Development length of unconfined conventional and high-strength steel reinforcing bars
The development length equation specified by ACI 318-08 and the similar equation recommended by ACI 408R-03 are based on extensive test results using conventional reinforcement conforming to ASTM A615/A615M and A706/A706M. With the development of new ASTM A1035/A1035M high-strength steel reinforcement, several studies have been conducted to examine whether the current equations are applicable for the new high-strength reinforcing steel. These studies have shown that the current equations could, in some cases, overestimate the bond strength of high-strength steel bars. This paper proposes a new equation for the bond strength of unconfined reinforcing bars for all three types of steel. The proposed equation for high-strength steel is compared to extensive test data reported in the literature and is found to be more accurate than ACI 318-08 and ACI408R-03 equations specified for conventional reinforcement.
-
Availability:
- Find a library where document is available. Order URL: http://worldcat.org/oclc/13846957
-
Supplemental Notes:
- Abstract reprinted with permission from the American Concrete Institute
-
Authors:
- Hosny, Amr
- Seliem, Hatem M
- Rizkalla, Sami H
- Zia, Paul
- Publication Date: 2012-9
Language
- English
Media Info
- Media Type: Print
- Features: Appendices; Figures; References; Tables;
- Pagination: pp 655-664
-
Serial:
- ACI Structural Journal
- Volume: 109
- Issue Number: 5
- Publisher: American Concrete Institute (ACI)
- ISSN: 0889-3241
- Serial URL: http://www.concrete.org/PUBS/JOURNALS/SJHOME.ASP
Subject/Index Terms
- TRT Terms: Bond strength (Materials); High strength steel; Material reinforcement; Reinforcing bars
- Uncontrolled Terms: Splice length
- Subject Areas: Bridges and other structures; Design; Highways; Materials; I24: Design of Bridges and Retaining Walls; I34: Steels and Metals;
Filing Info
- Accession Number: 01453685
- Record Type: Publication
- Files: TRIS
- Created Date: Nov 15 2012 12:32PM