We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Experimental study on sulfate erosion resistance of nano-CaCO<sub>3</sub> modified concrete.
- Authors
Qiao, Hongxia; Hakuzweyezu, Theogene; Yang, Bo; Li, Kan
- Abstract
In the saline soil environment of western China, salts can corrode ordinary cement concrete seriously, and the durability of concrete structure deteriorates gradually until it fails. This impedes the application of ordinary Portland cement concrete in this area. Aiming at the problem of the short service life of concrete in the harsh environment of western China, this study examines the performance of nano-CaCO3 modified concrete in a sulfate environment. The durability of the concrete was evaluated by the apparent phenomena on the relative quality evaluation parameter, the relative dynamic elastic modulus evaluation parameter, and the comprehensive damage evaluation parameter. The microstructure of corroded products was investigated using scanning electron microscopy to reveal the deterioration mechanism. The results show that the addition of 1% nano-CaCO3 can enhance the resistance of concrete to sulfate corrosion, and the service life of concrete structures will increase significantly.
- Subjects
CHINA; CONCRETE durability; CONCRETE; CONCRETE corrosion; PORTLAND cement; SCANNING electron microscopy; ELASTIC modulus
- Publication
Canadian Journal of Civil Engineering, 2022, Vol 49, Issue 4, p590
- ISSN
0315-1468
- Publication type
Article
- DOI
10.1139/cjce-2020-0307