Title: Reinforced Concrete Jacketing--Interface Influence on Cyclic Loading Response

Author(s): Eduardo N. B. S. Julio and Fernando A. B. Branco

Publication: Structural Journal

Volume: 105

Issue: 4

Appears on pages(s): 471-477

Keywords: cyclic loading; interface; jacketing; seismic response; strengthening; surface preparation

DOI: 10.14359/19861

Date: 7/1/2008

Abstract:
Following previous studies, the authors describe an experimental study performed to analyze the influence of the interface treatment on the seismic behavior of columns strengthened by reinforced concrete (RC) jacketing to increase their ultimate bending moment. A numerical study, subsequently conducted to further investigate this subject, is also presented. It has been concluded that, for undamaged columns with a bending moment/shear force ratio greater than 1.0, it is not necessary to consider any type of interface treatment before casting a RC jacket with a thickness less than 17.5% of the column width to obtain a monolithic behavior of the composite element.