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 language | English |
|---|---|
| Title of host publication | Proceedings for 3rd International Conference on the Durability of Concrete Structures |
| Publisher | Queen's University Belfast |
| Number of pages | 8 |
| Publication status | Published - 17 Sep 2012 |
| Event | 3rd International Conference on the Durability of Concrete Structures - Queen's University, Belfast, United Kingdom Duration: 17 Sep 2012 → 19 Sep 2012 |
Conference
| Conference | 3rd International Conference on the Durability of Concrete Structures |
|---|---|
| Country | United Kingdom |
| City | Belfast |
| Period | 17/09/2012 → 19/09/2012 |
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Cite this
Backus, J., McPolin, D., Long, A., & Holmes, N. (2012). Chloride ingress and carbonation in concrete exposed to cyclic wetting and drying. In Proceedings for 3rd International Conference on the Durability of Concrete Structures Queen's University Belfast. http://www.qub.ac.uk/sites/ICDCS2012/