SENSITIVITY ANALYSIS FOR PREDICTION OF CORROSION INITIATION BY CARBONATION

Author(s): Van-Loc TA, Stéphanie BONNET, Tristan SENGA KIESSE, Anne VENTURA
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:978-2-35158-171-4
e-ISBN: 978-2-35158-173-5
Publisher: RILEM Publications SARL
Publication year: 2016
Pages: 533-542
Total Pages: 10
Language : English

Abstract: Corrosion of reinforcement in concrete is the main cause for deterioration of reinforced
concrete (RC) structures. In this paper, sensitivity analysis (SA) are carried out to determine
the influence of input parameters involved in corrosion initiation model on the corrosion
initiation time, ticor . This method is applied to a RC structure with class C30/37 concrete
using CEM I 32.5N exposed in class XC4. The concrete cover depth, initial curing period
linked to technological parameters; cement content linked to concrete mixtures; ambient
temperature linked to environmental exposure conditions. They are found to be most
influential on the time ticor ; whereas, the physical and chemical characteristics of cement type
CEM I 32.5N, sable, gravel contents and the maximum aggregate size used are found to be
less influential on the time. In order to improve the durability of RC structures using
CEM I 32.5N with regards to carbonation, the best choices are required for the concrete cover
depth, the initial curing period, cement content and water to cement ratio.

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