Alpe Gera Dam
Encyclopedia
The Alpe Gera Dam is a gravity dam on the Cormor River 17 km (11 mi) northeast of Sondrio
Sondrio
Sondrio is an Italian town and comune located in the heart of the Valtellina. Sondrio counts approximately 22,000 inhabitants and it is the administrative centre for the Lombard Province of Sondrio.- History :...

 in the Lombardy
Lombardy
Lombardy is one of the 20 regions of Italy. The capital is Milan. One-sixth of Italy's population lives in Lombardy and about one fifth of Italy's GDP is produced in this region, making it the most populous and richest region in the country and one of the richest in the whole of Europe...

 region of Italy
Italy
Italy , officially the Italian Republic languages]] under the European Charter for Regional or Minority Languages. In each of these, Italy's official name is as follows:;;;;;;;;), is a unitary parliamentary republic in South-Central Europe. To the north it borders France, Switzerland, Austria and...

. It is 174 m (571 ft) tall and supports a 35 MW hydroelectric power station.

The dam was constructed between 1958 and 1964 and is best known for the concrete placement techniques used during its construction. Instead of concrete being poured into conventional monoliths, it was poured in layers with a lean mix. Next, the concrete was settled with immersed vibrators and then contraction joints were cut into the layer. These methods were not only cost-saving but instrumental in the development of roller-compacted concrete
Roller-compacted concrete
Roller-compacted concrete or rolled concrete is a special blend of concrete that has essentially the same ingredients as conventional concrete but in different ratios, and increasingly with partial substitution of fly ash for Portland cement. RCC is a mix of cement/fly ash, water, sand, aggregate...

in dam construction.
The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
x
OK