Over the top concrete

Article Abstract:

Roller-compacted concrete (RCC) is the main construction material used in the $850,000 rehabilitation of Montana's existing Tongue River Dam. Four types of RCC mixes from locally-mined aggregates, with concrete contents between 150 and 325 lb/cu yd, have water-reducing and air entrainment agents incorporated. The project, which will be completed in spring 1999, includes a large RCC over-the-top emergency spillway that will raise the height of the reservoir and increase its capacity.

Usage, Concretes, Montana, Buildings and facilities, Remodeling and renovation, Earth dams, Roller compacted concrete

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Dam-Rehab conference stresses safety issues

Article Abstract:

The speakers at ASEC's Geotechnical Practice in Dam Rehabilitation Conference emphasized the importance of dam safety. Representatives of federal agencies involved in dam construction were questioned on their mode of operation for dam safety, and the cost involved in the process. The Feizaghi Award was presented to Jorj O. Osterberg of Northwestern University.

Analysis, Dam failures

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