JP2015150721A - Orientation device, method of producing fiber-reinforced concrete member or fiber-reinforced mortar member, and fiber-reinforced concrete member or fiber-reinforced mortar member - Google Patents
Orientation device, method of producing fiber-reinforced concrete member or fiber-reinforced mortar member, and fiber-reinforced concrete member or fiber-reinforced mortar member Download PDFInfo
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Abstract
Description
本発明は、配向装置、繊維補強コンクリート部材あるいは繊維補強モルタル部材の製造方法及び繊維補強コンクリート部材あるいは繊維補強モルタル部材に関するものである。 The present invention relates to an orientation device, a fiber-reinforced concrete member or a method for producing a fiber-reinforced mortar member, and a fiber-reinforced concrete member or a fiber-reinforced mortar member.
従来、コンクリート部材あるいはモルタル部材の強度を向上させるために、コンクリートあるいはモルタル内に補強繊維を混入した、繊維補強コンクリートあるいは繊維補強モルタルが研究されてきた。繊維補強コンクリートあるいは繊維補強モルタルを硬化させて得られる繊維補強コンクリート部材等の補強繊維は次のような傾向で配向している。
（１）打設時におけるコンクリートの流速方向と平行。
（２）表面においては、表面と平行。
（３）型枠付近においては、型枠と平行。
Conventionally, in order to improve the strength of concrete members or mortar members, fiber reinforced concrete or fiber reinforced mortar in which reinforcing fibers are mixed in concrete or mortar has been studied. Reinforcing fibers such as fiber reinforced concrete members obtained by curing fiber reinforced concrete or fiber reinforced mortar are oriented with the following tendency.
(1) Parallel to the flow rate direction of concrete during placement.
(2) On the surface, parallel to the surface.
(3) Near the formwork, it is parallel to the formwork.
繊維補強コンクリート部材等の引張強度は補強繊維の長軸方向に強くなるため、補強繊維が繊維補強コンクリート等の引張応力発生方向に配向していないと、補強繊維の引張補強効果が十分に活かされているとはいえない。
そして、普通に打設を行うと、補強繊維が引張応力発生方向以外に配向して、必要な引張強度を確保できない可能性があった。
Since the tensile strength of fiber reinforced concrete members, etc., increases in the long axis direction of the reinforcing fibers, if the reinforcing fibers are not oriented in the tensile stress generation direction of the fiber reinforced concrete, the tensile reinforcing effect of the reinforcing fibers is fully utilized. I cannot say that.
And when placing normally, there is a possibility that the reinforcing fiber is oriented in a direction other than the tensile stress generation direction and the required tensile strength cannot be secured.
補強繊維を繊維補強コンクリート部材等の引張応力発生方向に配向させる方法としては、例えば、図９に示す特許文献１に記載された方法が知られている。
この方法では、間隔をあけて整列した上下方向に長い複数の配向棒３０１と、これら配向棒３０１を固定する固定板３０２と、この固定板３０２から上方に延在する把持部３０３とからなる繊維配向治具を、横長の型枠３０４内に打設された硬化前の繊維補強モルタルの内部に、配向棒３０１を型枠３０４の幅方向に並んだ状態で上から挿入する。
そして、型枠３０４の上面に配置されるガイド板３０５には型枠３０４の横方向に沿って案内路３０６を設け、この繊維配向治具を案内路３０６に沿って矢印のように横方向に移動させて、その移動方向に補強繊維を配向させている。
As a method for orienting reinforcing fibers in the direction of tensile stress generation of a fiber reinforced concrete member or the like, for example, a method described in Patent Document 1 shown in FIG. 9 is known.
In this method, fibers comprising a plurality of vertically oriented alignment bars 301 aligned at intervals, a fixing plate 302 for fixing the alignment bars 301, and a gripping portion 303 extending upward from the fixing plate 302. The alignment jig 301 is inserted from above into the fiber reinforced mortar before being hardened placed in the horizontally long mold 304 in a state where the alignment rod 301 is aligned in the width direction of the mold 304.
A guide plate 305 disposed on the upper surface of the mold 304 is provided with a guide path 306 along the lateral direction of the mold 304, and the fiber orientation jig is disposed along the guide path 306 in the lateral direction as indicated by an arrow. The reinforcing fiber is oriented in the moving direction by moving.
柱や壁等は縦方向に引張強度を必要とする部材であるが、図９に示した特許文献１の方法は、配向棒３０１を横方向に移動しているので、縦方向に補強繊維を配向することができず、柱や壁等に用いることができない。 Columns, walls, and the like are members that require tensile strength in the vertical direction, but the method of Patent Document 1 shown in FIG. 9 moves the orientation rod 301 in the horizontal direction. It cannot be oriented and cannot be used for columns or walls.
本発明は、上記のような問題に鑑みなされたものであって、発明が解決しようとする課題は、柱や壁等の縦方向に引張強度を必要とする部材に適用可能な、補強繊維を配向したい方向へ配向した繊維補強コンクリート部材あるいは繊維補強モルタル部材を製造できる配向装置又は繊維補強コンクリート部材あるいは繊維補強モルタル部材の製造方法を提供することにある。 The present invention has been made in view of the above problems, and the problem to be solved by the present invention is a reinforcing fiber that can be applied to members that require tensile strength in the longitudinal direction, such as columns and walls. An object of the present invention is to provide an orientation device or a method for producing a fiber reinforced concrete member or fiber reinforced mortar member, which can produce a fiber reinforced concrete member or fiber reinforced mortar member oriented in a desired direction.
本願の第１発明は、硬化前の繊維補強コンクリートあるいは繊維補強モルタル内の補強繊維を所望の方向に配向させるための配向装置であって、枠部材と、前記枠部材に取り付けた力伝達部材を備えることを特徴とする配向装置である。
本願の第１発明によって、柱や壁等の縦方向に引張強度を必要とする部材を強化することができる。
本願の第２発明は、前記力伝達部材は棒状体であることを特徴とする第１発明の配向装置である。
本願の第２発明は、力伝達部材を棒状体とすることによって、力伝達部材により配向装置を硬化前の繊維補強コンクリートあるいは繊維補強モルタルに押し込むことができるため、往復移動させることが容易となる。そして、往復移動を繰り返すことによって、配向性を高めることができる。
本願の第３発明は、前記力伝達部材は紐状体であることを特徴とする第１発明の配向装置である。
本願の第３発明は、力伝達部材を紐状体とすることによって、輸送時などに紐状体を巻くなどして、配向装置をコンパクトにすることができる。また、紐状体は後述の実施例３のように抑え治具などを支点として曲げた状態で力を伝達することができるため、狭い場所での使用が可能となる。
本願の第４発明は、硬化前のコンクリートあるいはモルタルに補強繊維を混入した繊維補強コンクリートあるいは繊維補強モルタル内において、第１発明の配向装置における前記枠部材を、前記力伝達部材を介して前記力伝達部材の軸方向に移動させることによって、前記補強繊維を、前記枠部材を移動させる方向へ配向させることを特徴とする繊維補強コンクリート部材あるいは繊維補強モルタル部材の製造方法である。
本願の第４発明によって、柱や壁等の縦方向に所要の引張強度を有する部材を製造することができる。
本願の第５発明は、第４発明の方法により製造されて硬化した、繊維補強コンクリート部材あるいは繊維補強モルタル部材である。
1st invention of this application is the orientation apparatus for orientating the reinforced fiber in the fiber reinforced concrete or fiber reinforced mortar before hardening in a desired direction, Comprising: A frame member and the force transmission member attached to the said frame member It is an orientation device characterized by comprising.
According to the first invention of the present application, members that require tensile strength in the longitudinal direction such as columns and walls can be strengthened.
A second invention of the present application is the orientation device according to the first invention, wherein the force transmission member is a rod-shaped body.
In the second invention of the present application, since the force transmission member is a rod-like body, the orientation device can be pushed into the fiber-reinforced concrete or fiber-reinforced mortar before curing by the force transmission member, and therefore it is easy to reciprocate. . And orientation can be improved by repeating reciprocation.
A third invention of the present application is the orientation device according to the first invention, wherein the force transmission member is a string-like body.
According to the third invention of the present application, the alignment device can be made compact by winding the string-like body during transportation or the like by using the force transmitting member as the string-like body. Further, since the string-like body can transmit the force in a state where the string-like body is bent with a holding jig or the like as a fulcrum as in Example 3 described later, it can be used in a narrow place.
According to a fourth aspect of the present invention, in the fiber reinforced concrete or fiber reinforced mortar in which the reinforcing fiber is mixed into the concrete or mortar before curing, the frame member in the orientation device of the first aspect is connected to the force through the force transmission member. In the manufacturing method of the fiber reinforced concrete member or the fiber reinforced mortar member, the reinforcing fiber is oriented in the moving direction of the frame member by moving the transmitting member in the axial direction.
According to the fourth invention of the present application, a member having a required tensile strength in the longitudinal direction such as a column or a wall can be manufactured.
The fifth invention of the present application is a fiber-reinforced concrete member or fiber-reinforced mortar member manufactured and cured by the method of the fourth invention.
本発明では、硬化前の繊維補強コンクリートあるいは繊維補強モルタル内で、力伝達部材と枠部材を備えた配向装置を、前記力伝達部材の軸方向に移動させることにより、引張応力発生方向の強度を高めた繊維補強コンクリートあるいは繊維補強モルタルを提供することができる。 In the present invention, in the fiber reinforced concrete or fiber reinforced mortar before curing, the orientation device including the force transmission member and the frame member is moved in the axial direction of the force transmission member, thereby increasing the strength in the tensile stress generation direction. Enhanced fiber reinforced concrete or fiber reinforced mortar can be provided.
以下に実施例を記載する。以下においては補強繊維を混入した繊維補強コンクリートで記載したが、繊維補強モルタルでも同様である。補強繊維としては、コンクリート、モルタルの補強のために使用されるものであれば特に限定されない。例えば、鋼繊維等の金属繊維や炭素繊維、ポリオレフィン繊維やアラミド繊維などの有機繊維、ガラスファイバーなど、種々のものが用いられる。 Examples are described below. In the following, fiber reinforced concrete mixed with reinforcing fibers is described, but the same applies to fiber reinforced mortar. The reinforcing fiber is not particularly limited as long as it is used for reinforcing concrete and mortar. For example, various materials such as metal fibers such as steel fibers, carbon fibers, organic fibers such as polyolefin fibers and aramid fibers, and glass fibers are used.
図１は、本発明の一実施例である、力伝達部材が棒状体である配向装置の斜視図である。１は配向装置、２ａは棒材（横方向）、２ｂは棒材（奥行方向）、３は棒材（縦方向）、４は棒状体、１０は枠部材を示す。枠部材１０は棒材（横方向）２ａ、棒材（奥行方向）２ｂと棒材（縦方向）３により形成されており、直方体形状である。棒材（横方向）２ａと棒材（奥行方向）２ｂは力伝達部材である棒状体４の軸方向に対して直角方向に延在し、棒材（縦方向）３は棒状体４の軸方向に延在する。
図２は、型枠内の硬化前の繊維補強コンクリートに配向装置１が入っている状態を表す。５は型枠、６は繊維補強コンクリート、７は繊維補強コンクリートの上面を示す。
この例では、棒状体４により力を伝達して、繊維補強コンクリート６中で枠部材１０を図中の矢印のように棒状体４の軸方向である上下に移動させることにより、補強繊維を上下方向に配向することができる。繊維補強コンクリート６を打設したのちにその上方から棒状体４により枠部材１０を押し入れ、さらに上方に引き抜いてもよく、上下動を複数回行ってもよい。複数回行うと、より配向性が高くなり効果が大きい。
また、枠部材１０を型枠内５に設置してから繊維補強コンクリート６等を打設して、その後に配向装置１を動かしてもよい。
さらに、棒状体４を枠部材１０から引き抜き可能に取り付けると、配向させた後に引き抜くことにより、枠部材１０を鉄筋としてコンクリート等の中に残すこともできる。
FIG. 1 is a perspective view of an alignment apparatus according to an embodiment of the present invention, in which a force transmission member is a rod-shaped body. 1 is an orientation device, 2a is a bar (horizontal direction), 2b is a bar (depth direction), 3 is a bar (longitudinal direction), 4 is a rod-like body, and 10 is a frame member. The frame member 10 is formed of a bar (horizontal direction) 2a, a bar (depth direction) 2b, and a bar (vertical direction) 3, and has a rectangular parallelepiped shape. The bar (lateral direction) 2a and the bar (depth direction) 2b extend in a direction perpendicular to the axial direction of the rod-shaped body 4 which is a force transmission member, and the bar (vertical direction) 3 is the axis of the rod-shaped body 4. Extend in the direction.
FIG. 2 shows a state in which the orientation device 1 is contained in the fiber-reinforced concrete before curing in the formwork. 5 is a formwork, 6 is fiber reinforced concrete, and 7 is an upper surface of the fiber reinforced concrete.
In this example, force is transmitted by the rod-shaped body 4 and the frame member 10 is moved up and down in the axial direction of the rod-shaped body 4 as indicated by arrows in the fiber reinforced concrete 6 to move the reinforcing fibers up and down. Can be oriented in the direction. After the fiber reinforced concrete 6 is placed, the frame member 10 may be pushed in from the upper side by the rod-like body 4 and pulled out further upward, or the vertical movement may be performed a plurality of times. When it is performed a plurality of times, the orientation becomes higher and the effect is great.
Alternatively, the orientation member 1 may be moved after placing the frame member 10 in the mold 5 and then placing the fiber reinforced concrete 6 or the like.
Furthermore, when the rod-like body 4 is attached so as to be able to be pulled out from the frame member 10, the frame member 10 can be left as a reinforcing bar in concrete or the like by being pulled out after being oriented.
棒状体４と枠部材１０を備えた配向装置１の一例の写真を図３に示す。写真のように斜め方向の鉄筋などを用いて棒状体４を補強しつつ枠部材１０に固定するとより好ましい。また、棒材（縦方向）３の表面に写真のように凹凸を設けたものを使用すると、後述の縦の棒材による配向がより起こりやすい。 A photograph of an example of the orientation device 1 provided with the rod-like body 4 and the frame member 10 is shown in FIG. It is more preferable that the rod-like body 4 is fixed to the frame member 10 while reinforcing the rod-like body 4 using an oblique reinforcing bar as shown in the photograph. Moreover, when the surface of the bar (longitudinal) 3 is provided with irregularities as shown in the photograph, orientation due to the vertical bar described later is more likely to occur.
図４は枠部材１０の棒材（横方向）２ａ又は棒材（奥行方向）２ｂが移動した時の補強繊維の動きを表す。２１は棒材（横方向）２ａ又は棒材（奥行方向）２ｂの移動を示す矢印、１００、１１０、１３０は補強繊維、１１１は補強繊維の動きを示す矢印、６は繊維補強コンクリートである。なお、図１において、棒材（横方向）２ａ、棒材（奥行方向）２ｂの断面は四角いが、本説明では断面が丸い棒材で説明する。
図４において、棒材（横方向）２ａ、棒材（奥行方向）２ｂは矢印２１に示すように移動するが、補強繊維１００は棒材（横方向）２ａ、棒材（奥行方向）２ｂがその近傍を通過する前であり、配向していない。
棒材（横方向）２ａ、棒材（奥行方向）２ｂが近傍を通過する場所では、補強繊維１１０は棒材（横方向）２ａ、棒材（奥行方向）２ｂに当接し、点線の位置から縦方向の実線の位置へ矢印１１１のように回転する。
FIG. 4 shows the movement of the reinforcing fiber when the bar (lateral direction) 2a or the bar (depth direction) 2b of the frame member 10 is moved. 21 is an arrow indicating movement of the bar (lateral direction) 2a or bar (depth direction) 2b, 100, 110 and 130 are reinforcing fibers, 111 is an arrow indicating the movement of the reinforcing fibers, and 6 is fiber reinforced concrete. In FIG. 1, the cross section of the bar (lateral direction) 2a and the bar (depth direction) 2b is square, but in this description, the cross section is described as a round bar.
In FIG. 4, the bar (lateral direction) 2 a and the bar (depth direction) 2 b move as indicated by an arrow 21, but the reinforcing fiber 100 is composed of the bar (lateral direction) 2 a and the bar (depth direction) 2 b. Before passing the vicinity, it is not oriented.
In the place where the bar (lateral direction) 2a and the bar (depth direction) 2b pass in the vicinity, the reinforcing fiber 110 comes into contact with the bar (horizontal direction) 2a and the bar (depth direction) 2b, from the position of the dotted line. It rotates as indicated by arrow 111 to the position of the solid line in the vertical direction.
図５は枠部材１０の棒材（縦方向）３が移動した時の補強繊維の動きを表す。３１は棒材（縦方向）３の移動を示す矢印、１００、１２０、１３０は補強繊維、１２１は補強繊維の動きを示す矢印、６は繊維補強コンクリート、６０１は棒材（縦方向）３の周囲における繊維補強コンクリート６の動きを示す矢印である。
図５において、棒材（縦方向）３は矢印３１に示すように移動するが、補強繊維１００は棒材（縦方向）３がその近傍を通過する前であり、配向していない。
棒材（縦方向）３周辺の繊維補強コンクリート６は、棒材（縦方向）３の矢印３１方向への移動に伴い矢印６０１に示すように上方に移動する。これにより補強繊維１２０は、点線の位置から矢印１２１のように回転し、実線で示したように縦方向に配向する。
通過した後の場所では、補強繊維が縦方向に配向したまま繊維補強コンクリート６が棒材（縦方向）３のあった位置に集まってくることにより、補強繊維１３０のような縦方向の配向となる。
FIG. 5 shows the movement of the reinforcing fiber when the bar (longitudinal direction) 3 of the frame member 10 is moved. 31 is an arrow indicating the movement of the bar (longitudinal direction) 3, 100, 120 and 130 are reinforcing fibers, 121 is an arrow indicating the movement of the reinforcing fibers, 6 is fiber reinforced concrete, 601 is the bar (vertical direction) 3 It is an arrow which shows the motion of the fiber reinforced concrete 6 in the circumference | surroundings.
In FIG. 5, the bar (longitudinal direction) 3 moves as indicated by an arrow 31, but the reinforcing fiber 100 is not oriented before the bar (vertical direction) 3 passes through the vicinity thereof.
The fiber reinforced concrete 6 around the bar (longitudinal direction) 3 moves upward as indicated by an arrow 601 as the bar (longitudinal) 3 moves in the direction of arrow 31. As a result, the reinforcing fiber 120 rotates from the position of the dotted line as indicated by an arrow 121 and is oriented in the vertical direction as indicated by the solid line.
In the place after passing, the fiber reinforced concrete 6 gathers at the position where the bar material (longitudinal direction) 3 remains while the reinforcing fibers are oriented in the longitudinal direction, so that the longitudinal orientation as in the reinforcing fibers 130 is reduced. Become.
次に、力伝達部材が紐状体である場合の実施例を示す。
図６は、本発明の一実施例である、力伝達部材が紐状体である配向装置の斜視図である。実施例１と同様に、１は配向装置、２ａは棒材（横方向）、２ｂは棒材（奥行方向）、３は棒材（縦方向）、１０は枠部材を示し、枠部材１０は棒材（横方向）２ａ、棒材（奥行方向）２ｂと棒材（縦方向）３により形成される。８は紐状体であるワイヤーを示す。この実施例では、繊維補強コンクリート６中の枠部材１０をワイヤー８により上方に引き抜くことにより、補強繊維を上下方向に配向させることができる。棒材（横方向）２ａ、棒材（奥行方向）２ｂと棒材（縦方向）３が移動した時の補強繊維の動きは、上記の図４、５による説明と同様である。
この実施例では型枠内に枠部材１０を設置してから繊維補強コンクリートを打設し、配向装置１を引き抜くことにより補強繊維を配向させることができるが、重力により枠部材１０を繊維補強コンクリート６の中へ沈めてから、ワイヤー８で引き抜くこともでき、沈めることと引き抜くことを数回繰り返すこともできる。
なお、本実施例において力伝達部材のワイヤー８を引く方向である上下方向は、ワイヤー８の軸方向である。
Next, the Example in case a force transmission member is a string-like body is shown.
FIG. 6 is a perspective view of an orienting apparatus according to an embodiment of the present invention, in which the force transmission member is a string-like body. As in Example 1, 1 is an orientation device, 2a is a bar (horizontal direction), 2b is a bar (depth direction), 3 is a bar (longitudinal direction), 10 is a frame member, and frame member 10 is It is formed by a bar (horizontal direction) 2 a, a bar (depth direction) 2 b and a bar (vertical direction) 3. Reference numeral 8 denotes a wire that is a string-like body. In this embodiment, the reinforcing fiber can be oriented in the vertical direction by pulling the frame member 10 in the fiber reinforced concrete 6 upward with the wire 8. The movement of the reinforcing fibers when the bar (lateral direction) 2a, the bar (depth direction) 2b, and the bar (longitudinal direction) 3 are moved is the same as described with reference to FIGS.
In this embodiment, it is possible to orient the reinforcing fiber by placing the fiber member reinforced concrete after placing the frame member 10 in the mold and pulling out the aligning device 1, but the frame member 10 is made to be fiber reinforced concrete by gravity. After sinking into 6, the wire 8 can be pulled out, and the sinking and pulling out can be repeated several times.
In the present embodiment, the vertical direction, which is the direction in which the wire 8 of the force transmission member is pulled, is the axial direction of the wire 8.
上記の実施例１、２では補強繊維を縦方向に配向させたい場合の例について説明したが、横方向に配向させたい場合でも同様である。
図７は横方向部材である梁の補強繊維を配向させる実施例３を表す。
８はワイヤー、９は抑え治具を示す。枠部材１０に取り付けたワイヤー８は抑え治具９の下部を通して上方へ導く。そして、ワイヤー８を矢印のように上方に引くことによりコンクリート６の中の配向装置１を横方向に移動して、補強繊維を配向する。
本実施例では配向装置１の一方側にワイヤー８を取り付けて引いているが、他方側にもワイヤーを配置して、両方から引くことができるようにすれば、順次ワイヤーを引くことにより配向装置をコンクリート等の中で往復移動させることができ、配向性をさらに上げることができる。
In Examples 1 and 2 described above, the example in which the reinforcing fibers are oriented in the longitudinal direction has been described, but the same applies to the case in which the reinforcing fibers are oriented in the lateral direction.
FIG. 7 shows Example 3 in which the reinforcing fibers of the beam which is a transverse member are oriented.
8 is a wire and 9 is a holding jig. The wire 8 attached to the frame member 10 is guided upward through the lower part of the holding jig 9. Then, by pulling the wire 8 upward as indicated by an arrow, the orientation device 1 in the concrete 6 is moved in the lateral direction to orient the reinforcing fibers.
In this embodiment, the wire 8 is attached and pulled on one side of the orientation device 1, but if the wire is also arranged on the other side and can be pulled from both sides, the orientation device can be drawn by sequentially pulling the wire. Can be reciprocated in concrete or the like, and the orientation can be further increased.
以下のように実験を行い、本発明における曲げ強度について効果を確認した。
まず、高さ２ｍ、厚さ１５０ｍｍの壁を、補強繊維を混入したモルタルで打設した。モルタルの強度は１８０Ｎ／ｍｍ程度とした。補強繊維は鋼繊維を用いた。
次に、棒状体を備えた図３の配向装置を用い、鋼繊維を混入したモルタルの中を複数回上下動してから配向装置を引き抜き、硬化させた配向処理した壁を作成した。また比較例として、鋼繊維を混入したモルタルを配向装置による処理を行わずに硬化させた、無処理の壁を作成した。
そして、軸が鉛直方向になるように直径１００ｍｍ、高さ４００ｍｍの円柱形のコアを切り出して、曲げ試験を行った。
図９は曲げ試験の方法を表す。１１は切り出した円柱形のコア、１２は支点、１３は力を加える点を示す。
まず、円柱形のコア１１を横にして２つの支点１２の上に設置した。支点１２はコア１１の端部からそれぞれ５０ｍｍの場所にセットした。そして、コア１１の端部から１５０ｍｍ、すなわち支点１２の場所からコア１０の中心方向へ１００ｍｍの２カ所の力を加える点１３で上から力を加え、コアが折れた時の力から曲げ強度を算出した。
結果は以下の通りであった。
無処理（比較対象）：１５．９Ｎ／ｍｍ２
配向処理 ：３３．２Ｎ／ｍｍ２
以上のように配向処理により、無処理の例と比較して２倍の曲げ強度が得られた。
An experiment was conducted as follows to confirm the effect of the bending strength in the present invention.
First, a wall having a height of 2 m and a thickness of 150 mm was placed with mortar mixed with reinforcing fibers. The strength of the mortar was about 180 N / mm. Steel fiber was used as the reinforcing fiber.
Next, using the orientation device of FIG. 3 provided with a rod-shaped body, the orientation device was pulled up and down several times in the mortar mixed with the steel fibers, and the orientation-treated wall was drawn and cured. Further, as a comparative example, an untreated wall was prepared by curing mortar mixed with steel fibers without performing treatment with an orientation device.
Then, a cylindrical core having a diameter of 100 mm and a height of 400 mm was cut out so that the axis was vertical, and a bending test was performed.
FIG. 9 shows a bending test method. 11 indicates a cut-out cylindrical core, 12 indicates a fulcrum, and 13 indicates a point to apply force.
First, the cylindrical core 11 was placed on the two fulcrums 12 sideways. The fulcrum 12 was set at a location 50 mm from the end of the core 11. Then, 150 mm from the end of the core 11, that is, the force from the top is applied at the point 13 where two forces of 100 mm are applied from the place of the fulcrum 12 toward the center of the core 10, and the bending strength is determined from the force when the core is broken. Calculated.
The results were as follows.
No treatment (comparative object): 15.9 N / mm 2
Orientation treatment: 33.2 N / mm 2
As described above, by the orientation treatment, double bending strength was obtained as compared with the untreated example.
以上の通り、実施例１〜３について説明したが、本発明はこれらのものに限定されない。
本発明において、配向させる方向は引張応力への耐性が必要な方向であればどのような方向でもよく、引張応力が発生する方向に生じさせるものである。
また、配向装置の枠部材には直方体形状や円柱形状等の籠型のものや、実施例の棒材（奥行方向）２ｂに相当する奥行方向の棒材を省略し、力伝達部材の軸方向から見ると１本の棒状であり、横から見ると口型、工型、Ｔ型のものなど種々の形状のものが含まれる。枠部材としては、配向させる方向に垂直な面の大きさ、配向させる方向への長さや棒材の数も種々のものが用いられる。棒材は、枠部材が直方体であれば直方体形状を構成する部材以外に、枠部材の内部にも設けてもよい。
As described above, Examples 1 to 3 have been described, but the present invention is not limited to these.
In the present invention, the orientation direction may be any direction as long as resistance to tensile stress is required, and is generated in the direction in which tensile stress is generated.
Further, the frame member of the orientation device is a bowl-shaped member such as a rectangular parallelepiped shape or a cylindrical shape, or a depth direction bar corresponding to the bar (depth direction) 2b of the embodiment is omitted, and the axial direction of the force transmission member is omitted. When viewed from the side, it is a single rod, and when viewed from the side, various shapes such as a mouth shape, a work shape, and a T shape are included. As the frame member, various sizes are used in the size of the surface perpendicular to the orientation direction, the length in the orientation direction, and the number of rods. If a frame member is a rectangular parallelepiped, you may provide a rod in the inside of a frame member besides the member which comprises a rectangular parallelepiped shape.
配向装置の力伝達部材は１つでもよいし、間隔をあけるなどして複数用いてもよい。
力伝達部材には、鉄製やカーボンファイバー製の棒状体や、鋼線のワイヤーや有機繊維のロープなどの紐状体など、種々のものが含まれる。棒状体は、枠部材を繊維補強コンクリートあるいは繊維補強モルタル中で往復移動させる力に耐えるものであればどのようなものでも良い。棒状体の断面形状は正方形、長方形、円形など、どのようなものでも良い。また、紐状体は、枠部材を引き抜くための強度があればどのようなものでも良い。
There may be one force transmission member of the orientation device, or a plurality of force transmission members may be used at intervals.
The force transmission member includes various members such as a rod-shaped body made of iron or carbon fiber, or a string-shaped body such as a steel wire or an organic fiber rope. The rod-shaped body may be anything as long as it can withstand the force of reciprocating the frame member in fiber reinforced concrete or fiber reinforced mortar. The cross-sectional shape of the rod-shaped body may be any shape such as a square, a rectangle, or a circle. Further, the string-like body may be anything as long as it has strength for pulling out the frame member.
また、枠部材が有する棒材の方向は、配向させる方向と、配向させる方向に垂直な方向の２方向に限らず、それらの方向の成分があれば斜め方向でもよい。また、棒材は直線状には限定されず、曲線状でもよい。曲線状の棒材を用いた例としては上述の円柱形状の枠部材のほかに、球状の枠部材などがある。棒材の断面形状も正方形、長方形、円形など、どのようなものでも良いが、特に棒材（縦方向）は鉄筋のように凹凸があると周囲の繊維補強コンクリート等が移動しやすい。
さらに棒材を紐材で連結するなどして、枠部材の一部を紐材としてもよい。
Moreover, the direction of the bar which a frame member has is not restricted to two directions of the direction to orientate and the direction perpendicular | vertical to the direction to orient, and if there is a component of those directions, an oblique direction may be sufficient. Further, the bar is not limited to a linear shape, and may be a curved shape. As an example using a curved bar, there is a spherical frame member in addition to the above-mentioned columnar frame member. The cross-sectional shape of the bar may be any shape such as a square, a rectangle, or a circle. In particular, if the bar (longitudinal direction) is uneven like a reinforcing bar, the surrounding fiber-reinforced concrete and the like are easy to move.
Furthermore, a part of the frame member may be used as a string material by connecting a bar material with a string material.
部分的に鉄筋を用いる部材において、型枠中の鉄筋が入っていない部分だけに配向装置を用いて補強繊維を配向してもよい。その場合、鉄筋の配筋に合わせて枠部材の形状を決めて用いても良い。例えば、Ｌ字状に配筋がない部分があれば、Ｌ字状の枠部材を備えた配向装置を用いてもよい。また、複数の配向装置を並列に用いてもよく、一つの配向装置を、場所を変えながら用いてもよい。 In a member that partially uses reinforcing bars, reinforcing fibers may be oriented using only an orientation device in a part of the mold that does not contain reinforcing bars. In that case, the shape of the frame member may be determined according to the reinforcing bar arrangement. For example, if there is an L-shaped portion with no reinforcement, an orientation device including an L-shaped frame member may be used. Further, a plurality of alignment devices may be used in parallel, and one alignment device may be used while changing the location.
配向装置の枠部材は、繊維補強コンクリート等を打設する前に設置しても良いし、打設した後にその中に入れても良い。枠部材を繊維補強コンクリート等の中に入れる際には、棒状体を取り付けた枠部材は押し入れることができ、紐状体を取り付けた枠部材では重力により沈降させたり、中に向けて引っ張ったりすることができる。
配向装置は、繊維補強コンクリート等を打設した後で枠部材を引き抜くだけでもよい。また、１回から数回の往復移動をさせてもよい。数回往復移動させる方がより配向性が高まり、１回の往復移動よりも効果が高い。また、移動のストロークは大きい方が小さいストロークよりも配向性が高まり、より効果が高い。
The frame member of the orientation device may be installed before placing fiber reinforced concrete or the like, or may be placed therein after placing. When putting the frame member into fiber reinforced concrete, etc., the frame member attached with the rod-like body can be pushed in, and the frame member attached with the string-like body is allowed to settle by gravity or pulled inward. can do.
The orientation device may simply pull out the frame member after placing fiber reinforced concrete or the like. Further, the reciprocation may be performed once to several times. The reciprocating movement several times increases the orientation and is more effective than the single reciprocating movement. Further, the larger the stroke of movement, the higher the orientation and the higher the effect than the smaller stroke.
１ ・・・配向装置
１０・・・枠部材
２ａ・・・棒材（横方向）
２ｂ・・・棒材（奥行方向）
２１・・・棒材（横方向）又は棒材（奥行方向）の移動を示す矢印
３ ・・・棒材（縦方向）
３１・・・棒材（縦方向）の移動を示す矢印
４ ・・・棒状体
５ ・・・型枠
６ ・・・繊維補強コンクリート
７ ・・・繊維補強コンクリートの上面
１００・・・補強繊維
１１０・・・補強繊維
１１１・・・補強繊維の動きを示す矢印
１２０・・・補強繊維
１２１・・・補強繊維の動きを示す矢印
１３０・・・補強繊維
６０１・・・棒材（縦方向）３の周囲の繊維補強コンクリート６の動きを示す矢印
８ ・・・ワイヤー
９ ・・・抑え治具
１１・・・円柱形のコア
１２・・・支点
１３・・・力を加える点
DESCRIPTION OF SYMBOLS 1 ... Orientation apparatus 10 ... Frame member 2a ... Bar material (transverse direction)
2b ... Bar (depth direction)
21 ... Bar (horizontal direction) or arrow 3 indicating the movement of the rod (depth direction) ... Bar (vertical)
31 ... Arrow 4 indicating movement of bar (vertical direction) ... Bar-shaped body 5 ... Form 6 ... Fiber reinforced concrete 7 ... Upper surface 100 of fiber reinforced concrete ... Reinforcing fiber 110 ... Reinforcing fiber 111 ... Arrow 120 indicating movement of reinforcing fiber ... Reinforcing fiber 121 ... Arrow 130 indicating movement of reinforcing fiber ... Reinforcing fiber 601 ... Bar (longitudinal direction) 3 Arrow 8 indicating movement of fiber reinforced concrete 6 around the wire 8... Wire 9... Holding jig 11... Cylindrical core 12.
Claims (5)
枠部材と、
前記枠部材に取り付けた力伝達部材と、
を備えることを特徴とする配向装置。 An orientation device for orienting reinforcing fibers in a fiber-reinforced concrete or fiber-reinforced mortar before curing in a desired direction,
A frame member;
A force transmission member attached to the frame member;
An alignment apparatus comprising:
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002088908A (en) * | 2000-09-13 | 2002-03-27 | Taisei Corp | Construction method of concrete structural body |
| JP2002347013A (en) * | 2001-05-28 | 2002-12-04 | Ishikawajima Constr Materials Co Ltd | Method for orienting fiber in fiber reinforced concrete or mortar and fiber-orienting fixture used therefor |
| JP2004299272A (en) * | 2003-03-31 | 2004-10-28 | Taiheiyo Cement Corp | Fiber orienting method and apparatus used therein |
| JP2004299270A (en) * | 2003-03-31 | 2004-10-28 | Taiheiyo Cement Corp | Fiber orienting device, fiber orienting method and molded object of fiber-containing slurry using them |
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2014
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002088908A (en) * | 2000-09-13 | 2002-03-27 | Taisei Corp | Construction method of concrete structural body |
| JP2002347013A (en) * | 2001-05-28 | 2002-12-04 | Ishikawajima Constr Materials Co Ltd | Method for orienting fiber in fiber reinforced concrete or mortar and fiber-orienting fixture used therefor |
| JP2004299272A (en) * | 2003-03-31 | 2004-10-28 | Taiheiyo Cement Corp | Fiber orienting method and apparatus used therein |
| JP2004299270A (en) * | 2003-03-31 | 2004-10-28 | Taiheiyo Cement Corp | Fiber orienting device, fiber orienting method and molded object of fiber-containing slurry using them |
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