FLEXURAL BEHAVIOR OF REINFORCED HIGH-STRENGTH LIGHTWEIGHT CONCRETE BEAMS

Flexural tests were conducted on 6 singly reinforced beams. The variables were strength of concrete and the ratio of tensile steel content r as a ratio of the balanced steel content. No compression or lateral reinforcement was used in this study. Test results are presented in terms of load-deformation behavior, ductility indexes, and cracking patterns. It is concluded that to achieve a ductility index of 3, rho/rho sub b should not exceed 0.40 for beams with concrete strengths of 8000 psi or 0.20 for beams with concrete strength of 11,000 psi. The flexural design provisions of the ACI Building Code are found to be adequate to predict the strength of reinforced high-strength concrete beams.

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  • Accession Number: 00603378
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Feb 28 1991 12:00AM