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Comparison and Finite Element Analysis of Steel or synthetic fiber Reinforced Precast, Prestressed Beams

Journal of Civil Engineering and Architecture 2015年第9期9卷 1054-1059页

作者： Gábor Kovács Károly Páter Juhász Botond Madaras ASA Construction Ltd. Budapest 1-1-1136 Hungary Department of Mechanics Materials and Structures Budapest University of Technology and Economist Budapest H-113 5 Hungary EMI-TüV SüD Ltd. Budapest H-1043 Hungary

Usage of fiber reinforced concrete to replace shear reinforcement has become more common in the precast industry in recent years. In some cases, the use of steel fibers could be problematic because of corrosion, hence, synthetic material could be a suitable alternative material solution. Thus, it would appear logical to undertake a comparison of these fibers＇ load bearing capacity to determine suitability in each case. In this paper, the bending and the shear tests of four large-scale and prestressed beams made of steel or synthetic fiber reinforced concrete without stirrups are presented. The post-cracking residual tensile strength diagram of the fibers, according to RILEM （International Union of Laboratories and Experts in Construction Materials, Systems and Structures） TC162, is given and the experimental behavior of the fiber solutions is compared. The modified fracture energy method is used to define an advanced material model for the fiber reinforced concrete in the finite element analysis. The numerical calculations and the test results are compared in terms of crack propagation and the loading-deflect＇ion process. As a consequence, both steel and synthetic fibers seem to be good alternatives to replace the stirrups. However, the behavior of each fiber is not the same. The numerical calculation provided a good approximation for the real scale tests.

关键词： synthetic fiber steel fiber prestress precast finite element analysis.

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Experimental Study on the Mechanical Behavior of synthetic fiber Reinforced Concrete

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Transactions of Tianjin University 2003年第4期9卷 312-315页

作者：于敬海田淑明汪士梁赵彤 School of Civil Engineering Design Institute of Tianjin Construction Group Co.Ltd.

Based on a series of tests and engineering examples, a study on the mechanical behavior of synthetic fiber reinforced concrete is presented. As a result, when fiber content varies from 0.03% to 0.14%, though the synthetic fiber has more influence on low strength-grade concrete than on high strength-grade concrete, it makes little difference to the mechanical behavior of concrete in general. Test results and applications in construction show that the synthetic fiber can enhance the energy-absorbing capacity and deformation performance of concrete effectively.

关键词： synthetic fiber concrete behavior

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Technique for Measuring the Sharpness of Staple fiber Cutter Blades

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Journal of Donghua University(English Edition) 2004年第2期21卷 102-104页

作者：原一高朱世根 College of Mechanical Engineering Donghua University Shanghai 200051Dr College of Mechanical Engineering Donghua University Shanghai 200051

Quantitative measurement of the cutter blade sharpness is yet a difficult problem, since so far there has been no appropriate testing method. In this paper, a technique is introduced for measuring the cutter blade sharpness at different testing conditions. The sharpness of cutter blades are measured by detecting the force to cut off the fiber with a material strength testing machine, and the results indicated that the technique could be used to measure the cutter blade sharpness satisfactorily. The fiber tension and downward speed of cutter blades are recommended to be 4.9 cN and 50 mm/min respectively for cutting 0.22 mm PET fiber.

关键词： synthetic fiber cutter blade sharpness measurement

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EXPERIMENT STUDY ON TOUGHNESS OF fiber REINFORCED HIGH PERFORMANCE LIGHTWEIGHT AGGREGATE CONCRETE

EXPERIMENT STUDY ON TOUGHNESS OF FIBER REINFORCED HIGH PERFO...

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The International Symposium on Innovation & Sustainability of Structures in Civil Engineering

作者： Jianming Gao Xiang Dong Dept. of Materials Science and Engineering Southeast University Nanjing 210096 P. R. China Dept. of Building Engineering Nanjing Institute of Technology Nanjing 211167 P. R. China

＜正＞This paper studies effects of steel fibers and synthetic fibers on strength and toughness of high performance lightweight aggregate concrete （HPLWAC）. Results show the addition of steel fibers can reinforce both strength and toughness of HPLWAC, and its flexur-al toughness index can be improved 14 times at the most, but its apparent density increases correspondingly. By adding synthetic fibers, the toughness of HPLWAC can be improved effectively with the maintenance of both its low apparent density and high strength.

关键词： High performance lightweight aggregate concrete (HPLWAC) steel fiber synthetic fiber strength toughness.

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Effect of Multi-fiber on Concrete Performance

Effect of Multi-fiber on Concrete Performance

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The 6th International Symposium on Cement & Concrete and Canmet/Aci International Symposium on Concrete Technology for Sustainable Development

作者： J.J. Yan*, S.S. Peng, D. Yun and J.Z. Li Changjiang River Science Research Institute, No.23 Huangpu Street, Wuhan, Hubei, 430010, China

This paper presents an experimental investigation on steel fiber and synthetic fiber concrete. Compared to plain concrete, the results showed ultimate tensile deformation and anti-cracking ability of

关键词： Steel fiber synthetic fiber multi-fiber anti-cracking concrete.

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