Durability evaluation of mortar materials for repairing impact wear in canals
2018
Matsuda, N. (Tanaka Civiltec Co., Ltd., Nagahama, Shiga (Japan)) | Miyamura, K. | Mori, T.
Maintenance measures are being implemented in irrigation facilities nationwide. Mortar materials are frequently used for repairing degraded cross-sections of irrigation canals. These materials are used to repair abrasions caused by sand and running water. In addition, these mortar materials are sometimes used to repair canal drops damaged by the impact of falling stones. In this study, we simulated a falling stone by dropping a steel ball in order to evaluate the durability of mortar materials used for repairing the damaged area of a drop. As a result, we confirmed that the durability of the repair material was highest for fiber-reinforced cement mortar, followed by polymer cement mortar, and normal concrete. In addition, we confirmed that by setting the thickness of the fiber-reinforced cement mortar or polymer cement mortar to 30 mm, it can be expected to protect the existing concrete.
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