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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.
Showing 1-5 of 12 Abstracts search results
Document:
SP130-03
Date:
January 1, 1992
Author(s):
G. Senkiw
Publication:
Symposium Papers
Volume:
130
Abstract:
Ninety-day load-relaxation tests at room temperature were conducted on a full range of sizes of heavy duty sleeve and lead caulking expansion anchors. The test results showed that the sleeve and lead caulking anchors on the average are able to retain only 60 and 40 percent of their initial tension load, respectively.
DOI:
10.14359/1267
SP130-05
R. Eligehausen
Reinforced concrete structures will generally be cracked under service load due to tensile stresses caused by loads or by the restraint of imposed deformations. Therefore, in general, the design of anchors should be based on the assumption that the concrete is cracked. Under tension loading, anchor behavior is significantly influenced by cracks, depending on the type and design of the anchor. If the failure is caused by concrete cone break-out, the failure load is reduced by approximately 30 to 40 percent compared to the value expected in uncracked concrete. If the failure is caused by pullout (expansion or adhesive anchors), the reduction of the failure load may be much higher. Furthermore, installation inaccuracies may have a very significant negative effect on anchor behavior in cracked concrete. Under shear loading, the behavior of all types of anchors away from edges is not significantly influenced by cracks. The failure load of fastenings close to the edge is reduced by cracks by about 30 percent; however, the reduction is almost independent of the type of anchor. A method for the design of fastenings based on rational engineering models and nonlinear fracture mechanics is proposed. It distinguishes between the different loading directions and failure modes and takes into account all relevant influencing factors.
10.14359/1269
SP130-01
H. Wiewel
Design information for concrete anchors is summarized in this paper. Based on recent research, the tension and shear capacities published in the past for concrete anchors are generally unconservative, especially data for proprietary concrete anchors. This paper recommends new design parameters for seven categories of concrete anchors. The parameters, presented in tabular form, are related to tension zone cracking and seismic loading, as well as spacing and edge distance.
10.14359/1265
SP130-06
R. Orr
Paper describes design examples prepared by Subcommittee 3 of ACI Committee 349 to demonstrate application of Appendix B of the code to the design of steel embedments. The committee report (Reference 1) is included in the 1990 Manual of Concrete Practice. The paper describes some of the design examples and explains key provisions of the code.
10.14359/1270
SP130-04
R. Cook and R. Klingner
A comprehensive research program has been conducted, dealing with ductile, multiple-anchor, steel-to-concrete connections. Based on the results of the program, behavioral models have been formulated for such connections, and design guidelines have been developed. In this paper, the program is summarized, and the principal results are reviewed.
10.14359/1268
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