Effect of Sliplining on Behavior of Corroded Corrugated Steel Pipes under Loading

Culverts and pipes installed under roadways several decades ago are reaching the end of their service life. Excavation and replacement of these buried structures will cause disruption to their service and require significant funding. Trenchless methods (e.g., sliplining) have been increasingly used to rehabilitate deteriorated buried structures (e.g., corroded steel pipes). Sliplining involves placement of a new pipe liner inside an existing deteriorated pipe and grouting of the space between them. In this experimental study, parallel-plate loading tests were carried out to evaluate the effect of sliplining on the behavior of corrugated steel pipes with different degrees of corrosion. The nominal diameters of corrugated steel pipes and polyvinyl chloride liner were 305 and 254 mm, respectively. This study investigated three different degrees of steel pipe corrosion (0%, 50%, and 90%). A low-strength, normal density grout was used to fill the space between the steel pipe and the liner. The pipes without and with sliplining were tested for their load-carrying capacity, stiffness, vertical and horizontal diameter changes, and average strains and curvatures. The experimental results show that prior to sliplining, the steel pipe with 90% corrosion had a higher stiffness than that with 50% corrosion at a higher applied load. After sliplining, however, the steel pipe with 50% corrosion had a higher stiffness than the pipe with 90% corrosion. Sliplining increased the load-carrying capacity and stiffness of the pipe. The location of the liner relative to the existing pipe had a minor effect on the behavior of the sliplined steel pipes.

  • Supplemental Notes:
    • This paper was sponsored by TRB committee AFF70 Standing Committee on Culverts and Hydraulic Structures.
  • Corporate Authors:

    Transportation Research Board

    ,    
  • Authors:
    • Rahmaninezhad, Seyed Mustapha
    • Han, Jie
    • Al-Naddaf, Mahdi
    • Parsons, Robert L
  • Conference:
  • Date: 2019

Language

  • English

Media Info

  • Media Type: Digital/other
  • Features: References;
  • Pagination: 4p

Subject/Index Terms

Filing Info

  • Accession Number: 01697970
  • Record Type: Publication
  • Report/Paper Numbers: 19-01660
  • Files: TRIS, TRB, ATRI
  • Created Date: Dec 7 2018 9:43AM