Title:
Flexural Behavior of Doubly Reinforced High-Strength Lightweight Concrete Beams With Web Reinforcement
Author(s):
Shuaib H. Ahmad and Jaime Batts
Publication:
Structural Journal
Volume:
88
Issue:
3
Appears on pages(s):
351-358
Keywords:
beams (supports); flexural tests; high-strength concretes; ductility; lightweight concretes; web reinforcement; Structural Research
DOI:
10.14359/2745
Date:
5/1/1991
Abstract:
The use of lightweight concrete of higher compressive strengths is increasing faster than the development of appropriate design recommendations. This paper develops limited experimental data on the flexural behavior of doubly reinforced high-strength lightweight concrete beams with web reinforcement. Flexural tests were conducted on six doubly reinforced beams. The ratio of the compression to tension reinforcement was kept at 0.5 and the stirrups were placed at spacings of half the depth of the section. The variables were strength of concrete and the ratio of tensile steel content as a ratio of the balanced steel content. The test results are presented in terms of load-deformation behavior, cracking, and ductility indexes. The experimentally obtained load-deflection curves are compared to those predicted analytically, and good comparisons are obtained.