Roller Compacted Concrete Studies at Lost Creek Dam.
Abstract
At Lost Creek Dam at Trail, Oregon, lean 3-inch maximum size aggregate (MSA) concrete mixtures were designed to be compacted by vibratory rollers. The control mix contained 235 pounds cement per cubic yard while other mixtures had a portion of the total volume of cement replaced with pozzolan, either fly ash or a locally available calcined shale. Each layer, except bedding layers, was approximately 8-inches thick after compaction. Laboratory work on control testing was conducted. It was concluded that properly proportioned roller compacted concrete can be effectively placed by soils compaction methods using a vibratory roller. The results of tests on drilled core specimens indicate that permeability and bond test results are similar to conventionally placed lean mass concrete values. The quality of the hardened lift joint is improved with the use of bedding mixtures. A modified Vebe apparatus can be used for control testing and for molding concrete central cylinders. (Modified author abstract)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1974
- Accession Number
- AD0780858
Entities
People
- Donald J. Hall
- Donald L. Houghton
Organizations
- Portland District, U.S. Army Corps of Engineers