JPH08218644A - Tape for reinforcing concrete structure - Google Patents

Tape for reinforcing concrete structure

Info

Publication number
JPH08218644A
JPH08218644A JP7022514A JP2251495A JPH08218644A JP H08218644 A JPH08218644 A JP H08218644A JP 7022514 A JP7022514 A JP 7022514A JP 2251495 A JP2251495 A JP 2251495A JP H08218644 A JPH08218644 A JP H08218644A
Authority
JP
Japan
Prior art keywords
tape
fibers
fiber
adhesive
concrete structure
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
Application number
JP7022514A
Other languages
Japanese (ja)
Inventor
Sunao Okamoto
直 岡本
Masaharu Tanigaki
正治 谷垣
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsui Construction Co Ltd
Original Assignee
Mitsui Construction Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsui Construction Co Ltd filed Critical Mitsui Construction Co Ltd
Priority to JP7022514A priority Critical patent/JPH08218644A/en
Publication of JPH08218644A publication Critical patent/JPH08218644A/en
Pending legal-status Critical Current

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  • Working Measures On Existing Buildindgs (AREA)
  • Woven Fabrics (AREA)

Abstract

PURPOSE: To simply reinforce an existing concrete structure, irrespective of the sectional shape thereof. CONSTITUTION: Highly flexible chemical fibers having a tensile strength higher than that of concrete are used as fibers 2 laid longitudinally of a tape. Chemical fibers which can fix the longitudinal fibers 2 are used as widthwise fibers 3. The longitudinal chemical fibers which are linearly laid are woven with the widthwise chemical fibers with gaps 4 being defined among the fibers so that the flowing of adhesive between the front and rear surfaces of the tape is promoted. The tape can be wound around a rectangular sectional shape concrete structure with no slacking so as to reinforce the structure, and the interfiber gaps defined in the tape can eliminate the necessity of impregnation with the adhesive, and accordingly, the adhesive can be applied thereto after the tape is wound so that the tape can be integrally incorporated with the concrete structure. Thereby it is possible to simply wound the tape with no use of a special machine.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、既存のコンクリート構
造物を補強するための補強用テープに関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reinforcing tape for reinforcing an existing concrete structure.

【0002】[0002]

【従来の技術】従来、既存のコンクリート建築物やコン
クリート製の煙突、橋脚等のコンクリート構造物は、亀
裂や大気中の成分によるコンクリートの劣化等により強
度が低下するので、コンクリート構造物の周囲に鉄板な
どの鋼材を巻き付け等により設け、該構造物と鋼材の間
にモルタルや樹脂を注入して補強することが行なわれて
いる。しかし、この方法では鋼材の重量が該構造物自体
の重量を増加させることになり、作業も大掛かりになる
欠点がある。こうした欠点の解決は、例えば特公平5−
73863号公報に見られるように、高強度長繊維スト
ランドを既存の柱に巻き付け、必要に応じて接着剤で該
ストランドを柱に接着して補強することにより可能であ
る。また、特開平4−89970号公報にも、硬化剤を
含浸させたテキスタイルを柱等の周囲に巻き付けて該硬
化剤を硬化させることにより補強する方法が提案されて
いる。
2. Description of the Related Art Conventionally, the strength of existing concrete buildings, concrete chimneys, concrete structures such as bridge piers, etc. decreases due to cracks and deterioration of concrete due to components in the atmosphere. A steel material such as an iron plate is provided by winding, and mortar or resin is injected between the structure and the steel material to reinforce it. However, in this method, the weight of the steel material increases the weight of the structure itself, and there is a drawback in that the work becomes large. To solve these drawbacks, for example, Japanese Patent Publication No. 5-
As disclosed in Japanese Patent No. 73863, it is possible by winding a high-strength long-fiber strand around an existing column and adhering the strand to the column with an adhesive to reinforce the column if necessary. Further, Japanese Patent Application Laid-Open No. 4-89970 also proposes a method in which a textile impregnated with a curing agent is wrapped around a column or the like and the curing agent is cured to reinforce the textile.

【0003】[0003]

【発明が解決しようとする課題】上記高強度長繊維スト
ランドには、炭素繊維、ガラス繊維、芳香族ポリアミド
繊維が使用されるが、例えば炭素繊維のモノフィラメン
トの直径は12μmであり、これの6000本程度を束
ねてもその太さは0.5mm程度で、これを柱の周囲に
緻密に巻き付けるには、柱の長さ1m当り300回の巻
き付けが必要で、その巻き付け作業は手作業では困難
で、特殊な機械を使用しないと作業能率は向上しない。
また、上記硬化剤を含浸させたテキスタイルを巻き付け
る方法では、テキスタイルを比較的広幅に作成できるか
らその巻き付け回数は少なくなるが、テキスタイルの構
成や材料についての明記はなく、硬化剤を長いテキスタ
イルに含浸させる作業や硬化剤が含浸されて湿った長い
テキスタイルを巻き付ける作業はかなり面倒であり、こ
の方法は、柱とテキスタイルの付着による力の伝達につ
いては特に考慮されておらず、柱の剪断補強には十分で
ない。
Carbon fibers, glass fibers, and aromatic polyamide fibers are used for the high-strength long fiber strands. For example, the carbon fiber monofilaments have a diameter of 12 μm, and 6000 of them are used. Even if bundled, the thickness is about 0.5 mm, and in order to tightly wind this around the pillar, it is necessary to wind 300 times per 1 m of the pillar length, and the winding work is difficult by hand. The work efficiency cannot be improved without using a special machine.
Also, with the method of winding a textile impregnated with the above-mentioned curing agent, the number of times of winding can be reduced because the textile can be made relatively wide, but there is no description about the composition and material of the textile, and the textile is impregnated with the curing agent. The work of wrapping and winding a long textile that has been impregnated with a curing agent is quite troublesome, and this method does not take into account the transmission of force due to the adhesion between the column and the textile, and the method for shear reinforcement of the column is not considered. not enough.

【0004】このような巻き付け補強に使用する繊維
は、引張強度の点から考えると炭素繊維が現在のところ
最適であるが、この繊維は柔軟性がなく折れ易い欠点が
あるので、角部を有するコンクリート構造物の補強には
不向きで、円柱のような角部のない構造物の補強に用途
が限定されるから汎用性に乏しい。
Carbon fiber is currently the most suitable fiber for use in such winding reinforcement from the viewpoint of tensile strength, but since this fiber is not flexible and easily broken, it has corners. It is not suitable for reinforcement of concrete structures, and its versatility is poor because its use is limited to reinforcement of structures without corners such as cylinders.

【0005】本発明は、既存のコンクリート構造物をそ
の断面形状に制限されることなく簡単に補強でき、施工
に際しての制限の少ない補強用テープを提供することを
目的とするものである。
It is an object of the present invention to provide a reinforcing tape which can easily reinforce an existing concrete structure without being restricted by its cross-sectional shape and has less restrictions in construction.

【0006】[0006]

【課題を解決するための手段】本発明では、テープの長
さ方向の繊維にコンクリートよりも引張強度が大きく且
つ柔軟性の良い化学繊維を使用すると共に、その幅方向
の繊維に該長さ方向の繊維の位置を固定し得る化学繊維
を使用し、該長さ方向の化学繊維を直線的に配列した状
態で該幅方向の繊維と共に編織し且つ該テープの表裏間
に積極的に接着剤を流通させるための繊維空間を持たせ
て編織したことにより、上記の目的を達成するようにし
た。該長さ方向の繊維に芳香族ポリアミド繊維又は炭素
繊維を使用し、該幅方向の繊維にガラス繊維又はナイロ
ン(商品名)で代表されるポリアミド繊維を使用するこ
とが好ましい。
According to the present invention, a chemical fiber having a greater tensile strength and flexibility than concrete is used as the fiber in the length direction of the tape, and the fiber in the width direction has the length direction. The chemical fibers capable of fixing the positions of the fibers are used, the chemical fibers in the length direction are linearly arranged and woven together with the fibers in the width direction, and an adhesive is positively applied between the front and back of the tape. The above-mentioned object was achieved by knitting and weaving with a fiber space for circulation. It is preferable to use aromatic polyamide fibers or carbon fibers for the lengthwise fibers and glass fibers or polyamide fibers represented by nylon (trade name) for the widthwise fibers.

【0007】[0007]

【作用】該補強用テープは、コンクリート構造物の周面
に巻き付け、接着剤により該構造物と一体化されるが、
該補強用テープはストランドよりもはるかに幅が広く、
その長さ方向の繊維がコンクリートよりも引張強度が大
きいからその巻き付け回数が少なくなり、また、その幅
方向の繊維が該長さ方向の繊維を拘束するので、均一な
厚さで巻き付けれて曲面や段差に対しての適合性が向上
する。コンクリート構造物に予め接着剤を塗布した上に
該テープを巻き付けても、或いは巻き付けた該テープの
上から接着剤を塗布しても、該補強用テープの編織の際
に積極的に形成した繊維空間を介して表裏間に接着剤が
流通するから、接着性が良好で強固に該テープと該構造
物とが一体化し、該構造物に生じる力を確実に該テープ
へ伝達できる。
The reinforcing tape is wrapped around the peripheral surface of a concrete structure and integrated with the structure by an adhesive.
The reinforcing tape is much wider than the strands,
Since the fibers in the length direction have a higher tensile strength than concrete, the number of times of winding is reduced, and the fibers in the width direction restrain the fibers in the length direction, so that the fibers can be wound with a uniform thickness to form a curved surface. Improves compatibility with bumps and steps. Fibers formed positively during weaving of the reinforcing tape, even if the tape is wound on the concrete structure after applying the adhesive in advance or the adhesive is applied on the wound tape. Since the adhesive circulates between the front and back through the space, the tape and the structure are firmly integrated with each other with good adhesiveness, and the force generated in the structure can be reliably transmitted to the tape.

【0008】[0008]

【実施例】本発明の実施例を別紙図面に基づき説明する
と、図1に於いて符号1は平織り編織により作成したコ
ンクリート構造物補強用テープを示し、該テープ1の長
さ方向の繊維2にはコンクリートよりも引張強度が大き
く且つ柔軟性の良い化学繊維を使用し、その幅方向の繊
維3に該長さ方向の繊維の位置を固定し得る化学繊維が
使用される。これらの繊維2、3は、公知の織機により
図2の模式図に示すように該長さ方向の化学繊維2を直
線的に配列した状態で平織りに編織されるが、その交叉
した縦横の繊維間には該テープ1の表裏間に積極的に接
着剤を流通させるための繊維空間4を持たせて編織され
る。該テープ1は、図3に示すように、コンクリート構
造物5の柱や梁を補強するため巻き付けて接着される。
EXAMPLE An example of the present invention will be described with reference to the attached drawing. In FIG. 1, reference numeral 1 denotes a concrete structure reinforcing tape produced by plain weave knitting, and fibers 1 in the length direction of the tape 1 are shown. Is a chemical fiber having a higher tensile strength and flexibility than concrete, and a chemical fiber capable of fixing the position of the fiber in the length direction to the fiber 3 in the width direction is used. These fibers 2 and 3 are knitted into a plain weave in a state in which the chemical fibers 2 in the lengthwise direction are linearly arranged by a known loom as shown in the schematic view of FIG. The tape 1 is knitted and woven with a fiber space 4 for positively flowing the adhesive between the front and back sides of the tape 1. As shown in FIG. 3, the tape 1 is wound and adhered to reinforce the columns and beams of the concrete structure 5.

【0009】コンクリートの引張強度は15kgf/cm2
度であるから、長さ方向の繊維2としては、引張強度が
15000〜20000kgf/cm2 でしかも柔軟性を有す
る芳香族ポリアミド繊維が適当である。コンクリートよ
りも引張強度が大きい繊維には、芳香族ポリアミド繊維
以外に、炭素繊維、ガラス繊維、セラミック繊維等の無
機繊維や、ポリエステル繊維、高強度ポリオレフィン繊
維、高強度ポリビニルアルコール繊維等の有機繊維が知
られているが、無機繊維は折れやすく柔軟性に欠け、ま
た、これらの有機繊維もある程度の柔軟性を有するが、
芳香族ポリアミド繊維のように、直角に曲げることはで
きない。該長さ方向の繊維2は、巻き付けた場合、図3
のように柱の角部に於いて屈曲されることがあり、この
ときに折れないように柔軟性が必要である。更に、使用
環境の観点から60℃程度の耐熱性が必要であることを
考慮すると、上記芳香族ポリアミド繊維が現在のところ
最適である。
Since the tensile strength of concrete is about 15 kgf / cm 2 , aromatic polyamide fibers having a tensile strength of 15,000 to 20,000 kgf / cm 2 and flexibility are suitable as the fibers 2 in the longitudinal direction. Fibers having a higher tensile strength than concrete include, in addition to aromatic polyamide fibers, inorganic fibers such as carbon fibers, glass fibers, and ceramic fibers, and organic fibers such as polyester fibers, high-strength polyolefin fibers, and high-strength polyvinyl alcohol fibers. It is known that inorganic fibers are easily broken and lack flexibility, and these organic fibers also have some flexibility,
It cannot be bent at a right angle like aromatic polyamide fibers. The fibers 2 in the longitudinal direction, when wound, are shown in FIG.
It may be bent at the corners of the column like this, and flexibility is required so that it will not break at this time. Further, considering that heat resistance of about 60 ° C. is required from the viewpoint of use environment, the above aromatic polyamide fiber is currently the most suitable.

【0010】一方、幅方向の繊維3は、巻き付けた場合
でも急激な屈曲を生じることは少ないので、柔軟性は必
須の条件ではなく、長さ方向の繊維2の配列を維持する
ことと使用状況に応じてはコンクリート構造物の曲げ強
度をも補強するために、長さ方向の繊維2よりも引張強
度の大きい繊維が用いられる。幅方向の繊維3には、価
格を考慮すればガラス繊維やナイロン(商品名)で代表
されるポリアミド繊維が適当であるが、高価であっても
引張強度が極めて大きい炭素繊維を使用することも有効
であり、補強時に該テープを重ね巻きしてコンクリート
構造物に接着するとその巻方向と交叉した方向に例えば
炭素繊維が図5のように接着剤により接着されて連続
し、該構造物の曲げ強度を補強することができる。
On the other hand, since the fibers 3 in the width direction rarely undergo abrupt bending even when wound, the flexibility is not an essential condition, and the arrangement of the fibers 2 in the length direction is maintained and the situation of use. Accordingly, in order to reinforce the bending strength of the concrete structure as well, fibers having a higher tensile strength than the fibers 2 in the longitudinal direction are used. As the fibers 3 in the width direction, glass fibers and polyamide fibers represented by nylon (trade name) are suitable in consideration of price, but carbon fibers having extremely high tensile strength may be used even if they are expensive. This is effective, and when the tape is overlapped and adhered to the concrete structure at the time of reinforcement, for example, carbon fibers are adhered and continuous by an adhesive as shown in FIG. Strength can be reinforced.

【0011】これら繊維2、3を平織構造に編織する際
に、繊維空間4が形成されるが、該繊維空間4の寸法は
接着剤が流通できる例えば0.5〜3mm程度の略方形
の空間であり、その寸法は接着剤の粘性との兼ね合いで
決定される。該空間はテープ1の面に垂直に形成する必
要はなく、その寸法の調整は該繊維2、3で構成される
糸の本数の調整により行なえる。尚、編織方法は、長さ
方向の繊維2を直線的に配列するように幅方向の繊維3
と共に織れる平織以外の編織方法であってもよい。
When the fibers 2 and 3 are knitted into a plain weave structure, a fiber space 4 is formed. The size of the fiber space 4 is a substantially rectangular space in which the adhesive can flow, for example, about 0.5 to 3 mm. And its size is determined in consideration of the viscosity of the adhesive. The space does not have to be formed perpendicularly to the surface of the tape 1, and its size can be adjusted by adjusting the number of yarns composed of the fibers 2 and 3. The knitting / weaving method uses the fibers 3 in the width direction so that the fibers 2 in the length direction are linearly arranged.
A knitting method other than a plain weave that can be woven together may be used.

【0012】該補強用テープ1は図3のようにコンクリ
ート柱や梁等の柱状のコンクリート構造物5に巻き付け
てその補強に使用されるが、その巻き付けに先立ち図4
のように該構造物5はその表面の汚れや亀裂等の破損部
を除去修復して清浄化し、該表面の修復を兼ねてプライ
マーを該表面に塗布し、これを硬化させる。そして、該
表面に接着剤を均一に塗布したのち、上記本発明の補強
用テープ1を緩まぬように巻き付ける。この場合、巻き
付けたテープ1の各ループの幅方向の繊維3が連続する
ように、テープの縁部6を重ねて貼着することが好まし
い。該貼着が終了してから更にもう1度該テープ1の表
面に接着剤を塗布する。これによって接着剤はテープ1
の繊維空間4を介してテープ1の内部に含浸されると共
に裏面側へ流通し、その硬化後にはテープ1全体が強固
に該構造物5に付着する。尚、プライマーとしては、2
0℃で7日後に10kgf/cm2 以上の接着強度を発揮する
比重が約1のプライマーを使用することが好ましく、例
えば、主剤としてエポキシ樹脂25重量%、溶剤25重
量%、硬化剤として複素環式ジアミン変性物24重量
%、三級アミン2重量%、溶剤24重量%の組成を有す
るエポキシ系プライマーであって、20℃、7日後に2
0kgf/cm2 の接着強度を発揮するプライマーが使用され
る。また、接着剤としては、20℃、7日後の引張剪断
強度と圧縮降伏強度及び圧縮弾性係数が夫々100kgf/
cm2 以上、500kgf/cm2 以上、10000kgf/cm2
上の値を持つ、例えばエポキシ樹脂接着剤が使用され
る。この値を持つエポキシ樹脂接着剤のうち、粘度が1
000cmPoisのものを該テープ1の外面に塗布すれば、
該テープ1の繊維空間4が0.5mm×0.5mm以下
であってもその内部及び裏面へ十分に浸透し、その硬化
後には該テープ1がコンクリートと一体になる。尚、巻
き付けには特別な機械は必要でなく、手作業で比較的迅
速に行える。
The reinforcing tape 1 is wound around a columnar concrete structure 5 such as a concrete column or a beam as shown in FIG. 3 to be used for reinforcement thereof.
As described above, the structure 5 is cleaned by removing and repairing the damaged portion such as dirt and cracks on the surface, and the primer is applied to the surface also for the purpose of repairing the surface, and this is cured. Then, after uniformly applying an adhesive to the surface, the reinforcing tape 1 of the present invention is wound so as not to loosen. In this case, it is preferable that the tape edges 1 are overlapped and attached so that the fibers 3 in the width direction of each loop of the wound tape 1 are continuous. After the sticking is completed, the adhesive is applied to the surface of the tape 1 again. As a result, the adhesive tape 1
The tape 1 is impregnated into the inside of the tape 1 through the fiber space 4 and flows to the back surface side, and after curing, the entire tape 1 firmly adheres to the structure 5. As a primer, 2
It is preferable to use a primer having a specific gravity of about 1 which exhibits an adhesive strength of 10 kgf / cm 2 or more after 7 days at 0 ° C., for example, epoxy resin 25% by weight, solvent 25% by weight, and heterocycle as a curing agent. An epoxy-based primer having a composition of a modified diamine of 24% by weight, a tertiary amine of 2% by weight, and a solvent of 24% by weight, which is 2 °
A primer that exhibits an adhesive strength of 0 kgf / cm 2 is used. As an adhesive, the tensile shear strength after 7 days at 20 ° C, the compressive yield strength and the compressive elastic modulus are 100 kgf /
cm 2 or more, 500 kgf / cm 2 or more, with 10000 kgf / cm 2 or more values, for example, an epoxy resin adhesive is used. Of the epoxy resin adhesives with this value, the viscosity is 1
If you apply 000cm Pois to the outer surface of the tape 1,
Even if the fiber space 4 of the tape 1 is 0.5 mm × 0.5 mm or less, the tape 1 sufficiently penetrates into the inside and the back surface of the tape 1, and after the hardening, the tape 1 becomes integral with the concrete. No special machine is required for winding, and it can be done relatively quickly by hand.

【0013】該テープ1に塗布した接着剤の硬化後、紫
外線やオゾンから該テープ1を保護し、耐候性、耐久性
および美観を向上させるために、適当な塗料を該テープ
1の外面に塗布して仕上げ、使用環境によっては火災や
外傷から該テープ1を保護するために、セメントやモル
タルにより或いは外装板を設置して仕上げる。
After the adhesive applied to the tape 1 is cured, a suitable paint is applied to the outer surface of the tape 1 in order to protect the tape 1 from ultraviolet rays and ozone and improve weather resistance, durability and aesthetics. In order to protect the tape 1 from fire and external damage depending on the use environment, it is finished with cement or mortar or by installing an exterior plate.

【0014】具体的実施例に於いて、長さ方向の繊維2
として6000デニールの芳香族ポリアミド繊維の直径
0.5mmの糸を50本使用し、幅方向の繊維3として
2000デニールのガラス繊維の直径0.3mmの糸を
1cm当り3本使用して織機により幅が75±5mmの
平織の補強用テープ1を作成した。該テープ1の両端は
加熱ロールによりほつれを止めるように熱加工した。各
糸の間には0.5〜3mmの方形の繊維空間4が形成さ
れる。このテープ1の断面積は0.345cm2 、引張
弾性率が0.6×106 kg/cm 2 、引張強度が1300
0kg/cm 2 であった。一方、補強を必要とする長さが5
mで一辺の幅が60cmの正方形断面のコンクリート柱
の表面の破損部を除去修復して清浄化し、表面の含水率
が8%のときに20℃、7日後に20kgf/cm2 の接着強
度を発揮するエポキシ系プライマーを塗布し、その硬化
後に上記の値を満足する粘度が1000cmPoisのエポキ
シ樹脂接着剤を塗布し、ピッチ間隔7.5cm即ち重な
り幅5mmで該テープ1を緩みなく巻き付けした。その
巻き付け完了後、該テープ1の外面から該接着剤を塗布
して繊維空間4内に浸透させ、該構造物の補強面に直接
触れないようにその周囲をビニールシートで覆って2週
間養生させた。この間の平均気温は20℃であった。補
強前の該コンクリート柱の剪断強度は20kgf/cm2 であ
ったが、この補強の結果、剪断強度は30kgf/cm2 に向
上した。また、テープ1の巻き付けに要した時間は作業
員2名の合計時間で3時間であった。
In a specific embodiment, the longitudinal fibers 2
As the width of the fiber 3, 50 fibers of 6000 denier aromatic polyamide fiber having a diameter of 0.5 mm are used, and as fiber 3 in the width direction, 3 fibers having a diameter of 0.3 mm of 2000 denier are used. A plain weave reinforcing tape 1 having a thickness of 75 ± 5 mm was prepared. Both ends of the tape 1 were heat-processed by heating rolls so as to prevent fraying. A rectangular fiber space 4 of 0.5 to 3 mm is formed between the yarns. The tape 1 has a cross-sectional area of 0.345 cm 2 , a tensile elastic modulus of 0.6 × 10 6 kg / cm 2 , and a tensile strength of 1300.
It was 0 kg / cm 2 . On the other hand, the length that requires reinforcement is 5
The surface of a concrete column with a square cross section of 60 cm and a side width of 60 cm is removed and repaired to clean the surface, and when the water content of the surface is 8%, the adhesive strength of 20 kgf / cm 2 is obtained after 20 days at 20 ° C. An epoxy-based primer that exerts its effect was applied, and after curing, an epoxy resin adhesive having a viscosity of 1000 cm Pois that satisfied the above values was applied, and the tape 1 was wound without looseness at a pitch interval of 7.5 cm, that is, an overlapping width of 5 mm. After the winding is completed, the adhesive is applied from the outer surface of the tape 1 so that the tape penetrates into the fiber space 4, and the periphery thereof is covered with a vinyl sheet so as not to directly touch the reinforcing surface of the structure and cured for 2 weeks. It was The average temperature during this period was 20 ° C. The shear strength of the concrete column before reinforcement was 20 kgf / cm 2 , but as a result of this reinforcement, the shear strength was improved to 30 kgf / cm 2 . The time required for winding the tape 1 was 3 hours as a total time of 2 workers.

【0015】[0015]

【発明の効果】以上のように発明によれば、コンクリー
ト構造物補強用テープを、長さ方向の繊維にコンクリー
トよりも引張強度が大きく且つ柔軟性の良い化学繊維を
使用すると共に、その幅方向の繊維に該長さ方向の繊維
の位置を固定し得る化学繊維を使用し、該長さ方向の化
学繊維を直線的に配列した状態で且つ該テープの表裏間
に積極的に接着剤を流通させるための繊維空間を持たせ
て編織して構成したので、角型断面のコンクリート構造
物に緩みなく巻き付けて補強することができ、該テープ
にその表裏間に接着剤を流通させる繊維空間を形成した
ので巻き付けの際にテープ自体に接着剤を含浸させる必
要がなく、巻き付け後に接着剤を塗布して該構造物とテ
ープを一体化できるから該構造物に生じる剪断力を確実
に該テープに伝達できて該テープによる補強効果が高ま
り、巻き付け作業を特別な機械を使用することなく簡単
に行なえる等の効果がある。
As described above, according to the present invention, a tape for reinforcing a concrete structure is manufactured by using a chemical fiber having a tensile strength larger than that of concrete and having a high flexibility as a fiber in the length direction, and a tape in the width direction thereof. A chemical fiber that can fix the position of the fiber in the length direction is used for the above fiber, and the adhesive is positively distributed between the front and back sides of the tape in a state where the chemical fiber in the length direction is linearly arranged. Since it was constructed by weaving with a fiber space to allow it to be wound, it can be wrapped around a concrete structure with a square cross section without loosening and can be reinforced, and a fiber space for allowing an adhesive to flow between the front and back of the tape is formed. Since it is not necessary to impregnate the tape itself with the adhesive during winding, the adhesive can be applied after winding to integrate the structure with the tape, so that the shearing force generated in the structure can be reliably transmitted to the tape. Can increases the reinforcing effect of the tape, there is an effect such as that carried out easily without the use of a special machine the winding operation.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の補強用テープの斜視図FIG. 1 is a perspective view of a reinforcing tape of the present invention.

【図2】本発明の補強用テープの要部の拡大平面図FIG. 2 is an enlarged plan view of a main part of the reinforcing tape of the present invention.

【図3】本発明の補強用テープの使用状態の斜視図FIG. 3 is a perspective view of a reinforcing tape of the present invention in a used state.

【図4】図3の補強状態の1工程の説明図FIG. 4 is an explanatory view of one step in the reinforced state of FIG.

【図5】図4の要部の拡大断面図5 is an enlarged cross-sectional view of the main part of FIG.

【符号の説明】[Explanation of symbols]

1 コンクリート構造物補強用テープ 2 長さ方向
の繊維 3 幅方向の繊維 4 繊維空間
1 Concrete structure reinforcing tape 2 Fiber in length direction 3 Fiber in width direction 4 Fiber space

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 テープの長さ方向の繊維にコンクリート
よりも引張強度が大きく且つ柔軟性の良い化学繊維を使
用すると共に、その幅方向の繊維に該長さ方向の繊維の
位置を固定し得る化学繊維を使用し、該長さ方向の化学
繊維を直線的に配列した状態で該幅方向の繊維と共に編
織し且つ該テープの表裏間に積極的に接着剤を流通させ
るための繊維空間を持たせて編織したことを特徴とする
コンクリート構造物補強用テープ。
1. A chemical fiber having greater tensile strength and flexibility than concrete is used as the fiber in the length direction of the tape, and the position of the fiber in the length direction can be fixed to the fiber in the width direction. A chemical fiber is used, and the chemical fiber in the length direction is knitted and woven together with the fiber in the width direction in a linearly arranged state, and has a fiber space for positively distributing an adhesive between the front and back of the tape. A tape for reinforcing a concrete structure, characterized by being woven and woven.
【請求項2】 上記長さ方向の繊維が芳香族ポリアミド
繊維又は炭素繊維であり、上記幅方向の繊維がガラス繊
維又はナイロン(商品名)で代表されるポリアミド繊維
であることを特徴とする請求項1に記載のコンクリート
構造物補強用テープ。
2. The fiber in the length direction is an aromatic polyamide fiber or a carbon fiber, and the fiber in the width direction is a glass fiber or a polyamide fiber represented by nylon (trade name). Item 2. A tape for reinforcing a concrete structure according to Item 1.
JP7022514A 1995-02-10 1995-02-10 Tape for reinforcing concrete structure Pending JPH08218644A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7022514A JPH08218644A (en) 1995-02-10 1995-02-10 Tape for reinforcing concrete structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7022514A JPH08218644A (en) 1995-02-10 1995-02-10 Tape for reinforcing concrete structure

Publications (1)

Publication Number Publication Date
JPH08218644A true JPH08218644A (en) 1996-08-27

Family

ID=12084881

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7022514A Pending JPH08218644A (en) 1995-02-10 1995-02-10 Tape for reinforcing concrete structure

Country Status (1)

Country Link
JP (1) JPH08218644A (en)

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