Structural Design Methodology for Spray Applied Pipe Liners in Gravity Storm Water Conveyance Conduits

To reduce high cost of emergency repairs and disruptions to travelling public, and prior to loss of host pipe integrity and soil-structure interaction, departments of transportations (DOTs) can use polymeric or cementitious/geopolymer spray applied pipe linings (SAPLs) to renew deteriorated gravity storm conduits and culverts. The American Association of State Highway and Transportation Officials (AASHTO) – National Transportation Product Evaluation Program (NTPEP) developed a Technical Committee (TC) for SAPL materials to implement this technology. However, no standardized structural design methodology existed, and vendors utilized different design methodologies with some using the cured-in-place pipe (CIPP), and others using various classical analytical structural design equations developed for other purposes. Therefore, the ultimate objective of this project was to develop design equations for structural application of SAPLs for invert-cut (invert deteriorated) circular and arch corrugated metal pipe (CMP) culverts with diameters or spans between 36 and 120 in. To achieve this objective, the project methodology included literature review, survey of U.S. and Canadian transportation agencies, review of CIPP design equations, considerations for use of additional reinforcement and benefits of filling CMP corrugations with cementitious SAPLs, comparison of construction and environmental cost of SAPL with CIPP and sliplining trenchless renewal techniques, inspection and field data collection of past SAPL projects, preparation of performance specifications, soil box testing of bare and renewed CMP samples, and finite element modeling (FEM). As detailed in this report, soil box testing included both intact and invert-cut CMPs of 60-in. diameter/span for circular and arch shapes in both bare (for control test) and renewed (lined) conditions. The CMPs were renewed with polymeric and cementitious SAPLs in three different thicknesses while embedded with poorly graded sand (SP) with shallow cover. A static load with an actuator was continuously applied through a load pad on the soil surface until renewed pipe failed. The results of this project showed that both tested polymeric and geopolymer SAPLs can significantly increase the ultimate loading capacity of invert deteriorated CMPs and be considered as structural solutions.

• Record URL:
  https://www.dot.state.oh.us/Divisions/Planning/SPR/Research/reportsandplans/Reports/Final%20Reports/SJN%20135417%20Final%20Report%20V3.pdf
• Record URL:
  https://ohiomemory.org/digital/collection/p267401ccp2/id/21520/rec/1
• 
• Summary URL:
  https://www.dot.state.oh.us/Divisions/Planning/SPR/Research/reportsandplans/Reports/Final%20Reports/SJN%20135417%20Final%20Fact%20Sheet.pdf
• Record URL:
  https://rosap.ntl.bts.gov/view/dot/60993
• Corporate Authors:

  University of Texas, Arlington

  Center for Underground Infrastructure Research and Education
  Arlington, TX  United States  76019

  Ohio Department of Transportation

  Office of Statewide Planning and Research
  1980 West Broad Street
  Columbus, OH  United States  43223

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Najafi, Mohammad
  • Yu, Xinbao
  • Kouchesfehani, Zahra Kohankar
  • Tehrani, Amin Darabnoush
  • Korky, Seyed
  • Serajiantehrani, Ramtin
  • Raut, Samrat
  • Kampbell, Ed
  • Osborn, Lynn
• Publication Date: 2021-4

Language

• English

Media Info

• Media Type: Digital/other
• Edition: Final Report
• Features: Appendices; Figures; Maps; Photos; References; Tables;
• Pagination: 613p

Subject/Index Terms

• TRT Terms: Cement; Corrugated metal culverts; Costs; Finite element method; Linings; Load tests; Pipe culverts; Plastics; Sprays (Materials); State of the practice; Structural design
• Subject Areas: Bridges and other structures; Design; Highways; Materials;

Filing Info

• Accession Number: 01775779
• Record Type: Publication
• Report/Paper Numbers: FHWA/OH-2021/10
• Contract Numbers: PID: 103453
• Files: NTL, TRIS, ATRI, USDOT, STATEDOT
• Created Date: Jun 30 2021 5:35PM