KR100259927B1 - Metal fiber for reinforcing cement composition - Google Patents

Metal fiber for reinforcing cement composition Download PDF

Info

Publication number
KR100259927B1
KR100259927B1 KR1019980001315A KR19980001315A KR100259927B1 KR 100259927 B1 KR100259927 B1 KR 100259927B1 KR 1019980001315 A KR1019980001315 A KR 1019980001315A KR 19980001315 A KR19980001315 A KR 19980001315A KR 100259927 B1 KR100259927 B1 KR 100259927B1
Authority
KR
South Korea
Prior art keywords
bent
steel fiber
sides
reinforcing
concrete structure
Prior art date
Application number
KR1019980001315A
Other languages
Korean (ko)
Other versions
KR19990065849A (en
Inventor
진인창
Original Assignee
진인창
청조화성주식회사
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 진인창, 청조화성주식회사 filed Critical 진인창
Priority to KR1019980001315A priority Critical patent/KR100259927B1/en
Publication of KR19990065849A publication Critical patent/KR19990065849A/en
Application granted granted Critical
Publication of KR100259927B1 publication Critical patent/KR100259927B1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
    • B21D11/10—Bending specially adapted to produce specific articles, e.g. leaf springs
    • B21D11/12—Bending specially adapted to produce specific articles, e.g. leaf springs the articles being reinforcements for concrete

Abstract

PURPOSE: A steel fiber for reinforcing concrete structures is provided which further improves reinforcing properties on concrete structures by constructing so that bent parts of both sides fully demonstrate the function of an anchor in the same conditions. CONSTITUTION: In a steel fiber (100) for reinforcing concrete structures consisting of a body part (110) straightly and horizontally extended in the center of the steel fiber; and bent parts (120) of the both sides of the steel fiber, the bent parts consisting of inclined refracted parts (121) connected to the both sides of the body part (110) and horizontal end parts (122) which is bent again horizontally from the ends of the inclined refracted parts, wherein the bent parts (120) are constructed for the steel fiber (100) so that a length ratio of the horizontal end part (122) which is parallel to the body part (110) verse the inclined refracted part (121) which is inclined from the body part (110) is from 1:1.1 to 1:1.2.

Description

콘크리트구조물 보강용 강섬유Steel fiber for reinforcing concrete structures

본발명은 미경화콘크리트나 모르타르와 같은 시멘트조성물에 혼합 사용되어서 타설 시공된 콘크리트구조물을 보강하여 주는 콘크리트구조물 보강용 강섬유에 관한 것이다.The present invention relates to a steel fiber for reinforcing concrete structures, which is used to reinforce a concrete structure that is used by mixing a cement composition such as unhardened concrete or mortar.

통상적으로 일반 콘크리트구조물은 인장력이 작아서 갑작스런 파괴를 일으키는 취성을 띠고 균열의 생성이나 성장을 억제하기 힘든 특성이 있는 것으로 알려져 있는 바, 최근에는 미경화콘크리트 또는 모르타르와 같은 시멘트조성물에 강섬유를 혼합 사용하여서 타설 시공된 콘크리트구조물을 보강하여 주는 방법이 시도되고 있다.Generally, general concrete structures are known to be brittle because of their low tensile strength and to be hard to inhibit the formation or growth of cracks. A method of reinforcing the constructed concrete structures has been attempted.

즉, 강섬유는 콘크리트구조물의 단면내에 매립 분포되어 콘크리트입자와의 결착력을 증대시켜 주는 동시에, 콘크리트구조물 전체에 균일한 인장력을 부여하여서 작용되는 외부응력을 흡수 분산시켜 주는 보강특성을 발휘하기 때문에, 최근에 각종 콘크리트구조물의 구조적강도 및 인장강도를 향상시켜 주기 위한 보강용으로서 유용하게 사용되어 왔다.That is, the steel fibers are embedded in the cross section of the concrete structure to increase the binding force with the concrete particles, while also providing a reinforcing property to absorb and disperse the external stress applied by applying a uniform tensile force to the entire concrete structure, It has been usefully used as a reinforcement for improving the structural strength and tensile strength of various concrete structures.

이와 같이 콘크리트구조물의 보강용으로서 사용되는 강섬유는 높은 형상계수(강섬유의 길이를 직경으로 나눈 값)를 가지도록 만들어져야 할 필요성이 있다. 왜냐하면, 강섬유는 단면직경이 가늘고 길이가 질에서 높은 형상계수를 가질수록 콘크리트 입자와의 부착면적이 증대되어서 우수한 정착능력과 부착능력을 발휘할 수 있기 때문이다.As such, steel fibers used for reinforcement of concrete structures need to be made to have a high shape factor (length of steel fibers divided by diameter). This is because steel fibers have a thin cross-sectional diameter and have a high shape coefficient in terms of quality, so that the adhesion area with the concrete particles is increased, thereby exhibiting excellent fixing ability and adhesion ability.

상기한 바와 같은 재료역학적인 이론을 배경으로 하여 종래의 콘크리트구조물 보강용 강섬유(1)는 도1a의 도시와 같이, 중앙에 일직선으로 수평하게 연장 형성되는 몸통부(10)와, 상기 몸통부(10)의 양측에 각각 경사꺽임부(21)를 두고 그 경사꺽임부의 끝단에서 다시 수평하게 절곡되는 수평단부(22)를 가지는 양측의 절곡부(20)들로서 구성되었다.On the background of the above-described material dynamics theory, the conventional steel structure reinforcing steel fiber 1 has a trunk portion 10 extending horizontally in a straight line at the center, as shown in FIG. 1A, and the trunk portion ( Each of the bent portions 20 on both sides of 10) has a horizontal end portion 22 which is bent horizontally at the end of the inclined angle portion 21, respectively.

이 강섬유는 도1b의 도시와 같이, 몸통부(10)의 양측에 절곡된 양측의 절곡부(20)들을 가지는 구조로서, 강섬유 자체의 형상계수가 비교적 높고 양측의 절곡부(20)들이 콘크리트구조물(2)의 단면내에서 앵커기능을 수행하기 때문에, 시공된 콘크리트구조물(2)에 대한 보강특성이 비교적 양호한 장점을 가지는 것이 사실이다.As shown in FIG. 1B, the steel fiber has a bent portion 20 on both sides that is bent on both sides of the body portion 10, and the shape coefficient of the steel fiber itself is relatively high, and the bent portions 20 on both sides are concrete structures. Since the anchor function is performed in the cross section of (2), it is true that the reinforcement property for the constructed concrete structure 2 has a relatively good advantage.

그러나, 종래의 강섬유는 그 절곡부(20)를 이루는 경사꺽임부(21)와 수평단부(22)가 동일한 길이를 가지기 때문에, 양측의 절곡부(20)들이 원래의 앵커기능을 충실히 발휘하지 못하는 단점이 있었다.However, in the conventional steel fiber, since the inclined bent portion 21 and the horizontal end portion 22 forming the bent portion 20 have the same length, the bent portions 20 on both sides do not faithfully exhibit the original anchor function. There was a downside.

다시말해서, 상기 양측의 절곡부(20)는 각각 콘크리트구조물(2)의 단면내에서 전단력을 감당하는 경사꺽임부(21)와, 콘크리트입자와의 결속력을 감당하는 수평단부(22)에 의하여 앵커기능을 발휘하게 된다. 따라서, 양측의 절곡부(20)들을 이루는 경사꺽임부(21)와 수평단부(22)가 적정한 길이 비율로서 설정되지 못하고 동일한 길이로서 단순 제작되어서 전단력과 결속력을 감당하는 균형이 깨지면, 그 양측의 절곡부(20)들이 원래의 앵커기능을 효과적으로 발휘하지 못하고 콘크리트 구조물(2)에 대한 강섬유(1)의 보강특성이 크게 떨어져서, 결과적으로 시공된 콘크리트구조물(2)의 구조적강도 및 인장강도를 저하시키는 문제점을 수반하게 되었다.In other words, the bent portion 20 on both sides is anchored by the inclined bent portion 21 to bear the shear force in the cross section of the concrete structure 2 and the horizontal end portion 22 to bear the binding force with the concrete particles, respectively. Function. Therefore, if the inclined bent portion 21 and the horizontal end portion 22 forming the bent portions 20 on both sides are not set as an appropriate length ratio, but are simply manufactured with the same length and the balance for shearing and binding force is broken, The bends 20 do not effectively exhibit the original anchor function and the reinforcing characteristics of the steel fiber 1 to the concrete structure 2 are greatly reduced, resulting in lower structural and tensile strengths of the constructed concrete structure 2. It was accompanied by a problem.

본발명은 동일한 조건에서 양측의 절곡부가 앵커기능을 충실히 발휘하도록 구성하여서, 콘크리트구조물에 대한 보강특성을 더욱 향상시켜 주는 콘크리트구조물 보강용 강섬유를 제공하는 데 그 목적이 있다.The present invention is to provide a steel fiber for reinforcing concrete structure to further enhance the reinforcing characteristics of the concrete structure by configuring the bent portion on both sides faithfully under the same conditions.

제1a도는 종래 콘크리트구조물 보강용 강섬유를 나타낸 정면도.Figure 1a is a front view showing a steel fiber for reinforcing conventional concrete structures.

제1b도는 종래 콘트리트구조물 보강용 강섬유의 실시상태를 나타낸 단면도.Figure 1b is a cross-sectional view showing an embodiment of the conventional steel fiber for reinforcing concrete structure.

제2도는 본 발명 콘트리트구조물 보강용 강섬유를 타낸 정면도.Figure 2 is a front view showing the steel fiber for reinforcing concrete structure of the present invention.

제3도는 콘트리트구조물 보강용 강섬유의 실시상태를 나타낸 단면도.3 is a cross-sectional view showing an embodiment of a steel fiber for reinforcing concrete structures.

제4도는 강섬유의 제조장치로서 낱개형의 콘크리트구조물 보강용 강섬유를 제조하는 상태를 예시한 것임.Figure 4 illustrates a state of manufacturing a steel fiber for reinforcing single-piece concrete structure as a manufacturing device of steel fiber.

제5도는 또 다른 강섬유의 제조장치로서 다발형의 콘크리트구조물 보강용 강섬유를 제조하는 상태를 예시한 것임.FIG. 5 illustrates a state of manufacturing steel fibers for reinforcing bundle concrete structures as another apparatus for manufacturing steel fibers.

〈도면의 주요부분에 대한 부호의 설명〉<Explanation of symbols for main parts of drawing>

100 : 강섬유 110 : 몸통부100: steel fiber 110: body

120 : 절곡부 121 : 경사꺽임부120: bend portion 121: inclined bent portion

122 : 수평단부122: horizontal end

본발명은 중앙에 일직선으로 수평하게 연장 형성되는 몸통부(110)와, 상기 몸통부(110)의 양측에 각각 경사꺽임부(121)를 두고 그 경사꺽임부의 끝단에서 다시 수평하게 절곡되는 수평단부(122)를 가지는 양측의 절곡부(120)들로서 구성된 점에 있어서는 종래의 것과 기술개념을 같이 한다.The present invention has a body portion 110 is formed horizontally extending in a straight line in the center, and the horizontal end portion is bent horizontally bent again at the end of the inclined portion of the inclined portion 121 on both sides of the body portion 110 In terms of the configuration as the bent portions 120 on both sides having the 122, the technical concept is the same as the conventional one.

단, 본발명의 콘크리트구조물 보강용 강섬유는 도2 및 도3에 도시되는 바와 같이, 상기 양측의 절곡부(120)들은 상기 몸통부(110)에 대하여 평행한 수평단부(122) 대 그 몸통부(110)로부터 경사지는 경사꺽임부(121)의 길이 비가 1 :1.1 - 1:1.2이 됨을 기술구성상의 특징으로 한다.However, the steel fiber for reinforcing the concrete structure of the present invention, as shown in Figures 2 and 3, the bent portions 120 on both sides of the horizontal end portion 122 parallel to the body portion 110 versus its body portion The length ratio of the inclined bending portion 121 which is inclined from 110 is characterized in that the technical configuration is 1: 1.1-1: 1.2.

이러한 콘크리트구조물 보강용 강섬유(100)는 도4의 도시와 같이, 원재료인 와이어(A)가 감긴 다수의 보빈(311)들을 가지는 와이어 공급부(310)와, 공급된 와이어(A)를 일정한 직경으로 신선하여 주는 일반장치부(320)와, 서로 맞물려서 회전되는 한쌍의 성형금형(331, 332)들을 가져서 신선된 와이어(A)를 동시에 절단 및 절곡하여 주는 성형절단부(330)로 구성된 강섬유 제조장치(300)로서 낱개형태로 제조된다. 이때, 본발명의 강섬유는 도5의 도시와 같이 와이어 공급부(310)와 성형절단부(330) 사이에 별도의 접착제도포부(340) 및 접착제건조부(350)를 구비한 강섬유 제조장치(300)로서 다발형태로 제조될 수도 있음을 밝혀 둔다.The steel fiber 100 for reinforcing the concrete structure, as shown in Figure 4, the wire supply unit 310 having a plurality of bobbins 311 wound around the wire (A) as a raw material, and the supplied wire (A) to a constant diameter Steel fiber manufacturing apparatus consisting of a general cutting unit 320 for drawing and a forming cutting portion 330 for cutting and bending the wire A simultaneously by having a pair of forming molds 331 and 332 rotated in engagement with each other ( 300) in the form of a single piece. At this time, the steel fiber of the present invention is a steel fiber manufacturing apparatus 300 having a separate adhesive coating 340 and the adhesive drying unit 350 between the wire supply unit 310 and the molding cut portion 330 as shown in FIG. It can be seen that it can also be prepared in the form of a bundle.

본발명의 콘크리트구조물 보강용 강섬유(100)는 중앙의 몸통부(110)의 양측에 경사꺽임부(121)와 수평단부(122)로 이루어지는 양측의 절곡부(120)들로서 구성되며, 상기 양측의 절곡부(120)들은 상기 몸통부(110)에 대하여 평행한 수평단부(122) 대 그 몸통부(110)로부터 경사지는 경사꺽임부(121)의 길이 비가 1:1.1 - 1:1.2이 되도록 함이 중요하다.Steel fiber 100 for reinforcing concrete structure of the present invention is configured as the bent portion 120 of both sides consisting of the inclined bending portion 121 and the horizontal end portion 122 on both sides of the central body portion 110 of the center, The bent portions 120 have a length ratio of the horizontal end portion 122 parallel to the body portion 110 to the inclination portion 121 inclined from the body portion 110 to be 1: 1.1-1: 1.2. This is important.

그 이유는, 양측의 절곡부(120)들이 콘크리트구조물(200) 내에서 원래의 앵커기능을 확실하게 발휘하여 그 콘크리트구조물에 대한 강섬유(100) 자체의 보강특성을 대략 10% 정도로 신장시켜 주어서, 시공된 콘크리트구조물의 구조적강도 및 인장강도를 향상시켜 주기 위함이다.The reason is that the bent portions 120 on both sides reliably exert the original anchor function in the concrete structure 200 to extend the reinforcing characteristics of the steel fiber 100 itself to the concrete structure by about 10%, This is to improve the structural strength and tensile strength of the constructed concrete structure.

즉, 본발명자가 강섬유의 재료역학적인 특성을 실험한 결과에 의하면, 상기 길이의 비가 1:1.2를 초과하는 경우 상기 수평단부(122)의 길이가 상대적으로 짧아져서 주위의 콘크리트구조물입자와 충분한 결속력을 유지할 수 있을 정도의 길이를 확보하지 못하여서 콘크리트구조물에 대한 보강특성이 저하되고, 이와 반대로 상기 비율이 1:1.1 미만인 경우에는 콘크리트구조물 내에서 경사꺽임부(121)가 콘크리트구조물의 단면내에서 전단력을 효과적으로 감당하지 못하여서 콘크리트구조물에 대한 보강특성이 저하됨을 확인하게 되었다. 그리고 본발명 실시예의 도2 및 도3에서와 같이, 상기 양측의 절곡부(120)들 각각의 수평단부(122) 대 경사꺽임부(121)의 길이 비를 1:1.1 - 1:1.2로 한 때에, 콘크리트구조물(200) 내에서의 결속력과 전단력의 균형을 이루면서 더욱 확실하게 앵커기능을 발휘하기 때문에, 콘크리트구조물에 대한 강섬유의 보강특성이 적어도 10%이상 신장되는 결과를 얻을 수 있었다.That is, according to the results of the present inventors testing the material dynamic properties of the steel fiber, when the ratio of the length exceeds 1: 1.2, the length of the horizontal end portion 122 is relatively short and sufficient binding force with the surrounding concrete structure particles The reinforcing characteristics of the concrete structure are deteriorated because the length of the concrete structure cannot be secured. On the contrary, when the ratio is less than 1: 1.1, the inclined bent portion 121 in the concrete structure shear force in the cross section of the concrete structure. It was confirmed that the reinforcing characteristics of the concrete structures were deteriorated because they could not be effectively handled. 2 and 3 of the present invention, the length ratio of the horizontal end portion 122 to the inclined portion 121 of each of the bent portions 120 on both sides is 1: 1.1-1: 1.2. At this time, since the anchoring function is more reliably achieved while balancing the binding force and the shearing force in the concrete structure 200, the reinforcing property of the steel fiber to the concrete structure can be obtained at least 10% or more.

또, 본발명의 콘크리트구조물 보강용 강섬유(100)는 그 몸통부(110)를 포함한 양측의 절곡부(120)가 0.1 - 3mm의 직경크기와 5-200mm의 길이로서 약 60-120kg/mm2의 인장강도를 가지도록 와이어(A)를 인발하여서 되며, 상기 절곡부(120)의 경사꺽임부(121)는 상기 몸통부(110)에서 대략 135도 정도의 굽힘각도로서 경사지게 절곡하여서 된다. 이는 강섬유(100) 그 자체가 높은 형상계수로서 콘크리트입자와의 부착면적이 증대되는 조건을 부여하여 줌으로써, 시공된 콘크리트구조물의 구조적 강도 및 인장강도를 더욱 효과적으로 향상시켜 주는 데에 도움이 된다.In addition, the steel fiber 100 for reinforcing the concrete structure of the present invention is about 60-120kg / mm 2 as the bent portion 120 on both sides including the body portion 110 is 0.1-3mm in diameter and 5-200mm in length The wire A may be drawn to have a tensile strength of the bent portion, and the bent portion 121 of the bent portion 120 may be bent at an angle of about 135 degrees at the trunk portion 110. This gives the condition that the steel fiber 100 itself has a high shape coefficient to increase the adhesion area with the concrete particles, thereby helping to more effectively improve the structural strength and tensile strength of the constructed concrete structure.

이상에서 설명한 본발명의 콘크리트구조물 보강용 강섬유는 양측의 절곡부들이 콘크리트구조물에 내에서 앵커기능을 확실하게 발휘하게 하여서, 시공된 콘크리트 구조물의 구조적강도 및 인장강도를 더욱 향상시켜 주는 유용한 효과를 가지게 되는 것이다.The steel fiber for reinforcing concrete structures of the present invention described above enables the bent portions of both sides to reliably exhibit anchoring functions in the concrete structures, thereby having a useful effect of further improving the structural strength and tensile strength of the constructed concrete structure. Will be.

Claims (2)

중앙에 일직선으로 수평하게 연장 형성되는 몸통부(110)와, 상기 몸통부(110)의 양측에 각각 경사꺽임부(121)를 두고 그 경사꺽임부의 끝단에서 다시 수평하게 절곡되는 수평단부(122)를 가지는 양측의 절곡부(120)들로서 구성된 것에 있어서, 상기 양측의 절곡부(120)들은 상기 몸통부(110)에 대하여 평행한 수평단부(122)대 그 몸통부(110)로부터 경사지는 경사꺽임부(121)의 길이 비가 1:1.1 - 1:1.2이 됨을 특징으로 하는 콘크리트구조물 보강용 강섬유.The body portion 110 is formed horizontally extending in a straight line at the center, and the horizontal end portion 122 which is bent horizontally again at the end of the inclined bending portion with the inclined bending portion 121 on both sides of the body portion 110, respectively. In the configuration of the bent portion 120 on both sides having a, the bent portions 120 on both sides are inclined inclined from the body portion 110 versus the horizontal end portion 122 parallel to the body portion 110 Steel fiber for reinforcing concrete structures, characterized in that the length ratio of the part 121 is 1: 1.1-1: 1.2. 제1항에 있어서, 상기 몸통부(110)를 포함한 양측의 절곡부(120)가 0.1 - 3mm의 직경크기와 5 - 200mm의 길이로서 약 60 - 120kg/mm2의 인장강도를 가지도록 와이어(A)를 인발하여서 되며, 상기 절곡부(120)의 경사꺽임부(121)는 상기 몸통부(110)에서 대략 135도 정도의 굽힘각도로서 경사지게 절곡하여서 됨을 특징으로 하는 콘크리트구조물 보강용 강섬유.According to claim 1, wherein the bent portion 120 on both sides including the body portion 110 has a diameter of 0.1-3mm and a length of 5-200mm to have a tensile strength of about 60-120kg / mm 2 A) is drawn out, the bent portion 121 of the bent portion 120 is steel fiber for reinforcing the concrete structure, characterized in that bent inclined at a bending angle of about 135 degrees in the body portion (110).
KR1019980001315A 1998-01-17 1998-01-17 Metal fiber for reinforcing cement composition KR100259927B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019980001315A KR100259927B1 (en) 1998-01-17 1998-01-17 Metal fiber for reinforcing cement composition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019980001315A KR100259927B1 (en) 1998-01-17 1998-01-17 Metal fiber for reinforcing cement composition

Related Child Applications (1)

Application Number Title Priority Date Filing Date
KR1019990013653A Division KR19990068249A (en) 1999-04-16 1999-04-16 An Apparatus for Making Steel Fibers

Publications (2)

Publication Number Publication Date
KR19990065849A KR19990065849A (en) 1999-08-05
KR100259927B1 true KR100259927B1 (en) 2000-06-15

Family

ID=19531696

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019980001315A KR100259927B1 (en) 1998-01-17 1998-01-17 Metal fiber for reinforcing cement composition

Country Status (1)

Country Link
KR (1) KR100259927B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020081958A (en) * 2001-04-21 2002-10-30 김성환 Adhesive for textile fabric comprising bundles of metal filaments

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020081706A (en) * 2001-04-19 2002-10-30 이은세 A steel fiber cutting method for concrete
KR100441074B1 (en) * 2001-05-18 2004-07-19 주식회사 하이콘 Bundle of bent type reinforce ment-fiber and method for preparing the same
KR100451923B1 (en) * 2001-12-24 2004-10-15 주식회사 천일건축엔지니어링 종합건축사사무소 A manufacturing apparatus of bundle-type steel fiber for reinforcing the concrete structures
KR100471676B1 (en) * 2002-03-22 2005-03-09 스틸화이버코리아 주식회사 Forming roller for the manufacture of a rigid and ductile wire
KR100471675B1 (en) * 2002-03-22 2005-03-09 스틸화이버코리아 주식회사 Manufacture of a rigid and ductile wire for the reinforcement of concrete
KR100442415B1 (en) * 2002-04-06 2004-08-02 스틸화이버코리아 주식회사 Glue device of a rigid and ductile wire for the reinforcement of concrete

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08243602A (en) * 1995-03-09 1996-09-24 Tokyo Seiko Co Ltd Manufacture of steel fiber for reinforcement of concrete

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08243602A (en) * 1995-03-09 1996-09-24 Tokyo Seiko Co Ltd Manufacture of steel fiber for reinforcement of concrete

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020081958A (en) * 2001-04-21 2002-10-30 김성환 Adhesive for textile fabric comprising bundles of metal filaments

Also Published As

Publication number Publication date
KR19990065849A (en) 1999-08-05

Similar Documents

Publication Publication Date Title
CA2818995C (en) Steel fibre for reinforcing concrete or mortar having an anchorage end with at least three straight sections
US6045910A (en) Steel wire element for mixing into subsequently hardening materials
CA2819219C (en) Steel fibre for reinforcing concrete or mortar having an anchorage end with at least two bent sections
KR100259927B1 (en) Metal fiber for reinforcing cement composition
SA93140017B1 (en) Steel fiber reinforced concrete with high bending resistance
US10414691B2 (en) Arched steel fibers for reinforcing cement-based material
CN105298023B (en) Reinforced metal mesh is split in the two-way tubaeform concrete resistance of honeycomb
KR20010078348A (en) S-type steel fiber for reinforcement of concrete
KR20090072528A (en) Defferent material reinforcing bar for artificial structure
US20020194809A1 (en) Square tie wire for securing rebar
JPH111994A (en) Stranded-wire reinforcing material with opening
KR20020081958A (en) Adhesive for textile fabric comprising bundles of metal filaments
JPS63156151A (en) Fiber structure
KR102534869B1 (en) Precast concrete reinforced with steel fiber of hooked type
JP4288013B2 (en) Steel fiber for concrete reinforcement
WO2012080325A2 (en) Steel fibre for reinforcing concrete or mortar provided with flattened sections
US11845693B2 (en) Twisted reinforcement fibers and method of making
JPH0393658A (en) Reinforcing material for structural material
JPS58140354A (en) Formation of reinforced concrete board or the like
TW200811334A (en) Sound isolation device
JPH10194802A (en) Steel fiber for reinforcing concrete and its production
CN205170665U (en) Tubaeform concrete of two -way spiral hinders and splits reinforcing metal mesh
KR200361900Y1 (en) Steel fiber for reinforcing concrete strecture
JPS62241861A (en) Manufacture of inorganic product
KR20050051097A (en) Steel fiber for reinforcing concrete

Legal Events

Date Code Title Description
A201 Request for examination
A107 Divisional application of patent
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
J204 Request for invalidation trial [patent]
J121 Written withdrawal of request for trial
J121 Written withdrawal of request for trial
J204 Request for invalidation trial [patent]
J121 Written withdrawal of request for trial
J206 Request for trial to confirm the scope of a patent right
J121 Written withdrawal of request for trial
J204 Request for invalidation trial [patent]
J204 Request for invalidation trial [patent]
J206 Request for trial to confirm the scope of a patent right
J121 Written withdrawal of request for trial
J301 Trial decision

Free format text: TRIAL DECISION FOR INVALIDATION REQUESTED 20041201

Effective date: 20050921

J301 Trial decision

Free format text: TRIAL DECISION FOR INVALIDATION REQUESTED 20041115

Effective date: 20051007

EXTG Extinguishment