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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: Bond and Anchorage
Author(s): T.D. Mylrea
Publication: Journal Proceedings
Appears on pages(s): 521-552
Abstract:Pull-out resistance of embedded bars and bond strenghth of bars in simple beams are compared. A study of distribution of bond unit stress, and of safety against bond failure in beams of uniform depth stess, and of safety against bond failure in beams of uniform depth indicates the bond formula is safe in most such beamswith bars extending full length. When all bars are full length, there is a definite relaxation between bar length and diameter, beyond which bond unit stress need not be computed. When steel tension is high, permissible bond unit stress is low. Bar extensions and hooks are evaluated according to efficiency as anchors under high bond stress. Suggestions are made as to length of bearing on supports and cut-off points. It is shown that in wedge-shaped beams, brackets, tapered footings and the like, bond formulas now in use may give deceptively low stresses.
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