Abstract
The use of prestressed concrete sheet piles is widespread due to ease of handling, esthetic quality, low maintenance costs, and great strength. In installations where the flow of water through the sheet piles or seepage of soil materials such as sand and silt is to be prevented, the joint between adjacent piles must be watertight. This is most commonly done by some form of grouting. During the period from October 1968 to January 1969, the Waterways Experiment Station, Concrete Division, conducted tests on prestressed concrete sheet piles incorporating a newly developed plastic interlock-waterstop. The purpose of the tests was to determine the structural limitations of the interlock and the feasibility of its use on various U.S. Army Engineer Division, Lower Mississippi Valley projects as a substitute for grouted concrete sheet piling or for steel sheet piling. The investigation was authorized by the U.S. Army Engineer District, New Orleans. The complete results of this investigation are published elsewhere*.
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