Influence of Aspect Ratio of Hooked End Steel Fiber on Flexural Behavior of Fiber Reinforced Concrete

2014 ◽  
Vol 629-630 ◽  
pp. 560-564
Author(s):  
Kun Ni ◽  
Yun Xing Shi ◽  
Yi Ning Ding ◽  
Yan Gang Zhang ◽  
Jing Bin Shi ◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
Aspect Ratio ◽  
Flexural Strength ◽  
Steel Fiber ◽  
Fiber Reinforced Concrete ◽  
Steel Fibers ◽  
Flexural Behavior ◽  
Flexural Toughness ◽  
Three Point Bending ◽  
Rilem Recommendation

The aim of present work is to further investigate the flexural behavior of FRC with four types of hooked end steel fibers. The flexural toughness of FRC beams was tested under a three point bending system, and the data of experiments were analyzed according to the standard JGJ/T221-2010 and RILEM recommendation. The results showed equal dosage of different aspect ratio fibers didn’t result in the same flexural toughness. It was found that nominal ultimate flexural strength () and equivalent flexural strength () of beams increased as aspect ratio of the steel fiber was increased. However, the highest equivalent flexural strength () was obtained by the fiber with aspect ratio of 67.

scholarly journals Influence of Tire-Recycled Steel Fibers on Strength and Flexural Behavior of Reinforced Concrete

2020 ◽  
Vol 2020 ◽  
pp. 1-7
Author(s):  
Yancong Zhang ◽  
Lingling Gao
Keyword(s):  
Reinforced Concrete ◽  
Steel Fiber ◽  
Plastic Material ◽  
Fiber Reinforced Concrete ◽  
Steel Fibers ◽  
Flexural Behavior ◽  
Fiber Reinforced ◽  
Steel Fiber Reinforced Concrete ◽  
Flexural Toughness ◽  
Recycled Steel

Tire production is increasing every year due to the increase in vehicle sales. The generation and disposal of waste are inherent to life itself and have presented very serious problems to the human community in China. Recently, some research has been devoted to the use of tire-recycled steel fibers in concrete. This study is focusing on the use of tire-recycled steel fibers. Several volume ratios of tire-recycled steel fibers were used in concrete mix to fabricate and test. Reinforced concrete obtains evidence and satisfactory improvement by adding tire-recycled steel fibers, mostly in compressive strength, splitting strength, flexural tensile strength, and flexural toughness. The strength and flexural toughness of the tire-recycled steel fiber reinforced concrete are lower than those of industrial steel fibers. To obtain concrete with approximately the same strength or toughness, the content of tire-recycled steel fibers should be about 1%-2% higher than that of industrial steel fibers. In addition, the load-deflection curve tends to become fuller after the first crack, and the second peak of the load continues to increase. The steel fiber reinforced concrete is getting closer to the ideal elastic-plastic material.

Experimental Study on Flexural Toughness of SFRC

2012 ◽  
Vol 238 ◽  
pp. 33-36 ◽  
Author(s):  
Chang Yong Li ◽  
Li Sha Song ◽  
Li Sun ◽  
Chen Jie Cao ◽  
Tong Xing
Keyword(s):  
Flexural Strength ◽  
Cement Paste ◽  
Steel Fiber ◽  
Design Method ◽  
Fiber Reinforced Concrete ◽  
Steel Fibers ◽  
Test Results ◽  
Steel Fiber Reinforced Concrete ◽  
Flexural Toughness ◽  
Flexural Performance

This paper introduces the test results of the flexural performance of CF40 steel fiber reinforced concrete (SFRC) designed by the binary superposition mix design method. The flexural strength and flexural load ~ deflection curves were got from the test SFRC specimens with the different fraction of steel fiber by volume and the different thickness of cement paste wrapping steel fibers. The effects of the fraction of steel fiber by volume and the thickness of cement paste on the flexural strength and toughness of SFRC are analyzed. It is demonstrated that the flexural toughness of SFRC increases with the increase of the fraction of steel fiber by volume, the reasonable thickness of cement paste wrapping steel fibers is 1.0mm.

scholarly journals Flexural Behaviour of Reinforced Concrete Beam by using Steel Fibres & Glass Fibres

2019 ◽  
Vol 8 (12S) ◽  
pp. 1045-1050
Keyword(s):  
Reinforced Concrete ◽  
Flexural Strength ◽  
Compression Test ◽  
Concrete Beam ◽  
Steel Fiber ◽  
Glass Fibers ◽  
Reinforced Concrete Beam ◽  
Fiber Reinforced Concrete ◽  
Flexural Behavior ◽  
Fiber Reinforced

The work aims to compare the flexural behavior of concrete beam using addition of steel fibers and glass fibers with normal beam in M30 grade concrete and to find the cracks developed in the concrete beam. Experiments include Compression test, Tensile strength and Flexural strength. In this study the performance of fiber reinforced concrete(FRC) beams under two- point loading system is discussed and comparative studies were made with normal mix concrete. In this study, we are casted the cube for 7 days and beam only for 28 days. The percentage addition by mass of cement for steel fiber is 1.5 % and percentage addition by mass of coarse aggregate for glass fiber is 1%. We are going to compare the results of compression test as well as flexural strength to normal concrete through different( 1.5 and 1) percentages. Final results, the comparison of normal beam to addition of fiber reinforced concrete beam, the maximum flexural strength is found in addition of steel fiber in concrete beam.

Flexural Behavior of Steel Fiber Reinforced Concrete Shield Tunnel Segment

2017 ◽  
Vol 263 ◽  
pp. 12-17
Author(s):  
Fa Sheng Zhang ◽  
Yun Xing Shi ◽  
Jing Bin Shi ◽  
Kun Ni ◽  
Yan Gang Zhang ◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
Steel Fiber ◽  
Fiber Reinforced Concrete ◽  
Steel Fibers ◽  
Flexural Behavior ◽  
Scale Model ◽  
Shield Tunnel ◽  
Fiber Reinforced ◽  
Steel Fiber Reinforced Concrete ◽  
Reduced Scale

In order to study the flexural behavior of steel fiber reinforced concrete (SFRC) shield tunnel segment, two full scale shield tunnel segments and twelve reduced scale shield tunnel segments were made and tested. Based on the experiment study, the effectiveness of reduced scale segment was analyzed. Meanwhile, based on the fail mode, load-deflection curves and crack width, the part substitution of steel reinforcement by steel fibers was studied. Test results showed that the reduced scale model can reflect the flexural behavior of full scales tunnel segment and 45kg/m3 steel fibers of 3D type can replace 17% longitudinal reinforcement and 70% stirrups.

On axial compressive behavior of steel fiber reinforced concrete confined by FRP

2021 ◽  
pp. 136943322098165
Author(s):  
Hossein Saberi ◽  
Farzad Hatami ◽  
Alireza Rahai
Keyword(s):  
Reinforced Concrete ◽  
Experimental Test ◽  
Steel Fiber ◽  
Experimental Tests ◽  
Fiber Reinforced Concrete ◽  
Steel Fibers ◽  
Test Results ◽  
Fiber Reinforced ◽  
Steel Fiber Reinforced Concrete ◽  
Frp Confinement

In this study, the co-effects of steel fibers and FRP confinement on the concrete behavior under the axial compression load are investigated. Thus, the experimental tests were conducted on 18 steel fiber-reinforced concrete (SFRC) specimens confined by FRP. Moreover, 24 existing experimental test results of FRP-confined specimens tested under axial compression are gathered to compile a reliable database for developing a mathematical model. In the conducted experimental tests, the concrete strength was varied as 26 MPa and 32.5 MPa and the steel fiber content was varied as 0.0%, 1.5%, and 3%. The specimens were confined with one and two layers of glass fiber reinforced polymer (GFRP) sheet. The experimental test results show that simultaneously using the steel fibers and FRP confinement in concrete not only significantly increases the peak strength and ultimate strain of concrete but also solves the issue of sudden failure in the FRP-confined concrete. The simulations confirm that the results of the proposed model are in good agreement with those of experimental tests.

Experimental Research on Reinforcing Effect of Spiral Steel Fiber

2012 ◽  
Vol 174-177 ◽  
pp. 668-671
Author(s):  
He Ting Zhou
Keyword(s):  
Reinforced Concrete ◽  
Bond Strength ◽  
Experimental Research ◽  
Significant Role ◽  
Steel Fiber ◽  
Cement Mortar ◽  
Fiber Reinforced Concrete ◽  
Steel Fibers ◽  
Steel Fiber Reinforced Concrete ◽  
Reinforcing Effect

Steel fiber has a fine nature in reinforcing concrete. This essay aims to find out the influence of physical forms of steel fiber on its nature of reinforcement. By comparing two types of cement mortar reinforced by steel fibers, it is found that spiral steel fibers have a better bond strength with matrix than straight ones. Therefore, a conclusion could be drawn that physical forms of the steel fiber play a significant role in steel fiber reinforced concrete, and the experiment also serves a rewarding reference to the application of spiral steel fibers.

scholarly journals ANALYSIS OF PROPERTIES OF CONCRETE USING STEEL FIBERS AS FIBER REINFORCEMENT ADMIXTURE

2017 ◽  
Vol 5 (4RASM) ◽  
pp. 59-62
Author(s):  
Vishal Gadgihalli ◽  
Meena ◽  
Sindu ◽  
Raghavendra Prasad Dinakar
Keyword(s):  
Reinforced Concrete ◽  
Flexural Strength ◽  
Steel Fibre ◽  
Fiber Reinforcement ◽  
Paper Analysis ◽  
Fiber Reinforced Concrete ◽  
Steel Fibers ◽  
Fiber Reinforced ◽  
Different Types ◽  
Discrete Uniform

Fiber reinforced concrete is composite material consisting of mixtures of cement, mortar or concrete, discontinuous discrete uniform dispersed suitable fibers. Fiber reinforced concrete are of different types and properties. In this paper analysis of properties of concrete using steel fibre as fiber reinforcement admixture is studied and verified the strength of concrete to normal plane concrete with absence of admixtures. Using steel fibers as fiber reinforcement admixture increases bond strength by enhancing surface tension as steel is better in taking flexural strength this gives better results, hence we can use this steel fiber reinforcement to concrete where the compressive and flexural strength place a crucial role in construction and maintenance.

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