NEHRP Clearinghouse
 Title
 Complete StressStrain Curve of Concrete and Its Effect on Ductility of Reinforced Concrete Members.
 File

PB272836.pdf
 Author(s)
 Wang, P. T.; Shah, S. P.; Naaman, A. E.
 Source

National Science Foundation, Washington, D.C.,
October 1977,
276 p.
 Identifying Number(s)
 772
 Abstract
 A relatively simple experimental technique was developed to obtain the entire stressstrain curve of concrete. The experimental curves were obtained for normal weight concrete of compressive strengths up to 11,000 psi and lightweight concrete of strengths up to 8,000 psi. An analytic expression for the stressstrain curve is proposed. The expression has four constants which depend on the properties of both the ascending and the descending portions of the curve. A computerized nonlinear analysis program was developed to predict the structural response of reinforced concrete on the ultimate strength parameters of the concrete compressive zone.
 Keywords
 Nonlinear analysis; Stress strain diagrams; Reinforced concrete; Reinforcing steels; Earthquake engineering; Computer programs; Loads (Forces); Ductility; Compressive strength