EXPERIMENT ON THE EFFECTS OF STEEL FIBERS ON THE FLEXURAL TOUGHNESS AND FRACTURE ENERGY OF HIGH-PERFORMANCE CONCRETE

Wang Tianfeng

doi:10.13204/j.gyjz200705017

Volume 37 Issue 5

Dec. 2014

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Wang Tianfeng. EXPERIMENT ON THE EFFECTS OF STEEL FIBERS ON THE FLEXURAL TOUGHNESS AND FRACTURE ENERGY OF HIGH-PERFORMANCE CONCRETE[J]. INDUSTRIAL CONSTRUCTION, 2007, 37(5): 65-68. doi: 10.13204/j.gyjz200705017

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EXPERIMENT ON THE EFFECTS OF STEEL FIBERS ON THE FLEXURAL TOUGHNESS AND FRACTURE ENERGY OF HIGH-PERFORMANCE CONCRETE

doi: 10.13204/j.gyjz200705017

Wang Tianfeng

1.
Zhejiang Acadamy of Building Research and Design Hangzhou 510012

Received Date: 2006-07-10
Publish Date: 2007-05-20

Abstract

Abstract

According to the test method recommended by RILEM,three-point bending tests on notched beams of steel-fiber reinforced high-performance concrete(SFHPC) were carried out.The experimental results show that both steel fiber type and steel fiber content play important roles in the flexural toughness and fracture energy of high-performance concrete(HPC).The energy absorption capacity and fracture energy of SFHPC increase obviously with the increase of steel fiber content.Compared to the marked steel fiber with lower strength,the hooked steel fiber with higher strength has better effects on the flexural toughness and fracture energy of HPC.The mechanical and failure characteristics of SFHPC beams in bending test can be described well by using fracture energy and flexural toughness indices together.
- SFHPC,
- fiber content,
- fiber type,
- flexural toughness,
- fracture energy

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References(10)

References

[2] 王成启,吴科如.钢纤维和碳纤维混凝土力学性能的研究.建筑材料学报,2003,6(3):253-256

Jeng F,Lin M L,Yuan S C.Performance of Toughness Indices for Steel Fiber Reinforced Shotcrete.Tunneling and Underground Space Technology,2002,17(1):69-82

[3] 朱海堂,高丹盈,谢丽,等.钢纤维高强混凝土弯曲韧性的研究.硅酸盐学报,2004,32(5):656-660

[4] RILEM TC 162-TDF:Test and Design Methods for Steel Fiber Reinforced Concrete--Bending Test.Materials and Structures/Matriaux et Constructions,2002,35:579-582

[5] RILEM Draft Recommendation TC50-FCM:Determination of Fracture Energy of Mortar and Concrete by Means of Three Point Bend Tests on Notched Beams.Materials and Structures,1985,106(18):285-290

[6] EFNARC Specification and Guidelines for Self-Compacting Concrete

[7] ASTM C1018 Standard Test Method for Flexural Toughness and First Crack Strength of Fiber Reinforced Concrete

[8] JSCE-G 552-1999 The Method for Bending Strength and Bend Toughness of Steel Fiber Reinforced Concrete

[9] Hillerborg A.The Theoretical Basis of a Method to Determine the Fracture Energy GF of Concrete.Materials Structures,1985,106(18):291-296

[10] 田稳苓,黄承逵,李子祥.异形钢纤维粘结机理研究.混凝土与水泥制品,2000(增刊):23-25

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