Quality Control/Inspection—Upper Stillwater Dam

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by Timothy P. Dolen, Bureau of Reclamation, Denver, CO, USA,
Alan T. Richardson, Bureau of Reclamation, Denver, CO, USA,
William R. White, Bureau of Reclamation, Denver, CO, USA,

Document Type: Proceeding Paper

Part of: Roller Compacted Concrete II:

Abstract: Roller compacted concrete construction, or RCC, is a relatively new method of constructing concrete dams and involves placing and spreading no-slump concrete in horizontal layers and compacting with a smooth-drum, vibratory roller. Upper Stillwater Dam, designed by the Bureau of Reclamation, is the world's largest RCC dam. The dam has a height of 290 ft (88 m), length of 2700 ft (823 m), and volume of RCC of 1. 47 million yd**3 (1. 12 million m**3). RCC was placed within horizontally slipformed curbs placed on the upstream and downstream faces of the dam. The concrete quality control and inspection program was developed specifically for the project to accommodate the new methods of construction and procedures for testing RCC. Test results show that quality of RCC is similar to that of conventionally placed mass concrete.

Subject Headings: Concrete dams | Roller-compacted concrete | Compaction (material) | Construction methods | Concrete construction | Quality control | Infrastructure construction | Rivers and streams |

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