EFFECT OF CONFINEMENT AND CONCRETE STRENGTH UPON CRACK BEHAVIOR INDUCED BY CORROSION-PRODUCT EXPANSION

Author(s): Shinohara, Y. and Aryanto, A.
Paper category: Conference
Book title: XIII International Conference on Durability of Building Materials and Components - XIII DBMC
Editor(s): Marco Quattrone, Vanderley M. John
Print ISBN: none
e-ISBN: 978-2-35158-149-0
Publication year: 2015
Pages: 417-424
Total Pages: 8
Language: English

Abstract: Corrosion has known as a major problem on deterioration of RC structures because it may induce cracking of concrete cover as well as bond deterioration. Most of studies on the cracking behaviors have used single bar in a concrete prism or a cylinder and absence of stirrup bars, which may not represent the real boundary condition of reinforced concrete structures. The main objective of this paper is to investigate the influence of stirrup confinement, longitudinal bar diameter, concrete strength and corrosion rate on the cover crack propagation. Six beams were prepared, and designed to experience a specified corrosion by performing an accelerated corrosion through the electrochemical process. The current flowed on each bar and the strains on the stirrups were recorded using data logger. The corrosion-crack behavior was frequently observed using digital microscope with the resolution of 0.01mm. Furthermore, finite element analysis was performed to study the internal cracking behaviors and the bond-slip relationship between concrete and stirrups.

Online publication: 2015
Publication Type: full_text
Public price (Euros): 0.00