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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.
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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: Lapped Splices For High Strength Reinforcing Bars
Author(s): Phil M. Ferguson and John E. Breen
Publication: Journal Proceedings
Appears on pages(s): 1063-1078
Keywords: beam, bond strength, cracking, high strength steel, lapped splice, reinforced concrete, research, splice
Abstract:Tests of 35 beams, each containing lapped splices of # 8 or # 11 bars of high strength steel in a constant moment region, are reported. Splices with # 11 bars behaved exceptionally well, developing bond stresses slightly higher than the # 8 bars and indicating that the ACI Code splice provisions for # 11 bars are a little severe. The shape of the steel stress-strain curve had little influence on splice strength. No loss in bond strength developed when steel -strains as high as 0.006 to 0.009 were reached. One # 11 bar specimen at a steel strain of 0.011 developed lower bond resistance but a # 8 bar specimen at 0.012 strain showed no such effect. The few beams having stirrups over the splices gave higher strengths, but the main study was related to splices without stirrups.
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