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Omni-Flex Pipe Joint Seals

File Language:
English


Details

  • Creators:
    Williams, Gary G.
  • Corporate Creators:
    Oklahoma. Department of Transportation. Research, Development, and Technology Transfer
  • Corporate Contributors:
    United States. Department of Transportation. Federal Highway Administration
  • Subject/TRT Terms:
  • Publication/ Report Number:
    FHWA/OK 96(01)
  • Resource Type:
    Tech Report
  • Geographical Coverage:
    United States
  • Edition:
    Final Report, June, 199 l - October, 1995.
  • Corporate Publisher:
    Oklahoma. Department of Transportation
  • Abstract:
    In June 1991, the Oklahoma Department of Transportation (ODOT) had 16 Omni-Flex pipe joint seals installed in the joints of a reinforced concrete pipe (RCP) section on ODOT Project ACIR-44-2(326)233 in Tulsa. Individual sections of RCP had diameters of 1.5 m (60 in.) and lengths of 2.4 m (8 ft) in the area where the seals were installed. The remainder of the joints between RCP sections on this project were sealed with mastic. Mastic is approved for use on ODOT projects and is widely used in Oklahoma. The 16 joints sealed with Omni-Flex seals, and an adjacent 16 joints of the same size RCP, sealed with mastic, have been monitored since project completion. Monitoring consisted of inspecting the joints from inside the pipe. Neither section has shown any unusual amounts of leakage or other deterioration which could be considered to be related to performance of the joint seals. Omni-Flex seals have been used on numerous other ODOT projects, where ODOT contractors have been allowed to use them by change order. Results have been satisfactory in all but one case, where unusually large numbers of leaking joints were observed soon after RCP was laid. Pipe where the leakage occurred had diameters of 2.7 m (108 in.) and 2.4 m (96 in.). It was not clear whether or not performance of the Omni-Flex seals was a factor in causing the leaks. Based on the overall performance of the Omni-Flex devices, ODOT's Research, Development and Technology Transfer Section recommended their approval as a contractor option, with possible exceptions for large RCP sizes. The Omni-Flex Project Panel approved their use on RCP with diameters of 1.5 m (60 in.) and smaller. A specification providing for their use has been included in the "ODOT 1996 Standard Specifications for Highway Construction" published in October 1996.
  • Format:
    PDF
  • Collection(s):
  • Main Document Checksum:
    urn:sha-512:329efa79b0d118c292114be1d416b698bd78a0ee17bc47917f520c3b55e28c5a9c3d52f3d1340031c972ad60696ac13f4df191ae573ed7893c6ae3b2d12f9f5b
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  • File Type:
    Filetype[PDF - 5.35 MB ]
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