Test and analysis on durability of concrete cutoff wall for Gucheng reservoir

Concrete cutoff wall is an underground structure and its quality is directly related with the dam's operation life. Therefore it is very important in foundation treatment of hydraulic structures. The seepage and dissolution tests and corresponding calculations indicate that appropriate amount of fly ash and additive in concrete not only can increase the service life of concrete cutoff walls but also can reduce cement consumption and cost. This technique deserves to be widely applied in hydraulic construction.