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.
ACI World Headquarters
38800 Country Club Dr.
Farmington Hills, MI
ACI Middle East Regional Office
Second Floor, Office # 02.01/07
The Offices 02 Building, One Central
Dubai World Trade Center Complex
Phone: +971.4.516.3208 & 3209
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: Shrinkage and Creep Influence on Deflections and Moments of Reinforced Concrete Beams
Author(s): Hans Gesund
Publication: Journal Proceedings
Appears on pages(s): 687-704
Abstract:The long term deflection behavior within the working load range of reinforced concrete beams is analyzed. The effects of creep and shrinkage are included by resolving the total compressive strain into its constituent parts. It is shown that, due to shrinkage, the planes of zero stress and zero strain no longer coincide in the beam, and that their locations depend on the concrete stress and thus on the moment. The nonlinear relations between moments and stresses are then derived. Fortunately, it turns out that the relation between moment and the sum of the strains remains almost linear and can often be expressed by AM + B = zc where A and B are essentially constant for large ranges of M. The above expression can be integrated with various boundary conditions to obtain deflections of simple beams, and fixed-end moments and deflections of statically indeterminate beams. Due to the second constant, B, in the equation, a part of the deflection is shown to be inde-pendent of the load.
Click here to become an online Journal subscriber