Title:
Bent Bars in High-Strength Concrete
Author(s):
Kaare K. B. Dahl
Publication:
Symposium Paper
Volume:
121
Issue:
Appears on pages(s):
767-780
Keywords:
bending (reinforcing steels); bent-up bars; compressive strength; cover; high-strength concretes; loads (forces); reinforced concrete; stresses; tests; Structural Research
DOI:
10.14359/2870
Date:
11/1/1990
Abstract:
Presents the results of an investigation undertaken at the Technical University of Denmark to determine the parameters that affect the ultimate load capacity of a concrete structure subjected to concentrated loads originating from reinforcement bars bent 90 deg. The following parameters have been found to have a decisive influence on the ultimate load capacity of the concrete bar: bar diameter, internal height of the specimen, side concrete cover, and concrete compressive strength. The results show that the relative load-carrying capacity of the concrete åc / fc decreases for increasing concrete compressive strength. However, the use of high-strength concrete (HSC) still results in an increase in the absolute load-carrying capacity of the concrete whencompared to normal strength concrete (NSC).