Evaluation of drainage pipe by field experimentation and supplemental laboratory experimentation : interim report No. 3.

PDFTech ReportResearch Report No. 154Research Project No. 72-1SSLouisiana HPR 0010(005)DrainagePipeDurabilityCulvertsCorrosionpH valueExperimentsTest sectionsLouisianaLouisiana. Department of Highways. Research and Development SectionTemple, William H.Rasoulian, MasoodGueho, Bruce J.Louisiana. Department of Highways. Research and Development SectionUnited States. Federal Highway AdministrationUS Transportation CollectionThe Louisiana Department of Transportation and Development reacts to a major problem when it attempts to shape and control drainage patterns along its right-of-ways. The Department's design engineers meet this challenge through proper section design and appropriate application of drainage structures.This interim report relates field and laboratory observations concerning the condition of the test pipes after six years of in-service exposure. It was found that the asbestos-bonded asphalt-coated, galvanized steel pipe was performing better than the other ten original types of culverts in resisting corrosion. All of the coating on the various test culverts in resisting corrosion. All of the coating on the various test culverts are showing signs of distress at the highly corrosive test sites.Aluminum alloy culverts have developed significant pitting in environments with pH less than 5 as well as environment with resistivity less than 1000 ohm-cm after six years of service