scholarly journals STUDY ON THE EFFECT OF FIBER ORIENTATION TO TENSILE BEHAVIOR OF HPFRCC

2013 ◽  
Vol 78 (692) ◽  
pp. 1673-1678 ◽  
Author(s):  
Kohei ASANO ◽  
Toshiyuki KANAKUBO
Keyword(s):  
Fiber Orientation ◽  
Tensile Behavior

scholarly journals Influence of Fiber Volume Fraction and Fiber Orientation on the Uniaxial Tensile Behavior of Rebar-Reinforced Ultra-High Performance Concrete

Fibers ◽  
2019 ◽  
Vol 7 (7) ◽  
pp. 67 ◽  
Author(s):  
Manish Roy ◽  
Corey Hollmann ◽  
Kay Wille
Keyword(s):  
Fiber Orientation ◽  
High Performance ◽  
Fiber Volume Fraction ◽  
High Performance Concrete ◽  
Volume Fraction ◽  
Tensile Behavior ◽  
Uniaxial Tensile ◽  
Ultra High Performance Concrete ◽  
Load Direction ◽  
Fiber Volume

This paper studied the influence of fiber volume fraction ( V f ), fiber orientation, and type of reinforcement bar (rebar) on the uniaxial tensile behavior of rebar-reinforced strain-hardening ultra-high performance concrete (UHPC). It was observed that the tensile strength increased with the increase in V f . When V f was kept constant at 1%, rebar-reinforced UHPC with fibers aligned with the load direction registered the highest strength and that with fibers oriented perpendicular to the load direction recorded the lowest strength. The strength of the composite with random fibers laid in between. Moreover, the strength, as well as the ductility, increased when the normal strength grade 60 rebars embedded in UHPC were replaced with high strength grade 100 rebars with all other conditions remaining unchanged. In addition, this paper discusses the potential of sudden failure of rebar-reinforced strain hardening UHPC and it is suggested that the composite attains a minimum strain of 1% at the peak stress to enable the members to have sufficient ductility.

scholarly journals Numerical Modeling of UHPFRC Tensile Behavior by a Micromechanics FEM Model Taking into Account Fiber Orientation

2016 ◽  
Author(s):  
Thomas Guénet ◽  
Florent Baby ◽  
Youri Duhamel-Labrecque ◽  
Samuel Meulenyzer ◽  
Luca Sorelli ◽  
...  
Keyword(s):  
Numerical Modeling ◽  
Fiber Orientation ◽  
Tensile Behavior ◽  
Fem Model

Measurement of Local Strains in Intervertebral Disc Anulus Fibrosus Tissue Under Dynamic Shear: Contributions of Matrix Fiber Orientation and Elastin Content

2009 ◽  
Author(s):  
Arthur J. Michalek ◽  
Mark R. Buckley ◽  
Lawrence J. Bonassar ◽  
Itai Cohen ◽  
James C. Iatridis
Keyword(s):  
Intervertebral Disc ◽  
Shear Deformation ◽  
Transverse Shear ◽  
Fiber Orientation ◽  
Tensile Behavior ◽  
Transverse Shear Deformation ◽  
Dynamic Shear ◽  
Anulus Fibrosus ◽  
Scale Down ◽  
Shear Strains

Physiological levels of bending and flexion of the intervertebral disc are known to result in large shear strains of the anulus fibrosus (AF) tissue [1]. While microstructural shear is often implicated as a likely failure initiator [2], it is unclear what series of cascading mechanisms act to transfer shear from the tissue scale down to the micron scale. In particular, a consensus has yet to be reached on the degree to which interlamellar sliding contributes to transverse shear deformation. Elastin plays an important role in radial tensile behavior of the AF [3], however its function in shear has not been investigated.

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