A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Construction of Tremie Concrete Cutoff Wall, Wolf Creek Dam, Kentucky
Significant leakage was occurring at a Corps of Engineers dam. The cause of the leakage was postulated to be flow through the dam's cutoff trench or through solution cavities beneath the dam or through both. The repair technique selected was to construct a concrete cutoff wall through the earth-fill portion of the dam into the rock foundation using a modification of the diaphragm wall technique often used in foundation construction. Concrete was placed by tremie to construct the individual elements making up the wall. The construction methods, equipment, and materials are described in this report. The report emphasizes the effort to determine the cause of isolated areas of heterogeneities such as honeycomb and laitance which were found in the completed wall. The apparent cause was a combination fo segregation occurring during the fall of the concrete through the tremie, the small diameter of the wall elements, the smooth walls of the casings being used for the elements, and the rapid rate of concrete placement. It is believed that these last three factors inhibited concrete remixing within the wall elements leading to the heterogeneities noted.
Construction of Tremie Concrete Cutoff Wall, Wolf Creek Dam, Kentucky
Significant leakage was occurring at a Corps of Engineers dam. The cause of the leakage was postulated to be flow through the dam's cutoff trench or through solution cavities beneath the dam or through both. The repair technique selected was to construct a concrete cutoff wall through the earth-fill portion of the dam into the rock foundation using a modification of the diaphragm wall technique often used in foundation construction. Concrete was placed by tremie to construct the individual elements making up the wall. The construction methods, equipment, and materials are described in this report. The report emphasizes the effort to determine the cause of isolated areas of heterogeneities such as honeycomb and laitance which were found in the completed wall. The apparent cause was a combination fo segregation occurring during the fall of the concrete through the tremie, the small diameter of the wall elements, the smooth walls of the casings being used for the elements, and the rapid rate of concrete placement. It is believed that these last three factors inhibited concrete remixing within the wall elements leading to the heterogeneities noted.
Construction of Tremie Concrete Cutoff Wall, Wolf Creek Dam, Kentucky
T. C. Holand (author) / J. R. Turner (author)
1980
92 pages
Report
No indication
English
Civil Engineering , Walls , Concrete , Emplacement , Underwater , Earth dams , Seepage , Barriers , Construction , Foundations(Structures) , Rock , Excavation , Tubes , Cutoff walls , Tremie concrete , Wolf Creek Dam
Temperatures in tremie concrete
| Engineering Index Backfile | 1936
Lateral Pressures of Tremie-Placed Concrete
NTIS | 1947