India's first 84-m high Roller Compacted Concrete dam

The Irrigation Department, Government of Maharashtra, is constructing the first dam in India using Roller Compacted Concrete (RCC) technology with a high percentage of fly ash. The work on the project, under the Ghatghar Pumped Storage Scheme, has commenced on the river Pravara, near Nashik, and is due for completion by December 2004.

Three dams - Upper Dam, Saddle Dam-1 and Lower Dam - will be constructed under this scheme with RCC technology by using dry fly ash with cement. The project includes a major dam with a height of 84 metres. The fly ash will be available from the thermal power station at Nashik.
The main benefit of RCC is efficient and speedy construction: the project will be completed in just two years; otherwise about 10 years if conventional concrete is used to construct these dams. The other advantages are higher substitution (up to 70 per cent) of cement by fly ash and reduced heat of hydration, consequently lesser expenses on cooling infrastructure.
The Ghatghar Pumped Storage Scheme provides for the installation of two 125-mw reversible pump turbine and generator motor units in an underground power house. The upper portion of this scheme is located near village Ghatghar, Akole taluka, Ahmednagar district, and its lower portion is near village Chonde, Shahapur taluka, Thane district.

Thanks to

;

http://www.projectsmonitor.com/detailnews.asp?newsid=7197