• Title/Summary/Keyword: wire-fabric

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An Experimental Study on flexural behavior of One -Way Concrete Slabs using Structural Weled Wire - Fabric (구조용 용접철망을 사용한 일방향 슬래브의 휨거동에 관한 실험적 연구)

  • 허갑수;윤영호;양지수;김석중;정헌수
    • Proceedings of the Korea Concrete Institute Conference
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    • 1993.10a
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    • pp.226-231
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    • 1993
  • This research is undertaken to the flexural strength, failure mode and ductile capacity of one way concrete slabs, with without splices, reinforcement with Wire-Fabric. Test results are as fallows : (1) Crack of the simple slabs is occured at a position of transerve wire and sntirely crack interval of the fixed slabs is taken place about 20cm, (2)Maximum load of slab with splices has showed almost similar to that of slab without splices, but ductile capacity increased according to rising of splices, (3) Ductile capacity of slab with Deformed Bar is higher 1.44 times than that of slab with Wire-Fabric, and it is higher 3.74 times than that of slab with Loop-wire fabric, but that of specimens of using Wire-Fabric is average 4.6.

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Inplane Flexural Behavior of Concrete Walls Reinforced by Welded Wire Fabric (용접철망 콘크리트 벽체의 면내 휨거동 연구)

  • Kim, Dae-Joong;Kim, Woo;Yang, Ji-Soo;Yoon, Young-Ho;Chung, Lan
    • Proceedings of the Korea Concrete Institute Conference
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    • 1993.04a
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    • pp.136-141
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    • 1993
  • 8 Wall specimens (1/2 scaled) used welded wire fabric (Ф=6mm) and ordinary deformed reinforcement(D6) of which their ultimate tensile strength were almost same were tested to investigate the inplane-flexural behavior. Test results show that : 1. The wall strength with welded wire fabric was 20% less than that with deformed bar. 2. The wall ductility ratio of welded wire fabric was 1/3 times than that of deformed bar, approximately. 3. It is recommened that lap splice of welded sire fabric should be avoided in critical fracture zone.

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An Experimental Study on Flexural Behavior of One-Way Concrete Slabs Using Structural Welded Wire-Fabric (구조화 용접철강을 사용한 일방향 슬래브의 휨 거동에 관한 실험적 연구)

  • 허갑수;윤영호;양지수;김석중;정헌수
    • Magazine of the Korea Concrete Institute
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    • v.6 no.2
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    • pp.169-179
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    • 1994
  • Recently the construction of residential buildings faces many difficulties due to the shortage of building materials and works. Simplifying the stage of processing and assembling reinforcing rods and increasing the efficiency of them in reinforced concrete construction can be used to settle the difficulties. In the respect, structural wire-fabric and loop wire-fabric is utilized. The purpose of this study, on condition of being $210kg/cm^2$ concrete strength, is to analyze the structural and flexural properties of one-way concrete slabs by testing with different reinforcing type, tensile steel ratio based with minimum steel ratio, boundary condition and splice length which affect the maximum width of crack and ductility factor. From the test results, the ductility factor is approved that the slabs using deformed bar were much better than that using wire-fabric, and 30D of splice length was appropriate in the slabs as splice length. In the control of the maximum crack width the slabs using wire-fabric and loop wire-fabric were much better than that using deformed bar.

The Flexural Behavior including Ductility of Half Precast Concrete Slab with Welded Deformed Wire Fabric (용접철망을 사용한 반두께 P.C.슬래브의 휨 및 연성거동)

  • 이광수;최종수;조민형;신성우
    • Magazine of the Korea Concrete Institute
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    • v.6 no.4
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    • pp.153-160
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    • 1994
  • Ten Half precast concrete slabs reinforced with welded deformed wire fabric were tested under two concentrated loads to investigate the flexural moment and ductile capacity. The test variables were the compressive strength of topping concrete, quantitative roughness, and reinforcernent ratio. The effects of each test variables were studied separately. Test results were as followings. The ultimate strength design method is applicable to predict flexural strength for Half P.C. concrete slab with welded deformed wire fabric and quantitative roughness. It is proper to consider 0.0035 strain ;is yielding stress of the welded deformed wire fabric. The ductility index of Half precast concrete slab with welded deformed wire fabric showed lower value. Therefore to enhance the ductility capacity the normal defomed bar should be used with the welded deformed wire fabric for the longitudinal reinforcement.

Inplane Shear Behavior of Concrete Walls Reinforced by Welded Wire Fabric (용접철망 콘크리트 벽체의 전단거동 연구)

  • Kim, Woo;Chung, Lan;Yang, Ji-Soo;Yoon, Young-Ho;Kim, Dae-Joong
    • Proceedings of the Korea Concrete Institute Conference
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    • 1993.04a
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    • pp.130-135
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    • 1993
  • Twelve 1/2 scale modeled wall specimens were tested statically up to failure to investigate she shear behavior of concrete walls reinforced with welded wire fabric. major variables were spacing of reinforcing bars, type of reinforcing bar(rebar, welded sire fabric, knurling wire) and the existence of tied column type reinforcement

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Ductility of concrete slabs reinforced with low-ductility welded wire fabric and steel fibers

  • Tuladhar, Rabin;Lancini, Benjamin J.
    • Structural Engineering and Mechanics
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    • v.49 no.4
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    • pp.449-461
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    • 2014
  • The use of low-ductility welded wire fabric (WWF) as a main tensile reinforcement in concrete slabs compromises the ductility of concrete structures. Lower ductility in concrete structures can lead to brittle and catastrophic failure of the structures. This paper presents the experimental study carried out on eight simply supported one-way slabs to study the structural behavior of concrete slabs reinforced with low-ductility WWF and steel fibers. The different types of steel fibers used were crimped fiber, hooked-end fiber and twincone fiber. The experimental results show that the ductility behavior of the slab specimens with low-ductility reinforcement was significantly improved with the inclusion of $40kg/m^3$ of twincone fiber. Distribution of cracks was prominent in the slabs with twincone fiber, which also indicates the better distribution of internal forces in these slabs. However, the slab reinforced only with low-ductility reinforcement failed catastrophically with a single minor crack and without appreciable deflection.

Synthesis of Nanosized Powders by Wire Explosion (전기폭발(wire explosion)에 의한 나노분말 제조)

  • Cho, Chu-Hyun;Rim, Geun-Hie;Lee, Hong-Sik;Jiang, WeiHua
    • Proceedings of the KIEE Conference
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    • 2005.07c
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    • pp.2057-2059
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    • 2005
  • Silver nanosized powder have been synthesized using wire explosion technology. The discharge system of 10kw (10uF, 20kV, 0.5 shots/s) was set up for mass production of 300g/h. The high purity silver powder was collected and separated by cyclone and fabric filters.

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Design and Implementation of Content Switching Network Processor and Scalable Switch Fabric

  • Chang, You-Sung;Yi, Ju-Hwan;Oh, Hun-Seung;Lee, Seung-Wang;Kang, Moo-Kyung;Chun, Jung-Bum;Lee, Jun-Hee;Kim, Jin-Seok;Kim, Sang-Ho;Jung, Hee-Jae;Hong, Il-Sung;Kim, Yong-Hwan;Lee, Yu-Sik;Kyung, Chong-Min
    • JSTS:Journal of Semiconductor Technology and Science
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    • v.3 no.4
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    • pp.167-174
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    • 2003
  • This paper proposes a network processor especially optimized for content switching. With 2Gbps port capability, it integrates packet processor cluster, content-based classification engine and traffic manager on a single chip. A switch fabric architecture is also designed for scale-up of the network processor's capability over hundreds gigabit bandwidth. Applied in real network systems, the network processor shows wire-speed network address translator (NAT) and content-based switching performance.

An Experimental Study on the Structural Behavior of Reinforced Concrete Continuous Deep Beams Using Welded Deformed Wire Fabric as Shear Reinforcements (이형 용접철망을 전단철근으로 사용한 철근콘크리트 연속 깊은 보의 구조적 거동에 대한 실험적 연구)

  • Yang Keun-Hyeok;Chung Heon-Soo
    • Proceedings of the Korea Concrete Institute Conference
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    • 2005.05a
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    • pp.95-98
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    • 2005
  • The objective of this experimental study was to understand the structural behavior of reinforced concrete continuous deep beams with welded deformed wire fabric(WWF) as shear reinforcement. The structural behavior of deep beams reinforced with WWF was compared with that of deep beams reinforced with orthogonal shear reinforcement which had standard anchorage corresponding to ACI 318-02. Test results showed that the load transferring capacity and the control of splitting cracks in the strut of WWF were almost as effective as those of orthogonal shear reinforcement with standard anchorage.

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Experimental investigation of retrofitted shear walls reinforced with welded wire mesh fabric

  • Yuksel, Suleyman B.
    • Structural Engineering and Mechanics
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    • v.70 no.2
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    • pp.133-141
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    • 2019
  • The aim of the present paper is to present the cyclic behavior of strengthened reinforced concrete shear wall test specimen, which was reinforced with cold drawn welded wire mesh fabric. Two reinforced concrete shear wall specimens have been tested in the present study. The walls were tested under reversed cyclic loading with loading applied near the tip of the walls. The control wall is tested in its original state to serve as a baseline for the evaluation of the repair and strengthening techniques. The two test specimens include a control wall and a repaired wall. The control wall test specimen was designed and detailed to simulate non-ductile reinforced concrete shear walls that do not meet the modern seismic provisions. The response of the original wall was associated with the brittle failure. The control shear wall was repaired by addition of the reinforcements and the concrete and then it was reloaded. The effectiveness of the repair technique was investigated. Test results indicate that there can be a near full restoration of the walls' strength. The data from this test, augmenting other data available in the literature, will be useful in calibrating improved analytical methods as they are developed.