| 摘要 |
PROBLEM TO BE SOLVED: To reduce a workload to remove protective mortal or concrete on a surface of bedrock therefrom.SOLUTION: A construction method for a dam body, includes the processes to: apply a chemical agent to a first excavated surface 1 (bedrock surface) which is externally exposed (S2); place mortar 5 or concrete on the first excavated surface 1 with the chemical agent applied thereto (S3); remove the mortar 5 or the concrete from the first excavated surface 1 (S5); create a second excavated surface 2 by excavating the first excavated surface 1, with the mortar 5 or the concrete removed, by a predetermined thickness t1 (S6); and construct the dam body on the second excavated surface 2 (S8). The chemical agent reduces adhesion of the mortar 5 or the concrete to the first excavated surface 1.SELECTED DRAWING: Figure 1 |
