KR200386273Y1 - Deformed steel fiber for reinforced concrete - Google Patents
Deformed steel fiber for reinforced concrete Download PDFInfo
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- KR200386273Y1 KR200386273Y1 KR20-2005-0006491U KR20050006491U KR200386273Y1 KR 200386273 Y1 KR200386273 Y1 KR 200386273Y1 KR 20050006491 U KR20050006491 U KR 20050006491U KR 200386273 Y1 KR200386273 Y1 KR 200386273Y1
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- steel fiber
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
- E04C5/012—Discrete reinforcing elements, e.g. fibres
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/38—Fibrous materials; Whiskers
- C04B14/48—Metal
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/902—High modulus filament or fiber
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S52/00—Static structures, e.g. buildings
- Y10S52/07—Synthetic building materials, reinforcements and equivalents
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Abstract
본 고안은 콘크리트용 요홈이 형성된 강섬유에 관한 것으로 소정의 길이로 절단된 가느다란 강섬유(1)의 양단부측에 경사부(1a)와 수평부(1b)가 대칭으로 절곡형성된 것에 있어서, 강섬유(1)의 전 길이의 주면에 다수의 요홈(2)을 일정한 간격으로 압형형성하여 요홈(2)의 상하 요입부(2a)와 돌출부(2b)에 의하여 강섬유(1)의 표면적의 증대 및 스템(stem)의 휨강도를 크게 하여, 강섬유와 콘크리트와의 결합성을 강화시키고 콘크리트의 조성강도를 보다 향상시킬 수 있게 한 것이다. The present invention relates to a steel fiber in which grooves for concrete are formed, and in which the inclined portion 1a and the horizontal portion 1b are symmetrically bent and formed on both end sides of the thin steel fiber 1 cut into a predetermined length, the steel fiber 1 A plurality of grooves 2 are formed at regular intervals on the main surface of the entire length thereof to increase the surface area of the steel fiber 1 and stem by the upper and lower indentations 2a and the protrusions 2b of the grooves 2. By increasing the flexural strength of), the bond between steel fiber and concrete can be strengthened and the composition strength of concrete can be improved more.
Description
본 고안은 콘크리트용 요홈이 형성된 강섬유에 관한 것이다.The present invention relates to a steel fiber formed grooves for concrete.
일반적으로 콘크리트 보강용의 강섬유는 0.3-0.5mm의 굵기의 가는 강선을 굵기의 약 80-85배의 길이로 절단하여, 절단된 양단부에 굵기의 8배정도의 수평부와 굵기의 6배정도의 경사부가 좌우 대칭으로 절곡형성된 것으로 강섬유를 콘크리트 몰타르에 사방으로 분산되게 혼합하여 콘크리트 구조물의 강도를 보다 증대시키기 위하여 사용되고 있다.In general, steel fiber for concrete reinforcement cuts 0.3-0.5mm thick steel wire into length of 80-85 times the thickness, and the horizontal portion about 8 times the thickness and the inclined portion about 6 times the thickness are cut at both ends. It is formed to be symmetrically bent and is used to increase the strength of the concrete structure by mixing the steel fibers dispersed in the concrete mortar in all directions.
종래의 강섬유는 표면이 미끄러운 강선으로 되어 있기 때문에 강섬유와 콘크리트와의 접합성이 크지 못하며, 또 강섬유는 길이 방향에 대한 인장강도는 어느정도 보유하고 있으나 휨강도는 별로 높지 못한 미비점이 있었다. Conventional steel fiber is because the surface of the slippery steel wire is not a large bond between the steel fiber and concrete, and the steel fiber has a certain tensile strength in the longitudinal direction, but the bending strength is not very high.
또 강섬유의 빳빳한 경직성을 부여하기 위하여 강섬유의 굵기를 크게 하면 강섬유의 중량증가로 인하여, 강섬유의 코스트가 상승될 뿐 아니라, 강섬유가 혼합된 콘크리트의 비중이 보다 증가되어 상대적으로 콘크리트 강도가 낮게되는 문제점이 있었다. In addition, if the thickness of the steel fiber is increased to give the rigidity of the steel fiber, the cost of the steel fiber increases due to the increase in the weight of the steel fiber, and the specific gravity of the concrete mixed with the steel fiber is increased, resulting in relatively low concrete strength. There was this.
본 고안은 종래의 이러한 문제점을 시정하기 하여, 강섬유의 양단부에 수평부와 절곡부가 좌우 대칭으로 절곡 형성된 것에 있어서, 강섬유의 전 길이의 주면에 다수의 요홈을 일정한 간격으로 압형(壓型)형성하여 상하의 요입부와 좌우의 돌출부가 형성되게 구성된 것이다.The present invention is to correct this problem in the prior art, in the horizontal portion and the bent portion is formed symmetrically bent at both ends of the steel fiber, by forming a plurality of grooves in the main surface of the full length of the steel fiber at regular intervals The upper and lower recesses and the right and left protrusions are formed.
본 고안의 강섬유는 주면에 다수의 요홈이 일정한 간격으로 압형 형성되어 있기 때문에 강섬유가 압착된 요홈의 상하면은 납작한 요입부가 형성되고 요입부의 좌우 연부는 강섬유의 측방으로 돌출된 돌출부로 형성되어 있기 때문에 강섬유의 표면에 다수의 요철부가 형성되어 그만큼 표면적이 증대된다. Steel fiber of the present invention has a plurality of grooves are formed on the main surface at regular intervals, so the upper and lower surfaces of the grooves in which the steel fibers are pressed are formed with flat recesses, and the left and right edges of the recesses are formed with protrusions protruding to the side of the steel fibers. A large number of uneven portions are formed on the surface of the surface, thereby increasing the surface area.
또 납작하게 압착된 요홈의 돌출부에 의하여 강섬유에 뻣뻣한 경직성(硬直性)이 부여되어 그만큼 휨강도가 증가된다. In addition, stiff rigidity is imparted to the steel fibers by the flattened protrusions of the grooves, thereby increasing the bending strength.
따라서 본 고안의 강섬유를 콘크리트 몰타르에 분산되게 혼합하여 콘크리트 구조물을 타설하면, 강섬유의 표면적의 증대에 의하여 콘크리트와의 접합면이 증대되고 따라서 콘크리트의 압축강도가 보다 강하게 증대된다.Therefore, when the concrete structure is poured by mixing the steel fibers of the present invention to be dispersed in the concrete mortar, the surface of the steel fiber is increased to increase the joint surface with the concrete, and thus the compressive strength of the concrete is increased more strongly.
또 또한 콘크리트에 사방으로 분산된 강섬유의 강력한 결합성과, 강섬유의 경직성에 의한 휨강도의 증가에 의하여, 종래와 같은 비중의 조건에서 콘크리트의 횡압에 대한 강도가 보다 향상된다. 또 강섬유의 효용성이 향상되어 종래의 강섬유에 비하여 보다 경고한 콘크리트 구조물을 타설할 수 있게 안출한 것이다.In addition, due to the strong bonding of the steel fibers dispersed in the concrete in all directions and the increase in the bending strength due to the rigidity of the steel fibers, the strength to the transverse pressure of the concrete is further improved under the same specific gravity conditions. In addition, the efficiency of the steel fiber is improved to be able to pour concrete structures more wary than conventional steel fibers.
도1에 표시된 바와 같이, 소정의 길이로 절단된 강섬유(1)의 양단부측에 경사부(1a)와 수평부(1b)가 좌우 대칭으로 절곡형성된 것에 있어서, 강섬유(1)의 전 체 길이의 주면에 도2및 도3에 표시된 바와 같이 다수의 요홈(2)을 일정한 간격으로 압형형성하여, 요홈(2)의 상,하면이 요입부(2a)가 되고 요입부(2a)의 좌우 연부는 강섬유(1)의 외측으로 돌출된 돌출부(2b)가 형성되어 강섬유의 표면적의 증대 및 스템(ST)에 경직성을 부여하여 휨강도를 증대시킬 수 있게 구성 된 것이다.As shown in Fig. 1, the inclined portion 1a and the horizontal portion 1b are bent symmetrically on both end sides of the steel fiber 1 cut to a predetermined length, so that the entire length of the steel fiber 1 As shown in Figs. 2 and 3 on the main surface, a plurality of grooves 2 are formed at regular intervals, so that the upper and lower surfaces of the grooves 2 become recesses 2a, and left and right edges of the recesses 2a are formed. Protruding portion 2b protruding to the outside of the steel fiber 1 is formed to increase the surface area of the steel fiber and give rigidity to the stem (ST) is configured to increase the bending strength.
본 고안의 실시에 있어서, 강섬유의 굵기가 0.5mm인 경우, 요홈(2)의 두께는 0.3mm. 폭은 0.6mm, 간격은 2∼3mm로 형성하는 것이 바람직하다.In the practice of the present invention, when the thickness of the steel fiber is 0.5mm, the thickness of the groove (2) is 0.3mm. The width is preferably 0.6 mm and the spacing is 2-3 mm.
그러나 이는 본 고안의 기술을 제한하는 것이 아니고 본 고안의 청구범위 내에서 요홈의 두께와 간격을 설계적으로 변경하는 것도 포함한다. However, this does not limit the technology of the present invention but also includes a design change of the thickness and spacing of the grooves within the claims of the present invention.
이와 같이 된 본 고안은 강섬유(1)의 주면에 다수의 요홈(2)을 일정한 간격으로 압형 형성하여 요홈(2)에 의하여 요입부(2a)와 돌출부(2b)가 형성되게 구성하였기 때문에 강섬유(1)의 표면적이 종래의 것에 비하여 훨씬 크게 증대되고 또 강섬유의 스템(ST)에 뻣뻣한 경직성이 부여되어 강섬유의 휨강도가 보다 크게 된다. The present invention as described above is formed by forming a plurality of grooves (2) at regular intervals on the main surface of the steel fiber (1) by the grooves (2) formed by the concave portion (2a) and the projections (2b) because the steel fiber ( The surface area of 1) is much larger than the conventional one, and stiff rigidity is imparted to the stem ST of the steel fiber, so that the bending strength of the steel fiber is greater.
따라서 본 고안의 강섬유(1)를 콘크리트 몰타르에 분산되게 혼합하여 구조물을 타설하고 경화시키면, 강섬유(1)의 주면과 요홈(2)의 요입부(2a)및 돌출부(2b)에 의한 표면적의 증대와 표면의 요철에 의하여 콘크리트와 강섬유가 강력하게 결합된다. Therefore, when the steel fiber 1 of the present invention is mixed and dispersed in concrete mortar to pour and harden the structure, the surface area of the main surface of the steel fiber 1 and the recesses 2a and protrusions 2b of the grooves 2 is increased. Concrete and steel fibers are strongly bonded by the irregularities on the surface.
또 강섬유의 스템(ST)이 경직성으로 인하여 종래의 강섬유에 비하여 휨강도가 크게 되어서, 콘크리트의 같은 비중의 조건에서 인장강도와 압축강도가 보다 강화되어, 콘크리트의 전체적인 강도가 보다 크게 향상된다. In addition, the rigidity of the stem ST of the steel fiber is greater than that of the conventional steel fiber due to the rigidity, the tensile strength and compressive strength is further strengthened under the same specific gravity of the concrete, the overall strength of the concrete is significantly improved.
또 강섬유의 결합성이 크기 때문에 콘크리트의 절결부에서 일부 노출된 강섬유가 빠져 나올 우려가 없이 견고하게 고착되고 이 부분에 시멘트 몰타르를 충전하면 강섬유와의 결합력에 의하여 콘크리트의 절결부분을 보강할 수 있다. In addition, because of the high bondability of the steel fibers, some exposed steel fibers may be firmly fixed at the cutout portion of the concrete, and cement mortar may be filled to reinforce the cutout portion of the concrete by bonding strength with the steel fibers. .
본 고안은 콘크리트용 강섬유에 있어서, 강섬유의 전 주면에 다수의 요홈을 일정한 간격으로 압형 형성하였기 때문에 요홈에 의한 요입부와 돌출부로 인하여 강섬유의 표면적과 마찰저항이 보다 크게 되어서,콘크리트 몰타르에 본 고안의 강섬유를 종래와 동일조건으로 혼합하여도 콘크리트의 강도가 훨신 증대된다.In the present invention, in the steel fiber for concrete, many grooves are formed on the front surface of the steel fiber at regular intervals, so that the surface area and frictional resistance of the steel fiber are increased due to the recesses and protrusions caused by the grooves. Even if the steel fibers are mixed under the same conditions as before, the strength of concrete is much increased.
또 강섬유의 경직성이 증가되어 그만큼 휨강도가 크게 되므로 콘크리트의 압축강도를 높일 수 있어 강섬유의 효용성이 향상되어 각종 콘크리트 구조물의 타설에 유용하게 사용할 수 있는 효과가 있다. In addition, since the rigidity of the steel fiber is increased, the flexural strength is increased so that the compressive strength of the concrete can be increased, so that the utility of the steel fiber is improved, so that it can be usefully used for placing various concrete structures.
도1는 본 고안의 요홈이 형성된 강섬유의 사시도1 is a perspective view of a steel fiber formed grooves of the present invention
도2는 동 평면 확대도2 is an enlarged plan view of the same plane
도3은 도2 A-A 선 단면도3 is a cross-sectional view taken along the line A-A of FIG.
[도면중 중요한 부분에 대한 부호설명][Code Description of Important Parts of Drawing]
1 : 강섬유 1a: 경사부 1b : 수평부 1: steel fiber 1a: inclined portion 1b: horizontal portion
2 : 요홈 2a : 요입부 2b : 돌출부 2: groove 2a: indentation 2b: protrusion
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| KR20-2005-0006491U KR200386273Y1 (en) | 2005-03-10 | 2005-03-10 | Deformed steel fiber for reinforced concrete |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101548519B1 (en) * | 2012-06-15 | 2015-09-01 | 덴버코리아이엔씨 주식회사 | A method for compaction grouting using steel fiber |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101548519B1 (en) * | 2012-06-15 | 2015-09-01 | 덴버코리아이엔씨 주식회사 | A method for compaction grouting using steel fiber |
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