Authors :
Dr. Haitham Hasan Muteb Aldaami; Jenan N. Almusawi
Volume/Issue :
Volume 6 - 2021, Issue 12 - December
Google Scholar :
http://bitly.ws/gu88
Scribd :
https://bit.ly/3KJeKz0
DOI :
https://doi.org/10.5281/zenodo.5875196
Abstract :
Steel fiber reinforced concrete's stress-strain
characteristics and compression elastic modulus are key
in structural analysis and design. The purpose of this
research is to explore the stress-strain behavior and
modulus of elasticity of steel fiber reinforced concrete
(SFRC) and normal concrete (NC) in order to
experimentally assess their compression-stress behavior.
The SFRC was reinforced with straight steel fibers with a
nominal length of (13 mm), diameter of (0.2 mm), and
aspect ratio (length of the fiber to the diameter of the
fiber) was about (65). For the purposes of this experiment,
the volume fraction was fixed to 1%, and normal concrete
was used as a reference. When fiber is added to concrete,
the ultimate stress, ultimate strain, toughness, and the
modulus of elasticity were increased. As shown in an
experiment, the SFRC had a very high values of strain
capacity which was about (74.51%) more than that for
NC, indicating that it had high ductility. Also a
comparison was carried out between the experimental
resultsof modulus of elasticity and the pervious
theoretical proposed equations for SFRC and NC,the test
resultsshowed a good agreement compared with the
results of the theoretical equations.
Steel fiber reinforced concrete's stress-strain
characteristics and compression elastic modulus are key
in structural analysis and design. The purpose of this
research is to explore the stress-strain behavior and
modulus of elasticity of steel fiber reinforced concrete
(SFRC) and normal concrete (NC) in order to
experimentally assess their compression-stress behavior.
The SFRC was reinforced with straight steel fibers with a
nominal length of (13 mm), diameter of (0.2 mm), and
aspect ratio (length of the fiber to the diameter of the
fiber) was about (65). For the purposes of this experiment,
the volume fraction was fixed to 1%, and normal concrete
was used as a reference. When fiber is added to concrete,
the ultimate stress, ultimate strain, toughness, and the
modulus of elasticity were increased. As shown in an
experiment, the SFRC had a very high values of strain
capacity which was about (74.51%) more than that for
NC, indicating that it had high ductility. Also a
comparison was carried out between the experimental
resultsof modulus of elasticity and the pervious
theoretical proposed equations for SFRC and NC,the test
resultsshowed a good agreement compared with the
results of the theoretical equations.
