In today’s market, it is imperative to be knowledgeable and have an edge over the competition. ACI members have it…they are engaged, informed, and stay up to date by taking advantage of benefits that ACI membership provides them.
Read more about membership
Become an ACI Member
Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
American Concrete Institute
38800 Country Club Dr.
Farmington Hills, MI
Feedback via Email
Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Tension-Stiffening and Moment-Curvature Relations of Reinforced Concrete Elements
Author(s): G. K. V. Prakhya and C. T. Morley
Publication: Structural Journal
Appears on pages(s): 597-605
Keywords: beams (supports); concrete slabs; cracking (fracturing); moment-curvature relationship; reinforced concrete; reinforcing steels; skewness; stiffness; tension; Structural Research
Abstract:The different parameters that influence the tension stiffening of reinforced concrete are critically examined. A simple equation based on previous experimental results is derived to define the softening characteristics of the concrete and can be used to compute deflections. Reinforcement parameters, such as bar diameter, reinforcement spacing, and cover affect the numerical coefficients in the equation describing the falling branch of the concrete component. Incorporating these material nonlinearities in the tension and compression zones of a two-zone model, moment-curvature relations are developed. The analytical results are verified by comparison with test data. The effect of the resultant tensile force location and magnitude on the overall response of the structure is demonstrated in flexural members with low percentages of reinforcement.
Click here to become an online Journal subscriber