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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: Cracking on the Side Faces of Large Reinforced
Author(s): Gregory C. Frantz and John E. Breen
Publication: Journal Proceedings
Appears on pages(s): 307-313
Keywords: beams (supports); bending; bridges (structures); cracking (fracturing);
crack width and spacing; loads (forces); maintenance; reinforced concrete;reinforcing steels; specimens;tests;welded wire fabric.
Abstract:Test results and observations of several large reinforced concrete beams have questioned the effectiveness of the present design provisions concerning side face crack control reinforcement for large beams. Forty-four laboratory size specimens were tested to study how skin reinforcement affects side face cracking. Variables included amount, location, distribution, cover, and type of skin reinforcement, web width, and beam depth. Test results indicate that the present provisions are not adequate. Skin reinforcement affects only a narrow strip of concrete along each side face and is not dependent on the web width. The effectiveness of skin reinforcement in con trolling cracking can be related to a simple skin reinforcement ratio. As the beam depth increases, the skin reinforcement ratio required to provide the same degree of crack control also increases.
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