Development and Problems of Concrete Dam Technology in Japan
By K. Sakata
Concrete Journal, Vol.38, No.3, Mar. 2000
- Synopsis
- After the end of Second World War, Many dams have been constructed for water resources, electricity, flood control and other purposes in Japan. Roller Compacted Dam (RCD) method was first applied in 1978 in the construction of Shimajigawa Dam and thereafter this method was successively adopted in the construction of approximately 40 dams. The layer concrete placing methods such as RCD method and Extended Layer Construction Method (ELCM) are now the typical methods in the construction of concrete dams. Considering the recent progress of concrete dam technology, Standard Specification for Design and Construction of Concrete Structures (Dam) was revised in 1996 by Japan Society of Civil Engineers. This paper provides a summary of the recent technical development and improvement in the field of concrete dam in Japan and some problems for a future study.
- Keywords:
- concrete dam, ELCM, RCD method, lower quality aggregate, fly ash, temperature control, VC-value.
