The Project
This project was done on a section of US 40 that stretches from State Route 48 to Hoke Road. It consists of three to six lanes and passes through the town of Englewood. Due to the urban setting, there were a number of complications the crew had to keep in mind while paving, including curbs, sidewalks, architectural pedestrian crossing, numerous businesses, and schools on the west end of the road.
Todd Thomas, the Asphalt Materials field support engineer on this job, reviewed the J-Band checklist with the paving crew and ODOT employees who were present. J-Band was scheduled to be applied at a rate of 1.36 lb./ft. at a width of 15”. For areas where J-Band application would be done in two passes, J-Band was applied at 7.5” wide and at a rate of 0.68 lb./ft. Upon being applied, the J-Band cooled from 310°F to 129°F in less than three minutes. Traffic can typically cross J-Band at these temperatures without tracking.
The road was paved the same day. Todd reviewed proper rolling operations for a pavement that’s been treated with J-Band with the paving superintendent. A trackless tack was applied after J-Band.
The Results
Upon paving, J-Band was observed to migrate 5/8” up into the overlay prior to compaction. The total migration height after compaction is between 50-75% of the overlay height and will can be measured directly from core samples. As J-Band migrates upwards, it fills air voids in the pavement. This means that the density of the HMA at the joint has been increased. making it less vulnerable to the destructive forces of air and water. The J-Band team will collect data on this project over the years in order to report on J-Band’s performance.
Location: Montgomery County, OH
Date: May 15, 2019
Road Type: Urban minor arterial
Project Length: 7,603 feet
AADT: 9,465
Prime Contractor: Jurgensen
J-Band Applicator: Specialized Construction
J-Band Supplier: Asphalt Materials, Inc.
J-Band Field Engineer: Todd Thomas
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