JPH07139093A - Reinforcing bar of resin impregnated fiber composite material and manufacture thereof - Google Patents
Reinforcing bar of resin impregnated fiber composite material and manufacture thereofInfo
- Publication number
- JPH07139093A JPH07139093A JP5282781A JP28278193A JPH07139093A JP H07139093 A JPH07139093 A JP H07139093A JP 5282781 A JP5282781 A JP 5282781A JP 28278193 A JP28278193 A JP 28278193A JP H07139093 A JPH07139093 A JP H07139093A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- reinforcing bar
- impregnated
- fiber
- impregnated fiber
- 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
Landscapes
- Reinforcement Elements For Buildings (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、コンクリート内に配
設される補強筋に係り、特に、軽量化及び防錆性に優れ
た樹脂含浸繊維複合体製補強筋及びその製造方法に関す
るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reinforcing bar arranged in concrete, and more particularly to a reinforcing bar made of a resin-impregnated fiber composite excellent in weight saving and excellent in rust prevention and a manufacturing method thereof. .
【０００２】[0002]
【従来の技術】従来より、コンクリート内に配設され
て、コンクリートを補強する補強筋として、鋼製ものに
代えて樹脂含浸繊維複合体製のものが使用されつつあ
る。この種の樹脂含浸繊維複合体製補強筋は、炭素繊
維、ガラス繊維等の無機質繊維やアラミド繊維、ポリエ
ステル繊維等の化学繊維を、熱可塑性樹脂または熱硬化
性樹脂からなるバインダーによって一体化したもので、
鋼製のものと比較して、軽量であり、かつ防錆性に優れ
ているため、塩害等の心配がなく、また、磁性に影響を
与えることがないため、リニアモータカー等の軌道の構
築への利用に期待されている。ところで、上記樹脂含浸
繊維複合体製の補強筋は、その表面とコンクリートとの
食い付き性が乏しい、つまり、補強筋とコンクリートと
の接着力が弱いという問題があった。2. Description of the Related Art Conventionally, resin reinforcing fiber composites instead of steel are being used as reinforcing bars arranged in concrete for reinforcing concrete. This type of resin-impregnated fiber composite reinforcing bar is made by integrating inorganic fibers such as carbon fibers and glass fibers and chemical fibers such as aramid fibers and polyester fibers with a binder made of a thermoplastic resin or a thermosetting resin. so,
Compared with steel ones, it is lighter in weight and has excellent rust resistance, so there is no concern about salt damage, etc., and since it does not affect magnetism, it is suitable for building tracks for linear motor cars etc. Is expected to be used. By the way, there is a problem that the reinforcing bar made of the resin-impregnated fiber composite has a poor biting property between the surface and the concrete, that is, the adhesive force between the reinforcing bar and the concrete is weak.
【０００３】このため、従来より、この補強筋の外周面
に凹凸を形成することにより、コンクリートとの食い付
き性が良好な補強筋及びその製造方法が開発されてい
る。ここで、この種の樹脂含浸繊維複合体製の補強筋及
びその製造方法として、特開平２−９２６２４号及び実
開昭６２−１４０１１５号に示された次のような技術が
知られている。 （１）特開平２−９２６２４号には、樹脂が含浸された
強化繊維を引き揃えて棒状に形成し、この棒状に形成し
た棒材の外周を、樹脂の未硬化状態にて、周面に溝部が
形成された一対のローラによって挾持することにより、
凹凸を形成することが示されている。 （２）実開昭６２−１４０１１５号には、補強繊維の連
続繊維束を一方向に束状に引き揃え、熱硬化性の樹脂を
含浸した後、引抜用の金型に通し、樹脂を硬化させて棒
状の芯体を作り、この芯体に、所望の太さの、補強繊維
の連続繊維束を、所望の角度で、かつ所望の間隔で螺旋
状に巻き付け、その後、熱硬化性樹脂を含浸し、加熱し
て樹脂を硬化させ、ふしを形成することが示されてい
る。 そして、これら（１）あるいは（２）の技術によれば、
いずれも、その外周面に凹凸が形成されて、コンクリー
トとの食い付き性が向上された補強筋を得ることができ
る。For this reason, conventionally, by forming irregularities on the outer peripheral surface of the reinforcing bar, a reinforcing bar having a good biting property with concrete and a manufacturing method thereof have been developed. Here, as the reinforcing bar made of this type of resin-impregnated fiber composite and its manufacturing method, the following techniques disclosed in JP-A-2-92624 and Japanese Utility Model Laid-Open No. 62-140115 are known. (1) In Japanese Patent Laid-Open No. 2-92624, reinforcing fibers impregnated with a resin are aligned and formed into a rod shape, and the outer circumference of the rod-shaped rod material is applied to the peripheral surface in the uncured state of the resin. By gripping with a pair of rollers with grooves formed,
It is shown to form irregularities. (2) In Japanese Utility Model Laid-Open No. 62-140115, continuous fiber bundles of reinforcing fibers are aligned in one direction in a bundle shape, impregnated with a thermosetting resin, and then passed through a drawing die to cure the resin. To form a rod-shaped core, and a continuous fiber bundle of reinforcing fibers having a desired thickness is spirally wound around the core at a desired angle and at a desired interval, and then a thermosetting resin is applied. It has been shown to impregnate and heat to cure the resin and form a nodule. Then, according to these techniques (1) or (2),
In either case, the outer peripheral surface is formed with irregularities, and a reinforcing bar having improved biteability with concrete can be obtained.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上記
（１）あるいは（２）の技術にあっては、それぞれ次の
ような問題点があった。 （１）の技術の問題点 外周側から強制的にローラを押し付けて補強筋の外周に
凸部を形成する方式であるので、内部の繊維へ大きな押
圧力がかかり、繊維の切断あるいは繊維の配向の乱れを
生じさせてしまい、補強筋の強度が低下し、コンクリー
トを確実に補強することができなくなってしまう恐れが
あった。 （２）の技術の問題点 ふしとなる補強繊維を芯体へ巻き付けて、熱硬化性樹脂
を含浸させる際に、この樹脂が、ふしとなる補強繊維へ
確実に含浸されずらく、特に、ふしとなる補強繊維と芯
体との間へ十分に樹脂が行き渡らなかった場合、芯体と
ふしとの接着強度が不十分となってしまう恐れがあっ
た。したがって、コンクリートへ埋設された補強筋へ、
長手方向へ力が作用した際に、芯体からふしが外れ、芯
体が擦り抜けてしまう恐れがあった。However, each of the techniques (1) and (2) has the following problems. Problem of the technology of (1) Since it is a method in which a roller is forcibly pressed from the outer peripheral side to form a convex portion on the outer periphery of the reinforcing bar, a large pressing force is applied to the fiber inside, and the fiber is cut or the fiber is oriented. However, there is a risk that the strength of the reinforcing bar is reduced and the concrete cannot be reliably reinforced. Problem of the technology of (2) When the reinforcing fiber to be used is wound around the core body and impregnated with the thermosetting resin, the resin is not easily impregnated into the reinforcing fiber to be used. If the resin is not sufficiently distributed between the reinforcing fiber and the core body, the adhesive strength between the core body and the nose may be insufficient. Therefore, to the reinforcing bar embedded in concrete,
When a force was applied in the longitudinal direction, there was a risk that the nodule would come off the core and the core would rub through.
【０００５】この発明は、上記事情に鑑みてなされたも
ので、コンクリートとの食い付き性に優れた高強度な樹
脂含浸繊維複合体製補強筋及びこの樹脂含浸繊維複合体
製補強筋を容易に製造することが可能な樹脂含浸繊維複
合体製補強筋の製造方法を提供することを目的としてい
る。The present invention has been made in view of the above circumstances, and can easily provide a high-strength resin-impregnated fiber composite reinforcing bar having excellent biting property with concrete and the resin-impregnated fiber composite reinforcing bar. It is an object of the present invention to provide a method for manufacturing a resin-impregnated fiber composite reinforcing bar that can be manufactured.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するため
に、第１の発明の樹脂含浸繊維複合体製補強筋は、コン
クリートの内部に配設されてコンクリート構造物の補強
を行なう樹脂含浸繊維複合体製補強筋であって、樹脂含
浸繊維を棒状に成形してなる繊維強化棒材の外周に、前
記樹脂含浸繊維に含浸されている樹脂に対して相溶性を
有する樹脂を被覆することにより樹脂層が形成され、該
樹脂層の外周に、長手方向へ亙って凹凸が形成されてな
ることを特徴としている。In order to achieve the above object, the resin-impregnated fiber composite reinforcing bar according to the first aspect of the present invention is arranged inside a concrete to reinforce a concrete structure. A composite reinforcing bar, which is formed by coating a resin-impregnated fiber into a rod-shaped fiber-reinforced rod with an outer periphery coated with a resin having compatibility with the resin impregnated in the resin-impregnated fiber. A resin layer is formed, and irregularities are formed on the outer periphery of the resin layer in the longitudinal direction.
【０００７】また、第２の発明の樹脂含浸繊維複合体製
補強筋は、第１の発明の凹凸が、長手方向へ間隔をあけ
かつ円周方向へ亙って形成された複数の環状突起と、長
手方向へ沿って形成された複数の線状突起とからなるこ
とを特徴としている。Further, in the reinforcing fiber made of the resin-impregnated fiber composite of the second invention, the unevenness of the first invention has a plurality of annular projections formed at intervals in the longitudinal direction and in the circumferential direction. , And a plurality of linear protrusions formed along the longitudinal direction.
【０００８】さらに、第３の発明の樹脂含浸繊維複合体
製補強筋の製造方法は、樹脂含浸繊維を棒状に束ね、該
樹脂含浸繊維に含浸されている樹脂をバインダーとして
一体化させることにより繊維強化棒材を成形し、該繊維
強化棒材の外周に、前記樹脂含浸繊維に含浸されている
樹脂に対して相溶性を有する未硬化状態の樹脂を被覆し
て樹脂層を形成し、該未硬化状態の樹脂層を部分的に押
圧することにより凹凸を形成し、その後、前記樹脂層を
硬化させることを特徴としている。Further, in the method for producing a reinforcing bar made of a resin-impregnated fiber composite of the third invention, the resin-impregnated fibers are bundled in a rod shape and the resin impregnated in the resin-impregnated fibers is integrated as a binder to form fibers. A reinforced rod is formed, and an uncured resin having compatibility with the resin impregnated in the resin-impregnated fiber is coated on the outer periphery of the fiber-reinforced rod to form a resin layer. The unevenness is formed by partially pressing the cured resin layer, and then the resin layer is cured.
【０００９】また、第４の発明の樹脂含浸繊維複合体製
補強筋の製造方法は、第３の発明における凹凸を、樹脂
強化棒材と同心円の円弧状に形成されかつ円周の半分よ
りも僅かに短い周長を有する凹部が形成された一対の金
型を、前記樹脂強化棒材を介してかつ長手方向へ所定寸
法の間隔をあけて互いに押し付けて、未硬化状態の前記
樹脂層の樹脂を金型の凹部からはみ出させることによ
り、前記樹脂層に、前記金型同士の間にて樹脂強化棒材
の長手方向へ沿って突出された線状突起と、前記金型の
凹部による押圧箇所の間にて樹脂強化棒材の円周方向へ
亙って突出された環状突起とから形成することを特徴と
している。The method for manufacturing a reinforcing bar made of a resin-impregnated fiber composite according to a fourth aspect of the present invention is characterized in that the unevenness according to the third aspect of the invention is formed in an arc shape concentric with the resin-reinforced rod and more than half the circumference. A pair of molds, each having a recess having a slightly shorter circumference, are pressed against each other through the resin-reinforced rod at a predetermined distance in the longitudinal direction, and the resin of the uncured resin layer is formed. By protruding from the concave portion of the mold to the resin layer, linear protrusions protruding along the longitudinal direction of the resin-reinforced rod between the molds, and a pressing portion by the concave portion of the mold. It is characterized in that it is formed from an annular protrusion protruding in the circumferential direction of the resin-reinforced rod material between.
【００１０】[0010]
【作用】そして、第１発明の樹脂含浸繊維複合体製補強
筋によれば、繊維強化棒材の外周に被覆された凹凸によ
って、コンクリートとの食い付き性が確実に確保され
る。また、樹脂層として、繊維強化棒材を構成する強化
繊維のバインダーとして用いた樹脂と相溶性を有する樹
脂が用いられているので、繊維強化棒材と樹脂層との確
実な一体化が図られる。また、第２の発明によれば、第
１の発明に加えてさらに、樹脂層に形成された凹凸が、
長手方向へ間隔をあけてかつ円周方向へ環状に形成され
た複数の環状突起と、長手方向へ沿って形成された線状
突起とからなるものであるので、コンクリートとの長手
方向の食い付き性及びコンクリートとの円周方向の食い
付き性が向上される。According to the reinforcing bar made of the resin-impregnated fiber composite according to the first aspect of the present invention, the concavity and convexity coated on the outer periphery of the fiber reinforced rod ensures the biting property with concrete. Further, as the resin layer, a resin compatible with the resin used as the binder of the reinforcing fibers constituting the fiber-reinforced rod is used, so that the fiber-reinforced rod and the resin layer can be reliably integrated. . Further, according to the second invention, in addition to the first invention, the unevenness formed on the resin layer further comprises:
Since it consists of a plurality of annular projections that are annularly formed in the circumferential direction and are spaced apart in the longitudinal direction, and linear projections that are formed along the longitudinal direction, they bite in the longitudinal direction with concrete. And the ability to bite in concrete in the circumferential direction are improved.
【００１１】さらに、第３の発明によれば、極めて容易
に、繊維強化棒材の外周に、凹凸を有する樹脂層が被覆
され、コンクリートとの食い付き性が高められた補強筋
が製造される。また、繊維強化棒材の外周に被覆した樹
脂層に凹凸を形成するので、強化繊維へ無理な力を加え
てこの強化繊維を切断したり配向を乱したりして強度を
低下させることがない。また、繊維強化棒材のバインダ
ーとして用いる樹脂と相溶性を有する樹脂によって繊維
強化棒材の外周を被覆して樹脂層を形成するので、繊維
強化棒材と樹脂層とが高強度に結合される。また、第４
の発明によれば、第３の発明に加えてさらに、長手方向
へ間隔をあけてかつ円周方向へ環状に形成された複数の
環状突起と、長手方向へ沿って形成された線状突起とか
らなる凹凸が樹脂層に形成されて、コンクリートとの長
手方向の食い付き性及びコンクリートとの円周方向の食
い付き性がそれぞれ向上された補強筋が製造される。Further, according to the third aspect of the invention, the reinforcing bar having the resin layer having irregularities coated on the outer periphery of the fiber-reinforced rod material and the biteability with concrete being enhanced can be manufactured very easily. . Further, since the unevenness is formed on the resin layer covering the outer periphery of the fiber-reinforced rod, it is possible to prevent the strength from being lowered by cutting the orientation or disturbing the orientation by applying an unreasonable force to the reinforcing fiber. . Further, since the resin layer is formed by covering the outer periphery of the fiber reinforced rod with a resin compatible with the resin used as the binder of the fiber reinforced rod, the fiber reinforced rod and the resin layer are bonded with high strength. . Also, the fourth
According to the invention, in addition to the third invention, further, a plurality of annular projections formed in an annular shape at intervals in the longitudinal direction and in the circumferential direction, and linear projections formed along the longitudinal direction. Is formed in the resin layer, and a reinforcing bar having improved longitudinal biteability with concrete and circumferential biteness with concrete is manufactured.
【００１２】[0012]
【実施例】以下、本発明の樹脂含浸繊維複合体製補強筋
及びその製造方法の実施例を図によって説明する。ま
ず、本発明の樹脂含浸繊維複合体製補強筋の製造方法に
よって製造された補強筋の構成及び形状を図１から図３
によって説明する。図において、符号１は、樹脂含浸繊
維複合体製補強筋であり、この補強筋１は、棒状に成形
された強化繊維棒材２と、この強化繊維棒材２の外周を
覆うように設けられた樹脂層３とから構成されている。
強化繊維棒材２は、強化繊維を、熱可塑性樹脂または熱
硬化性樹脂からなるバインダーによって一体化したもの
で、約６０〜７０％が強化繊維によって形成されてい
る。EXAMPLES Examples of the resin-impregnated fiber composite reinforcing bar and the method for producing the same of the present invention will be described below with reference to the drawings. First, the constitution and shape of the reinforcing bar manufactured by the method for manufacturing a resin-impregnated fiber composite reinforcing bar of the present invention are shown in FIGS.
Explained by. In the figure, reference numeral 1 is a reinforcing bar made of a resin-impregnated fiber composite, and the reinforcing bar 1 is provided so as to cover a reinforcing fiber rod 2 formed in a rod shape and the outer periphery of the reinforcing fiber rod 2. And a resin layer 3.
The reinforcing fiber rod 2 is made by integrating reinforcing fibers with a binder made of a thermoplastic resin or a thermosetting resin, and about 60 to 70% of the reinforcing fibers are formed of the reinforcing fibers.
【００１３】また、樹脂層３には、その外周に、円周方
向へ突出された複数の環状突起４、４…が長手方向へ所
定間隔をあけて形成されており、これら環状突起４、４
…の間には、長手方向へ沿って突出された線状突起５、
５…が、対向位置にそれぞれ形成されている。ここで、
熱可塑性樹脂としては、メタクリル樹脂、ポリアミド樹
脂、酢酸セルロース、塩化ビニル、ポリエチレン、ポリ
プロピレン、ポリスチレン、ポリカーボネート、ポリエ
ステル、ポリエーテルエーテルケトン、ポリフェニレン
サルファイド等が用いられる。また、熱硬化性樹脂とし
ては、エポキシ樹脂、不飽和ポリエステル樹脂、架橋メ
タクリル樹脂、フェノール樹脂、尿素樹脂、メラミン樹
脂、フラン樹脂等が好適に用いられる。Further, the resin layer 3 is formed with a plurality of annular protrusions 4, 4 ... Protruding in the circumferential direction on the outer periphery thereof at predetermined intervals in the longitudinal direction.
Between the linear protrusions 5 protruding in the longitudinal direction,
5 are formed at opposing positions, respectively. here,
As the thermoplastic resin, methacrylic resin, polyamide resin, cellulose acetate, vinyl chloride, polyethylene, polypropylene, polystyrene, polycarbonate, polyester, polyether ether ketone, polyphenylene sulfide, etc. are used. As the thermosetting resin, epoxy resin, unsaturated polyester resin, crosslinked methacrylic resin, phenol resin, urea resin, melamine resin, furan resin, etc. are preferably used.
【００１４】さらに、強化繊維としては、炭素繊維、ガ
ラス繊維等の無機質繊維、あるいはアラミッド繊維、ポ
リエステル繊維等の化学繊維の長繊維または連続繊維等
が用いられる。また、樹脂層３に用いる樹脂としては、
強化繊維棒材２を成形する際に、バインダーとして用い
た上記樹脂と相溶性を有する樹脂が用いられる。Further, as the reinforcing fibers, inorganic fibers such as carbon fibers and glass fibers, or long fibers or continuous fibers of chemical fibers such as aramid fibers and polyester fibers are used. Further, as the resin used for the resin layer 3,
When the reinforcing fiber rod 2 is molded, a resin compatible with the above resin used as the binder is used.
【００１５】次に、上記の樹脂含浸繊維複合体製補強筋
１を製造する製造方法を、各装置の構成とともに説明す
る。なお、ここでは、熱可塑性樹脂を用いる場合につい
て説明する。まず、バインダーが含浸された強化繊維か
らなる樹脂含浸繊維２ａ、２ａ…を引き揃えて、図４中
矢印イ方向へ、図示しない引取り装置によって引取る。
このようにすると、引取り装置によって引取られる樹脂
含浸繊維２ａ、２ａ…が、加熱成形装置１２へ引き込ま
れる。この加熱成形装置１２は、引き込まれた樹脂含浸
繊維２ａ、２ａ…を加熱して、バインダーを溶融させ、
その後、引き抜き型を通すことにより、樹脂含浸繊維２
ａ、２ａ…を棒状にまとめるもので、この加熱成形装置
１２に通された樹脂含浸繊維２ａ、２ａ…は、棒状にま
とめられて送り出され、その後、バインダーが硬化する
ことにより、棒状に成形された繊維強化棒材２とされ
る。Next, a manufacturing method for manufacturing the above-mentioned resin-impregnated fiber composite reinforcing bar 1 will be described together with the constitution of each device. The case of using a thermoplastic resin will be described here. First, the resin-impregnated fibers 2a, 2a ... Consisting of reinforcing fibers impregnated with a binder are aligned and taken in the direction of arrow A in FIG. 4 by a take-up device (not shown).
In this way, the resin-impregnated fibers 2a, 2a ... Taken by the take-off device are drawn into the thermoforming device 12. The thermoforming device 12 heats the drawn resin-impregnated fibers 2a, 2a, ... To melt the binder,
After that, the resin-impregnated fiber 2 is passed through a drawing die.
a, 2a ... Are grouped into a rod shape, and the resin-impregnated fibers 2a, 2a ... Passed through the heat molding device 12 are grouped into a rod shape and sent out, and then the binder is cured to be molded into a rod shape. And the fiber-reinforced rod 2.
【００１６】そして、この加熱成形装置１２によって成
形された繊維強化棒材２は、クロスヘッド１３へ引き込
まれ、このクロスヘッド１３によって、その外周側に溶
融樹脂が被覆される。このクロスヘッド１３は、クロス
ヘッド本体１４と、このクロスヘッド本体１４に取り付
けられたガイド部材１５とから構成されたもので、クロ
スヘッド本体１４には、その中心に、前記繊維強化棒材
２が挿通される、それぞれ径の異なる孔部１６、１７、
１８が形成されており、中間部に形成された孔部１７に
は、溶融樹脂供給路１９が連通されている。The fiber-reinforced rod 2 molded by the heat molding device 12 is drawn into the crosshead 13, and the crosshead 13 covers the outer peripheral side thereof with the molten resin. The crosshead 13 is composed of a crosshead body 14 and a guide member 15 attached to the crosshead body 14. The crosshead body 14 has the fiber reinforced rod 2 at the center thereof. Holes 16 and 17, which have different diameters, are inserted.
18 is formed, and the molten resin supply passage 19 is communicated with the hole 17 formed in the middle portion.
【００１７】また、前記ガイド部材１５は、クロスヘッ
ド１４の側面に固定されるフランジ部２１と、クロスヘ
ッド本体１４の上流側の孔部１８へ嵌合され、さらに、
その先端部が、クロスヘッド本体１４の中間部に形成さ
れた孔部１７内に配置される筒部２２とを一体に成形し
たものであり、筒部２２には、前記樹脂強化繊維２が挿
通されてガイドされるようになっている。即ち、このよ
うに構成されたクロスヘッド１３によれば、押出機（図
示略）から押し出される溶融樹脂を、溶融樹脂供給路１
９を通して、ガイド部材１５の筒部２２の先端部外周と
クロスヘッド本体１４の中間部に形成された孔部１７と
からなる環状流路２３へ送り込み、さらに、この環状流
路２３から、繊維強化棒材２と孔部１６との間へ環状に
送り出すようになっている。そして、上記のように、外
周に溶融樹脂、つまり、未硬化状態の樹脂層３が被覆さ
れた状態にて、クロスヘッド１３から送り出された繊維
強化棒材２は、凹凸成形装置３１によって、樹脂層３に
凹凸が形成される。The guide member 15 is fitted in the flange portion 21 fixed to the side surface of the crosshead 14 and the hole portion 18 on the upstream side of the crosshead body 14, and further,
The tip portion is integrally formed with the tubular portion 22 arranged in the hole portion 17 formed in the intermediate portion of the crosshead body 14, and the resin reinforced fiber 2 is inserted into the tubular portion 22. It is designed to be guided. That is, according to the cross head 13 configured as described above, the molten resin extruded from the extruder (not shown) is supplied to the molten resin supply path 1
9 through an outer peripheral portion of the tip portion of the tubular portion 22 of the guide member 15 and a hole portion 17 formed in an intermediate portion of the crosshead body 14, and further from this annular channel 23, fiber reinforcement It is designed to be sent out annularly between the bar 2 and the hole 16. Then, as described above, the fiber reinforced rod 2 delivered from the cross head 13 in a state where the outer periphery is covered with the molten resin, that is, the uncured resin layer 3 is Concavities and convexities are formed in the layer 3.
【００１８】また、この凹凸成形装置３１は、上下に設
けられて、互いに近接離間される金型３２、３３から構
成されたもので、それぞれの金型３２、３３は、図５に
示すように、繊維強化棒材２と略同心円の円弧状に形成
された凹部３４、３４を有している。これら金型３２、
３３に形成された凹部３４、３４は、それぞれその内周
の長さが、円周の１／２よりも僅かに短くされている。
そして、これら金型３２、３３を、互いに近接する方向
（図５中矢印ロ、ロ方向）へ移動させることにより、こ
れら金型３２、３３の凹部３４、３４によって、繊維強
化棒材２に被覆された樹脂層３が押圧されるようになっ
ている。The concavo-convex molding device 31 is composed of molds 32 and 33 which are provided on the upper and lower sides and are closely spaced from each other, and the respective molds 32 and 33 are as shown in FIG. The fiber-reinforced rod 2 has concave portions 34, 34 formed in an arc shape that is substantially concentric with the fiber-reinforced rod material 2. These molds 32,
Each of the recesses 34, 34 formed in 33 has an inner circumference length slightly shorter than 1/2 of the circumference.
Then, the molds 32 and 33 are moved in the directions in which they are close to each other (directions indicated by arrows B and B in FIG. 5), so that the recesses 34 and 34 of the molds 32 and 33 cover the fiber-reinforced rod 2. The resin layer 3 thus pressed is pressed.
【００１９】ここで、この凹凸成形装置３１では、それ
ぞれの金型３２、３３を、寸法Ｌ１の隙間を有する位置
（凹部が同心円となる位置）まで近接させることによ
り、樹脂層３を押圧するようになっており（図５参
照）、さらに、金型３２、３３による樹脂層３の押圧を
所定間隔毎に、つまり、これら金型３２、３３による樹
脂層３の押圧箇所同士の間に、寸法Ｌ２の隙間があくよ
うに押圧するようになっている（図４参照）。In this concavo-convex molding apparatus 31, the respective metal molds 32 and 33 are brought close to a position having a gap of the dimension L1 (position where the concave portions are concentric circles) to press the resin layer 3. (See FIG. 5), the resin layer 3 is pressed by the molds 32 and 33 at predetermined intervals, that is, between the pressing points of the resin layer 3 by the molds 32 and 33. It presses so that there is a gap L2 (see FIG. 4).
【００２０】そして、この凹凸成形装置３１の金型３
２、３３によって樹脂層３が押圧されると、金型３２、
３３による樹脂層３の押圧箇所の樹脂が、金型３２、３
３の凹部３４、３４の外周へ押し出され、これにより、
金型３２、３３同士の隙間寸法Ｌ１と同一寸法の巾の線
状突起５、５…が対向位置に形成されるとともに、隣合
う押圧箇所同士の隙間寸法Ｌ２と同一寸法の巾の環状突
起４、４…が円周方向へ形成される。その後、これら線
状突起５、５…及び環状突起４、４…が形成された樹脂
層３が硬化されることにより、樹脂含浸繊維複合体製補
強筋１が完成される。Then, the mold 3 of the uneven forming apparatus 31
When the resin layer 3 is pressed by 2, 33, the mold 32,
The resin of the pressing portion of the resin layer 3 by 33 is the molds 32, 3
3 is pushed out to the outer periphery of the concave portions 34, 34, and by this,
The linear protrusions 5, 5 ... Having the same width as the gap dimension L1 between the molds 32, 33 are formed at the opposing positions, and the annular protrusion 4 having the same width as the gap dimension L2 between the adjacent pressing points. 4 are formed in the circumferential direction. After that, the resin layer 3 on which the linear protrusions 5, 5, ... And the annular protrusions 4, 4, ... Are formed is cured to complete the resin-impregnated fiber composite reinforcing bar 1.
【００２１】以上、説明したように、上記樹脂含浸繊維
複合体製補強筋の製造方法によれば、極めて容易に、長
手方向へ間隔をあけて複数の環状突起４、４…が形成さ
れ、かつ、これら環状突起４、４…間にて、長手方向へ
沿って線状突起５、５…が形成されて、これら環状突起
４、４…及び線状突起５、５…によってコンクリートと
の食い付き性が高められた樹脂含浸繊維複合体製補強筋
１を製造することができる。As described above, according to the method for manufacturing a reinforcing bar made of a resin-impregnated fiber composite, a plurality of annular projections 4, 4, ... Are formed very easily at intervals in the longitudinal direction, and , Linear protrusions 5, 5 ... Are formed along the longitudinal direction between the annular protrusions 4, 4, ..., and the annular protrusions 4, 4, ... And the linear protrusions 5, 5 ,. It is possible to manufacture the resin-impregnated fiber composite reinforcing bar 1 having improved properties.
【００２２】また、繊維強化棒材２の外周に被覆した樹
脂層３に、環状突起４、４…及び線状突起５、５…から
なる凹凸を形成するものであるので、繊維硬化棒材２を
押圧して強制的に凹凸を形成する従来方式によって製造
された補強筋と比較して、強化繊維へ無理な力を加えて
しまいこの強化繊維を切断したり、配向を乱したりして
強度を低下させてしまうようなことのない、高強度な補
強筋を製造することができる。また、繊維強化棒材２の
バインダーとして用いる樹脂に対して相溶性を有する樹
脂によって繊維強化棒材２の外周を被覆して樹脂層３を
形成するものであるので、繊維強化棒材２と凹凸を有す
る樹脂層３とを高強度にて結合させることができる。Further, since the resin layer 3 covering the outer periphery of the fiber reinforced rod 2 is provided with irregularities composed of the annular protrusions 4, 4, ... And the linear protrusions 5, 5 ,. Compared with the reinforcing bar manufactured by the conventional method that presses to forcibly form irregularities, it applies excessive force to the reinforcing fiber and cuts this reinforcing fiber, disturbing the orientation and strengthening. It is possible to manufacture a high-strength reinforcing bar without lowering the strength. Further, since the resin layer 3 is formed by coating the outer periphery of the fiber reinforced rod 2 with a resin that is compatible with the resin used as the binder of the fiber reinforced rod 2, the fiber reinforced rod 2 and the unevenness are formed. It is possible to bond the resin layer 3 having the
【００２３】そして、この樹脂含浸繊維複合体製補強筋
の製造方法によって製造された補強筋１によれば、長手
方向へ間隔をあけて形成された複数の環状突起４、４…
によって、コンクリートとの長手方向の食い付き性を向
上させることができるとともに、長手方向へ沿って形成
された線状突起５、５…によって、コンクリートとの円
周方向の食い付き性も向上させることができる。したが
って、この補強筋１をコンクリートへ配筋した際に、こ
の補強筋１の滑り抜けを確実に防止することができる。
そして、この補強筋１が配設されたコンクリート構造物
によれば、補強筋１が強化繊維と樹脂とによって形成さ
れているので、軽量化が図れるとともに防錆性を向上さ
せることができ、さらに、鋼製のものと比較して磁性に
影響を与えることがなく、例えば、リニアモータカー等
の軌道のコンクリート構造物に用いて好適である。According to the reinforcing bar 1 manufactured by the method for manufacturing the resin-impregnated fiber composite reinforcing bar, a plurality of annular projections 4, 4, ... Formed at intervals in the longitudinal direction.
Can improve the biting property in the longitudinal direction with the concrete, and can also improve the biting property in the circumferential direction with the concrete due to the linear projections 5, 5, ... Formed along the longitudinal direction. You can Therefore, when this reinforcing bar 1 is laid in concrete, slip-through of this reinforcing bar 1 can be reliably prevented.
Further, according to the concrete structure in which the reinforcing bar 1 is arranged, since the reinforcing bar 1 is formed of the reinforcing fiber and the resin, it is possible to reduce the weight and improve the rust preventive property. Since it does not affect the magnetism as compared with steel, it is suitable for use in concrete structures for tracks such as linear motor cars.
【００２４】なお、上記実施例の加熱成形装置１２、ク
ロスヘッド１３、凹凸成形装置３１等の具体的な構成及
び構造は、実施例に限定されることはない。ここで、凹
凸成形装置３１として用いる金型としては、図６に示す
ように、断面円弧状の溝部４１を有する複数の押圧部４
２、４２…が円周方向へ所定寸法Ｌ２の隙間をあけて形
成された押圧歯車４３を用いても良い。即ち、この押圧
歯車４３を上下に、互いに近接した状態に配置させて、
これら押圧歯車４３同士の間へ、樹脂層３が被覆された
繊維強化棒材２を引き込んだ状態にて、この繊維強化棒
材２を引っ張りながら、前記押圧歯車４３を、繊維強化
棒材２の引っ張り方向へ回動させることにより、前記金
型３２、３３による環状突起４、４…及び線状突起５、
５…の成形と同様の凹凸を樹脂層３に形成することがで
きる。The specific configurations and structures of the heat molding apparatus 12, the cross head 13, the uneven molding apparatus 31 and the like of the above embodiment are not limited to the embodiments. Here, as a mold used as the concavo-convex molding apparatus 31, as shown in FIG. 6, a plurality of pressing portions 4 having groove portions 41 having an arc-shaped cross section are provided.
It is also possible to use a pressing gear 43 in which 2, 42, ... Are formed with a gap of a predetermined dimension L2 in the circumferential direction. That is, by arranging the pressing gears 43 vertically and closely to each other,
While the fiber reinforced rod 2 covered with the resin layer 3 is drawn between the pressing gears 43, the pressing gear 43 is pulled to the fiber reinforced rod 2 while pulling the fiber reinforced rod 2. By rotating in the pulling direction, the annular protrusions 4, 4 ...
The resin layer 3 can be formed with irregularities similar to those of molding 5 ...
【００２５】また、上記実施例では、強化繊維を一体化
させるバインダーとして、熱硬化性の樹脂を用いたが、
熱硬化性の樹脂の代わりに、熱可塑性の樹脂を用いる場
合は、樹脂層３に用いる樹脂として、熱可塑性の樹脂と
相溶性を有する樹脂を用いるのは勿論である。なおま
た、バインダーあるいは樹脂層３の樹脂として用いる例
えばナイロン等の樹脂は、重合の際に、湿気を嫌うた
め、繊維強化棒材２の成形あるいは樹脂層３の被覆を、
空気との遮断下において行なうことが好ましい。また、
この繊維強化棒材２の成形方法としては、上記実施例に
限定されることなく、強化繊維を、溶融樹脂中にデッピ
ングした後に、引き抜き型へ通して棒状に成形するよう
にしても良い。Further, in the above embodiment, the thermosetting resin is used as the binder for integrating the reinforcing fibers.
When a thermoplastic resin is used instead of the thermosetting resin, it goes without saying that a resin compatible with the thermoplastic resin is used as the resin used for the resin layer 3. In addition, since a resin such as nylon used as the binder or the resin of the resin layer 3 does not like moisture during the polymerization, the fiber-reinforced rod 2 is molded or the resin layer 3 is coated.
It is preferable to carry out under the interruption of air. Also,
The method for molding the fiber-reinforced rod material 2 is not limited to the above-mentioned embodiment, and the reinforcing fiber may be dipped in the molten resin and then passed through a drawing die to be molded into a rod shape.
【００２６】[0026]
【発明の効果】以上、説明したように、本発明の樹脂含
浸繊維複合体製補強筋及びその製造方法によれば、下記
の効果を得ることができる。第１の発明によれば、繊維
強化棒材の外周に被覆された凹凸によって、コンクリー
トとの食い付き性を確実に確保することができる。そし
て、この補強筋が配設されたコンクリート構造物によれ
ば、補強筋が強化繊維と樹脂とによって形成されている
ので、軽量化が図れるとともに防錆性を向上させること
ができ、さらに、鋼製のものと比較して磁性に影響を与
えることがなく、例えば、リニアモータカー等の軌道の
コンクリート構造物に用いて好適である。また、樹脂層
として、繊維強化棒材を構成する強化繊維のバインダー
として用いられる樹脂に対して相溶性を有する樹脂が用
いられているので、繊維強化棒材と樹脂層との確実な一
体化が図られているので、繊維強化棒材と樹脂層との分
離を確実に防止することができる。As described above, according to the reinforcing fiber made of the resin-impregnated fiber composite and the method for producing the same of the present invention, the following effects can be obtained. According to the first aspect of the present invention, it is possible to reliably secure the biting property with the concrete due to the irregularities coated on the outer periphery of the fiber-reinforced rod. Further, according to the concrete structure in which the reinforcing bar is arranged, since the reinforcing bar is formed by the reinforcing fiber and the resin, it is possible to reduce the weight and improve the rust preventive property. It does not affect the magnetism as compared with the manufactured one, and is suitable for use, for example, in a concrete structure of a track such as a linear motor car. Further, as the resin layer, a resin having compatibility with the resin used as the binder of the reinforcing fibers constituting the fiber-reinforced rod is used, so that the fiber-reinforced rod and the resin layer can be reliably integrated. Since it is achieved, the fiber-reinforced rod and the resin layer can be reliably prevented from separating.
【００２７】また、第２の発明によれば、第１の発明に
加えてさらに、樹脂層に形成された凹凸が、長手方向へ
間隔をあけてかつ円周方向へ環状に形成された複数の環
状突起と、長手方向へ沿って形成された線状突起とから
なるものであるので、コンクリートとの長手方向の食い
付き性及びコンクリートとの円周方向の食い付き性をそ
れぞれ向上させることができる。Further, according to the second invention, in addition to the first invention, a plurality of irregularities formed on the resin layer are formed in a ring shape in the circumferential direction at intervals in the longitudinal direction. Since it is composed of an annular protrusion and a linear protrusion formed along the longitudinal direction, it is possible to improve the biting property in the longitudinal direction with concrete and the biting property in the circumferential direction with concrete, respectively. .
【００２８】さらに、第３の発明によれば、極めて容易
に、繊維強化棒材の外周に、凹凸を有する樹脂層が被覆
されて、コンクリートとの食い付き性が高められた補強
筋を製造することができる。また、繊維強化棒材の外周
に被覆する樹脂層に凹凸を形成するので、繊維硬化棒材
を押圧して強制的に凹凸を形成する従来方式と比較し
て、強化繊維へ無理な力を加えてしまいこの強化繊維を
切断したり配向を乱したりして強度を低下させることが
なく、極めて高強度な繊維強化棒材を有する補強筋を製
造することができる。また、繊維強化棒材のバインダー
として用いる樹脂と相溶性を有する樹脂によって繊維強
化棒材の外周を被覆して樹脂層を形成するので、繊維強
化棒材と樹脂層とを高強度にて結合させることができ
る。Further, according to the third aspect of the present invention, the reinforcing bar having a highly dented concrete can be manufactured very easily by coating the resin layer having irregularities on the outer periphery of the fiber reinforced rod. be able to. In addition, since unevenness is formed on the resin layer that covers the outer periphery of the fiber-reinforced rod material, an unreasonable force is applied to the reinforced fiber compared to the conventional method in which the fiber-cured rod material is pressed to form unevenness. It is possible to manufacture a reinforcing bar having an extremely high-strength fiber reinforced rod without cutting the reinforcing fiber and disturbing the orientation to lower the strength. Further, since the resin layer is formed by covering the outer periphery of the fiber reinforced rod with a resin compatible with the resin used as the binder of the fiber reinforced rod, the fiber reinforced rod and the resin layer are bonded with high strength. be able to.
【００２９】また、第４の発明によれば、第３の発明に
加えてさらに、長手方向へ間隔をあけてかつ円周方向へ
環状に形成された複数の環状突起と、長手方向へ沿って
形成された線状突起とからなる凹凸が樹脂層に形成され
て、コンクリートとの長手方向の食い付き性及びコンク
リートとの円周方向の食い付き性がそれぞれ向上された
補強筋を製造することができる。According to the fourth invention, in addition to the third invention, further, a plurality of annular projections formed in an annular shape in the circumferential direction at intervals in the longitudinal direction and along the longitudinal direction. It is possible to manufacture a reinforcing bar in which unevenness composed of the formed linear protrusions is formed in the resin layer, and the longitudinal biting property with concrete and the circumferential biting property with concrete are respectively improved. it can.
【図１】本発明の実施例の樹脂含浸繊維複合体製補強筋
の構造及び形状を説明する樹脂含浸繊維複合体製補強筋
の側面図である。FIG. 1 is a side view of a resin-impregnated fiber composite reinforcing bar for explaining the structure and shape of a resin-impregnated fiber composite reinforcing bar of an example of the present invention.
【図２】本発明の実施例の樹脂含浸繊維複合体製補強筋
の構成及び形状を説明する樹脂含浸繊維複合体製補強筋
の平面図である。FIG. 2 is a plan view of a resin-impregnated fiber-composite reinforcing bar for explaining the structure and shape of the resin-impregnated fiber-composite reinforcing bar according to an example of the present invention.
【図３】本発明の実施例の樹脂含浸繊維複合体製補強筋
の構成及び形状を説明する樹脂含浸繊維複合体製補強筋
の断面図である。FIG. 3 is a cross-sectional view of a resin-impregnated fiber composite reinforcing bar for explaining the structure and shape of the resin-impregnated fiber composite reinforcing bar of an example of the present invention.
【図４】本発明の実施例の樹脂含浸繊維複合体製補強筋
の製造方法を説明する樹脂含浸繊維複合体製補強筋及び
その周辺装置の概略側面図である。FIG. 4 is a schematic side view of a resin-impregnated fiber composite reinforcing bar and its peripheral device for explaining a method for manufacturing a resin-impregnated fiber composite reinforcing bar of an example of the present invention.
【図５】本発明の実施例の樹脂含浸繊維複合体製補強筋
の製造に用いられる凹凸成形装置の概略正面図である。FIG. 5 is a schematic front view of a concavo-convex molding apparatus used for manufacturing a resin-impregnated fiber composite reinforcing bar of an example of the present invention.
【図６】本発明の実施例の樹脂含浸繊維複合体製補強筋
の製造に用いられる他の凹凸成形装置を構成する押圧歯
車の斜視図である。FIG. 6 is a perspective view of a pressure gear that constitutes another concavo-convex molding apparatus used for manufacturing the resin-impregnated fiber composite reinforcing bar of the embodiment of the present invention.
【符号の説明】 １ 樹脂含浸繊維複合体製補強筋 ２ 繊維強化棒材 ３ 樹脂層 ４ 環状突起 ５ 線状突起 ３４ 凹部 ３２、３３ 金型[Explanation of Codes] 1 Reinforcing Fiber Composite Fiber Reinforcement 2 Fiber Reinforced Rod 3 Resin Layer 4 Annular Protrusion 5 Linear Protrusion 34 Recess 32, 33 Mold
Claims (4)
リート構造物の補強を行なう樹脂含浸繊維複合体製補強
筋であって、 樹脂含浸繊維を棒状に成形してなる繊維強化棒材の外周
に、前記樹脂含浸繊維に含浸されている樹脂に対して相
溶性を有する樹脂を被覆することにより樹脂層が形成さ
れ、該樹脂層の外周に、長手方向へ亙って凹凸が形成さ
れてなることを特徴とする樹脂含浸繊維複合体製補強
筋。1. A reinforcing bar made of a resin-impregnated fiber composite which is disposed inside concrete to reinforce a concrete structure, the reinforcing bar being formed by molding resin-impregnated fiber into a rod shape, A resin layer is formed by coating a resin having compatibility with the resin impregnated in the resin-impregnated fiber, and unevenness is formed on the outer periphery of the resin layer in the longitudinal direction. Reinforcing bar made of resin-impregnated fiber composite.
円周方向へ亙って形成された複数の環状突起と、長手方
向へ沿って形成された複数の線状突起とからなることを
特徴とする請求項１記載の樹脂含浸繊維複合体製補強
筋。2. The concavo-convex pattern comprises a plurality of annular projections formed at intervals in the longitudinal direction and circumferentially formed, and a plurality of linear projections formed along the longitudinal direction. The resin-impregnated fiber composite reinforcing bar according to claim 1.
繊維に含浸されている樹脂をバインダーとして一体化さ
せることにより繊維強化棒材を成形し、 該繊維強化棒材の外周に、前記樹脂含浸繊維に含浸され
ている樹脂に対して相溶性を有する未硬化状態の樹脂を
被覆して樹脂層を形成し、 該未硬化状態の樹脂層を部分的に押圧することにより凹
凸を形成し、 その後、前記樹脂層を硬化させることを特徴とする樹脂
含浸繊維複合体製補強筋の製造方法。3. A resin-impregnated fiber is bundled in a rod shape, and a resin impregnated in the resin-impregnated fiber is integrated as a binder to form a fiber-reinforced rod, and the resin is provided on the outer periphery of the fiber-reinforced rod. An uncured resin having compatibility with the resin impregnated in the impregnated fiber is coated to form a resin layer, and unevenness is formed by partially pressing the uncured resin layer, Then, the resin layer is cured, and a method for manufacturing a reinforcing bar made of a resin-impregnated fiber composite, the method comprising:
成されかつ円周の半分よりも僅かに短い周長を有する凹
部が形成された一対の金型を、前記樹脂強化棒材を介し
てかつ長手方向へ所定寸法の間隔をあけて互いに押し付
けて、未硬化状態の前記樹脂層の樹脂を金型の凹部から
はみ出させることにより、前記樹脂層に、前記金型同士
の間にて樹脂強化棒材の長手方向へ沿って突出された線
状突起と、前記金型の凹部による押圧箇所の間にて樹脂
強化棒材の円周方向へ亙って突出された環状突起とから
なる凹凸を形成することを特徴とする請求項３記載の樹
脂含浸繊維複合体製補強筋の製造方法。4. A pair of molds, which are formed in an arc shape of a concentric circle with the resin-reinforced rod material and in which a recess having a peripheral length slightly shorter than half of the circumference is formed, are provided with the resin-reinforced rod material interposed therebetween. And pressing each other in the longitudinal direction at intervals of a predetermined dimension so that the resin of the uncured resin layer protrudes from the concave portion of the mold, thereby allowing the resin layer to form a resin between the molds. Concavities and convexities consisting of linear protrusions protruding along the longitudinal direction of the reinforcing rod and annular protrusions protruding in the circumferential direction of the resin reinforcing rod between the pressing points by the recesses of the mold. The method for producing a reinforcing bar made of a resin-impregnated fiber composite according to claim 3, wherein the reinforcing bar is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5282781A JP2828574B2 (en) | 1993-11-11 | 1993-11-11 | Method of manufacturing reinforcing bars made of resin-impregnated fiber composite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5282781A JP2828574B2 (en) | 1993-11-11 | 1993-11-11 | Method of manufacturing reinforcing bars made of resin-impregnated fiber composite |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07139093A true JPH07139093A (en) | 1995-05-30 |
| JP2828574B2 JP2828574B2 (en) | 1998-11-25 |
Family
ID=17657001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5282781A Expired - Lifetime JP2828574B2 (en) | 1993-11-11 | 1993-11-11 | Method of manufacturing reinforcing bars made of resin-impregnated fiber composite |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2828574B2 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1170596A (en) * | 1997-06-20 | 1999-03-16 | Tonen Corp | Reinforced fiber reinforced bar, reinforcing method for concrete structure, and manufacture of reinforced fiber reinforced bar |
| JP2005511861A (en) * | 2001-12-12 | 2005-04-28 | コンポジット・レインフォースメント・システムズ・アーエス | Bar for reinforcement |
| CN102561596A (en) * | 2012-03-12 | 2012-07-11 | 张家港市威尔森环保设备有限公司 | Reinforcing rib |
| KR101248933B1 (en) * | 2009-12-31 | 2013-03-29 | 경남정보대학교 산학협력단 | Method and Substitude for reinforcing Rod |
| JP2018127807A (en) * | 2017-02-08 | 2018-08-16 | 三菱ケミカルインフラテック株式会社 | Reinforcement material for civil engineering and construction, its manufacturing method, concrete structure using the same, and concrete floor slab structure and its construction method and reinforcement method |
| WO2021112069A1 (en) * | 2019-12-02 | 2021-06-10 | 積水化学工業株式会社 | Continuous fiber reinforcement material, method for producing continuous fiber reinforcement material and concrete structure |
| KR102385913B1 (en) * | 2021-08-06 | 2022-04-12 | 주식회사 복합재자동화기술 | Composite FRP support Manufacturing Equipment |
| KR20220139185A (en) * | 2021-04-07 | 2022-10-14 | (주)오케이기술산업 | Ramen bridge using high-strength concrete and reinforcing fiber rods |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02248559A (en) * | 1989-03-20 | 1990-10-04 | Kumagai Gumi Co Ltd | Concrete reinforcing member and manufacture thereof |
-
1993
- 1993-11-11 JP JP5282781A patent/JP2828574B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02248559A (en) * | 1989-03-20 | 1990-10-04 | Kumagai Gumi Co Ltd | Concrete reinforcing member and manufacture thereof |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1170596A (en) * | 1997-06-20 | 1999-03-16 | Tonen Corp | Reinforced fiber reinforced bar, reinforcing method for concrete structure, and manufacture of reinforced fiber reinforced bar |
| JP2005511861A (en) * | 2001-12-12 | 2005-04-28 | コンポジット・レインフォースメント・システムズ・アーエス | Bar for reinforcement |
| KR101248933B1 (en) * | 2009-12-31 | 2013-03-29 | 경남정보대학교 산학협력단 | Method and Substitude for reinforcing Rod |
| CN102561596A (en) * | 2012-03-12 | 2012-07-11 | 张家港市威尔森环保设备有限公司 | Reinforcing rib |
| JP2018127807A (en) * | 2017-02-08 | 2018-08-16 | 三菱ケミカルインフラテック株式会社 | Reinforcement material for civil engineering and construction, its manufacturing method, concrete structure using the same, and concrete floor slab structure and its construction method and reinforcement method |
| WO2021112069A1 (en) * | 2019-12-02 | 2021-06-10 | 積水化学工業株式会社 | Continuous fiber reinforcement material, method for producing continuous fiber reinforcement material and concrete structure |
| KR20220139185A (en) * | 2021-04-07 | 2022-10-14 | (주)오케이기술산업 | Ramen bridge using high-strength concrete and reinforcing fiber rods |
| KR102385913B1 (en) * | 2021-08-06 | 2022-04-12 | 주식회사 복합재자동화기술 | Composite FRP support Manufacturing Equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2828574B2 (en) | 1998-11-25 |
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