Innovative Concept for Prestressed Pressure Pipe

by A. T. Ciolko, Construction Technology Lab Inc, United States,
T. E. Northup, Construction Technology Lab Inc, United States,



Document Type: Proceeding Paper

Part of: Pipeline Design and Installation

Abstract:

A new design and manufacturing concept was developed by General Atomics for prestressed pressure pipe. With this new concept, patented in the U.S. and in the major industrialized nations, a cylindrical concrete core is cast against the interior surface of a high-strength sheet steel cylinder. However, instead of achieving prestress by helically wrapping the concrete core/steel cylinder with high-strength steel wire, a commentitious grout is pressure injected into the interface between the concrete core and steel cylinder. The pressurized grout material produces circumferential compressive stress in the concrete core and a circumferential tensile stress in the steel cylinder.

Subject Headings: Pressure pipes | Prestressing | Grouting | Concrete cylinder pipes | High-strength steel | Cylinders | Steel pipes

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