A field study of HDD installed ductile iron pipe

Samuel Ariaratnam, Richard Bonds, Daniel Crabtree

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

The introduction of restrained joint ductile iron is rapidly gaining acceptance as an alternative pipe material for municipal engineering applications using horizontal directional drilling (HDD). The boltless restrained connection offers flexibility, ease of assembly, and positive restraint against endwise axial separation due to pulling during trenchless installations. The main area of concern is the potential corrosive effects on the pipe from the bentonite-based drilling fluid used in the installation. This paper discusses the results of a field testing program to evaluate the performance of restrained joint ductile iron pipe installed by horizontal directional drilling. The research involved assessment of the installation durability and effectiveness of two combinations of externally applied, loose wrapped, polyethylene encasement to provide a protective barrier. The pipe was excavated immediately and at time intervals of four months, nine months, and thirty-four months post-installation to evaluate pipe material integrity over various time horizons. The study concluded that employing 0.02mm (8mil) linear low-density polyethylene encasement provided the best protection to the ductile iron pipe against corrosion from drilling fluid and soils with low resistivities.

Original languageEnglish (US)
Title of host publicationProceedings of Pipelines Congress 2008 - Pipeline Asset Management
Subtitle of host publicationMaximizing Performance of Our Pipeline Infrastructure
StatePublished - Dec 1 2008
EventPipelines Congress 2008 - Pipeline Asset Management: Maximizing Performance of Our Pipeline Infrastructure - Atlanta, GA, United States
Duration: Jul 22 2008Jul 28 2008

Publication series

NameProceedings of Pipelines Congress 2008 - Pipeline Asset Management: Maximizing Performance of Our Pipeline Infrastructure
Volume321

Other

OtherPipelines Congress 2008 - Pipeline Asset Management: Maximizing Performance of Our Pipeline Infrastructure
CountryUnited States
CityAtlanta, GA
Period7/22/087/28/08

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ASJC Scopus subject areas

  • Safety, Risk, Reliability and Quality
  • Building and Construction

Cite this

Ariaratnam, S., Bonds, R., & Crabtree, D. (2008). A field study of HDD installed ductile iron pipe. In Proceedings of Pipelines Congress 2008 - Pipeline Asset Management: Maximizing Performance of Our Pipeline Infrastructure (Proceedings of Pipelines Congress 2008 - Pipeline Asset Management: Maximizing Performance of Our Pipeline Infrastructure; Vol. 321).