Blonde Girl With The Colorful Scarf At The River Dam

A third type of embankment dam is built with asphalt concrete core. The majority of such dams are built with rock and/or gravel as the main fill material. Almost 100 dams of this design have now been built worldwide since the first such dam was completed in 1962. All asphalt-concrete core dams built so far have an excellent performance record. The type of asphalt used is a viscoelastic-plastic material that can adjust to the movements and deformations imposed on the embankment as a whole, and to settlements in the foundation. The flexible properties of the asphalt make such dams especially suited in earthquake regions.
• By size
International standards (including International Commission on Large Dams, ICOLD) define large dams as higher than 15 meters and major dams as over 150 meters in height. The Report of the World Commission on Dams also includes in the large category, dams, such as barrages, which are between 5 and 15 meters high with a reservoir capacity of more than 3 million cubic meters.
The tallest dam in the world is the 300-meter-high Nurek Dam in Tajikistan.