Title:
Shear Strength of Steel Fiber-Reinforced Concrete Beams and One-Way Slabs
Author(s):
Sergio M. Alcocer, Ghassan Almasabha, Julian Carrillo, Shih-Ho Chao, and Adam S. Lubell
Publication:
Structural Journal
Volume:
122
Issue:
1
Appears on pages(s):
103-115
Keywords:
beams; fiber-volume fraction; lightweight concrete (LWC); minimum shear reinforcement; normalweight concrete (NWC); one-way slabs; shear; size effect; steel fibers
DOI:
10.14359/51742138
Date:
1/1/2025
Abstract:
Recent research data was evaluated with the aim of extending the
applicability of using deformed steel fiber-reinforced concrete
(SFRC) to enhance the shear strength of beams and one-way
slabs. Experimental results were assessed for influences on the
shear strength of SFRC members that do not contain stirrups of
factors, including size effect, concrete density (normalweight
and lightweight) and compressive strength, fiber-volume fraction
(Vf), and the longitudinal steel reinforcement ratio. Estimates of
steel stresses in longitudinal bars at the time of shear failure were
carried out to identify differences in members with distinct longitudinal steel ratios and bar grades, consistent with the range of
flexural design parameters in ACI 318-19. Results of these analyses
and a reliability investigation of design equations applicable to
members without fibers were used for proposing new provisions for
the shear design of SFRC beams and one-way slabs based on the
ACI 318-19 shear-strength model.