9. Impact of moisture paramaters on the chloride induced corrosion in concrete rebars

Title: 9. Impact of moisture paramaters on the chloride induced corrosion in concrete rebars
Author(s): S. Charles, S. Poyet, V. L'Hostis
Paper category : conference
Book title: NUCPERF 2009 - Long Term Performance of Cementitious Barriers and Reinforced Concrete in Nuclear Power Plants and Waste Management
Editor(s): V. L'Hostis, R. Gens, C. Gallé
Print-ISBN: 978-2-35158-072-1
e-ISBN: 978-2-35158-087-5
Publisher: RILEM Publications SARL
Publication year: 2009
Pages: 79 - 87
Total Pages: 9
Nb references: 10
Language: English

Abstract: In order to study the impact of drying on the chloride induced corrosion in concrete, a concrete reinforced beam, which was stored 40 years in a marine environment, has been investigated. After bringing it to the lab, initially water saturated, the beam was cut into four specimens. All the sides of each specimen were covered with epoxy resin except the bottom side in order to dry only according to one direction. Thermohydric probes were inserted inside one specimen at different depths from the bottom side allowing to get humidity profiles. The four specimens are destroyed at regular intervals to quantify the impact of drying on the corrosion level. On one specimen, concrete cores were sampled in order to measure moisture transport parameters which could serve to simulate the drying. The other specimens were used for to concrete chemical and physical properties characterization, as well as the corrosion evaluation.

Online publication: 2009-11-16
Publication type : full_text
Public price (Euros): 0.00