Title:
Bond Strength and Cyclic Bond Deterioration of Large-Diameter Bars
Author(s):
Juan Murcia-Delso, Andreas Stavridis, and P. Benson Shing
Publication:
Structural Journal
Volume:
110
Issue:
4
Appears on pages(s):
659-670
Keywords:
bond; bond-slip; cyclic; development length; large-diameter bars; pullout tests; reinforced concrete; reinforcing bars
DOI:
10.14359/51685751
Date:
7/1/2013
Abstract:
A study on the bond strength and cyclic bond deterioration of large-diameter reinforcing bars embedded in well-confined concrete is presented. The study included monotonic pullout tests and cyclic pull-pull tests conducted on No. 11, No. 14, and No. 18 (36, 43, and 57 mm) reinforcing bars. The bond stress-slip relations obtained from the tests are presented, and the effects of the compressive strength of concrete, bar size, pull direction (for a vertically cast bar), and slip history on the bond strength are examined. Moreover, a phenomenological bond stress-slip law for monotonic and cyclic loading is proposed for bars embedded in well-confined concrete. This law has been validated with experimental results obtained in this study and in previous research.