ８．
第３成形ローラ９からなる捩じり加工治具であり、成形
ダイ３を経た半硬化状の樹脂含浸補強繊維に対して、図
示のように、１／４回転（９０°）の捩じり加工を施し
ている。１０は上記含浸樹脂を硬化させる樹脂硬化炉（
第１図参照）である。１１は第２の捩じり加工治具であ
り、上記第１の捩じり加工治具６と同様第１〜第３の成
形ローラ（図示せず）を備え、上記第１の捩じり加工治
具６に対して９０’捩じれた状態で設けられ、第１の捩
じり加工治具６を経た樹脂含浸補強繊維に対して、上記
硬化炉１０で樹脂が完全に硬化するまでに、さらに捩じ
り加工を施し、上記硬化炉１０における樹脂の完全硬化
でその捩じり状態を固定するようになっている。１２は
引き抜き駆動用の牽引コンベアであり、上下のコンベア
の間に、上記硬化炉１０を経て得られたコンクリートの
緊張材代替用繊維強化プラスチックロッドを挟んで、矢
印方向に牽引駆動するようになっている。2 is a carbon fiber roving made of PAN-based high-strength carbon fiber with a Vt (volume content) of 70%, which is introduced into the resin liquid of the resin layer 1 by the roller 4, impregnated with the resin liquid, and roving in the direction of the arrow. Continuously transferred. Reference numeral 3 denotes a molding gou, which heats the resin liquid in the resin liquid-impregnated carbon fiber roving 2 to a semi-hardened state, and at the same time, as shown in FIG. It is continuously formed into a linear body having a substantially cruciform cross-sectional shape. 6 is the second
As shown in the figure, a first forming roller 7, a second forming roller 8.
This is a torsion processing jig consisting of a third forming roller 9, which twists the semi-cured resin-impregnated reinforcing fibers passed through the forming die 3 by 1/4 turn (90°) as shown in the figure. Processed. 10 is a resin curing furnace (
(see Figure 1). Reference numeral 11 denotes a second torsion processing jig, which, like the first torsion processing jig 6, is equipped with first to third forming rollers (not shown), and The resin-impregnated reinforcing fibers are provided in a 90' twisted state relative to the processing jig 6 and have passed through the first twisting jig 6, until the resin is completely cured in the curing furnace 10. Further, a twisting process is performed, and the twisted state is fixed by completely curing the resin in the curing furnace 10. Reference numeral 12 designates a pulling conveyor for pulling and driving, and a fiber-reinforced plastic rod for use as a tendon substitute for concrete obtained through the curing furnace 10 is sandwiched between the upper and lower conveyors, and is pulled and driven in the direction of the arrow. ing.
このようにして、第３図に示すように、長手方向に対し
て周方向に捩じり加工がなされているコンクリートの緊
張材代替用繊維強化プラスチックロッド（寸法ａおよび
ｂは１０ｍｍ、ｃは３Ｍ）が連続的に得られ適当な長さ
に切断され製品化される。In this way, as shown in Fig. 3, fiber-reinforced plastic rods (dimensions a and b are 10 mm, c are 3M ) is continuously obtained and cut into appropriate lengths to produce products.
なお、上記の実施例では、樹脂の硬化を加熱によって行
っているが、これに限らず紫外線照射。In the above embodiments, the resin is cured by heating, but the resin is not limited to this and may be cured by ultraviolet irradiation.
電子線照射等によって硬化させるようにしてもよい。ま
た、上記実施例では、捩じり加工治具を２組用いている
が１．第１の捩じり加工治具６だけを用いるようにして
もよいし、また第２の捩じり加工治具１１だけを用いる
ようにしても差し支えはない。また、上記のような捩じ
り加工治具６．１１を用いず、先に述べたように、牽引
コンベアｌ２を、コンクリートの緊張材代替用繊維強化
プラスチックロッドに対して捩じった状態に回転させて
取り付け、牽引コンベア１２自体を捩じり加工治具とし
て用いてもよい。It may be hardened by electron beam irradiation or the like. In addition, in the above embodiment, two sets of torsion processing jigs are used, but 1. There is no problem even if only the first twisting jig 6 or only the second twisting jig 11 is used. In addition, without using the above-mentioned twisting jig 6.11, as mentioned earlier, the traction conveyor l2 is twisted with respect to the fiber-reinforced plastic rod used as a substitute for concrete tendons. The towing conveyor 12 itself may be used as a twisting jig by rotating and attaching it.
〔実施例２〕
第２図に示す第１〜第３の成形ローラ７〜９からなるＩ
戻じり加熱治具６の全体を樹脂の移送方向に対して、左
に回転させ、ついで所定の時間間隔で右に回転させると
いうことによって、捩じり加工を所定の間隔で正逆に行
った。それ以外は実施例１と同様にして、第４図に示す
ようなコンクリートの緊張材代替用繊維強化プラスチッ
クロッドを得た。[Example 2] I consisting of the first to third forming rollers 7 to 9 shown in FIG.
By rotating the entire return heating jig 6 to the left with respect to the resin transfer direction and then rotating it to the right at predetermined time intervals, the twisting process is performed in forward and reverse directions at predetermined intervals. Ta. Other than that, the same procedure as in Example 1 was carried out to obtain a fiber-reinforced plastic rod for use as a tendon substitute for concrete as shown in FIG.
〔実施例３〕
成形ダイ３で加熱によって樹脂含浸カーボン繊維ロービ
ング２における樹脂液を完全硬化状態にした後、適宜の
長さに切断しその両端部分のみに捩じり力を与えた。そ
れ以外は実施例１と同様にして、第５図に示すような、
両端部分が捩じり加工が施されその間がストレートにな
っているコンクリートの緊張材代替用繊維強化プラスチ
ックロッドを得た。[Example 3] After the resin liquid in the resin-impregnated carbon fiber roving 2 was completely cured by heating with the molding die 3, it was cut into an appropriate length and a twisting force was applied only to both ends thereof. Other than that, the procedure was the same as in Example 1, and as shown in FIG.
A fiber-reinforced plastic rod for use as a substitute for tendons in concrete, which has twisted ends and a straight part between them, was obtained.
〔実施例４〕
ＰＡＮ系高強度カーボン繊維の代わりにアラミド繊維Ｖ
、＝７０％を用いた。それ以外は実施例１と同様にして
コンクリートの緊張材代替用繊維強化プラスチックロッ
ドを得た。[Example 4] Aramid fiber V instead of PAN-based high strength carbon fiber
, = 70% was used. Other than that, a fiber-reinforced plastic rod for use as a tendon substitute for concrete was obtained in the same manner as in Example 1.
上記実施例１および４品は、共に捩じりのピッチは１Ｍ
ピッチ４で作製したが、上記ピッチは自由に変えること
が可能である。The torsional pitch of the above-mentioned Examples 1 and 4 products is 1M.
Although the pitch was 4, the pitch can be changed freely.
以上のように、この発明のコンクリートの緊張材代替用
繊維強化プラスチックロッドは、捩じり加工が施されて
いるため、コンクリートに対する定着性、密着性に優れ
、かつ機械的強度にも優れている。As described above, the fiber-reinforced plastic rod of the present invention for use as a substitute for tendon material in concrete is twisted, so it has excellent fixation and adhesion to concrete, as well as excellent mechanical strength. .
第１図はこの発明の一実施例の製造状態説明図、第２図
はその要部の斜視図、第３図はこの発明の一部破断斜視
図、第４図はこの発明の他の実施例の破断斜視図、第５
図はさらに他の実施例の破断斜視図である。
２・・・カーボン繊維ロービング ３・・・成形グイ６
．１１・・・捩じり加工治具 １０・・・樹脂硬化炉特
許出願人 日東電気工業株式会社
代理人 弁理士 西 藤 征 彦
て５１８
：３０Fig. 1 is an explanatory diagram of the manufacturing state of one embodiment of the present invention, Fig. 2 is a perspective view of the main parts thereof, Fig. 3 is a partially cutaway perspective view of the invention, and Fig. 4 is another embodiment of the invention. Example broken perspective view, No. 5
The figure is a cutaway perspective view of still another embodiment. 2... Carbon fiber roving 3... Molded gui 6
．． 11... Twisting processing jig 10... Resin curing furnace Patent applicant Nitto Electric Industry Co., Ltd. Representative Patent attorney Yukihiko Nishifuji 518:30
Claims (2)
を有する強化プラスチックロッドにおいて、長手方向に
連続的または部分的な捩じりが施されていることを特徴
とするコンクリートの緊張材代替用繊維強化プラスチッ
クロッド。(1) A reinforced plastic rod made of resin-impregnated reinforcing fibers and having a cross-sectional shape other than a perfect circle, which is continuously or partially twisted in the longitudinal direction, as a tendon alternative for concrete. Fiber reinforced plastic rod for use.
ド繊維および高強度ポリエチレンからなる群から選択さ
れた少なくとも一つの繊維である特許請求の範囲第１項
記載のコンクリートの緊張材代替用繊維強化プラスチッ
クロッド。(2) The fiber-reinforced plastic for replacing tendons in concrete according to claim 1, wherein the reinforcing fiber is at least one fiber selected from the group consisting of glass fiber, carbon fiber, aramid fiber, and high-strength polyethylene. rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63018182A JPH01192946A (en) | 1988-01-28 | 1988-01-28 | Fiber-reinforced plastics substitute for concrete tension member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63018182A JPH01192946A (en) | 1988-01-28 | 1988-01-28 | Fiber-reinforced plastics substitute for concrete tension member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01192946A true JPH01192946A (en) | 1989-08-03 |
Family
ID=11964469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63018182A Pending JPH01192946A (en) | 1988-01-28 | 1988-01-28 | Fiber-reinforced plastics substitute for concrete tension member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01192946A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0516252A (en) * | 1991-07-16 | 1993-01-26 | Sekisui Jushi Co Ltd | Manufacture of reinforcing material made of fiber-reinforced resin |
| WO1995035199A1 (en) * | 1994-06-17 | 1995-12-28 | Chisso Corporation | Elongated body of fiber-reinforced resin and method of manufacturing the same |
| US5749211A (en) * | 1992-11-06 | 1998-05-12 | Nippon Steel Corporation | Fiber-reinforced plastic bar and production method thereof |
| JP2006205519A (en) * | 2005-01-27 | 2006-08-10 | Sekisui Chem Co Ltd | Manufacturing method of fiber-reinforced resin molded product, intermediate molded product and its manufacturing method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS503416A (en) * | 1973-05-16 | 1975-01-14 |
-
1988
- 1988-01-28 JP JP63018182A patent/JPH01192946A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS503416A (en) * | 1973-05-16 | 1975-01-14 |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0516252A (en) * | 1991-07-16 | 1993-01-26 | Sekisui Jushi Co Ltd | Manufacture of reinforcing material made of fiber-reinforced resin |
| US5749211A (en) * | 1992-11-06 | 1998-05-12 | Nippon Steel Corporation | Fiber-reinforced plastic bar and production method thereof |
| WO1995035199A1 (en) * | 1994-06-17 | 1995-12-28 | Chisso Corporation | Elongated body of fiber-reinforced resin and method of manufacturing the same |
| US5792527A (en) * | 1994-06-17 | 1998-08-11 | Chisso Corporation | Products in a continuous length formed from fiber-reinforced resin and process for preparing the same |
| JP2006205519A (en) * | 2005-01-27 | 2006-08-10 | Sekisui Chem Co Ltd | Manufacturing method of fiber-reinforced resin molded product, intermediate molded product and its manufacturing method |
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