Abstract
Hydraulic structures are important assets of our society. As the service life requirement for large infrastructures is keeping on increasing, long-term durability has becoming more and more critical. Abrasion damage of concrete caused by sediment-laden flow can be a significant durability problem for hydraulic structures. Being a multidisciplinary problem and complex in nature, e.g. involving at least hydrodynamic conditions and concrete materials, concrete abrasion damage has been subjected to extensive studies, while there are still debates on many aspects [1]. This work tries to provide an overview on recent research progress on the subject. The theoretical basis for concrete damage under sediment-laden flow will be introduced first. Different experimental tests relevant to abrasion have been proposed and the most representative ones will be discussed. However, it should be highlighted that standard testing methods that can effectively catch field behaviours are still missing; moreover, there is an apparent gap between the results obtained from laboratory studies and the field. Hydraulic parameters, e.g. flow velocity, sediment content and impact angle, and concrete material properties, e.g. mechanical strengths and hardness, are among the key factors affecting the abrasion damage, and their effects will be summarized. Great efforts have been made in establishing models to predict the abrasion damage, including empirical, theoretical, and numerical ones, where the strengths and weaknesses of existing models will be critically evaluated. Additionally, various strategies have been proposed to improve abrasion damage of concrete, and the most relevant ones will be discussed. While summarizing the recent research advances, one important aim of this work is also trying to identify and highlight the knowledge gaps. Lastly, some of our recent work on developing new abrasion test method [2] and prediction models [3, 4] will be briefly presented.
Original language | English |
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Publication date | 2024 |
Number of pages | 1 |
Publication status | Published - 2024 |
Event | International Conference on Innovation in Civil, Structural and Environmental Engineering - Rome, Italy Duration: 23 Oct 2024 → 25 Oct 2024 |
Conference
Conference | International Conference on Innovation in Civil, Structural and Environmental Engineering |
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Country/Territory | Italy |
City | Rome |
Period | 23/10/2024 → 25/10/2024 |
Keywords
- Hydraulic structures
- Abrasion damage
- Concrete durability
- Prediction models