EXPERIMENTAL STUDY OF CORROSION-INDUCED DEGRADATION OF REINFORCED CONCRETE ELEMENTS

Author(s): Olaf Loukil, Lucas Adelaide, Véronique Bouteiller, Marc Quiertant, Thierry
Chaussadent, Frédéric Ragueneau, Xavier Bourbon, Laurent Trenty
Paper category: Proceedings
Book title: proceedings of the International RILEM Conference on Materials, Systems and Structures in Civil Engineering Conference segment on Service Life of Cement-Based Materials and Structures
Editor(s): Miguel Azenha, Ivan Gabrijel, Dirk Schlicke, Terje Kanstad and Ole Mejlhede Jensen
ISBN:978-2-35158-170-4
e-ISBN: 978-2-35158-173-5
Publisher: RILEM Publications SARL
Publication year: 2016
Pages: 112-121
Total Pages: 9
Language : English

Abstract: Corrosion of steel reinforcement is the main cause of damage for reinforced concrete
structures. Iron oxides produced during the corrosion process can induce concrete cracking,
loss of adhesion at the steel-concrete interface, loss of reinforcing bar cross-section and even
spalling of the concrete cover. In the presented research, the durability problems related to the
corrosion of the reinforcement are investigated by combining experimental and numerical
studies. However, this paper particularly focuses on the experimental methodology used for
the time evolution of damages (steel corrosion products formation and crack patterns) induced
by the accelerated corrosion test. The accelerated corrosion tests were carried out by applying
a constant current between reinforcement used as an anode and a counter electrode. To control
the corrosion process, electrochemical parameters (such as free corrosion potential,
polarization resistance, electrical concrete resistance) were measured. The purpose of this
paper is to determine the width and length of the cracks and their orientation according to the
current density and time.

Online publication : 2016
Publication type : full_text
Public price (Euros) : 0.00