Application of Repair Material and Technology for Concrete Damaged by High-speed Flow Scour
In view of the large-scale development and utilization of China's water resources,water conservancy projects have developed toward high heads,large flows,and high flow rates.Research has focused on high-speed flow scour,sand wear,and accompanying cavitation damage.The selection of materials sho...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Editorial Office of Pearl River
2021-01-01
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| Series: | Renmin Zhujiang |
| Subjects: | |
| Online Access: | http://www.renminzhujiang.cn/thesisDetails#10.3969/j.issn.1001-9235.2021.10.010 |
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| Summary: | In view of the large-scale development and utilization of China's water resources,water conservancy projects have developed toward high heads,large flows,and high flow rates.Research has focused on high-speed flow scour,sand wear,and accompanying cavitation damage.The selection of materials shows that:①NE-Type II epoxy mortar has good abrasion resistance,mechanical properties,workability,carbonization resistance,aging resistance,and durability.②Polyurea coating has good abrasion resistance,environmental protection,strength,yellowing resistance,aging resistance,water resistance,stable performance,and low temperature flexibility to ensure smooth flow surface,which is a new type of environmental-protection waterproof protective elastic paint.③HF concrete has good workability,excellent crack resistance,low cost and mature technology.④The polyurethane sealant is easy to operate,fast in construction,bonded well with concrete,excellent in resilience,good in aging resistance,and free of flow at high temperature and brittle fracture at low temperature.NE-Type II epoxy mortar,HF concrete,polyurethane sealant are featured with strong resistance to high-speed flow scour,sand wear,and accompanying cavitation damage.Therefore,they are proper to select as repair material for high-speed flow scour,sand wear and damage. |
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| ISSN: | 1001-9235 |