JPH06297591A - Production of concrete reinforcing material made of frp - Google Patents
Production of concrete reinforcing material made of frpInfo
- Publication number
- JPH06297591A JPH06297591A JP5116565A JP11656593A JPH06297591A JP H06297591 A JPH06297591 A JP H06297591A JP 5116565 A JP5116565 A JP 5116565A JP 11656593 A JP11656593 A JP 11656593A JP H06297591 A JPH06297591 A JP H06297591A
- Authority
- JP
- Japan
- Prior art keywords
- cured
- semi
- flexible tube
- fiber bundle
- matrix resin
- 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
- 239000004567 concrete Substances 0.000 title claims abstract description 41
- 239000012779 reinforcing material Substances 0.000 title claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 title claims description 52
- 239000000835 fiber Substances 0.000 claims abstract description 76
- 229920005989 resin Polymers 0.000 claims abstract description 62
- 239000011347 resin Substances 0.000 claims abstract description 62
- 239000011159 matrix material Substances 0.000 claims abstract description 46
- 238000005452 bending Methods 0.000 claims abstract description 20
- 238000000465 moulding Methods 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims description 30
- 239000000853 adhesive Substances 0.000 claims description 21
- 230000001070 adhesive effect Effects 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 19
- 230000002787 reinforcement Effects 0.000 claims description 9
- 238000004804 winding Methods 0.000 claims description 7
- 239000000126 substance Substances 0.000 claims description 6
- 238000001723 curing Methods 0.000 claims 2
- 238000010438 heat treatment Methods 0.000 abstract description 14
- -1 polyethylene Polymers 0.000 abstract description 6
- 239000004698 Polyethylene Substances 0.000 abstract description 5
- 229920000573 polyethylene Polymers 0.000 abstract description 5
- 230000002708 enhancing effect Effects 0.000 abstract 2
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 239000004743 Polypropylene Substances 0.000 description 18
- 238000000576 coating method Methods 0.000 description 15
- 239000011248 coating agent Substances 0.000 description 13
- 239000002245 particle Substances 0.000 description 10
- 230000003387 muscular Effects 0.000 description 8
- 239000003822 epoxy resin Substances 0.000 description 7
- 229920000647 polyepoxide Polymers 0.000 description 7
- 230000003014 reinforcing effect Effects 0.000 description 7
- 239000004576 sand Substances 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 6
- 210000003205 muscle Anatomy 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 229920001187 thermosetting polymer Polymers 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000008187 granular material Substances 0.000 description 5
- 229920000049 Carbon (fiber) Polymers 0.000 description 4
- 239000004917 carbon fiber Substances 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 239000012783 reinforcing fiber Substances 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 235000015111 chews Nutrition 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000002274 desiccant Substances 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 229920006305 unsaturated polyester Polymers 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
- B29C70/52—Pultrusion, i.e. forming and compressing by continuously pulling through a die
- B29C70/521—Pultrusion, i.e. forming and compressing by continuously pulling through a die and impregnating the reinforcement before the die
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/06—Fibrous reinforcements only
- B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
- B29C70/16—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length
- B29C70/20—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length oriented in a single direction, e.g. roofing or other parallel fibres
- B29C70/205—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length oriented in a single direction, e.g. roofing or other parallel fibres the structure being shaped to form a three-dimensional configuration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/32—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core on a rotating mould, former or core
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Reinforcement Elements For Buildings (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、スターラップ筋、フー
プ筋等、折り曲げ加工を行ったFRP製コンクリート補
強材の製造方法、およびストレートのFRP製コンクリ
ート補強材の製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a FRP concrete reinforcing material such as a stirrup bar and a hoop reinforcing bar, and a method for manufacturing a straight FRP concrete reinforcing material.
【0002】[0002]
【従来の技術】従来、一般に、コンクリート補強材であ
るスターラップ筋、フープ筋、ストレート筋等には鋼材
が使用されている。従来の折り曲げ加工筋は、表面に凹
凸のある棒状の鋼材を切断し、必要な形状に曲げ加工し
てスターラップ筋等を一筋ずつ製作して、この折れ曲が
り鋼筋材を棒鋼材(ストレート筋)と組み立て、コンク
リートに埋設して鉄筋コンクリートとしている。しかし
ながら、近年川砂の減少のためにコンクリートの混合に
は海砂が用いられており、海砂には塩分などが含まれて
いるため、鉄筋コンクリートとして用いた場合、鋼材の
腐食が起きやすくなっている。鋼材の腐食が起きると建
築物のコンクリートのひび割れなどを招き、建築物の耐
久性を著しく低下させてしまうので、近年、腐食性の無
いFRP製のコンクリート補強筋が用いられるようにな
ってきた。2. Description of the Related Art Conventionally, steel materials have been generally used for stirrup reinforcements, hoop reinforcements, straight reinforcements, etc., which are concrete reinforcing materials. The conventional bending bar is made by cutting a bar-shaped steel material with irregularities on the surface and bending it into the required shape to produce stirrup bars one by one, and this bent steel bar is called a bar bar (straight bar). It is assembled and embedded in concrete to make reinforced concrete. However, in recent years, sea sand has been used for mixing concrete in order to reduce river sand, and since sea sand contains salt, etc., when used as reinforced concrete, corrosion of steel materials easily occurs. . Corrosion of steel material causes cracking of concrete in a building and remarkably lowers the durability of the building. Therefore, in recent years, a FRP concrete reinforcing bar having no corrosive property has been used.
【0003】FRP製の折り曲げ加工を行ったスターラ
ップ筋、フープ筋等の従来の製造方法は、たとえば、実
開昭63−162024号公報に以下のように示されて
いる。図14はその工程説明図であり、高強度低伸度繊
維の集束体30をレジンバス5を通してマトリックス樹
脂2を含浸させ、賦形ダイス31に通し、乾燥剤槽32
に通して粉末乾燥剤を塗布し、集束体30の全表面に別
の同材質の繊維または合成繊維を編組機33で被覆さ
せ、この状態の繊維束の数本を撚合機34により撚合体
とし、これをマンドレル36に巻き付け、加熱装置35
によりマトリックス樹脂を完全に硬化させ、マンドレル
36から外し、図15(a)に示すような成形品を得る
という方法である。また、前述の製造方法で、撚合体の
表面に別の同材質の繊維を所定ピッチで巻着したのち、
これをマンドレル36に巻き付け、加熱装置35により
マトリックス樹脂を完全に硬化させ、マンドレル36か
ら外して図15(b)に示すような成形品を得るという
方法もある。A conventional method of manufacturing a stirrup streak, a hoop streak, etc., which is made of FRP and is bent, is disclosed in Japanese Utility Model Laid-Open No. 63-162024 as follows. FIG. 14 is an explanatory view of the process, in which the bundle 30 of high-strength and low-elongation fibers is impregnated with the matrix resin 2 through the resin bath 5, passed through the shaping die 31, and the desiccant tank 32.
The powder desiccant is applied to the bundle 30 and the entire surface of the bundle 30 is covered with another fiber or synthetic fiber of the same material by the braiding machine 33, and a few of the fiber bundles in this state are twisted by the twisting machine 34. And wrap it around the mandrel 36, and
The matrix resin is completely cured by and is removed from the mandrel 36 to obtain a molded product as shown in FIG. 15 (a). Further, in the above-described manufacturing method, after winding another fiber of the same material on the surface of the twisted body at a predetermined pitch,
There is also a method in which this is wound around a mandrel 36, the matrix resin is completely cured by a heating device 35, and the mandrel 36 is removed to obtain a molded product as shown in FIG.
【0004】FRP製のストレート筋の製造方法として
は、繊維束にマトリックス樹脂2を含浸させ、金型によ
りマトリックス樹脂を加熱硬化させて棒状筋を得る。そ
の後、図16(a)に示すように、棒状筋に機械的切削
加工等により筋体40の表面に溝41を設けてコンクリ
ートとの結合が強固になるようにしている。 ま
た、実開昭62−140115号公報に示されているス
トレート筋では、繊維束に熱硬化性樹脂を含浸させ、金
型により熱硬化樹脂を加熱硬化させ棒状筋を得る。その
後、図16(b)に示すように棒状筋42に更に同材質
の繊維束43を所定のピッチで巻き付けた後、熱硬化性
樹脂を含浸し、加熱硬化させて凹凸を施し、ストレート
筋を製造している。As a method for producing an FRP straight streak, a fiber bundle is impregnated with the matrix resin 2 and the matrix resin is heated and cured by a mold to obtain a rod-shaped streak. After that, as shown in FIG. 16 (a), a groove 41 is provided on the surface of the muscular body 40 by mechanical cutting or the like on the rod-shaped muscle to strengthen the connection with the concrete. In the straight streak shown in Japanese Utility Model Laid-Open No. 62-140115, a fiber bundle is impregnated with a thermosetting resin, and the thermosetting resin is heat-cured by a mold to obtain a bar-shaped streak. After that, as shown in FIG. 16 (b), a fiber bundle 43 of the same material is further wound around the bar-shaped streaks 42 at a predetermined pitch, impregnated with a thermosetting resin, and heat-cured to make unevenness, and straight streaks are formed. Manufacturing.
【0005】[0005]
【発明が解決しようとする課題】従来の鋼材製のスター
ラップ筋、フープ筋等、折り曲げ加工を行ったコンクリ
ート補強筋の製造方法では、ストレート筋を切断し、一
筋ずつ折り曲げて製作しているので多くの手間と工数と
を要していた。また、従来のFRP製コンクリート補強
筋の製造方法としては、前述の実開昭63−16202
4号公報によれば、筋体の芯体となる繊維の機械的強度
を低下させないために別の繊維で表面積を増加させ、コ
ンクリートとの付着力の良いものとしているが、表面積
増加のために繊維束に別の繊維を被覆させ、その繊維束
を撚合体にしたり、更にその撚合体の表面に繊維を帯状
に巻き付けたりして、多数の工程を経て折れ曲がり筋を
製造している。この製法では工程が前述のように多数に
わたり多大の工数がかかる。In the conventional method for manufacturing a concrete reinforcing bar that is bent, such as a stirrup bar and a hoop bar made of steel, straight reinforcing bars are cut and bent one by one. It took a lot of time and effort. In addition, as a conventional method for manufacturing a FRP concrete reinforcing bar, the above-mentioned Japanese Utility Model Publication No. 63-16202 is used.
According to Japanese Patent Laid-Open No. 4 publication, the surface area of another fiber is increased so as not to lower the mechanical strength of the fiber serving as the core body of the muscular body, and the adhesive force to concrete is improved. BACKGROUND ART A fiber bundle is coated with another fiber, the fiber bundle is formed into a twisted body, and the fiber is wound around the surface of the twisted body in a band shape to manufacture a bent streak through a number of steps. This manufacturing method involves a large number of steps as described above and requires a great number of man-hours.
【0006】FRP製コンクリート補強筋の表面に凹凸
を設ける場合、切削加工による場合には図16(c)に
示すように切削時に外周の繊維44を切断してしまうた
め、筋体の機械的強度が低下してしまう。また、実開昭
62−140115号公報に示されている凹凸を有する
FRP製コンクリート補強筋は、芯体を成形し、補強繊
維の連続繊維束を螺旋状に巻き付け、熱硬化性樹脂を含
浸し、加熱して樹脂を硬化させて成形するため、繊維自
体の強度低下は無いが、製造工程が多くかかり、設備も
多くなるという点で不利である。When unevenness is provided on the surface of the FRP concrete reinforcing bar, the fiber 44 on the outer periphery is cut during cutting as shown in FIG. Will decrease. Further, the concrete reinforcing bar made of FRP having unevenness disclosed in Japanese Utility Model Laid-Open No. 62-140115 has a core body molded, and a continuous fiber bundle of reinforcing fibers is spirally wound and impregnated with a thermosetting resin. Since the resin is heated and cured to be molded, the strength of the fiber itself does not decrease, but it is disadvantageous in that it requires many manufacturing steps and requires many facilities.
【0007】本発明は上記の問題点に着目してなされた
もので、折れ曲がり筋およびストレート筋の製造におい
て、製造工程が多数にわたらず、連続的に製造でき、さ
らにコンクリート補強筋とコンクリートとの付着力を得
るための凹凸部を、強度の低下を招くことなく設けるこ
とのできるFRP製コンクリート補強材の製造方法を提
供することを目的としている。The present invention has been made by paying attention to the above-mentioned problems, and in the production of bent and straight reinforcements, continuous production can be performed without a large number of production steps, and concrete reinforcement and concrete can be produced. It is an object of the present invention to provide a method for producing a FRP concrete reinforcing material, in which uneven portions for obtaining adhesive force can be provided without causing a decrease in strength.
【0008】[0008]
【課題を解決するための手段】上記目的達成のため、本
発明にかかるFRP製コンクリート補強材の製造方法の
第1の発明においては、マトリックス樹脂を含浸させた
繊維束を、前記マトリックス樹脂が半硬化状態になるよ
うにし、前記半硬化繊維束をフレキシブルチューブによ
り被覆し、成形用の歯車により前記フレキシブルチュー
ブの表面に凹凸を施し、折り曲げ成形用のマンドレルに
巻き付けて成形、硬化させたことを特徴としており、第
2の発明においては、マトリックス樹脂を含浸させた繊
維束を、前記マトリックス樹脂が半硬化状態になるよう
にし、前記半硬化繊維束をフレキシブルチューブにより
被覆し、成形用の刻印により前記フレキシブルチューブ
の表面に凹凸を施し、折り曲げ成形用のマンドレルに巻
き付けて成形、硬化させたことを特徴としており、第3
の発明においては、マトリックス樹脂を含浸させた繊維
束を、前記マトリックス樹脂が半硬化状態になるように
し、前記半硬化繊維束をフレキシブルチューブにより被
覆し、テープ状の被覆材を前記フレキシブルチューブに
食い込むように巻装して前記フレキシブルチューブの表
面に凹凸を形成し、折り曲げ成形用のマンドレルに巻き
付けて成形、硬化させたことを特徴としており、第4の
発明においてはマトリックス樹脂を含浸させた繊維束
を、前記マトリックス樹脂が半硬化状態になるように
し、前記半硬化繊維束をフレキシブルチューブにより被
覆し、表面に凹凸を設けたマンドレルと、該マンドレル
に対向して設けられた成形用の歯車とを備えた折り曲げ
用のマンドレルに、前記フレキシブルチューブの表面に
凹凸を形成しながら巻き付けて成形、硬化させたことを
特徴としており、第5の発明においては、マトリックス
樹脂を含浸させた繊維束を、前記マトリックス樹脂が半
硬化状態になるようにし、前記半硬化繊維束をフレキシ
フルチューブにより被覆し、成形用の歯車により前記フ
レキシブルチューブの表面に凹凸を成形し、硬化させた
ことを特徴としており、第6の発明においては、マトリ
ックス樹脂を含浸させた繊維束を、前記マトリックス樹
脂が半硬化状態になるようにし、前記半硬化繊維束をフ
レキシブルチューブにより被覆し、成形用の刻印により
前記フレキシブルチューブの表面に凹凸を形成し、硬化
させたことを特徴としており、第7の発明においては、
マトリックス樹脂を含浸させた繊維束を、前記マトリッ
クス樹脂が半硬化状態になるようにし、前記半硬化繊維
束をフレキシブルチューブにより被覆し、テープ状の被
覆材を前記フレキシブルチューブに食い込むように巻装
して該フレキシブルチューブの表面に凹凸を形成し、硬
化させたことを特徴としており、第8の発明において
は、マトリックス樹脂を含浸させた繊維束を、前記マト
リックス樹脂が半硬化状態になるようにし、前記半硬化
繊維束の表面に粒状物質を付着させて硬化させたことを
特徴としており、第9の考案においては、マトリックス
樹脂を含浸させた繊維束を、前記マトリックス樹脂が半
硬化状態になるようにし、前記半硬化繊維束の表面に接
着材を塗布し、前記接着材を塗布した箇所に粒状物質を
付着させて硬化させたことを特徴としている。To achieve the above object, in the first invention of the method for producing a concrete reinforcing material made of FRP according to the present invention, the fiber bundle impregnated with the matrix resin is partially mixed with the matrix resin. In a cured state, the semi-cured fiber bundle is covered with a flexible tube, the surface of the flexible tube is made uneven by a molding gear, and the flexible tube is wound around a mandrel for bending and molded and cured. In the second invention, the fiber bundle impregnated with the matrix resin is set so that the matrix resin is in a semi-cured state, the semi-cured fiber bundle is covered with a flexible tube, and the fiber bundle is impregnated for molding. Unevenness is applied to the surface of the flexible tube, and the flexible tube is wrapped around a mandrel for bending and molded, and hardened. It was are characterized by a third
In the invention, the fiber bundle impregnated with the matrix resin is made to have the matrix resin in a semi-cured state, the semi-cured fiber bundle is covered with a flexible tube, and a tape-shaped covering material is cut into the flexible tube. Is wound around the flexible tube to form irregularities on the surface of the flexible tube, and the flexible tube is wound around a mandrel for bending and molded and cured. In the fourth invention, a fiber bundle impregnated with a matrix resin is used. The matrix resin is in a semi-cured state, the semi-cured fiber bundle is covered with a flexible tube, a mandrel provided with irregularities on the surface, and a molding gear provided opposite the mandrel. Winding is performed on the bending mandrel with the uneven surface formed on the flexible tube. The fifth aspect of the present invention is characterized in that the fiber bundle impregnated with the matrix resin is made to be in a semi-cured state, and the semi-cured fiber bundle is subjected to flexi-flux. It is characterized in that the flexible tube is covered with a tube, and an unevenness is formed on the surface of the flexible tube by a gear for molding and cured. In the sixth invention, a fiber bundle impregnated with a matrix resin is formed into the matrix resin. In a semi-cured state, the semi-cured fiber bundle is covered with a flexible tube, and unevenness is formed on the surface of the flexible tube by a marking for molding, and the flexible tube is cured. In
A fiber bundle impregnated with a matrix resin is set so that the matrix resin is in a semi-cured state, the semi-cured fiber bundle is covered with a flexible tube, and a tape-shaped covering material is wound so as to bite into the flexible tube. In the eighth aspect of the present invention, the matrix resin is impregnated so that the matrix resin is in a semi-cured state. The semi-cured fiber bundle is characterized in that a granular substance is adhered to the surface of the semi-cured fiber bundle to be cured. In the ninth invention, the fiber bundle impregnated with the matrix resin is placed in a semi-cured state. Then, an adhesive is applied to the surface of the semi-cured fiber bundle, and a granular substance is adhered to the place where the adhesive is applied and cured. It is characterized in that.
【0009】[0009]
【作用】上記製造方法においては、繊維に含浸させたマ
トリックス樹脂が半硬化状態の時にフレキシブルチュー
ブを被覆させて硬化させているため、繊維束とフレキシ
ブルチューブが一体となっており、ストレート形態、曲
げ形態等自由に形状を設定できる。また、歯車、刻印、
被覆物、粒状物質等で凹凸を形成しているため、繊維が
切断されることはなく、凹凸の形状を変えることにより
種々のコンクリートとの付着力が得られ、さらには、マ
ンドレルの形状を変更することにより種々の形状の折れ
曲がり筋を得ることができる。In the above manufacturing method, since the flexible tube is covered and cured when the matrix resin impregnated in the fiber is in the semi-cured state, the fiber bundle and the flexible tube are integrated, and the straight shape and bending The shape can be set freely. Also, gears, stamps,
Since the concavities and convexities are formed by coatings, granular materials, etc., the fibers are not cut, and the adhesive strength with various concretes can be obtained by changing the concavo-convex shape, and the shape of the mandrel can be changed. By doing so, bending lines of various shapes can be obtained.
【0010】[0010]
【実施例】以下に本発明にかかるFRP製コンクリート
補強材の製造方法の実施例について、図面を参照して詳
述する。図1は第1実施例の工程説明図であり、繊維束
であるカーボン繊維束1を、マトリックス樹脂であるエ
ポキシ樹脂2の入ったレジンバス5を通過させてエポキ
シ樹脂を含浸させ、加熱金型6を通して半硬化状態にな
るように加熱し、この半硬化繊維束にフレキシブルチュ
ーブ被覆機7によりフレキシブルチューブであるポリエ
チレン(PP)チューブ3を被覆させ、成形用の歯車8
によりPPチューブ3の表面にコンクリートとの付着力
を向上させるための凹凸を形成し、冷却機12によりP
Pチューブ3の表面を冷却し、引き取り機13によって
引き取り、PPチューブごと折り曲げ成形用のマンドレ
ル11に巻き付けて硬化させ、マンドレル11から外し
て折れ曲がり筋を得る。この製造方法により製造された
折れ曲がり筋とコンクリートとの付着力は、凹凸部の深
さを0.2mm とした場合、凹部の比表面積が40%のとき
108kg/cm2を得ている。EXAMPLES Examples of the method for producing a FRP concrete reinforcing material according to the present invention will be described in detail below with reference to the drawings. FIG. 1 is a process explanatory view of the first embodiment, in which a carbon fiber bundle 1 which is a fiber bundle is passed through a resin bath 5 containing an epoxy resin 2 which is a matrix resin so as to be impregnated with an epoxy resin and a heating die 6 And heat it to a semi-cured state, and the flexible tube coating machine 7 coats the polyethylene (PP) tube 3 which is a flexible tube on this semi-cured fiber bundle, and a gear 8 for molding.
To form unevenness on the surface of the PP tube 3 for improving the adhesive force with the concrete, and the cooler 12 P
The surface of the P tube 3 is cooled, taken up by a take-up machine 13, wrapped around a PP tube with a mandrel 11 for folding and forming, and hardened, and removed from the mandrel 11 to obtain a bent line. The adhesive force between the bent bar and the concrete produced by this production method is 108 kg / cm 2 when the specific surface area of the concave portion is 40% when the depth of the irregular portion is 0.2 mm.
【0011】図2は第2実施例の工程説明図であり、P
Pチューブを被覆したのち、第1実施例の歯車の代わり
に成形用の刻印9によりPPチューブ3の表面に凹凸を
形成し、マンドレル11に巻き付けて硬化させ、折れ曲
がり筋を製造する。他の部分は第1実施例と同一なので
説明は省略する。以下、第4実施例まで同様である。FIG. 2 is a process explanatory view of the second embodiment, P
After coating the P tube, unevenness is formed on the surface of the PP tube 3 by the marking 9 for molding instead of the gear of the first embodiment, and the PP tube 3 is wound around the mandrel 11 and hardened to manufacture a bent line. Since the other parts are the same as those in the first embodiment, the description thereof is omitted. Hereinafter, the same applies to the fourth embodiment.
【0012】図3は第3実施例の工程説明図であり、P
Pチューブ3を被覆したのち、被覆機10により被覆材
である布テープ4をPPチューブ3に食い込むように巻
き付け、凹凸を形成したのちマンドレル11に巻き付け
て硬化させ、折れ曲がり筋を製造する。FIG. 3 is a process explanatory view of the third embodiment, P
After the P tube 3 is coated, the cloth tape 4 as a coating material is wound by the coating machine 10 so as to bite into the PP tube 3, and after irregularities are formed, it is wound around the mandrel 11 and cured to produce a bent line.
【0013】図4は第4実施例の工程説明図であり、P
Pチューブ3を被覆したのち、表面に凹凸を設けたマン
ドレル14と、それに対向する成形用の歯車8とを備え
た折り曲げ成形用のマンドレル11に、PPチューブ3
の表面に凹凸を形成しながら巻き付けて硬化し、折れ曲
がり筋を製造する。FIG. 4 is a process explanatory view of the fourth embodiment, where P
After the P tube 3 is covered, the bending mandrel 11 including the mandrel 14 having irregularities on the surface and the molding gear 8 facing the mandrel 14 is provided on the PP tube 3
It is wound and cured while forming irregularities on the surface of, to manufacture bent streaks.
【0014】図5〜図7はストレート筋の工程説明図で
ある。図5は第5実施例の工程説明図であり、第1実施
例と同様に、PPチューブ3の表面に成形用の歯車8に
より凹凸を形成し、冷却機12によりPPチューブ3の
表面を冷却し、このPPチューブごと硬化させてストレ
ート筋を得る。5 to 7 are process explanatory views of the straight muscle. FIG. 5 is a process explanatory view of the fifth embodiment. As in the first embodiment, the surface of the PP tube 3 is made uneven by the gear 8 for molding, and the cooler 12 cools the surface of the PP tube 3. Then, the whole PP tube is cured to obtain a straight muscle.
【0015】図6は第6実施例の工程説明図であり、第
2実施例と同様に、PPチューブ3の表面に成形用の刻
印9により凹凸を形成し、PPチューブごと冷却、硬化
させてストレート筋を得る。FIG. 6 is a process explanatory view of the sixth embodiment. As in the second embodiment, unevenness is formed on the surface of the PP tube 3 by means of the marking 9 for molding, and the PP tube is cooled and cured. Get straight muscles.
【0016】図7は第7実施例の工程説明図であり、第
3実施例と同様に、布テープ4をPPチューブ3の表面
に食い込むように巻き付け、凹凸を形成したのち冷却、
硬化してストレート筋を得る。FIG. 7 is a process explanatory view of the seventh embodiment. Similar to the third embodiment, the cloth tape 4 is wound around the surface of the PP tube 3 so as to bite into it to form irregularities and then cooled.
Hardens to get straight muscle.
【0017】図8は半硬化強化繊維束にフレキシブルチ
ューブであるPPチューブ3を連続的に被覆するための
フレキシブルチューブ被覆機7の一例を示す断面図であ
る。図9(a)、(b)は本発明の製造方法により製造
された筋体図である。FIG. 8 is a sectional view showing an example of a flexible tube coating machine 7 for continuously coating the semi-cured reinforcing fiber bundle with the PP tube 3 which is a flexible tube. 9 (a) and 9 (b) are muscular bodies manufactured by the manufacturing method of the present invention.
【0018】図10は第8実施例の工程説明図であり、
カーボン繊維束1をエポキシ樹脂2の入ったレジンバス
5を通過させ、エポキシ樹脂2を含浸させたのち加熱金
型6を通してエポキシ樹脂2が半硬化状態になるように
加熱し、この半硬化繊維束の表面全体に粒状物質である
砂、ガラス等の粒子、もしくは接着剤付きの砂、ガラス
等の粒子を砂付け機21により付着させ、加熱機22に
より加熱し、引き取り機13によって引き取り、硬化さ
せることによりコンクリートとの付着力を向上したスト
レート筋が得られる。なお、上記半硬化品を加熱機22
で加熱せずに引き取り機13で引き取り、折り曲げ成形
用のマンドレルに巻き付け、オーブン等で硬化させるこ
とにより、フープ筋、スターラップ筋等の折れ曲がり筋
を製造することもできる。FIG. 10 is a process explanatory view of the eighth embodiment,
The carbon fiber bundle 1 is passed through a resin bath 5 containing an epoxy resin 2, impregnated with the epoxy resin 2, and then heated through a heating mold 6 so that the epoxy resin 2 is in a semi-cured state. Particles such as sand, glass particles, or particles with an adhesive, such as sand or glass particles, are attached to the entire surface by a sanding machine 21, heated by a heating machine 22, taken by a take-up machine 13, and cured. As a result, straight streaks with improved adhesion to concrete can be obtained. In addition, the above semi-cured product is heated by a heater 22
Bending lines such as hoop lines and stirrup lines can also be manufactured by picking them up with a take-up machine 13 without heating at 1, winding them around a bending mandrel, and curing them in an oven or the like.
【0019】図11は第9実施例の工程説明図であり、
加熱金型6を通った半硬化繊維束の表面全体に接着剤塗
り機23により接着剤を塗布し、砂付け機21により
砂、ガラス等の粒子を付着させる。このとき、接着剤塗
り機23により帯状、螺旋状あるいは環状に接着剤を塗
布すると、この部分だけ粒子の付着した半硬化品が得ら
れ、これによりコンクリートとの任意の付着力が得られ
る。また、付着力を低下させることなしに接着剤の使用
量を減らすという効果も期待できる。以後は接着剤のみ
硬化させるために、加熱機22で加熱し、引き取り機1
3で引き取り、折り曲げ成形用のマンドレルに巻き付け
て折れ曲がり筋を製造する。なお、上記粒子付着半硬化
品を折り曲げ成形用のマンドルに巻かずに、引き取り機
13で引き取り、硬化させることにより、ストレート筋
を製造することもできる。又、上記ストレート筋の製造
において、粒子付着硬化品を加熱機22で半硬化品を加
熱硬化させ、取り引き機13で引き取り、ストレート筋
を得ることもできる。FIG. 11 is a process explanatory view of the ninth embodiment,
An adhesive is applied to the entire surface of the semi-cured fiber bundle that has passed through the heating die 6 by an adhesive applicator 23, and particles such as sand and glass are attached by the sander 21. At this time, when the adhesive is applied in a band shape, a spiral shape, or a ring shape by the adhesive applicator 23, a semi-cured product having particles adhered only to this portion is obtained, whereby an arbitrary adhesion force with concrete can be obtained. Further, the effect of reducing the amount of the adhesive used without lowering the adhesive strength can be expected. After that, in order to cure only the adhesive, the adhesive is heated by the heater 22 and the take-up machine 1
It is taken up in step 3 and wound around a mandrel for bending and forming a bending streak. It is also possible to manufacture a straight streak by winding the particle-attached semi-cured product around a mandrel for bending and forming it, and taking it with a take-up machine 13 and curing it. Further, in the production of the straight streak, it is also possible to obtain a straight streak by heating the particle-adhered cured product with a heating machine 22 to a semi-cured product and taking it with a trading machine 13.
【0020】図12は第10実施例の工程説明図であ
り、加熱金型6を通った硬化ロッド(繊維束)を、以下
第9実施例と同様にして粒子の付着した硬化品を製造
し、加熱機22、引き取り機13を通してストレート筋
を得る。FIG. 12 is a process explanatory view of the tenth embodiment, in which the cured rod (fiber bundle) which has passed through the heating die 6 is manufactured in the same manner as in the ninth embodiment to produce a cured product having particles attached thereto. A straight line is obtained through the heating device 22 and the take-up device 13.
【0021】図17は第11実施例の工程説明図であ
り、カーボン繊維束1をアトリックス樹脂であるポリエ
ステル樹脂の入ったレジンバス5を通過させ、金型6を
通し、冷却機により、繊維束を硬化させ、この硬化繊維
束にフレキシブルチューズ被履機7によりフレキシブル
チューブであるPPチューブ3を被履させ、以下は、第
1実施例と同様にして、PPチューズ3の表面に凹凸を
形成しながら巻き付けて硬化させ、折れ曲がり筋を製造
する。FIG. 17 is a process explanatory view of the eleventh embodiment, in which the carbon fiber bundle 1 is passed through a resin bath 5 containing a polyester resin which is an attrix resin, a mold 6 is passed through, and a fiber bundle is fed by a cooler. Then, the cured fiber bundle is covered with the PP tube 3, which is a flexible tube, by the flexible chews wearing machine 7, and then, in the same manner as in the first embodiment, irregularities are formed on the surface of the PP chews 3. While wrapping and curing, manufacture the bending streak.
【0022】図13の(a)、(b)は第8〜第10実
施例に示した製造方法によって得られるストレート筋の
外観図であり、(a)は環状に粒状物質20を付着した
もの、(b)は全表面に粒状物質20を付着したもので
ある。(c)環状に粒状物質20を付着させた折れ曲が
り筋の外観図である。FIGS. 13 (a) and 13 (b) are external views of straight streaks obtained by the manufacturing methods shown in the eighth to tenth embodiments, and FIG. 13 (a) shows a granular substance 20 attached in an annular shape. , (B) are those in which the particulate matter 20 is attached to the entire surface. (C) It is an external view of a bent line in which the granular material 20 is attached in an annular shape.
【0023】上記第8〜第10実施例において、付着さ
せる粒子の大きさ、密度を変化させることによってコン
クリートとの付着力を変化させることができる。上記3
つの実施例において、直径8mmのストレートロッドに、
直径0.075mm、 直径0.5mmの粒子を付着させ、
表面積当たりのコンクリート付着力を測定した結果、下
記のような値を得た。 In the above eighth to tenth embodiments, it is possible to change the adhesive force with concrete by changing the size and density of the particles to be adhered. 3 above
In one embodiment, on a straight rod with a diameter of 8 mm,
Particles with a diameter of 0.075 mm and a diameter of 0.5 mm are attached,
As a result of measuring the concrete adhesion force per surface area, the following values were obtained.
【0024】上記筋体を構成する材料としては、繊維と
して、カーボン繊維、ガラス繊維等の無機繊維や、アラ
ミド繊維等の有機繊維が用いられ、マトリックス樹脂と
しては、エポキシ樹脂、不飽和ポリエステル、フェノー
ル樹脂等の熱硬化性樹脂、ナイロン、ポリエステル等の
熱可塑性樹脂が用いられる。ここで使用される熱硬化性
樹脂が常温硬化性である場合は、前述してきた加熱等の
作業は除かれる。 さらに、フレキシブルチューブとし
ては、ポリエチレン、ポリプロピレン、ナイロン、ビニ
ール、シリコン等の可とう性のものであれば総て用いる
ことができ、被覆物については、紐状、テープ状の形態
をなすもので、素材は特に指定されること無く用いるこ
とができる。要するに、繊維、マトリックス樹脂、フレ
キシブルチューブ、被覆物は共に、FRP材を構成でき
るものなら全ての材料を用いることができる。
ま
た、凹凸部を形成するための歯車や刻印、被覆物、粒状
物等の形状および歯車等の位置などは筋体の形状により
自由に変更できる。Inorganic fibers such as carbon fibers and glass fibers, and organic fibers such as aramid fibers are used as the material of the muscles, and the matrix resin includes epoxy resin, unsaturated polyester, and phenol. A thermosetting resin such as resin or a thermoplastic resin such as nylon or polyester is used. When the thermosetting resin used here is a room temperature curable resin, the above-mentioned operations such as heating are omitted. Further, as the flexible tube, any flexible material such as polyethylene, polypropylene, nylon, vinyl, and silicon can be used, and the covering material has a string-like or tape-like shape. The material can be used without any particular designation. In short, as the fiber, the matrix resin, the flexible tube, and the coating, any material can be used as long as it can form the FRP material.
Further, the shapes of gears, markings, coatings, granules, etc. for forming the uneven portions and the positions of the gears, etc. can be freely changed depending on the shape of the muscular body.
【0025】[0025]
【発明の効果】以上詳述したごとく、本発明は繊維束に
含浸させたマトリックス樹脂を半硬化状態になるように
し、フレキシブルチューブにより被覆し、歯車、刻印あ
るいはテープ状の被覆剤によりフレキシブルチューブの
表面に凹凸を成形、硬化させ、あるいは、前記半硬化繊
維束の表面に砂、ガラス等の粒状物質を付着させたのち
硬化させ、ストレート筋あるいは折れ曲がり筋を製造す
るようにした。従来は表面積を増加させるために繊維束
に別の繊維を被履させ、その繊維束を燃合体にしたり、
さらに表面に繊維を巻き付けるなど多数の工数を要して
いた。しかし、本発明に係る方法ではフレキシブルチュ
ーブの被履、粒状物資の付着など単純な構成の追加によ
り、繊維の表面積を増加させることが出来、工数を削減
すること出来る。FRP補強筋の強化繊維を切断するこ
とがないので引張強度が高く、フレキシブルチューブ表
面の凹凸の形状や粒状物質の付着量あるいは粒子の大き
さ、密度を変えることによりコンクリートとの付着力を
自由に変更することができ、また、マンドレルの形状を
変更することにより種々の形状の折れ曲がり筋が、少な
い工程で連続的に製造可能なFRP製コンクリート補強
材の製造方法が得られる。As described in detail above, according to the present invention, the matrix resin impregnated in the fiber bundle is made to be in a semi-cured state and covered with a flexible tube, and the flexible tube is coated with a coating material in the form of gears, stamps or tapes. Unevenness was formed and cured on the surface, or a granular substance such as sand and glass was adhered to the surface of the semi-cured fiber bundle and then cured to produce straight streaks or bent streaks. Conventionally, in order to increase the surface area, another fiber is put on the fiber bundle, and the fiber bundle is burnt,
Furthermore, many man-hours such as winding a fiber around the surface were required. However, in the method according to the present invention, the surface area of the fiber can be increased and the number of steps can be reduced by adding a simple structure such as wearing the flexible tube and adhering the granular material. Since it does not cut the reinforcing fibers of the FRP reinforcement, it has high tensile strength, and the adhesive force with concrete can be freely changed by changing the shape of the irregularities on the flexible tube surface, the amount of particulate matter attached, or the size and density of particles. By changing the shape of the mandrel, it is possible to obtain a method for producing a concrete reinforcing material made of FRP which can continuously produce bent lines of various shapes in a small number of steps.
【図1】本発明の製造方法の第1実施例の工程説明図で
ある。FIG. 1 is a process explanatory view of a first embodiment of a manufacturing method of the present invention.
【図2】本発明の製造方法の第2実施例の工程説明図で
ある。FIG. 2 is a process explanatory view of the second embodiment of the manufacturing method of the present invention.
【図3】本発明の製造方法の第3実施例の工程説明図で
ある。FIG. 3 is a process explanatory view of the third embodiment of the manufacturing method of the present invention.
【図4】本発明の製造方法の第4実施例の工程説明図で
ある。FIG. 4 is a process explanatory view of the fourth embodiment of the manufacturing method of the present invention.
【図5】本発明の製造方法の第5実施例の工程説明図で
ある。FIG. 5 is a process explanatory view of the fifth embodiment of the manufacturing method of the present invention.
【図6】本発明の製造方法の第6実施例の工程説明図で
ある。FIG. 6 is a process explanatory view of the sixth embodiment of the manufacturing method of the present invention.
【図7】本発明の製造方法の第7実施例の工程説明図で
ある。FIG. 7 is a process explanatory view of a seventh embodiment of the manufacturing method of the present invention.
【図8】本発明の製造方法に用いるフレキシブルチュー
ブ被覆機の一例を示す断面図である。FIG. 8 is a cross-sectional view showing an example of a flexible tube coating machine used in the manufacturing method of the present invention.
【図9】本発明の製造方法により製造された筋体図であ
る。FIG. 9 is a muscular body diagram manufactured by the manufacturing method of the present invention.
【図10】本発明の製造方法の第8実施例の工程説明図
である。FIG. 10 is a process explanatory view of the eighth embodiment of the manufacturing method of the present invention.
【図11】本発明の製造方法の第9実施例の工程説明図
である。FIG. 11 is a process explanatory view of the ninth embodiment of the manufacturing method of the present invention.
【図12】本発明の製造方法の第10実施例の工程説明
図である。FIG. 12 is a process explanatory view of the tenth embodiment of the manufacturing method of the present invention.
【図13】本発明の第8〜第10実施例の製造方法によ
り製造された筋体図である。FIG. 13 is a muscular body diagram manufactured by a manufacturing method according to eighth to tenth embodiments of the present invention.
【図14】従来の製造方法の工程説明図である。FIG. 14 is a process explanatory diagram of a conventional manufacturing method.
【図15】従来の製造方法により製造された筋体図であ
る。FIG. 15 is a muscular body diagram manufactured by a conventional manufacturing method.
【図16】従来の製造方法により表面に凹凸を形成した
筋体図である。FIG. 16 is a muscular body diagram in which irregularities are formed on the surface by a conventional manufacturing method.
1 強化繊維 22 加熱
機 2 エポキシ樹脂 23 接着
剤塗り機 3 PPチューブ 4 被覆物 5 レジンバス 6 加熱金型 7 フレキシブルチューブ被覆機 8 歯車 9 刻印 10 被覆機 11 マンドレル 12 冷却機 13 引き取り機 20 粒状物質 21 砂付け機DESCRIPTION OF SYMBOLS 1 Reinforcing fiber 22 Heating machine 2 Epoxy resin 23 Adhesive coating machine 3 PP tube 4 Coating 5 Resin bath 6 Heating die 7 Flexible tube coating machine 8 Gear 9 Marking 10 Coating machine 11 Mandrel 12 Cooling machine 13 Take-up machine 20 Granular material 21 Sanding machine
Claims (9)
を、前記マトリックス樹脂が半硬化状態になるように
し、前記半硬化繊維束をフレキシブルチューブにより被
覆し、成形用の歯車により前記フレキシブルチューブの
表面に凹凸を形成し、折り曲げ成形用のマンドレルに巻
き付けて成形、硬化させたことを特徴とするFRP製コ
ンクリート補強材の製造方法。1. A fiber bundle impregnated with a matrix resin is made so that the matrix resin is in a semi-cured state, the semi-cured fiber bundle is covered with a flexible tube, and the surface of the flexible tube is covered with a gear for molding. A method for producing a concrete reinforcing material made of FRP, which comprises forming unevenness, winding the mandrel for bending and molding, and curing.
を、前記マトリックス樹脂が半硬化状態になるように
し、前記半硬化繊維束をフレキシブルチューブにより被
覆し、成形用の刻印により前記フレキシブルチューブの
表面に凹凸を形成し、折り曲げ成形用のマンドレルに巻
き付けて成形、硬化させたことを特徴とするFRP製コ
ンクリート補強材の製造方法。2. A fiber bundle impregnated with a matrix resin is set so that the matrix resin is in a semi-cured state, the semi-cured fiber bundle is covered with a flexible tube, and the surface of the flexible tube is marked with a marking for molding. A method for producing a concrete reinforcing material made of FRP, which comprises forming unevenness, winding the mandrel for bending and molding, and curing.
を、前記マトリックス樹脂が半硬化状態になるように
し、前記半硬化繊維束をフレキシブルチューブにより被
覆し、テープ状の被覆材を前記フレキシブルチューブに
食い込むように巻装して前記フレキシブルチューブの表
面に凹凸を形成し、折り曲げ成形用のマンドレルに巻き
付けて成形、硬化させたことを特徴とするFRP製コン
クリート補強材の製造方法。3. A fiber bundle impregnated with a matrix resin is set so that the matrix resin is in a semi-cured state, the semi-cured fiber bundle is covered with a flexible tube, and a tape-shaped covering material is cut into the flexible tube. The method for producing a concrete reinforcing material made of FRP, characterized in that the flexible tube is wound in such a manner that irregularities are formed on the surface of the flexible tube, and the flexible tube is wound around a mandrel for bending and molded and cured.
を、前記マトリックス樹脂が半硬化状態になるように
し、前記半硬化繊維束をフレキシブルチューブにより被
覆し、表面に凹凸を設けたマンドレルと、該マンドレル
に対向して設けられた成形用の歯車とを備えた折り曲げ
成形用のマンドレルに、前記フレキシブルチューブの表
面に凹凸を形成しながら巻き付けて成形、硬化させたこ
とを特徴とするFRP製コンクリート補強材の製造方
法。4. A mandrel having a fiber bundle impregnated with a matrix resin, wherein the matrix resin is in a semi-cured state, the semi-cured fiber bundle is covered with a flexible tube, and the surface has irregularities, and the mandrel. FRP concrete reinforcing material, characterized in that it is wound around a mandrel for bending and forming, which is provided with a gear for forming provided opposite to, while forming irregularities on the surface of the flexible tube, and is molded and cured. Manufacturing method.
を、前記マトリックス樹脂が半硬化状態になるように
し、前記半硬化繊維束をフレキシブルチューブにより被
覆し、成形用の歯車により前記フレキシブルチューブの
表面に凹凸を形成し、硬化させたことを特徴とするFR
P製コンクリート補強材の製造方法。5. A fiber bundle impregnated with a matrix resin is set so that the matrix resin is in a semi-cured state, the semi-cured fiber bundle is covered with a flexible tube, and the surface of the flexible tube is covered with a gear for molding. FR characterized by having irregularities formed and cured
Method for manufacturing P concrete reinforcement.
を、前記マトリックス樹脂が半硬化状態になるように
し、前記半硬化繊維束をフレキシブルチューブにより被
覆し、成形用の刻印により前記フレキシブルチューブの
表面に凹凸を形成し、硬化させたことを特徴とするFR
P製コンクリート補強材の製造方法。6. A fiber bundle impregnated with a matrix resin is set so that the matrix resin is in a semi-cured state, the semi-cured fiber bundle is covered with a flexible tube, and the surface of the flexible tube is marked with a marking for molding. FR characterized by having irregularities formed and cured
Method for manufacturing P concrete reinforcement.
を、前記マトリックス樹脂が半硬化状態になるように
し、前記半硬化繊維束をフレキシブルチューブにより被
覆し、テープ状の被覆材を前記フレキシブルチューブに
食い込むように巻装して該フレキシブルチューブの表面
に凹凸を形成し、硬化させたことを特徴とするFRP製
コンクリート補強材の製造方法。7. A fiber bundle impregnated with a matrix resin is set so that the matrix resin is in a semi-cured state, the semi-cured fiber bundle is covered with a flexible tube, and a tape-shaped covering material is cut into the flexible tube. A method for producing a concrete reinforcing material made of FRP, characterized in that the flexible tube is wound in such a manner that irregularities are formed on the surface of the flexible tube and then cured.
を、前記マトリックス樹脂が半硬化状態になるように
し、前記半硬化繊維束の表面に粒状物質を付着させて硬
化させたことを特徴とするFRP製コンクリート補強材
の製造方法。8. An FRP characterized in that a fiber bundle impregnated with a matrix resin is cured so that the matrix resin is in a semi-cured state, and a particulate substance is attached to the surface of the semi-cured fiber bundle. Manufacturing method of concrete reinforcement.
を、前記マトリックス樹脂が半硬化状態になるように
し、前記半硬化繊維束の表面に接着材を塗布し、前記接
着材を塗布した箇所に粒状物質を付着させて硬化させた
ことを特徴とするFRP製コンクリート補強材の製造方
法。9. A fiber bundle impregnated with a matrix resin is set so that the matrix resin is in a semi-cured state, an adhesive is applied to the surface of the semi-cured fiber bundle, and the portion where the adhesive is applied is granular. A method for producing an FRP concrete reinforcing material, characterized in that a substance is adhered and cured.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5116565A JPH06297591A (en) | 1993-04-20 | 1993-04-20 | Production of concrete reinforcing material made of frp |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5116565A JPH06297591A (en) | 1993-04-20 | 1993-04-20 | Production of concrete reinforcing material made of frp |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH06297591A true JPH06297591A (en) | 1994-10-25 |
Family
ID=14690260
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5116565A Pending JPH06297591A (en) | 1993-04-20 | 1993-04-20 | Production of concrete reinforcing material made of frp |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH06297591A (en) |
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JP2015528403A (en) * | 2012-08-31 | 2015-09-28 | フィレプ レバー テクノロジー ゲゼルシャフト ミット ベシュレンクテル ハフツング | Method for manufacturing a reinforcing member made of fiber-reinforced plastic and reinforcing member manufactured according to this method |
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WO2021033086A1 (en) * | 2019-08-16 | 2021-02-25 | Pultron Composites Limited | Apparatus and process for producing pultruded frp rebar |
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-
1993
- 1993-04-20 JP JP5116565A patent/JPH06297591A/en active Pending
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WO2006001702A1 (en) * | 2004-06-23 | 2006-01-05 | Exel Oyj | Method and equipment for the manufacturing of reinforcing bars of composite material |
JP2014509964A (en) * | 2011-02-14 | 2014-04-24 | ブランドストロム, ランデル | Fiber reinforced reinforcing bars containing molded parts and concrete panels containing molded reinforcing bar parts |
EP2675607A4 (en) * | 2011-02-14 | 2016-10-19 | Randel Brandstrom | Fiber reinforced rebar with shaped sections and a concrete panel including the shaped rebar sections |
JP2015528403A (en) * | 2012-08-31 | 2015-09-28 | フィレプ レバー テクノロジー ゲゼルシャフト ミット ベシュレンクテル ハフツング | Method for manufacturing a reinforcing member made of fiber-reinforced plastic and reinforcing member manufactured according to this method |
JP2015161123A (en) * | 2014-02-27 | 2015-09-07 | 公益財団法人鉄道総合技術研究所 | Cell assembly, construction method of cell assembly and construction structure of cell assembly |
JP2016186132A (en) * | 2015-03-27 | 2016-10-27 | 東レ・デュポン株式会社 | Polyparaphenylene terephthalamide fiber composite body |
CN107366388A (en) * | 2017-07-26 | 2017-11-21 | 哈尔滨工业大学 | A kind of closed square-section FRP stirrups and preparation method thereof |
WO2021033086A1 (en) * | 2019-08-16 | 2021-02-25 | Pultron Composites Limited | Apparatus and process for producing pultruded frp rebar |
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CN110821047A (en) * | 2019-12-13 | 2020-02-21 | 南通装配式建筑与智能结构研究院 | Composite steel bar FRP stirrup and preparation method thereof |
CN113043627A (en) * | 2019-12-26 | 2021-06-29 | 中国科学院宁波材料技术与工程研究所 | Multifunctional prepreg and sheet molding integrated machine |
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