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
Chat with Us Online Now
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: Determining Time Dependent Losses Of Prestress with Due Consideration of Aging Coefficient and Percentage of Steel
Author(s): T. K. Bandyopadhyay and B. Sengupta
Publication: Journal Proceedings
Appears on pages(s): 236-243
Keywords: age; creep properties; modulus of elasticity; prestressed concrete; prestressing steels; prestress loss; stiffness.
Abstract:Aging coefficient has been calculated by a numerical method using a step-by-step approach. The method takes the following into account to attain an unbounded value of creep strain: effect of steel ratio, stiffness coefficient of the member, creep coefficient, concrete aging, and variation of modulus of elasticity of concrete. The calculations are extended to determine the loss in steel stress, showing clearly the accuracy achieved due to the consideration of proper aging coefficient accounting for the reinforcement present which is normally not given due attention. A few steps of the approach are included in the Appendix to show the steps followed for arriving at final values us-ing a Burroughs 6700 computer.
Click here to become an online Journal subscriber