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Joint sealant study
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Joint sealant study
  • Publication/ Report Number:
    PEV-86018 ; NTIS-PB92157536 ;
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  • Edition:
    Construction report
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  • NTL Classification:
    NTL-HIGHWAY/ROAD TRANSPORTATION-Pavement Management and Performance ; NTL-HIGHWAY/ROAD TRANSPORTATION-Construction and Maintenance ; NTL-HIGHWAY/ROAD TRANSPORTATION-Materials ;
  • Format:
  • Abstract:
    ADOT has approximately 550 lane miles of jointed portland cement pavement under its jurisdiction. The current practice is to saw and seal the joints at the time of construction and reseal the joints under a rehabilitation project. ADOT does not specify a performance criteria for joint sealant. To evaluate the performance of currently available products, a 0.7 mile test section was constructed on I-17 near Flagstaff. The test section, constructed on the southbound roadway from milepost 330.5 to 331.2 compared two silicones, Dow Corning 888 and Superseal 888, and three hotpours, Allied-Koch 9001, Craftco Roadsaver 231 and W. R. Meadows SOF-SEAL. The sealants were placed in July, 1986 by Change Order on project IR-17-2(104). This project consisted of resealing 26 miles of plain jointed concrete pavement constructed in 1974. A total of two hundred transverse joints extending across the entire roadway were sealed. The sealants were placed in a specified pattern alternating one product after another until forty joints of each material had been placed (i.e., within any five joint interval all five products were placed). The sealant performance will be monitored semi-annually for a period of four years with cores obtained after one, two and four years. /Abstract from report summary page/

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