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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: Spacing of Spliced Bars in Tension Pull-Out Specimens
Author(s): S. J. Chamberlin
Publication: Journal Proceedings
Appears on pages(s): 261-274
Keywords: no keywords
Abstract:The effect of spacing of parallel bars was investigated with tension pull-out specimens. Prisms of concrete, square in cross section and of variable length, contained three bars; one bar was embedded along the vertical axis and ex-tended downward, two other bars paralleled the center bar and extended up-ward. Slip of the center bar was measured at both the loaded and free end. Symmetrical spacing between the bars, from adjacent-tied to a clear seperation, of three bar diameters, was the major variable. Three different concretes and three types of bar-plain, one type of old-style deformed, and one type of new high-bond-were included. Results indicate that-the bond of plain bars is not appreciably affected by spacing of the bars. Bars having ono type of old-style deformations and bars having one type of deformation meeting current requirements for deformed bars developed better average bond stresses in adjacent-tied splices even without mechanical interlock than in spaced splices. Spacings, other than adjacent-tied, do not appear to affect bond significantly.
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