Chloride ingress and carbonation in concrete exposed to cyclic wetting and drying

Jonathon Backus, Daniel McPolin, Adrian Long, Niall Holmes

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Carbonation and chloride ingress are the two main causes of corrosion in reinforced concrete structures. An investigation to monitor the ingress of chlorides and carbonation during a 9 month wetting and drying exposure regime to simulate conditions in which multiple mode transport mechanisms are active was conducted on a variety of binders. The penetration was evaluated using water and acid soluble chloride profiles, and phenolphthalein indicator. X-ray diffraction was also used to determine the presence of bound chlorides and carbonation. The results indicated that acid extraction of chlorides is quantitatively reliable and practical for assessing penetration. The effect of carbonation on binding capability was observed and the relative quantity of chlorides also showed a correlation with the amount of chlorides bound in the form of Friedel's salt.

Original languageEnglish
Title of host publicationProceedings of the 3rd International Conference on the Durability of Concrete Structures, ICDCS 2012
PublisherHokkaido University Press
ISBN (Print)9781909131040
Publication statusPublished - 2012
Event3rd International Conference on the Durability of Concrete Structures, ICDCS 2012 - Belfast, United Kingdom
Duration: 17 Sep 201219 Sep 2012

Publication series

NameProceedings of the 3rd International Conference on the Durability of Concrete Structures, ICDCS 2012

Conference

Conference3rd International Conference on the Durability of Concrete Structures, ICDCS 2012
Country/TerritoryUnited Kingdom
CityBelfast
Period17/09/1219/09/12

Fingerprint

Dive into the research topics of 'Chloride ingress and carbonation in concrete exposed to cyclic wetting and drying'. Together they form a unique fingerprint.

Cite this