Thumbnail Image
Publication

Nano TiO2-engineered anti-corrosion concrete for sewage system

Li, Zhen
; 
Ding, Siqi
; 
Kong, Lijuan
; 
Wang, Xinyue
; ; 
Han, B.
; 
Ou, Jinping
Publication Date
2022-02-20
End of Embargo
Supervisor
Keywords
Nano titanium dioxide, Reactive powder concrete, Sewage, Corrosion resistance mechanisms, Microorganism biodegradation
Rights
© 2022 Elsevier. Reproduced in accordance with the publisher's self-archiving policy. This manuscript version is made available under the CC-BY-NC-ND 4.0 license.
Peer-Reviewed
Yes
Open Access status
openAccess
Accepted for publication
2022-01-11
Institution
Department
Awarded
Embargo end date
Collections
Engineering and Digital Technology Publications
Show all metadata
Files
Thumbnail Image
Accepted manuscript
Adobe PDF, 1.38 MB
Additional title
Abstract
In this study, anti-corrosion concrete for sewage system was developed with nano TiO2 (NT) and reactive powder concrete (RPC). The corrosion resistances of NT modified RPC (NTMRPC) in high concentration enhanced sewage were investigated from the perspectives of biological, physical and chemical corrosion resistances, respectively. In addition, mechanical properties of NTMRPC after sewage corrosion were also studied. Research results indicated that NT can endow RPC with antimicrobial property through their microorganism biodegradation properties. The inhibition and elimination rates of NTMRPC to its surface microorganisms were 37.35% and 80.93%, respectively. After sewage corrosion, the surface roughness, mass loss and deterioration depth of RPC were decreased by 62.57%, 15.48% and 18.44% due to the NT inclusion, respectively. In addition, the pH values of RPC in the deterioration depth ranges of 0-3 mm and 3-6 mm were increased by 11.45% and 23.62%, respectively. NT can restrain the strength deterioration of RPC in high concentration enhanced sewage. This may be due to the improved sewage biological anti-corrosion performances of RPC by inhibiting/eliminating the microorganisms on the surface of RPC as well as the enhanced sewage physical/chemical anti-corrosion performances of RPC by improving the compactness of RPC.
URI
http://hdl.handle.net/10454/18734
Version
Accepted manuscript
Citation
Li Z, Ding S, Kong L et al (2022) Nano TiO2-engineered anti-corrosion concrete for sewage system. Journal of Cleaner Production. 337: 130508.
Link to publisher’s version
Link to published version
Link to Version of Record
https://doi.org/10.1016/j.jclepro.2022.130508
Type
Article
Qualification name
Notes