ROCKFILL BARRAGE WITH CONCRETE FACE

Abstract

This work discusses the increasing use of rock-fill dams in Brazil in recent decades, focusing on the concrete-faced rock-fill dam (BEFC). Its characteristics, application methods and practical results are discussed. The construction of dams is an ancient practice, with historical records dating back around 50 centuries. The concrete-faced rockfill dam (BEFC), established in the 19th century in California, has become known in Brazil in recent decades due to its efficiency and economic viability, such as the Foz do Areia dam. This type of dam is known for combining rocks and concrete plates, thus offering resistance to erosion, versatility and durability. Research on the mechanical characteristics of BEFCs indicates that deformation and compressibility during and after construction can lead to differential displacements, which requires care in the design and construction stages to avoid the appearance of cracks and possible leaks. This type of dam also stands out for being advantageous in areas such as energy generation, flood control and water storage. In Brazil, the adoption of specific standards and legislation aims to guarantee safety and sustainability in the construction and operation of these dams.