Stress Relaxation Characteristics of the HDPE Pipe-Soil System

by Larry J. Petroff, Spirolite Corp, United States,

Document Type: Proceeding Paper

Part of: Pipeline Design and Installation


All piping materials and soils are subject to viscoelastic behavior such as stress relaxation and creep. The combination of soil and pipe viscoelastic properties determine the time-dependent behavior of a pipe-soil system. Generally, the more conforming the pipe is to the soil's response, the more favorable the system's response. For instance, buried, high-density polyethylene (HDPE) pipe may undergo a relief in load with time due to creep deflection. The largest portion of creep deflection for HDPE pipe occurs within 30 days after installation.

Subject Headings: Relaxation (mechanics) | Polyethylene | Soil-pipe interaction | Buried pipes | Pipelines | Soil modulus | Density (material) | Soil stress

Services: Buy this book/Buy this article


Return to search