Minimum steel ratios in reinforced concrete beams made of concrete with different strength - Theoretical approach

Title: Minimum steel ratios in reinforced concrete beams made of concrete with different strength - Theoretical approach
Author(s): I. A.E. M. Shehata, L. C. D. Shehata, S. L. G. Garcia
Paper category : journal
Serial title: Materials and Structures
Abreviated Serial title: Mater. Struct.
ISSN: 1359-5997
Publisher: RILEM Publications SARL
Volume: 36
Issue: 255
Issue date: 2003-01-01
Publication year: 2003
Pages: 3 - 11
Total Pages: 9
Nb references: 15
Language: English

Abstract: Minimum reinforcement is provided in concrete beams in order to improve their behaviour towards cracking and ductility at failure.
Generally,codes of practice equations for the minimum steel ratios,longitudinal and transversal,are mainly empirical and do not include all the inf luential parameters in them.
For this reason and due to the fact that they do lack of a theoretical background,different codes can give values for the minimum steel ratios that greatly differs from one another.
Also the validity of these equations may be questioned particularly in the case of high strength concrete beams and prestressed concrete beams for which limited test data are available.
In this work,a theoretical approach for the minimum steel ratios that are required for the ductile behaviour at failure in bending,shear and torsion,in concrete beams made of concrete with different strengths is presented.
Comparisons are also made between the proposed expressions,the codes expressions and available test results.

Online publication: 2002-11-27
Classification: Scientific Reports
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/13825