XVIII IWRA World Water Congress Beijing China 2023
Sub-theme 5: Establishing Sustainable Water Infrastructures
Author(s): HAN Xuesong,XU Zhengfei, QIAN Wenxun, XU Fei, GE Jinyu
Poster: PDFAbstractObjectives of the study
The main deterioration factors of ship lock concrete of inland river are collision with ships and carbonization by CO2. The existing lock concrete is mostly designed according to the period of 50 years, the strength grade is low and the carbonation resistance is limited. There are also multiple effects of external wear and impact and environmental impact, which have significant performance damage, during the operation period.
Conclusions
- The concrete deterioration speed is faster, and the deterioration depth is greater under the alternate deterioration of abrasion and carbonization cycle.
- Larger porosity corresponds to higher CO2diffusion rate, which means abrasion accelerates the diffusion of CO2inside the concrete.