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: Investigation of the Parameters
Influencing Bond Cracking
Author(s): E. L. Kemp and W. J. Wilhelm
Publication: Journal Proceedings
Appears on pages(s): 47-72
Keywords: beams (supports); bond (concrete to reinforcement); bond stress; cracking (fracturing);deformed reinforcement; dowels; embedment; reinforced concrete; reinforcing steels; shear properties; structural design; tensile stress.
Abstract:The advent of large high tensile reinforcing bars has caused concern among engineers and stimulated research into the nature of bond and particularly the problem of longitudinal bond splitting. This recent research indicates that bond splitting is a complicated phenomenon involving interactions with shear and flexure and in-fluenced by cover, bar spacing, number of bars, specimen width, dowel forces, and other secondary effects. An extensive program has been carried out at West Virginia University to study, systematically, the various parameters influencing bond behavior in an effort to develop new design criteria at both the ultimate strength and working load stages. The paper is concerned with the central problem of longitudinal bond splitting. This phenomenon is discussed in terms of the parameters studied at West Virginia University, namely, bar cover and spacing, the influence of stirrups, and the bond/shear ratio. Based upon the current status of the research, tentative design criteria are presented for both the cracking and ultimate load limit states.
Click here to become an online Journal subscriber