Bibliographic Details
| Title: |
Dynamic effect of water penetration on steel corrosion in carbonated mortar: A neutron imaging, electrochemical, and modeling study |
| Authors: |
Zhidong Zhang, Pavel Trtik, Fangzhou Ren, Thilo Schmid, Christopher H. Dreimol, Ueli Angst |
| Source: |
Cement, Vol 9, Iss , Pp 100043- (2022) |
| Publisher Information: |
Elsevier, 2022. |
| Publication Year: |
2022 |
| Subject Terms: |
Cement-based materials, Carbonation, Durability, Corrosion, Water imbibition, Microstructure, Cement industries, TP875-888 |
| More Details: |
Carbonation may potentially lead to corrosion of steel bars in reinforced concrete. This concern presents a major barrier against the implementation of sustainable low-clinker cementitious materials in the design of reinforced concrete structures. Various studies have documented the relationship between different equilibrium moisture states in carbonated concrete and the corrosion rate of the embedded steel. However, limited attempts were focused on visually observing the dynamic (time-dependent) behavior of moisture penetration into concrete and the related corrosion state and rate. Moreover, there is a lack of data on the local moisture state in the cementitious matrix in the steel-concrete interfacial zone. In this study, liquid water uptake in carbonated mortar was in-situ and over time monitored by neutron imaging. The corrosion state of embedded steel was monitored by means of electrochemical measurements. This combined experiment revealed that the arrival of the waterfront at the steel surface led to a sharp decrease of the steel potential. The corrosion rate increased from negligibly low values ( |
| Document Type: |
article |
| File Description: |
electronic resource |
| Language: |
English |
| ISSN: |
2666-5492 |
| Relation: |
http://www.sciencedirect.com/science/article/pii/S2666549222000226; https://doaj.org/toc/2666-5492 |
| DOI: |
10.1016/j.cement.2022.100043 |
| Access URL: |
https://doaj.org/article/7d52afa052b94baaa3aa525a2120d1ca |
| Accession Number: |
edsdoj.7d52afa052b94baaa3aa525a2120d1ca |
| Database: |
Directory of Open Access Journals |
