| abstract |
(57) [Summary] [PROBLEMS] By using an ultra-high-strength concrete-based hardened body, it can be constructed on rapid rivers and dams, and is excellent in wear and surface erosion resistance due to high-speed sediment flow and high-speed water flow. To provide headraces and headraces including sand drains. According to the water conduit / water conduit of the present invention, at least a cured product of a compound containing cement, fine pozzolanic powder, aggregate particles having a particle diameter of 2 mm or less, water, and a water reducing agent is provided. It is characterized by becoming. |