Reinforcement limits for reinforced concrete elements with high-strength steel
Journal
ACI Structural Journal
Journal Volume
116
Journal Issue
5
Pages
201-212
Date Issued
2019
Author(s)
Abstract
Building codes control the minimum and maximum amounts of longitudinal reinforcement in reinforced concrete (RC) elements to avoid brittle failure. A two-phase experimental investigation was conducted to reexamine the existing limits to allow the use of high-strength steel reinforcement (HSSR) with fy > 80 ksi (550 MPa). The test results suggested that it is feasible to use HSSR (with fy up to 120 ksi [830 MPa]). Careful projection of existing limits to HSSR produced elements with similar toughness as those with conventional reinforcement (Grade 60, fy = 60 ksi [415 MPa]). The results presented also supported code provisions to allow the use of HSSR introduced in ACI 318-19. Copyright ? 2019, American Concrete Institute. All rights reserved,
Subjects
Building codes; High performance concrete; High strength steel; Brittle failures; Experimental investigations; Longitudinal reinforcement; Reinforced concrete elements; Two phase; Reinforced concrete
SDGs
Type
journal article