Changuinola Dam

 ( Dams Completed In 2011 ) 

Changuinola I Dam, is located in district of Changuinola, in the Province of Bocas del Toro, in the western part of Panama. It is the largest roller-compacted concrete arch-gravity dam in the World.

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Technical features The design of the dam was conducted by Malcolm Dunstan & Associates engineering and construction company.Erlendsson G., Cameron-Ellis D., Shaw Q., Dunstan M., The Development of the Design of Changuinola 1 Dam, Roller Compacted Concrete Dams, Symposium, Zaragoza, October 2012

The construction of the dam started on October 25, 2007 and its first generator was operational on November 19, 2011. The roller-compacted concrete arch-gravity dam has a maximum height of and length of . The upstream vertical face arch radius is . The induced joints are spaced at intervals, with inducers installed in every second layer after compaction. The downstream face slope varies form 0.5:1 (H:V) in the center and 0.7:1 (H:V) on the flanks.

The RCC mix strength requirements were determined by a target direct tensile strength of . The composition of the high-paste RCC mix included:

• Portland Cement - 70 kg/m³
• Fly ash - 145 kg/m³
• Water - 119 kg/m³
• Coarse Aggregate - 1282 kg/m³
• Fine Aggregate - 888 kg/m³
• Retarder - 3.44 kg/m³

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See also

• List of power stations in Panama

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