Infrasense recently performed a ground penetrating radar (GPR) survey of the bridge deck carrying Lafayette Road over the Soo Line and B.N. Railroad in St. Paul, Minnesota. The GPR data collection system included dual 2GHz horn antennas and a SIR-30 control unit manufactured by GSSI of Nashua, NH. This GPR survey was carried out at…
DetailsInfrasense completed the subsurface pavement structure evaluation of approximately 79.93 lane-miles of public roadways in Falls Church, Virginia using Ground Penetrating Radar (GPR) testing to determine the thicknesses of the pavement structure layers. It was performed along the centerline of each roadway, centerline of each lane, and at an offset approximately 1 foot from the…
DetailsInfrasense’s Dr. Ken Maser presented the results of a network-level pavement substructure evaluation completed in Idaho. The project focused on a network of 700 miles of roadways covering a wide range of geographic and pavement structure conditions. The roadways were continuously surveyed with a Traffic Speed Deflectometer (TSD) and with Ground Penetrating Radar (GPR). The…
DetailsIn mid-May, Infrasense began phase 1 of deck testing on 52 bridge decks throughout 12 counties in Oregon. We have started with the ground penetrating radar testing, and plan to return in July to perform infrared testing under more optimal weather conditions. Phase 2 will begin in late summer or early fall, after preliminary GPR…
DetailsInfrasense recently deployed an air-launched 3D-Radar system on projects in Iowa, Florida, and Virginia. The high-resolution system contains 21 antennas spaced 3 inches apart, and is capable of penetrating up to 5 feet below the surface. Infrasense has used this system to evaluate bridge deck, pavement, and tunnel deck conditions.
This past week, the Infrasense team spent a few days in the White Mountains to share some technical knowledge, explore the snowy outdoors, and prepare for what looks to be another busy year providing clients with accurate and useful NDE testing services. Activities ranged from an overview of our performance in 2016, a refresher…
DetailsHow our high resolution video complements the abilities of Infrared. Infrared data is collected using a FLIR thermographic camera, which measures surface temperature and can provide information regarding subsurface damage in bridge decks. The camera is mounted to a vehicle and data can be collected at highway speeds with clear and accurate results. After surveying…
DetailsOn Thursday, December 1, 2016, Ken Maser, Ph.D., PE, will give a presentation on the state of the practice and the future of GPR and other forms of NDT for both pavement and bridge deck applications. The presentation will be in webinar format, via the Transportation Learning Network. The 1.5-hour webinar will cover the various applications…
DetailsHere in New England, red and orange leaves have begun to brighten our daily commutes, which have become noticeably darker we inch closer to winter. Fall is here, and so is Back-to-School season, which means our group of summer interns have left some empty desks around our office. Everyone at Infrasense would like to thank…
DetailsInfrasense just finished some fieldwork in beautiful Idaho, where plains, mountains, dark skies provided a refreshing change of scenery from our Boston office. Here’s a shot of our survey vehicle on a truss bridge (not a structure we were evaluating, just a great photo op!) with the MIlky Way stretching across the sky above us.…
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