Influence of 2D Chloride Ingress on Corrosion Initiation and Propagation in Cracked and Uncracked Concrete: A Critical Literature Review

Author(s): Ze G. Zakka and Mike B. Otieno
Paper category: Proceedings
Book title: Proceedings of International Conferences (ICACMS) Advances in Construction Materials and systems Vol 2
Editor(s): Manu Santhanam, Ravindra Gettu, Radhakrishna G. Pillai, Sunitha K. Nayar
ISBN: 978-2-35158-194-0
e-ISBN: 978-2-35158-191-9
Publisher: RILEM Publications SARL
Publication year: 2017
Pages: 502-509
Total Pages: 8
Language : English

Abstract: Many studies undertaken on chloride-induced corrosion in steel reinforced concrete (RC) corrosion have focused on one-dimensional (1D) chloride penetration; where the RC is exposed to penetration of chlorides from only one face. The findings of 1D chloride penetration studies though useful, may not rightly depict the deterioration of steel reinforcement bars located at corners of rectangular shaped RC elements in-service condition as they are mostly exposed to two-dimension (2D) chloride penetration. This paper presents a review of findings on the effect of chloride ingress paths (1D and 2D) on chloride penetration rate, binder type, time-to-corrosion initiation, cover cracks, and corrosion damage in relation to diameter and cover depth of steel reinforcement. The review also brings the need for determining the effect of 2D chloride ingress on the corrosion rate of corner located steel reinforcement bars in cracked and uncracked concrete using various binders (FA and GGBS). The determination of the corrosion rate is explored due to its influence on the service life of steel RC components after corrosion initiation. Areas of further research are highlighted along with a brief outline of the experimental setup for this research work.

Online publication : 2017
Publication type : full_text
Public price (Euros) : 0.00